./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi000_tso.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/protection/rfi000_tso.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/rfi000_tso.i ./goblint.2024-06-19_11-23-25.files/protection/rfi000_tso.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 19:17:57,849 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 19:17:57,927 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 19:17:57,933 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 19:17:57,934 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 19:17:57,962 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 19:17:57,963 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 19:17:57,964 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 19:17:57,964 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 19:17:57,968 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 19:17:57,968 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 19:17:57,969 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 19:17:57,970 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 19:17:57,971 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 19:17:57,971 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 19:17:57,972 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 19:17:57,972 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 19:17:57,972 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 19:17:57,973 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 19:17:57,974 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 19:17:57,974 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 19:17:57,975 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 19:17:57,975 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 19:17:57,975 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 19:17:57,975 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 19:17:57,976 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 19:17:57,976 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 19:17:57,976 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 19:17:57,977 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 19:17:57,977 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 19:17:57,978 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 19:17:57,978 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 19:17:57,978 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 19:17:57,979 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 19:17:57,979 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 19:17:57,979 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 19:17:57,979 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 19:17:57,980 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 19:17:57,980 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 19:17:57,980 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 19:17:57,980 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 19:17:57,980 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 19:17:57,981 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 19:17:57,981 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 19:17:58,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 19:17:58,269 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 19:17:58,271 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 19:17:58,272 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 19:17:58,273 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 19:17:58,274 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/rfi000_tso.yml/witness.yml [2024-06-27 19:17:58,447 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 19:17:58,447 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 19:17:58,448 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi000_tso.i [2024-06-27 19:17:59,656 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 19:17:59,938 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 19:17:59,942 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi000_tso.i [2024-06-27 19:17:59,965 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff69d6a9a/d9b7d586da6a46e796017f181fd564cb/FLAG0f32cd6f2 [2024-06-27 19:17:59,977 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff69d6a9a/d9b7d586da6a46e796017f181fd564cb [2024-06-27 19:17:59,978 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 19:17:59,979 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 19:17:59,982 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 19:17:59,982 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 19:17:59,987 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 19:17:59,988 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:17:58" (1/2) ... [2024-06-27 19:17:59,989 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55f726fa and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:17:59, skipping insertion in model container [2024-06-27 19:17:59,989 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:17:58" (1/2) ... [2024-06-27 19:17:59,990 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@51c140ec and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:17:59, skipping insertion in model container [2024-06-27 19:17:59,991 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 07:17:59" (2/2) ... [2024-06-27 19:17:59,992 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55f726fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:17:59, skipping insertion in model container [2024-06-27 19:17:59,992 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 07:17:59" (2/2) ... [2024-06-27 19:17:59,992 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 19:18:00,063 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 19:18:00,064 INFO L97 edCorrectnessWitness]: Location invariant before [L830-L830] ((((((((((((((! multithreaded || y$r_buff1_thd0 == (_Bool)0) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2))) && (! multithreaded || y$read_delayed_var == 0) [2024-06-27 19:18:00,064 INFO L97 edCorrectnessWitness]: Location invariant before [L829-L829] ((((((((((((((! multithreaded || y$r_buff1_thd0 == (_Bool)0) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2))) && (! multithreaded || y$read_delayed_var == 0) [2024-06-27 19:18:00,064 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 19:18:00,065 INFO L106 edCorrectnessWitness]: ghost_update [L827-L827] multithreaded = 1; [2024-06-27 19:18:00,105 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 19:18:00,595 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 19:18:00,607 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 19:18:00,720 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 19:18:00,773 INFO L206 MainTranslator]: Completed translation [2024-06-27 19:18:00,775 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:18:00 WrapperNode [2024-06-27 19:18:00,775 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 19:18:00,776 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 19:18:00,776 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 19:18:00,776 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 19:18:00,784 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:18:00" (1/1) ... [2024-06-27 19:18:00,823 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:18:00" (1/1) ... [2024-06-27 19:18:00,868 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 176 [2024-06-27 19:18:00,870 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 19:18:00,871 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 19:18:00,871 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 19:18:00,871 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 19:18:00,882 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:18:00" (1/1) ... [2024-06-27 19:18:00,882 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:18:00" (1/1) ... [2024-06-27 19:18:00,900 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:18:00" (1/1) ... [2024-06-27 19:18:00,927 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 19:18:00,927 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:18:00" (1/1) ... [2024-06-27 19:18:00,928 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:18:00" (1/1) ... [2024-06-27 19:18:00,947 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:18:00" (1/1) ... [2024-06-27 19:18:00,948 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:18:00" (1/1) ... [2024-06-27 19:18:00,950 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:18:00" (1/1) ... [2024-06-27 19:18:00,952 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:18:00" (1/1) ... [2024-06-27 19:18:00,955 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 19:18:00,968 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 19:18:00,969 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 19:18:00,970 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 19:18:00,971 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:18:00" (1/1) ... [2024-06-27 19:18:00,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 19:18:00,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 19:18:01,001 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 19:18:01,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 19:18:01,042 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 19:18:01,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 19:18:01,043 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 19:18:01,043 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 19:18:01,043 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 19:18:01,044 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 19:18:01,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 19:18:01,044 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 19:18:01,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 19:18:01,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 19:18:01,046 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 19:18:01,201 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 19:18:01,204 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 19:18:01,621 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 19:18:01,621 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 19:18:01,917 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 19:18:01,917 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 19:18:01,920 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 07:18:01 BoogieIcfgContainer [2024-06-27 19:18:01,920 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 19:18:01,923 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 19:18:01,923 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 19:18:01,926 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 19:18:01,926 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:17:58" (1/4) ... [2024-06-27 19:18:01,927 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11877242 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 07:18:01, skipping insertion in model container [2024-06-27 19:18:01,927 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 07:17:59" (2/4) ... [2024-06-27 19:18:01,927 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11877242 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 07:18:01, skipping insertion in model container [2024-06-27 19:18:01,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:18:00" (3/4) ... [2024-06-27 19:18:01,933 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11877242 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 07:18:01, skipping insertion in model container [2024-06-27 19:18:01,933 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 07:18:01" (4/4) ... [2024-06-27 19:18:01,934 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi000_tso.i [2024-06-27 19:18:01,952 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 19:18:01,952 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-27 19:18:01,952 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 19:18:01,995 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 19:18:02,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 70 flow [2024-06-27 19:18:02,068 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2024-06-27 19:18:02,068 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 19:18:02,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 29 events. 0/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-27 19:18:02,071 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 70 flow [2024-06-27 19:18:02,075 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 52 flow [2024-06-27 19:18:02,092 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 19:18:02,100 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3d16ecef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 19:18:02,100 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-27 19:18:02,106 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 19:18:02,107 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-27 19:18:02,107 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 19:18:02,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:02,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 19:18:02,109 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:18:02,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:02,115 INFO L85 PathProgramCache]: Analyzing trace with hash 402762543, now seen corresponding path program 1 times [2024-06-27 19:18:02,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:02,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067397298] [2024-06-27 19:18:02,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:02,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:02,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:02,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:02,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:02,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067397298] [2024-06-27 19:18:02,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067397298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:02,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:02,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 19:18:02,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709825926] [2024-06-27 19:18:02,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:02,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 19:18:02,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:02,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 19:18:02,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 19:18:03,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 19:18:03,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:03,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:03,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 19:18:03,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:03,206 INFO L124 PetriNetUnfolderBase]: 216/386 cut-off events. [2024-06-27 19:18:03,207 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-27 19:18:03,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 787 conditions, 386 events. 216/386 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1374 event pairs, 133 based on Foata normal form. 1/381 useless extension candidates. Maximal degree in co-relation 776. Up to 378 conditions per place. [2024-06-27 19:18:03,215 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 23 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2024-06-27 19:18:03,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 119 flow [2024-06-27 19:18:03,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 19:18:03,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 19:18:03,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2024-06-27 19:18:03,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5268817204301075 [2024-06-27 19:18:03,229 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 52 flow. Second operand 3 states and 49 transitions. [2024-06-27 19:18:03,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 119 flow [2024-06-27 19:18:03,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 19:18:03,236 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 71 flow [2024-06-27 19:18:03,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2024-06-27 19:18:03,242 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-06-27 19:18:03,242 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 71 flow [2024-06-27 19:18:03,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:03,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:03,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:03,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 19:18:03,243 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:18:03,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:03,244 INFO L85 PathProgramCache]: Analyzing trace with hash 508095192, now seen corresponding path program 1 times [2024-06-27 19:18:03,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:03,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045267418] [2024-06-27 19:18:03,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:03,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:03,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:03,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:03,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:03,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045267418] [2024-06-27 19:18:03,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045267418] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:03,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:03,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 19:18:03,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374906772] [2024-06-27 19:18:03,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:03,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 19:18:03,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:03,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 19:18:03,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 19:18:03,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 19:18:03,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:03,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:03,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 19:18:03,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:03,826 INFO L124 PetriNetUnfolderBase]: 213/381 cut-off events. [2024-06-27 19:18:03,826 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2024-06-27 19:18:03,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 877 conditions, 381 events. 213/381 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1343 event pairs, 109 based on Foata normal form. 2/382 useless extension candidates. Maximal degree in co-relation 865. Up to 364 conditions per place. [2024-06-27 19:18:03,834 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 27 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2024-06-27 19:18:03,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 161 flow [2024-06-27 19:18:03,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 19:18:03,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 19:18:03,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 62 transitions. [2024-06-27 19:18:03,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 19:18:03,838 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 71 flow. Second operand 4 states and 62 transitions. [2024-06-27 19:18:03,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 161 flow [2024-06-27 19:18:03,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 158 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 19:18:03,844 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 95 flow [2024-06-27 19:18:03,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2024-06-27 19:18:03,846 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2024-06-27 19:18:03,847 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 95 flow [2024-06-27 19:18:03,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:03,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:03,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:03,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 19:18:03,848 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:18:03,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:03,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1428917206, now seen corresponding path program 1 times [2024-06-27 19:18:03,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:03,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236670243] [2024-06-27 19:18:03,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:03,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:03,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:04,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:04,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:04,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236670243] [2024-06-27 19:18:04,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236670243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:04,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:04,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 19:18:04,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946497580] [2024-06-27 19:18:04,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:04,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 19:18:04,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:04,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 19:18:04,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 19:18:04,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 19:18:04,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:04,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:04,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 19:18:04,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:04,528 INFO L124 PetriNetUnfolderBase]: 215/385 cut-off events. [2024-06-27 19:18:04,528 INFO L125 PetriNetUnfolderBase]: For 224/224 co-relation queries the response was YES. [2024-06-27 19:18:04,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 972 conditions, 385 events. 215/385 cut-off events. For 224/224 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1359 event pairs, 53 based on Foata normal form. 6/390 useless extension candidates. Maximal degree in co-relation 958. Up to 320 conditions per place. [2024-06-27 19:18:04,532 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 37 selfloop transitions, 11 changer transitions 0/51 dead transitions. [2024-06-27 19:18:04,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 51 transitions, 261 flow [2024-06-27 19:18:04,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:18:04,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:18:04,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 83 transitions. [2024-06-27 19:18:04,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.535483870967742 [2024-06-27 19:18:04,536 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 95 flow. Second operand 5 states and 83 transitions. [2024-06-27 19:18:04,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 51 transitions, 261 flow [2024-06-27 19:18:04,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 51 transitions, 252 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 19:18:04,540 INFO L231 Difference]: Finished difference. Result has 39 places, 35 transitions, 162 flow [2024-06-27 19:18:04,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=162, PETRI_PLACES=39, PETRI_TRANSITIONS=35} [2024-06-27 19:18:04,541 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2024-06-27 19:18:04,541 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 35 transitions, 162 flow [2024-06-27 19:18:04,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:04,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:04,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:04,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 19:18:04,542 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:18:04,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:04,543 INFO L85 PathProgramCache]: Analyzing trace with hash 342448371, now seen corresponding path program 1 times [2024-06-27 19:18:04,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:04,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377179820] [2024-06-27 19:18:04,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:04,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:04,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:05,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:05,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:05,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377179820] [2024-06-27 19:18:05,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377179820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:05,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:05,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:18:05,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564727811] [2024-06-27 19:18:05,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:05,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:18:05,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:05,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:18:05,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:18:05,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 19:18:05,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 35 transitions, 162 flow. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:05,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:05,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 19:18:05,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:05,719 INFO L124 PetriNetUnfolderBase]: 216/388 cut-off events. [2024-06-27 19:18:05,720 INFO L125 PetriNetUnfolderBase]: For 484/484 co-relation queries the response was YES. [2024-06-27 19:18:05,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1168 conditions, 388 events. 216/388 cut-off events. For 484/484 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1382 event pairs, 28 based on Foata normal form. 6/393 useless extension candidates. Maximal degree in co-relation 1151. Up to 297 conditions per place. [2024-06-27 19:18:05,723 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 37 selfloop transitions, 13 changer transitions 0/53 dead transitions. [2024-06-27 19:18:05,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 53 transitions, 312 flow [2024-06-27 19:18:05,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:18:05,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:18:05,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 92 transitions. [2024-06-27 19:18:05,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4946236559139785 [2024-06-27 19:18:05,725 INFO L175 Difference]: Start difference. First operand has 39 places, 35 transitions, 162 flow. Second operand 6 states and 92 transitions. [2024-06-27 19:18:05,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 53 transitions, 312 flow [2024-06-27 19:18:05,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 53 transitions, 308 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-27 19:18:05,729 INFO L231 Difference]: Finished difference. Result has 44 places, 35 transitions, 187 flow [2024-06-27 19:18:05,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=187, PETRI_PLACES=44, PETRI_TRANSITIONS=35} [2024-06-27 19:18:05,730 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 14 predicate places. [2024-06-27 19:18:05,730 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 35 transitions, 187 flow [2024-06-27 19:18:05,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:05,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:05,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:05,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 19:18:05,731 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:18:05,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:05,731 INFO L85 PathProgramCache]: Analyzing trace with hash -157977323, now seen corresponding path program 1 times [2024-06-27 19:18:05,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:05,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496983099] [2024-06-27 19:18:05,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:05,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:05,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:06,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:06,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:06,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496983099] [2024-06-27 19:18:06,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496983099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:06,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:06,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:18:06,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240990967] [2024-06-27 19:18:06,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:06,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:18:06,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:06,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:18:06,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:18:06,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:18:06,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 35 transitions, 187 flow. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:06,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:06,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:18:06,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:06,498 INFO L124 PetriNetUnfolderBase]: 214/385 cut-off events. [2024-06-27 19:18:06,498 INFO L125 PetriNetUnfolderBase]: For 686/686 co-relation queries the response was YES. [2024-06-27 19:18:06,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1264 conditions, 385 events. 214/385 cut-off events. For 686/686 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1369 event pairs, 77 based on Foata normal form. 1/385 useless extension candidates. Maximal degree in co-relation 1243. Up to 374 conditions per place. [2024-06-27 19:18:06,501 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 32 selfloop transitions, 6 changer transitions 0/40 dead transitions. [2024-06-27 19:18:06,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 40 transitions, 275 flow [2024-06-27 19:18:06,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:18:06,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:18:06,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 55 transitions. [2024-06-27 19:18:06,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 19:18:06,503 INFO L175 Difference]: Start difference. First operand has 44 places, 35 transitions, 187 flow. Second operand 5 states and 55 transitions. [2024-06-27 19:18:06,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 40 transitions, 275 flow [2024-06-27 19:18:06,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 40 transitions, 244 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 19:18:06,506 INFO L231 Difference]: Finished difference. Result has 45 places, 35 transitions, 173 flow [2024-06-27 19:18:06,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=173, PETRI_PLACES=45, PETRI_TRANSITIONS=35} [2024-06-27 19:18:06,507 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 15 predicate places. [2024-06-27 19:18:06,507 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 35 transitions, 173 flow [2024-06-27 19:18:06,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:06,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:06,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:06,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 19:18:06,508 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:18:06,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:06,509 INFO L85 PathProgramCache]: Analyzing trace with hash -613427755, now seen corresponding path program 1 times [2024-06-27 19:18:06,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:06,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949325741] [2024-06-27 19:18:06,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:06,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:06,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:07,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:07,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:07,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949325741] [2024-06-27 19:18:07,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949325741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:07,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:07,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:18:07,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979010521] [2024-06-27 19:18:07,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:07,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:18:07,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:07,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:18:07,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:18:07,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:18:07,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 35 transitions, 173 flow. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:07,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:07,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:18:07,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:07,267 INFO L124 PetriNetUnfolderBase]: 212/382 cut-off events. [2024-06-27 19:18:07,268 INFO L125 PetriNetUnfolderBase]: For 810/810 co-relation queries the response was YES. [2024-06-27 19:18:07,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1242 conditions, 382 events. 212/382 cut-off events. For 810/810 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1363 event pairs, 76 based on Foata normal form. 1/382 useless extension candidates. Maximal degree in co-relation 1219. Up to 368 conditions per place. [2024-06-27 19:18:07,271 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 33 selfloop transitions, 8 changer transitions 0/43 dead transitions. [2024-06-27 19:18:07,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 43 transitions, 277 flow [2024-06-27 19:18:07,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:18:07,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:18:07,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 63 transitions. [2024-06-27 19:18:07,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-27 19:18:07,273 INFO L175 Difference]: Start difference. First operand has 45 places, 35 transitions, 173 flow. Second operand 6 states and 63 transitions. [2024-06-27 19:18:07,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 43 transitions, 277 flow [2024-06-27 19:18:07,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 43 transitions, 262 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-27 19:18:07,276 INFO L231 Difference]: Finished difference. Result has 47 places, 37 transitions, 191 flow [2024-06-27 19:18:07,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=191, PETRI_PLACES=47, PETRI_TRANSITIONS=37} [2024-06-27 19:18:07,277 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2024-06-27 19:18:07,277 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 37 transitions, 191 flow [2024-06-27 19:18:07,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:07,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:07,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:07,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 19:18:07,278 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:18:07,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:07,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1498775064, now seen corresponding path program 1 times [2024-06-27 19:18:07,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:07,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587703969] [2024-06-27 19:18:07,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:07,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:07,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:07,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:07,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:07,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587703969] [2024-06-27 19:18:07,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587703969] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:07,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:07,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:18:07,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767594189] [2024-06-27 19:18:07,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:07,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:18:07,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:07,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:18:07,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:18:07,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:18:07,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 37 transitions, 191 flow. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:07,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:07,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:18:07,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:08,039 INFO L124 PetriNetUnfolderBase]: 211/381 cut-off events. [2024-06-27 19:18:08,039 INFO L125 PetriNetUnfolderBase]: For 1022/1022 co-relation queries the response was YES. [2024-06-27 19:18:08,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1310 conditions, 381 events. 211/381 cut-off events. For 1022/1022 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1340 event pairs, 53 based on Foata normal form. 3/383 useless extension candidates. Maximal degree in co-relation 1287. Up to 318 conditions per place. [2024-06-27 19:18:08,043 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 36 selfloop transitions, 13 changer transitions 0/51 dead transitions. [2024-06-27 19:18:08,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 51 transitions, 342 flow [2024-06-27 19:18:08,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:18:08,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:18:08,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 73 transitions. [2024-06-27 19:18:08,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3924731182795699 [2024-06-27 19:18:08,045 INFO L175 Difference]: Start difference. First operand has 47 places, 37 transitions, 191 flow. Second operand 6 states and 73 transitions. [2024-06-27 19:18:08,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 51 transitions, 342 flow [2024-06-27 19:18:08,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 51 transitions, 325 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 19:18:08,049 INFO L231 Difference]: Finished difference. Result has 49 places, 39 transitions, 222 flow [2024-06-27 19:18:08,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=222, PETRI_PLACES=49, PETRI_TRANSITIONS=39} [2024-06-27 19:18:08,051 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 19 predicate places. [2024-06-27 19:18:08,051 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 39 transitions, 222 flow [2024-06-27 19:18:08,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:08,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:08,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:08,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 19:18:08,052 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:18:08,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:08,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1268182826, now seen corresponding path program 2 times [2024-06-27 19:18:08,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:08,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446294575] [2024-06-27 19:18:08,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:08,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:08,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:08,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:08,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:08,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446294575] [2024-06-27 19:18:08,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446294575] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:08,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:08,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:18:08,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173514681] [2024-06-27 19:18:08,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:08,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:18:08,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:08,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:18:08,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:18:08,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:18:08,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 39 transitions, 222 flow. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:08,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:08,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:18:08,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:08,817 INFO L124 PetriNetUnfolderBase]: 206/373 cut-off events. [2024-06-27 19:18:08,817 INFO L125 PetriNetUnfolderBase]: For 1294/1294 co-relation queries the response was YES. [2024-06-27 19:18:08,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1343 conditions, 373 events. 206/373 cut-off events. For 1294/1294 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1308 event pairs, 66 based on Foata normal form. 1/370 useless extension candidates. Maximal degree in co-relation 1319. Up to 311 conditions per place. [2024-06-27 19:18:08,821 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 31 selfloop transitions, 14 changer transitions 0/47 dead transitions. [2024-06-27 19:18:08,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 47 transitions, 330 flow [2024-06-27 19:18:08,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:18:08,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:18:08,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 70 transitions. [2024-06-27 19:18:08,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-27 19:18:08,823 INFO L175 Difference]: Start difference. First operand has 49 places, 39 transitions, 222 flow. Second operand 6 states and 70 transitions. [2024-06-27 19:18:08,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 47 transitions, 330 flow [2024-06-27 19:18:08,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 47 transitions, 315 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-27 19:18:08,827 INFO L231 Difference]: Finished difference. Result has 52 places, 39 transitions, 240 flow [2024-06-27 19:18:08,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=240, PETRI_PLACES=52, PETRI_TRANSITIONS=39} [2024-06-27 19:18:08,829 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 22 predicate places. [2024-06-27 19:18:08,830 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 39 transitions, 240 flow [2024-06-27 19:18:08,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:08,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:08,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:08,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 19:18:08,831 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:18:08,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:08,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1503922118, now seen corresponding path program 1 times [2024-06-27 19:18:08,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:08,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947379485] [2024-06-27 19:18:08,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:08,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:08,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:09,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:09,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:09,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947379485] [2024-06-27 19:18:09,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947379485] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:09,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:09,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:18:09,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523087986] [2024-06-27 19:18:09,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:09,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:18:09,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:09,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:18:09,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:18:09,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:18:09,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 240 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:09,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:09,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:18:09,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:09,761 INFO L124 PetriNetUnfolderBase]: 204/368 cut-off events. [2024-06-27 19:18:09,761 INFO L125 PetriNetUnfolderBase]: For 1526/1526 co-relation queries the response was YES. [2024-06-27 19:18:09,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1378 conditions, 368 events. 204/368 cut-off events. For 1526/1526 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1297 event pairs, 71 based on Foata normal form. 1/368 useless extension candidates. Maximal degree in co-relation 1353. Up to 351 conditions per place. [2024-06-27 19:18:09,766 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 36 selfloop transitions, 10 changer transitions 0/48 dead transitions. [2024-06-27 19:18:09,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 48 transitions, 358 flow [2024-06-27 19:18:09,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:18:09,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:18:09,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 71 transitions. [2024-06-27 19:18:09,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3271889400921659 [2024-06-27 19:18:09,767 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 240 flow. Second operand 7 states and 71 transitions. [2024-06-27 19:18:09,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 48 transitions, 358 flow [2024-06-27 19:18:09,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 48 transitions, 312 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 19:18:09,773 INFO L231 Difference]: Finished difference. Result has 53 places, 41 transitions, 233 flow [2024-06-27 19:18:09,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=233, PETRI_PLACES=53, PETRI_TRANSITIONS=41} [2024-06-27 19:18:09,774 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 23 predicate places. [2024-06-27 19:18:09,774 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 41 transitions, 233 flow [2024-06-27 19:18:09,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:09,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:09,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:09,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 19:18:09,775 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:18:09,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:09,776 INFO L85 PathProgramCache]: Analyzing trace with hash 782614784, now seen corresponding path program 1 times [2024-06-27 19:18:09,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:09,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149847571] [2024-06-27 19:18:09,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:09,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:09,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:10,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:10,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:10,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149847571] [2024-06-27 19:18:10,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149847571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:10,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:10,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:18:10,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69071702] [2024-06-27 19:18:10,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:10,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:18:10,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:10,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:18:10,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:18:10,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:18:10,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 233 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:10,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:10,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:18:10,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:10,669 INFO L124 PetriNetUnfolderBase]: 213/384 cut-off events. [2024-06-27 19:18:10,670 INFO L125 PetriNetUnfolderBase]: For 1865/1865 co-relation queries the response was YES. [2024-06-27 19:18:10,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1449 conditions, 384 events. 213/384 cut-off events. For 1865/1865 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1378 event pairs, 56 based on Foata normal form. 3/385 useless extension candidates. Maximal degree in co-relation 1423. Up to 314 conditions per place. [2024-06-27 19:18:10,673 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 38 selfloop transitions, 20 changer transitions 0/60 dead transitions. [2024-06-27 19:18:10,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 60 transitions, 411 flow [2024-06-27 19:18:10,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:18:10,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:18:10,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-27 19:18:10,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37327188940092165 [2024-06-27 19:18:10,674 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 233 flow. Second operand 7 states and 81 transitions. [2024-06-27 19:18:10,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 60 transitions, 411 flow [2024-06-27 19:18:10,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 60 transitions, 388 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 19:18:10,678 INFO L231 Difference]: Finished difference. Result has 57 places, 49 transitions, 317 flow [2024-06-27 19:18:10,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=317, PETRI_PLACES=57, PETRI_TRANSITIONS=49} [2024-06-27 19:18:10,679 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 27 predicate places. [2024-06-27 19:18:10,679 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 317 flow [2024-06-27 19:18:10,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:10,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:10,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:10,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 19:18:10,680 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:18:10,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:10,681 INFO L85 PathProgramCache]: Analyzing trace with hash 982983284, now seen corresponding path program 2 times [2024-06-27 19:18:10,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:10,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102501878] [2024-06-27 19:18:10,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:10,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:10,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:11,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:11,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:11,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102501878] [2024-06-27 19:18:11,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102501878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:11,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:11,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:18:11,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398701750] [2024-06-27 19:18:11,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:11,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:18:11,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:11,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:18:11,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:18:11,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:18:11,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 49 transitions, 317 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:11,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:11,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:18:11,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:11,476 INFO L124 PetriNetUnfolderBase]: 216/390 cut-off events. [2024-06-27 19:18:11,476 INFO L125 PetriNetUnfolderBase]: For 2321/2324 co-relation queries the response was YES. [2024-06-27 19:18:11,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1667 conditions, 390 events. 216/390 cut-off events. For 2321/2324 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1373 event pairs, 63 based on Foata normal form. 1/388 useless extension candidates. Maximal degree in co-relation 1638. Up to 325 conditions per place. [2024-06-27 19:18:11,480 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 37 selfloop transitions, 19 changer transitions 0/58 dead transitions. [2024-06-27 19:18:11,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 58 transitions, 459 flow [2024-06-27 19:18:11,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:18:11,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:18:11,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-27 19:18:11,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35944700460829493 [2024-06-27 19:18:11,482 INFO L175 Difference]: Start difference. First operand has 57 places, 49 transitions, 317 flow. Second operand 7 states and 78 transitions. [2024-06-27 19:18:11,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 58 transitions, 459 flow [2024-06-27 19:18:11,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 58 transitions, 438 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-27 19:18:11,487 INFO L231 Difference]: Finished difference. Result has 62 places, 51 transitions, 357 flow [2024-06-27 19:18:11,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=357, PETRI_PLACES=62, PETRI_TRANSITIONS=51} [2024-06-27 19:18:11,488 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 32 predicate places. [2024-06-27 19:18:11,488 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 51 transitions, 357 flow [2024-06-27 19:18:11,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:11,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:11,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:11,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 19:18:11,489 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:18:11,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:11,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1093512524, now seen corresponding path program 3 times [2024-06-27 19:18:11,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:11,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128368997] [2024-06-27 19:18:11,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:11,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:11,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:11,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:11,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:11,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128368997] [2024-06-27 19:18:11,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128368997] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:11,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:11,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:18:11,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255459552] [2024-06-27 19:18:11,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:11,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:18:11,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:11,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:18:11,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:18:12,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:18:12,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 51 transitions, 357 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:12,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:12,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:18:12,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:12,309 INFO L124 PetriNetUnfolderBase]: 219/395 cut-off events. [2024-06-27 19:18:12,310 INFO L125 PetriNetUnfolderBase]: For 2856/2859 co-relation queries the response was YES. [2024-06-27 19:18:12,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1760 conditions, 395 events. 219/395 cut-off events. For 2856/2859 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1401 event pairs, 62 based on Foata normal form. 1/393 useless extension candidates. Maximal degree in co-relation 1729. Up to 311 conditions per place. [2024-06-27 19:18:12,313 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 35 selfloop transitions, 27 changer transitions 0/64 dead transitions. [2024-06-27 19:18:12,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 64 transitions, 559 flow [2024-06-27 19:18:12,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:18:12,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:18:12,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2024-06-27 19:18:12,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778801843317972 [2024-06-27 19:18:12,315 INFO L175 Difference]: Start difference. First operand has 62 places, 51 transitions, 357 flow. Second operand 7 states and 82 transitions. [2024-06-27 19:18:12,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 64 transitions, 559 flow [2024-06-27 19:18:12,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 64 transitions, 514 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-27 19:18:12,320 INFO L231 Difference]: Finished difference. Result has 65 places, 55 transitions, 422 flow [2024-06-27 19:18:12,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=422, PETRI_PLACES=65, PETRI_TRANSITIONS=55} [2024-06-27 19:18:12,321 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 35 predicate places. [2024-06-27 19:18:12,321 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 55 transitions, 422 flow [2024-06-27 19:18:12,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:12,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:12,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:12,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 19:18:12,322 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:18:12,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:12,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1093503596, now seen corresponding path program 1 times [2024-06-27 19:18:12,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:12,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335442619] [2024-06-27 19:18:12,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:12,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:12,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:13,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:13,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:13,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335442619] [2024-06-27 19:18:13,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335442619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:13,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:13,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:18:13,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790800667] [2024-06-27 19:18:13,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:13,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:18:13,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:13,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:18:13,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:18:13,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:18:13,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 55 transitions, 422 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:13,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:13,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:18:13,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:13,946 INFO L124 PetriNetUnfolderBase]: 217/390 cut-off events. [2024-06-27 19:18:13,947 INFO L125 PetriNetUnfolderBase]: For 3237/3237 co-relation queries the response was YES. [2024-06-27 19:18:13,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1861 conditions, 390 events. 217/390 cut-off events. For 3237/3237 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1365 event pairs, 47 based on Foata normal form. 1/390 useless extension candidates. Maximal degree in co-relation 1828. Up to 366 conditions per place. [2024-06-27 19:18:13,950 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 52 selfloop transitions, 14 changer transitions 0/68 dead transitions. [2024-06-27 19:18:13,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 68 transitions, 622 flow [2024-06-27 19:18:13,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:18:13,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:18:13,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 81 transitions. [2024-06-27 19:18:13,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32661290322580644 [2024-06-27 19:18:13,952 INFO L175 Difference]: Start difference. First operand has 65 places, 55 transitions, 422 flow. Second operand 8 states and 81 transitions. [2024-06-27 19:18:13,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 68 transitions, 622 flow [2024-06-27 19:18:13,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 68 transitions, 583 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-27 19:18:13,960 INFO L231 Difference]: Finished difference. Result has 71 places, 59 transitions, 452 flow [2024-06-27 19:18:13,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=452, PETRI_PLACES=71, PETRI_TRANSITIONS=59} [2024-06-27 19:18:13,961 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 41 predicate places. [2024-06-27 19:18:13,962 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 59 transitions, 452 flow [2024-06-27 19:18:13,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:13,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:13,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:13,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 19:18:13,962 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:18:13,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:13,963 INFO L85 PathProgramCache]: Analyzing trace with hash -742615604, now seen corresponding path program 1 times [2024-06-27 19:18:13,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:13,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740209341] [2024-06-27 19:18:13,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:13,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:13,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:14,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:14,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:14,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740209341] [2024-06-27 19:18:14,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740209341] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:14,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:14,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:18:14,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287013121] [2024-06-27 19:18:14,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:14,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:18:14,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:14,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:18:14,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:18:14,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:18:14,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 59 transitions, 452 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:14,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:14,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:18:14,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:14,785 INFO L124 PetriNetUnfolderBase]: 223/401 cut-off events. [2024-06-27 19:18:14,785 INFO L125 PetriNetUnfolderBase]: For 3777/3777 co-relation queries the response was YES. [2024-06-27 19:18:14,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1996 conditions, 401 events. 223/401 cut-off events. For 3777/3777 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1429 event pairs, 55 based on Foata normal form. 2/401 useless extension candidates. Maximal degree in co-relation 1960. Up to 334 conditions per place. [2024-06-27 19:18:14,789 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 53 selfloop transitions, 20 changer transitions 0/75 dead transitions. [2024-06-27 19:18:14,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 75 transitions, 654 flow [2024-06-27 19:18:14,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:18:14,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:18:14,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-06-27 19:18:14,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3824884792626728 [2024-06-27 19:18:14,791 INFO L175 Difference]: Start difference. First operand has 71 places, 59 transitions, 452 flow. Second operand 7 states and 83 transitions. [2024-06-27 19:18:14,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 75 transitions, 654 flow [2024-06-27 19:18:14,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 75 transitions, 627 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 19:18:14,798 INFO L231 Difference]: Finished difference. Result has 73 places, 61 transitions, 492 flow [2024-06-27 19:18:14,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=492, PETRI_PLACES=73, PETRI_TRANSITIONS=61} [2024-06-27 19:18:14,799 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 43 predicate places. [2024-06-27 19:18:14,799 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 61 transitions, 492 flow [2024-06-27 19:18:14,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:14,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:14,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:14,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 19:18:14,800 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:18:14,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:14,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1173559012, now seen corresponding path program 2 times [2024-06-27 19:18:14,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:14,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750488699] [2024-06-27 19:18:14,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:14,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:14,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:15,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:15,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:15,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750488699] [2024-06-27 19:18:15,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750488699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:15,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:15,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:18:15,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389720808] [2024-06-27 19:18:15,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:15,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:18:15,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:15,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:18:15,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:18:15,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:18:15,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 61 transitions, 492 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:15,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:15,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:18:15,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:15,584 INFO L124 PetriNetUnfolderBase]: 229/411 cut-off events. [2024-06-27 19:18:15,584 INFO L125 PetriNetUnfolderBase]: For 4404/4404 co-relation queries the response was YES. [2024-06-27 19:18:15,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2146 conditions, 411 events. 229/411 cut-off events. For 4404/4404 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1482 event pairs, 55 based on Foata normal form. 2/411 useless extension candidates. Maximal degree in co-relation 2109. Up to 324 conditions per place. [2024-06-27 19:18:15,589 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 50 selfloop transitions, 23 changer transitions 0/75 dead transitions. [2024-06-27 19:18:15,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 75 transitions, 696 flow [2024-06-27 19:18:15,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:18:15,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:18:15,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-27 19:18:15,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37327188940092165 [2024-06-27 19:18:15,590 INFO L175 Difference]: Start difference. First operand has 73 places, 61 transitions, 492 flow. Second operand 7 states and 81 transitions. [2024-06-27 19:18:15,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 75 transitions, 696 flow [2024-06-27 19:18:15,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 75 transitions, 643 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-27 19:18:15,599 INFO L231 Difference]: Finished difference. Result has 75 places, 63 transitions, 517 flow [2024-06-27 19:18:15,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=517, PETRI_PLACES=75, PETRI_TRANSITIONS=63} [2024-06-27 19:18:15,600 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 45 predicate places. [2024-06-27 19:18:15,601 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 63 transitions, 517 flow [2024-06-27 19:18:15,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:15,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:15,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:15,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 19:18:15,601 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:18:15,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:15,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1173558795, now seen corresponding path program 1 times [2024-06-27 19:18:15,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:15,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116910241] [2024-06-27 19:18:15,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:15,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:15,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:16,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:16,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:16,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116910241] [2024-06-27 19:18:16,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116910241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:16,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:16,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:18:16,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352391215] [2024-06-27 19:18:16,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:16,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:18:16,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:16,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:18:16,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:18:16,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:18:16,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 63 transitions, 517 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:16,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:16,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:18:16,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:16,617 INFO L124 PetriNetUnfolderBase]: 238/426 cut-off events. [2024-06-27 19:18:16,617 INFO L125 PetriNetUnfolderBase]: For 5113/5113 co-relation queries the response was YES. [2024-06-27 19:18:16,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2267 conditions, 426 events. 238/426 cut-off events. For 5113/5113 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1564 event pairs, 53 based on Foata normal form. 3/427 useless extension candidates. Maximal degree in co-relation 2229. Up to 345 conditions per place. [2024-06-27 19:18:16,622 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 54 selfloop transitions, 23 changer transitions 0/79 dead transitions. [2024-06-27 19:18:16,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 79 transitions, 737 flow [2024-06-27 19:18:16,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:18:16,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:18:16,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-27 19:18:16,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36693548387096775 [2024-06-27 19:18:16,624 INFO L175 Difference]: Start difference. First operand has 75 places, 63 transitions, 517 flow. Second operand 8 states and 91 transitions. [2024-06-27 19:18:16,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 79 transitions, 737 flow [2024-06-27 19:18:16,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 79 transitions, 677 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-27 19:18:16,631 INFO L231 Difference]: Finished difference. Result has 78 places, 66 transitions, 543 flow [2024-06-27 19:18:16,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=543, PETRI_PLACES=78, PETRI_TRANSITIONS=66} [2024-06-27 19:18:16,632 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 48 predicate places. [2024-06-27 19:18:16,632 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 66 transitions, 543 flow [2024-06-27 19:18:16,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:16,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:16,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:16,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 19:18:16,633 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:18:16,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:16,633 INFO L85 PathProgramCache]: Analyzing trace with hash 573946055, now seen corresponding path program 2 times [2024-06-27 19:18:16,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:16,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011349499] [2024-06-27 19:18:16,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:16,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:16,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:17,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:17,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:17,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011349499] [2024-06-27 19:18:17,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011349499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:17,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:17,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:18:17,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941186771] [2024-06-27 19:18:17,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:17,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:18:17,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:17,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:18:17,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:18:17,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:18:17,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 66 transitions, 543 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:17,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:17,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:18:17,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:17,693 INFO L124 PetriNetUnfolderBase]: 241/433 cut-off events. [2024-06-27 19:18:17,693 INFO L125 PetriNetUnfolderBase]: For 5511/5511 co-relation queries the response was YES. [2024-06-27 19:18:17,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2365 conditions, 433 events. 241/433 cut-off events. For 5511/5511 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1591 event pairs, 53 based on Foata normal form. 1/430 useless extension candidates. Maximal degree in co-relation 2326. Up to 364 conditions per place. [2024-06-27 19:18:17,698 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 55 selfloop transitions, 23 changer transitions 0/80 dead transitions. [2024-06-27 19:18:17,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 80 transitions, 775 flow [2024-06-27 19:18:17,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:18:17,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:18:17,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-27 19:18:17,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34050179211469533 [2024-06-27 19:18:17,699 INFO L175 Difference]: Start difference. First operand has 78 places, 66 transitions, 543 flow. Second operand 9 states and 95 transitions. [2024-06-27 19:18:17,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 80 transitions, 775 flow [2024-06-27 19:18:17,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 80 transitions, 705 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-27 19:18:17,708 INFO L231 Difference]: Finished difference. Result has 82 places, 70 transitions, 570 flow [2024-06-27 19:18:17,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=570, PETRI_PLACES=82, PETRI_TRANSITIONS=70} [2024-06-27 19:18:17,709 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 52 predicate places. [2024-06-27 19:18:17,709 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 70 transitions, 570 flow [2024-06-27 19:18:17,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:17,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:17,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:17,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 19:18:17,710 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:18:17,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:17,711 INFO L85 PathProgramCache]: Analyzing trace with hash 2134863833, now seen corresponding path program 3 times [2024-06-27 19:18:17,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:17,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487475033] [2024-06-27 19:18:17,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:17,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:17,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:18,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:18,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:18,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487475033] [2024-06-27 19:18:18,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487475033] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:18,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:18,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:18:18,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383209619] [2024-06-27 19:18:18,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:18,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:18:18,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:18,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:18:18,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:18:18,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:18:18,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 70 transitions, 570 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:18,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:18,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:18:18,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:18,661 INFO L124 PetriNetUnfolderBase]: 244/435 cut-off events. [2024-06-27 19:18:18,661 INFO L125 PetriNetUnfolderBase]: For 6025/6025 co-relation queries the response was YES. [2024-06-27 19:18:18,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2435 conditions, 435 events. 244/435 cut-off events. For 6025/6025 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1583 event pairs, 48 based on Foata normal form. 1/435 useless extension candidates. Maximal degree in co-relation 2394. Up to 415 conditions per place. [2024-06-27 19:18:18,665 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 66 selfloop transitions, 12 changer transitions 0/80 dead transitions. [2024-06-27 19:18:18,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 80 transitions, 771 flow [2024-06-27 19:18:18,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:18:18,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:18:18,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 79 transitions. [2024-06-27 19:18:18,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3185483870967742 [2024-06-27 19:18:18,667 INFO L175 Difference]: Start difference. First operand has 82 places, 70 transitions, 570 flow. Second operand 8 states and 79 transitions. [2024-06-27 19:18:18,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 80 transitions, 771 flow [2024-06-27 19:18:18,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 80 transitions, 725 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-27 19:18:18,679 INFO L231 Difference]: Finished difference. Result has 85 places, 72 transitions, 581 flow [2024-06-27 19:18:18,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=581, PETRI_PLACES=85, PETRI_TRANSITIONS=72} [2024-06-27 19:18:18,680 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 55 predicate places. [2024-06-27 19:18:18,680 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 72 transitions, 581 flow [2024-06-27 19:18:18,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:18,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:18,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:18,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 19:18:18,682 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:18:18,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:18,683 INFO L85 PathProgramCache]: Analyzing trace with hash 460851450, now seen corresponding path program 3 times [2024-06-27 19:18:18,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:18,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037599868] [2024-06-27 19:18:18,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:18,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:18,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:19,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:19,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:19,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037599868] [2024-06-27 19:18:19,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037599868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:19,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:19,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:18:19,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322630119] [2024-06-27 19:18:19,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:19,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:18:19,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:19,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:18:19,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:18:19,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:18:19,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 72 transitions, 581 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:19,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:19,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:18:19,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:19,410 INFO L124 PetriNetUnfolderBase]: 245/439 cut-off events. [2024-06-27 19:18:19,410 INFO L125 PetriNetUnfolderBase]: For 6956/6959 co-relation queries the response was YES. [2024-06-27 19:18:19,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2478 conditions, 439 events. 245/439 cut-off events. For 6956/6959 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1626 event pairs, 64 based on Foata normal form. 2/438 useless extension candidates. Maximal degree in co-relation 2435. Up to 331 conditions per place. [2024-06-27 19:18:19,414 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 55 selfloop transitions, 28 changer transitions 0/85 dead transitions. [2024-06-27 19:18:19,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 85 transitions, 867 flow [2024-06-27 19:18:19,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:18:19,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:18:19,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-06-27 19:18:19,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3686635944700461 [2024-06-27 19:18:19,417 INFO L175 Difference]: Start difference. First operand has 85 places, 72 transitions, 581 flow. Second operand 7 states and 80 transitions. [2024-06-27 19:18:19,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 85 transitions, 867 flow [2024-06-27 19:18:19,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 85 transitions, 826 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-27 19:18:19,427 INFO L231 Difference]: Finished difference. Result has 86 places, 76 transitions, 661 flow [2024-06-27 19:18:19,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=661, PETRI_PLACES=86, PETRI_TRANSITIONS=76} [2024-06-27 19:18:19,428 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 56 predicate places. [2024-06-27 19:18:19,428 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 76 transitions, 661 flow [2024-06-27 19:18:19,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:19,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:19,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:19,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 19:18:19,429 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:18:19,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:19,429 INFO L85 PathProgramCache]: Analyzing trace with hash 415063925, now seen corresponding path program 4 times [2024-06-27 19:18:19,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:19,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801488590] [2024-06-27 19:18:19,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:19,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:19,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:20,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:20,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:20,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801488590] [2024-06-27 19:18:20,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801488590] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:20,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:20,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:18:20,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202347190] [2024-06-27 19:18:20,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:20,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:18:20,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:20,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:18:20,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:18:20,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:18:20,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 76 transitions, 661 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:20,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:20,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:18:20,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:20,382 INFO L124 PetriNetUnfolderBase]: 248/444 cut-off events. [2024-06-27 19:18:20,382 INFO L125 PetriNetUnfolderBase]: For 7485/7488 co-relation queries the response was YES. [2024-06-27 19:18:20,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2601 conditions, 444 events. 248/444 cut-off events. For 7485/7488 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1640 event pairs, 62 based on Foata normal form. 1/442 useless extension candidates. Maximal degree in co-relation 2557. Up to 332 conditions per place. [2024-06-27 19:18:20,387 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 50 selfloop transitions, 37 changer transitions 0/89 dead transitions. [2024-06-27 19:18:20,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 89 transitions, 951 flow [2024-06-27 19:18:20,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:18:20,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:18:20,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-27 19:18:20,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-27 19:18:20,389 INFO L175 Difference]: Start difference. First operand has 86 places, 76 transitions, 661 flow. Second operand 8 states and 92 transitions. [2024-06-27 19:18:20,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 89 transitions, 951 flow [2024-06-27 19:18:20,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 89 transitions, 904 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-27 19:18:20,402 INFO L231 Difference]: Finished difference. Result has 92 places, 80 transitions, 771 flow [2024-06-27 19:18:20,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=771, PETRI_PLACES=92, PETRI_TRANSITIONS=80} [2024-06-27 19:18:20,403 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 62 predicate places. [2024-06-27 19:18:20,403 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 80 transitions, 771 flow [2024-06-27 19:18:20,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:20,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:20,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:20,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 19:18:20,404 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:18:20,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:20,404 INFO L85 PathProgramCache]: Analyzing trace with hash 461128497, now seen corresponding path program 1 times [2024-06-27 19:18:20,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:20,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756947598] [2024-06-27 19:18:20,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:20,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:20,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:22,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:22,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:22,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756947598] [2024-06-27 19:18:22,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756947598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:22,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:22,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:18:22,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839478786] [2024-06-27 19:18:22,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:22,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:18:22,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:22,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:18:22,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:18:22,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:18:22,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 80 transitions, 771 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:22,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:22,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:18:22,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:22,676 INFO L124 PetriNetUnfolderBase]: 246/439 cut-off events. [2024-06-27 19:18:22,676 INFO L125 PetriNetUnfolderBase]: For 7898/7898 co-relation queries the response was YES. [2024-06-27 19:18:22,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2698 conditions, 439 events. 246/439 cut-off events. For 7898/7898 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1611 event pairs, 48 based on Foata normal form. 1/439 useless extension candidates. Maximal degree in co-relation 2651. Up to 416 conditions per place. [2024-06-27 19:18:22,681 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 73 selfloop transitions, 14 changer transitions 0/89 dead transitions. [2024-06-27 19:18:22,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 89 transitions, 968 flow [2024-06-27 19:18:22,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:18:22,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:18:22,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 87 transitions. [2024-06-27 19:18:22,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3118279569892473 [2024-06-27 19:18:22,683 INFO L175 Difference]: Start difference. First operand has 92 places, 80 transitions, 771 flow. Second operand 9 states and 87 transitions. [2024-06-27 19:18:22,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 89 transitions, 968 flow [2024-06-27 19:18:22,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 89 transitions, 908 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-27 19:18:22,696 INFO L231 Difference]: Finished difference. Result has 97 places, 80 transitions, 744 flow [2024-06-27 19:18:22,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=711, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=744, PETRI_PLACES=97, PETRI_TRANSITIONS=80} [2024-06-27 19:18:22,696 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 67 predicate places. [2024-06-27 19:18:22,697 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 80 transitions, 744 flow [2024-06-27 19:18:22,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:22,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:22,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:22,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 19:18:22,697 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:18:22,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:22,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1664398791, now seen corresponding path program 1 times [2024-06-27 19:18:22,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:22,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755222529] [2024-06-27 19:18:22,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:22,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:22,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:23,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:23,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:23,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755222529] [2024-06-27 19:18:23,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755222529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:23,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:23,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:18:23,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124876740] [2024-06-27 19:18:23,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:23,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:18:23,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:23,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:18:23,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:18:23,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:18:23,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 80 transitions, 744 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:23,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:23,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:18:23,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:23,975 INFO L124 PetriNetUnfolderBase]: 250/447 cut-off events. [2024-06-27 19:18:23,976 INFO L125 PetriNetUnfolderBase]: For 8675/8675 co-relation queries the response was YES. [2024-06-27 19:18:23,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2741 conditions, 447 events. 250/447 cut-off events. For 8675/8675 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1675 event pairs, 27 based on Foata normal form. 2/448 useless extension candidates. Maximal degree in co-relation 2692. Up to 346 conditions per place. [2024-06-27 19:18:23,981 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 74 selfloop transitions, 17 changer transitions 0/93 dead transitions. [2024-06-27 19:18:23,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 93 transitions, 1005 flow [2024-06-27 19:18:23,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:18:23,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:18:23,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-27 19:18:23,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35944700460829493 [2024-06-27 19:18:23,982 INFO L175 Difference]: Start difference. First operand has 97 places, 80 transitions, 744 flow. Second operand 7 states and 78 transitions. [2024-06-27 19:18:23,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 93 transitions, 1005 flow [2024-06-27 19:18:23,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 93 transitions, 972 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 19:18:23,997 INFO L231 Difference]: Finished difference. Result has 96 places, 81 transitions, 755 flow [2024-06-27 19:18:23,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=711, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=755, PETRI_PLACES=96, PETRI_TRANSITIONS=81} [2024-06-27 19:18:23,998 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 66 predicate places. [2024-06-27 19:18:23,998 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 81 transitions, 755 flow [2024-06-27 19:18:23,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:23,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:23,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:23,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 19:18:23,999 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:18:24,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:24,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1664338341, now seen corresponding path program 2 times [2024-06-27 19:18:24,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:24,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158689310] [2024-06-27 19:18:24,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:24,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:24,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:24,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:24,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:24,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158689310] [2024-06-27 19:18:24,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158689310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:24,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:24,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:18:24,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322508022] [2024-06-27 19:18:24,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:24,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:18:24,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:24,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:18:24,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:18:24,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:18:24,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 81 transitions, 755 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:24,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:24,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:18:24,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:25,295 INFO L124 PetriNetUnfolderBase]: 247/442 cut-off events. [2024-06-27 19:18:25,296 INFO L125 PetriNetUnfolderBase]: For 8967/8967 co-relation queries the response was YES. [2024-06-27 19:18:25,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2736 conditions, 442 events. 247/442 cut-off events. For 8967/8967 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1645 event pairs, 46 based on Foata normal form. 2/443 useless extension candidates. Maximal degree in co-relation 2686. Up to 376 conditions per place. [2024-06-27 19:18:25,301 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 71 selfloop transitions, 18 changer transitions 0/91 dead transitions. [2024-06-27 19:18:25,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 91 transitions, 960 flow [2024-06-27 19:18:25,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:18:25,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:18:25,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-06-27 19:18:25,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3686635944700461 [2024-06-27 19:18:25,302 INFO L175 Difference]: Start difference. First operand has 96 places, 81 transitions, 755 flow. Second operand 7 states and 80 transitions. [2024-06-27 19:18:25,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 91 transitions, 960 flow [2024-06-27 19:18:25,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 91 transitions, 928 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 19:18:25,319 INFO L231 Difference]: Finished difference. Result has 99 places, 81 transitions, 763 flow [2024-06-27 19:18:25,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=723, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=763, PETRI_PLACES=99, PETRI_TRANSITIONS=81} [2024-06-27 19:18:25,320 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 69 predicate places. [2024-06-27 19:18:25,320 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 81 transitions, 763 flow [2024-06-27 19:18:25,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:25,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:25,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:25,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 19:18:25,321 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:18:25,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:25,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1187684261, now seen corresponding path program 1 times [2024-06-27 19:18:25,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:25,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374450467] [2024-06-27 19:18:25,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:25,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:25,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:26,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:26,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:26,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374450467] [2024-06-27 19:18:26,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374450467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:26,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:26,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:18:26,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137631154] [2024-06-27 19:18:26,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:26,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:18:26,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:26,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:18:26,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:18:26,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:18:26,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 81 transitions, 763 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:26,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:26,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:18:26,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:26,591 INFO L124 PetriNetUnfolderBase]: 245/439 cut-off events. [2024-06-27 19:18:26,592 INFO L125 PetriNetUnfolderBase]: For 9130/9130 co-relation queries the response was YES. [2024-06-27 19:18:26,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2728 conditions, 439 events. 245/439 cut-off events. For 9130/9130 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1640 event pairs, 43 based on Foata normal form. 1/439 useless extension candidates. Maximal degree in co-relation 2677. Up to 367 conditions per place. [2024-06-27 19:18:26,596 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 67 selfloop transitions, 22 changer transitions 0/91 dead transitions. [2024-06-27 19:18:26,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 91 transitions, 972 flow [2024-06-27 19:18:26,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:18:26,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:18:26,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2024-06-27 19:18:26,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778801843317972 [2024-06-27 19:18:26,597 INFO L175 Difference]: Start difference. First operand has 99 places, 81 transitions, 763 flow. Second operand 7 states and 82 transitions. [2024-06-27 19:18:26,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 91 transitions, 972 flow [2024-06-27 19:18:26,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 91 transitions, 918 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-27 19:18:26,613 INFO L231 Difference]: Finished difference. Result has 99 places, 81 transitions, 762 flow [2024-06-27 19:18:26,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=709, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=762, PETRI_PLACES=99, PETRI_TRANSITIONS=81} [2024-06-27 19:18:26,613 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 69 predicate places. [2024-06-27 19:18:26,613 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 81 transitions, 762 flow [2024-06-27 19:18:26,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:26,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:26,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:26,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 19:18:26,614 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:18:26,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:26,615 INFO L85 PathProgramCache]: Analyzing trace with hash -2020767277, now seen corresponding path program 2 times [2024-06-27 19:18:26,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:26,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788848579] [2024-06-27 19:18:26,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:26,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:26,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:27,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:27,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:27,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788848579] [2024-06-27 19:18:27,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788848579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:27,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:27,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:18:27,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091315255] [2024-06-27 19:18:27,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:27,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:18:27,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:27,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:18:27,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:18:27,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:18:27,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 81 transitions, 762 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:27,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:27,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:18:27,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:27,823 INFO L124 PetriNetUnfolderBase]: 243/436 cut-off events. [2024-06-27 19:18:27,824 INFO L125 PetriNetUnfolderBase]: For 9479/9479 co-relation queries the response was YES. [2024-06-27 19:18:27,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2690 conditions, 436 events. 243/436 cut-off events. For 9479/9479 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1612 event pairs, 44 based on Foata normal form. 1/436 useless extension candidates. Maximal degree in co-relation 2639. Up to 367 conditions per place. [2024-06-27 19:18:27,828 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 70 selfloop transitions, 22 changer transitions 0/94 dead transitions. [2024-06-27 19:18:27,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 94 transitions, 988 flow [2024-06-27 19:18:27,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:18:27,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:18:27,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 84 transitions. [2024-06-27 19:18:27,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-27 19:18:27,830 INFO L175 Difference]: Start difference. First operand has 99 places, 81 transitions, 762 flow. Second operand 7 states and 84 transitions. [2024-06-27 19:18:27,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 94 transitions, 988 flow [2024-06-27 19:18:27,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 94 transitions, 932 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 19:18:27,845 INFO L231 Difference]: Finished difference. Result has 100 places, 81 transitions, 758 flow [2024-06-27 19:18:27,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=706, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=758, PETRI_PLACES=100, PETRI_TRANSITIONS=81} [2024-06-27 19:18:27,846 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 70 predicate places. [2024-06-27 19:18:27,846 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 81 transitions, 758 flow [2024-06-27 19:18:27,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:27,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:27,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:27,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 19:18:27,847 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:18:27,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:27,847 INFO L85 PathProgramCache]: Analyzing trace with hash -2020589461, now seen corresponding path program 1 times [2024-06-27 19:18:27,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:27,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080603510] [2024-06-27 19:18:27,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:27,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:27,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:28,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:28,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:28,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080603510] [2024-06-27 19:18:28,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080603510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:28,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:28,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:18:28,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976283630] [2024-06-27 19:18:28,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:28,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:18:28,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:28,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:18:28,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:18:28,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:18:28,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 81 transitions, 758 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:28,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:28,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:18:28,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:28,803 INFO L124 PetriNetUnfolderBase]: 249/447 cut-off events. [2024-06-27 19:18:28,803 INFO L125 PetriNetUnfolderBase]: For 10629/10629 co-relation queries the response was YES. [2024-06-27 19:18:28,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2778 conditions, 447 events. 249/447 cut-off events. For 10629/10629 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1691 event pairs, 48 based on Foata normal form. 2/447 useless extension candidates. Maximal degree in co-relation 2726. Up to 352 conditions per place. [2024-06-27 19:18:28,807 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 68 selfloop transitions, 26 changer transitions 0/96 dead transitions. [2024-06-27 19:18:28,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 96 transitions, 1017 flow [2024-06-27 19:18:28,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:18:28,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:18:28,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-27 19:18:28,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-27 19:18:28,809 INFO L175 Difference]: Start difference. First operand has 100 places, 81 transitions, 758 flow. Second operand 8 states and 90 transitions. [2024-06-27 19:18:28,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 96 transitions, 1017 flow [2024-06-27 19:18:28,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 96 transitions, 915 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-27 19:18:28,826 INFO L231 Difference]: Finished difference. Result has 100 places, 83 transitions, 743 flow [2024-06-27 19:18:28,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=743, PETRI_PLACES=100, PETRI_TRANSITIONS=83} [2024-06-27 19:18:28,827 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 70 predicate places. [2024-06-27 19:18:28,827 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 83 transitions, 743 flow [2024-06-27 19:18:28,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:28,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:28,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:28,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 19:18:28,828 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:18:28,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:28,829 INFO L85 PathProgramCache]: Analyzing trace with hash -2020582951, now seen corresponding path program 2 times [2024-06-27 19:18:28,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:28,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515145807] [2024-06-27 19:18:28,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:28,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:28,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:29,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:29,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:29,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515145807] [2024-06-27 19:18:29,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515145807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:29,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:29,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:18:29,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647939919] [2024-06-27 19:18:29,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:29,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:18:29,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:29,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:18:29,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:18:29,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:18:29,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 83 transitions, 743 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:29,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:29,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:18:29,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:29,746 INFO L124 PetriNetUnfolderBase]: 265/473 cut-off events. [2024-06-27 19:18:29,746 INFO L125 PetriNetUnfolderBase]: For 12335/12335 co-relation queries the response was YES. [2024-06-27 19:18:29,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2981 conditions, 473 events. 265/473 cut-off events. For 12335/12335 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1804 event pairs, 48 based on Foata normal form. 2/473 useless extension candidates. Maximal degree in co-relation 2930. Up to 345 conditions per place. [2024-06-27 19:18:29,750 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 66 selfloop transitions, 33 changer transitions 0/101 dead transitions. [2024-06-27 19:18:29,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 101 transitions, 1100 flow [2024-06-27 19:18:29,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:18:29,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:18:29,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-27 19:18:29,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-27 19:18:29,751 INFO L175 Difference]: Start difference. First operand has 100 places, 83 transitions, 743 flow. Second operand 8 states and 92 transitions. [2024-06-27 19:18:29,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 101 transitions, 1100 flow [2024-06-27 19:18:29,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 101 transitions, 1029 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-27 19:18:29,769 INFO L231 Difference]: Finished difference. Result has 102 places, 87 transitions, 808 flow [2024-06-27 19:18:29,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=672, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=808, PETRI_PLACES=102, PETRI_TRANSITIONS=87} [2024-06-27 19:18:29,770 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 72 predicate places. [2024-06-27 19:18:29,770 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 87 transitions, 808 flow [2024-06-27 19:18:29,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:29,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:29,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:29,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 19:18:29,771 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:18:29,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:29,771 INFO L85 PathProgramCache]: Analyzing trace with hash -2020582703, now seen corresponding path program 1 times [2024-06-27 19:18:29,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:29,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101029252] [2024-06-27 19:18:29,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:29,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:29,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:30,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:30,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:30,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101029252] [2024-06-27 19:18:30,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101029252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:30,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:30,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:18:30,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343505231] [2024-06-27 19:18:30,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:30,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:18:30,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:30,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:18:30,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:18:30,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:18:30,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 87 transitions, 808 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:30,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:30,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:18:30,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:31,230 INFO L124 PetriNetUnfolderBase]: 274/488 cut-off events. [2024-06-27 19:18:31,231 INFO L125 PetriNetUnfolderBase]: For 13642/13642 co-relation queries the response was YES. [2024-06-27 19:18:31,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3117 conditions, 488 events. 274/488 cut-off events. For 13642/13642 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1874 event pairs, 51 based on Foata normal form. 3/489 useless extension candidates. Maximal degree in co-relation 3065. Up to 396 conditions per place. [2024-06-27 19:18:31,235 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 75 selfloop transitions, 27 changer transitions 0/104 dead transitions. [2024-06-27 19:18:31,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 104 transitions, 1101 flow [2024-06-27 19:18:31,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:18:31,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:18:31,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-27 19:18:31,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36200716845878134 [2024-06-27 19:18:31,237 INFO L175 Difference]: Start difference. First operand has 102 places, 87 transitions, 808 flow. Second operand 9 states and 101 transitions. [2024-06-27 19:18:31,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 104 transitions, 1101 flow [2024-06-27 19:18:31,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 104 transitions, 1043 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-27 19:18:31,256 INFO L231 Difference]: Finished difference. Result has 107 places, 90 transitions, 858 flow [2024-06-27 19:18:31,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=858, PETRI_PLACES=107, PETRI_TRANSITIONS=90} [2024-06-27 19:18:31,256 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 77 predicate places. [2024-06-27 19:18:31,258 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 90 transitions, 858 flow [2024-06-27 19:18:31,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:31,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:31,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:31,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 19:18:31,258 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:18:31,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:31,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1546245701, now seen corresponding path program 3 times [2024-06-27 19:18:31,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:31,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784059087] [2024-06-27 19:18:31,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:31,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:31,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:31,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:31,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:31,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784059087] [2024-06-27 19:18:31,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784059087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:31,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:31,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:18:31,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091896499] [2024-06-27 19:18:31,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:31,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:18:31,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:31,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:18:31,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:18:31,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:18:31,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 90 transitions, 858 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:31,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:31,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:18:31,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:32,114 INFO L124 PetriNetUnfolderBase]: 270/482 cut-off events. [2024-06-27 19:18:32,115 INFO L125 PetriNetUnfolderBase]: For 13138/13138 co-relation queries the response was YES. [2024-06-27 19:18:32,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3121 conditions, 482 events. 270/482 cut-off events. For 13138/13138 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1843 event pairs, 52 based on Foata normal form. 2/482 useless extension candidates. Maximal degree in co-relation 3067. Up to 407 conditions per place. [2024-06-27 19:18:32,119 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 80 selfloop transitions, 23 changer transitions 0/105 dead transitions. [2024-06-27 19:18:32,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 105 transitions, 1114 flow [2024-06-27 19:18:32,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:18:32,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:18:32,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-27 19:18:32,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-27 19:18:32,121 INFO L175 Difference]: Start difference. First operand has 107 places, 90 transitions, 858 flow. Second operand 8 states and 92 transitions. [2024-06-27 19:18:32,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 105 transitions, 1114 flow [2024-06-27 19:18:32,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 105 transitions, 1018 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-27 19:18:32,149 INFO L231 Difference]: Finished difference. Result has 108 places, 90 transitions, 813 flow [2024-06-27 19:18:32,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=813, PETRI_PLACES=108, PETRI_TRANSITIONS=90} [2024-06-27 19:18:32,150 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 78 predicate places. [2024-06-27 19:18:32,150 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 90 transitions, 813 flow [2024-06-27 19:18:32,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:32,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:32,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:32,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 19:18:32,151 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:18:32,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:32,151 INFO L85 PathProgramCache]: Analyzing trace with hash -17918887, now seen corresponding path program 4 times [2024-06-27 19:18:32,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:32,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137049286] [2024-06-27 19:18:32,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:32,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:32,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:32,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:32,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:32,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137049286] [2024-06-27 19:18:32,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137049286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:32,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:32,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:18:32,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884449750] [2024-06-27 19:18:32,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:32,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:18:32,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:32,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:18:32,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:18:32,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:18:32,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 90 transitions, 813 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:32,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:32,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:18:32,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:33,159 INFO L124 PetriNetUnfolderBase]: 286/509 cut-off events. [2024-06-27 19:18:33,161 INFO L125 PetriNetUnfolderBase]: For 15275/15278 co-relation queries the response was YES. [2024-06-27 19:18:33,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3332 conditions, 509 events. 286/509 cut-off events. For 15275/15278 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1992 event pairs, 58 based on Foata normal form. 2/508 useless extension candidates. Maximal degree in co-relation 3277. Up to 383 conditions per place. [2024-06-27 19:18:33,165 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 71 selfloop transitions, 33 changer transitions 0/106 dead transitions. [2024-06-27 19:18:33,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 106 transitions, 1193 flow [2024-06-27 19:18:33,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:18:33,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:18:33,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-27 19:18:33,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-27 19:18:33,166 INFO L175 Difference]: Start difference. First operand has 108 places, 90 transitions, 813 flow. Second operand 8 states and 92 transitions. [2024-06-27 19:18:33,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 106 transitions, 1193 flow [2024-06-27 19:18:33,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 106 transitions, 1123 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-27 19:18:33,192 INFO L231 Difference]: Finished difference. Result has 109 places, 94 transitions, 890 flow [2024-06-27 19:18:33,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=743, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=890, PETRI_PLACES=109, PETRI_TRANSITIONS=94} [2024-06-27 19:18:33,193 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 79 predicate places. [2024-06-27 19:18:33,193 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 94 transitions, 890 flow [2024-06-27 19:18:33,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:33,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:33,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:33,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 19:18:33,194 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:18:33,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:33,194 INFO L85 PathProgramCache]: Analyzing trace with hash -245819789, now seen corresponding path program 2 times [2024-06-27 19:18:33,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:33,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843798093] [2024-06-27 19:18:33,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:33,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:33,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:34,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:34,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:34,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843798093] [2024-06-27 19:18:34,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843798093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:34,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:34,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:18:34,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58665036] [2024-06-27 19:18:34,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:34,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:18:34,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:34,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:18:34,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:18:34,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:18:34,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 94 transitions, 890 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:34,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:34,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:18:34,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:34,666 INFO L124 PetriNetUnfolderBase]: 289/514 cut-off events. [2024-06-27 19:18:34,666 INFO L125 PetriNetUnfolderBase]: For 15988/15991 co-relation queries the response was YES. [2024-06-27 19:18:34,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3419 conditions, 514 events. 289/514 cut-off events. For 15988/15991 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1996 event pairs, 64 based on Foata normal form. 1/512 useless extension candidates. Maximal degree in co-relation 3363. Up to 443 conditions per place. [2024-06-27 19:18:34,669 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 78 selfloop transitions, 24 changer transitions 0/104 dead transitions. [2024-06-27 19:18:34,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 104 transitions, 1140 flow [2024-06-27 19:18:34,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:18:34,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:18:34,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-27 19:18:34,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33691756272401435 [2024-06-27 19:18:34,678 INFO L175 Difference]: Start difference. First operand has 109 places, 94 transitions, 890 flow. Second operand 9 states and 94 transitions. [2024-06-27 19:18:34,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 104 transitions, 1140 flow [2024-06-27 19:18:34,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 104 transitions, 1065 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-27 19:18:34,705 INFO L231 Difference]: Finished difference. Result has 114 places, 96 transitions, 900 flow [2024-06-27 19:18:34,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=815, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=900, PETRI_PLACES=114, PETRI_TRANSITIONS=96} [2024-06-27 19:18:34,706 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 84 predicate places. [2024-06-27 19:18:34,706 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 96 transitions, 900 flow [2024-06-27 19:18:34,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:34,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:34,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:34,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 19:18:34,707 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:18:34,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:34,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1179856323, now seen corresponding path program 3 times [2024-06-27 19:18:34,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:34,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034121063] [2024-06-27 19:18:34,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:34,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:34,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:35,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:35,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:35,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034121063] [2024-06-27 19:18:35,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034121063] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:35,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:35,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:18:35,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678137063] [2024-06-27 19:18:35,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:35,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:18:35,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:35,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:18:35,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:18:35,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:18:35,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 96 transitions, 900 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:35,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:35,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:18:35,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:36,272 INFO L124 PetriNetUnfolderBase]: 292/519 cut-off events. [2024-06-27 19:18:36,272 INFO L125 PetriNetUnfolderBase]: For 16760/16763 co-relation queries the response was YES. [2024-06-27 19:18:36,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3493 conditions, 519 events. 292/519 cut-off events. For 16760/16763 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2033 event pairs, 60 based on Foata normal form. 1/517 useless extension candidates. Maximal degree in co-relation 3435. Up to 430 conditions per place. [2024-06-27 19:18:36,275 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 73 selfloop transitions, 32 changer transitions 0/107 dead transitions. [2024-06-27 19:18:36,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 107 transitions, 1166 flow [2024-06-27 19:18:36,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:18:36,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:18:36,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-27 19:18:36,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-27 19:18:36,276 INFO L175 Difference]: Start difference. First operand has 114 places, 96 transitions, 900 flow. Second operand 9 states and 97 transitions. [2024-06-27 19:18:36,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 107 transitions, 1166 flow [2024-06-27 19:18:36,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 107 transitions, 1097 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 19:18:36,305 INFO L231 Difference]: Finished difference. Result has 116 places, 98 transitions, 936 flow [2024-06-27 19:18:36,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=831, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=936, PETRI_PLACES=116, PETRI_TRANSITIONS=98} [2024-06-27 19:18:36,305 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 86 predicate places. [2024-06-27 19:18:36,305 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 98 transitions, 936 flow [2024-06-27 19:18:36,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:36,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:36,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:36,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 19:18:36,306 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:18:36,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:36,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1401494605, now seen corresponding path program 5 times [2024-06-27 19:18:36,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:36,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257254287] [2024-06-27 19:18:36,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:36,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:36,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:36,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:36,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:36,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257254287] [2024-06-27 19:18:36,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257254287] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:36,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:36,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:18:36,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678322992] [2024-06-27 19:18:36,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:36,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:18:36,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:36,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:18:36,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:18:36,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:18:36,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 98 transitions, 936 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:36,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:36,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:18:36,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:37,219 INFO L124 PetriNetUnfolderBase]: 293/521 cut-off events. [2024-06-27 19:18:37,219 INFO L125 PetriNetUnfolderBase]: For 17954/17957 co-relation queries the response was YES. [2024-06-27 19:18:37,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3557 conditions, 521 events. 293/521 cut-off events. For 17954/17957 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2062 event pairs, 64 based on Foata normal form. 2/520 useless extension candidates. Maximal degree in co-relation 3498. Up to 337 conditions per place. [2024-06-27 19:18:37,222 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 67 selfloop transitions, 45 changer transitions 0/114 dead transitions. [2024-06-27 19:18:37,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 114 transitions, 1406 flow [2024-06-27 19:18:37,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:18:37,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:18:37,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-27 19:18:37,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-27 19:18:37,223 INFO L175 Difference]: Start difference. First operand has 116 places, 98 transitions, 936 flow. Second operand 8 states and 93 transitions. [2024-06-27 19:18:37,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 114 transitions, 1406 flow [2024-06-27 19:18:37,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 114 transitions, 1295 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-27 19:18:37,240 INFO L231 Difference]: Finished difference. Result has 117 places, 102 transitions, 1004 flow [2024-06-27 19:18:37,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=825, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1004, PETRI_PLACES=117, PETRI_TRANSITIONS=102} [2024-06-27 19:18:37,241 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 87 predicate places. [2024-06-27 19:18:37,241 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 102 transitions, 1004 flow [2024-06-27 19:18:37,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:37,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:37,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:37,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 19:18:37,242 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:18:37,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:37,242 INFO L85 PathProgramCache]: Analyzing trace with hash -9644429, now seen corresponding path program 4 times [2024-06-27 19:18:37,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:37,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950243940] [2024-06-27 19:18:37,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:37,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:37,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:38,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:38,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:38,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950243940] [2024-06-27 19:18:38,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950243940] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:38,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:38,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:18:38,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390348250] [2024-06-27 19:18:38,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:38,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:18:38,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:38,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:18:38,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:18:38,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:18:38,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 102 transitions, 1004 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:38,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:38,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:18:38,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:38,408 INFO L124 PetriNetUnfolderBase]: 306/540 cut-off events. [2024-06-27 19:18:38,408 INFO L125 PetriNetUnfolderBase]: For 19716/19716 co-relation queries the response was YES. [2024-06-27 19:18:38,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3817 conditions, 540 events. 306/540 cut-off events. For 19716/19716 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2127 event pairs, 50 based on Foata normal form. 1/540 useless extension candidates. Maximal degree in co-relation 3757. Up to 496 conditions per place. [2024-06-27 19:18:38,411 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 97 selfloop transitions, 21 changer transitions 0/120 dead transitions. [2024-06-27 19:18:38,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 120 transitions, 1505 flow [2024-06-27 19:18:38,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:18:38,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:18:38,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-27 19:18:38,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33691756272401435 [2024-06-27 19:18:38,412 INFO L175 Difference]: Start difference. First operand has 117 places, 102 transitions, 1004 flow. Second operand 9 states and 94 transitions. [2024-06-27 19:18:38,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 120 transitions, 1505 flow [2024-06-27 19:18:38,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 120 transitions, 1459 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-27 19:18:38,433 INFO L231 Difference]: Finished difference. Result has 122 places, 109 transitions, 1117 flow [2024-06-27 19:18:38,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=958, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1117, PETRI_PLACES=122, PETRI_TRANSITIONS=109} [2024-06-27 19:18:38,433 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 92 predicate places. [2024-06-27 19:18:38,433 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 109 transitions, 1117 flow [2024-06-27 19:18:38,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:38,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:38,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:38,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 19:18:38,434 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:18:38,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:38,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1756567627, now seen corresponding path program 5 times [2024-06-27 19:18:38,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:38,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712347349] [2024-06-27 19:18:38,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:38,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:38,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:39,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:39,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:39,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712347349] [2024-06-27 19:18:39,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712347349] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:39,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:39,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:18:39,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79313367] [2024-06-27 19:18:39,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:39,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:18:39,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:39,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:18:39,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:18:39,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:18:39,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 109 transitions, 1117 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:39,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:39,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:18:39,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:39,611 INFO L124 PetriNetUnfolderBase]: 307/542 cut-off events. [2024-06-27 19:18:39,612 INFO L125 PetriNetUnfolderBase]: For 20332/20332 co-relation queries the response was YES. [2024-06-27 19:18:39,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3836 conditions, 542 events. 307/542 cut-off events. For 20332/20332 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2139 event pairs, 50 based on Foata normal form. 2/543 useless extension candidates. Maximal degree in co-relation 3774. Up to 509 conditions per place. [2024-06-27 19:18:39,615 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 101 selfloop transitions, 18 changer transitions 0/121 dead transitions. [2024-06-27 19:18:39,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 121 transitions, 1482 flow [2024-06-27 19:18:39,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:18:39,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:18:39,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 91 transitions. [2024-06-27 19:18:39,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32616487455197135 [2024-06-27 19:18:39,617 INFO L175 Difference]: Start difference. First operand has 122 places, 109 transitions, 1117 flow. Second operand 9 states and 91 transitions. [2024-06-27 19:18:39,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 121 transitions, 1482 flow [2024-06-27 19:18:39,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 121 transitions, 1401 flow, removed 35 selfloop flow, removed 4 redundant places. [2024-06-27 19:18:39,657 INFO L231 Difference]: Finished difference. Result has 128 places, 111 transitions, 1124 flow [2024-06-27 19:18:39,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1038, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1124, PETRI_PLACES=128, PETRI_TRANSITIONS=111} [2024-06-27 19:18:39,657 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 98 predicate places. [2024-06-27 19:18:39,657 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 111 transitions, 1124 flow [2024-06-27 19:18:39,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:39,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:39,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:39,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 19:18:39,658 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:18:39,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:39,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1409775325, now seen corresponding path program 6 times [2024-06-27 19:18:39,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:39,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993700826] [2024-06-27 19:18:39,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:39,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:39,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:40,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:40,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:40,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993700826] [2024-06-27 19:18:40,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993700826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:40,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:40,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:18:40,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304608925] [2024-06-27 19:18:40,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:40,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:18:40,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:40,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:18:40,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:18:40,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:18:40,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 111 transitions, 1124 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:40,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:40,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:18:40,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:40,463 INFO L124 PetriNetUnfolderBase]: 303/536 cut-off events. [2024-06-27 19:18:40,463 INFO L125 PetriNetUnfolderBase]: For 20184/20184 co-relation queries the response was YES. [2024-06-27 19:18:40,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3717 conditions, 536 events. 303/536 cut-off events. For 20184/20184 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2129 event pairs, 50 based on Foata normal form. 2/537 useless extension candidates. Maximal degree in co-relation 3652. Up to 510 conditions per place. [2024-06-27 19:18:40,466 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 105 selfloop transitions, 13 changer transitions 0/120 dead transitions. [2024-06-27 19:18:40,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 120 transitions, 1387 flow [2024-06-27 19:18:40,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:18:40,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:18:40,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 81 transitions. [2024-06-27 19:18:40,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32661290322580644 [2024-06-27 19:18:40,468 INFO L175 Difference]: Start difference. First operand has 128 places, 111 transitions, 1124 flow. Second operand 8 states and 81 transitions. [2024-06-27 19:18:40,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 120 transitions, 1387 flow [2024-06-27 19:18:40,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 120 transitions, 1331 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 19:18:40,511 INFO L231 Difference]: Finished difference. Result has 129 places, 111 transitions, 1099 flow [2024-06-27 19:18:40,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1068, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1099, PETRI_PLACES=129, PETRI_TRANSITIONS=111} [2024-06-27 19:18:40,512 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 99 predicate places. [2024-06-27 19:18:40,512 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 111 transitions, 1099 flow [2024-06-27 19:18:40,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:40,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:40,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:40,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 19:18:40,513 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:18:40,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:40,513 INFO L85 PathProgramCache]: Analyzing trace with hash -9336847, now seen corresponding path program 1 times [2024-06-27 19:18:40,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:40,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769102479] [2024-06-27 19:18:40,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:40,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:40,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:42,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:42,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:42,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769102479] [2024-06-27 19:18:42,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769102479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:42,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:42,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:18:42,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086091591] [2024-06-27 19:18:42,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:42,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:18:42,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:42,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:18:42,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:18:42,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:18:42,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 111 transitions, 1099 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:42,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:42,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:18:42,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:42,605 INFO L124 PetriNetUnfolderBase]: 300/531 cut-off events. [2024-06-27 19:18:42,605 INFO L125 PetriNetUnfolderBase]: For 19927/19927 co-relation queries the response was YES. [2024-06-27 19:18:42,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3617 conditions, 531 events. 300/531 cut-off events. For 19927/19927 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2095 event pairs, 48 based on Foata normal form. 2/532 useless extension candidates. Maximal degree in co-relation 3551. Up to 502 conditions per place. [2024-06-27 19:18:42,609 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 105 selfloop transitions, 14 changer transitions 0/121 dead transitions. [2024-06-27 19:18:42,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 121 transitions, 1362 flow [2024-06-27 19:18:42,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:18:42,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:18:42,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 87 transitions. [2024-06-27 19:18:42,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3118279569892473 [2024-06-27 19:18:42,611 INFO L175 Difference]: Start difference. First operand has 129 places, 111 transitions, 1099 flow. Second operand 9 states and 87 transitions. [2024-06-27 19:18:42,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 121 transitions, 1362 flow [2024-06-27 19:18:42,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 121 transitions, 1327 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-27 19:18:42,652 INFO L231 Difference]: Finished difference. Result has 131 places, 111 transitions, 1096 flow [2024-06-27 19:18:42,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1064, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1096, PETRI_PLACES=131, PETRI_TRANSITIONS=111} [2024-06-27 19:18:42,652 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 101 predicate places. [2024-06-27 19:18:42,653 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 111 transitions, 1096 flow [2024-06-27 19:18:42,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:42,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:42,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:42,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 19:18:42,653 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:18:42,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:42,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1648165387, now seen corresponding path program 1 times [2024-06-27 19:18:42,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:42,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890964559] [2024-06-27 19:18:42,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:42,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:42,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:43,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:43,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:43,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890964559] [2024-06-27 19:18:43,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890964559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:43,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:43,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:18:43,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061814437] [2024-06-27 19:18:43,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:43,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:18:43,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:43,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:18:43,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:18:43,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:18:43,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 111 transitions, 1096 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:43,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:43,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:18:43,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:43,670 INFO L124 PetriNetUnfolderBase]: 304/539 cut-off events. [2024-06-27 19:18:43,670 INFO L125 PetriNetUnfolderBase]: For 20865/20865 co-relation queries the response was YES. [2024-06-27 19:18:43,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3681 conditions, 539 events. 304/539 cut-off events. For 20865/20865 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2141 event pairs, 27 based on Foata normal form. 2/540 useless extension candidates. Maximal degree in co-relation 3614. Up to 433 conditions per place. [2024-06-27 19:18:43,674 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 105 selfloop transitions, 18 changer transitions 0/125 dead transitions. [2024-06-27 19:18:43,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 125 transitions, 1389 flow [2024-06-27 19:18:43,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:18:43,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:18:43,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 85 transitions. [2024-06-27 19:18:43,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34274193548387094 [2024-06-27 19:18:43,677 INFO L175 Difference]: Start difference. First operand has 131 places, 111 transitions, 1096 flow. Second operand 8 states and 85 transitions. [2024-06-27 19:18:43,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 125 transitions, 1389 flow [2024-06-27 19:18:43,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 125 transitions, 1347 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 19:18:43,723 INFO L231 Difference]: Finished difference. Result has 131 places, 112 transitions, 1110 flow [2024-06-27 19:18:43,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1054, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1110, PETRI_PLACES=131, PETRI_TRANSITIONS=112} [2024-06-27 19:18:43,723 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 101 predicate places. [2024-06-27 19:18:43,724 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 112 transitions, 1110 flow [2024-06-27 19:18:43,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:43,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:43,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:43,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 19:18:43,724 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:18:43,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:43,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1879996559, now seen corresponding path program 2 times [2024-06-27 19:18:43,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:43,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295616968] [2024-06-27 19:18:43,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:43,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:43,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:44,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:44,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:44,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295616968] [2024-06-27 19:18:44,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295616968] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:44,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:44,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:18:44,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472157317] [2024-06-27 19:18:44,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:44,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:18:44,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:44,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:18:44,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:18:44,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:18:44,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 112 transitions, 1110 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:44,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:44,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:18:44,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:44,844 INFO L124 PetriNetUnfolderBase]: 308/547 cut-off events. [2024-06-27 19:18:44,844 INFO L125 PetriNetUnfolderBase]: For 21982/21982 co-relation queries the response was YES. [2024-06-27 19:18:44,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3752 conditions, 547 events. 308/547 cut-off events. For 21982/21982 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2200 event pairs, 47 based on Foata normal form. 2/548 useless extension candidates. Maximal degree in co-relation 3685. Up to 473 conditions per place. [2024-06-27 19:18:44,847 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 104 selfloop transitions, 19 changer transitions 0/125 dead transitions. [2024-06-27 19:18:44,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 125 transitions, 1403 flow [2024-06-27 19:18:44,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:18:44,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:18:44,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-27 19:18:44,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 19:18:44,848 INFO L175 Difference]: Start difference. First operand has 131 places, 112 transitions, 1110 flow. Second operand 8 states and 88 transitions. [2024-06-27 19:18:44,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 125 transitions, 1403 flow [2024-06-27 19:18:44,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 125 transitions, 1357 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 19:18:44,881 INFO L231 Difference]: Finished difference. Result has 133 places, 113 transitions, 1124 flow [2024-06-27 19:18:44,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1064, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1124, PETRI_PLACES=133, PETRI_TRANSITIONS=113} [2024-06-27 19:18:44,881 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 103 predicate places. [2024-06-27 19:18:44,881 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 113 transitions, 1124 flow [2024-06-27 19:18:44,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:44,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:44,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:44,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 19:18:44,882 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:18:44,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:44,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1879992839, now seen corresponding path program 3 times [2024-06-27 19:18:44,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:44,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839256840] [2024-06-27 19:18:44,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:44,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:44,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:45,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:45,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:45,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839256840] [2024-06-27 19:18:45,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839256840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:45,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:45,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:18:45,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22546011] [2024-06-27 19:18:45,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:45,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:18:45,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:45,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:18:45,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:18:45,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:18:45,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 113 transitions, 1124 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:45,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:45,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:18:45,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:45,941 INFO L124 PetriNetUnfolderBase]: 312/555 cut-off events. [2024-06-27 19:18:45,941 INFO L125 PetriNetUnfolderBase]: For 23480/23480 co-relation queries the response was YES. [2024-06-27 19:18:45,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3814 conditions, 555 events. 312/555 cut-off events. For 23480/23480 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2256 event pairs, 47 based on Foata normal form. 2/556 useless extension candidates. Maximal degree in co-relation 3746. Up to 475 conditions per place. [2024-06-27 19:18:45,944 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 101 selfloop transitions, 23 changer transitions 0/126 dead transitions. [2024-06-27 19:18:45,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 126 transitions, 1425 flow [2024-06-27 19:18:45,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:18:45,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:18:45,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-27 19:18:45,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-27 19:18:45,946 INFO L175 Difference]: Start difference. First operand has 133 places, 113 transitions, 1124 flow. Second operand 8 states and 90 transitions. [2024-06-27 19:18:45,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 126 transitions, 1425 flow [2024-06-27 19:18:45,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 126 transitions, 1375 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-27 19:18:45,978 INFO L231 Difference]: Finished difference. Result has 135 places, 114 transitions, 1145 flow [2024-06-27 19:18:45,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1074, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1145, PETRI_PLACES=135, PETRI_TRANSITIONS=114} [2024-06-27 19:18:45,978 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 105 predicate places. [2024-06-27 19:18:45,979 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 114 transitions, 1145 flow [2024-06-27 19:18:45,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:45,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:45,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:45,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 19:18:45,979 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:18:45,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:45,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1879992684, now seen corresponding path program 1 times [2024-06-27 19:18:45,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:45,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655342076] [2024-06-27 19:18:45,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:45,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:45,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:46,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:46,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:46,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655342076] [2024-06-27 19:18:46,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655342076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:46,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:46,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:18:46,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555565688] [2024-06-27 19:18:46,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:46,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:18:46,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:46,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:18:46,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:18:46,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:18:46,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 114 transitions, 1145 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:46,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:46,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:18:46,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:47,004 INFO L124 PetriNetUnfolderBase]: 310/552 cut-off events. [2024-06-27 19:18:47,004 INFO L125 PetriNetUnfolderBase]: For 23003/23003 co-relation queries the response was YES. [2024-06-27 19:18:47,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3777 conditions, 552 events. 310/552 cut-off events. For 23003/23003 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2231 event pairs, 46 based on Foata normal form. 1/552 useless extension candidates. Maximal degree in co-relation 3708. Up to 466 conditions per place. [2024-06-27 19:18:47,007 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 97 selfloop transitions, 27 changer transitions 0/126 dead transitions. [2024-06-27 19:18:47,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 126 transitions, 1432 flow [2024-06-27 19:18:47,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:18:47,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:18:47,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-27 19:18:47,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-27 19:18:47,008 INFO L175 Difference]: Start difference. First operand has 135 places, 114 transitions, 1145 flow. Second operand 8 states and 92 transitions. [2024-06-27 19:18:47,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 126 transitions, 1432 flow [2024-06-27 19:18:47,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 126 transitions, 1367 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-27 19:18:47,049 INFO L231 Difference]: Finished difference. Result has 137 places, 114 transitions, 1143 flow [2024-06-27 19:18:47,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1080, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1143, PETRI_PLACES=137, PETRI_TRANSITIONS=114} [2024-06-27 19:18:47,050 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 107 predicate places. [2024-06-27 19:18:47,050 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 114 transitions, 1143 flow [2024-06-27 19:18:47,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:47,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:47,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:47,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 19:18:47,051 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:18:47,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:47,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1780721521, now seen corresponding path program 4 times [2024-06-27 19:18:47,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:47,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912811510] [2024-06-27 19:18:47,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:47,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:47,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:47,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:47,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:47,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912811510] [2024-06-27 19:18:47,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912811510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:47,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:47,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:18:47,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2387083] [2024-06-27 19:18:47,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:47,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:18:47,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:47,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:18:47,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:18:47,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:18:47,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 114 transitions, 1143 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:47,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:47,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:18:47,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:48,254 INFO L124 PetriNetUnfolderBase]: 314/560 cut-off events. [2024-06-27 19:18:48,254 INFO L125 PetriNetUnfolderBase]: For 24960/24960 co-relation queries the response was YES. [2024-06-27 19:18:48,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3846 conditions, 560 events. 314/560 cut-off events. For 24960/24960 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2274 event pairs, 29 based on Foata normal form. 2/561 useless extension candidates. Maximal degree in co-relation 3776. Up to 468 conditions per place. [2024-06-27 19:18:48,258 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 107 selfloop transitions, 21 changer transitions 0/130 dead transitions. [2024-06-27 19:18:48,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 130 transitions, 1461 flow [2024-06-27 19:18:48,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:18:48,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:18:48,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-27 19:18:48,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36693548387096775 [2024-06-27 19:18:48,259 INFO L175 Difference]: Start difference. First operand has 137 places, 114 transitions, 1143 flow. Second operand 8 states and 91 transitions. [2024-06-27 19:18:48,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 130 transitions, 1461 flow [2024-06-27 19:18:48,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 130 transitions, 1388 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 19:18:48,301 INFO L231 Difference]: Finished difference. Result has 138 places, 115 transitions, 1138 flow [2024-06-27 19:18:48,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1070, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1138, PETRI_PLACES=138, PETRI_TRANSITIONS=115} [2024-06-27 19:18:48,301 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 108 predicate places. [2024-06-27 19:18:48,302 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 115 transitions, 1138 flow [2024-06-27 19:18:48,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:48,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:48,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:48,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 19:18:48,303 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:18:48,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:48,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1780725241, now seen corresponding path program 5 times [2024-06-27 19:18:48,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:48,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717150668] [2024-06-27 19:18:48,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:48,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:48,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:49,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:49,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:49,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717150668] [2024-06-27 19:18:49,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717150668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:49,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:49,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:18:49,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882648585] [2024-06-27 19:18:49,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:49,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:18:49,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:49,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:18:49,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:18:49,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:18:49,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 115 transitions, 1138 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:49,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:49,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:18:49,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:49,540 INFO L124 PetriNetUnfolderBase]: 318/568 cut-off events. [2024-06-27 19:18:49,540 INFO L125 PetriNetUnfolderBase]: For 26362/26362 co-relation queries the response was YES. [2024-06-27 19:18:49,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3918 conditions, 568 events. 318/568 cut-off events. For 26362/26362 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2329 event pairs, 48 based on Foata normal form. 2/569 useless extension candidates. Maximal degree in co-relation 3847. Up to 491 conditions per place. [2024-06-27 19:18:49,543 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 106 selfloop transitions, 23 changer transitions 0/131 dead transitions. [2024-06-27 19:18:49,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 131 transitions, 1464 flow [2024-06-27 19:18:49,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:18:49,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:18:49,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-27 19:18:49,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-27 19:18:49,544 INFO L175 Difference]: Start difference. First operand has 138 places, 115 transitions, 1138 flow. Second operand 8 states and 92 transitions. [2024-06-27 19:18:49,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 131 transitions, 1464 flow [2024-06-27 19:18:49,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 131 transitions, 1406 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 19:18:49,592 INFO L231 Difference]: Finished difference. Result has 140 places, 116 transitions, 1155 flow [2024-06-27 19:18:49,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1080, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1155, PETRI_PLACES=140, PETRI_TRANSITIONS=116} [2024-06-27 19:18:49,593 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 110 predicate places. [2024-06-27 19:18:49,593 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 116 transitions, 1155 flow [2024-06-27 19:18:49,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:49,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:49,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:49,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 19:18:49,593 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:18:49,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:49,594 INFO L85 PathProgramCache]: Analyzing trace with hash -534311182, now seen corresponding path program 2 times [2024-06-27 19:18:49,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:49,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108676044] [2024-06-27 19:18:49,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:49,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:49,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:50,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:50,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:50,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108676044] [2024-06-27 19:18:50,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108676044] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:50,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:50,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:18:50,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467057657] [2024-06-27 19:18:50,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:50,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:18:50,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:50,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:18:50,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:18:50,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:18:50,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 116 transitions, 1155 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:50,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:50,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:18:50,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:50,690 INFO L124 PetriNetUnfolderBase]: 316/565 cut-off events. [2024-06-27 19:18:50,690 INFO L125 PetriNetUnfolderBase]: For 25624/25624 co-relation queries the response was YES. [2024-06-27 19:18:50,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3856 conditions, 565 events. 316/565 cut-off events. For 25624/25624 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2326 event pairs, 48 based on Foata normal form. 1/565 useless extension candidates. Maximal degree in co-relation 3784. Up to 485 conditions per place. [2024-06-27 19:18:50,694 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 103 selfloop transitions, 26 changer transitions 0/131 dead transitions. [2024-06-27 19:18:50,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 131 transitions, 1463 flow [2024-06-27 19:18:50,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:18:50,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:18:50,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-27 19:18:50,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-27 19:18:50,695 INFO L175 Difference]: Start difference. First operand has 140 places, 116 transitions, 1155 flow. Second operand 8 states and 93 transitions. [2024-06-27 19:18:50,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 131 transitions, 1463 flow [2024-06-27 19:18:50,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 131 transitions, 1396 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-27 19:18:50,743 INFO L231 Difference]: Finished difference. Result has 142 places, 116 transitions, 1148 flow [2024-06-27 19:18:50,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1088, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1148, PETRI_PLACES=142, PETRI_TRANSITIONS=116} [2024-06-27 19:18:50,743 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 112 predicate places. [2024-06-27 19:18:50,743 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 116 transitions, 1148 flow [2024-06-27 19:18:50,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:50,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:50,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:50,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 19:18:50,744 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:18:50,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:50,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1622617505, now seen corresponding path program 6 times [2024-06-27 19:18:50,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:50,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769418510] [2024-06-27 19:18:50,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:50,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:50,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:51,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:51,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:51,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769418510] [2024-06-27 19:18:51,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769418510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:51,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:51,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:18:51,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959290485] [2024-06-27 19:18:51,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:51,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:18:51,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:51,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:18:51,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:18:51,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:18:51,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 116 transitions, 1148 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:51,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:51,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:18:51,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:51,665 INFO L124 PetriNetUnfolderBase]: 320/574 cut-off events. [2024-06-27 19:18:51,665 INFO L125 PetriNetUnfolderBase]: For 27803/27803 co-relation queries the response was YES. [2024-06-27 19:18:51,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3919 conditions, 574 events. 320/574 cut-off events. For 27803/27803 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2387 event pairs, 48 based on Foata normal form. 2/574 useless extension candidates. Maximal degree in co-relation 3846. Up to 481 conditions per place. [2024-06-27 19:18:51,668 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 103 selfloop transitions, 25 changer transitions 0/130 dead transitions. [2024-06-27 19:18:51,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 130 transitions, 1469 flow [2024-06-27 19:18:51,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:18:51,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:18:51,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-27 19:18:51,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3588709677419355 [2024-06-27 19:18:51,670 INFO L175 Difference]: Start difference. First operand has 142 places, 116 transitions, 1148 flow. Second operand 8 states and 89 transitions. [2024-06-27 19:18:51,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 130 transitions, 1469 flow [2024-06-27 19:18:51,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 130 transitions, 1296 flow, removed 15 selfloop flow, removed 11 redundant places. [2024-06-27 19:18:51,719 INFO L231 Difference]: Finished difference. Result has 139 places, 117 transitions, 1055 flow [2024-06-27 19:18:51,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=975, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1055, PETRI_PLACES=139, PETRI_TRANSITIONS=117} [2024-06-27 19:18:51,720 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 109 predicate places. [2024-06-27 19:18:51,720 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 117 transitions, 1055 flow [2024-06-27 19:18:51,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:51,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:51,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:51,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 19:18:51,721 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:18:51,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:51,721 INFO L85 PathProgramCache]: Analyzing trace with hash -534161235, now seen corresponding path program 1 times [2024-06-27 19:18:51,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:51,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414144979] [2024-06-27 19:18:51,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:51,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:51,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:52,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:52,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:52,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414144979] [2024-06-27 19:18:52,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414144979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:52,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:52,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:18:52,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713451206] [2024-06-27 19:18:52,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:52,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:18:52,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:52,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:18:52,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:18:52,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:18:52,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 117 transitions, 1055 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:52,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:52,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:18:52,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:52,988 INFO L124 PetriNetUnfolderBase]: 346/620 cut-off events. [2024-06-27 19:18:52,988 INFO L125 PetriNetUnfolderBase]: For 26907/26907 co-relation queries the response was YES. [2024-06-27 19:18:52,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3977 conditions, 620 events. 346/620 cut-off events. For 26907/26907 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2611 event pairs, 58 based on Foata normal form. 1/617 useless extension candidates. Maximal degree in co-relation 3907. Up to 525 conditions per place. [2024-06-27 19:18:52,994 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 114 selfloop transitions, 28 changer transitions 0/144 dead transitions. [2024-06-27 19:18:52,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 144 transitions, 1523 flow [2024-06-27 19:18:52,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:18:52,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:18:52,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-27 19:18:52,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35842293906810035 [2024-06-27 19:18:52,995 INFO L175 Difference]: Start difference. First operand has 139 places, 117 transitions, 1055 flow. Second operand 9 states and 100 transitions. [2024-06-27 19:18:52,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 144 transitions, 1523 flow [2024-06-27 19:18:53,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 144 transitions, 1439 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-27 19:18:53,047 INFO L231 Difference]: Finished difference. Result has 147 places, 131 transitions, 1222 flow [2024-06-27 19:18:53,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=985, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1222, PETRI_PLACES=147, PETRI_TRANSITIONS=131} [2024-06-27 19:18:53,048 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 117 predicate places. [2024-06-27 19:18:53,048 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 131 transitions, 1222 flow [2024-06-27 19:18:53,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:53,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:53,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:53,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 19:18:53,048 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:18:53,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:53,048 INFO L85 PathProgramCache]: Analyzing trace with hash -347794375, now seen corresponding path program 2 times [2024-06-27 19:18:53,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:53,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406031808] [2024-06-27 19:18:53,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:53,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:53,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:53,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:53,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:53,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406031808] [2024-06-27 19:18:53,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406031808] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:53,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:53,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:18:53,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536366659] [2024-06-27 19:18:53,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:53,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:18:53,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:53,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:18:53,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:18:53,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:18:53,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 131 transitions, 1222 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:53,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:53,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:18:53,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:54,270 INFO L124 PetriNetUnfolderBase]: 376/670 cut-off events. [2024-06-27 19:18:54,271 INFO L125 PetriNetUnfolderBase]: For 29064/29064 co-relation queries the response was YES. [2024-06-27 19:18:54,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4361 conditions, 670 events. 376/670 cut-off events. For 29064/29064 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2902 event pairs, 49 based on Foata normal form. 2/670 useless extension candidates. Maximal degree in co-relation 4284. Up to 547 conditions per place. [2024-06-27 19:18:54,275 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 127 selfloop transitions, 33 changer transitions 0/162 dead transitions. [2024-06-27 19:18:54,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 162 transitions, 1752 flow [2024-06-27 19:18:54,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:18:54,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:18:54,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-27 19:18:54,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 19:18:54,276 INFO L175 Difference]: Start difference. First operand has 147 places, 131 transitions, 1222 flow. Second operand 10 states and 110 transitions. [2024-06-27 19:18:54,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 162 transitions, 1752 flow [2024-06-27 19:18:54,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 162 transitions, 1696 flow, removed 21 selfloop flow, removed 2 redundant places. [2024-06-27 19:18:54,330 INFO L231 Difference]: Finished difference. Result has 159 places, 144 transitions, 1429 flow [2024-06-27 19:18:54,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1184, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1429, PETRI_PLACES=159, PETRI_TRANSITIONS=144} [2024-06-27 19:18:54,331 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 129 predicate places. [2024-06-27 19:18:54,331 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 144 transitions, 1429 flow [2024-06-27 19:18:54,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:54,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:54,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:54,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 19:18:54,331 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:18:54,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:54,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1990729211, now seen corresponding path program 3 times [2024-06-27 19:18:54,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:54,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131989267] [2024-06-27 19:18:54,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:54,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:54,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:55,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:55,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:55,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131989267] [2024-06-27 19:18:55,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131989267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:55,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:55,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:18:55,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533361881] [2024-06-27 19:18:55,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:55,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:18:55,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:55,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:18:55,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:18:55,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:18:55,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 144 transitions, 1429 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:55,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:55,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:18:55,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:55,603 INFO L124 PetriNetUnfolderBase]: 389/692 cut-off events. [2024-06-27 19:18:55,603 INFO L125 PetriNetUnfolderBase]: For 30566/30566 co-relation queries the response was YES. [2024-06-27 19:18:55,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4589 conditions, 692 events. 389/692 cut-off events. For 30566/30566 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3015 event pairs, 56 based on Foata normal form. 2/692 useless extension candidates. Maximal degree in co-relation 4506. Up to 577 conditions per place. [2024-06-27 19:18:55,607 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 134 selfloop transitions, 32 changer transitions 0/168 dead transitions. [2024-06-27 19:18:55,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 168 transitions, 1900 flow [2024-06-27 19:18:55,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:18:55,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:18:55,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-27 19:18:55,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 19:18:55,609 INFO L175 Difference]: Start difference. First operand has 159 places, 144 transitions, 1429 flow. Second operand 10 states and 110 transitions. [2024-06-27 19:18:55,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 168 transitions, 1900 flow [2024-06-27 19:18:55,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 168 transitions, 1834 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-27 19:18:55,677 INFO L231 Difference]: Finished difference. Result has 169 places, 151 transitions, 1543 flow [2024-06-27 19:18:55,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1364, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1543, PETRI_PLACES=169, PETRI_TRANSITIONS=151} [2024-06-27 19:18:55,677 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 139 predicate places. [2024-06-27 19:18:55,677 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 151 transitions, 1543 flow [2024-06-27 19:18:55,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:55,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:55,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:55,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 19:18:55,678 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:18:55,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:55,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1985165021, now seen corresponding path program 4 times [2024-06-27 19:18:55,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:55,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263741341] [2024-06-27 19:18:55,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:55,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:55,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:56,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:56,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:56,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263741341] [2024-06-27 19:18:56,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263741341] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:56,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:56,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:18:56,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840746895] [2024-06-27 19:18:56,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:56,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:18:56,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:56,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:18:56,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:18:56,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:18:56,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 151 transitions, 1543 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:56,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:56,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:18:56,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:56,799 INFO L124 PetriNetUnfolderBase]: 416/737 cut-off events. [2024-06-27 19:18:56,799 INFO L125 PetriNetUnfolderBase]: For 33812/33812 co-relation queries the response was YES. [2024-06-27 19:18:56,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4893 conditions, 737 events. 416/737 cut-off events. For 33812/33812 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3237 event pairs, 53 based on Foata normal form. 4/739 useless extension candidates. Maximal degree in co-relation 4806. Up to 574 conditions per place. [2024-06-27 19:18:56,804 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 134 selfloop transitions, 40 changer transitions 0/176 dead transitions. [2024-06-27 19:18:56,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 176 transitions, 2028 flow [2024-06-27 19:18:56,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:18:56,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:18:56,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-27 19:18:56,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-27 19:18:56,806 INFO L175 Difference]: Start difference. First operand has 169 places, 151 transitions, 1543 flow. Second operand 10 states and 112 transitions. [2024-06-27 19:18:56,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 176 transitions, 2028 flow [2024-06-27 19:18:56,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 176 transitions, 1935 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-27 19:18:56,875 INFO L231 Difference]: Finished difference. Result has 176 places, 158 transitions, 1626 flow [2024-06-27 19:18:56,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1450, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1626, PETRI_PLACES=176, PETRI_TRANSITIONS=158} [2024-06-27 19:18:56,876 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 146 predicate places. [2024-06-27 19:18:56,876 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 158 transitions, 1626 flow [2024-06-27 19:18:56,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:56,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:56,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:56,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 19:18:56,877 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:18:56,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:56,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1985157581, now seen corresponding path program 5 times [2024-06-27 19:18:56,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:56,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067646940] [2024-06-27 19:18:56,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:56,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:56,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:57,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:57,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:57,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067646940] [2024-06-27 19:18:57,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067646940] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:57,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:57,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:18:57,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384961304] [2024-06-27 19:18:57,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:57,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:18:57,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:57,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:18:57,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:18:57,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:18:57,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 158 transitions, 1626 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:57,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:57,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:18:57,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:58,180 INFO L124 PetriNetUnfolderBase]: 431/762 cut-off events. [2024-06-27 19:18:58,181 INFO L125 PetriNetUnfolderBase]: For 33556/33556 co-relation queries the response was YES. [2024-06-27 19:18:58,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5102 conditions, 762 events. 431/762 cut-off events. For 33556/33556 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3407 event pairs, 55 based on Foata normal form. 2/762 useless extension candidates. Maximal degree in co-relation 5012. Up to 574 conditions per place. [2024-06-27 19:18:58,187 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 132 selfloop transitions, 48 changer transitions 0/182 dead transitions. [2024-06-27 19:18:58,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 182 transitions, 2138 flow [2024-06-27 19:18:58,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:18:58,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:18:58,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-27 19:18:58,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-27 19:18:58,188 INFO L175 Difference]: Start difference. First operand has 176 places, 158 transitions, 1626 flow. Second operand 10 states and 112 transitions. [2024-06-27 19:18:58,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 182 transitions, 2138 flow [2024-06-27 19:18:58,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 182 transitions, 2045 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-27 19:18:58,263 INFO L231 Difference]: Finished difference. Result has 181 places, 165 transitions, 1756 flow [2024-06-27 19:18:58,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1548, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1756, PETRI_PLACES=181, PETRI_TRANSITIONS=165} [2024-06-27 19:18:58,264 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 151 predicate places. [2024-06-27 19:18:58,264 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 165 transitions, 1756 flow [2024-06-27 19:18:58,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:58,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:58,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:58,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 19:18:58,264 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:18:58,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:58,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1985157302, now seen corresponding path program 1 times [2024-06-27 19:18:58,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:58,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672348826] [2024-06-27 19:18:58,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:58,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:58,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:59,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:59,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:59,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672348826] [2024-06-27 19:18:59,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672348826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:59,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:59,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:18:59,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484537873] [2024-06-27 19:18:59,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:59,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:18:59,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:59,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:18:59,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:18:59,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:18:59,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 165 transitions, 1756 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:59,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:59,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:18:59,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:59,767 INFO L124 PetriNetUnfolderBase]: 440/777 cut-off events. [2024-06-27 19:18:59,767 INFO L125 PetriNetUnfolderBase]: For 36361/36361 co-relation queries the response was YES. [2024-06-27 19:18:59,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5309 conditions, 777 events. 440/777 cut-off events. For 36361/36361 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3480 event pairs, 63 based on Foata normal form. 3/778 useless extension candidates. Maximal degree in co-relation 5217. Up to 642 conditions per place. [2024-06-27 19:18:59,773 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 145 selfloop transitions, 39 changer transitions 0/186 dead transitions. [2024-06-27 19:18:59,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 186 transitions, 2241 flow [2024-06-27 19:18:59,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:18:59,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:18:59,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-27 19:18:59,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-27 19:18:59,775 INFO L175 Difference]: Start difference. First operand has 181 places, 165 transitions, 1756 flow. Second operand 11 states and 122 transitions. [2024-06-27 19:18:59,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 186 transitions, 2241 flow [2024-06-27 19:18:59,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 186 transitions, 2140 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-27 19:18:59,861 INFO L231 Difference]: Finished difference. Result has 187 places, 169 transitions, 1824 flow [2024-06-27 19:18:59,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1655, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1824, PETRI_PLACES=187, PETRI_TRANSITIONS=169} [2024-06-27 19:18:59,861 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 157 predicate places. [2024-06-27 19:18:59,861 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 169 transitions, 1824 flow [2024-06-27 19:18:59,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:59,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:59,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:59,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 19:18:59,862 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:18:59,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:59,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1622832986, now seen corresponding path program 2 times [2024-06-27 19:18:59,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:59,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181358272] [2024-06-27 19:18:59,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:59,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:59,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:01,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:01,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:01,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181358272] [2024-06-27 19:19:01,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181358272] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:01,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:01,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:19:01,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003071023] [2024-06-27 19:19:01,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:01,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:19:01,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:01,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:19:01,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:19:01,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:19:01,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 169 transitions, 1824 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:01,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:01,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:19:01,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:01,438 INFO L124 PetriNetUnfolderBase]: 449/792 cut-off events. [2024-06-27 19:19:01,438 INFO L125 PetriNetUnfolderBase]: For 37475/37475 co-relation queries the response was YES. [2024-06-27 19:19:01,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5488 conditions, 792 events. 449/792 cut-off events. For 37475/37475 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3573 event pairs, 59 based on Foata normal form. 3/793 useless extension candidates. Maximal degree in co-relation 5393. Up to 615 conditions per place. [2024-06-27 19:19:01,444 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 132 selfloop transitions, 53 changer transitions 0/187 dead transitions. [2024-06-27 19:19:01,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 187 transitions, 2302 flow [2024-06-27 19:19:01,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:19:01,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:19:01,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-27 19:19:01,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-27 19:19:01,445 INFO L175 Difference]: Start difference. First operand has 187 places, 169 transitions, 1824 flow. Second operand 10 states and 111 transitions. [2024-06-27 19:19:01,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 187 transitions, 2302 flow [2024-06-27 19:19:01,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 187 transitions, 2177 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-27 19:19:01,534 INFO L231 Difference]: Finished difference. Result has 191 places, 172 transitions, 1887 flow [2024-06-27 19:19:01,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1699, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1887, PETRI_PLACES=191, PETRI_TRANSITIONS=172} [2024-06-27 19:19:01,535 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 161 predicate places. [2024-06-27 19:19:01,535 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 172 transitions, 1887 flow [2024-06-27 19:19:01,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:01,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:01,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:01,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 19:19:01,535 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:19:01,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:01,535 INFO L85 PathProgramCache]: Analyzing trace with hash -683403271, now seen corresponding path program 6 times [2024-06-27 19:19:01,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:01,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658550754] [2024-06-27 19:19:01,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:01,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:01,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:02,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:02,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:02,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658550754] [2024-06-27 19:19:02,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658550754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:02,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:02,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:19:02,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403304573] [2024-06-27 19:19:02,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:02,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:19:02,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:02,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:19:02,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:19:02,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:19:02,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 172 transitions, 1887 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:02,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:02,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:19:02,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:02,915 INFO L124 PetriNetUnfolderBase]: 465/818 cut-off events. [2024-06-27 19:19:02,915 INFO L125 PetriNetUnfolderBase]: For 40665/40665 co-relation queries the response was YES. [2024-06-27 19:19:02,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5874 conditions, 818 events. 465/818 cut-off events. For 40665/40665 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3726 event pairs, 47 based on Foata normal form. 2/818 useless extension candidates. Maximal degree in co-relation 5778. Up to 522 conditions per place. [2024-06-27 19:19:02,922 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 114 selfloop transitions, 75 changer transitions 0/191 dead transitions. [2024-06-27 19:19:02,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 191 transitions, 2509 flow [2024-06-27 19:19:02,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:19:02,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:19:02,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-27 19:19:02,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-27 19:19:02,925 INFO L175 Difference]: Start difference. First operand has 191 places, 172 transitions, 1887 flow. Second operand 9 states and 102 transitions. [2024-06-27 19:19:02,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 191 transitions, 2509 flow [2024-06-27 19:19:03,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 191 transitions, 2343 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-27 19:19:03,025 INFO L231 Difference]: Finished difference. Result has 192 places, 176 transitions, 1986 flow [2024-06-27 19:19:03,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1727, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1986, PETRI_PLACES=192, PETRI_TRANSITIONS=176} [2024-06-27 19:19:03,025 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 162 predicate places. [2024-06-27 19:19:03,025 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 176 transitions, 1986 flow [2024-06-27 19:19:03,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:03,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:03,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:03,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 19:19:03,026 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:19:03,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:03,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1786439533, now seen corresponding path program 7 times [2024-06-27 19:19:03,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:03,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771832177] [2024-06-27 19:19:03,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:03,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:03,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:03,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:03,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:03,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771832177] [2024-06-27 19:19:03,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771832177] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:03,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:03,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:19:03,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429413643] [2024-06-27 19:19:03,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:03,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:19:03,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:03,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:19:03,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:19:03,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:19:03,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 176 transitions, 1986 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:03,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:03,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:19:03,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:04,300 INFO L124 PetriNetUnfolderBase]: 471/828 cut-off events. [2024-06-27 19:19:04,300 INFO L125 PetriNetUnfolderBase]: For 41083/41083 co-relation queries the response was YES. [2024-06-27 19:19:04,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5977 conditions, 828 events. 471/828 cut-off events. For 41083/41083 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3784 event pairs, 71 based on Foata normal form. 2/826 useless extension candidates. Maximal degree in co-relation 5880. Up to 663 conditions per place. [2024-06-27 19:19:04,305 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 148 selfloop transitions, 41 changer transitions 0/191 dead transitions. [2024-06-27 19:19:04,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 191 transitions, 2454 flow [2024-06-27 19:19:04,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:19:04,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:19:04,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-27 19:19:04,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-27 19:19:04,306 INFO L175 Difference]: Start difference. First operand has 192 places, 176 transitions, 1986 flow. Second operand 10 states and 109 transitions. [2024-06-27 19:19:04,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 191 transitions, 2454 flow [2024-06-27 19:19:04,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 191 transitions, 2323 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-27 19:19:04,405 INFO L231 Difference]: Finished difference. Result has 197 places, 178 transitions, 1998 flow [2024-06-27 19:19:04,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1861, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1998, PETRI_PLACES=197, PETRI_TRANSITIONS=178} [2024-06-27 19:19:04,406 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 167 predicate places. [2024-06-27 19:19:04,406 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 178 transitions, 1998 flow [2024-06-27 19:19:04,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:04,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:04,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:04,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 19:19:04,406 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:19:04,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:04,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1786237723, now seen corresponding path program 8 times [2024-06-27 19:19:04,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:04,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095991939] [2024-06-27 19:19:04,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:04,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:04,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:05,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:05,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:05,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095991939] [2024-06-27 19:19:05,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095991939] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:05,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:05,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:19:05,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579266022] [2024-06-27 19:19:05,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:05,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:19:05,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:05,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:19:05,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:19:05,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:19:05,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 178 transitions, 1998 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:05,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:05,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:19:05,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:05,537 INFO L124 PetriNetUnfolderBase]: 472/830 cut-off events. [2024-06-27 19:19:05,537 INFO L125 PetriNetUnfolderBase]: For 40678/40678 co-relation queries the response was YES. [2024-06-27 19:19:05,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5955 conditions, 830 events. 472/830 cut-off events. For 40678/40678 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3793 event pairs, 53 based on Foata normal form. 2/830 useless extension candidates. Maximal degree in co-relation 5856. Up to 658 conditions per place. [2024-06-27 19:19:05,543 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 145 selfloop transitions, 47 changer transitions 0/194 dead transitions. [2024-06-27 19:19:05,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 194 transitions, 2472 flow [2024-06-27 19:19:05,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:19:05,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:19:05,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-27 19:19:05,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 19:19:05,544 INFO L175 Difference]: Start difference. First operand has 197 places, 178 transitions, 1998 flow. Second operand 9 states and 99 transitions. [2024-06-27 19:19:05,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 194 transitions, 2472 flow [2024-06-27 19:19:05,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 194 transitions, 2332 flow, removed 30 selfloop flow, removed 11 redundant places. [2024-06-27 19:19:05,646 INFO L231 Difference]: Finished difference. Result has 195 places, 180 transitions, 2014 flow [2024-06-27 19:19:05,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1858, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2014, PETRI_PLACES=195, PETRI_TRANSITIONS=180} [2024-06-27 19:19:05,646 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 165 predicate places. [2024-06-27 19:19:05,646 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 180 transitions, 2014 flow [2024-06-27 19:19:05,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:05,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:05,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:05,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 19:19:05,647 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:19:05,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:05,648 INFO L85 PathProgramCache]: Analyzing trace with hash 969522738, now seen corresponding path program 3 times [2024-06-27 19:19:05,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:05,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175076635] [2024-06-27 19:19:05,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:05,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:05,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:06,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:06,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:06,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175076635] [2024-06-27 19:19:06,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175076635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:06,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:06,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:19:06,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251503777] [2024-06-27 19:19:06,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:06,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:19:06,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:06,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:19:06,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:19:06,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:19:06,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 180 transitions, 2014 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:06,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:06,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:19:06,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:07,209 INFO L124 PetriNetUnfolderBase]: 475/835 cut-off events. [2024-06-27 19:19:07,209 INFO L125 PetriNetUnfolderBase]: For 40626/40626 co-relation queries the response was YES. [2024-06-27 19:19:07,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5954 conditions, 835 events. 475/835 cut-off events. For 40626/40626 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3808 event pairs, 81 based on Foata normal form. 1/832 useless extension candidates. Maximal degree in co-relation 5860. Up to 730 conditions per place. [2024-06-27 19:19:07,218 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 157 selfloop transitions, 32 changer transitions 0/191 dead transitions. [2024-06-27 19:19:07,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 191 transitions, 2450 flow [2024-06-27 19:19:07,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:19:07,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:19:07,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-27 19:19:07,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32903225806451614 [2024-06-27 19:19:07,219 INFO L175 Difference]: Start difference. First operand has 195 places, 180 transitions, 2014 flow. Second operand 10 states and 102 transitions. [2024-06-27 19:19:07,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 191 transitions, 2450 flow [2024-06-27 19:19:07,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 191 transitions, 2326 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-27 19:19:07,321 INFO L231 Difference]: Finished difference. Result has 198 places, 182 transitions, 2001 flow [2024-06-27 19:19:07,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1890, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2001, PETRI_PLACES=198, PETRI_TRANSITIONS=182} [2024-06-27 19:19:07,322 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 168 predicate places. [2024-06-27 19:19:07,322 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 182 transitions, 2001 flow [2024-06-27 19:19:07,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:07,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:07,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:07,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 19:19:07,323 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:19:07,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:07,323 INFO L85 PathProgramCache]: Analyzing trace with hash 496870619, now seen corresponding path program 9 times [2024-06-27 19:19:07,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:07,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630793477] [2024-06-27 19:19:07,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:07,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:07,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:08,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:08,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:08,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630793477] [2024-06-27 19:19:08,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630793477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:08,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:08,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:19:08,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277546342] [2024-06-27 19:19:08,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:08,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:19:08,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:08,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:19:08,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:19:08,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:19:08,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 182 transitions, 2001 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:08,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:08,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:19:08,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:09,208 INFO L124 PetriNetUnfolderBase]: 529/923 cut-off events. [2024-06-27 19:19:09,208 INFO L125 PetriNetUnfolderBase]: For 58406/58406 co-relation queries the response was YES. [2024-06-27 19:19:09,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6986 conditions, 923 events. 529/923 cut-off events. For 58406/58406 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4300 event pairs, 91 based on Foata normal form. 4/923 useless extension candidates. Maximal degree in co-relation 6891. Up to 367 conditions per place. [2024-06-27 19:19:09,215 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 130 selfloop transitions, 79 changer transitions 0/211 dead transitions. [2024-06-27 19:19:09,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 211 transitions, 3059 flow [2024-06-27 19:19:09,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:19:09,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:19:09,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-27 19:19:09,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4014336917562724 [2024-06-27 19:19:09,216 INFO L175 Difference]: Start difference. First operand has 198 places, 182 transitions, 2001 flow. Second operand 9 states and 112 transitions. [2024-06-27 19:19:09,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 211 transitions, 3059 flow [2024-06-27 19:19:09,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 211 transitions, 2964 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-27 19:19:09,328 INFO L231 Difference]: Finished difference. Result has 201 places, 192 transitions, 2312 flow [2024-06-27 19:19:09,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1906, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2312, PETRI_PLACES=201, PETRI_TRANSITIONS=192} [2024-06-27 19:19:09,328 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 171 predicate places. [2024-06-27 19:19:09,329 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 192 transitions, 2312 flow [2024-06-27 19:19:09,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:09,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:09,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:09,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 19:19:09,329 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:19:09,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:09,329 INFO L85 PathProgramCache]: Analyzing trace with hash -555476204, now seen corresponding path program 4 times [2024-06-27 19:19:09,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:09,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894411874] [2024-06-27 19:19:09,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:09,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:09,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:10,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:10,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:10,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894411874] [2024-06-27 19:19:10,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894411874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:10,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:10,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:19:10,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196661120] [2024-06-27 19:19:10,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:10,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:19:10,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:10,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:19:10,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:19:10,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:19:10,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 192 transitions, 2312 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:10,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:10,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:19:10,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:10,657 INFO L124 PetriNetUnfolderBase]: 525/916 cut-off events. [2024-06-27 19:19:10,657 INFO L125 PetriNetUnfolderBase]: For 55065/55065 co-relation queries the response was YES. [2024-06-27 19:19:10,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7133 conditions, 916 events. 525/916 cut-off events. For 55065/55065 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4237 event pairs, 81 based on Foata normal form. 1/913 useless extension candidates. Maximal degree in co-relation 7035. Up to 784 conditions per place. [2024-06-27 19:19:10,667 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 158 selfloop transitions, 43 changer transitions 0/203 dead transitions. [2024-06-27 19:19:10,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 203 transitions, 2751 flow [2024-06-27 19:19:10,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:19:10,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:19:10,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-27 19:19:10,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-27 19:19:10,669 INFO L175 Difference]: Start difference. First operand has 201 places, 192 transitions, 2312 flow. Second operand 10 states and 105 transitions. [2024-06-27 19:19:10,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 203 transitions, 2751 flow [2024-06-27 19:19:10,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 203 transitions, 2694 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-27 19:19:10,828 INFO L231 Difference]: Finished difference. Result has 208 places, 193 transitions, 2361 flow [2024-06-27 19:19:10,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2255, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2361, PETRI_PLACES=208, PETRI_TRANSITIONS=193} [2024-06-27 19:19:10,828 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 178 predicate places. [2024-06-27 19:19:10,828 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 193 transitions, 2361 flow [2024-06-27 19:19:10,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:10,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:10,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:10,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 19:19:10,829 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:19:10,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:10,830 INFO L85 PathProgramCache]: Analyzing trace with hash 496863179, now seen corresponding path program 10 times [2024-06-27 19:19:10,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:10,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958871547] [2024-06-27 19:19:10,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:10,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:10,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:11,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:11,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:11,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958871547] [2024-06-27 19:19:11,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958871547] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:11,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:11,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:19:11,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512768805] [2024-06-27 19:19:11,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:11,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:19:11,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:11,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:19:11,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:19:11,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:19:11,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 193 transitions, 2361 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:11,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:11,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:19:11,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:12,163 INFO L124 PetriNetUnfolderBase]: 531/926 cut-off events. [2024-06-27 19:19:12,164 INFO L125 PetriNetUnfolderBase]: For 59077/59077 co-relation queries the response was YES. [2024-06-27 19:19:12,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7281 conditions, 926 events. 531/926 cut-off events. For 59077/59077 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4328 event pairs, 87 based on Foata normal form. 2/924 useless extension candidates. Maximal degree in co-relation 7181. Up to 381 conditions per place. [2024-06-27 19:19:12,171 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 129 selfloop transitions, 85 changer transitions 0/216 dead transitions. [2024-06-27 19:19:12,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 216 transitions, 3328 flow [2024-06-27 19:19:12,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:19:12,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:19:12,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-27 19:19:12,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-27 19:19:12,172 INFO L175 Difference]: Start difference. First operand has 208 places, 193 transitions, 2361 flow. Second operand 9 states and 111 transitions. [2024-06-27 19:19:12,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 216 transitions, 3328 flow [2024-06-27 19:19:12,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 216 transitions, 3209 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 19:19:12,295 INFO L231 Difference]: Finished difference. Result has 209 places, 200 transitions, 2580 flow [2024-06-27 19:19:12,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2242, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2580, PETRI_PLACES=209, PETRI_TRANSITIONS=200} [2024-06-27 19:19:12,295 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 179 predicate places. [2024-06-27 19:19:12,295 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 200 transitions, 2580 flow [2024-06-27 19:19:12,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:12,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:12,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:12,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 19:19:12,296 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:19:12,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:12,297 INFO L85 PathProgramCache]: Analyzing trace with hash -289779203, now seen corresponding path program 11 times [2024-06-27 19:19:12,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:12,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333733609] [2024-06-27 19:19:12,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:12,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:12,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:13,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:13,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:13,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333733609] [2024-06-27 19:19:13,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333733609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:13,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:13,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:19:13,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572326307] [2024-06-27 19:19:13,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:13,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:19:13,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:13,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:19:13,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:19:13,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:19:13,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 200 transitions, 2580 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:13,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:13,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:19:13,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:13,595 INFO L124 PetriNetUnfolderBase]: 533/929 cut-off events. [2024-06-27 19:19:13,596 INFO L125 PetriNetUnfolderBase]: For 60162/60162 co-relation queries the response was YES. [2024-06-27 19:19:13,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7340 conditions, 929 events. 533/929 cut-off events. For 60162/60162 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4318 event pairs, 164 based on Foata normal form. 4/932 useless extension candidates. Maximal degree in co-relation 7239. Up to 868 conditions per place. [2024-06-27 19:19:13,605 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 190 selfloop transitions, 22 changer transitions 0/214 dead transitions. [2024-06-27 19:19:13,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 214 transitions, 3203 flow [2024-06-27 19:19:13,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:19:13,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:19:13,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-27 19:19:13,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-27 19:19:13,606 INFO L175 Difference]: Start difference. First operand has 209 places, 200 transitions, 2580 flow. Second operand 9 states and 96 transitions. [2024-06-27 19:19:13,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 214 transitions, 3203 flow [2024-06-27 19:19:13,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 214 transitions, 3033 flow, removed 63 selfloop flow, removed 4 redundant places. [2024-06-27 19:19:13,735 INFO L231 Difference]: Finished difference. Result has 215 places, 202 transitions, 2521 flow [2024-06-27 19:19:13,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2410, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2521, PETRI_PLACES=215, PETRI_TRANSITIONS=202} [2024-06-27 19:19:13,736 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 185 predicate places. [2024-06-27 19:19:13,736 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 202 transitions, 2521 flow [2024-06-27 19:19:13,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:13,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:13,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:13,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 19:19:13,736 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:19:13,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:13,737 INFO L85 PathProgramCache]: Analyzing trace with hash -555691685, now seen corresponding path program 7 times [2024-06-27 19:19:13,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:13,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671463116] [2024-06-27 19:19:13,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:13,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:13,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:14,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:14,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:14,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671463116] [2024-06-27 19:19:14,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671463116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:14,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:14,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:19:14,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234512580] [2024-06-27 19:19:14,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:14,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:19:14,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:14,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:19:14,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:19:14,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:19:14,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 202 transitions, 2521 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:14,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:14,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:19:14,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:14,664 INFO L124 PetriNetUnfolderBase]: 530/925 cut-off events. [2024-06-27 19:19:14,664 INFO L125 PetriNetUnfolderBase]: For 55161/55161 co-relation queries the response was YES. [2024-06-27 19:19:14,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7052 conditions, 925 events. 530/925 cut-off events. For 55161/55161 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4332 event pairs, 68 based on Foata normal form. 2/923 useless extension candidates. Maximal degree in co-relation 6949. Up to 761 conditions per place. [2024-06-27 19:19:14,672 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 172 selfloop transitions, 38 changer transitions 0/212 dead transitions. [2024-06-27 19:19:14,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 212 transitions, 2967 flow [2024-06-27 19:19:14,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:19:14,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:19:14,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-27 19:19:14,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35080645161290325 [2024-06-27 19:19:14,673 INFO L175 Difference]: Start difference. First operand has 215 places, 202 transitions, 2521 flow. Second operand 8 states and 87 transitions. [2024-06-27 19:19:14,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 212 transitions, 2967 flow [2024-06-27 19:19:14,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 212 transitions, 2893 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-27 19:19:14,810 INFO L231 Difference]: Finished difference. Result has 216 places, 202 transitions, 2527 flow [2024-06-27 19:19:14,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2447, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2527, PETRI_PLACES=216, PETRI_TRANSITIONS=202} [2024-06-27 19:19:14,811 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 186 predicate places. [2024-06-27 19:19:14,811 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 202 transitions, 2527 flow [2024-06-27 19:19:14,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:14,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:14,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:14,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 19:19:14,811 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:19:14,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:14,812 INFO L85 PathProgramCache]: Analyzing trace with hash -289778924, now seen corresponding path program 5 times [2024-06-27 19:19:14,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:14,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661798090] [2024-06-27 19:19:14,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:14,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:14,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:15,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:15,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:15,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661798090] [2024-06-27 19:19:15,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661798090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:15,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:15,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:19:15,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292630070] [2024-06-27 19:19:15,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:15,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:19:15,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:15,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:19:15,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:19:15,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:19:15,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 202 transitions, 2527 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:15,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:15,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:19:15,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:16,040 INFO L124 PetriNetUnfolderBase]: 528/921 cut-off events. [2024-06-27 19:19:16,040 INFO L125 PetriNetUnfolderBase]: For 53060/53060 co-relation queries the response was YES. [2024-06-27 19:19:16,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7001 conditions, 921 events. 528/921 cut-off events. For 53060/53060 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4273 event pairs, 167 based on Foata normal form. 1/921 useless extension candidates. Maximal degree in co-relation 6897. Up to 887 conditions per place. [2024-06-27 19:19:16,048 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 190 selfloop transitions, 19 changer transitions 0/211 dead transitions. [2024-06-27 19:19:16,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 211 transitions, 2972 flow [2024-06-27 19:19:16,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:19:16,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:19:16,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-06-27 19:19:16,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-27 19:19:16,049 INFO L175 Difference]: Start difference. First operand has 216 places, 202 transitions, 2527 flow. Second operand 9 states and 90 transitions. [2024-06-27 19:19:16,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 211 transitions, 2972 flow [2024-06-27 19:19:16,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 211 transitions, 2821 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-27 19:19:16,190 INFO L231 Difference]: Finished difference. Result has 218 places, 202 transitions, 2423 flow [2024-06-27 19:19:16,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2376, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2423, PETRI_PLACES=218, PETRI_TRANSITIONS=202} [2024-06-27 19:19:16,191 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 188 predicate places. [2024-06-27 19:19:16,191 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 202 transitions, 2423 flow [2024-06-27 19:19:16,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:16,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:16,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:16,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 19:19:16,191 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:19:16,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:16,191 INFO L85 PathProgramCache]: Analyzing trace with hash 753363689, now seen corresponding path program 12 times [2024-06-27 19:19:16,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:16,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179510358] [2024-06-27 19:19:16,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:16,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:16,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:16,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:16,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:16,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179510358] [2024-06-27 19:19:16,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179510358] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:16,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:16,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:19:16,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392421948] [2024-06-27 19:19:16,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:16,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:19:16,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:16,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:19:16,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:19:16,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:19:16,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 202 transitions, 2423 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:16,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:16,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:19:16,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:17,197 INFO L124 PetriNetUnfolderBase]: 555/965 cut-off events. [2024-06-27 19:19:17,197 INFO L125 PetriNetUnfolderBase]: For 65875/65875 co-relation queries the response was YES. [2024-06-27 19:19:17,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7465 conditions, 965 events. 555/965 cut-off events. For 65875/65875 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4523 event pairs, 167 based on Foata normal form. 4/968 useless extension candidates. Maximal degree in co-relation 7360. Up to 849 conditions per place. [2024-06-27 19:19:17,205 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 189 selfloop transitions, 30 changer transitions 0/221 dead transitions. [2024-06-27 19:19:17,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 221 transitions, 3170 flow [2024-06-27 19:19:17,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:19:17,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:19:17,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-27 19:19:17,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36200716845878134 [2024-06-27 19:19:17,207 INFO L175 Difference]: Start difference. First operand has 218 places, 202 transitions, 2423 flow. Second operand 9 states and 101 transitions. [2024-06-27 19:19:17,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 221 transitions, 3170 flow [2024-06-27 19:19:17,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 221 transitions, 3091 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-27 19:19:17,359 INFO L231 Difference]: Finished difference. Result has 217 places, 206 transitions, 2519 flow [2024-06-27 19:19:17,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2350, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2519, PETRI_PLACES=217, PETRI_TRANSITIONS=206} [2024-06-27 19:19:17,359 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 187 predicate places. [2024-06-27 19:19:17,359 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 206 transitions, 2519 flow [2024-06-27 19:19:17,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:17,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:17,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:17,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 19:19:17,360 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:19:17,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:17,360 INFO L85 PathProgramCache]: Analyzing trace with hash -298975694, now seen corresponding path program 6 times [2024-06-27 19:19:17,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:17,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054790263] [2024-06-27 19:19:17,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:17,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:17,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:18,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:18,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:18,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054790263] [2024-06-27 19:19:18,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054790263] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:18,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:18,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:19:18,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182947467] [2024-06-27 19:19:18,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:18,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:19:18,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:18,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:19:18,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:19:18,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:19:18,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 206 transitions, 2519 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:18,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:18,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:19:18,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:19,267 INFO L124 PetriNetUnfolderBase]: 563/979 cut-off events. [2024-06-27 19:19:19,268 INFO L125 PetriNetUnfolderBase]: For 63254/63254 co-relation queries the response was YES. [2024-06-27 19:19:19,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7661 conditions, 979 events. 563/979 cut-off events. For 63254/63254 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4629 event pairs, 83 based on Foata normal form. 1/976 useless extension candidates. Maximal degree in co-relation 7557. Up to 733 conditions per place. [2024-06-27 19:19:19,306 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 143 selfloop transitions, 75 changer transitions 0/220 dead transitions. [2024-06-27 19:19:19,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 220 transitions, 3179 flow [2024-06-27 19:19:19,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:19:19,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:19:19,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-27 19:19:19,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-27 19:19:19,307 INFO L175 Difference]: Start difference. First operand has 217 places, 206 transitions, 2519 flow. Second operand 9 states and 106 transitions. [2024-06-27 19:19:19,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 220 transitions, 3179 flow [2024-06-27 19:19:19,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 220 transitions, 3096 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-27 19:19:19,463 INFO L231 Difference]: Finished difference. Result has 222 places, 208 transitions, 2688 flow [2024-06-27 19:19:19,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2440, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2688, PETRI_PLACES=222, PETRI_TRANSITIONS=208} [2024-06-27 19:19:19,464 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 192 predicate places. [2024-06-27 19:19:19,464 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 208 transitions, 2688 flow [2024-06-27 19:19:19,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:19,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:19,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:19,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 19:19:19,465 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:19:19,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:19,465 INFO L85 PathProgramCache]: Analyzing trace with hash 496661369, now seen corresponding path program 13 times [2024-06-27 19:19:19,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:19,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430661137] [2024-06-27 19:19:19,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:19,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:19,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:20,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:20,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:20,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430661137] [2024-06-27 19:19:20,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430661137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:20,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:20,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:19:20,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257866816] [2024-06-27 19:19:20,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:20,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:19:20,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:20,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:19:20,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:19:20,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:19:20,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 208 transitions, 2688 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:20,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:20,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:19:20,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:21,285 INFO L124 PetriNetUnfolderBase]: 559/973 cut-off events. [2024-06-27 19:19:21,286 INFO L125 PetriNetUnfolderBase]: For 62828/62828 co-relation queries the response was YES. [2024-06-27 19:19:21,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7687 conditions, 973 events. 559/973 cut-off events. For 62828/62828 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4588 event pairs, 96 based on Foata normal form. 2/971 useless extension candidates. Maximal degree in co-relation 7580. Up to 437 conditions per place. [2024-06-27 19:19:21,294 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 128 selfloop transitions, 91 changer transitions 0/221 dead transitions. [2024-06-27 19:19:21,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 221 transitions, 3284 flow [2024-06-27 19:19:21,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:19:21,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:19:21,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-27 19:19:21,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835125448028674 [2024-06-27 19:19:21,296 INFO L175 Difference]: Start difference. First operand has 222 places, 208 transitions, 2688 flow. Second operand 9 states and 107 transitions. [2024-06-27 19:19:21,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 221 transitions, 3284 flow [2024-06-27 19:19:21,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 221 transitions, 3122 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-27 19:19:21,455 INFO L231 Difference]: Finished difference. Result has 223 places, 208 transitions, 2715 flow [2024-06-27 19:19:21,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2528, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2715, PETRI_PLACES=223, PETRI_TRANSITIONS=208} [2024-06-27 19:19:21,456 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 193 predicate places. [2024-06-27 19:19:21,456 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 208 transitions, 2715 flow [2024-06-27 19:19:21,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:21,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:21,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:21,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 19:19:21,456 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:19:21,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:21,456 INFO L85 PathProgramCache]: Analyzing trace with hash -298975973, now seen corresponding path program 14 times [2024-06-27 19:19:21,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:21,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276950797] [2024-06-27 19:19:21,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:21,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:21,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:22,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:22,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:22,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276950797] [2024-06-27 19:19:22,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276950797] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:22,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:22,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:19:22,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050451555] [2024-06-27 19:19:22,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:22,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:19:22,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:22,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:19:22,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:19:22,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:19:22,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 208 transitions, 2715 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:22,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:22,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:19:22,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:22,494 INFO L124 PetriNetUnfolderBase]: 555/966 cut-off events. [2024-06-27 19:19:22,494 INFO L125 PetriNetUnfolderBase]: For 59498/59498 co-relation queries the response was YES. [2024-06-27 19:19:22,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7549 conditions, 966 events. 555/966 cut-off events. For 59498/59498 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4539 event pairs, 165 based on Foata normal form. 2/967 useless extension candidates. Maximal degree in co-relation 7443. Up to 857 conditions per place. [2024-06-27 19:19:22,504 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 190 selfloop transitions, 34 changer transitions 0/226 dead transitions. [2024-06-27 19:19:22,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 226 transitions, 3431 flow [2024-06-27 19:19:22,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:19:22,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:19:22,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-27 19:19:22,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36200716845878134 [2024-06-27 19:19:22,505 INFO L175 Difference]: Start difference. First operand has 223 places, 208 transitions, 2715 flow. Second operand 9 states and 101 transitions. [2024-06-27 19:19:22,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 226 transitions, 3431 flow [2024-06-27 19:19:22,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 226 transitions, 3238 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 19:19:22,655 INFO L231 Difference]: Finished difference. Result has 224 places, 212 transitions, 2698 flow [2024-06-27 19:19:22,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2526, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2698, PETRI_PLACES=224, PETRI_TRANSITIONS=212} [2024-06-27 19:19:22,656 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 194 predicate places. [2024-06-27 19:19:22,656 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 212 transitions, 2698 flow [2024-06-27 19:19:22,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:22,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:22,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:22,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 19:19:22,656 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:19:22,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:22,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1607432188, now seen corresponding path program 1 times [2024-06-27 19:19:22,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:22,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983280226] [2024-06-27 19:19:22,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:22,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:22,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:23,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:23,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:23,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983280226] [2024-06-27 19:19:23,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983280226] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:23,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:23,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:19:23,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763077402] [2024-06-27 19:19:23,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:23,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:19:23,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:23,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:19:23,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:19:23,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:19:23,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 212 transitions, 2698 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:23,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:23,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:19:23,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:23,795 INFO L124 PetriNetUnfolderBase]: 590/1036 cut-off events. [2024-06-27 19:19:23,796 INFO L125 PetriNetUnfolderBase]: For 62145/62145 co-relation queries the response was YES. [2024-06-27 19:19:23,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7729 conditions, 1036 events. 590/1036 cut-off events. For 62145/62145 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5052 event pairs, 95 based on Foata normal form. 2/1037 useless extension candidates. Maximal degree in co-relation 7622. Up to 890 conditions per place. [2024-06-27 19:19:23,807 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 212 selfloop transitions, 27 changer transitions 0/241 dead transitions. [2024-06-27 19:19:23,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 241 transitions, 3339 flow [2024-06-27 19:19:23,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:19:23,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:19:23,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-27 19:19:23,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36917562724014336 [2024-06-27 19:19:23,809 INFO L175 Difference]: Start difference. First operand has 224 places, 212 transitions, 2698 flow. Second operand 9 states and 103 transitions. [2024-06-27 19:19:23,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 241 transitions, 3339 flow [2024-06-27 19:19:23,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 241 transitions, 3240 flow, removed 39 selfloop flow, removed 4 redundant places. [2024-06-27 19:19:23,986 INFO L231 Difference]: Finished difference. Result has 233 places, 223 transitions, 2804 flow [2024-06-27 19:19:23,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2599, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2804, PETRI_PLACES=233, PETRI_TRANSITIONS=223} [2024-06-27 19:19:23,986 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 203 predicate places. [2024-06-27 19:19:23,986 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 223 transitions, 2804 flow [2024-06-27 19:19:23,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:23,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:23,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:23,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 19:19:23,987 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:19:23,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:23,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1561827304, now seen corresponding path program 2 times [2024-06-27 19:19:23,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:23,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672320119] [2024-06-27 19:19:23,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:23,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:24,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:24,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:24,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:24,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672320119] [2024-06-27 19:19:24,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672320119] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:24,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:24,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:19:24,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908342489] [2024-06-27 19:19:24,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:24,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:19:24,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:24,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:19:24,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:19:24,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:19:24,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 223 transitions, 2804 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:24,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:24,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:19:24,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:25,290 INFO L124 PetriNetUnfolderBase]: 598/1052 cut-off events. [2024-06-27 19:19:25,290 INFO L125 PetriNetUnfolderBase]: For 63237/63237 co-relation queries the response was YES. [2024-06-27 19:19:25,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7850 conditions, 1052 events. 598/1052 cut-off events. For 63237/63237 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5177 event pairs, 102 based on Foata normal form. 2/1053 useless extension candidates. Maximal degree in co-relation 7738. Up to 930 conditions per place. [2024-06-27 19:19:25,300 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 209 selfloop transitions, 30 changer transitions 0/241 dead transitions. [2024-06-27 19:19:25,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 241 transitions, 3347 flow [2024-06-27 19:19:25,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:19:25,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:19:25,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-27 19:19:25,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-27 19:19:25,301 INFO L175 Difference]: Start difference. First operand has 233 places, 223 transitions, 2804 flow. Second operand 10 states and 108 transitions. [2024-06-27 19:19:25,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 241 transitions, 3347 flow [2024-06-27 19:19:25,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 241 transitions, 3305 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-06-27 19:19:25,473 INFO L231 Difference]: Finished difference. Result has 243 places, 226 transitions, 2873 flow [2024-06-27 19:19:25,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2762, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2873, PETRI_PLACES=243, PETRI_TRANSITIONS=226} [2024-06-27 19:19:25,473 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 213 predicate places. [2024-06-27 19:19:25,474 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 226 transitions, 2873 flow [2024-06-27 19:19:25,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:25,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:25,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:25,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 19:19:25,474 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:19:25,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:25,474 INFO L85 PathProgramCache]: Analyzing trace with hash 784492030, now seen corresponding path program 3 times [2024-06-27 19:19:25,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:25,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919766107] [2024-06-27 19:19:25,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:25,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:25,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:26,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:26,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:26,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919766107] [2024-06-27 19:19:26,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919766107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:26,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:26,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:19:26,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134960527] [2024-06-27 19:19:26,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:26,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:19:26,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:26,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:19:26,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:19:26,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:19:26,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 226 transitions, 2873 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:26,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:26,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:19:26,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:26,910 INFO L124 PetriNetUnfolderBase]: 608/1070 cut-off events. [2024-06-27 19:19:26,910 INFO L125 PetriNetUnfolderBase]: For 66020/66020 co-relation queries the response was YES. [2024-06-27 19:19:26,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8021 conditions, 1070 events. 608/1070 cut-off events. For 66020/66020 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 5272 event pairs, 102 based on Foata normal form. 2/1071 useless extension candidates. Maximal degree in co-relation 7905. Up to 936 conditions per place. [2024-06-27 19:19:26,919 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 206 selfloop transitions, 38 changer transitions 0/246 dead transitions. [2024-06-27 19:19:26,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 246 transitions, 3461 flow [2024-06-27 19:19:26,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:19:26,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:19:26,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-27 19:19:26,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-27 19:19:26,920 INFO L175 Difference]: Start difference. First operand has 243 places, 226 transitions, 2873 flow. Second operand 10 states and 112 transitions. [2024-06-27 19:19:26,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 246 transitions, 3461 flow [2024-06-27 19:19:27,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 246 transitions, 3403 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-27 19:19:27,111 INFO L231 Difference]: Finished difference. Result has 250 places, 231 transitions, 2980 flow [2024-06-27 19:19:27,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2815, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2980, PETRI_PLACES=250, PETRI_TRANSITIONS=231} [2024-06-27 19:19:27,111 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 220 predicate places. [2024-06-27 19:19:27,111 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 231 transitions, 2980 flow [2024-06-27 19:19:27,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:27,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:27,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:27,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 19:19:27,112 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:19:27,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:27,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1561707148, now seen corresponding path program 1 times [2024-06-27 19:19:27,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:27,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725145920] [2024-06-27 19:19:27,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:27,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:27,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:28,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:28,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:28,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725145920] [2024-06-27 19:19:28,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725145920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:28,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:28,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:19:28,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560693889] [2024-06-27 19:19:28,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:28,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:19:28,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:28,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:19:28,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:19:28,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:19:28,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 231 transitions, 2980 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:28,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:28,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:19:28,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:28,661 INFO L124 PetriNetUnfolderBase]: 611/1075 cut-off events. [2024-06-27 19:19:28,661 INFO L125 PetriNetUnfolderBase]: For 66221/66221 co-relation queries the response was YES. [2024-06-27 19:19:28,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8176 conditions, 1075 events. 611/1075 cut-off events. For 66221/66221 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 5323 event pairs, 101 based on Foata normal form. 1/1075 useless extension candidates. Maximal degree in co-relation 8057. Up to 935 conditions per place. [2024-06-27 19:19:28,671 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 205 selfloop transitions, 41 changer transitions 0/248 dead transitions. [2024-06-27 19:19:28,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 248 transitions, 3574 flow [2024-06-27 19:19:28,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:19:28,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:19:28,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-27 19:19:28,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906810035842294 [2024-06-27 19:19:28,672 INFO L175 Difference]: Start difference. First operand has 250 places, 231 transitions, 2980 flow. Second operand 9 states and 109 transitions. [2024-06-27 19:19:28,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 248 transitions, 3574 flow [2024-06-27 19:19:28,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 248 transitions, 3499 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 19:19:28,911 INFO L231 Difference]: Finished difference. Result has 253 places, 233 transitions, 3060 flow [2024-06-27 19:19:28,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2905, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3060, PETRI_PLACES=253, PETRI_TRANSITIONS=233} [2024-06-27 19:19:28,911 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 223 predicate places. [2024-06-27 19:19:28,911 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 233 transitions, 3060 flow [2024-06-27 19:19:28,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:28,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:28,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:28,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 19:19:28,912 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:19:28,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:28,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1549224418, now seen corresponding path program 4 times [2024-06-27 19:19:28,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:28,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854348399] [2024-06-27 19:19:28,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:28,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:28,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:29,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:29,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:29,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854348399] [2024-06-27 19:19:29,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854348399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:29,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:29,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:19:29,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833160920] [2024-06-27 19:19:29,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:29,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:19:29,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:29,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:19:29,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:19:29,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:19:29,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 233 transitions, 3060 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:29,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:29,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:19:29,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:30,012 INFO L124 PetriNetUnfolderBase]: 629/1109 cut-off events. [2024-06-27 19:19:30,012 INFO L125 PetriNetUnfolderBase]: For 70493/70493 co-relation queries the response was YES. [2024-06-27 19:19:30,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8466 conditions, 1109 events. 629/1109 cut-off events. For 70493/70493 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5563 event pairs, 107 based on Foata normal form. 2/1109 useless extension candidates. Maximal degree in co-relation 8347. Up to 975 conditions per place. [2024-06-27 19:19:30,023 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 215 selfloop transitions, 39 changer transitions 0/256 dead transitions. [2024-06-27 19:19:30,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 256 transitions, 3742 flow [2024-06-27 19:19:30,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:19:30,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:19:30,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-27 19:19:30,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 19:19:30,026 INFO L175 Difference]: Start difference. First operand has 253 places, 233 transitions, 3060 flow. Second operand 10 states and 110 transitions. [2024-06-27 19:19:30,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 256 transitions, 3742 flow [2024-06-27 19:19:30,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 256 transitions, 3613 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-27 19:19:30,222 INFO L231 Difference]: Finished difference. Result has 259 places, 241 transitions, 3178 flow [2024-06-27 19:19:30,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2943, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3178, PETRI_PLACES=259, PETRI_TRANSITIONS=241} [2024-06-27 19:19:30,222 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 229 predicate places. [2024-06-27 19:19:30,223 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 241 transitions, 3178 flow [2024-06-27 19:19:30,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:30,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:30,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:30,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 19:19:30,223 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:19:30,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:30,224 INFO L85 PathProgramCache]: Analyzing trace with hash 19081552, now seen corresponding path program 5 times [2024-06-27 19:19:30,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:30,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675028373] [2024-06-27 19:19:30,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:30,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:30,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:30,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:30,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:30,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675028373] [2024-06-27 19:19:30,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675028373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:30,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:30,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:19:30,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010129547] [2024-06-27 19:19:30,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:30,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:19:30,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:30,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:19:30,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:19:30,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:19:30,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 241 transitions, 3178 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:30,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:30,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:19:30,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:31,327 INFO L124 PetriNetUnfolderBase]: 637/1125 cut-off events. [2024-06-27 19:19:31,327 INFO L125 PetriNetUnfolderBase]: For 72756/72756 co-relation queries the response was YES. [2024-06-27 19:19:31,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8582 conditions, 1125 events. 637/1125 cut-off events. For 72756/72756 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5663 event pairs, 103 based on Foata normal form. 2/1126 useless extension candidates. Maximal degree in co-relation 8458. Up to 974 conditions per place. [2024-06-27 19:19:31,338 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 214 selfloop transitions, 42 changer transitions 0/258 dead transitions. [2024-06-27 19:19:31,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 258 transitions, 3755 flow [2024-06-27 19:19:31,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:19:31,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:19:31,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-27 19:19:31,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 19:19:31,339 INFO L175 Difference]: Start difference. First operand has 259 places, 241 transitions, 3178 flow. Second operand 10 states and 110 transitions. [2024-06-27 19:19:31,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 258 transitions, 3755 flow [2024-06-27 19:19:31,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 258 transitions, 3704 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-27 19:19:31,607 INFO L231 Difference]: Finished difference. Result has 267 places, 243 transitions, 3253 flow [2024-06-27 19:19:31,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3127, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3253, PETRI_PLACES=267, PETRI_TRANSITIONS=243} [2024-06-27 19:19:31,608 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 237 predicate places. [2024-06-27 19:19:31,608 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 243 transitions, 3253 flow [2024-06-27 19:19:31,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:31,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:31,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:31,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 19:19:31,609 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:19:31,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:31,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1634054394, now seen corresponding path program 6 times [2024-06-27 19:19:31,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:31,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034090534] [2024-06-27 19:19:31,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:31,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:31,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:32,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:32,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:32,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034090534] [2024-06-27 19:19:32,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034090534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:32,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:32,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:19:32,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572948986] [2024-06-27 19:19:32,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:32,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:19:32,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:32,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:19:32,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:19:32,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:19:32,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 243 transitions, 3253 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:32,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:32,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:19:32,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:32,882 INFO L124 PetriNetUnfolderBase]: 654/1160 cut-off events. [2024-06-27 19:19:32,882 INFO L125 PetriNetUnfolderBase]: For 75457/75457 co-relation queries the response was YES. [2024-06-27 19:19:32,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8790 conditions, 1160 events. 654/1160 cut-off events. For 75457/75457 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5918 event pairs, 79 based on Foata normal form. 2/1161 useless extension candidates. Maximal degree in co-relation 8663. Up to 950 conditions per place. [2024-06-27 19:19:32,896 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 228 selfloop transitions, 34 changer transitions 0/264 dead transitions. [2024-06-27 19:19:32,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 264 transitions, 3861 flow [2024-06-27 19:19:32,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:19:32,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:19:32,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-27 19:19:32,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32903225806451614 [2024-06-27 19:19:32,898 INFO L175 Difference]: Start difference. First operand has 267 places, 243 transitions, 3253 flow. Second operand 10 states and 102 transitions. [2024-06-27 19:19:32,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 264 transitions, 3861 flow [2024-06-27 19:19:33,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 264 transitions, 3760 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-27 19:19:33,146 INFO L231 Difference]: Finished difference. Result has 272 places, 247 transitions, 3278 flow [2024-06-27 19:19:33,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3154, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3278, PETRI_PLACES=272, PETRI_TRANSITIONS=247} [2024-06-27 19:19:33,147 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 242 predicate places. [2024-06-27 19:19:33,147 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 247 transitions, 3278 flow [2024-06-27 19:19:33,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:33,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:33,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:33,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 19:19:33,147 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:19:33,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:33,147 INFO L85 PathProgramCache]: Analyzing trace with hash 745881462, now seen corresponding path program 7 times [2024-06-27 19:19:33,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:33,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596424024] [2024-06-27 19:19:33,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:33,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:33,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:33,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:33,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:33,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596424024] [2024-06-27 19:19:33,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596424024] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:33,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:33,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:19:33,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36588532] [2024-06-27 19:19:33,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:33,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:19:33,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:33,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:19:33,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:19:33,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:19:33,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 247 transitions, 3278 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:33,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:33,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:19:33,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:34,314 INFO L124 PetriNetUnfolderBase]: 671/1194 cut-off events. [2024-06-27 19:19:34,314 INFO L125 PetriNetUnfolderBase]: For 75757/75757 co-relation queries the response was YES. [2024-06-27 19:19:34,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8970 conditions, 1194 events. 671/1194 cut-off events. For 75757/75757 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 6142 event pairs, 117 based on Foata normal form. 2/1195 useless extension candidates. Maximal degree in co-relation 8840. Up to 1052 conditions per place. [2024-06-27 19:19:34,325 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 234 selfloop transitions, 33 changer transitions 0/269 dead transitions. [2024-06-27 19:19:34,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 269 transitions, 3934 flow [2024-06-27 19:19:34,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:19:34,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:19:34,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-27 19:19:34,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-27 19:19:34,326 INFO L175 Difference]: Start difference. First operand has 272 places, 247 transitions, 3278 flow. Second operand 9 states and 106 transitions. [2024-06-27 19:19:34,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 269 transitions, 3934 flow [2024-06-27 19:19:34,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 269 transitions, 3854 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-27 19:19:34,591 INFO L231 Difference]: Finished difference. Result has 279 places, 252 transitions, 3366 flow [2024-06-27 19:19:34,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3199, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3366, PETRI_PLACES=279, PETRI_TRANSITIONS=252} [2024-06-27 19:19:34,592 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 249 predicate places. [2024-06-27 19:19:34,592 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 252 transitions, 3366 flow [2024-06-27 19:19:34,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:34,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:34,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:34,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 19:19:34,592 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:19:34,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:34,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1587710180, now seen corresponding path program 2 times [2024-06-27 19:19:34,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:34,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916983788] [2024-06-27 19:19:34,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:34,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:34,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:35,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:35,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:35,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916983788] [2024-06-27 19:19:35,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916983788] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:35,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:35,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:19:35,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769171541] [2024-06-27 19:19:35,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:35,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:19:35,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:35,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:19:35,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:19:35,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:19:35,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 252 transitions, 3366 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:35,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:35,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:19:35,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:36,372 INFO L124 PetriNetUnfolderBase]: 680/1209 cut-off events. [2024-06-27 19:19:36,372 INFO L125 PetriNetUnfolderBase]: For 75796/75796 co-relation queries the response was YES. [2024-06-27 19:19:36,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9131 conditions, 1209 events. 680/1209 cut-off events. For 75796/75796 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 6240 event pairs, 116 based on Foata normal form. 1/1209 useless extension candidates. Maximal degree in co-relation 8999. Up to 1068 conditions per place. [2024-06-27 19:19:36,385 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 230 selfloop transitions, 42 changer transitions 0/274 dead transitions. [2024-06-27 19:19:36,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 274 transitions, 4056 flow [2024-06-27 19:19:36,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:19:36,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:19:36,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-27 19:19:36,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-27 19:19:36,386 INFO L175 Difference]: Start difference. First operand has 279 places, 252 transitions, 3366 flow. Second operand 10 states and 112 transitions. [2024-06-27 19:19:36,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 274 transitions, 4056 flow [2024-06-27 19:19:36,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 274 transitions, 3995 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-27 19:19:36,705 INFO L231 Difference]: Finished difference. Result has 288 places, 258 transitions, 3521 flow [2024-06-27 19:19:36,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3305, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3521, PETRI_PLACES=288, PETRI_TRANSITIONS=258} [2024-06-27 19:19:36,706 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 258 predicate places. [2024-06-27 19:19:36,706 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 258 transitions, 3521 flow [2024-06-27 19:19:36,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:36,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:36,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:36,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 19:19:36,706 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:19:36,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:36,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1587710366, now seen corresponding path program 8 times [2024-06-27 19:19:36,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:36,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044129482] [2024-06-27 19:19:36,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:36,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:36,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:37,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:37,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:37,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044129482] [2024-06-27 19:19:37,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044129482] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:37,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:37,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:19:37,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257528937] [2024-06-27 19:19:37,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:37,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:19:37,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:37,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:19:37,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:19:37,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:19:37,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 258 transitions, 3521 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:37,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:37,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:19:37,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:37,896 INFO L124 PetriNetUnfolderBase]: 684/1217 cut-off events. [2024-06-27 19:19:37,897 INFO L125 PetriNetUnfolderBase]: For 80747/80747 co-relation queries the response was YES. [2024-06-27 19:19:37,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9272 conditions, 1217 events. 684/1217 cut-off events. For 80747/80747 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6330 event pairs, 123 based on Foata normal form. 2/1217 useless extension candidates. Maximal degree in co-relation 9136. Up to 1079 conditions per place. [2024-06-27 19:19:37,914 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 232 selfloop transitions, 41 changer transitions 0/275 dead transitions. [2024-06-27 19:19:37,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 275 transitions, 4137 flow [2024-06-27 19:19:37,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:19:37,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:19:37,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-27 19:19:37,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-27 19:19:37,916 INFO L175 Difference]: Start difference. First operand has 288 places, 258 transitions, 3521 flow. Second operand 10 states and 111 transitions. [2024-06-27 19:19:37,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 275 transitions, 4137 flow [2024-06-27 19:19:38,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 275 transitions, 4025 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-27 19:19:38,210 INFO L231 Difference]: Finished difference. Result has 292 places, 259 transitions, 3524 flow [2024-06-27 19:19:38,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3409, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3524, PETRI_PLACES=292, PETRI_TRANSITIONS=259} [2024-06-27 19:19:38,211 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 262 predicate places. [2024-06-27 19:19:38,211 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 259 transitions, 3524 flow [2024-06-27 19:19:38,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:38,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:38,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:38,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 19:19:38,212 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:19:38,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:38,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1587715016, now seen corresponding path program 9 times [2024-06-27 19:19:38,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:38,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591539165] [2024-06-27 19:19:38,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:38,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:38,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:38,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:38,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:38,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591539165] [2024-06-27 19:19:38,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591539165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:38,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:38,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:19:38,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867699807] [2024-06-27 19:19:38,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:38,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:19:38,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:38,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:19:38,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:19:39,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:19:39,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 259 transitions, 3524 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:39,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:39,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:19:39,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:39,445 INFO L124 PetriNetUnfolderBase]: 692/1233 cut-off events. [2024-06-27 19:19:39,445 INFO L125 PetriNetUnfolderBase]: For 83509/83509 co-relation queries the response was YES. [2024-06-27 19:19:39,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9371 conditions, 1233 events. 692/1233 cut-off events. For 83509/83509 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 6453 event pairs, 123 based on Foata normal form. 2/1233 useless extension candidates. Maximal degree in co-relation 9234. Up to 1098 conditions per place. [2024-06-27 19:19:39,458 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 237 selfloop transitions, 38 changer transitions 0/277 dead transitions. [2024-06-27 19:19:39,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 277 transitions, 4147 flow [2024-06-27 19:19:39,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:19:39,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:19:39,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-27 19:19:39,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 19:19:39,459 INFO L175 Difference]: Start difference. First operand has 292 places, 259 transitions, 3524 flow. Second operand 10 states and 110 transitions. [2024-06-27 19:19:39,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 277 transitions, 4147 flow [2024-06-27 19:19:39,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 277 transitions, 4053 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 19:19:39,753 INFO L231 Difference]: Finished difference. Result has 296 places, 261 transitions, 3548 flow [2024-06-27 19:19:39,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3430, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3548, PETRI_PLACES=296, PETRI_TRANSITIONS=261} [2024-06-27 19:19:39,753 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 266 predicate places. [2024-06-27 19:19:39,753 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 261 transitions, 3548 flow [2024-06-27 19:19:39,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:39,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:39,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:39,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 19:19:39,754 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:19:39,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:39,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1417007936, now seen corresponding path program 10 times [2024-06-27 19:19:39,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:39,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690618533] [2024-06-27 19:19:39,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:39,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:39,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:40,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:40,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:40,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690618533] [2024-06-27 19:19:40,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690618533] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:40,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:40,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:19:40,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594998628] [2024-06-27 19:19:40,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:40,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:19:40,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:40,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:19:40,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:19:40,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:19:40,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 261 transitions, 3548 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:40,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:40,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:19:40,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:41,061 INFO L124 PetriNetUnfolderBase]: 696/1243 cut-off events. [2024-06-27 19:19:41,062 INFO L125 PetriNetUnfolderBase]: For 85952/85952 co-relation queries the response was YES. [2024-06-27 19:19:41,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9449 conditions, 1243 events. 696/1243 cut-off events. For 85952/85952 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6527 event pairs, 116 based on Foata normal form. 2/1241 useless extension candidates. Maximal degree in co-relation 9310. Up to 1096 conditions per place. [2024-06-27 19:19:41,073 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 235 selfloop transitions, 41 changer transitions 0/278 dead transitions. [2024-06-27 19:19:41,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 278 transitions, 4174 flow [2024-06-27 19:19:41,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:19:41,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:19:41,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-27 19:19:41,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-27 19:19:41,074 INFO L175 Difference]: Start difference. First operand has 296 places, 261 transitions, 3548 flow. Second operand 10 states and 109 transitions. [2024-06-27 19:19:41,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 278 transitions, 4174 flow [2024-06-27 19:19:41,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 278 transitions, 4077 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-27 19:19:41,399 INFO L231 Difference]: Finished difference. Result has 299 places, 262 transitions, 3569 flow [2024-06-27 19:19:41,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3451, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3569, PETRI_PLACES=299, PETRI_TRANSITIONS=262} [2024-06-27 19:19:41,400 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 269 predicate places. [2024-06-27 19:19:41,400 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 262 transitions, 3569 flow [2024-06-27 19:19:41,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:41,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:41,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:41,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 19:19:41,400 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:19:41,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:41,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1417012586, now seen corresponding path program 11 times [2024-06-27 19:19:41,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:41,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263722117] [2024-06-27 19:19:41,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:41,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:41,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:42,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:42,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:42,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263722117] [2024-06-27 19:19:42,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263722117] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:42,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:42,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:19:42,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766339035] [2024-06-27 19:19:42,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:42,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:19:42,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:42,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:19:42,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:19:42,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:19:42,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 262 transitions, 3569 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:42,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:42,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:19:42,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:42,660 INFO L124 PetriNetUnfolderBase]: 704/1259 cut-off events. [2024-06-27 19:19:42,660 INFO L125 PetriNetUnfolderBase]: For 88308/88308 co-relation queries the response was YES. [2024-06-27 19:19:42,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9555 conditions, 1259 events. 704/1259 cut-off events. For 88308/88308 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6652 event pairs, 114 based on Foata normal form. 2/1257 useless extension candidates. Maximal degree in co-relation 9415. Up to 1112 conditions per place. [2024-06-27 19:19:42,672 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 238 selfloop transitions, 40 changer transitions 0/280 dead transitions. [2024-06-27 19:19:42,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 280 transitions, 4202 flow [2024-06-27 19:19:42,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:19:42,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:19:42,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-27 19:19:42,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-27 19:19:42,674 INFO L175 Difference]: Start difference. First operand has 299 places, 262 transitions, 3569 flow. Second operand 10 states and 108 transitions. [2024-06-27 19:19:42,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 280 transitions, 4202 flow [2024-06-27 19:19:42,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 280 transitions, 4094 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 19:19:42,987 INFO L231 Difference]: Finished difference. Result has 302 places, 264 transitions, 3586 flow [2024-06-27 19:19:42,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3461, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3586, PETRI_PLACES=302, PETRI_TRANSITIONS=264} [2024-06-27 19:19:42,988 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 272 predicate places. [2024-06-27 19:19:42,988 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 264 transitions, 3586 flow [2024-06-27 19:19:42,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:42,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:42,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:42,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 19:19:42,988 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:19:42,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:42,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1583061792, now seen corresponding path program 1 times [2024-06-27 19:19:42,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:42,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18104963] [2024-06-27 19:19:42,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:42,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:42,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:44,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:44,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:44,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18104963] [2024-06-27 19:19:44,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18104963] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:44,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:44,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:19:44,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270090082] [2024-06-27 19:19:44,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:44,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:19:44,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:44,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:19:44,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:19:44,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:19:44,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 264 transitions, 3586 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:44,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:44,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:19:44,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:44,915 INFO L124 PetriNetUnfolderBase]: 713/1274 cut-off events. [2024-06-27 19:19:44,915 INFO L125 PetriNetUnfolderBase]: For 90463/90463 co-relation queries the response was YES. [2024-06-27 19:19:44,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9671 conditions, 1274 events. 713/1274 cut-off events. For 90463/90463 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 6754 event pairs, 123 based on Foata normal form. 2/1272 useless extension candidates. Maximal degree in co-relation 9529. Up to 1129 conditions per place. [2024-06-27 19:19:44,928 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 240 selfloop transitions, 44 changer transitions 0/286 dead transitions. [2024-06-27 19:19:44,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 286 transitions, 4288 flow [2024-06-27 19:19:44,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:19:44,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:19:44,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-27 19:19:44,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-27 19:19:44,929 INFO L175 Difference]: Start difference. First operand has 302 places, 264 transitions, 3586 flow. Second operand 11 states and 120 transitions. [2024-06-27 19:19:44,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 286 transitions, 4288 flow [2024-06-27 19:19:45,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 286 transitions, 4182 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-27 19:19:45,256 INFO L231 Difference]: Finished difference. Result has 307 places, 269 transitions, 3673 flow [2024-06-27 19:19:45,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3480, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3673, PETRI_PLACES=307, PETRI_TRANSITIONS=269} [2024-06-27 19:19:45,257 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 277 predicate places. [2024-06-27 19:19:45,257 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 269 transitions, 3673 flow [2024-06-27 19:19:45,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:45,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:45,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:45,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 19:19:45,257 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:19:45,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:45,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1416828012, now seen corresponding path program 2 times [2024-06-27 19:19:45,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:45,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633002870] [2024-06-27 19:19:45,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:45,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:45,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:46,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:46,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:46,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633002870] [2024-06-27 19:19:46,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633002870] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:46,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:46,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:19:46,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99539953] [2024-06-27 19:19:46,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:46,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:19:46,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:46,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:19:46,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:19:46,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:19:46,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 269 transitions, 3673 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:46,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:46,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:19:46,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:47,027 INFO L124 PetriNetUnfolderBase]: 719/1284 cut-off events. [2024-06-27 19:19:47,028 INFO L125 PetriNetUnfolderBase]: For 92911/92911 co-relation queries the response was YES. [2024-06-27 19:19:47,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9872 conditions, 1284 events. 719/1284 cut-off events. For 92911/92911 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6797 event pairs, 116 based on Foata normal form. 2/1282 useless extension candidates. Maximal degree in co-relation 9728. Up to 1127 conditions per place. [2024-06-27 19:19:47,041 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 243 selfloop transitions, 44 changer transitions 0/289 dead transitions. [2024-06-27 19:19:47,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 289 transitions, 4369 flow [2024-06-27 19:19:47,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:19:47,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:19:47,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-27 19:19:47,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-27 19:19:47,042 INFO L175 Difference]: Start difference. First operand has 307 places, 269 transitions, 3673 flow. Second operand 11 states and 119 transitions. [2024-06-27 19:19:47,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 289 transitions, 4369 flow [2024-06-27 19:19:47,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 289 transitions, 4250 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-27 19:19:47,371 INFO L231 Difference]: Finished difference. Result has 310 places, 271 transitions, 3711 flow [2024-06-27 19:19:47,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3554, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3711, PETRI_PLACES=310, PETRI_TRANSITIONS=271} [2024-06-27 19:19:47,372 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 280 predicate places. [2024-06-27 19:19:47,372 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 271 transitions, 3711 flow [2024-06-27 19:19:47,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:47,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:47,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:47,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 19:19:47,372 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:19:47,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:47,373 INFO L85 PathProgramCache]: Analyzing trace with hash 923132952, now seen corresponding path program 12 times [2024-06-27 19:19:47,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:47,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308139023] [2024-06-27 19:19:47,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:47,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:47,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:48,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:48,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:48,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308139023] [2024-06-27 19:19:48,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308139023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:48,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:48,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:19:48,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952565757] [2024-06-27 19:19:48,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:48,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:19:48,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:48,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:19:48,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:19:48,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:19:48,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 271 transitions, 3711 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:48,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:48,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:19:48,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:48,482 INFO L124 PetriNetUnfolderBase]: 723/1292 cut-off events. [2024-06-27 19:19:48,482 INFO L125 PetriNetUnfolderBase]: For 95605/95605 co-relation queries the response was YES. [2024-06-27 19:19:48,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9962 conditions, 1292 events. 723/1292 cut-off events. For 95605/95605 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6879 event pairs, 116 based on Foata normal form. 2/1290 useless extension candidates. Maximal degree in co-relation 9817. Up to 1120 conditions per place. [2024-06-27 19:19:48,496 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 239 selfloop transitions, 47 changer transitions 0/288 dead transitions. [2024-06-27 19:19:48,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 288 transitions, 4367 flow [2024-06-27 19:19:48,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:19:48,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:19:48,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-27 19:19:48,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 19:19:48,496 INFO L175 Difference]: Start difference. First operand has 310 places, 271 transitions, 3711 flow. Second operand 10 states and 110 transitions. [2024-06-27 19:19:48,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 288 transitions, 4367 flow [2024-06-27 19:19:48,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 288 transitions, 4234 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-27 19:19:48,853 INFO L231 Difference]: Finished difference. Result has 311 places, 272 transitions, 3712 flow [2024-06-27 19:19:48,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3578, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3712, PETRI_PLACES=311, PETRI_TRANSITIONS=272} [2024-06-27 19:19:48,854 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 281 predicate places. [2024-06-27 19:19:48,854 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 272 transitions, 3712 flow [2024-06-27 19:19:48,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:48,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:48,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:48,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 19:19:48,854 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:19:48,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:48,854 INFO L85 PathProgramCache]: Analyzing trace with hash 923370536, now seen corresponding path program 3 times [2024-06-27 19:19:48,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:48,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498514586] [2024-06-27 19:19:48,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:48,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:48,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:50,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:50,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:50,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498514586] [2024-06-27 19:19:50,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498514586] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:50,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:50,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:19:50,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131529736] [2024-06-27 19:19:50,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:50,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:19:50,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:50,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:19:50,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:19:50,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:19:50,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 272 transitions, 3712 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:50,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:50,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:19:50,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:50,746 INFO L124 PetriNetUnfolderBase]: 729/1302 cut-off events. [2024-06-27 19:19:50,746 INFO L125 PetriNetUnfolderBase]: For 97891/97891 co-relation queries the response was YES. [2024-06-27 19:19:50,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10059 conditions, 1302 events. 729/1302 cut-off events. For 97891/97891 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 6955 event pairs, 114 based on Foata normal form. 2/1300 useless extension candidates. Maximal degree in co-relation 9913. Up to 1086 conditions per place. [2024-06-27 19:19:50,760 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 230 selfloop transitions, 60 changer transitions 0/292 dead transitions. [2024-06-27 19:19:50,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 292 transitions, 4418 flow [2024-06-27 19:19:50,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:19:50,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:19:50,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-27 19:19:50,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 19:19:50,761 INFO L175 Difference]: Start difference. First operand has 311 places, 272 transitions, 3712 flow. Second operand 11 states and 121 transitions. [2024-06-27 19:19:50,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 292 transitions, 4418 flow [2024-06-27 19:19:51,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 292 transitions, 4294 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-27 19:19:51,151 INFO L231 Difference]: Finished difference. Result has 314 places, 274 transitions, 3781 flow [2024-06-27 19:19:51,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3588, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3781, PETRI_PLACES=314, PETRI_TRANSITIONS=274} [2024-06-27 19:19:51,152 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 284 predicate places. [2024-06-27 19:19:51,152 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 274 transitions, 3781 flow [2024-06-27 19:19:51,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:51,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:51,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:51,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 19:19:51,152 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:19:51,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:51,153 INFO L85 PathProgramCache]: Analyzing trace with hash 923378906, now seen corresponding path program 4 times [2024-06-27 19:19:51,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:51,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789438691] [2024-06-27 19:19:51,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:51,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:51,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:52,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:52,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:52,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789438691] [2024-06-27 19:19:52,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789438691] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:52,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:52,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:19:52,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066362510] [2024-06-27 19:19:52,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:52,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:19:52,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:52,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:19:52,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:19:52,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:19:52,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 274 transitions, 3781 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:52,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:52,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:19:52,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:52,808 INFO L124 PetriNetUnfolderBase]: 735/1312 cut-off events. [2024-06-27 19:19:52,808 INFO L125 PetriNetUnfolderBase]: For 100670/100670 co-relation queries the response was YES. [2024-06-27 19:19:52,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10192 conditions, 1312 events. 735/1312 cut-off events. For 100670/100670 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7023 event pairs, 114 based on Foata normal form. 2/1310 useless extension candidates. Maximal degree in co-relation 10045. Up to 1053 conditions per place. [2024-06-27 19:19:52,827 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 223 selfloop transitions, 71 changer transitions 0/296 dead transitions. [2024-06-27 19:19:52,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 296 transitions, 4507 flow [2024-06-27 19:19:52,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:19:52,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:19:52,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-27 19:19:52,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3521505376344086 [2024-06-27 19:19:52,829 INFO L175 Difference]: Start difference. First operand has 314 places, 274 transitions, 3781 flow. Second operand 12 states and 131 transitions. [2024-06-27 19:19:52,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 296 transitions, 4507 flow [2024-06-27 19:19:53,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 296 transitions, 4338 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-27 19:19:53,192 INFO L231 Difference]: Finished difference. Result has 317 places, 276 transitions, 3834 flow [2024-06-27 19:19:53,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3612, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3834, PETRI_PLACES=317, PETRI_TRANSITIONS=276} [2024-06-27 19:19:53,192 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 287 predicate places. [2024-06-27 19:19:53,192 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 276 transitions, 3834 flow [2024-06-27 19:19:53,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:53,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:53,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:53,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 19:19:53,193 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:19:53,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:53,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1410332582, now seen corresponding path program 1 times [2024-06-27 19:19:53,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:53,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489082272] [2024-06-27 19:19:53,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:53,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:53,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:54,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:54,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:54,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489082272] [2024-06-27 19:19:54,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489082272] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:54,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:54,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:19:54,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725929080] [2024-06-27 19:19:54,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:54,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:19:54,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:54,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:19:54,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:19:54,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:19:54,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 276 transitions, 3834 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:54,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:54,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:19:54,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:55,175 INFO L124 PetriNetUnfolderBase]: 759/1364 cut-off events. [2024-06-27 19:19:55,176 INFO L125 PetriNetUnfolderBase]: For 139522/139522 co-relation queries the response was YES. [2024-06-27 19:19:55,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10507 conditions, 1364 events. 759/1364 cut-off events. For 139522/139522 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 7370 event pairs, 132 based on Foata normal form. 14/1374 useless extension candidates. Maximal degree in co-relation 10359. Up to 1152 conditions per place. [2024-06-27 19:19:55,190 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 244 selfloop transitions, 46 changer transitions 9/301 dead transitions. [2024-06-27 19:19:55,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 301 transitions, 4598 flow [2024-06-27 19:19:55,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:19:55,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:19:55,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-27 19:19:55,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-27 19:19:55,191 INFO L175 Difference]: Start difference. First operand has 317 places, 276 transitions, 3834 flow. Second operand 12 states and 135 transitions. [2024-06-27 19:19:55,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 301 transitions, 4598 flow [2024-06-27 19:19:55,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 301 transitions, 4404 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-27 19:19:55,566 INFO L231 Difference]: Finished difference. Result has 320 places, 275 transitions, 3741 flow [2024-06-27 19:19:55,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3640, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3741, PETRI_PLACES=320, PETRI_TRANSITIONS=275} [2024-06-27 19:19:55,567 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 290 predicate places. [2024-06-27 19:19:55,567 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 275 transitions, 3741 flow [2024-06-27 19:19:55,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:55,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:55,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:55,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 19:19:55,568 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:19:55,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:55,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1992726314, now seen corresponding path program 13 times [2024-06-27 19:19:55,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:55,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599879788] [2024-06-27 19:19:55,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:55,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:55,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:56,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:56,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:56,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599879788] [2024-06-27 19:19:56,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599879788] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:56,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:56,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:19:56,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277952254] [2024-06-27 19:19:56,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:56,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:19:56,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:56,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:19:56,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:19:56,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:19:56,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 275 transitions, 3741 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:56,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:56,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:19:56,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:56,808 INFO L124 PetriNetUnfolderBase]: 751/1350 cut-off events. [2024-06-27 19:19:56,808 INFO L125 PetriNetUnfolderBase]: For 103045/103045 co-relation queries the response was YES. [2024-06-27 19:19:56,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10330 conditions, 1350 events. 751/1350 cut-off events. For 103045/103045 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 7276 event pairs, 95 based on Foata normal form. 2/1351 useless extension candidates. Maximal degree in co-relation 10181. Up to 1090 conditions per place. [2024-06-27 19:19:56,824 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 247 selfloop transitions, 41 changer transitions 0/290 dead transitions. [2024-06-27 19:19:56,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 290 transitions, 4385 flow [2024-06-27 19:19:56,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:19:56,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:19:56,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-06-27 19:19:56,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-27 19:19:56,825 INFO L175 Difference]: Start difference. First operand has 320 places, 275 transitions, 3741 flow. Second operand 9 states and 93 transitions. [2024-06-27 19:19:56,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 290 transitions, 4385 flow [2024-06-27 19:19:57,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 290 transitions, 4271 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-27 19:19:57,228 INFO L231 Difference]: Finished difference. Result has 319 places, 276 transitions, 3755 flow [2024-06-27 19:19:57,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3627, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3755, PETRI_PLACES=319, PETRI_TRANSITIONS=276} [2024-06-27 19:19:57,229 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 289 predicate places. [2024-06-27 19:19:57,229 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 276 transitions, 3755 flow [2024-06-27 19:19:57,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:57,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:57,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:57,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 19:19:57,230 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:19:57,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:57,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1701263174, now seen corresponding path program 14 times [2024-06-27 19:19:57,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:57,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86428707] [2024-06-27 19:19:57,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:57,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:57,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:58,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:58,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:58,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86428707] [2024-06-27 19:19:58,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86428707] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:58,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:58,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:19:58,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250010946] [2024-06-27 19:19:58,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:58,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:19:58,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:58,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:19:58,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:19:58,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:19:58,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 276 transitions, 3755 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:58,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:58,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:19:58,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:58,622 INFO L124 PetriNetUnfolderBase]: 755/1358 cut-off events. [2024-06-27 19:19:58,622 INFO L125 PetriNetUnfolderBase]: For 105323/105323 co-relation queries the response was YES. [2024-06-27 19:19:58,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10422 conditions, 1358 events. 755/1358 cut-off events. For 105323/105323 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 7341 event pairs, 134 based on Foata normal form. 2/1359 useless extension candidates. Maximal degree in co-relation 10272. Up to 1202 conditions per place. [2024-06-27 19:19:58,636 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 247 selfloop transitions, 41 changer transitions 0/290 dead transitions. [2024-06-27 19:19:58,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 290 transitions, 4399 flow [2024-06-27 19:19:58,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:19:58,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:19:58,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-27 19:19:58,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-27 19:19:58,638 INFO L175 Difference]: Start difference. First operand has 319 places, 276 transitions, 3755 flow. Second operand 9 states and 96 transitions. [2024-06-27 19:19:58,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 290 transitions, 4399 flow [2024-06-27 19:19:59,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 290 transitions, 4281 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-27 19:19:59,065 INFO L231 Difference]: Finished difference. Result has 321 places, 277 transitions, 3765 flow [2024-06-27 19:19:59,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3641, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3765, PETRI_PLACES=321, PETRI_TRANSITIONS=277} [2024-06-27 19:19:59,065 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 291 predicate places. [2024-06-27 19:19:59,065 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 277 transitions, 3765 flow [2024-06-27 19:19:59,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:59,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:59,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:59,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 19:19:59,066 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:19:59,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:59,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1701143018, now seen corresponding path program 3 times [2024-06-27 19:19:59,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:59,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624873816] [2024-06-27 19:19:59,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:59,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:59,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:00,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:00,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:00,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624873816] [2024-06-27 19:20:00,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624873816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:00,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:00,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:20:00,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792074268] [2024-06-27 19:20:00,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:00,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:20:00,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:00,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:20:00,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:20:00,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:20:00,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 277 transitions, 3765 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:00,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:00,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:20:00,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:00,789 INFO L124 PetriNetUnfolderBase]: 753/1355 cut-off events. [2024-06-27 19:20:00,789 INFO L125 PetriNetUnfolderBase]: For 96020/96020 co-relation queries the response was YES. [2024-06-27 19:20:00,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10203 conditions, 1355 events. 753/1355 cut-off events. For 96020/96020 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 7338 event pairs, 126 based on Foata normal form. 1/1355 useless extension candidates. Maximal degree in co-relation 10052. Up to 1160 conditions per place. [2024-06-27 19:20:00,804 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 224 selfloop transitions, 66 changer transitions 0/292 dead transitions. [2024-06-27 19:20:00,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 292 transitions, 4453 flow [2024-06-27 19:20:00,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:20:00,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:20:00,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-27 19:20:00,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-27 19:20:00,805 INFO L175 Difference]: Start difference. First operand has 321 places, 277 transitions, 3765 flow. Second operand 9 states and 102 transitions. [2024-06-27 19:20:00,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 292 transitions, 4453 flow [2024-06-27 19:20:01,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 292 transitions, 4341 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-27 19:20:01,242 INFO L231 Difference]: Finished difference. Result has 323 places, 279 transitions, 3870 flow [2024-06-27 19:20:01,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3653, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3870, PETRI_PLACES=323, PETRI_TRANSITIONS=279} [2024-06-27 19:20:01,243 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 293 predicate places. [2024-06-27 19:20:01,243 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 279 transitions, 3870 flow [2024-06-27 19:20:01,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:01,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:01,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:20:01,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 19:20:01,244 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:20:01,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:01,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1701143204, now seen corresponding path program 15 times [2024-06-27 19:20:01,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:01,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213965785] [2024-06-27 19:20:01,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:01,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:01,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:02,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:02,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:02,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213965785] [2024-06-27 19:20:02,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213965785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:02,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:02,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:20:02,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144112442] [2024-06-27 19:20:02,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:02,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:20:02,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:02,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:20:02,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:20:02,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:20:02,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 279 transitions, 3870 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:02,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:02,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:20:02,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:02,696 INFO L124 PetriNetUnfolderBase]: 757/1363 cut-off events. [2024-06-27 19:20:02,696 INFO L125 PetriNetUnfolderBase]: For 99138/99138 co-relation queries the response was YES. [2024-06-27 19:20:02,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10320 conditions, 1363 events. 757/1363 cut-off events. For 99138/99138 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 7390 event pairs, 128 based on Foata normal form. 2/1364 useless extension candidates. Maximal degree in co-relation 10168. Up to 1180 conditions per place. [2024-06-27 19:20:02,711 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 232 selfloop transitions, 59 changer transitions 0/293 dead transitions. [2024-06-27 19:20:02,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 293 transitions, 4524 flow [2024-06-27 19:20:02,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:20:02,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:20:02,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-27 19:20:02,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35842293906810035 [2024-06-27 19:20:02,712 INFO L175 Difference]: Start difference. First operand has 323 places, 279 transitions, 3870 flow. Second operand 9 states and 100 transitions. [2024-06-27 19:20:02,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 293 transitions, 4524 flow [2024-06-27 19:20:03,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 293 transitions, 4355 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-27 19:20:03,132 INFO L231 Difference]: Finished difference. Result has 325 places, 280 transitions, 3863 flow [2024-06-27 19:20:03,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3701, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3863, PETRI_PLACES=325, PETRI_TRANSITIONS=280} [2024-06-27 19:20:03,132 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 295 predicate places. [2024-06-27 19:20:03,132 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 280 transitions, 3863 flow [2024-06-27 19:20:03,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:03,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:03,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:20:03,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 19:20:03,133 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:20:03,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:03,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1701147854, now seen corresponding path program 16 times [2024-06-27 19:20:03,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:03,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526001314] [2024-06-27 19:20:03,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:03,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:03,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:03,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:03,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:03,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526001314] [2024-06-27 19:20:03,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526001314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:03,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:03,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:20:03,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120348911] [2024-06-27 19:20:03,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:03,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:20:03,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:03,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:20:03,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:20:03,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:20:03,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 280 transitions, 3863 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:03,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:03,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:20:03,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:04,455 INFO L124 PetriNetUnfolderBase]: 761/1371 cut-off events. [2024-06-27 19:20:04,455 INFO L125 PetriNetUnfolderBase]: For 99488/99488 co-relation queries the response was YES. [2024-06-27 19:20:04,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10367 conditions, 1371 events. 761/1371 cut-off events. For 99488/99488 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7443 event pairs, 124 based on Foata normal form. 2/1372 useless extension candidates. Maximal degree in co-relation 10214. Up to 1188 conditions per place. [2024-06-27 19:20:04,467 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 239 selfloop transitions, 53 changer transitions 0/294 dead transitions. [2024-06-27 19:20:04,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 294 transitions, 4517 flow [2024-06-27 19:20:04,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:20:04,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:20:04,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-27 19:20:04,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-27 19:20:04,468 INFO L175 Difference]: Start difference. First operand has 325 places, 280 transitions, 3863 flow. Second operand 9 states and 98 transitions. [2024-06-27 19:20:04,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 294 transitions, 4517 flow [2024-06-27 19:20:04,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 294 transitions, 4369 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-27 19:20:04,857 INFO L231 Difference]: Finished difference. Result has 327 places, 281 transitions, 3867 flow [2024-06-27 19:20:04,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3717, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3867, PETRI_PLACES=327, PETRI_TRANSITIONS=281} [2024-06-27 19:20:04,858 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 297 predicate places. [2024-06-27 19:20:04,858 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 281 transitions, 3867 flow [2024-06-27 19:20:04,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:04,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:04,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:20:04,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 19:20:04,858 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:20:04,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:04,858 INFO L85 PathProgramCache]: Analyzing trace with hash 111847610, now seen corresponding path program 17 times [2024-06-27 19:20:04,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:04,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475951775] [2024-06-27 19:20:04,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:04,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:04,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:05,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:05,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:05,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475951775] [2024-06-27 19:20:05,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475951775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:05,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:05,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:20:05,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410598157] [2024-06-27 19:20:05,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:05,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:20:05,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:05,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:20:05,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:20:05,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:20:05,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 281 transitions, 3867 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:05,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:05,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:20:05,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:06,160 INFO L124 PetriNetUnfolderBase]: 765/1379 cut-off events. [2024-06-27 19:20:06,160 INFO L125 PetriNetUnfolderBase]: For 99995/99995 co-relation queries the response was YES. [2024-06-27 19:20:06,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10396 conditions, 1379 events. 765/1379 cut-off events. For 99995/99995 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7509 event pairs, 109 based on Foata normal form. 2/1380 useless extension candidates. Maximal degree in co-relation 10242. Up to 1177 conditions per place. [2024-06-27 19:20:06,177 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 249 selfloop transitions, 47 changer transitions 0/298 dead transitions. [2024-06-27 19:20:06,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 298 transitions, 4551 flow [2024-06-27 19:20:06,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:20:06,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:20:06,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-27 19:20:06,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 19:20:06,178 INFO L175 Difference]: Start difference. First operand has 327 places, 281 transitions, 3867 flow. Second operand 9 states and 99 transitions. [2024-06-27 19:20:06,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 298 transitions, 4551 flow [2024-06-27 19:20:06,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 298 transitions, 4415 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-27 19:20:06,605 INFO L231 Difference]: Finished difference. Result has 329 places, 282 transitions, 3869 flow [2024-06-27 19:20:06,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3733, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3869, PETRI_PLACES=329, PETRI_TRANSITIONS=282} [2024-06-27 19:20:06,605 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 299 predicate places. [2024-06-27 19:20:06,605 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 282 transitions, 3869 flow [2024-06-27 19:20:06,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:06,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:06,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:20:06,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 19:20:06,606 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:20:06,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:06,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1409160948, now seen corresponding path program 4 times [2024-06-27 19:20:06,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:06,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992857704] [2024-06-27 19:20:06,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:06,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:06,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:07,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:07,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:07,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992857704] [2024-06-27 19:20:07,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992857704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:07,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:07,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:20:07,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259548792] [2024-06-27 19:20:07,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:07,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:20:07,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:07,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:20:07,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:20:07,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:20:07,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 282 transitions, 3869 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:07,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:07,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:20:07,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:08,559 INFO L124 PetriNetUnfolderBase]: 761/1373 cut-off events. [2024-06-27 19:20:08,560 INFO L125 PetriNetUnfolderBase]: For 93284/93284 co-relation queries the response was YES. [2024-06-27 19:20:08,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10112 conditions, 1373 events. 761/1373 cut-off events. For 93284/93284 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7499 event pairs, 145 based on Foata normal form. 2/1374 useless extension candidates. Maximal degree in co-relation 9957. Up to 1200 conditions per place. [2024-06-27 19:20:08,576 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 230 selfloop transitions, 66 changer transitions 0/298 dead transitions. [2024-06-27 19:20:08,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 298 transitions, 4567 flow [2024-06-27 19:20:08,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:20:08,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:20:08,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-27 19:20:08,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-27 19:20:08,577 INFO L175 Difference]: Start difference. First operand has 329 places, 282 transitions, 3869 flow. Second operand 9 states and 102 transitions. [2024-06-27 19:20:08,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 298 transitions, 4567 flow [2024-06-27 19:20:09,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 298 transitions, 4425 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-27 19:20:09,089 INFO L231 Difference]: Finished difference. Result has 331 places, 283 transitions, 3923 flow [2024-06-27 19:20:09,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3727, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3923, PETRI_PLACES=331, PETRI_TRANSITIONS=283} [2024-06-27 19:20:09,090 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 301 predicate places. [2024-06-27 19:20:09,090 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 283 transitions, 3923 flow [2024-06-27 19:20:09,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:09,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:09,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:20:09,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 19:20:09,091 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:20:09,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:09,091 INFO L85 PathProgramCache]: Analyzing trace with hash -333449978, now seen corresponding path program 18 times [2024-06-27 19:20:09,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:09,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346879858] [2024-06-27 19:20:09,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:09,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:09,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:09,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:09,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:09,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346879858] [2024-06-27 19:20:09,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346879858] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:09,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:09,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:20:09,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599483393] [2024-06-27 19:20:09,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:09,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:20:09,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:09,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:20:09,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:20:10,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:20:10,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 283 transitions, 3923 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:10,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:10,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:20:10,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:10,619 INFO L124 PetriNetUnfolderBase]: 765/1381 cut-off events. [2024-06-27 19:20:10,619 INFO L125 PetriNetUnfolderBase]: For 92993/92993 co-relation queries the response was YES. [2024-06-27 19:20:10,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10168 conditions, 1381 events. 765/1381 cut-off events. For 92993/92993 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 7527 event pairs, 147 based on Foata normal form. 2/1382 useless extension candidates. Maximal degree in co-relation 10012. Up to 1215 conditions per place. [2024-06-27 19:20:10,634 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 241 selfloop transitions, 57 changer transitions 0/300 dead transitions. [2024-06-27 19:20:10,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 300 transitions, 4617 flow [2024-06-27 19:20:10,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:20:10,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:20:10,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-27 19:20:10,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36200716845878134 [2024-06-27 19:20:10,635 INFO L175 Difference]: Start difference. First operand has 331 places, 283 transitions, 3923 flow. Second operand 9 states and 101 transitions. [2024-06-27 19:20:10,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 300 transitions, 4617 flow [2024-06-27 19:20:11,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 300 transitions, 4409 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-06-27 19:20:11,045 INFO L231 Difference]: Finished difference. Result has 332 places, 284 transitions, 3873 flow [2024-06-27 19:20:11,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3715, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3873, PETRI_PLACES=332, PETRI_TRANSITIONS=284} [2024-06-27 19:20:11,045 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 302 predicate places. [2024-06-27 19:20:11,046 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 284 transitions, 3873 flow [2024-06-27 19:20:11,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:11,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:11,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:20:11,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 19:20:11,046 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:20:11,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:11,047 INFO L85 PathProgramCache]: Analyzing trace with hash 111962930, now seen corresponding path program 19 times [2024-06-27 19:20:11,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:11,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461270378] [2024-06-27 19:20:11,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:11,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:11,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:12,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:12,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:12,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461270378] [2024-06-27 19:20:12,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461270378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:12,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:12,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:20:12,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089958302] [2024-06-27 19:20:12,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:12,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:20:12,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:12,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:20:12,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:20:12,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:20:12,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 284 transitions, 3873 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:12,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:12,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:20:12,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:12,615 INFO L124 PetriNetUnfolderBase]: 769/1389 cut-off events. [2024-06-27 19:20:12,615 INFO L125 PetriNetUnfolderBase]: For 93050/93050 co-relation queries the response was YES. [2024-06-27 19:20:12,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10136 conditions, 1389 events. 769/1389 cut-off events. For 93050/93050 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 7597 event pairs, 153 based on Foata normal form. 2/1387 useless extension candidates. Maximal degree in co-relation 9980. Up to 1254 conditions per place. [2024-06-27 19:20:12,629 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 257 selfloop transitions, 38 changer transitions 0/297 dead transitions. [2024-06-27 19:20:12,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 297 transitions, 4529 flow [2024-06-27 19:20:12,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:20:12,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:20:12,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-27 19:20:12,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-27 19:20:12,629 INFO L175 Difference]: Start difference. First operand has 332 places, 284 transitions, 3873 flow. Second operand 10 states and 108 transitions. [2024-06-27 19:20:12,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 297 transitions, 4529 flow [2024-06-27 19:20:13,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 297 transitions, 4385 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-27 19:20:13,034 INFO L231 Difference]: Finished difference. Result has 335 places, 285 transitions, 3847 flow [2024-06-27 19:20:13,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3731, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3847, PETRI_PLACES=335, PETRI_TRANSITIONS=285} [2024-06-27 19:20:13,035 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 305 predicate places. [2024-06-27 19:20:13,035 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 285 transitions, 3847 flow [2024-06-27 19:20:13,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:13,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:13,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:20:13,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 19:20:13,035 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:20:13,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:13,035 INFO L85 PathProgramCache]: Analyzing trace with hash 289099100, now seen corresponding path program 20 times [2024-06-27 19:20:13,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:13,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883409928] [2024-06-27 19:20:13,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:13,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:13,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:13,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:13,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:13,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883409928] [2024-06-27 19:20:13,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883409928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:13,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:13,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:20:13,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294519615] [2024-06-27 19:20:13,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:13,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:20:13,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:13,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:20:13,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:20:13,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:20:13,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 285 transitions, 3847 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:13,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:13,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:20:13,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:14,319 INFO L124 PetriNetUnfolderBase]: 773/1399 cut-off events. [2024-06-27 19:20:14,319 INFO L125 PetriNetUnfolderBase]: For 93216/93216 co-relation queries the response was YES. [2024-06-27 19:20:14,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10126 conditions, 1399 events. 773/1399 cut-off events. For 93216/93216 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7701 event pairs, 118 based on Foata normal form. 2/1397 useless extension candidates. Maximal degree in co-relation 9969. Up to 1157 conditions per place. [2024-06-27 19:20:14,333 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 231 selfloop transitions, 67 changer transitions 0/300 dead transitions. [2024-06-27 19:20:14,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 300 transitions, 4523 flow [2024-06-27 19:20:14,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:20:14,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:20:14,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-27 19:20:14,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 19:20:14,334 INFO L175 Difference]: Start difference. First operand has 335 places, 285 transitions, 3847 flow. Second operand 9 states and 99 transitions. [2024-06-27 19:20:14,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 300 transitions, 4523 flow [2024-06-27 19:20:14,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 300 transitions, 4408 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-27 19:20:14,693 INFO L231 Difference]: Finished difference. Result has 336 places, 286 transitions, 3910 flow [2024-06-27 19:20:14,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3732, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3910, PETRI_PLACES=336, PETRI_TRANSITIONS=286} [2024-06-27 19:20:14,693 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 306 predicate places. [2024-06-27 19:20:14,693 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 286 transitions, 3910 flow [2024-06-27 19:20:14,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:14,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:14,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:20:14,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 19:20:14,694 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:20:14,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:14,694 INFO L85 PathProgramCache]: Analyzing trace with hash 289106044, now seen corresponding path program 5 times [2024-06-27 19:20:14,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:14,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945497967] [2024-06-27 19:20:14,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:14,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:14,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:15,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:15,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:15,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945497967] [2024-06-27 19:20:15,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945497967] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:15,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:15,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:20:15,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105488886] [2024-06-27 19:20:15,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:15,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:20:15,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:15,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:20:15,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:20:15,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:20:15,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 286 transitions, 3910 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:15,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:15,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:20:15,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:16,307 INFO L124 PetriNetUnfolderBase]: 779/1409 cut-off events. [2024-06-27 19:20:16,307 INFO L125 PetriNetUnfolderBase]: For 95895/95895 co-relation queries the response was YES. [2024-06-27 19:20:16,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10268 conditions, 1409 events. 779/1409 cut-off events. For 95895/95895 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 7747 event pairs, 116 based on Foata normal form. 2/1407 useless extension candidates. Maximal degree in co-relation 10113. Up to 1147 conditions per place. [2024-06-27 19:20:16,322 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 229 selfloop transitions, 73 changer transitions 0/304 dead transitions. [2024-06-27 19:20:16,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 304 transitions, 4638 flow [2024-06-27 19:20:16,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:20:16,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:20:16,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-27 19:20:16,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-27 19:20:16,323 INFO L175 Difference]: Start difference. First operand has 336 places, 286 transitions, 3910 flow. Second operand 10 states and 109 transitions. [2024-06-27 19:20:16,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 304 transitions, 4638 flow [2024-06-27 19:20:16,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 304 transitions, 4472 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-27 19:20:16,750 INFO L231 Difference]: Finished difference. Result has 339 places, 288 transitions, 3970 flow [2024-06-27 19:20:16,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3744, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3970, PETRI_PLACES=339, PETRI_TRANSITIONS=288} [2024-06-27 19:20:16,750 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 309 predicate places. [2024-06-27 19:20:16,750 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 288 transitions, 3970 flow [2024-06-27 19:20:16,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:16,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:16,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:20:16,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 19:20:16,751 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:20:16,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:16,751 INFO L85 PathProgramCache]: Analyzing trace with hash 289345364, now seen corresponding path program 2 times [2024-06-27 19:20:16,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:16,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728113316] [2024-06-27 19:20:16,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:16,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:16,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:18,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:18,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:18,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728113316] [2024-06-27 19:20:18,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728113316] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:18,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:18,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:20:18,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934117693] [2024-06-27 19:20:18,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:18,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:20:18,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:18,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:20:18,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:20:18,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:20:18,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 288 transitions, 3970 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:18,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:18,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:20:18,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:18,857 INFO L124 PetriNetUnfolderBase]: 803/1461 cut-off events. [2024-06-27 19:20:18,857 INFO L125 PetriNetUnfolderBase]: For 133162/133162 co-relation queries the response was YES. [2024-06-27 19:20:18,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10536 conditions, 1461 events. 803/1461 cut-off events. For 133162/133162 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 8116 event pairs, 140 based on Foata normal form. 14/1471 useless extension candidates. Maximal degree in co-relation 10380. Up to 1169 conditions per place. [2024-06-27 19:20:18,872 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 241 selfloop transitions, 59 changer transitions 9/311 dead transitions. [2024-06-27 19:20:18,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 311 transitions, 4750 flow [2024-06-27 19:20:18,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:20:18,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:20:18,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-27 19:20:18,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-27 19:20:18,873 INFO L175 Difference]: Start difference. First operand has 339 places, 288 transitions, 3970 flow. Second operand 11 states and 124 transitions. [2024-06-27 19:20:18,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 311 transitions, 4750 flow [2024-06-27 19:20:19,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 311 transitions, 4552 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-27 19:20:19,262 INFO L231 Difference]: Finished difference. Result has 343 places, 287 transitions, 3906 flow [2024-06-27 19:20:19,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3772, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3906, PETRI_PLACES=343, PETRI_TRANSITIONS=287} [2024-06-27 19:20:19,263 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 313 predicate places. [2024-06-27 19:20:19,263 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 287 transitions, 3906 flow [2024-06-27 19:20:19,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:19,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:19,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:20:19,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 19:20:19,264 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:20:19,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:19,264 INFO L85 PathProgramCache]: Analyzing trace with hash 116616154, now seen corresponding path program 6 times [2024-06-27 19:20:19,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:19,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693679936] [2024-06-27 19:20:19,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:19,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:19,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:20,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:20,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:20,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693679936] [2024-06-27 19:20:20,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693679936] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:20,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:20,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:20:20,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900533141] [2024-06-27 19:20:20,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:20,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:20:20,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:20,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:20:20,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:20:20,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:20:20,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 287 transitions, 3906 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:20,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:20,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:20:20,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:20,600 INFO L124 PetriNetUnfolderBase]: 797/1451 cut-off events. [2024-06-27 19:20:20,600 INFO L125 PetriNetUnfolderBase]: For 98266/98266 co-relation queries the response was YES. [2024-06-27 19:20:20,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10466 conditions, 1451 events. 797/1451 cut-off events. For 98266/98266 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 8069 event pairs, 154 based on Foata normal form. 2/1449 useless extension candidates. Maximal degree in co-relation 10309. Up to 1276 conditions per place. [2024-06-27 19:20:20,615 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 247 selfloop transitions, 56 changer transitions 0/305 dead transitions. [2024-06-27 19:20:20,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 305 transitions, 4652 flow [2024-06-27 19:20:20,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:20:20,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:20:20,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-27 19:20:20,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-27 19:20:20,615 INFO L175 Difference]: Start difference. First operand has 343 places, 287 transitions, 3906 flow. Second operand 9 states and 102 transitions. [2024-06-27 19:20:20,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 305 transitions, 4652 flow [2024-06-27 19:20:21,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 305 transitions, 4510 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-27 19:20:21,060 INFO L231 Difference]: Finished difference. Result has 343 places, 289 transitions, 3964 flow [2024-06-27 19:20:21,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3764, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3964, PETRI_PLACES=343, PETRI_TRANSITIONS=289} [2024-06-27 19:20:21,060 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 313 predicate places. [2024-06-27 19:20:21,060 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 289 transitions, 3964 flow [2024-06-27 19:20:21,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:21,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:21,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:20:21,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 19:20:21,060 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:20:21,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:21,061 INFO L85 PathProgramCache]: Analyzing trace with hash 289345054, now seen corresponding path program 7 times [2024-06-27 19:20:21,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:21,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899852918] [2024-06-27 19:20:21,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:21,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:21,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:22,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:22,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:22,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899852918] [2024-06-27 19:20:22,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899852918] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:22,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:22,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:20:22,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499142353] [2024-06-27 19:20:22,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:22,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:20:22,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:22,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:20:22,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:20:22,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:20:22,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 289 transitions, 3964 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:22,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:22,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:20:22,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:22,833 INFO L124 PetriNetUnfolderBase]: 808/1469 cut-off events. [2024-06-27 19:20:22,833 INFO L125 PetriNetUnfolderBase]: For 102606/102606 co-relation queries the response was YES. [2024-06-27 19:20:22,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10747 conditions, 1469 events. 808/1469 cut-off events. For 102606/102606 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 8197 event pairs, 118 based on Foata normal form. 2/1467 useless extension candidates. Maximal degree in co-relation 10589. Up to 1047 conditions per place. [2024-06-27 19:20:22,849 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 199 selfloop transitions, 111 changer transitions 0/312 dead transitions. [2024-06-27 19:20:22,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 312 transitions, 4964 flow [2024-06-27 19:20:22,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:20:22,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:20:22,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-27 19:20:22,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 19:20:22,850 INFO L175 Difference]: Start difference. First operand has 343 places, 289 transitions, 3964 flow. Second operand 11 states and 121 transitions. [2024-06-27 19:20:22,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 312 transitions, 4964 flow [2024-06-27 19:20:23,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 312 transitions, 4812 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-27 19:20:23,268 INFO L231 Difference]: Finished difference. Result has 347 places, 293 transitions, 4203 flow [2024-06-27 19:20:23,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3812, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4203, PETRI_PLACES=347, PETRI_TRANSITIONS=293} [2024-06-27 19:20:23,268 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 317 predicate places. [2024-06-27 19:20:23,268 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 293 transitions, 4203 flow [2024-06-27 19:20:23,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:23,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:23,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:20:23,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 19:20:23,269 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:20:23,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:23,269 INFO L85 PathProgramCache]: Analyzing trace with hash 282670010, now seen corresponding path program 21 times [2024-06-27 19:20:23,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:23,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003371322] [2024-06-27 19:20:23,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:23,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:23,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:24,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:24,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:24,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003371322] [2024-06-27 19:20:24,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003371322] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:24,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:24,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:20:24,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961711956] [2024-06-27 19:20:24,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:24,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:20:24,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:24,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:20:24,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:20:24,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:20:24,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 293 transitions, 4203 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:24,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:24,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:20:24,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:24,493 INFO L124 PetriNetUnfolderBase]: 812/1477 cut-off events. [2024-06-27 19:20:24,493 INFO L125 PetriNetUnfolderBase]: For 105114/105114 co-relation queries the response was YES. [2024-06-27 19:20:24,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11005 conditions, 1477 events. 812/1477 cut-off events. For 105114/105114 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 8259 event pairs, 130 based on Foata normal form. 2/1475 useless extension candidates. Maximal degree in co-relation 10846. Up to 1290 conditions per place. [2024-06-27 19:20:24,508 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 253 selfloop transitions, 53 changer transitions 0/308 dead transitions. [2024-06-27 19:20:24,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 308 transitions, 4895 flow [2024-06-27 19:20:24,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:20:24,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:20:24,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-27 19:20:24,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-27 19:20:24,509 INFO L175 Difference]: Start difference. First operand has 347 places, 293 transitions, 4203 flow. Second operand 9 states and 98 transitions. [2024-06-27 19:20:24,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 308 transitions, 4895 flow [2024-06-27 19:20:24,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 308 transitions, 4700 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-27 19:20:24,987 INFO L231 Difference]: Finished difference. Result has 349 places, 294 transitions, 4158 flow [2024-06-27 19:20:24,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4008, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4158, PETRI_PLACES=349, PETRI_TRANSITIONS=294} [2024-06-27 19:20:24,988 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 319 predicate places. [2024-06-27 19:20:24,988 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 294 transitions, 4158 flow [2024-06-27 19:20:24,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:24,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:24,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:20:24,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 19:20:24,989 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:20:24,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:24,989 INFO L85 PathProgramCache]: Analyzing trace with hash 282665360, now seen corresponding path program 22 times [2024-06-27 19:20:24,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:24,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161202355] [2024-06-27 19:20:24,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:24,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:24,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:25,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:25,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:25,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161202355] [2024-06-27 19:20:25,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161202355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:25,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:25,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:20:25,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820435493] [2024-06-27 19:20:25,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:25,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:20:25,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:25,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:20:25,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:20:25,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:20:25,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 294 transitions, 4158 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:25,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:25,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:20:25,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:26,272 INFO L124 PetriNetUnfolderBase]: 816/1485 cut-off events. [2024-06-27 19:20:26,272 INFO L125 PetriNetUnfolderBase]: For 106868/106868 co-relation queries the response was YES. [2024-06-27 19:20:26,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11062 conditions, 1485 events. 816/1485 cut-off events. For 106868/106868 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 8325 event pairs, 126 based on Foata normal form. 2/1483 useless extension candidates. Maximal degree in co-relation 10901. Up to 1298 conditions per place. [2024-06-27 19:20:26,285 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 256 selfloop transitions, 51 changer transitions 0/309 dead transitions. [2024-06-27 19:20:26,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 309 transitions, 4850 flow [2024-06-27 19:20:26,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:20:26,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:20:26,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-27 19:20:26,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-27 19:20:26,286 INFO L175 Difference]: Start difference. First operand has 349 places, 294 transitions, 4158 flow. Second operand 9 states and 97 transitions. [2024-06-27 19:20:26,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 309 transitions, 4850 flow [2024-06-27 19:20:26,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 309 transitions, 4710 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-27 19:20:26,757 INFO L231 Difference]: Finished difference. Result has 351 places, 295 transitions, 4166 flow [2024-06-27 19:20:26,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4020, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4166, PETRI_PLACES=351, PETRI_TRANSITIONS=295} [2024-06-27 19:20:26,757 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 321 predicate places. [2024-06-27 19:20:26,757 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 295 transitions, 4166 flow [2024-06-27 19:20:26,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:26,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:26,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:20:26,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 19:20:26,758 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:20:26,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:26,758 INFO L85 PathProgramCache]: Analyzing trace with hash 282849934, now seen corresponding path program 8 times [2024-06-27 19:20:26,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:26,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102677877] [2024-06-27 19:20:26,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:26,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:26,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:27,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:27,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:27,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102677877] [2024-06-27 19:20:27,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102677877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:27,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:27,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:20:27,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601684944] [2024-06-27 19:20:27,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:27,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:20:27,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:27,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:20:27,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:20:27,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:20:27,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 295 transitions, 4166 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:27,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:27,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:20:27,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:28,608 INFO L124 PetriNetUnfolderBase]: 812/1479 cut-off events. [2024-06-27 19:20:28,608 INFO L125 PetriNetUnfolderBase]: For 99497/99497 co-relation queries the response was YES. [2024-06-27 19:20:28,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10778 conditions, 1479 events. 812/1479 cut-off events. For 99497/99497 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 8300 event pairs, 130 based on Foata normal form. 2/1477 useless extension candidates. Maximal degree in co-relation 10616. Up to 1272 conditions per place. [2024-06-27 19:20:28,620 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 250 selfloop transitions, 59 changer transitions 0/311 dead transitions. [2024-06-27 19:20:28,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 311 transitions, 4840 flow [2024-06-27 19:20:28,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:20:28,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:20:28,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-27 19:20:28,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-27 19:20:28,623 INFO L175 Difference]: Start difference. First operand has 351 places, 295 transitions, 4166 flow. Second operand 10 states and 108 transitions. [2024-06-27 19:20:28,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 311 transitions, 4840 flow [2024-06-27 19:20:29,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 311 transitions, 4678 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-27 19:20:29,070 INFO L231 Difference]: Finished difference. Result has 354 places, 295 transitions, 4130 flow [2024-06-27 19:20:29,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4004, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4130, PETRI_PLACES=354, PETRI_TRANSITIONS=295} [2024-06-27 19:20:29,070 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 324 predicate places. [2024-06-27 19:20:29,071 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 295 transitions, 4130 flow [2024-06-27 19:20:29,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:29,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:29,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:20:29,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 19:20:29,071 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:20:29,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:29,071 INFO L85 PathProgramCache]: Analyzing trace with hash -393219096, now seen corresponding path program 9 times [2024-06-27 19:20:29,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:29,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130047317] [2024-06-27 19:20:29,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:29,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:29,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:29,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:29,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:29,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130047317] [2024-06-27 19:20:29,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130047317] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:29,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:29,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:20:29,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730115040] [2024-06-27 19:20:29,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:29,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:20:29,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:29,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:20:29,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:20:30,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:20:30,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 295 transitions, 4130 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:30,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:30,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:20:30,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:30,444 INFO L124 PetriNetUnfolderBase]: 818/1487 cut-off events. [2024-06-27 19:20:30,444 INFO L125 PetriNetUnfolderBase]: For 99192/99192 co-relation queries the response was YES. [2024-06-27 19:20:30,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10803 conditions, 1487 events. 818/1487 cut-off events. For 99192/99192 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 8339 event pairs, 286 based on Foata normal form. 2/1488 useless extension candidates. Maximal degree in co-relation 10640. Up to 1421 conditions per place. [2024-06-27 19:20:30,460 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 283 selfloop transitions, 27 changer transitions 0/312 dead transitions. [2024-06-27 19:20:30,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 312 transitions, 5025 flow [2024-06-27 19:20:30,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:20:30,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:20:30,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-27 19:20:30,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-27 19:20:30,461 INFO L175 Difference]: Start difference. First operand has 354 places, 295 transitions, 4130 flow. Second operand 10 states and 106 transitions. [2024-06-27 19:20:30,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 312 transitions, 5025 flow [2024-06-27 19:20:30,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 312 transitions, 4887 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 19:20:30,897 INFO L231 Difference]: Finished difference. Result has 357 places, 300 transitions, 4137 flow [2024-06-27 19:20:30,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3992, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4137, PETRI_PLACES=357, PETRI_TRANSITIONS=300} [2024-06-27 19:20:30,898 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 327 predicate places. [2024-06-27 19:20:30,898 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 300 transitions, 4137 flow [2024-06-27 19:20:30,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:30,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:30,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:20:30,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 19:20:30,898 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:20:30,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:30,898 INFO L85 PathProgramCache]: Analyzing trace with hash -393210416, now seen corresponding path program 3 times [2024-06-27 19:20:30,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:30,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695092500] [2024-06-27 19:20:30,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:30,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:30,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:32,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:32,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:32,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695092500] [2024-06-27 19:20:32,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695092500] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:32,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:32,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:20:32,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045395777] [2024-06-27 19:20:32,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:32,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:20:32,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:32,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:20:32,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:20:32,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:20:32,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 300 transitions, 4137 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:32,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:32,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:20:32,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:33,031 INFO L124 PetriNetUnfolderBase]: 822/1495 cut-off events. [2024-06-27 19:20:33,031 INFO L125 PetriNetUnfolderBase]: For 101589/101589 co-relation queries the response was YES. [2024-06-27 19:20:33,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10915 conditions, 1495 events. 822/1495 cut-off events. For 101589/101589 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 8401 event pairs, 287 based on Foata normal form. 2/1496 useless extension candidates. Maximal degree in co-relation 10750. Up to 1450 conditions per place. [2024-06-27 19:20:33,047 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 290 selfloop transitions, 21 changer transitions 0/313 dead transitions. [2024-06-27 19:20:33,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 313 transitions, 4821 flow [2024-06-27 19:20:33,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:20:33,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:20:33,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 112 transitions. [2024-06-27 19:20:33,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3010752688172043 [2024-06-27 19:20:33,048 INFO L175 Difference]: Start difference. First operand has 357 places, 300 transitions, 4137 flow. Second operand 12 states and 112 transitions. [2024-06-27 19:20:33,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 313 transitions, 4821 flow [2024-06-27 19:20:33,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 313 transitions, 4743 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-27 19:20:33,526 INFO L231 Difference]: Finished difference. Result has 364 places, 301 transitions, 4144 flow [2024-06-27 19:20:33,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4059, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4144, PETRI_PLACES=364, PETRI_TRANSITIONS=301} [2024-06-27 19:20:33,526 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 334 predicate places. [2024-06-27 19:20:33,526 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 301 transitions, 4144 flow [2024-06-27 19:20:33,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:33,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:33,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:20:33,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 19:20:33,526 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:20:33,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:33,527 INFO L85 PathProgramCache]: Analyzing trace with hash -2130188932, now seen corresponding path program 10 times [2024-06-27 19:20:33,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:33,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093418519] [2024-06-27 19:20:33,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:33,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:33,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:34,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:34,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:34,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093418519] [2024-06-27 19:20:34,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093418519] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:34,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:34,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:20:34,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291228159] [2024-06-27 19:20:34,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:34,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:20:34,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:34,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:20:34,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:20:34,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:20:34,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 301 transitions, 4144 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:34,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:34,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:20:34,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:34,952 INFO L124 PetriNetUnfolderBase]: 818/1489 cut-off events. [2024-06-27 19:20:34,952 INFO L125 PetriNetUnfolderBase]: For 96298/96298 co-relation queries the response was YES. [2024-06-27 19:20:34,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10657 conditions, 1489 events. 818/1489 cut-off events. For 96298/96298 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 8362 event pairs, 285 based on Foata normal form. 2/1490 useless extension candidates. Maximal degree in co-relation 10490. Up to 1426 conditions per place. [2024-06-27 19:20:34,968 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 282 selfloop transitions, 27 changer transitions 0/311 dead transitions. [2024-06-27 19:20:34,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 311 transitions, 4790 flow [2024-06-27 19:20:34,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:20:34,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:20:34,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-27 19:20:34,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32903225806451614 [2024-06-27 19:20:34,969 INFO L175 Difference]: Start difference. First operand has 364 places, 301 transitions, 4144 flow. Second operand 10 states and 102 transitions. [2024-06-27 19:20:34,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 311 transitions, 4790 flow [2024-06-27 19:20:35,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 311 transitions, 4653 flow, removed 32 selfloop flow, removed 12 redundant places. [2024-06-27 19:20:35,416 INFO L231 Difference]: Finished difference. Result has 362 places, 301 transitions, 4070 flow [2024-06-27 19:20:35,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4007, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4070, PETRI_PLACES=362, PETRI_TRANSITIONS=301} [2024-06-27 19:20:35,417 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 332 predicate places. [2024-06-27 19:20:35,417 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 301 transitions, 4070 flow [2024-06-27 19:20:35,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:35,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:35,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:20:35,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 19:20:35,418 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:20:35,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:35,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1241637680, now seen corresponding path program 4 times [2024-06-27 19:20:35,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:35,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483148452] [2024-06-27 19:20:35,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:35,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:35,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:36,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:36,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:36,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483148452] [2024-06-27 19:20:36,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483148452] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:36,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:36,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:20:36,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762956061] [2024-06-27 19:20:36,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:36,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:20:36,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:36,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:20:36,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:20:36,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:20:36,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 301 transitions, 4070 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:36,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:36,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:20:36,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:37,194 INFO L124 PetriNetUnfolderBase]: 822/1497 cut-off events. [2024-06-27 19:20:37,194 INFO L125 PetriNetUnfolderBase]: For 97746/97746 co-relation queries the response was YES. [2024-06-27 19:20:37,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10638 conditions, 1497 events. 822/1497 cut-off events. For 97746/97746 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 8424 event pairs, 171 based on Foata normal form. 2/1495 useless extension candidates. Maximal degree in co-relation 10473. Up to 1369 conditions per place. [2024-06-27 19:20:37,209 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 267 selfloop transitions, 43 changer transitions 0/312 dead transitions. [2024-06-27 19:20:37,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 312 transitions, 4750 flow [2024-06-27 19:20:37,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:20:37,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:20:37,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-27 19:20:37,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33225806451612905 [2024-06-27 19:20:37,210 INFO L175 Difference]: Start difference. First operand has 362 places, 301 transitions, 4070 flow. Second operand 10 states and 103 transitions. [2024-06-27 19:20:37,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 312 transitions, 4750 flow [2024-06-27 19:20:37,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 312 transitions, 4689 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 19:20:37,681 INFO L231 Difference]: Finished difference. Result has 363 places, 302 transitions, 4139 flow [2024-06-27 19:20:37,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4009, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4139, PETRI_PLACES=363, PETRI_TRANSITIONS=302} [2024-06-27 19:20:37,681 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 333 predicate places. [2024-06-27 19:20:37,681 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 302 transitions, 4139 flow [2024-06-27 19:20:37,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:37,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:37,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:20:37,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 19:20:37,682 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:20:37,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:37,682 INFO L85 PathProgramCache]: Analyzing trace with hash 149869130, now seen corresponding path program 5 times [2024-06-27 19:20:37,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:37,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331729282] [2024-06-27 19:20:37,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:37,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:37,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:38,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:38,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:38,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331729282] [2024-06-27 19:20:38,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331729282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:38,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:38,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:20:38,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773352650] [2024-06-27 19:20:38,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:38,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:20:38,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:38,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:20:38,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:20:38,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:20:38,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 302 transitions, 4139 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:38,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:38,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:20:38,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:39,198 INFO L124 PetriNetUnfolderBase]: 826/1505 cut-off events. [2024-06-27 19:20:39,198 INFO L125 PetriNetUnfolderBase]: For 101024/101024 co-relation queries the response was YES. [2024-06-27 19:20:39,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10794 conditions, 1505 events. 826/1505 cut-off events. For 101024/101024 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 8488 event pairs, 284 based on Foata normal form. 2/1506 useless extension candidates. Maximal degree in co-relation 10628. Up to 1446 conditions per place. [2024-06-27 19:20:39,215 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 292 selfloop transitions, 21 changer transitions 0/315 dead transitions. [2024-06-27 19:20:39,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 315 transitions, 4831 flow [2024-06-27 19:20:39,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:20:39,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:20:39,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 105 transitions. [2024-06-27 19:20:39,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30791788856304986 [2024-06-27 19:20:39,216 INFO L175 Difference]: Start difference. First operand has 363 places, 302 transitions, 4139 flow. Second operand 11 states and 105 transitions. [2024-06-27 19:20:39,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 315 transitions, 4831 flow [2024-06-27 19:20:39,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 315 transitions, 4711 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 19:20:39,676 INFO L231 Difference]: Finished difference. Result has 366 places, 303 transitions, 4107 flow [2024-06-27 19:20:39,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4019, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4107, PETRI_PLACES=366, PETRI_TRANSITIONS=303} [2024-06-27 19:20:39,676 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 336 predicate places. [2024-06-27 19:20:39,676 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 303 transitions, 4107 flow [2024-06-27 19:20:39,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:39,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:39,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:20:39,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 19:20:39,677 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:20:39,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:39,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1879432540, now seen corresponding path program 23 times [2024-06-27 19:20:39,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:39,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473319978] [2024-06-27 19:20:39,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:39,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:39,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:40,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:40,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:40,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473319978] [2024-06-27 19:20:40,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473319978] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:40,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:40,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:20:40,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375305521] [2024-06-27 19:20:40,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:40,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:20:40,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:40,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:20:40,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:20:40,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:20:40,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 303 transitions, 4107 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:40,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:40,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:20:40,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:41,053 INFO L124 PetriNetUnfolderBase]: 830/1513 cut-off events. [2024-06-27 19:20:41,053 INFO L125 PetriNetUnfolderBase]: For 102946/102946 co-relation queries the response was YES. [2024-06-27 19:20:41,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10792 conditions, 1513 events. 830/1513 cut-off events. For 102946/102946 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8573 event pairs, 285 based on Foata normal form. 2/1514 useless extension candidates. Maximal degree in co-relation 10625. Up to 1476 conditions per place. [2024-06-27 19:20:41,071 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 297 selfloop transitions, 15 changer transitions 0/314 dead transitions. [2024-06-27 19:20:41,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 314 transitions, 4795 flow [2024-06-27 19:20:41,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:20:41,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:20:41,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 89 transitions. [2024-06-27 19:20:41,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31899641577060933 [2024-06-27 19:20:41,072 INFO L175 Difference]: Start difference. First operand has 366 places, 303 transitions, 4107 flow. Second operand 9 states and 89 transitions. [2024-06-27 19:20:41,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 314 transitions, 4795 flow [2024-06-27 19:20:41,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 314 transitions, 4717 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-27 19:20:41,514 INFO L231 Difference]: Finished difference. Result has 366 places, 304 transitions, 4101 flow [2024-06-27 19:20:41,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4029, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4101, PETRI_PLACES=366, PETRI_TRANSITIONS=304} [2024-06-27 19:20:41,514 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 336 predicate places. [2024-06-27 19:20:41,514 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 304 transitions, 4101 flow [2024-06-27 19:20:41,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:41,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:41,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:20:41,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 19:20:41,515 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:20:41,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:41,515 INFO L85 PathProgramCache]: Analyzing trace with hash -678310286, now seen corresponding path program 6 times [2024-06-27 19:20:41,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:41,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319838012] [2024-06-27 19:20:41,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:41,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:41,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:42,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:42,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:42,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319838012] [2024-06-27 19:20:42,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319838012] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:42,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:42,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:20:42,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988722504] [2024-06-27 19:20:42,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:42,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:20:42,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:42,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:20:42,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:20:42,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:20:42,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 304 transitions, 4101 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:42,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:42,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:20:42,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:43,032 INFO L124 PetriNetUnfolderBase]: 834/1521 cut-off events. [2024-06-27 19:20:43,033 INFO L125 PetriNetUnfolderBase]: For 105193/105193 co-relation queries the response was YES. [2024-06-27 19:20:43,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10833 conditions, 1521 events. 834/1521 cut-off events. For 105193/105193 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 8620 event pairs, 286 based on Foata normal form. 2/1522 useless extension candidates. Maximal degree in co-relation 10665. Up to 1469 conditions per place. [2024-06-27 19:20:43,047 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 289 selfloop transitions, 25 changer transitions 0/316 dead transitions. [2024-06-27 19:20:43,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 316 transitions, 4795 flow [2024-06-27 19:20:43,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:20:43,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:20:43,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 108 transitions. [2024-06-27 19:20:43,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31671554252199413 [2024-06-27 19:20:43,048 INFO L175 Difference]: Start difference. First operand has 366 places, 304 transitions, 4101 flow. Second operand 11 states and 108 transitions. [2024-06-27 19:20:43,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 316 transitions, 4795 flow [2024-06-27 19:20:43,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 316 transitions, 4733 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-27 19:20:43,533 INFO L231 Difference]: Finished difference. Result has 370 places, 305 transitions, 4137 flow [2024-06-27 19:20:43,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4039, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4137, PETRI_PLACES=370, PETRI_TRANSITIONS=305} [2024-06-27 19:20:43,533 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 340 predicate places. [2024-06-27 19:20:43,534 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 305 transitions, 4137 flow [2024-06-27 19:20:43,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:43,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:43,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:20:43,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 19:20:43,534 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:20:43,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:43,534 INFO L85 PathProgramCache]: Analyzing trace with hash 486037168, now seen corresponding path program 24 times [2024-06-27 19:20:43,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:43,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104360059] [2024-06-27 19:20:43,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:43,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:43,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:44,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:44,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:44,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104360059] [2024-06-27 19:20:44,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104360059] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:44,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:44,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:20:44,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319842039] [2024-06-27 19:20:44,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:44,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:20:44,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:44,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:20:44,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:20:44,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:20:44,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 305 transitions, 4137 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:44,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:44,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:20:44,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:44,970 INFO L124 PetriNetUnfolderBase]: 838/1529 cut-off events. [2024-06-27 19:20:44,970 INFO L125 PetriNetUnfolderBase]: For 107038/107038 co-relation queries the response was YES. [2024-06-27 19:20:44,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10908 conditions, 1529 events. 838/1529 cut-off events. For 107038/107038 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 8684 event pairs, 141 based on Foata normal form. 2/1527 useless extension candidates. Maximal degree in co-relation 10739. Up to 1331 conditions per place. [2024-06-27 19:20:44,988 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 262 selfloop transitions, 54 changer transitions 0/318 dead transitions. [2024-06-27 19:20:44,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 318 transitions, 4851 flow [2024-06-27 19:20:44,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:20:44,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:20:44,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-27 19:20:44,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-27 19:20:44,989 INFO L175 Difference]: Start difference. First operand has 370 places, 305 transitions, 4137 flow. Second operand 9 states and 96 transitions. [2024-06-27 19:20:44,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 318 transitions, 4851 flow [2024-06-27 19:20:45,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 318 transitions, 4755 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-27 19:20:45,554 INFO L231 Difference]: Finished difference. Result has 370 places, 306 transitions, 4193 flow [2024-06-27 19:20:45,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4041, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4193, PETRI_PLACES=370, PETRI_TRANSITIONS=306} [2024-06-27 19:20:45,555 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 340 predicate places. [2024-06-27 19:20:45,555 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 306 transitions, 4193 flow [2024-06-27 19:20:45,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:45,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:45,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:20:45,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 19:20:45,555 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:20:45,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:45,555 INFO L85 PathProgramCache]: Analyzing trace with hash -678318966, now seen corresponding path program 11 times [2024-06-27 19:20:45,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:45,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328142711] [2024-06-27 19:20:45,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:45,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:45,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:46,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:46,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:46,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328142711] [2024-06-27 19:20:46,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328142711] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:46,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:46,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:20:46,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827322892] [2024-06-27 19:20:46,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:46,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:20:46,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:46,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:20:46,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:20:46,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:20:46,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 306 transitions, 4193 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:46,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:46,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:20:46,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:47,610 INFO L124 PetriNetUnfolderBase]: 844/1539 cut-off events. [2024-06-27 19:20:47,610 INFO L125 PetriNetUnfolderBase]: For 109385/109385 co-relation queries the response was YES. [2024-06-27 19:20:47,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11033 conditions, 1539 events. 844/1539 cut-off events. For 109385/109385 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 8738 event pairs, 134 based on Foata normal form. 2/1537 useless extension candidates. Maximal degree in co-relation 10862. Up to 889 conditions per place. [2024-06-27 19:20:47,626 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 181 selfloop transitions, 141 changer transitions 0/324 dead transitions. [2024-06-27 19:20:47,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 324 transitions, 5143 flow [2024-06-27 19:20:47,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:20:47,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:20:47,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-27 19:20:47,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-27 19:20:47,627 INFO L175 Difference]: Start difference. First operand has 370 places, 306 transitions, 4193 flow. Second operand 10 states and 116 transitions. [2024-06-27 19:20:47,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 324 transitions, 5143 flow [2024-06-27 19:20:48,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 324 transitions, 5001 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-27 19:20:48,204 INFO L231 Difference]: Finished difference. Result has 373 places, 308 transitions, 4392 flow [2024-06-27 19:20:48,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4051, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4392, PETRI_PLACES=373, PETRI_TRANSITIONS=308} [2024-06-27 19:20:48,204 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 343 predicate places. [2024-06-27 19:20:48,204 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 308 transitions, 4392 flow [2024-06-27 19:20:48,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:48,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:48,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:20:48,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 19:20:48,205 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:20:48,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:48,205 INFO L85 PathProgramCache]: Analyzing trace with hash -46571508, now seen corresponding path program 25 times [2024-06-27 19:20:48,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:48,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742250155] [2024-06-27 19:20:48,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:48,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:48,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:49,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:49,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:49,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742250155] [2024-06-27 19:20:49,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742250155] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:49,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:49,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:20:49,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112621385] [2024-06-27 19:20:49,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:49,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:20:49,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:49,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:20:49,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:20:49,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:20:49,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 308 transitions, 4392 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:49,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:49,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:20:49,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:49,619 INFO L124 PetriNetUnfolderBase]: 848/1547 cut-off events. [2024-06-27 19:20:49,619 INFO L125 PetriNetUnfolderBase]: For 112568/112568 co-relation queries the response was YES. [2024-06-27 19:20:49,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11312 conditions, 1547 events. 848/1547 cut-off events. For 112568/112568 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 8800 event pairs, 142 based on Foata normal form. 2/1545 useless extension candidates. Maximal degree in co-relation 11140. Up to 1349 conditions per place. [2024-06-27 19:20:49,638 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 266 selfloop transitions, 53 changer transitions 0/321 dead transitions. [2024-06-27 19:20:49,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 321 transitions, 5108 flow [2024-06-27 19:20:49,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:20:49,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:20:49,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-27 19:20:49,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34050179211469533 [2024-06-27 19:20:49,639 INFO L175 Difference]: Start difference. First operand has 373 places, 308 transitions, 4392 flow. Second operand 9 states and 95 transitions. [2024-06-27 19:20:49,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 321 transitions, 5108 flow [2024-06-27 19:20:50,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 321 transitions, 4888 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-27 19:20:50,269 INFO L231 Difference]: Finished difference. Result has 375 places, 309 transitions, 4324 flow [2024-06-27 19:20:50,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4172, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4324, PETRI_PLACES=375, PETRI_TRANSITIONS=309} [2024-06-27 19:20:50,269 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 345 predicate places. [2024-06-27 19:20:50,269 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 309 transitions, 4324 flow [2024-06-27 19:20:50,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:50,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:50,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:20:50,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 19:20:50,270 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:20:50,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:50,270 INFO L85 PathProgramCache]: Analyzing trace with hash -678310596, now seen corresponding path program 12 times [2024-06-27 19:20:50,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:50,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138561366] [2024-06-27 19:20:50,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:50,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:50,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:51,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:51,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:51,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138561366] [2024-06-27 19:20:51,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138561366] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:51,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:51,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:20:51,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995575234] [2024-06-27 19:20:51,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:51,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:20:51,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:51,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:20:51,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:20:51,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:20:51,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 309 transitions, 4324 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:51,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:51,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:20:51,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:52,154 INFO L124 PetriNetUnfolderBase]: 844/1541 cut-off events. [2024-06-27 19:20:52,154 INFO L125 PetriNetUnfolderBase]: For 105780/105780 co-relation queries the response was YES. [2024-06-27 19:20:52,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10900 conditions, 1541 events. 844/1541 cut-off events. For 105780/105780 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 8775 event pairs, 136 based on Foata normal form. 2/1539 useless extension candidates. Maximal degree in co-relation 10727. Up to 894 conditions per place. [2024-06-27 19:20:52,170 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 183 selfloop transitions, 142 changer transitions 0/327 dead transitions. [2024-06-27 19:20:52,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 327 transitions, 5240 flow [2024-06-27 19:20:52,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:20:52,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:20:52,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-27 19:20:52,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-27 19:20:52,171 INFO L175 Difference]: Start difference. First operand has 375 places, 309 transitions, 4324 flow. Second operand 11 states and 126 transitions. [2024-06-27 19:20:52,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 327 transitions, 5240 flow [2024-06-27 19:20:52,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 327 transitions, 5070 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-27 19:20:52,733 INFO L231 Difference]: Finished difference. Result has 379 places, 309 transitions, 4446 flow [2024-06-27 19:20:52,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4154, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4446, PETRI_PLACES=379, PETRI_TRANSITIONS=309} [2024-06-27 19:20:52,733 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 349 predicate places. [2024-06-27 19:20:52,733 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 309 transitions, 4446 flow [2024-06-27 19:20:52,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:52,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:52,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:20:52,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 19:20:52,734 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:20:52,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:52,734 INFO L85 PathProgramCache]: Analyzing trace with hash -40137768, now seen corresponding path program 26 times [2024-06-27 19:20:52,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:52,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337912553] [2024-06-27 19:20:52,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:52,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:52,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:53,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:53,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:53,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337912553] [2024-06-27 19:20:53,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337912553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:53,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:53,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:20:53,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257193194] [2024-06-27 19:20:53,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:53,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:20:53,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:53,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:20:53,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:20:53,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:20:53,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 309 transitions, 4446 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:53,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:53,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:20:53,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:54,028 INFO L124 PetriNetUnfolderBase]: 841/1536 cut-off events. [2024-06-27 19:20:54,028 INFO L125 PetriNetUnfolderBase]: For 98840/98840 co-relation queries the response was YES. [2024-06-27 19:20:54,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10818 conditions, 1536 events. 841/1536 cut-off events. For 98840/98840 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 8730 event pairs, 137 based on Foata normal form. 2/1534 useless extension candidates. Maximal degree in co-relation 10644. Up to 1329 conditions per place. [2024-06-27 19:20:54,047 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 263 selfloop transitions, 57 changer transitions 0/322 dead transitions. [2024-06-27 19:20:54,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 322 transitions, 5138 flow [2024-06-27 19:20:54,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:20:54,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:20:54,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-27 19:20:54,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 19:20:54,048 INFO L175 Difference]: Start difference. First operand has 379 places, 309 transitions, 4446 flow. Second operand 9 states and 99 transitions. [2024-06-27 19:20:54,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 322 transitions, 5138 flow [2024-06-27 19:20:54,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 322 transitions, 4886 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-27 19:20:54,657 INFO L231 Difference]: Finished difference. Result has 377 places, 309 transitions, 4312 flow [2024-06-27 19:20:54,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4194, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4312, PETRI_PLACES=377, PETRI_TRANSITIONS=309} [2024-06-27 19:20:54,658 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 347 predicate places. [2024-06-27 19:20:54,658 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 309 transitions, 4312 flow [2024-06-27 19:20:54,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:54,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:54,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:20:54,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 19:20:54,658 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:20:54,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:54,658 INFO L85 PathProgramCache]: Analyzing trace with hash -46386934, now seen corresponding path program 13 times [2024-06-27 19:20:54,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:54,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60751700] [2024-06-27 19:20:54,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:54,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:54,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:56,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:56,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:56,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60751700] [2024-06-27 19:20:56,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60751700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:56,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:56,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:20:56,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462785814] [2024-06-27 19:20:56,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:56,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:20:56,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:56,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:20:56,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:20:56,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:20:56,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 309 transitions, 4312 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:56,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:56,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:20:56,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:56,875 INFO L124 PetriNetUnfolderBase]: 847/1546 cut-off events. [2024-06-27 19:20:56,875 INFO L125 PetriNetUnfolderBase]: For 98644/98644 co-relation queries the response was YES. [2024-06-27 19:20:56,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10684 conditions, 1546 events. 847/1546 cut-off events. For 98644/98644 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 8784 event pairs, 142 based on Foata normal form. 2/1544 useless extension candidates. Maximal degree in co-relation 10511. Up to 1338 conditions per place. [2024-06-27 19:20:56,889 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 266 selfloop transitions, 57 changer transitions 0/325 dead transitions. [2024-06-27 19:20:56,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 325 transitions, 5066 flow [2024-06-27 19:20:56,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:20:56,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:20:56,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-27 19:20:56,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-27 19:20:56,890 INFO L175 Difference]: Start difference. First operand has 377 places, 309 transitions, 4312 flow. Second operand 10 states and 106 transitions. [2024-06-27 19:20:56,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 325 transitions, 5066 flow [2024-06-27 19:20:57,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 325 transitions, 4837 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-27 19:20:57,409 INFO L231 Difference]: Finished difference. Result has 379 places, 311 transitions, 4254 flow [2024-06-27 19:20:57,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4083, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4254, PETRI_PLACES=379, PETRI_TRANSITIONS=311} [2024-06-27 19:20:57,409 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 349 predicate places. [2024-06-27 19:20:57,409 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 311 transitions, 4254 flow [2024-06-27 19:20:57,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:57,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:57,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:20:57,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 19:20:57,410 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:20:57,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:57,410 INFO L85 PathProgramCache]: Analyzing trace with hash -39891504, now seen corresponding path program 7 times [2024-06-27 19:20:57,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:57,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117532097] [2024-06-27 19:20:57,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:57,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:57,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:58,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:58,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:58,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117532097] [2024-06-27 19:20:58,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117532097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:58,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:58,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:20:58,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777454965] [2024-06-27 19:20:58,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:58,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:20:58,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:58,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:20:58,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:20:58,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:20:58,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 311 transitions, 4254 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:58,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:58,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:20:58,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:59,325 INFO L124 PetriNetUnfolderBase]: 844/1541 cut-off events. [2024-06-27 19:20:59,325 INFO L125 PetriNetUnfolderBase]: For 90643/90643 co-relation queries the response was YES. [2024-06-27 19:20:59,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10290 conditions, 1541 events. 844/1541 cut-off events. For 90643/90643 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 8776 event pairs, 154 based on Foata normal form. 2/1539 useless extension candidates. Maximal degree in co-relation 10116. Up to 1380 conditions per place. [2024-06-27 19:20:59,343 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 262 selfloop transitions, 59 changer transitions 0/323 dead transitions. [2024-06-27 19:20:59,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 323 transitions, 4928 flow [2024-06-27 19:20:59,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:20:59,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:20:59,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-27 19:20:59,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3313782991202346 [2024-06-27 19:20:59,344 INFO L175 Difference]: Start difference. First operand has 379 places, 311 transitions, 4254 flow. Second operand 11 states and 113 transitions. [2024-06-27 19:20:59,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 323 transitions, 4928 flow [2024-06-27 19:20:59,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 323 transitions, 4785 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-27 19:20:59,786 INFO L231 Difference]: Finished difference. Result has 382 places, 311 transitions, 4233 flow [2024-06-27 19:20:59,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4111, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4233, PETRI_PLACES=382, PETRI_TRANSITIONS=311} [2024-06-27 19:20:59,786 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 352 predicate places. [2024-06-27 19:20:59,786 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 311 transitions, 4233 flow [2024-06-27 19:20:59,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:59,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:59,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:20:59,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 19:20:59,787 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:20:59,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:59,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1777109030, now seen corresponding path program 14 times [2024-06-27 19:20:59,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:59,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733372006] [2024-06-27 19:20:59,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:59,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:59,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:01,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:01,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:01,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733372006] [2024-06-27 19:21:01,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733372006] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:01,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:01,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:21:01,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454552970] [2024-06-27 19:21:01,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:01,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:21:01,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:01,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:21:01,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:21:01,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:21:01,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 311 transitions, 4233 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:01,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:01,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:21:01,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:01,775 INFO L124 PetriNetUnfolderBase]: 840/1535 cut-off events. [2024-06-27 19:21:01,776 INFO L125 PetriNetUnfolderBase]: For 82665/82665 co-relation queries the response was YES. [2024-06-27 19:21:01,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10017 conditions, 1535 events. 840/1535 cut-off events. For 82665/82665 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 8746 event pairs, 136 based on Foata normal form. 2/1533 useless extension candidates. Maximal degree in co-relation 9842. Up to 1280 conditions per place. [2024-06-27 19:21:01,793 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 256 selfloop transitions, 66 changer transitions 0/324 dead transitions. [2024-06-27 19:21:01,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 324 transitions, 4935 flow [2024-06-27 19:21:01,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:21:01,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:21:01,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-27 19:21:01,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-27 19:21:01,794 INFO L175 Difference]: Start difference. First operand has 382 places, 311 transitions, 4233 flow. Second operand 9 states and 105 transitions. [2024-06-27 19:21:01,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 324 transitions, 4935 flow [2024-06-27 19:21:02,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 324 transitions, 4712 flow, removed 35 selfloop flow, removed 11 redundant places. [2024-06-27 19:21:02,221 INFO L231 Difference]: Finished difference. Result has 380 places, 311 transitions, 4148 flow [2024-06-27 19:21:02,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4010, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4148, PETRI_PLACES=380, PETRI_TRANSITIONS=311} [2024-06-27 19:21:02,222 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 350 predicate places. [2024-06-27 19:21:02,222 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 311 transitions, 4148 flow [2024-06-27 19:21:02,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:02,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:02,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:21:02,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 19:21:02,222 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:21:02,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:02,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1050955992, now seen corresponding path program 1 times [2024-06-27 19:21:02,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:02,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435385013] [2024-06-27 19:21:02,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:02,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:02,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:03,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:03,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:03,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435385013] [2024-06-27 19:21:03,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435385013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:03,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:03,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:21:03,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846072686] [2024-06-27 19:21:03,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:03,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:21:03,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:03,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:21:03,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:21:03,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:21:03,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 311 transitions, 4148 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:03,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:03,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:21:03,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:03,648 INFO L124 PetriNetUnfolderBase]: 865/1586 cut-off events. [2024-06-27 19:21:03,648 INFO L125 PetriNetUnfolderBase]: For 83714/83714 co-relation queries the response was YES. [2024-06-27 19:21:03,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10102 conditions, 1586 events. 865/1586 cut-off events. For 83714/83714 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 9176 event pairs, 170 based on Foata normal form. 2/1586 useless extension candidates. Maximal degree in co-relation 9928. Up to 1408 conditions per place. [2024-06-27 19:21:03,666 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 298 selfloop transitions, 36 changer transitions 0/336 dead transitions. [2024-06-27 19:21:03,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 336 transitions, 4930 flow [2024-06-27 19:21:03,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:21:03,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:21:03,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-27 19:21:03,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-27 19:21:03,667 INFO L175 Difference]: Start difference. First operand has 380 places, 311 transitions, 4148 flow. Second operand 11 states and 116 transitions. [2024-06-27 19:21:03,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 336 transitions, 4930 flow [2024-06-27 19:21:04,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 336 transitions, 4779 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 19:21:04,093 INFO L231 Difference]: Finished difference. Result has 386 places, 317 transitions, 4167 flow [2024-06-27 19:21:04,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3997, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4167, PETRI_PLACES=386, PETRI_TRANSITIONS=317} [2024-06-27 19:21:04,093 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 356 predicate places. [2024-06-27 19:21:04,093 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 317 transitions, 4167 flow [2024-06-27 19:21:04,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:04,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:04,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:21:04,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 19:21:04,094 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:21:04,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:04,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1167123442, now seen corresponding path program 2 times [2024-06-27 19:21:04,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:04,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380968917] [2024-06-27 19:21:04,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:04,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:04,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:05,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:05,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:05,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380968917] [2024-06-27 19:21:05,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380968917] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:05,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:05,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:21:05,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928358193] [2024-06-27 19:21:05,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:05,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:21:05,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:05,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:21:05,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:21:05,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:21:05,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 317 transitions, 4167 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:05,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:05,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:21:05,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:05,717 INFO L124 PetriNetUnfolderBase]: 869/1594 cut-off events. [2024-06-27 19:21:05,717 INFO L125 PetriNetUnfolderBase]: For 84445/84445 co-relation queries the response was YES. [2024-06-27 19:21:05,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10138 conditions, 1594 events. 869/1594 cut-off events. For 84445/84445 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 9265 event pairs, 151 based on Foata normal form. 2/1595 useless extension candidates. Maximal degree in co-relation 9960. Up to 1368 conditions per place. [2024-06-27 19:21:05,736 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 295 selfloop transitions, 40 changer transitions 0/337 dead transitions. [2024-06-27 19:21:05,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 337 transitions, 4907 flow [2024-06-27 19:21:05,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:21:05,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:21:05,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-27 19:21:05,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-27 19:21:05,737 INFO L175 Difference]: Start difference. First operand has 386 places, 317 transitions, 4167 flow. Second operand 11 states and 116 transitions. [2024-06-27 19:21:05,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 337 transitions, 4907 flow [2024-06-27 19:21:06,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 337 transitions, 4829 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-27 19:21:06,172 INFO L231 Difference]: Finished difference. Result has 392 places, 318 transitions, 4201 flow [2024-06-27 19:21:06,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4089, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4201, PETRI_PLACES=392, PETRI_TRANSITIONS=318} [2024-06-27 19:21:06,172 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 362 predicate places. [2024-06-27 19:21:06,172 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 318 transitions, 4201 flow [2024-06-27 19:21:06,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:06,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:06,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:21:06,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-27 19:21:06,172 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:21:06,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:06,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1168285524, now seen corresponding path program 3 times [2024-06-27 19:21:06,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:06,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577742348] [2024-06-27 19:21:06,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:06,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:06,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:07,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:07,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:07,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577742348] [2024-06-27 19:21:07,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577742348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:07,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:07,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:21:07,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945835650] [2024-06-27 19:21:07,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:07,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:21:07,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:07,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:21:07,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:21:07,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:21:07,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 318 transitions, 4201 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:07,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:07,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:21:07,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:08,572 INFO L124 PetriNetUnfolderBase]: 907/1669 cut-off events. [2024-06-27 19:21:08,572 INFO L125 PetriNetUnfolderBase]: For 137213/137213 co-relation queries the response was YES. [2024-06-27 19:21:08,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11703 conditions, 1669 events. 907/1669 cut-off events. For 137213/137213 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 9700 event pairs, 174 based on Foata normal form. 2/1670 useless extension candidates. Maximal degree in co-relation 11524. Up to 1374 conditions per place. [2024-06-27 19:21:08,593 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 290 selfloop transitions, 52 changer transitions 1/345 dead transitions. [2024-06-27 19:21:08,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 345 transitions, 5497 flow [2024-06-27 19:21:08,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:21:08,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:21:08,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-27 19:21:08,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-27 19:21:08,594 INFO L175 Difference]: Start difference. First operand has 392 places, 318 transitions, 4201 flow. Second operand 11 states and 130 transitions. [2024-06-27 19:21:08,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 345 transitions, 5497 flow [2024-06-27 19:21:09,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 345 transitions, 5389 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-27 19:21:09,339 INFO L231 Difference]: Finished difference. Result has 395 places, 321 transitions, 4311 flow [2024-06-27 19:21:09,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4101, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4311, PETRI_PLACES=395, PETRI_TRANSITIONS=321} [2024-06-27 19:21:09,339 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 365 predicate places. [2024-06-27 19:21:09,339 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 321 transitions, 4311 flow [2024-06-27 19:21:09,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:09,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:09,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:21:09,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-27 19:21:09,339 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:21:09,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:09,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1168279944, now seen corresponding path program 4 times [2024-06-27 19:21:09,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:09,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994121042] [2024-06-27 19:21:09,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:09,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:09,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:10,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:10,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:10,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994121042] [2024-06-27 19:21:10,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994121042] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:10,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:10,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:21:10,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291496366] [2024-06-27 19:21:10,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:10,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:21:10,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:10,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:21:10,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:21:10,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:21:10,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 321 transitions, 4311 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:10,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:10,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:21:10,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:11,162 INFO L124 PetriNetUnfolderBase]: 904/1664 cut-off events. [2024-06-27 19:21:11,162 INFO L125 PetriNetUnfolderBase]: For 128715/128715 co-relation queries the response was YES. [2024-06-27 19:21:11,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11485 conditions, 1664 events. 904/1664 cut-off events. For 128715/128715 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 9687 event pairs, 174 based on Foata normal form. 2/1665 useless extension candidates. Maximal degree in co-relation 11304. Up to 1503 conditions per place. [2024-06-27 19:21:11,185 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 286 selfloop transitions, 50 changer transitions 1/339 dead transitions. [2024-06-27 19:21:11,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 339 transitions, 5069 flow [2024-06-27 19:21:11,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:21:11,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:21:11,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-27 19:21:11,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-27 19:21:11,187 INFO L175 Difference]: Start difference. First operand has 395 places, 321 transitions, 4311 flow. Second operand 11 states and 122 transitions. [2024-06-27 19:21:11,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 339 transitions, 5069 flow [2024-06-27 19:21:11,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 339 transitions, 4951 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 19:21:11,921 INFO L231 Difference]: Finished difference. Result has 398 places, 322 transitions, 4325 flow [2024-06-27 19:21:11,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4193, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4325, PETRI_PLACES=398, PETRI_TRANSITIONS=322} [2024-06-27 19:21:11,921 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 368 predicate places. [2024-06-27 19:21:11,921 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 322 transitions, 4325 flow [2024-06-27 19:21:11,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:11,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:11,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:21:11,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-27 19:21:11,921 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:21:11,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:11,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1168429674, now seen corresponding path program 5 times [2024-06-27 19:21:11,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:11,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882440890] [2024-06-27 19:21:11,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:11,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:11,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:12,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:12,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:12,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882440890] [2024-06-27 19:21:12,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882440890] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:12,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:12,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:21:12,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491504772] [2024-06-27 19:21:12,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:12,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:21:12,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:12,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:21:12,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:21:13,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:21:13,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 322 transitions, 4325 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:13,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:13,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:21:13,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:13,652 INFO L124 PetriNetUnfolderBase]: 886/1626 cut-off events. [2024-06-27 19:21:13,653 INFO L125 PetriNetUnfolderBase]: For 93470/93470 co-relation queries the response was YES. [2024-06-27 19:21:13,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10550 conditions, 1626 events. 886/1626 cut-off events. For 93470/93470 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 9479 event pairs, 157 based on Foata normal form. 2/1627 useless extension candidates. Maximal degree in co-relation 10368. Up to 1459 conditions per place. [2024-06-27 19:21:13,672 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 293 selfloop transitions, 45 changer transitions 0/340 dead transitions. [2024-06-27 19:21:13,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 340 transitions, 5075 flow [2024-06-27 19:21:13,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:21:13,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:21:13,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-27 19:21:13,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-27 19:21:13,674 INFO L175 Difference]: Start difference. First operand has 398 places, 322 transitions, 4325 flow. Second operand 11 states and 118 transitions. [2024-06-27 19:21:13,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 340 transitions, 5075 flow [2024-06-27 19:21:14,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 340 transitions, 4953 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-27 19:21:14,138 INFO L231 Difference]: Finished difference. Result has 400 places, 323 transitions, 4328 flow [2024-06-27 19:21:14,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4203, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4328, PETRI_PLACES=400, PETRI_TRANSITIONS=323} [2024-06-27 19:21:14,138 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 370 predicate places. [2024-06-27 19:21:14,138 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 323 transitions, 4328 flow [2024-06-27 19:21:14,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:14,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:14,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:21:14,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-27 19:21:14,139 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:21:14,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:14,139 INFO L85 PathProgramCache]: Analyzing trace with hash -784890048, now seen corresponding path program 6 times [2024-06-27 19:21:14,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:14,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158101937] [2024-06-27 19:21:14,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:14,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:14,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:14,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:14,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:14,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158101937] [2024-06-27 19:21:14,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158101937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:14,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:14,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:21:14,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380360571] [2024-06-27 19:21:14,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:14,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:21:14,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:14,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:21:14,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:21:15,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:21:15,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 323 transitions, 4328 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:15,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:15,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:21:15,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:15,645 INFO L124 PetriNetUnfolderBase]: 898/1650 cut-off events. [2024-06-27 19:21:15,646 INFO L125 PetriNetUnfolderBase]: For 95647/95647 co-relation queries the response was YES. [2024-06-27 19:21:15,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10644 conditions, 1650 events. 898/1650 cut-off events. For 95647/95647 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 9676 event pairs, 179 based on Foata normal form. 2/1650 useless extension candidates. Maximal degree in co-relation 10461. Up to 1510 conditions per place. [2024-06-27 19:21:15,666 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 303 selfloop transitions, 38 changer transitions 0/343 dead transitions. [2024-06-27 19:21:15,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 343 transitions, 5093 flow [2024-06-27 19:21:15,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:21:15,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:21:15,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-27 19:21:15,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-27 19:21:15,667 INFO L175 Difference]: Start difference. First operand has 400 places, 323 transitions, 4328 flow. Second operand 11 states and 116 transitions. [2024-06-27 19:21:15,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 343 transitions, 5093 flow [2024-06-27 19:21:16,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 343 transitions, 4980 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-27 19:21:16,236 INFO L231 Difference]: Finished difference. Result has 404 places, 326 transitions, 4348 flow [2024-06-27 19:21:16,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4215, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4348, PETRI_PLACES=404, PETRI_TRANSITIONS=326} [2024-06-27 19:21:16,237 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 374 predicate places. [2024-06-27 19:21:16,237 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 326 transitions, 4348 flow [2024-06-27 19:21:16,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:16,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:16,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:21:16,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-27 19:21:16,237 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:21:16,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:16,237 INFO L85 PathProgramCache]: Analyzing trace with hash 587954766, now seen corresponding path program 7 times [2024-06-27 19:21:16,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:16,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339164521] [2024-06-27 19:21:16,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:16,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:16,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:17,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:17,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:17,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339164521] [2024-06-27 19:21:17,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339164521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:17,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:17,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:21:17,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019456162] [2024-06-27 19:21:17,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:17,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:21:17,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:17,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:21:17,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:21:17,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:21:17,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 326 transitions, 4348 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:17,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:17,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:21:17,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:17,955 INFO L124 PetriNetUnfolderBase]: 902/1658 cut-off events. [2024-06-27 19:21:17,955 INFO L125 PetriNetUnfolderBase]: For 97318/97318 co-relation queries the response was YES. [2024-06-27 19:21:17,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10704 conditions, 1658 events. 902/1658 cut-off events. For 97318/97318 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 9752 event pairs, 171 based on Foata normal form. 2/1659 useless extension candidates. Maximal degree in co-relation 10518. Up to 1488 conditions per place. [2024-06-27 19:21:17,975 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 301 selfloop transitions, 41 changer transitions 0/344 dead transitions. [2024-06-27 19:21:17,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 344 transitions, 5104 flow [2024-06-27 19:21:17,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:21:17,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:21:17,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-27 19:21:17,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-27 19:21:17,976 INFO L175 Difference]: Start difference. First operand has 404 places, 326 transitions, 4348 flow. Second operand 11 states and 116 transitions. [2024-06-27 19:21:17,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 344 transitions, 5104 flow [2024-06-27 19:21:18,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 344 transitions, 5008 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-27 19:21:18,513 INFO L231 Difference]: Finished difference. Result has 409 places, 327 transitions, 4374 flow [2024-06-27 19:21:18,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4252, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4374, PETRI_PLACES=409, PETRI_TRANSITIONS=327} [2024-06-27 19:21:18,514 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 379 predicate places. [2024-06-27 19:21:18,514 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 327 transitions, 4374 flow [2024-06-27 19:21:18,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:18,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:18,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:21:18,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-27 19:21:18,514 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:21:18,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:18,515 INFO L85 PathProgramCache]: Analyzing trace with hash -781165181, now seen corresponding path program 1 times [2024-06-27 19:21:18,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:18,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504368965] [2024-06-27 19:21:18,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:18,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:18,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:20,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:20,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:20,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504368965] [2024-06-27 19:21:20,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504368965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:20,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:20,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:21:20,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128940956] [2024-06-27 19:21:20,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:20,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:21:20,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:20,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:21:20,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:21:20,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:21:20,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 327 transitions, 4374 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:20,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:20,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:21:20,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:21,207 INFO L124 PetriNetUnfolderBase]: 900/1655 cut-off events. [2024-06-27 19:21:21,208 INFO L125 PetriNetUnfolderBase]: For 88267/88267 co-relation queries the response was YES. [2024-06-27 19:21:21,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10569 conditions, 1655 events. 900/1655 cut-off events. For 88267/88267 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 9725 event pairs, 172 based on Foata normal form. 1/1655 useless extension candidates. Maximal degree in co-relation 10382. Up to 1486 conditions per place. [2024-06-27 19:21:21,226 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 287 selfloop transitions, 53 changer transitions 2/344 dead transitions. [2024-06-27 19:21:21,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 344 transitions, 5122 flow [2024-06-27 19:21:21,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:21:21,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:21:21,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-27 19:21:21,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-27 19:21:21,228 INFO L175 Difference]: Start difference. First operand has 409 places, 327 transitions, 4374 flow. Second operand 11 states and 124 transitions. [2024-06-27 19:21:21,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 344 transitions, 5122 flow [2024-06-27 19:21:21,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 344 transitions, 4992 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-27 19:21:21,801 INFO L231 Difference]: Finished difference. Result has 411 places, 327 transitions, 4358 flow [2024-06-27 19:21:21,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4244, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4358, PETRI_PLACES=411, PETRI_TRANSITIONS=327} [2024-06-27 19:21:21,801 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 381 predicate places. [2024-06-27 19:21:21,801 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 327 transitions, 4358 flow [2024-06-27 19:21:21,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:21,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:21,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:21:21,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-27 19:21:21,802 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:21:21,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:21,802 INFO L85 PathProgramCache]: Analyzing trace with hash -883919764, now seen corresponding path program 8 times [2024-06-27 19:21:21,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:21,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985341479] [2024-06-27 19:21:21,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:21,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:21,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:22,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:22,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:22,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985341479] [2024-06-27 19:21:22,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985341479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:22,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:22,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:21:22,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497310829] [2024-06-27 19:21:22,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:22,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:21:22,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:22,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:21:22,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:21:22,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:21:22,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 327 transitions, 4358 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:22,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:22,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:21:22,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:23,628 INFO L124 PetriNetUnfolderBase]: 904/1663 cut-off events. [2024-06-27 19:21:23,628 INFO L125 PetriNetUnfolderBase]: For 93784/93784 co-relation queries the response was YES. [2024-06-27 19:21:23,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10608 conditions, 1663 events. 904/1663 cut-off events. For 93784/93784 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 9774 event pairs, 117 based on Foata normal form. 2/1664 useless extension candidates. Maximal degree in co-relation 10420. Up to 1408 conditions per place. [2024-06-27 19:21:23,649 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 307 selfloop transitions, 38 changer transitions 0/347 dead transitions. [2024-06-27 19:21:23,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 347 transitions, 5124 flow [2024-06-27 19:21:23,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:21:23,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:21:23,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-06-27 19:21:23,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-27 19:21:23,650 INFO L175 Difference]: Start difference. First operand has 411 places, 327 transitions, 4358 flow. Second operand 11 states and 110 transitions. [2024-06-27 19:21:23,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 347 transitions, 5124 flow [2024-06-27 19:21:24,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 347 transitions, 5010 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-27 19:21:24,181 INFO L231 Difference]: Finished difference. Result has 413 places, 328 transitions, 4358 flow [2024-06-27 19:21:24,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4244, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4358, PETRI_PLACES=413, PETRI_TRANSITIONS=328} [2024-06-27 19:21:24,181 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 383 predicate places. [2024-06-27 19:21:24,181 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 328 transitions, 4358 flow [2024-06-27 19:21:24,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:24,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:24,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:21:24,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-27 19:21:24,182 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:21:24,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:24,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1978098586, now seen corresponding path program 9 times [2024-06-27 19:21:24,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:24,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938342750] [2024-06-27 19:21:24,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:24,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:24,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:25,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:25,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:25,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938342750] [2024-06-27 19:21:25,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938342750] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:25,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:25,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:21:25,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971809680] [2024-06-27 19:21:25,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:25,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:21:25,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:25,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:21:25,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:21:25,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:21:25,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 328 transitions, 4358 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:25,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:25,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:21:25,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:25,869 INFO L124 PetriNetUnfolderBase]: 908/1671 cut-off events. [2024-06-27 19:21:25,869 INFO L125 PetriNetUnfolderBase]: For 95947/95947 co-relation queries the response was YES. [2024-06-27 19:21:25,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10692 conditions, 1671 events. 908/1671 cut-off events. For 95947/95947 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 9876 event pairs, 183 based on Foata normal form. 2/1671 useless extension candidates. Maximal degree in co-relation 10503. Up to 1521 conditions per place. [2024-06-27 19:21:25,892 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 309 selfloop transitions, 37 changer transitions 0/348 dead transitions. [2024-06-27 19:21:25,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 348 transitions, 5132 flow [2024-06-27 19:21:25,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:21:25,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:21:25,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-27 19:21:25,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-27 19:21:25,893 INFO L175 Difference]: Start difference. First operand has 413 places, 328 transitions, 4358 flow. Second operand 11 states and 119 transitions. [2024-06-27 19:21:25,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 348 transitions, 5132 flow [2024-06-27 19:21:26,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 348 transitions, 5028 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-27 19:21:26,604 INFO L231 Difference]: Finished difference. Result has 415 places, 329 transitions, 4368 flow [2024-06-27 19:21:26,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4254, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4368, PETRI_PLACES=415, PETRI_TRANSITIONS=329} [2024-06-27 19:21:26,604 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 385 predicate places. [2024-06-27 19:21:26,604 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 329 transitions, 4368 flow [2024-06-27 19:21:26,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:26,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:26,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:21:26,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-27 19:21:26,605 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:21:26,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:26,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1974379516, now seen corresponding path program 10 times [2024-06-27 19:21:26,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:26,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558950224] [2024-06-27 19:21:26,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:26,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:26,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:28,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:28,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:28,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558950224] [2024-06-27 19:21:28,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558950224] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:28,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:28,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:21:28,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328882303] [2024-06-27 19:21:28,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:28,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:21:28,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:28,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:21:28,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:21:28,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:21:28,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 329 transitions, 4368 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:28,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:28,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:21:28,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:28,919 INFO L124 PetriNetUnfolderBase]: 912/1679 cut-off events. [2024-06-27 19:21:28,919 INFO L125 PetriNetUnfolderBase]: For 97624/97624 co-relation queries the response was YES. [2024-06-27 19:21:28,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10731 conditions, 1679 events. 912/1679 cut-off events. For 97624/97624 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 9951 event pairs, 178 based on Foata normal form. 2/1680 useless extension candidates. Maximal degree in co-relation 10541. Up to 1533 conditions per place. [2024-06-27 19:21:28,940 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 306 selfloop transitions, 40 changer transitions 0/348 dead transitions. [2024-06-27 19:21:28,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 348 transitions, 5152 flow [2024-06-27 19:21:28,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:21:28,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:21:28,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-27 19:21:28,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-27 19:21:28,942 INFO L175 Difference]: Start difference. First operand has 415 places, 329 transitions, 4368 flow. Second operand 11 states and 119 transitions. [2024-06-27 19:21:28,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 348 transitions, 5152 flow [2024-06-27 19:21:29,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 348 transitions, 5048 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-27 19:21:29,552 INFO L231 Difference]: Finished difference. Result has 417 places, 330 transitions, 4386 flow [2024-06-27 19:21:29,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4264, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4386, PETRI_PLACES=417, PETRI_TRANSITIONS=330} [2024-06-27 19:21:29,552 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 387 predicate places. [2024-06-27 19:21:29,552 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 330 transitions, 4386 flow [2024-06-27 19:21:29,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:29,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:29,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:21:29,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-27 19:21:29,553 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:21:29,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:29,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1651215066, now seen corresponding path program 11 times [2024-06-27 19:21:29,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:29,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119568646] [2024-06-27 19:21:29,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:29,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:29,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:30,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:30,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:30,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119568646] [2024-06-27 19:21:30,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119568646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:30,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:30,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:21:30,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964737001] [2024-06-27 19:21:30,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:30,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:21:30,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:30,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:21:30,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:21:30,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:21:30,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 330 transitions, 4386 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:30,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:30,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:21:30,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:31,405 INFO L124 PetriNetUnfolderBase]: 916/1687 cut-off events. [2024-06-27 19:21:31,406 INFO L125 PetriNetUnfolderBase]: For 99511/99511 co-relation queries the response was YES. [2024-06-27 19:21:31,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10784 conditions, 1687 events. 916/1687 cut-off events. For 99511/99511 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 10012 event pairs, 182 based on Foata normal form. 2/1688 useless extension candidates. Maximal degree in co-relation 10593. Up to 1535 conditions per place. [2024-06-27 19:21:31,428 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 302 selfloop transitions, 44 changer transitions 0/348 dead transitions. [2024-06-27 19:21:31,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 348 transitions, 5170 flow [2024-06-27 19:21:31,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:21:31,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:21:31,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-27 19:21:31,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-27 19:21:31,429 INFO L175 Difference]: Start difference. First operand has 417 places, 330 transitions, 4386 flow. Second operand 10 states and 115 transitions. [2024-06-27 19:21:31,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 348 transitions, 5170 flow [2024-06-27 19:21:31,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 348 transitions, 5065 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-27 19:21:31,997 INFO L231 Difference]: Finished difference. Result has 419 places, 331 transitions, 4415 flow [2024-06-27 19:21:31,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4281, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4415, PETRI_PLACES=419, PETRI_TRANSITIONS=331} [2024-06-27 19:21:31,998 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 389 predicate places. [2024-06-27 19:21:31,998 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 331 transitions, 4415 flow [2024-06-27 19:21:31,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:31,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:31,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:21:31,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-27 19:21:31,999 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:21:31,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:31,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1651215283, now seen corresponding path program 2 times [2024-06-27 19:21:31,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:31,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974343027] [2024-06-27 19:21:32,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:32,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:32,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:33,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:33,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:33,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974343027] [2024-06-27 19:21:33,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974343027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:33,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:33,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:21:33,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825069439] [2024-06-27 19:21:33,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:33,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:21:33,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:33,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:21:33,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:21:33,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:21:33,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 331 transitions, 4415 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:33,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:33,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:21:33,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:34,015 INFO L124 PetriNetUnfolderBase]: 919/1692 cut-off events. [2024-06-27 19:21:34,015 INFO L125 PetriNetUnfolderBase]: For 95860/95860 co-relation queries the response was YES. [2024-06-27 19:21:34,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10845 conditions, 1692 events. 919/1692 cut-off events. For 95860/95860 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 10027 event pairs, 182 based on Foata normal form. 1/1692 useless extension candidates. Maximal degree in co-relation 10654. Up to 1537 conditions per place. [2024-06-27 19:21:34,036 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 301 selfloop transitions, 47 changer transitions 0/350 dead transitions. [2024-06-27 19:21:34,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 350 transitions, 5255 flow [2024-06-27 19:21:34,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:21:34,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:21:34,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-27 19:21:34,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-27 19:21:34,037 INFO L175 Difference]: Start difference. First operand has 419 places, 331 transitions, 4415 flow. Second operand 10 states and 116 transitions. [2024-06-27 19:21:34,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 350 transitions, 5255 flow [2024-06-27 19:21:34,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 350 transitions, 5135 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 19:21:34,605 INFO L231 Difference]: Finished difference. Result has 421 places, 333 transitions, 4486 flow [2024-06-27 19:21:34,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4295, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4486, PETRI_PLACES=421, PETRI_TRANSITIONS=333} [2024-06-27 19:21:34,605 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 391 predicate places. [2024-06-27 19:21:34,605 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 333 transitions, 4486 flow [2024-06-27 19:21:34,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:34,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:34,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:21:34,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-27 19:21:34,606 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:21:34,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:34,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1651065336, now seen corresponding path program 12 times [2024-06-27 19:21:34,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:34,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476449969] [2024-06-27 19:21:34,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:34,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:34,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:35,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:35,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:35,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476449969] [2024-06-27 19:21:35,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476449969] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:35,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:35,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:21:35,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982181893] [2024-06-27 19:21:35,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:35,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:21:35,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:35,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:21:35,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:21:35,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:21:35,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 333 transitions, 4486 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:35,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:35,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:21:35,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:36,322 INFO L124 PetriNetUnfolderBase]: 923/1700 cut-off events. [2024-06-27 19:21:36,322 INFO L125 PetriNetUnfolderBase]: For 103508/103508 co-relation queries the response was YES. [2024-06-27 19:21:36,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10908 conditions, 1700 events. 923/1700 cut-off events. For 103508/103508 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 10084 event pairs, 180 based on Foata normal form. 2/1701 useless extension candidates. Maximal degree in co-relation 10716. Up to 1557 conditions per place. [2024-06-27 19:21:36,344 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 314 selfloop transitions, 36 changer transitions 0/352 dead transitions. [2024-06-27 19:21:36,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 352 transitions, 5276 flow [2024-06-27 19:21:36,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:21:36,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:21:36,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-27 19:21:36,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-27 19:21:36,345 INFO L175 Difference]: Start difference. First operand has 421 places, 333 transitions, 4486 flow. Second operand 10 states and 113 transitions. [2024-06-27 19:21:36,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 352 transitions, 5276 flow [2024-06-27 19:21:36,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 352 transitions, 5133 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-27 19:21:36,927 INFO L231 Difference]: Finished difference. Result has 423 places, 334 transitions, 4461 flow [2024-06-27 19:21:36,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4343, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4461, PETRI_PLACES=423, PETRI_TRANSITIONS=334} [2024-06-27 19:21:36,927 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 393 predicate places. [2024-06-27 19:21:36,927 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 334 transitions, 4461 flow [2024-06-27 19:21:36,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:36,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:36,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:21:36,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-27 19:21:36,928 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:21:36,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:36,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1646944196, now seen corresponding path program 13 times [2024-06-27 19:21:36,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:36,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673390953] [2024-06-27 19:21:36,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:36,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:36,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:38,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:38,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:38,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673390953] [2024-06-27 19:21:38,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673390953] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:38,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:38,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:21:38,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70876919] [2024-06-27 19:21:38,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:38,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:21:38,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:38,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:21:38,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:21:38,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:21:38,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 334 transitions, 4461 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:38,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:38,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:21:38,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:38,921 INFO L124 PetriNetUnfolderBase]: 927/1710 cut-off events. [2024-06-27 19:21:38,921 INFO L125 PetriNetUnfolderBase]: For 105288/105288 co-relation queries the response was YES. [2024-06-27 19:21:38,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10961 conditions, 1710 events. 927/1710 cut-off events. For 105288/105288 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 10203 event pairs, 174 based on Foata normal form. 2/1708 useless extension candidates. Maximal degree in co-relation 10768. Up to 1555 conditions per place. [2024-06-27 19:21:38,943 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 308 selfloop transitions, 43 changer transitions 0/353 dead transitions. [2024-06-27 19:21:38,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 353 transitions, 5271 flow [2024-06-27 19:21:38,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:21:38,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:21:38,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-27 19:21:38,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-27 19:21:38,944 INFO L175 Difference]: Start difference. First operand has 423 places, 334 transitions, 4461 flow. Second operand 11 states and 118 transitions. [2024-06-27 19:21:38,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 353 transitions, 5271 flow [2024-06-27 19:21:39,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 353 transitions, 5163 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-27 19:21:39,553 INFO L231 Difference]: Finished difference. Result has 426 places, 335 transitions, 4487 flow [2024-06-27 19:21:39,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4353, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4487, PETRI_PLACES=426, PETRI_TRANSITIONS=335} [2024-06-27 19:21:39,554 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 396 predicate places. [2024-06-27 19:21:39,554 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 335 transitions, 4487 flow [2024-06-27 19:21:39,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:39,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:39,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:21:39,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-27 19:21:39,554 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:21:39,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:39,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1795315342, now seen corresponding path program 1 times [2024-06-27 19:21:39,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:39,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127670718] [2024-06-27 19:21:39,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:39,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:39,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:41,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:41,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:41,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127670718] [2024-06-27 19:21:41,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127670718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:41,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:41,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:21:41,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205978882] [2024-06-27 19:21:41,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:41,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:21:41,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:41,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:21:41,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:21:41,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:21:41,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 335 transitions, 4487 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:41,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:41,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:21:41,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:42,144 INFO L124 PetriNetUnfolderBase]: 947/1754 cut-off events. [2024-06-27 19:21:42,145 INFO L125 PetriNetUnfolderBase]: For 151972/151972 co-relation queries the response was YES. [2024-06-27 19:21:42,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11116 conditions, 1754 events. 947/1754 cut-off events. For 151972/151972 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 10533 event pairs, 191 based on Foata normal form. 10/1760 useless extension candidates. Maximal degree in co-relation 10921. Up to 1555 conditions per place. [2024-06-27 19:21:42,166 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 302 selfloop transitions, 37 changer transitions 18/359 dead transitions. [2024-06-27 19:21:42,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 359 transitions, 5319 flow [2024-06-27 19:21:42,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:21:42,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:21:42,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-27 19:21:42,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3521505376344086 [2024-06-27 19:21:42,167 INFO L175 Difference]: Start difference. First operand has 426 places, 335 transitions, 4487 flow. Second operand 12 states and 131 transitions. [2024-06-27 19:21:42,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 359 transitions, 5319 flow [2024-06-27 19:21:42,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 359 transitions, 5195 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-27 19:21:42,767 INFO L231 Difference]: Finished difference. Result has 429 places, 327 transitions, 4285 flow [2024-06-27 19:21:42,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4363, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4285, PETRI_PLACES=429, PETRI_TRANSITIONS=327} [2024-06-27 19:21:42,767 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 399 predicate places. [2024-06-27 19:21:42,768 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 327 transitions, 4285 flow [2024-06-27 19:21:42,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:42,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:42,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:21:42,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-27 19:21:42,768 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:21:42,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:42,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1646949776, now seen corresponding path program 14 times [2024-06-27 19:21:42,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:42,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905386214] [2024-06-27 19:21:42,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:42,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:42,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:43,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:43,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:43,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905386214] [2024-06-27 19:21:43,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905386214] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:43,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:43,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:21:43,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556103066] [2024-06-27 19:21:43,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:43,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:21:43,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:43,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:21:43,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:21:43,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:21:43,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 327 transitions, 4285 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:43,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:43,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:21:43,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:44,421 INFO L124 PetriNetUnfolderBase]: 912/1689 cut-off events. [2024-06-27 19:21:44,421 INFO L125 PetriNetUnfolderBase]: For 107995/107995 co-relation queries the response was YES. [2024-06-27 19:21:44,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10694 conditions, 1689 events. 912/1689 cut-off events. For 107995/107995 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 10062 event pairs, 174 based on Foata normal form. 2/1687 useless extension candidates. Maximal degree in co-relation 10498. Up to 1520 conditions per place. [2024-06-27 19:21:44,444 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 300 selfloop transitions, 44 changer transitions 0/346 dead transitions. [2024-06-27 19:21:44,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 346 transitions, 5077 flow [2024-06-27 19:21:44,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:21:44,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:21:44,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-27 19:21:44,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-27 19:21:44,445 INFO L175 Difference]: Start difference. First operand has 429 places, 327 transitions, 4285 flow. Second operand 11 states and 119 transitions. [2024-06-27 19:21:44,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 346 transitions, 5077 flow [2024-06-27 19:21:45,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 346 transitions, 4957 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-06-27 19:21:45,085 INFO L231 Difference]: Finished difference. Result has 424 places, 328 transitions, 4309 flow [2024-06-27 19:21:45,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4171, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4309, PETRI_PLACES=424, PETRI_TRANSITIONS=328} [2024-06-27 19:21:45,085 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 394 predicate places. [2024-06-27 19:21:45,085 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 328 transitions, 4309 flow [2024-06-27 19:21:45,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:45,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:45,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:21:45,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-27 19:21:45,085 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:21:45,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:45,086 INFO L85 PathProgramCache]: Analyzing trace with hash -977715632, now seen corresponding path program 15 times [2024-06-27 19:21:45,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:45,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941321301] [2024-06-27 19:21:45,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:45,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:45,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:46,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:46,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:46,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941321301] [2024-06-27 19:21:46,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941321301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:46,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:46,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:21:46,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174510649] [2024-06-27 19:21:46,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:46,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:21:46,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:46,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:21:46,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:21:46,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:21:46,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 328 transitions, 4309 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:46,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:46,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:21:46,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:46,730 INFO L124 PetriNetUnfolderBase]: 916/1697 cut-off events. [2024-06-27 19:21:46,730 INFO L125 PetriNetUnfolderBase]: For 108861/108861 co-relation queries the response was YES. [2024-06-27 19:21:46,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10688 conditions, 1697 events. 916/1697 cut-off events. For 108861/108861 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 10129 event pairs, 172 based on Foata normal form. 2/1695 useless extension candidates. Maximal degree in co-relation 10493. Up to 1542 conditions per place. [2024-06-27 19:21:46,751 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 304 selfloop transitions, 41 changer transitions 0/347 dead transitions. [2024-06-27 19:21:46,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 347 transitions, 5095 flow [2024-06-27 19:21:46,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:21:46,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:21:46,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-27 19:21:46,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-27 19:21:46,752 INFO L175 Difference]: Start difference. First operand has 424 places, 328 transitions, 4309 flow. Second operand 11 states and 116 transitions. [2024-06-27 19:21:46,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 347 transitions, 5095 flow [2024-06-27 19:21:47,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 347 transitions, 4949 flow, removed 30 selfloop flow, removed 11 redundant places. [2024-06-27 19:21:47,369 INFO L231 Difference]: Finished difference. Result has 424 places, 329 transitions, 4297 flow [2024-06-27 19:21:47,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4165, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4297, PETRI_PLACES=424, PETRI_TRANSITIONS=329} [2024-06-27 19:21:47,369 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 394 predicate places. [2024-06-27 19:21:47,369 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 329 transitions, 4297 flow [2024-06-27 19:21:47,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:47,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:47,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:21:47,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-27 19:21:47,370 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:21:47,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:47,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1447642406, now seen corresponding path program 16 times [2024-06-27 19:21:47,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:47,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525169459] [2024-06-27 19:21:47,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:47,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:47,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:48,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:48,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:48,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525169459] [2024-06-27 19:21:48,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525169459] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:48,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:48,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:21:48,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849619625] [2024-06-27 19:21:48,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:48,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:21:48,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:48,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:21:48,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:21:48,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:21:48,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 329 transitions, 4297 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:48,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:48,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:21:48,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:49,015 INFO L124 PetriNetUnfolderBase]: 920/1705 cut-off events. [2024-06-27 19:21:49,015 INFO L125 PetriNetUnfolderBase]: For 106866/106866 co-relation queries the response was YES. [2024-06-27 19:21:49,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10663 conditions, 1705 events. 920/1705 cut-off events. For 106866/106866 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 10192 event pairs, 174 based on Foata normal form. 2/1703 useless extension candidates. Maximal degree in co-relation 10469. Up to 1525 conditions per place. [2024-06-27 19:21:49,036 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 298 selfloop transitions, 48 changer transitions 0/348 dead transitions. [2024-06-27 19:21:49,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 348 transitions, 5093 flow [2024-06-27 19:21:49,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:21:49,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:21:49,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-27 19:21:49,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-27 19:21:49,037 INFO L175 Difference]: Start difference. First operand has 424 places, 329 transitions, 4297 flow. Second operand 11 states and 119 transitions. [2024-06-27 19:21:49,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 348 transitions, 5093 flow [2024-06-27 19:21:49,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 348 transitions, 4971 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-27 19:21:49,695 INFO L231 Difference]: Finished difference. Result has 426 places, 330 transitions, 4323 flow [2024-06-27 19:21:49,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4175, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4323, PETRI_PLACES=426, PETRI_TRANSITIONS=330} [2024-06-27 19:21:49,695 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 396 predicate places. [2024-06-27 19:21:49,695 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 330 transitions, 4323 flow [2024-06-27 19:21:49,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:49,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:49,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:21:49,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-27 19:21:49,696 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:21:49,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:49,696 INFO L85 PathProgramCache]: Analyzing trace with hash -971993776, now seen corresponding path program 2 times [2024-06-27 19:21:49,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:49,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908940020] [2024-06-27 19:21:49,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:49,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:49,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:50,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:50,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:50,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908940020] [2024-06-27 19:21:50,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908940020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:50,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:50,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:21:50,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177192975] [2024-06-27 19:21:50,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:50,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:21:50,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:50,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:21:50,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:21:50,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:21:50,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 330 transitions, 4323 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:50,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:50,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:21:50,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:51,594 INFO L124 PetriNetUnfolderBase]: 936/1741 cut-off events. [2024-06-27 19:21:51,594 INFO L125 PetriNetUnfolderBase]: For 154380/154380 co-relation queries the response was YES. [2024-06-27 19:21:51,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10776 conditions, 1741 events. 936/1741 cut-off events. For 154380/154380 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 10473 event pairs, 182 based on Foata normal form. 10/1747 useless extension candidates. Maximal degree in co-relation 10581. Up to 1532 conditions per place. [2024-06-27 19:21:51,616 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 297 selfloop transitions, 39 changer transitions 16/354 dead transitions. [2024-06-27 19:21:51,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 354 transitions, 5139 flow [2024-06-27 19:21:51,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:21:51,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:21:51,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-27 19:21:51,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3521505376344086 [2024-06-27 19:21:51,617 INFO L175 Difference]: Start difference. First operand has 426 places, 330 transitions, 4323 flow. Second operand 12 states and 131 transitions. [2024-06-27 19:21:51,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 354 transitions, 5139 flow [2024-06-27 19:21:52,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 354 transitions, 4989 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-06-27 19:21:52,277 INFO L231 Difference]: Finished difference. Result has 428 places, 324 transitions, 4172 flow [2024-06-27 19:21:52,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4173, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4172, PETRI_PLACES=428, PETRI_TRANSITIONS=324} [2024-06-27 19:21:52,277 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 398 predicate places. [2024-06-27 19:21:52,277 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 324 transitions, 4172 flow [2024-06-27 19:21:52,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:52,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:52,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:21:52,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-27 19:21:52,278 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:21:52,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:52,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1447647986, now seen corresponding path program 17 times [2024-06-27 19:21:52,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:52,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486998275] [2024-06-27 19:21:52,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:52,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:52,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:53,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:53,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:53,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486998275] [2024-06-27 19:21:53,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486998275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:53,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:53,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:21:53,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643101808] [2024-06-27 19:21:53,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:53,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:21:53,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:53,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:21:53,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:21:53,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:21:53,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 324 transitions, 4172 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:53,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:53,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:21:53,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:54,176 INFO L124 PetriNetUnfolderBase]: 904/1681 cut-off events. [2024-06-27 19:21:54,176 INFO L125 PetriNetUnfolderBase]: For 109456/109456 co-relation queries the response was YES. [2024-06-27 19:21:54,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10433 conditions, 1681 events. 904/1681 cut-off events. For 109456/109456 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 10025 event pairs, 170 based on Foata normal form. 2/1679 useless extension candidates. Maximal degree in co-relation 10237. Up to 1481 conditions per place. [2024-06-27 19:21:54,197 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 293 selfloop transitions, 50 changer transitions 0/345 dead transitions. [2024-06-27 19:21:54,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 345 transitions, 4968 flow [2024-06-27 19:21:54,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:21:54,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:21:54,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-27 19:21:54,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-27 19:21:54,198 INFO L175 Difference]: Start difference. First operand has 428 places, 324 transitions, 4172 flow. Second operand 12 states and 128 transitions. [2024-06-27 19:21:54,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 345 transitions, 4968 flow [2024-06-27 19:21:54,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 345 transitions, 4872 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-27 19:21:54,887 INFO L231 Difference]: Finished difference. Result has 424 places, 325 transitions, 4232 flow [2024-06-27 19:21:54,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4078, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4232, PETRI_PLACES=424, PETRI_TRANSITIONS=325} [2024-06-27 19:21:54,888 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 394 predicate places. [2024-06-27 19:21:54,888 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 325 transitions, 4232 flow [2024-06-27 19:21:54,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:54,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:54,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:21:54,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-27 19:21:54,889 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:21:54,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:54,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1447432660, now seen corresponding path program 3 times [2024-06-27 19:21:54,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:54,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500950182] [2024-06-27 19:21:54,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:54,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:54,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:56,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:56,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:56,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500950182] [2024-06-27 19:21:56,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500950182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:56,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:56,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:21:56,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60515341] [2024-06-27 19:21:56,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:56,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:21:56,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:56,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:21:56,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:21:56,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:21:56,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 325 transitions, 4232 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:56,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:56,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:21:56,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:56,875 INFO L124 PetriNetUnfolderBase]: 920/1717 cut-off events. [2024-06-27 19:21:56,875 INFO L125 PetriNetUnfolderBase]: For 154187/154187 co-relation queries the response was YES. [2024-06-27 19:21:56,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10592 conditions, 1717 events. 920/1717 cut-off events. For 154187/154187 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 10291 event pairs, 178 based on Foata normal form. 10/1723 useless extension candidates. Maximal degree in co-relation 10397. Up to 1483 conditions per place. [2024-06-27 19:21:56,897 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 288 selfloop transitions, 43 changer transitions 16/349 dead transitions. [2024-06-27 19:21:56,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 349 transitions, 5038 flow [2024-06-27 19:21:56,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:21:56,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:21:56,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-27 19:21:56,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 19:21:56,898 INFO L175 Difference]: Start difference. First operand has 424 places, 325 transitions, 4232 flow. Second operand 12 states and 132 transitions. [2024-06-27 19:21:56,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 349 transitions, 5038 flow [2024-06-27 19:21:57,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 349 transitions, 4878 flow, removed 32 selfloop flow, removed 12 redundant places. [2024-06-27 19:21:57,537 INFO L231 Difference]: Finished difference. Result has 424 places, 319 transitions, 4089 flow [2024-06-27 19:21:57,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4074, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4089, PETRI_PLACES=424, PETRI_TRANSITIONS=319} [2024-06-27 19:21:57,537 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 394 predicate places. [2024-06-27 19:21:57,537 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 319 transitions, 4089 flow [2024-06-27 19:21:57,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:57,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:57,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:21:57,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-27 19:21:57,538 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:21:57,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:57,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1440290756, now seen corresponding path program 18 times [2024-06-27 19:21:57,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:57,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857148156] [2024-06-27 19:21:57,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:57,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:57,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:59,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:59,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:59,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857148156] [2024-06-27 19:21:59,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857148156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:59,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:59,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:21:59,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106156496] [2024-06-27 19:21:59,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:59,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:21:59,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:59,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:21:59,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:21:59,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:21:59,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 319 transitions, 4089 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:59,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:59,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:21:59,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:59,849 INFO L124 PetriNetUnfolderBase]: 888/1657 cut-off events. [2024-06-27 19:21:59,849 INFO L125 PetriNetUnfolderBase]: For 103486/103486 co-relation queries the response was YES. [2024-06-27 19:21:59,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10205 conditions, 1657 events. 888/1657 cut-off events. For 103486/103486 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 9879 event pairs, 174 based on Foata normal form. 2/1655 useless extension candidates. Maximal degree in co-relation 10011. Up to 1468 conditions per place. [2024-06-27 19:21:59,870 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 288 selfloop transitions, 47 changer transitions 1/338 dead transitions. [2024-06-27 19:21:59,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 338 transitions, 4863 flow [2024-06-27 19:21:59,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:21:59,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:21:59,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-27 19:21:59,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-27 19:21:59,871 INFO L175 Difference]: Start difference. First operand has 424 places, 319 transitions, 4089 flow. Second operand 11 states and 119 transitions. [2024-06-27 19:21:59,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 338 transitions, 4863 flow [2024-06-27 19:22:00,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 338 transitions, 4762 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-27 19:22:00,465 INFO L231 Difference]: Finished difference. Result has 418 places, 320 transitions, 4132 flow [2024-06-27 19:22:00,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3990, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4132, PETRI_PLACES=418, PETRI_TRANSITIONS=320} [2024-06-27 19:22:00,465 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 388 predicate places. [2024-06-27 19:22:00,465 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 320 transitions, 4132 flow [2024-06-27 19:22:00,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:00,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:00,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:22:00,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-27 19:22:00,466 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:22:00,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:00,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1440282820, now seen corresponding path program 4 times [2024-06-27 19:22:00,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:00,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609998521] [2024-06-27 19:22:00,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:00,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:00,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:22:01,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:22:01,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:22:01,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609998521] [2024-06-27 19:22:01,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609998521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:22:01,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:22:01,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:22:01,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192209826] [2024-06-27 19:22:01,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:22:01,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:22:01,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:22:01,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:22:01,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:22:02,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:22:02,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 320 transitions, 4132 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:02,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:22:02,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:22:02,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:02,681 INFO L124 PetriNetUnfolderBase]: 904/1693 cut-off events. [2024-06-27 19:22:02,681 INFO L125 PetriNetUnfolderBase]: For 145934/145934 co-relation queries the response was YES. [2024-06-27 19:22:02,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10338 conditions, 1693 events. 904/1693 cut-off events. For 145934/145934 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 10143 event pairs, 178 based on Foata normal form. 10/1699 useless extension candidates. Maximal degree in co-relation 10145. Up to 1450 conditions per place. [2024-06-27 19:22:02,702 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 282 selfloop transitions, 43 changer transitions 17/344 dead transitions. [2024-06-27 19:22:02,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 344 transitions, 4926 flow [2024-06-27 19:22:02,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:22:02,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:22:02,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-27 19:22:02,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 19:22:02,703 INFO L175 Difference]: Start difference. First operand has 418 places, 320 transitions, 4132 flow. Second operand 12 states and 132 transitions. [2024-06-27 19:22:02,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 344 transitions, 4926 flow [2024-06-27 19:22:03,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 344 transitions, 4776 flow, removed 29 selfloop flow, removed 10 redundant places. [2024-06-27 19:22:03,279 INFO L231 Difference]: Finished difference. Result has 420 places, 314 transitions, 3991 flow [2024-06-27 19:22:03,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3986, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3991, PETRI_PLACES=420, PETRI_TRANSITIONS=314} [2024-06-27 19:22:03,280 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 390 predicate places. [2024-06-27 19:22:03,280 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 314 transitions, 3991 flow [2024-06-27 19:22:03,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:03,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:03,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:22:03,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-27 19:22:03,280 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:22:03,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:03,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1440023350, now seen corresponding path program 5 times [2024-06-27 19:22:03,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:03,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747995022] [2024-06-27 19:22:03,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:03,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:03,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:22:05,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:22:05,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:22:05,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747995022] [2024-06-27 19:22:05,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747995022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:22:05,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:22:05,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:22:05,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101450640] [2024-06-27 19:22:05,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:22:05,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:22:05,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:22:05,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:22:05,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:22:05,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:22:05,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 314 transitions, 3991 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:05,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:22:05,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:22:05,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:05,880 INFO L124 PetriNetUnfolderBase]: 886/1663 cut-off events. [2024-06-27 19:22:05,880 INFO L125 PetriNetUnfolderBase]: For 144201/144201 co-relation queries the response was YES. [2024-06-27 19:22:05,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10040 conditions, 1663 events. 886/1663 cut-off events. For 144201/144201 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 9930 event pairs, 180 based on Foata normal form. 10/1669 useless extension candidates. Maximal degree in co-relation 9847. Up to 1427 conditions per place. [2024-06-27 19:22:05,904 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 279 selfloop transitions, 44 changer transitions 13/338 dead transitions. [2024-06-27 19:22:05,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 338 transitions, 4769 flow [2024-06-27 19:22:05,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:22:05,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:22:05,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-27 19:22:05,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34946236559139787 [2024-06-27 19:22:05,905 INFO L175 Difference]: Start difference. First operand has 420 places, 314 transitions, 3991 flow. Second operand 12 states and 130 transitions. [2024-06-27 19:22:05,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 338 transitions, 4769 flow [2024-06-27 19:22:06,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 338 transitions, 4643 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-27 19:22:06,457 INFO L231 Difference]: Finished difference. Result has 414 places, 311 transitions, 3913 flow [2024-06-27 19:22:06,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3865, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3913, PETRI_PLACES=414, PETRI_TRANSITIONS=311} [2024-06-27 19:22:06,457 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 384 predicate places. [2024-06-27 19:22:06,457 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 311 transitions, 3913 flow [2024-06-27 19:22:06,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:06,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:06,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:22:06,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-27 19:22:06,457 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:22:06,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:06,458 INFO L85 PathProgramCache]: Analyzing trace with hash -770635756, now seen corresponding path program 6 times [2024-06-27 19:22:06,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:06,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500693345] [2024-06-27 19:22:06,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:06,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:06,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:22:08,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:22:08,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:22:08,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500693345] [2024-06-27 19:22:08,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500693345] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:22:08,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:22:08,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:22:08,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411439706] [2024-06-27 19:22:08,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:22:08,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:22:08,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:22:08,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:22:08,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:22:08,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:22:08,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 311 transitions, 3913 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:08,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:22:08,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:22:08,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:09,002 INFO L124 PetriNetUnfolderBase]: 874/1643 cut-off events. [2024-06-27 19:22:09,002 INFO L125 PetriNetUnfolderBase]: For 130465/130465 co-relation queries the response was YES. [2024-06-27 19:22:09,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9843 conditions, 1643 events. 874/1643 cut-off events. For 130465/130465 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 9788 event pairs, 174 based on Foata normal form. 8/1647 useless extension candidates. Maximal degree in co-relation 9653. Up to 1385 conditions per place. [2024-06-27 19:22:09,022 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 276 selfloop transitions, 41 changer transitions 18/337 dead transitions. [2024-06-27 19:22:09,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 337 transitions, 4705 flow [2024-06-27 19:22:09,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:22:09,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:22:09,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-27 19:22:09,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34946236559139787 [2024-06-27 19:22:09,023 INFO L175 Difference]: Start difference. First operand has 414 places, 311 transitions, 3913 flow. Second operand 12 states and 130 transitions. [2024-06-27 19:22:09,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 337 transitions, 4705 flow [2024-06-27 19:22:09,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 337 transitions, 4599 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-27 19:22:09,669 INFO L231 Difference]: Finished difference. Result has 412 places, 307 transitions, 3819 flow [2024-06-27 19:22:09,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3811, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3819, PETRI_PLACES=412, PETRI_TRANSITIONS=307} [2024-06-27 19:22:09,669 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 382 predicate places. [2024-06-27 19:22:09,669 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 307 transitions, 3819 flow [2024-06-27 19:22:09,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:09,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:09,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:22:09,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-27 19:22:09,669 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:22:09,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:09,670 INFO L85 PathProgramCache]: Analyzing trace with hash -237294766, now seen corresponding path program 19 times [2024-06-27 19:22:09,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:09,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903465587] [2024-06-27 19:22:09,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:09,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:09,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:22:10,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:22:10,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:22:10,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903465587] [2024-06-27 19:22:10,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903465587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:22:10,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:22:10,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:22:10,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239404676] [2024-06-27 19:22:10,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:22:10,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:22:10,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:22:10,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:22:10,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:22:10,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:22:10,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 307 transitions, 3819 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:10,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:22:10,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:22:10,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:11,299 INFO L124 PetriNetUnfolderBase]: 834/1557 cut-off events. [2024-06-27 19:22:11,299 INFO L125 PetriNetUnfolderBase]: For 97026/97026 co-relation queries the response was YES. [2024-06-27 19:22:11,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9396 conditions, 1557 events. 834/1557 cut-off events. For 97026/97026 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 9127 event pairs, 100 based on Foata normal form. 2/1558 useless extension candidates. Maximal degree in co-relation 9207. Up to 1230 conditions per place. [2024-06-27 19:22:11,318 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 272 selfloop transitions, 50 changer transitions 0/324 dead transitions. [2024-06-27 19:22:11,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 324 transitions, 4541 flow [2024-06-27 19:22:11,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:22:11,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:22:11,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-27 19:22:11,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3258064516129032 [2024-06-27 19:22:11,319 INFO L175 Difference]: Start difference. First operand has 412 places, 307 transitions, 3819 flow. Second operand 10 states and 101 transitions. [2024-06-27 19:22:11,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 324 transitions, 4541 flow [2024-06-27 19:22:11,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 324 transitions, 4429 flow, removed 15 selfloop flow, removed 12 redundant places. [2024-06-27 19:22:11,850 INFO L231 Difference]: Finished difference. Result has 403 places, 308 transitions, 3861 flow [2024-06-27 19:22:11,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3707, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3861, PETRI_PLACES=403, PETRI_TRANSITIONS=308} [2024-06-27 19:22:11,851 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 373 predicate places. [2024-06-27 19:22:11,851 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 308 transitions, 3861 flow [2024-06-27 19:22:11,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:11,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:11,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:22:11,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-27 19:22:11,852 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:22:11,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:11,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1199549268, now seen corresponding path program 20 times [2024-06-27 19:22:11,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:11,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524950948] [2024-06-27 19:22:11,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:11,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:11,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:22:12,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:22:12,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:22:12,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524950948] [2024-06-27 19:22:12,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524950948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:22:12,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:22:12,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:22:12,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105507430] [2024-06-27 19:22:12,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:22:12,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:22:12,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:22:12,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:22:12,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:22:12,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:22:12,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 308 transitions, 3861 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:12,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:22:12,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:22:12,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:13,514 INFO L124 PetriNetUnfolderBase]: 838/1565 cut-off events. [2024-06-27 19:22:13,515 INFO L125 PetriNetUnfolderBase]: For 95982/95982 co-relation queries the response was YES. [2024-06-27 19:22:13,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9517 conditions, 1565 events. 838/1565 cut-off events. For 95982/95982 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 9204 event pairs, 158 based on Foata normal form. 2/1566 useless extension candidates. Maximal degree in co-relation 9332. Up to 1365 conditions per place. [2024-06-27 19:22:13,533 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 275 selfloop transitions, 47 changer transitions 0/324 dead transitions. [2024-06-27 19:22:13,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 324 transitions, 4583 flow [2024-06-27 19:22:13,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:22:13,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:22:13,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-27 19:22:13,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33548387096774196 [2024-06-27 19:22:13,534 INFO L175 Difference]: Start difference. First operand has 403 places, 308 transitions, 3861 flow. Second operand 10 states and 104 transitions. [2024-06-27 19:22:13,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 324 transitions, 4583 flow [2024-06-27 19:22:14,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 324 transitions, 4443 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-27 19:22:14,062 INFO L231 Difference]: Finished difference. Result has 405 places, 309 transitions, 3869 flow [2024-06-27 19:22:14,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3725, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3869, PETRI_PLACES=405, PETRI_TRANSITIONS=309} [2024-06-27 19:22:14,063 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 375 predicate places. [2024-06-27 19:22:14,063 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 309 transitions, 3869 flow [2024-06-27 19:22:14,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:14,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:14,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:22:14,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-27 19:22:14,063 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:22:14,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:14,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1195830198, now seen corresponding path program 21 times [2024-06-27 19:22:14,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:14,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515920626] [2024-06-27 19:22:14,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:14,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:14,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:22:15,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:22:15,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:22:15,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515920626] [2024-06-27 19:22:15,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515920626] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:22:15,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:22:15,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:22:15,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932562203] [2024-06-27 19:22:15,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:22:15,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:22:15,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:22:15,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:22:15,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:22:15,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:22:15,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 309 transitions, 3869 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:15,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:22:15,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:22:15,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:16,049 INFO L124 PetriNetUnfolderBase]: 842/1573 cut-off events. [2024-06-27 19:22:16,049 INFO L125 PetriNetUnfolderBase]: For 94230/94230 co-relation queries the response was YES. [2024-06-27 19:22:16,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9508 conditions, 1573 events. 842/1573 cut-off events. For 94230/94230 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 9292 event pairs, 177 based on Foata normal form. 2/1571 useless extension candidates. Maximal degree in co-relation 9322. Up to 1421 conditions per place. [2024-06-27 19:22:16,068 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 280 selfloop transitions, 42 changer transitions 0/324 dead transitions. [2024-06-27 19:22:16,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 324 transitions, 4595 flow [2024-06-27 19:22:16,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:22:16,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:22:16,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-27 19:22:16,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-27 19:22:16,069 INFO L175 Difference]: Start difference. First operand has 405 places, 309 transitions, 3869 flow. Second operand 11 states and 118 transitions. [2024-06-27 19:22:16,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 324 transitions, 4595 flow [2024-06-27 19:22:16,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 324 transitions, 4465 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-27 19:22:16,624 INFO L231 Difference]: Finished difference. Result has 408 places, 310 transitions, 3871 flow [2024-06-27 19:22:16,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3741, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3871, PETRI_PLACES=408, PETRI_TRANSITIONS=310} [2024-06-27 19:22:16,624 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 378 predicate places. [2024-06-27 19:22:16,624 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 310 transitions, 3871 flow [2024-06-27 19:22:16,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:16,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:16,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:22:16,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-27 19:22:16,625 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:22:16,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:16,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1195824401, now seen corresponding path program 3 times [2024-06-27 19:22:16,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:16,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709845443] [2024-06-27 19:22:16,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:16,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:16,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:22:18,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:22:18,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:22:18,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709845443] [2024-06-27 19:22:18,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709845443] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:22:18,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:22:18,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:22:18,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634930383] [2024-06-27 19:22:18,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:22:18,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:22:18,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:22:18,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:22:18,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:22:18,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:22:18,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 310 transitions, 3871 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:18,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:22:18,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:22:18,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:19,225 INFO L124 PetriNetUnfolderBase]: 840/1570 cut-off events. [2024-06-27 19:22:19,225 INFO L125 PetriNetUnfolderBase]: For 82624/82624 co-relation queries the response was YES. [2024-06-27 19:22:19,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9293 conditions, 1570 events. 840/1570 cut-off events. For 82624/82624 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 9256 event pairs, 166 based on Foata normal form. 1/1570 useless extension candidates. Maximal degree in co-relation 9106. Up to 1369 conditions per place. [2024-06-27 19:22:19,244 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 253 selfloop transitions, 68 changer transitions 2/325 dead transitions. [2024-06-27 19:22:19,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 325 transitions, 4567 flow [2024-06-27 19:22:19,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:22:19,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:22:19,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-27 19:22:19,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-27 19:22:19,245 INFO L175 Difference]: Start difference. First operand has 408 places, 310 transitions, 3871 flow. Second operand 10 states and 112 transitions. [2024-06-27 19:22:19,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 325 transitions, 4567 flow [2024-06-27 19:22:19,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 325 transitions, 4353 flow, removed 32 selfloop flow, removed 14 redundant places. [2024-06-27 19:22:19,775 INFO L231 Difference]: Finished difference. Result has 404 places, 310 transitions, 3804 flow [2024-06-27 19:22:19,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3657, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3804, PETRI_PLACES=404, PETRI_TRANSITIONS=310} [2024-06-27 19:22:19,776 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 374 predicate places. [2024-06-27 19:22:19,776 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 310 transitions, 3804 flow [2024-06-27 19:22:19,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:19,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:19,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:22:19,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-27 19:22:19,776 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:22:19,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:19,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1195974348, now seen corresponding path program 22 times [2024-06-27 19:22:19,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:19,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277551611] [2024-06-27 19:22:19,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:19,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:19,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:22:20,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:22:20,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:22:20,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277551611] [2024-06-27 19:22:20,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277551611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:22:20,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:22:20,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:22:20,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136657146] [2024-06-27 19:22:20,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:22:20,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:22:20,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:22:20,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:22:20,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:22:21,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:22:21,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 310 transitions, 3804 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:21,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:22:21,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:22:21,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:21,598 INFO L124 PetriNetUnfolderBase]: 844/1578 cut-off events. [2024-06-27 19:22:21,598 INFO L125 PetriNetUnfolderBase]: For 89142/89142 co-relation queries the response was YES. [2024-06-27 19:22:21,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9274 conditions, 1578 events. 844/1578 cut-off events. For 89142/89142 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 9302 event pairs, 156 based on Foata normal form. 2/1579 useless extension candidates. Maximal degree in co-relation 9091. Up to 1375 conditions per place. [2024-06-27 19:22:21,619 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 269 selfloop transitions, 55 changer transitions 0/326 dead transitions. [2024-06-27 19:22:21,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 326 transitions, 4532 flow [2024-06-27 19:22:21,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:22:21,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:22:21,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-27 19:22:21,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-27 19:22:21,620 INFO L175 Difference]: Start difference. First operand has 404 places, 310 transitions, 3804 flow. Second operand 10 states and 106 transitions. [2024-06-27 19:22:21,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 326 transitions, 4532 flow [2024-06-27 19:22:22,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 326 transitions, 4337 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-27 19:22:22,099 INFO L231 Difference]: Finished difference. Result has 403 places, 311 transitions, 3770 flow [2024-06-27 19:22:22,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3609, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3770, PETRI_PLACES=403, PETRI_TRANSITIONS=311} [2024-06-27 19:22:22,099 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 373 predicate places. [2024-06-27 19:22:22,099 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 311 transitions, 3770 flow [2024-06-27 19:22:22,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:22,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:22,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:22:22,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-27 19:22:22,100 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:22:22,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:22,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1195824618, now seen corresponding path program 23 times [2024-06-27 19:22:22,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:22,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359444838] [2024-06-27 19:22:22,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:22,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:22,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:22:23,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:22:23,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:22:23,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359444838] [2024-06-27 19:22:23,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359444838] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:22:23,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:22:23,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:22:23,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019859475] [2024-06-27 19:22:23,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:22:23,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:22:23,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:22:23,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:22:23,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:22:23,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:22:23,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 311 transitions, 3770 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:23,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:22:23,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:22:23,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:24,204 INFO L124 PetriNetUnfolderBase]: 848/1586 cut-off events. [2024-06-27 19:22:24,204 INFO L125 PetriNetUnfolderBase]: For 89907/89907 co-relation queries the response was YES. [2024-06-27 19:22:24,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9318 conditions, 1586 events. 848/1586 cut-off events. For 89907/89907 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 9375 event pairs, 170 based on Foata normal form. 2/1587 useless extension candidates. Maximal degree in co-relation 9135. Up to 1390 conditions per place. [2024-06-27 19:22:24,218 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 260 selfloop transitions, 64 changer transitions 1/327 dead transitions. [2024-06-27 19:22:24,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 327 transitions, 4510 flow [2024-06-27 19:22:24,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:22:24,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:22:24,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-27 19:22:24,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 19:22:24,219 INFO L175 Difference]: Start difference. First operand has 403 places, 311 transitions, 3770 flow. Second operand 10 states and 110 transitions. [2024-06-27 19:22:24,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 327 transitions, 4510 flow [2024-06-27 19:22:24,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 327 transitions, 4361 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-27 19:22:24,744 INFO L231 Difference]: Finished difference. Result has 405 places, 312 transitions, 3801 flow [2024-06-27 19:22:24,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3623, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3801, PETRI_PLACES=405, PETRI_TRANSITIONS=312} [2024-06-27 19:22:24,745 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 375 predicate places. [2024-06-27 19:22:24,745 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 312 transitions, 3801 flow [2024-06-27 19:22:24,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:24,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:24,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:22:24,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-27 19:22:24,745 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:22:24,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:24,745 INFO L85 PathProgramCache]: Analyzing trace with hash -827689812, now seen corresponding path program 24 times [2024-06-27 19:22:24,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:24,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629702318] [2024-06-27 19:22:24,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:24,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:24,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:22:25,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:22:25,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:22:25,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629702318] [2024-06-27 19:22:25,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629702318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:22:25,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:22:25,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:22:25,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466534123] [2024-06-27 19:22:25,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:22:25,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:22:25,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:22:25,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:22:25,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:22:25,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:22:25,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 312 transitions, 3801 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:25,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:22:25,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:22:25,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:26,514 INFO L124 PetriNetUnfolderBase]: 852/1594 cut-off events. [2024-06-27 19:22:26,514 INFO L125 PetriNetUnfolderBase]: For 90325/90325 co-relation queries the response was YES. [2024-06-27 19:22:26,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9373 conditions, 1594 events. 852/1594 cut-off events. For 90325/90325 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 9424 event pairs, 130 based on Foata normal form. 2/1595 useless extension candidates. Maximal degree in co-relation 9189. Up to 1369 conditions per place. [2024-06-27 19:22:26,531 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 279 selfloop transitions, 50 changer transitions 0/331 dead transitions. [2024-06-27 19:22:26,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 331 transitions, 4560 flow [2024-06-27 19:22:26,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:22:26,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:22:26,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-27 19:22:26,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-27 19:22:26,532 INFO L175 Difference]: Start difference. First operand has 405 places, 312 transitions, 3801 flow. Second operand 10 states and 107 transitions. [2024-06-27 19:22:26,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 331 transitions, 4560 flow [2024-06-27 19:22:27,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 331 transitions, 4392 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-27 19:22:27,042 INFO L231 Difference]: Finished difference. Result has 407 places, 313 transitions, 3785 flow [2024-06-27 19:22:27,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3635, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3785, PETRI_PLACES=407, PETRI_TRANSITIONS=313} [2024-06-27 19:22:27,042 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 377 predicate places. [2024-06-27 19:22:27,043 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 313 transitions, 3785 flow [2024-06-27 19:22:27,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:27,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:27,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:22:27,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-27 19:22:27,043 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:22:27,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:27,043 INFO L85 PathProgramCache]: Analyzing trace with hash -823965162, now seen corresponding path program 25 times [2024-06-27 19:22:27,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:27,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620510428] [2024-06-27 19:22:27,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:27,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:27,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:22:28,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:22:28,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:22:28,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620510428] [2024-06-27 19:22:28,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620510428] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:22:28,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:22:28,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:22:28,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781633252] [2024-06-27 19:22:28,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:22:28,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:22:28,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:22:28,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:22:28,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:22:28,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:22:28,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 313 transitions, 3785 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:28,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:22:28,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:22:28,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:28,938 INFO L124 PetriNetUnfolderBase]: 856/1602 cut-off events. [2024-06-27 19:22:28,938 INFO L125 PetriNetUnfolderBase]: For 90371/90371 co-relation queries the response was YES. [2024-06-27 19:22:28,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9386 conditions, 1602 events. 856/1602 cut-off events. For 90371/90371 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 9491 event pairs, 183 based on Foata normal form. 2/1603 useless extension candidates. Maximal degree in co-relation 9201. Up to 1424 conditions per place. [2024-06-27 19:22:28,957 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 266 selfloop transitions, 63 changer transitions 0/331 dead transitions. [2024-06-27 19:22:28,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 331 transitions, 4550 flow [2024-06-27 19:22:28,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:22:28,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:22:28,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-27 19:22:28,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 19:22:28,958 INFO L175 Difference]: Start difference. First operand has 407 places, 313 transitions, 3785 flow. Second operand 10 states and 110 transitions. [2024-06-27 19:22:28,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 331 transitions, 4550 flow [2024-06-27 19:22:29,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 331 transitions, 4410 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-27 19:22:29,559 INFO L231 Difference]: Finished difference. Result has 409 places, 314 transitions, 3824 flow [2024-06-27 19:22:29,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3647, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3824, PETRI_PLACES=409, PETRI_TRANSITIONS=314} [2024-06-27 19:22:29,560 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 379 predicate places. [2024-06-27 19:22:29,560 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 314 transitions, 3824 flow [2024-06-27 19:22:29,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:29,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:29,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:22:29,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-27 19:22:29,560 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:22:29,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:29,560 INFO L85 PathProgramCache]: Analyzing trace with hash -823964945, now seen corresponding path program 4 times [2024-06-27 19:22:29,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:29,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782392893] [2024-06-27 19:22:29,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:29,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:29,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:22:31,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:22:31,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:22:31,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782392893] [2024-06-27 19:22:31,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782392893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:22:31,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:22:31,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:22:31,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316979714] [2024-06-27 19:22:31,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:22:31,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:22:31,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:22:31,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:22:31,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:22:31,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:22:31,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 314 transitions, 3824 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:31,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:22:31,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:22:31,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:31,897 INFO L124 PetriNetUnfolderBase]: 854/1599 cut-off events. [2024-06-27 19:22:31,897 INFO L125 PetriNetUnfolderBase]: For 78724/78724 co-relation queries the response was YES. [2024-06-27 19:22:31,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9190 conditions, 1599 events. 854/1599 cut-off events. For 78724/78724 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 9472 event pairs, 183 based on Foata normal form. 1/1599 useless extension candidates. Maximal degree in co-relation 9004. Up to 1421 conditions per place. [2024-06-27 19:22:31,917 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 262 selfloop transitions, 67 changer transitions 0/331 dead transitions. [2024-06-27 19:22:31,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 331 transitions, 4549 flow [2024-06-27 19:22:31,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:22:31,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:22:31,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-27 19:22:31,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-27 19:22:31,918 INFO L175 Difference]: Start difference. First operand has 409 places, 314 transitions, 3824 flow. Second operand 10 states and 111 transitions. [2024-06-27 19:22:31,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 331 transitions, 4549 flow [2024-06-27 19:22:32,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 331 transitions, 4380 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-27 19:22:32,479 INFO L231 Difference]: Finished difference. Result has 411 places, 314 transitions, 3801 flow [2024-06-27 19:22:32,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3655, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3801, PETRI_PLACES=411, PETRI_TRANSITIONS=314} [2024-06-27 19:22:32,479 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 381 predicate places. [2024-06-27 19:22:32,480 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 314 transitions, 3801 flow [2024-06-27 19:22:32,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:32,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:32,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:22:32,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-27 19:22:32,480 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:22:32,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:32,480 INFO L85 PathProgramCache]: Analyzing trace with hash -824114892, now seen corresponding path program 26 times [2024-06-27 19:22:32,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:32,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643607188] [2024-06-27 19:22:32,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:32,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:32,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:22:33,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:22:33,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:22:33,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643607188] [2024-06-27 19:22:33,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643607188] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:22:33,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:22:33,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:22:33,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717827404] [2024-06-27 19:22:33,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:22:33,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:22:33,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:22:33,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:22:33,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:22:33,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:22:33,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 314 transitions, 3801 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:33,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:22:33,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:22:33,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:34,127 INFO L124 PetriNetUnfolderBase]: 858/1607 cut-off events. [2024-06-27 19:22:34,128 INFO L125 PetriNetUnfolderBase]: For 83926/83926 co-relation queries the response was YES. [2024-06-27 19:22:34,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9225 conditions, 1607 events. 858/1607 cut-off events. For 83926/83926 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 9554 event pairs, 177 based on Foata normal form. 2/1608 useless extension candidates. Maximal degree in co-relation 9038. Up to 1431 conditions per place. [2024-06-27 19:22:34,147 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 279 selfloop transitions, 52 changer transitions 0/333 dead transitions. [2024-06-27 19:22:34,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 333 transitions, 4566 flow [2024-06-27 19:22:34,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:22:34,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:22:34,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-27 19:22:34,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-27 19:22:34,148 INFO L175 Difference]: Start difference. First operand has 411 places, 314 transitions, 3801 flow. Second operand 10 states and 108 transitions. [2024-06-27 19:22:34,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 333 transitions, 4566 flow [2024-06-27 19:22:34,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 333 transitions, 4131 flow, removed 17 selfloop flow, removed 13 redundant places. [2024-06-27 19:22:34,730 INFO L231 Difference]: Finished difference. Result has 408 places, 315 transitions, 3520 flow [2024-06-27 19:22:34,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3366, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3520, PETRI_PLACES=408, PETRI_TRANSITIONS=315} [2024-06-27 19:22:34,730 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 378 predicate places. [2024-06-27 19:22:34,730 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 315 transitions, 3520 flow [2024-06-27 19:22:34,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:34,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:34,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:22:34,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-27 19:22:34,731 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:22:34,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:34,731 INFO L85 PathProgramCache]: Analyzing trace with hash -823970742, now seen corresponding path program 27 times [2024-06-27 19:22:34,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:34,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246990831] [2024-06-27 19:22:34,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:34,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:34,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:22:35,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:22:35,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:22:35,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246990831] [2024-06-27 19:22:35,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246990831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:22:35,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:22:35,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:22:35,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582017993] [2024-06-27 19:22:35,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:22:35,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:22:35,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:22:35,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:22:35,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:22:36,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:22:36,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 315 transitions, 3520 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:36,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:22:36,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:22:36,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:36,629 INFO L124 PetriNetUnfolderBase]: 862/1615 cut-off events. [2024-06-27 19:22:36,629 INFO L125 PetriNetUnfolderBase]: For 83585/83585 co-relation queries the response was YES. [2024-06-27 19:22:36,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8954 conditions, 1615 events. 862/1615 cut-off events. For 83585/83585 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 9620 event pairs, 181 based on Foata normal form. 2/1616 useless extension candidates. Maximal degree in co-relation 8769. Up to 1433 conditions per place. [2024-06-27 19:22:36,645 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 274 selfloop transitions, 58 changer transitions 0/334 dead transitions. [2024-06-27 19:22:36,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 334 transitions, 4293 flow [2024-06-27 19:22:36,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:22:36,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:22:36,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-27 19:22:36,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-27 19:22:36,645 INFO L175 Difference]: Start difference. First operand has 408 places, 315 transitions, 3520 flow. Second operand 10 states and 109 transitions. [2024-06-27 19:22:36,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 334 transitions, 4293 flow [2024-06-27 19:22:37,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 334 transitions, 4149 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-27 19:22:37,133 INFO L231 Difference]: Finished difference. Result has 410 places, 316 transitions, 3544 flow [2024-06-27 19:22:37,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3378, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3544, PETRI_PLACES=410, PETRI_TRANSITIONS=316} [2024-06-27 19:22:37,134 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 380 predicate places. [2024-06-27 19:22:37,134 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 316 transitions, 3544 flow [2024-06-27 19:22:37,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:37,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:37,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:22:37,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-27 19:22:37,134 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:22:37,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:37,135 INFO L85 PathProgramCache]: Analyzing trace with hash 372144662, now seen corresponding path program 28 times [2024-06-27 19:22:37,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:37,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417361387] [2024-06-27 19:22:37,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:37,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:37,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:22:38,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:22:38,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:22:38,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417361387] [2024-06-27 19:22:38,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417361387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:22:38,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:22:38,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:22:38,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143714763] [2024-06-27 19:22:38,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:22:38,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:22:38,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:22:38,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:22:38,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:22:38,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:22:38,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 316 transitions, 3544 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:38,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:22:38,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:22:38,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:39,123 INFO L124 PetriNetUnfolderBase]: 866/1625 cut-off events. [2024-06-27 19:22:39,124 INFO L125 PetriNetUnfolderBase]: For 83869/83869 co-relation queries the response was YES. [2024-06-27 19:22:39,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9001 conditions, 1625 events. 866/1625 cut-off events. For 83869/83869 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 9728 event pairs, 166 based on Foata normal form. 2/1623 useless extension candidates. Maximal degree in co-relation 8815. Up to 1343 conditions per place. [2024-06-27 19:22:39,142 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 261 selfloop transitions, 70 changer transitions 0/333 dead transitions. [2024-06-27 19:22:39,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 333 transitions, 4302 flow [2024-06-27 19:22:39,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:22:39,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:22:39,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-27 19:22:39,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 19:22:39,142 INFO L175 Difference]: Start difference. First operand has 410 places, 316 transitions, 3544 flow. Second operand 10 states and 110 transitions. [2024-06-27 19:22:39,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 333 transitions, 4302 flow [2024-06-27 19:22:39,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 333 transitions, 4146 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-27 19:22:39,676 INFO L231 Difference]: Finished difference. Result has 412 places, 317 transitions, 3578 flow [2024-06-27 19:22:39,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3390, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3578, PETRI_PLACES=412, PETRI_TRANSITIONS=317} [2024-06-27 19:22:39,676 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 382 predicate places. [2024-06-27 19:22:39,676 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 317 transitions, 3578 flow [2024-06-27 19:22:39,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:39,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:39,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:22:39,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-27 19:22:39,677 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:22:39,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:39,678 INFO L85 PathProgramCache]: Analyzing trace with hash 372139082, now seen corresponding path program 29 times [2024-06-27 19:22:39,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:39,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080301269] [2024-06-27 19:22:39,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:39,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:39,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:22:40,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:22:40,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:22:40,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080301269] [2024-06-27 19:22:40,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080301269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:22:40,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:22:40,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:22:40,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376435185] [2024-06-27 19:22:40,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:22:40,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:22:40,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:22:40,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:22:40,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:22:40,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:22:40,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 317 transitions, 3578 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:40,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:22:40,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:22:40,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:41,556 INFO L124 PetriNetUnfolderBase]: 899/1690 cut-off events. [2024-06-27 19:22:41,556 INFO L125 PetriNetUnfolderBase]: For 136294/136294 co-relation queries the response was YES. [2024-06-27 19:22:41,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10327 conditions, 1690 events. 899/1690 cut-off events. For 136294/136294 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 10123 event pairs, 202 based on Foata normal form. 2/1688 useless extension candidates. Maximal degree in co-relation 10140. Up to 1431 conditions per place. [2024-06-27 19:22:41,588 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 292 selfloop transitions, 50 changer transitions 1/345 dead transitions. [2024-06-27 19:22:41,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 345 transitions, 4661 flow [2024-06-27 19:22:41,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:22:41,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:22:41,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-27 19:22:41,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34946236559139787 [2024-06-27 19:22:41,590 INFO L175 Difference]: Start difference. First operand has 412 places, 317 transitions, 3578 flow. Second operand 12 states and 130 transitions. [2024-06-27 19:22:41,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 345 transitions, 4661 flow [2024-06-27 19:22:42,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 345 transitions, 4505 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-27 19:22:42,288 INFO L231 Difference]: Finished difference. Result has 420 places, 325 transitions, 3668 flow [2024-06-27 19:22:42,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3426, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3668, PETRI_PLACES=420, PETRI_TRANSITIONS=325} [2024-06-27 19:22:42,289 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 390 predicate places. [2024-06-27 19:22:42,289 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 325 transitions, 3668 flow [2024-06-27 19:22:42,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:42,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:42,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:22:42,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-27 19:22:42,290 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:22:42,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:42,290 INFO L85 PathProgramCache]: Analyzing trace with hash 379496312, now seen corresponding path program 30 times [2024-06-27 19:22:42,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:42,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098043169] [2024-06-27 19:22:42,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:42,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:42,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:22:43,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:22:43,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:22:43,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098043169] [2024-06-27 19:22:43,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098043169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:22:43,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:22:43,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:22:43,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311457168] [2024-06-27 19:22:43,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:22:43,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:22:43,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:22:43,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:22:43,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:22:43,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:22:43,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 325 transitions, 3668 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:43,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:22:43,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:22:43,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:44,134 INFO L124 PetriNetUnfolderBase]: 901/1698 cut-off events. [2024-06-27 19:22:44,134 INFO L125 PetriNetUnfolderBase]: For 140838/140838 co-relation queries the response was YES. [2024-06-27 19:22:44,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10639 conditions, 1698 events. 901/1698 cut-off events. For 140838/140838 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 10222 event pairs, 191 based on Foata normal form. 2/1696 useless extension candidates. Maximal degree in co-relation 10448. Up to 1418 conditions per place. [2024-06-27 19:22:44,156 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 264 selfloop transitions, 76 changer transitions 0/342 dead transitions. [2024-06-27 19:22:44,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 342 transitions, 4470 flow [2024-06-27 19:22:44,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:22:44,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:22:44,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-27 19:22:44,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-27 19:22:44,157 INFO L175 Difference]: Start difference. First operand has 420 places, 325 transitions, 3668 flow. Second operand 10 states and 109 transitions. [2024-06-27 19:22:44,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 342 transitions, 4470 flow [2024-06-27 19:22:44,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 342 transitions, 4355 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-27 19:22:44,913 INFO L231 Difference]: Finished difference. Result has 424 places, 326 transitions, 3757 flow [2024-06-27 19:22:44,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3553, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3757, PETRI_PLACES=424, PETRI_TRANSITIONS=326} [2024-06-27 19:22:44,914 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 394 predicate places. [2024-06-27 19:22:44,914 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 326 transitions, 3757 flow [2024-06-27 19:22:44,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:44,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:44,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:22:44,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-27 19:22:44,915 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:22:44,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:44,915 INFO L85 PathProgramCache]: Analyzing trace with hash 379504248, now seen corresponding path program 7 times [2024-06-27 19:22:44,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:44,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000284067] [2024-06-27 19:22:44,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:44,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:44,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:22:46,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:22:46,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:22:46,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000284067] [2024-06-27 19:22:46,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000284067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:22:46,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:22:46,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:22:46,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262661435] [2024-06-27 19:22:46,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:22:46,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:22:46,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:22:46,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:22:46,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:22:46,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:22:46,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 326 transitions, 3757 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:46,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:22:46,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:22:46,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:47,140 INFO L124 PetriNetUnfolderBase]: 917/1734 cut-off events. [2024-06-27 19:22:47,140 INFO L125 PetriNetUnfolderBase]: For 185946/185946 co-relation queries the response was YES. [2024-06-27 19:22:47,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10823 conditions, 1734 events. 917/1734 cut-off events. For 185946/185946 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 10480 event pairs, 197 based on Foata normal form. 10/1740 useless extension candidates. Maximal degree in co-relation 10632. Up to 1362 conditions per place. [2024-06-27 19:22:47,162 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 258 selfloop transitions, 77 changer transitions 9/346 dead transitions. [2024-06-27 19:22:47,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 346 transitions, 4565 flow [2024-06-27 19:22:47,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:22:47,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:22:47,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-27 19:22:47,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-27 19:22:47,163 INFO L175 Difference]: Start difference. First operand has 424 places, 326 transitions, 3757 flow. Second operand 10 states and 115 transitions. [2024-06-27 19:22:47,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 346 transitions, 4565 flow [2024-06-27 19:22:48,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 346 transitions, 4371 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-27 19:22:48,079 INFO L231 Difference]: Finished difference. Result has 426 places, 321 transitions, 3680 flow [2024-06-27 19:22:48,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3563, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3680, PETRI_PLACES=426, PETRI_TRANSITIONS=321} [2024-06-27 19:22:48,080 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 396 predicate places. [2024-06-27 19:22:48,080 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 321 transitions, 3680 flow [2024-06-27 19:22:48,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:48,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:48,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:22:48,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-27 19:22:48,080 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:22:48,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:48,081 INFO L85 PathProgramCache]: Analyzing trace with hash 372354408, now seen corresponding path program 8 times [2024-06-27 19:22:48,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:48,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869705171] [2024-06-27 19:22:48,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:48,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:48,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:22:49,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:22:49,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:22:49,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869705171] [2024-06-27 19:22:49,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869705171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:22:49,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:22:49,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:22:49,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753179374] [2024-06-27 19:22:49,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:22:49,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:22:49,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:22:49,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:22:49,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:22:49,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:22:49,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 321 transitions, 3680 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:49,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:22:49,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:22:49,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:49,785 INFO L124 PetriNetUnfolderBase]: 889/1690 cut-off events. [2024-06-27 19:22:49,785 INFO L125 PetriNetUnfolderBase]: For 165951/165951 co-relation queries the response was YES. [2024-06-27 19:22:49,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10110 conditions, 1690 events. 889/1690 cut-off events. For 165951/165951 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 10237 event pairs, 191 based on Foata normal form. 10/1696 useless extension candidates. Maximal degree in co-relation 9918. Up to 1392 conditions per place. [2024-06-27 19:22:49,806 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 261 selfloop transitions, 63 changer transitions 17/343 dead transitions. [2024-06-27 19:22:49,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 343 transitions, 4496 flow [2024-06-27 19:22:49,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:22:49,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:22:49,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-27 19:22:49,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 19:22:49,807 INFO L175 Difference]: Start difference. First operand has 426 places, 321 transitions, 3680 flow. Second operand 11 states and 121 transitions. [2024-06-27 19:22:49,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 343 transitions, 4496 flow [2024-06-27 19:22:50,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 343 transitions, 4336 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 19:22:50,574 INFO L231 Difference]: Finished difference. Result has 425 places, 314 transitions, 3577 flow [2024-06-27 19:22:50,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3520, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3577, PETRI_PLACES=425, PETRI_TRANSITIONS=314} [2024-06-27 19:22:50,574 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 395 predicate places. [2024-06-27 19:22:50,575 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 314 transitions, 3577 flow [2024-06-27 19:22:50,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:50,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:50,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:22:50,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-27 19:22:50,575 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:22:50,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:50,575 INFO L85 PathProgramCache]: Analyzing trace with hash 379773018, now seen corresponding path program 9 times [2024-06-27 19:22:50,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:50,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278092683] [2024-06-27 19:22:50,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:50,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:50,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:22:51,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:22:51,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:22:51,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278092683] [2024-06-27 19:22:51,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278092683] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:22:51,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:22:51,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:22:51,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451784239] [2024-06-27 19:22:51,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:22:51,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:22:51,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:22:51,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:22:51,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:22:51,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:22:51,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 314 transitions, 3577 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:51,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:22:51,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:22:51,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:52,561 INFO L124 PetriNetUnfolderBase]: 905/1730 cut-off events. [2024-06-27 19:22:52,561 INFO L125 PetriNetUnfolderBase]: For 220006/220006 co-relation queries the response was YES. [2024-06-27 19:22:52,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11531 conditions, 1730 events. 905/1730 cut-off events. For 220006/220006 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 10487 event pairs, 197 based on Foata normal form. 8/1734 useless extension candidates. Maximal degree in co-relation 11340. Up to 1248 conditions per place. [2024-06-27 19:22:52,583 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 259 selfloop transitions, 70 changer transitions 11/342 dead transitions. [2024-06-27 19:22:52,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 342 transitions, 4683 flow [2024-06-27 19:22:52,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:22:52,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:22:52,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-27 19:22:52,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-27 19:22:52,584 INFO L175 Difference]: Start difference. First operand has 425 places, 314 transitions, 3577 flow. Second operand 11 states and 125 transitions. [2024-06-27 19:22:52,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 342 transitions, 4683 flow [2024-06-27 19:22:53,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 342 transitions, 4506 flow, removed 10 selfloop flow, removed 13 redundant places. [2024-06-27 19:22:53,520 INFO L231 Difference]: Finished difference. Result has 417 places, 308 transitions, 3488 flow [2024-06-27 19:22:53,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3410, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3488, PETRI_PLACES=417, PETRI_TRANSITIONS=308} [2024-06-27 19:22:53,521 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 387 predicate places. [2024-06-27 19:22:53,521 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 308 transitions, 3488 flow [2024-06-27 19:22:53,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:53,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:53,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:22:53,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-27 19:22:53,521 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:22:53,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:53,521 INFO L85 PathProgramCache]: Analyzing trace with hash 172837292, now seen corresponding path program 31 times [2024-06-27 19:22:53,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:53,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990835201] [2024-06-27 19:22:53,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:53,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:53,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:22:54,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:22:54,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:22:54,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990835201] [2024-06-27 19:22:54,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990835201] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:22:54,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:22:54,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:22:54,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612850847] [2024-06-27 19:22:54,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:22:54,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:22:54,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:22:54,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:22:54,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:22:54,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:22:54,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 308 transitions, 3488 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:54,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:22:54,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:22:54,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:55,276 INFO L124 PetriNetUnfolderBase]: 863/1644 cut-off events. [2024-06-27 19:22:55,276 INFO L125 PetriNetUnfolderBase]: For 178201/178201 co-relation queries the response was YES. [2024-06-27 19:22:55,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11092 conditions, 1644 events. 863/1644 cut-off events. For 178201/178201 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 9863 event pairs, 191 based on Foata normal form. 2/1642 useless extension candidates. Maximal degree in co-relation 10904. Up to 1424 conditions per place. [2024-06-27 19:22:55,296 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 269 selfloop transitions, 58 changer transitions 0/329 dead transitions. [2024-06-27 19:22:55,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 329 transitions, 4520 flow [2024-06-27 19:22:55,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:22:55,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:22:55,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-27 19:22:55,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-27 19:22:55,297 INFO L175 Difference]: Start difference. First operand has 417 places, 308 transitions, 3488 flow. Second operand 10 states and 109 transitions. [2024-06-27 19:22:55,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 329 transitions, 4520 flow [2024-06-27 19:22:56,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 329 transitions, 4365 flow, removed 11 selfloop flow, removed 12 redundant places. [2024-06-27 19:22:56,113 INFO L231 Difference]: Finished difference. Result has 410 places, 310 transitions, 3557 flow [2024-06-27 19:22:56,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3341, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3557, PETRI_PLACES=410, PETRI_TRANSITIONS=310} [2024-06-27 19:22:56,114 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 380 predicate places. [2024-06-27 19:22:56,114 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 310 transitions, 3557 flow [2024-06-27 19:22:56,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:56,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:56,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:22:56,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-27 19:22:56,114 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:22:56,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:56,114 INFO L85 PathProgramCache]: Analyzing trace with hash -679864886, now seen corresponding path program 10 times [2024-06-27 19:22:56,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:56,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585999073] [2024-06-27 19:22:56,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:56,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:56,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:22:57,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:22:57,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:22:57,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585999073] [2024-06-27 19:22:57,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585999073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:22:57,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:22:57,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:22:57,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240204731] [2024-06-27 19:22:57,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:22:57,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:22:57,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:22:57,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:22:57,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:22:57,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:22:57,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 310 transitions, 3557 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:57,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:22:57,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:22:57,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:58,043 INFO L124 PetriNetUnfolderBase]: 879/1680 cut-off events. [2024-06-27 19:22:58,044 INFO L125 PetriNetUnfolderBase]: For 209404/209404 co-relation queries the response was YES. [2024-06-27 19:22:58,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11131 conditions, 1680 events. 879/1680 cut-off events. For 209404/209404 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 10099 event pairs, 209 based on Foata normal form. 10/1686 useless extension candidates. Maximal degree in co-relation 10946. Up to 1472 conditions per place. [2024-06-27 19:22:58,065 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 268 selfloop transitions, 46 changer transitions 17/333 dead transitions. [2024-06-27 19:22:58,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 333 transitions, 4354 flow [2024-06-27 19:22:58,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:22:58,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:22:58,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-27 19:22:58,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-27 19:22:58,066 INFO L175 Difference]: Start difference. First operand has 410 places, 310 transitions, 3557 flow. Second operand 10 states and 114 transitions. [2024-06-27 19:22:58,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 333 transitions, 4354 flow [2024-06-27 19:22:58,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 333 transitions, 4232 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-27 19:22:58,960 INFO L231 Difference]: Finished difference. Result has 414 places, 302 transitions, 3429 flow [2024-06-27 19:22:58,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3435, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3429, PETRI_PLACES=414, PETRI_TRANSITIONS=302} [2024-06-27 19:22:58,961 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 384 predicate places. [2024-06-27 19:22:58,961 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 302 transitions, 3429 flow [2024-06-27 19:22:58,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:58,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:58,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:22:58,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-27 19:22:58,961 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:22:58,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:58,961 INFO L85 PathProgramCache]: Analyzing trace with hash 178407062, now seen corresponding path program 32 times [2024-06-27 19:22:58,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:58,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461629845] [2024-06-27 19:22:58,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:58,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:58,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:23:00,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:23:00,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:23:00,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461629845] [2024-06-27 19:23:00,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461629845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:23:00,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:23:00,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:23:00,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782699257] [2024-06-27 19:23:00,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:23:00,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:23:00,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:23:00,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:23:00,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:23:00,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:23:00,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 302 transitions, 3429 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:00,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:23:00,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:23:00,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:23:01,050 INFO L124 PetriNetUnfolderBase]: 840/1607 cut-off events. [2024-06-27 19:23:01,050 INFO L125 PetriNetUnfolderBase]: For 161185/161185 co-relation queries the response was YES. [2024-06-27 19:23:01,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10539 conditions, 1607 events. 840/1607 cut-off events. For 161185/161185 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 9596 event pairs, 200 based on Foata normal form. 2/1605 useless extension candidates. Maximal degree in co-relation 10352. Up to 1418 conditions per place. [2024-06-27 19:23:01,070 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 262 selfloop transitions, 56 changer transitions 0/320 dead transitions. [2024-06-27 19:23:01,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 320 transitions, 4153 flow [2024-06-27 19:23:01,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:23:01,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:23:01,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-27 19:23:01,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-27 19:23:01,071 INFO L175 Difference]: Start difference. First operand has 414 places, 302 transitions, 3429 flow. Second operand 10 states and 107 transitions. [2024-06-27 19:23:01,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 320 transitions, 4153 flow [2024-06-27 19:23:01,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 320 transitions, 3959 flow, removed 28 selfloop flow, removed 13 redundant places. [2024-06-27 19:23:01,950 INFO L231 Difference]: Finished difference. Result has 407 places, 302 transitions, 3351 flow [2024-06-27 19:23:01,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3235, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3351, PETRI_PLACES=407, PETRI_TRANSITIONS=302} [2024-06-27 19:23:01,951 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 377 predicate places. [2024-06-27 19:23:01,951 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 302 transitions, 3351 flow [2024-06-27 19:23:01,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:01,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:23:01,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:23:01,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-27 19:23:01,952 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:23:01,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:23:01,952 INFO L85 PathProgramCache]: Analyzing trace with hash 178414998, now seen corresponding path program 11 times [2024-06-27 19:23:01,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:23:01,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919026943] [2024-06-27 19:23:01,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:23:01,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:23:01,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:23:02,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:23:02,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:23:02,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919026943] [2024-06-27 19:23:02,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919026943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:23:02,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:23:02,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:23:02,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927770820] [2024-06-27 19:23:02,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:23:02,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:23:02,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:23:02,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:23:02,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:23:03,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:23:03,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 302 transitions, 3351 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:03,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:23:03,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:23:03,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:23:03,540 INFO L124 PetriNetUnfolderBase]: 842/1617 cut-off events. [2024-06-27 19:23:03,540 INFO L125 PetriNetUnfolderBase]: For 176208/176208 co-relation queries the response was YES. [2024-06-27 19:23:03,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9966 conditions, 1617 events. 842/1617 cut-off events. For 176208/176208 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 9694 event pairs, 198 based on Foata normal form. 10/1623 useless extension candidates. Maximal degree in co-relation 9782. Up to 1374 conditions per place. [2024-06-27 19:23:03,559 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 256 selfloop transitions, 51 changer transitions 15/324 dead transitions. [2024-06-27 19:23:03,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 324 transitions, 4125 flow [2024-06-27 19:23:03,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:23:03,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:23:03,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-27 19:23:03,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-27 19:23:03,560 INFO L175 Difference]: Start difference. First operand has 407 places, 302 transitions, 3351 flow. Second operand 10 states and 112 transitions. [2024-06-27 19:23:03,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 324 transitions, 4125 flow [2024-06-27 19:23:04,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 324 transitions, 4005 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 19:23:04,230 INFO L231 Difference]: Finished difference. Result has 407 places, 295 transitions, 3274 flow [2024-06-27 19:23:04,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3231, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3274, PETRI_PLACES=407, PETRI_TRANSITIONS=295} [2024-06-27 19:23:04,231 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 377 predicate places. [2024-06-27 19:23:04,231 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 295 transitions, 3274 flow [2024-06-27 19:23:04,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:04,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:23:04,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:23:04,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-27 19:23:04,232 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:23:04,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:23:04,232 INFO L85 PathProgramCache]: Analyzing trace with hash 172693142, now seen corresponding path program 33 times [2024-06-27 19:23:04,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:23:04,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903326166] [2024-06-27 19:23:04,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:23:04,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:23:04,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:23:05,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:23:05,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:23:05,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903326166] [2024-06-27 19:23:05,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903326166] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:23:05,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:23:05,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:23:05,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172979358] [2024-06-27 19:23:05,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:23:05,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:23:05,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:23:05,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:23:05,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:23:05,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:23:05,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 295 transitions, 3274 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:05,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:23:05,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:23:05,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:23:06,249 INFO L124 PetriNetUnfolderBase]: 810/1557 cut-off events. [2024-06-27 19:23:06,249 INFO L125 PetriNetUnfolderBase]: For 137880/137880 co-relation queries the response was YES. [2024-06-27 19:23:06,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9746 conditions, 1557 events. 810/1557 cut-off events. For 137880/137880 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 9281 event pairs, 184 based on Foata normal form. 2/1555 useless extension candidates. Maximal degree in co-relation 9562. Up to 1354 conditions per place. [2024-06-27 19:23:06,320 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 256 selfloop transitions, 55 changer transitions 0/313 dead transitions. [2024-06-27 19:23:06,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 313 transitions, 4004 flow [2024-06-27 19:23:06,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:23:06,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:23:06,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-27 19:23:06,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-27 19:23:06,321 INFO L175 Difference]: Start difference. First operand has 407 places, 295 transitions, 3274 flow. Second operand 10 states and 105 transitions. [2024-06-27 19:23:06,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 313 transitions, 4004 flow [2024-06-27 19:23:06,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 313 transitions, 3894 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 19:23:06,972 INFO L231 Difference]: Finished difference. Result has 401 places, 296 transitions, 3328 flow [2024-06-27 19:23:06,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3164, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3328, PETRI_PLACES=401, PETRI_TRANSITIONS=296} [2024-06-27 19:23:06,973 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 371 predicate places. [2024-06-27 19:23:06,973 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 296 transitions, 3328 flow [2024-06-27 19:23:06,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:06,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:23:06,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:23:06,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-27 19:23:06,974 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:23:06,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:23:06,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1236912004, now seen corresponding path program 34 times [2024-06-27 19:23:06,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:23:06,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338240761] [2024-06-27 19:23:06,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:23:06,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:23:06,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:23:08,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:23:08,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:23:08,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338240761] [2024-06-27 19:23:08,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338240761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:23:08,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:23:08,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:23:08,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937337019] [2024-06-27 19:23:08,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:23:08,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:23:08,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:23:08,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:23:08,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:23:08,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:23:08,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 296 transitions, 3328 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:08,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:23:08,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:23:08,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:23:08,767 INFO L124 PetriNetUnfolderBase]: 814/1563 cut-off events. [2024-06-27 19:23:08,767 INFO L125 PetriNetUnfolderBase]: For 131003/131003 co-relation queries the response was YES. [2024-06-27 19:23:08,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9811 conditions, 1563 events. 814/1563 cut-off events. For 131003/131003 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 9323 event pairs, 195 based on Foata normal form. 2/1561 useless extension candidates. Maximal degree in co-relation 9630. Up to 1331 conditions per place. [2024-06-27 19:23:08,784 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 244 selfloop transitions, 66 changer transitions 0/312 dead transitions. [2024-06-27 19:23:08,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 312 transitions, 4078 flow [2024-06-27 19:23:08,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:23:08,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:23:08,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-27 19:23:08,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-27 19:23:08,785 INFO L175 Difference]: Start difference. First operand has 401 places, 296 transitions, 3328 flow. Second operand 10 states and 109 transitions. [2024-06-27 19:23:08,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 312 transitions, 4078 flow [2024-06-27 19:23:09,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 312 transitions, 3924 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-27 19:23:09,482 INFO L231 Difference]: Finished difference. Result has 403 places, 297 transitions, 3360 flow [2024-06-27 19:23:09,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3176, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3360, PETRI_PLACES=403, PETRI_TRANSITIONS=297} [2024-06-27 19:23:09,482 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 373 predicate places. [2024-06-27 19:23:09,482 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 297 transitions, 3360 flow [2024-06-27 19:23:09,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:09,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:23:09,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:23:09,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-27 19:23:09,483 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:23:09,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:23:09,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1236904068, now seen corresponding path program 12 times [2024-06-27 19:23:09,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:23:09,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117582755] [2024-06-27 19:23:09,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:23:09,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:23:09,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:23:10,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:23:10,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:23:10,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117582755] [2024-06-27 19:23:10,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117582755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:23:10,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:23:10,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:23:10,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057776805] [2024-06-27 19:23:10,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:23:10,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:23:10,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:23:10,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:23:10,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:23:10,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:23:10,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 297 transitions, 3360 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:10,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:23:10,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:23:10,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:23:11,192 INFO L124 PetriNetUnfolderBase]: 830/1599 cut-off events. [2024-06-27 19:23:11,192 INFO L125 PetriNetUnfolderBase]: For 166880/166880 co-relation queries the response was YES. [2024-06-27 19:23:11,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9892 conditions, 1599 events. 830/1599 cut-off events. For 166880/166880 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 9560 event pairs, 199 based on Foata normal form. 10/1605 useless extension candidates. Maximal degree in co-relation 9710. Up to 1292 conditions per place. [2024-06-27 19:23:11,210 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 235 selfloop transitions, 64 changer transitions 15/316 dead transitions. [2024-06-27 19:23:11,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 316 transitions, 4112 flow [2024-06-27 19:23:11,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:23:11,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:23:11,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-27 19:23:11,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-27 19:23:11,211 INFO L175 Difference]: Start difference. First operand has 403 places, 297 transitions, 3360 flow. Second operand 10 states and 115 transitions. [2024-06-27 19:23:11,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 316 transitions, 4112 flow [2024-06-27 19:23:11,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 316 transitions, 3935 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-27 19:23:11,862 INFO L231 Difference]: Finished difference. Result has 405 places, 290 transitions, 3266 flow [2024-06-27 19:23:11,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3183, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3266, PETRI_PLACES=405, PETRI_TRANSITIONS=290} [2024-06-27 19:23:11,863 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 375 predicate places. [2024-06-27 19:23:11,863 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 290 transitions, 3266 flow [2024-06-27 19:23:11,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:11,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:23:11,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:23:11,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-27 19:23:11,863 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:23:11,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:23:11,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1244263654, now seen corresponding path program 35 times [2024-06-27 19:23:11,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:23:11,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909777162] [2024-06-27 19:23:11,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:23:11,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:23:11,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:23:13,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:23:13,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:23:13,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909777162] [2024-06-27 19:23:13,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909777162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:23:13,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:23:13,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:23:13,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706052177] [2024-06-27 19:23:13,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:23:13,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:23:13,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:23:13,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:23:13,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:23:13,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:23:13,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 290 transitions, 3266 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:13,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:23:13,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:23:13,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:23:13,928 INFO L124 PetriNetUnfolderBase]: 798/1539 cut-off events. [2024-06-27 19:23:13,929 INFO L125 PetriNetUnfolderBase]: For 132419/132419 co-relation queries the response was YES. [2024-06-27 19:23:13,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9661 conditions, 1539 events. 798/1539 cut-off events. For 132419/132419 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 9170 event pairs, 197 based on Foata normal form. 2/1537 useless extension candidates. Maximal degree in co-relation 9478. Up to 1313 conditions per place. [2024-06-27 19:23:13,947 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 242 selfloop transitions, 62 changer transitions 0/306 dead transitions. [2024-06-27 19:23:13,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 306 transitions, 4004 flow [2024-06-27 19:23:13,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:23:13,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:23:13,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-27 19:23:13,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-27 19:23:13,948 INFO L175 Difference]: Start difference. First operand has 405 places, 290 transitions, 3266 flow. Second operand 10 states and 109 transitions. [2024-06-27 19:23:13,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 306 transitions, 4004 flow [2024-06-27 19:23:14,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 306 transitions, 3866 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-27 19:23:14,611 INFO L231 Difference]: Finished difference. Result has 400 places, 291 transitions, 3306 flow [2024-06-27 19:23:14,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3130, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3306, PETRI_PLACES=400, PETRI_TRANSITIONS=291} [2024-06-27 19:23:14,611 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 370 predicate places. [2024-06-27 19:23:14,612 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 291 transitions, 3306 flow [2024-06-27 19:23:14,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:14,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:23:14,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:23:14,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-27 19:23:14,612 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:23:14,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:23:14,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1020121438, now seen corresponding path program 13 times [2024-06-27 19:23:14,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:23:14,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542590463] [2024-06-27 19:23:14,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:23:14,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:23:14,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:23:15,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:23:15,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:23:15,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542590463] [2024-06-27 19:23:15,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542590463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:23:15,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:23:15,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:23:15,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365608997] [2024-06-27 19:23:15,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:23:15,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:23:15,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:23:15,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:23:15,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:23:15,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:23:15,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 291 transitions, 3306 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:15,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:23:15,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:23:15,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:23:16,011 INFO L124 PetriNetUnfolderBase]: 846/1639 cut-off events. [2024-06-27 19:23:16,011 INFO L125 PetriNetUnfolderBase]: For 210693/210693 co-relation queries the response was YES. [2024-06-27 19:23:16,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11255 conditions, 1639 events. 846/1639 cut-off events. For 210693/210693 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 9842 event pairs, 335 based on Foata normal form. 8/1646 useless extension candidates. Maximal degree in co-relation 11074. Up to 1426 conditions per place. [2024-06-27 19:23:16,032 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 282 selfloop transitions, 19 changer transitions 10/313 dead transitions. [2024-06-27 19:23:16,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 313 transitions, 4284 flow [2024-06-27 19:23:16,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:23:16,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:23:16,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-27 19:23:16,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-27 19:23:16,033 INFO L175 Difference]: Start difference. First operand has 400 places, 291 transitions, 3306 flow. Second operand 10 states and 108 transitions. [2024-06-27 19:23:16,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 313 transitions, 4284 flow [2024-06-27 19:23:16,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 313 transitions, 4118 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-27 19:23:16,842 INFO L231 Difference]: Finished difference. Result has 402 places, 288 transitions, 3158 flow [2024-06-27 19:23:16,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3140, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3158, PETRI_PLACES=402, PETRI_TRANSITIONS=288} [2024-06-27 19:23:16,843 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 372 predicate places. [2024-06-27 19:23:16,843 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 288 transitions, 3158 flow [2024-06-27 19:23:16,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:16,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:23:16,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:23:16,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-27 19:23:16,843 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:23:16,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:23:16,843 INFO L85 PathProgramCache]: Analyzing trace with hash 704308318, now seen corresponding path program 14 times [2024-06-27 19:23:16,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:23:16,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29865227] [2024-06-27 19:23:16,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:23:16,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:23:16,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:23:18,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:23:18,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:23:18,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29865227] [2024-06-27 19:23:18,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29865227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:23:18,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:23:18,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:23:18,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687861830] [2024-06-27 19:23:18,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:23:18,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:23:18,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:23:18,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:23:18,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:23:18,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:23:18,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 288 transitions, 3158 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:18,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:23:18,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:23:18,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:23:18,867 INFO L124 PetriNetUnfolderBase]: 837/1624 cut-off events. [2024-06-27 19:23:18,868 INFO L125 PetriNetUnfolderBase]: For 222660/222660 co-relation queries the response was YES. [2024-06-27 19:23:18,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10815 conditions, 1624 events. 837/1624 cut-off events. For 222660/222660 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 9711 event pairs, 348 based on Foata normal form. 12/1635 useless extension candidates. Maximal degree in co-relation 10633. Up to 1513 conditions per place. [2024-06-27 19:23:18,886 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 272 selfloop transitions, 24 changer transitions 6/304 dead transitions. [2024-06-27 19:23:18,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 304 transitions, 3886 flow [2024-06-27 19:23:18,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:23:18,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:23:18,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-27 19:23:18,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-27 19:23:18,887 INFO L175 Difference]: Start difference. First operand has 402 places, 288 transitions, 3158 flow. Second operand 10 states and 106 transitions. [2024-06-27 19:23:18,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 304 transitions, 3886 flow [2024-06-27 19:23:19,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 304 transitions, 3851 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 19:23:19,737 INFO L231 Difference]: Finished difference. Result has 399 places, 287 transitions, 3207 flow [2024-06-27 19:23:19,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3123, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3207, PETRI_PLACES=399, PETRI_TRANSITIONS=287} [2024-06-27 19:23:19,737 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 369 predicate places. [2024-06-27 19:23:19,737 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 287 transitions, 3207 flow [2024-06-27 19:23:19,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:19,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:23:19,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:23:19,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-27 19:23:19,738 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:23:19,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:23:19,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1244269234, now seen corresponding path program 36 times [2024-06-27 19:23:19,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:23:19,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076948135] [2024-06-27 19:23:19,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:23:19,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:23:19,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:23:20,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:23:20,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:23:20,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076948135] [2024-06-27 19:23:20,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076948135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:23:20,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:23:20,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:23:20,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449992298] [2024-06-27 19:23:20,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:23:20,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:23:20,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:23:20,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:23:20,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:23:20,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:23:20,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 287 transitions, 3207 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:20,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:23:20,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:23:20,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:23:21,428 INFO L124 PetriNetUnfolderBase]: 829/1612 cut-off events. [2024-06-27 19:23:21,429 INFO L125 PetriNetUnfolderBase]: For 169987/169987 co-relation queries the response was YES. [2024-06-27 19:23:21,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10789 conditions, 1612 events. 829/1612 cut-off events. For 169987/169987 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 9657 event pairs, 226 based on Foata normal form. 2/1610 useless extension candidates. Maximal degree in co-relation 10609. Up to 1135 conditions per place. [2024-06-27 19:23:21,448 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 200 selfloop transitions, 101 changer transitions 0/303 dead transitions. [2024-06-27 19:23:21,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 303 transitions, 3931 flow [2024-06-27 19:23:21,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:23:21,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:23:21,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-27 19:23:21,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-27 19:23:21,449 INFO L175 Difference]: Start difference. First operand has 399 places, 287 transitions, 3207 flow. Second operand 10 states and 112 transitions. [2024-06-27 19:23:21,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 303 transitions, 3931 flow [2024-06-27 19:23:22,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 303 transitions, 3841 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-27 19:23:22,294 INFO L231 Difference]: Finished difference. Result has 401 places, 288 transitions, 3375 flow [2024-06-27 19:23:22,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3117, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3375, PETRI_PLACES=401, PETRI_TRANSITIONS=288} [2024-06-27 19:23:22,295 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 371 predicate places. [2024-06-27 19:23:22,295 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 288 transitions, 3375 flow [2024-06-27 19:23:22,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:22,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:23:22,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:23:22,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-27 19:23:22,296 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:23:22,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:23:22,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1236635298, now seen corresponding path program 15 times [2024-06-27 19:23:22,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:23:22,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473833863] [2024-06-27 19:23:22,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:23:22,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:23:22,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:23:23,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:23:23,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:23:23,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473833863] [2024-06-27 19:23:23,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473833863] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:23:23,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:23:23,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:23:23,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144639126] [2024-06-27 19:23:23,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:23:23,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:23:23,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:23:23,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:23:23,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:23:23,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:23:23,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 288 transitions, 3375 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:23,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:23:23,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:23:23,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:23:24,021 INFO L124 PetriNetUnfolderBase]: 877/1712 cut-off events. [2024-06-27 19:23:24,021 INFO L125 PetriNetUnfolderBase]: For 255676/255676 co-relation queries the response was YES. [2024-06-27 19:23:24,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12593 conditions, 1712 events. 877/1712 cut-off events. For 255676/255676 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 10409 event pairs, 234 based on Foata normal form. 8/1716 useless extension candidates. Maximal degree in co-relation 12412. Up to 1339 conditions per place. [2024-06-27 19:23:24,042 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 239 selfloop transitions, 64 changer transitions 9/314 dead transitions. [2024-06-27 19:23:24,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 314 transitions, 4407 flow [2024-06-27 19:23:24,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:23:24,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:23:24,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-27 19:23:24,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-27 19:23:24,043 INFO L175 Difference]: Start difference. First operand has 401 places, 288 transitions, 3375 flow. Second operand 11 states and 124 transitions. [2024-06-27 19:23:24,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 314 transitions, 4407 flow [2024-06-27 19:23:25,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 314 transitions, 4159 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-27 19:23:25,075 INFO L231 Difference]: Finished difference. Result has 404 places, 284 transitions, 3231 flow [2024-06-27 19:23:25,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3127, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3231, PETRI_PLACES=404, PETRI_TRANSITIONS=284} [2024-06-27 19:23:25,075 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 374 predicate places. [2024-06-27 19:23:25,075 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 284 transitions, 3231 flow [2024-06-27 19:23:25,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:25,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:23:25,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:23:25,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-27 19:23:25,076 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:23:25,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:23:25,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1244053908, now seen corresponding path program 16 times [2024-06-27 19:23:25,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:23:25,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613704305] [2024-06-27 19:23:25,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:23:25,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:23:25,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:23:26,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:23:26,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:23:26,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613704305] [2024-06-27 19:23:26,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613704305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:23:26,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:23:26,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:23:26,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904765163] [2024-06-27 19:23:26,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:23:26,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:23:26,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:23:26,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:23:26,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:23:26,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:23:26,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 284 transitions, 3231 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:26,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:23:26,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:23:26,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:23:27,523 INFO L124 PetriNetUnfolderBase]: 873/1704 cut-off events. [2024-06-27 19:23:27,524 INFO L125 PetriNetUnfolderBase]: For 268866/268866 co-relation queries the response was YES. [2024-06-27 19:23:27,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12444 conditions, 1704 events. 873/1704 cut-off events. For 268866/268866 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 10365 event pairs, 238 based on Foata normal form. 10/1710 useless extension candidates. Maximal degree in co-relation 12262. Up to 1435 conditions per place. [2024-06-27 19:23:27,544 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 231 selfloop transitions, 56 changer transitions 16/305 dead transitions. [2024-06-27 19:23:27,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 305 transitions, 3975 flow [2024-06-27 19:23:27,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:23:27,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:23:27,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-27 19:23:27,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 19:23:27,545 INFO L175 Difference]: Start difference. First operand has 404 places, 284 transitions, 3231 flow. Second operand 11 states and 121 transitions. [2024-06-27 19:23:27,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 305 transitions, 3975 flow [2024-06-27 19:23:28,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 305 transitions, 3773 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-27 19:23:28,531 INFO L231 Difference]: Finished difference. Result has 399 places, 278 transitions, 3100 flow [2024-06-27 19:23:28,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3029, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3100, PETRI_PLACES=399, PETRI_TRANSITIONS=278} [2024-06-27 19:23:28,532 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 369 predicate places. [2024-06-27 19:23:28,532 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 278 transitions, 3100 flow [2024-06-27 19:23:28,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:28,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:23:28,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:23:28,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-27 19:23:28,532 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:23:28,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:23:28,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1443565444, now seen corresponding path program 37 times [2024-06-27 19:23:28,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:23:28,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023149745] [2024-06-27 19:23:28,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:23:28,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:23:28,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:23:29,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:23:29,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:23:29,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023149745] [2024-06-27 19:23:29,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023149745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:23:29,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:23:29,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:23:29,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641100401] [2024-06-27 19:23:29,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:23:29,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:23:29,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:23:29,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:23:29,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:23:29,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:23:29,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 278 transitions, 3100 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:29,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:23:29,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:23:29,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:23:30,593 INFO L124 PetriNetUnfolderBase]: 834/1631 cut-off events. [2024-06-27 19:23:30,593 INFO L125 PetriNetUnfolderBase]: For 209198/209198 co-relation queries the response was YES. [2024-06-27 19:23:30,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11719 conditions, 1631 events. 834/1631 cut-off events. For 209198/209198 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 9815 event pairs, 231 based on Foata normal form. 2/1629 useless extension candidates. Maximal degree in co-relation 11540. Up to 1425 conditions per place. [2024-06-27 19:23:30,612 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 233 selfloop transitions, 58 changer transitions 0/293 dead transitions. [2024-06-27 19:23:30,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 293 transitions, 3802 flow [2024-06-27 19:23:30,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:23:30,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:23:30,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-27 19:23:30,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-27 19:23:30,613 INFO L175 Difference]: Start difference. First operand has 399 places, 278 transitions, 3100 flow. Second operand 10 states and 105 transitions. [2024-06-27 19:23:30,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 293 transitions, 3802 flow [2024-06-27 19:23:31,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 293 transitions, 3677 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-27 19:23:31,607 INFO L231 Difference]: Finished difference. Result has 392 places, 279 transitions, 3147 flow [2024-06-27 19:23:31,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2977, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3147, PETRI_PLACES=392, PETRI_TRANSITIONS=279} [2024-06-27 19:23:31,608 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 362 predicate places. [2024-06-27 19:23:31,608 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 279 transitions, 3147 flow [2024-06-27 19:23:31,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:31,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:23:31,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:23:31,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-27 19:23:31,608 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:23:31,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:23:31,609 INFO L85 PathProgramCache]: Analyzing trace with hash 386521210, now seen corresponding path program 17 times [2024-06-27 19:23:31,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:23:31,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032716284] [2024-06-27 19:23:31,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:23:31,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:23:31,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:23:32,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:23:32,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:23:32,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032716284] [2024-06-27 19:23:32,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032716284] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:23:32,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:23:32,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:23:32,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342030812] [2024-06-27 19:23:32,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:23:32,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:23:32,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:23:32,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:23:32,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:23:32,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:23:32,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 279 transitions, 3147 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:32,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:23:32,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:23:32,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:23:33,270 INFO L124 PetriNetUnfolderBase]: 843/1654 cut-off events. [2024-06-27 19:23:33,270 INFO L125 PetriNetUnfolderBase]: For 225234/225234 co-relation queries the response was YES. [2024-06-27 19:23:33,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11545 conditions, 1654 events. 843/1654 cut-off events. For 225234/225234 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 10001 event pairs, 364 based on Foata normal form. 10/1663 useless extension candidates. Maximal degree in co-relation 11368. Up to 1511 conditions per place. [2024-06-27 19:23:33,291 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 259 selfloop transitions, 15 changer transitions 20/296 dead transitions. [2024-06-27 19:23:33,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 296 transitions, 3815 flow [2024-06-27 19:23:33,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:23:33,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:23:33,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 118 transitions. [2024-06-27 19:23:33,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3172043010752688 [2024-06-27 19:23:33,292 INFO L175 Difference]: Start difference. First operand has 392 places, 279 transitions, 3147 flow. Second operand 12 states and 118 transitions. [2024-06-27 19:23:33,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 296 transitions, 3815 flow [2024-06-27 19:23:34,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 296 transitions, 3655 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-27 19:23:34,279 INFO L231 Difference]: Finished difference. Result has 396 places, 268 transitions, 2922 flow [2024-06-27 19:23:34,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2987, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2922, PETRI_PLACES=396, PETRI_TRANSITIONS=268} [2024-06-27 19:23:34,280 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 366 predicate places. [2024-06-27 19:23:34,280 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 268 transitions, 2922 flow [2024-06-27 19:23:34,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:34,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:23:34,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:23:34,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-27 19:23:34,280 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:23:34,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:23:34,280 INFO L85 PathProgramCache]: Analyzing trace with hash 386530510, now seen corresponding path program 18 times [2024-06-27 19:23:34,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:23:34,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617195904] [2024-06-27 19:23:34,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:23:34,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:23:34,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:23:35,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:23:35,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:23:35,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617195904] [2024-06-27 19:23:35,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617195904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:23:35,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:23:35,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:23:35,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258854464] [2024-06-27 19:23:35,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:23:35,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:23:35,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:23:35,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:23:35,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:23:35,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:23:35,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 268 transitions, 2922 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:35,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:23:35,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:23:35,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:23:35,853 INFO L124 PetriNetUnfolderBase]: 779/1530 cut-off events. [2024-06-27 19:23:35,853 INFO L125 PetriNetUnfolderBase]: For 185783/185783 co-relation queries the response was YES. [2024-06-27 19:23:35,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10129 conditions, 1530 events. 779/1530 cut-off events. For 185783/185783 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 9120 event pairs, 340 based on Foata normal form. 8/1537 useless extension candidates. Maximal degree in co-relation 9951. Up to 1453 conditions per place. [2024-06-27 19:23:35,870 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 254 selfloop transitions, 9 changer transitions 18/283 dead transitions. [2024-06-27 19:23:35,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 283 transitions, 3544 flow [2024-06-27 19:23:35,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:23:35,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:23:35,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 104 transitions. [2024-06-27 19:23:35,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30498533724340177 [2024-06-27 19:23:35,871 INFO L175 Difference]: Start difference. First operand has 396 places, 268 transitions, 2922 flow. Second operand 11 states and 104 transitions. [2024-06-27 19:23:35,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 283 transitions, 3544 flow [2024-06-27 19:23:36,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 283 transitions, 3493 flow, removed 8 selfloop flow, removed 15 redundant places. [2024-06-27 19:23:36,600 INFO L231 Difference]: Finished difference. Result has 384 places, 260 transitions, 2835 flow [2024-06-27 19:23:36,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2873, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2835, PETRI_PLACES=384, PETRI_TRANSITIONS=260} [2024-06-27 19:23:36,601 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 354 predicate places. [2024-06-27 19:23:36,601 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 260 transitions, 2835 flow [2024-06-27 19:23:36,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:36,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:23:36,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:23:36,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-27 19:23:36,602 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:23:36,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:23:36,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1443571024, now seen corresponding path program 38 times [2024-06-27 19:23:36,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:23:36,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092196579] [2024-06-27 19:23:36,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:23:36,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:23:36,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:23:37,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:23:37,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:23:37,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092196579] [2024-06-27 19:23:37,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092196579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:23:37,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:23:37,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:23:37,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414808516] [2024-06-27 19:23:37,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:23:37,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:23:37,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:23:37,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:23:37,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:23:37,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:23:37,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 260 transitions, 2835 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:37,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:23:37,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:23:37,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:23:38,235 INFO L124 PetriNetUnfolderBase]: 758/1483 cut-off events. [2024-06-27 19:23:38,235 INFO L125 PetriNetUnfolderBase]: For 148169/148169 co-relation queries the response was YES. [2024-06-27 19:23:38,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9804 conditions, 1483 events. 758/1483 cut-off events. For 148169/148169 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 8754 event pairs, 210 based on Foata normal form. 2/1481 useless extension candidates. Maximal degree in co-relation 9631. Up to 1277 conditions per place. [2024-06-27 19:23:38,252 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 216 selfloop transitions, 57 changer transitions 0/275 dead transitions. [2024-06-27 19:23:38,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 275 transitions, 3483 flow [2024-06-27 19:23:38,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:23:38,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:23:38,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-27 19:23:38,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33548387096774196 [2024-06-27 19:23:38,253 INFO L175 Difference]: Start difference. First operand has 384 places, 260 transitions, 2835 flow. Second operand 10 states and 104 transitions. [2024-06-27 19:23:38,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 275 transitions, 3483 flow [2024-06-27 19:23:38,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 275 transitions, 3451 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-27 19:23:38,892 INFO L231 Difference]: Finished difference. Result has 373 places, 261 transitions, 2971 flow [2024-06-27 19:23:38,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2805, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2971, PETRI_PLACES=373, PETRI_TRANSITIONS=261} [2024-06-27 19:23:38,892 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 343 predicate places. [2024-06-27 19:23:38,892 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 261 transitions, 2971 flow [2024-06-27 19:23:38,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:38,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:23:38,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:23:38,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-27 19:23:38,893 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:23:38,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:23:38,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1437993318, now seen corresponding path program 19 times [2024-06-27 19:23:38,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:23:38,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952899829] [2024-06-27 19:23:38,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:23:38,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:23:38,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:23:40,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:23:40,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:23:40,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952899829] [2024-06-27 19:23:40,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952899829] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:23:40,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:23:40,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:23:40,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311523579] [2024-06-27 19:23:40,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:23:40,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:23:40,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:23:40,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:23:40,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:23:40,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:23:40,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 261 transitions, 2971 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:40,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:23:40,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:23:40,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:23:41,456 INFO L124 PetriNetUnfolderBase]: 760/1493 cut-off events. [2024-06-27 19:23:41,456 INFO L125 PetriNetUnfolderBase]: For 150717/150717 co-relation queries the response was YES. [2024-06-27 19:23:41,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9455 conditions, 1493 events. 760/1493 cut-off events. For 150717/150717 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 8846 event pairs, 216 based on Foata normal form. 10/1499 useless extension candidates. Maximal degree in co-relation 9286. Up to 1045 conditions per place. [2024-06-27 19:23:41,472 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 189 selfloop transitions, 81 changer transitions 7/279 dead transitions. [2024-06-27 19:23:41,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 279 transitions, 3627 flow [2024-06-27 19:23:41,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:23:41,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:23:41,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-27 19:23:41,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-27 19:23:41,473 INFO L175 Difference]: Start difference. First operand has 373 places, 261 transitions, 2971 flow. Second operand 10 states and 114 transitions. [2024-06-27 19:23:41,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 279 transitions, 3627 flow [2024-06-27 19:23:42,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 279 transitions, 3471 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-27 19:23:42,164 INFO L231 Difference]: Finished difference. Result has 375 places, 258 transitions, 2959 flow [2024-06-27 19:23:42,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2815, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2959, PETRI_PLACES=375, PETRI_TRANSITIONS=258} [2024-06-27 19:23:42,165 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 345 predicate places. [2024-06-27 19:23:42,165 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 258 transitions, 2959 flow [2024-06-27 19:23:42,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:42,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:23:42,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:23:42,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-27 19:23:42,166 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:23:42,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:23:42,166 INFO L85 PathProgramCache]: Analyzing trace with hash 439792394, now seen corresponding path program 39 times [2024-06-27 19:23:42,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:23:42,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045456207] [2024-06-27 19:23:42,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:23:42,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:23:42,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:23:43,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:23:43,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:23:43,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045456207] [2024-06-27 19:23:43,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045456207] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:23:43,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:23:43,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:23:43,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918631232] [2024-06-27 19:23:43,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:23:43,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:23:43,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:23:43,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:23:43,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:23:43,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:23:43,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 258 transitions, 2959 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:43,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:23:43,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:23:43,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:23:44,074 INFO L124 PetriNetUnfolderBase]: 738/1451 cut-off events. [2024-06-27 19:23:44,074 INFO L125 PetriNetUnfolderBase]: For 125192/125192 co-relation queries the response was YES. [2024-06-27 19:23:44,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9354 conditions, 1451 events. 738/1451 cut-off events. For 125192/125192 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 8574 event pairs, 208 based on Foata normal form. 2/1449 useless extension candidates. Maximal degree in co-relation 9184. Up to 1053 conditions per place. [2024-06-27 19:23:44,090 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 176 selfloop transitions, 95 changer transitions 0/273 dead transitions. [2024-06-27 19:23:44,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 273 transitions, 3611 flow [2024-06-27 19:23:44,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:23:44,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:23:44,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-27 19:23:44,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-27 19:23:44,091 INFO L175 Difference]: Start difference. First operand has 375 places, 258 transitions, 2959 flow. Second operand 10 states and 108 transitions. [2024-06-27 19:23:44,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 273 transitions, 3611 flow [2024-06-27 19:23:44,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 273 transitions, 3443 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 19:23:44,773 INFO L231 Difference]: Finished difference. Result has 373 places, 259 transitions, 3035 flow [2024-06-27 19:23:44,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2791, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3035, PETRI_PLACES=373, PETRI_TRANSITIONS=259} [2024-06-27 19:23:44,774 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 343 predicate places. [2024-06-27 19:23:44,774 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 259 transitions, 3035 flow [2024-06-27 19:23:44,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:44,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:23:44,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:23:44,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-27 19:23:44,774 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:23:44,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:23:44,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1443715174, now seen corresponding path program 40 times [2024-06-27 19:23:44,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:23:44,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213053302] [2024-06-27 19:23:44,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:23:44,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:23:44,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:23:45,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:23:45,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:23:45,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213053302] [2024-06-27 19:23:45,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213053302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:23:45,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:23:45,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:23:45,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192404749] [2024-06-27 19:23:45,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:23:45,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:23:45,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:23:45,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:23:45,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:23:45,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:23:45,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 259 transitions, 3035 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:45,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:23:45,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:23:45,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:23:46,313 INFO L124 PetriNetUnfolderBase]: 742/1459 cut-off events. [2024-06-27 19:23:46,314 INFO L125 PetriNetUnfolderBase]: For 123895/123895 co-relation queries the response was YES. [2024-06-27 19:23:46,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9479 conditions, 1459 events. 742/1459 cut-off events. For 123895/123895 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 8632 event pairs, 208 based on Foata normal form. 2/1457 useless extension candidates. Maximal degree in co-relation 9310. Up to 1253 conditions per place. [2024-06-27 19:23:46,337 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 216 selfloop transitions, 56 changer transitions 0/274 dead transitions. [2024-06-27 19:23:46,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 274 transitions, 3675 flow [2024-06-27 19:23:46,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:23:46,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:23:46,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-27 19:23:46,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33225806451612905 [2024-06-27 19:23:46,338 INFO L175 Difference]: Start difference. First operand has 373 places, 259 transitions, 3035 flow. Second operand 10 states and 103 transitions. [2024-06-27 19:23:46,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 274 transitions, 3675 flow [2024-06-27 19:23:46,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 274 transitions, 3436 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-27 19:23:46,961 INFO L231 Difference]: Finished difference. Result has 375 places, 260 transitions, 2964 flow [2024-06-27 19:23:46,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2796, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2964, PETRI_PLACES=375, PETRI_TRANSITIONS=260} [2024-06-27 19:23:46,961 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 345 predicate places. [2024-06-27 19:23:46,961 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 260 transitions, 2964 flow [2024-06-27 19:23:46,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:46,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:23:46,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:23:46,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-27 19:23:46,962 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:23:46,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:23:46,962 INFO L85 PathProgramCache]: Analyzing trace with hash 446942234, now seen corresponding path program 41 times [2024-06-27 19:23:46,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:23:46,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095446503] [2024-06-27 19:23:46,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:23:46,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:23:46,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:23:48,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:23:48,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:23:48,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095446503] [2024-06-27 19:23:48,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095446503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:23:48,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:23:48,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:23:48,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864440250] [2024-06-27 19:23:48,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:23:48,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:23:48,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:23:48,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:23:48,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:23:48,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:23:48,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 260 transitions, 2964 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:48,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:23:48,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:23:48,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:23:48,562 INFO L124 PetriNetUnfolderBase]: 746/1467 cut-off events. [2024-06-27 19:23:48,562 INFO L125 PetriNetUnfolderBase]: For 126742/126742 co-relation queries the response was YES. [2024-06-27 19:23:48,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9456 conditions, 1467 events. 746/1467 cut-off events. For 126742/126742 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 8689 event pairs, 330 based on Foata normal form. 2/1468 useless extension candidates. Maximal degree in co-relation 9286. Up to 1388 conditions per place. [2024-06-27 19:23:48,579 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 247 selfloop transitions, 26 changer transitions 0/275 dead transitions. [2024-06-27 19:23:48,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 275 transitions, 3624 flow [2024-06-27 19:23:48,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:23:48,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:23:48,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-27 19:23:48,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33225806451612905 [2024-06-27 19:23:48,579 INFO L175 Difference]: Start difference. First operand has 375 places, 260 transitions, 2964 flow. Second operand 10 states and 103 transitions. [2024-06-27 19:23:48,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 275 transitions, 3624 flow [2024-06-27 19:23:49,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 275 transitions, 3464 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-27 19:23:49,239 INFO L231 Difference]: Finished difference. Result has 377 places, 261 transitions, 2914 flow [2024-06-27 19:23:49,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2804, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2914, PETRI_PLACES=377, PETRI_TRANSITIONS=261} [2024-06-27 19:23:49,239 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 347 predicate places. [2024-06-27 19:23:49,239 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 261 transitions, 2914 flow [2024-06-27 19:23:49,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:49,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:23:49,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:23:49,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-27 19:23:49,240 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:23:49,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:23:49,240 INFO L85 PathProgramCache]: Analyzing trace with hash 439800330, now seen corresponding path program 20 times [2024-06-27 19:23:49,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:23:49,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141026618] [2024-06-27 19:23:49,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:23:49,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:23:49,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:23:50,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:23:50,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:23:50,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141026618] [2024-06-27 19:23:50,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141026618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:23:50,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:23:50,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:23:50,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398761856] [2024-06-27 19:23:50,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:23:50,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:23:50,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:23:50,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:23:50,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:23:50,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:23:50,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 261 transitions, 2914 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:50,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:23:50,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:23:50,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:23:50,560 INFO L124 PetriNetUnfolderBase]: 762/1503 cut-off events. [2024-06-27 19:23:50,560 INFO L125 PetriNetUnfolderBase]: For 157486/157486 co-relation queries the response was YES. [2024-06-27 19:23:50,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9462 conditions, 1503 events. 762/1503 cut-off events. For 157486/157486 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 8958 event pairs, 216 based on Foata normal form. 10/1509 useless extension candidates. Maximal degree in co-relation 9291. Up to 1059 conditions per place. [2024-06-27 19:23:50,577 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 174 selfloop transitions, 89 changer transitions 14/279 dead transitions. [2024-06-27 19:23:50,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 279 transitions, 3570 flow [2024-06-27 19:23:50,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:23:50,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:23:50,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-27 19:23:50,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-27 19:23:50,578 INFO L175 Difference]: Start difference. First operand has 377 places, 261 transitions, 2914 flow. Second operand 10 states and 113 transitions. [2024-06-27 19:23:50,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 279 transitions, 3570 flow [2024-06-27 19:23:51,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 279 transitions, 3470 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-27 19:23:51,204 INFO L231 Difference]: Finished difference. Result has 379 places, 255 transitions, 2954 flow [2024-06-27 19:23:51,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2814, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2954, PETRI_PLACES=379, PETRI_TRANSITIONS=255} [2024-06-27 19:23:51,205 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 349 predicate places. [2024-06-27 19:23:51,205 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 255 transitions, 2954 flow [2024-06-27 19:23:51,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:51,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:23:51,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:23:51,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-27 19:23:51,205 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:23:51,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:23:51,205 INFO L85 PathProgramCache]: Analyzing trace with hash 439585004, now seen corresponding path program 42 times [2024-06-27 19:23:51,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:23:51,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109605705] [2024-06-27 19:23:51,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:23:51,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:23:51,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:23:52,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:23:52,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:23:52,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109605705] [2024-06-27 19:23:52,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109605705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:23:52,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:23:52,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:23:52,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158338030] [2024-06-27 19:23:52,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:23:52,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:23:52,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:23:52,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:23:52,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:23:52,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:23:52,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 255 transitions, 2954 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:52,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:23:52,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:23:52,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:23:53,152 INFO L124 PetriNetUnfolderBase]: 723/1430 cut-off events. [2024-06-27 19:23:53,152 INFO L125 PetriNetUnfolderBase]: For 122286/122286 co-relation queries the response was YES. [2024-06-27 19:23:53,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9030 conditions, 1430 events. 723/1430 cut-off events. For 122286/122286 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 8475 event pairs, 207 based on Foata normal form. 2/1428 useless extension candidates. Maximal degree in co-relation 8858. Up to 1040 conditions per place. [2024-06-27 19:23:53,168 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 176 selfloop transitions, 91 changer transitions 0/269 dead transitions. [2024-06-27 19:23:53,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 269 transitions, 3542 flow [2024-06-27 19:23:53,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:23:53,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:23:53,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-27 19:23:53,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-27 19:23:53,169 INFO L175 Difference]: Start difference. First operand has 379 places, 255 transitions, 2954 flow. Second operand 10 states and 106 transitions. [2024-06-27 19:23:53,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 269 transitions, 3542 flow [2024-06-27 19:23:53,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 269 transitions, 3353 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 19:23:53,862 INFO L231 Difference]: Finished difference. Result has 373 places, 255 transitions, 2951 flow [2024-06-27 19:23:53,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2765, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2951, PETRI_PLACES=373, PETRI_TRANSITIONS=255} [2024-06-27 19:23:53,862 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 343 predicate places. [2024-06-27 19:23:53,862 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 255 transitions, 2951 flow [2024-06-27 19:23:53,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:53,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:23:53,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:23:53,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-27 19:23:53,863 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:23:53,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:23:53,863 INFO L85 PathProgramCache]: Analyzing trace with hash 446950170, now seen corresponding path program 21 times [2024-06-27 19:23:53,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:23:53,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611217817] [2024-06-27 19:23:53,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:23:53,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:23:53,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:23:54,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:23:54,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:23:54,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611217817] [2024-06-27 19:23:54,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611217817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:23:54,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:23:54,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:23:54,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989075732] [2024-06-27 19:23:54,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:23:54,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:23:54,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:23:54,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:23:54,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:23:55,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:23:55,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 255 transitions, 2951 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:55,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:23:55,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:23:55,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:23:55,647 INFO L124 PetriNetUnfolderBase]: 739/1466 cut-off events. [2024-06-27 19:23:55,648 INFO L125 PetriNetUnfolderBase]: For 145972/145972 co-relation queries the response was YES. [2024-06-27 19:23:55,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9114 conditions, 1466 events. 739/1466 cut-off events. For 145972/145972 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 8715 event pairs, 333 based on Foata normal form. 10/1475 useless extension candidates. Maximal degree in co-relation 8944. Up to 1357 conditions per place. [2024-06-27 19:23:55,664 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 241 selfloop transitions, 15 changer transitions 16/274 dead transitions. [2024-06-27 19:23:55,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 274 transitions, 3599 flow [2024-06-27 19:23:55,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:23:55,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:23:55,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-27 19:23:55,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3343108504398827 [2024-06-27 19:23:55,665 INFO L175 Difference]: Start difference. First operand has 373 places, 255 transitions, 2951 flow. Second operand 11 states and 114 transitions. [2024-06-27 19:23:55,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 274 transitions, 3599 flow [2024-06-27 19:23:56,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 274 transitions, 3207 flow, removed 25 selfloop flow, removed 11 redundant places. [2024-06-27 19:23:56,371 INFO L231 Difference]: Finished difference. Result has 373 places, 249 transitions, 2556 flow [2024-06-27 19:23:56,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2559, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2556, PETRI_PLACES=373, PETRI_TRANSITIONS=249} [2024-06-27 19:23:56,372 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 343 predicate places. [2024-06-27 19:23:56,372 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 249 transitions, 2556 flow [2024-06-27 19:23:56,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:56,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:23:56,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:23:56,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-27 19:23:56,373 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:23:56,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:23:56,373 INFO L85 PathProgramCache]: Analyzing trace with hash 447209640, now seen corresponding path program 22 times [2024-06-27 19:23:56,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:23:56,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687442719] [2024-06-27 19:23:56,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:23:56,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:23:56,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:23:57,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:23:57,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:23:57,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687442719] [2024-06-27 19:23:57,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687442719] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:23:57,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:23:57,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:23:57,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777423675] [2024-06-27 19:23:57,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:23:57,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:23:57,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:23:57,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:23:57,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:23:57,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:23:57,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 249 transitions, 2556 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:57,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:23:57,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:23:57,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:23:57,683 INFO L124 PetriNetUnfolderBase]: 721/1436 cut-off events. [2024-06-27 19:23:57,683 INFO L125 PetriNetUnfolderBase]: For 147330/147330 co-relation queries the response was YES. [2024-06-27 19:23:57,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8416 conditions, 1436 events. 721/1436 cut-off events. For 147330/147330 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 8537 event pairs, 335 based on Foata normal form. 10/1445 useless extension candidates. Maximal degree in co-relation 8247. Up to 1351 conditions per place. [2024-06-27 19:23:57,698 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 240 selfloop transitions, 12 changer transitions 11/265 dead transitions. [2024-06-27 19:23:57,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 265 transitions, 3164 flow [2024-06-27 19:23:57,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:23:57,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:23:57,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-27 19:23:57,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3258064516129032 [2024-06-27 19:23:57,699 INFO L175 Difference]: Start difference. First operand has 373 places, 249 transitions, 2556 flow. Second operand 10 states and 101 transitions. [2024-06-27 19:23:57,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 265 transitions, 3164 flow [2024-06-27 19:23:58,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 265 transitions, 3061 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-27 19:23:58,305 INFO L231 Difference]: Finished difference. Result has 365 places, 246 transitions, 2467 flow [2024-06-27 19:23:58,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2457, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2467, PETRI_PLACES=365, PETRI_TRANSITIONS=246} [2024-06-27 19:23:58,305 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 335 predicate places. [2024-06-27 19:23:58,306 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 246 transitions, 2467 flow [2024-06-27 19:23:58,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:58,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:23:58,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:23:58,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-27 19:23:58,306 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:23:58,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:23:58,306 INFO L85 PathProgramCache]: Analyzing trace with hash 447218940, now seen corresponding path program 23 times [2024-06-27 19:23:58,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:23:58,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695074137] [2024-06-27 19:23:58,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:23:58,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:23:58,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:23:59,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:23:59,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:23:59,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695074137] [2024-06-27 19:23:59,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695074137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:23:59,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:23:59,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:23:59,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48164049] [2024-06-27 19:23:59,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:23:59,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:23:59,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:23:59,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:23:59,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:23:59,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:23:59,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 246 transitions, 2467 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:59,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:23:59,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:23:59,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:23:59,563 INFO L124 PetriNetUnfolderBase]: 702/1403 cut-off events. [2024-06-27 19:23:59,564 INFO L125 PetriNetUnfolderBase]: For 126127/126127 co-relation queries the response was YES. [2024-06-27 19:23:59,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7954 conditions, 1403 events. 702/1403 cut-off events. For 126127/126127 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 8330 event pairs, 328 based on Foata normal form. 8/1410 useless extension candidates. Maximal degree in co-relation 7788. Up to 1328 conditions per place. [2024-06-27 19:23:59,579 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 237 selfloop transitions, 10 changer transitions 12/261 dead transitions. [2024-06-27 19:23:59,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 261 transitions, 3049 flow [2024-06-27 19:23:59,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:23:59,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:23:59,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 98 transitions. [2024-06-27 19:23:59,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3161290322580645 [2024-06-27 19:23:59,580 INFO L175 Difference]: Start difference. First operand has 365 places, 246 transitions, 2467 flow. Second operand 10 states and 98 transitions. [2024-06-27 19:23:59,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 261 transitions, 3049 flow [2024-06-27 19:24:00,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 261 transitions, 3021 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-27 19:24:00,147 INFO L231 Difference]: Finished difference. Result has 363 places, 242 transitions, 2443 flow [2024-06-27 19:24:00,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2439, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2443, PETRI_PLACES=363, PETRI_TRANSITIONS=242} [2024-06-27 19:24:00,148 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 333 predicate places. [2024-06-27 19:24:00,148 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 242 transitions, 2443 flow [2024-06-27 19:24:00,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:00,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:24:00,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:24:00,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-27 19:24:00,148 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:24:00,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:24:00,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1445944291, now seen corresponding path program 1 times [2024-06-27 19:24:00,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:24:00,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086553010] [2024-06-27 19:24:00,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:24:00,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:24:00,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:24:01,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:24:01,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:24:01,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086553010] [2024-06-27 19:24:01,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086553010] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:24:01,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:24:01,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:24:01,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108943891] [2024-06-27 19:24:01,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:24:01,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:24:01,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:24:01,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:24:01,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:24:01,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:24:01,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 242 transitions, 2443 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:01,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:24:01,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:24:01,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:24:01,869 INFO L124 PetriNetUnfolderBase]: 690/1379 cut-off events. [2024-06-27 19:24:01,869 INFO L125 PetriNetUnfolderBase]: For 117099/117099 co-relation queries the response was YES. [2024-06-27 19:24:01,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7821 conditions, 1379 events. 690/1379 cut-off events. For 117099/117099 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 8164 event pairs, 194 based on Foata normal form. 6/1383 useless extension candidates. Maximal degree in co-relation 7656. Up to 1177 conditions per place. [2024-06-27 19:24:01,884 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 214 selfloop transitions, 29 changer transitions 20/265 dead transitions. [2024-06-27 19:24:01,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 265 transitions, 3027 flow [2024-06-27 19:24:01,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:24:01,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:24:01,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-27 19:24:01,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33602150537634407 [2024-06-27 19:24:01,885 INFO L175 Difference]: Start difference. First operand has 363 places, 242 transitions, 2443 flow. Second operand 12 states and 125 transitions. [2024-06-27 19:24:01,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 265 transitions, 3027 flow [2024-06-27 19:24:02,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 265 transitions, 3001 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 19:24:02,440 INFO L231 Difference]: Finished difference. Result has 360 places, 235 transitions, 2376 flow [2024-06-27 19:24:02,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2417, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2376, PETRI_PLACES=360, PETRI_TRANSITIONS=235} [2024-06-27 19:24:02,441 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 330 predicate places. [2024-06-27 19:24:02,441 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 235 transitions, 2376 flow [2024-06-27 19:24:02,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:02,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:24:02,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:24:02,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-27 19:24:02,441 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:24:02,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:24:02,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1821086729, now seen corresponding path program 2 times [2024-06-27 19:24:02,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:24:02,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047933423] [2024-06-27 19:24:02,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:24:02,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:24:02,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:24:04,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:24:04,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:24:04,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047933423] [2024-06-27 19:24:04,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047933423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:24:04,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:24:04,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:24:04,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43568059] [2024-06-27 19:24:04,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:24:04,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:24:04,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:24:04,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:24:04,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:24:04,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:24:04,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 235 transitions, 2376 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:04,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:24:04,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:24:04,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:24:04,797 INFO L124 PetriNetUnfolderBase]: 662/1329 cut-off events. [2024-06-27 19:24:04,797 INFO L125 PetriNetUnfolderBase]: For 111657/111657 co-relation queries the response was YES. [2024-06-27 19:24:04,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7561 conditions, 1329 events. 662/1329 cut-off events. For 111657/111657 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 7842 event pairs, 179 based on Foata normal form. 6/1334 useless extension candidates. Maximal degree in co-relation 7398. Up to 1125 conditions per place. [2024-06-27 19:24:04,807 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 210 selfloop transitions, 27 changer transitions 19/258 dead transitions. [2024-06-27 19:24:04,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 258 transitions, 2946 flow [2024-06-27 19:24:04,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:24:04,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:24:04,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-27 19:24:04,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33602150537634407 [2024-06-27 19:24:04,808 INFO L175 Difference]: Start difference. First operand has 360 places, 235 transitions, 2376 flow. Second operand 12 states and 125 transitions. [2024-06-27 19:24:04,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 258 transitions, 2946 flow [2024-06-27 19:24:05,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 258 transitions, 2864 flow, removed 5 selfloop flow, removed 14 redundant places. [2024-06-27 19:24:05,306 INFO L231 Difference]: Finished difference. Result has 349 places, 229 transitions, 2287 flow [2024-06-27 19:24:05,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2294, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2287, PETRI_PLACES=349, PETRI_TRANSITIONS=229} [2024-06-27 19:24:05,306 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 319 predicate places. [2024-06-27 19:24:05,307 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 229 transitions, 2287 flow [2024-06-27 19:24:05,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:05,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:24:05,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:24:05,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-27 19:24:05,307 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:24:05,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:24:05,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1438213893, now seen corresponding path program 3 times [2024-06-27 19:24:05,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:24:05,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787777407] [2024-06-27 19:24:05,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:24:05,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:24:05,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:24:06,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:24:06,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:24:06,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787777407] [2024-06-27 19:24:06,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787777407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:24:06,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:24:06,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:24:06,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864898081] [2024-06-27 19:24:06,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:24:06,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:24:06,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:24:06,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:24:06,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:24:06,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:24:06,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 229 transitions, 2287 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:06,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:24:06,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:24:06,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:24:07,114 INFO L124 PetriNetUnfolderBase]: 638/1283 cut-off events. [2024-06-27 19:24:07,114 INFO L125 PetriNetUnfolderBase]: For 111281/111281 co-relation queries the response was YES. [2024-06-27 19:24:07,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7332 conditions, 1283 events. 638/1283 cut-off events. For 111281/111281 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 7482 event pairs, 181 based on Foata normal form. 6/1287 useless extension candidates. Maximal degree in co-relation 7174. Up to 1119 conditions per place. [2024-06-27 19:24:07,126 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 200 selfloop transitions, 31 changer transitions 17/250 dead transitions. [2024-06-27 19:24:07,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 250 transitions, 2835 flow [2024-06-27 19:24:07,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:24:07,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:24:07,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-27 19:24:07,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33602150537634407 [2024-06-27 19:24:07,127 INFO L175 Difference]: Start difference. First operand has 349 places, 229 transitions, 2287 flow. Second operand 12 states and 125 transitions. [2024-06-27 19:24:07,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 250 transitions, 2835 flow [2024-06-27 19:24:07,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 250 transitions, 2754 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-27 19:24:07,611 INFO L231 Difference]: Finished difference. Result has 339 places, 224 transitions, 2206 flow [2024-06-27 19:24:07,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2206, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2206, PETRI_PLACES=339, PETRI_TRANSITIONS=224} [2024-06-27 19:24:07,611 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 309 predicate places. [2024-06-27 19:24:07,611 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 224 transitions, 2206 flow [2024-06-27 19:24:07,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:07,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:24:07,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:24:07,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-27 19:24:07,612 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:24:07,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:24:07,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1162194317, now seen corresponding path program 4 times [2024-06-27 19:24:07,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:24:07,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785037996] [2024-06-27 19:24:07,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:24:07,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:24:07,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:24:09,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:24:09,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:24:09,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785037996] [2024-06-27 19:24:09,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785037996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:24:09,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:24:09,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:24:09,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326653323] [2024-06-27 19:24:09,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:24:09,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:24:09,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:24:09,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:24:09,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:24:09,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:24:09,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 224 transitions, 2206 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:09,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:24:09,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:24:09,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:24:09,785 INFO L124 PetriNetUnfolderBase]: 620/1249 cut-off events. [2024-06-27 19:24:09,785 INFO L125 PetriNetUnfolderBase]: For 110762/110762 co-relation queries the response was YES. [2024-06-27 19:24:09,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7144 conditions, 1249 events. 620/1249 cut-off events. For 110762/110762 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 7222 event pairs, 173 based on Foata normal form. 6/1254 useless extension candidates. Maximal degree in co-relation 6990. Up to 1075 conditions per place. [2024-06-27 19:24:09,798 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 192 selfloop transitions, 42 changer transitions 8/244 dead transitions. [2024-06-27 19:24:09,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 244 transitions, 2756 flow [2024-06-27 19:24:09,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:24:09,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:24:09,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-27 19:24:09,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467741935483871 [2024-06-27 19:24:09,798 INFO L175 Difference]: Start difference. First operand has 339 places, 224 transitions, 2206 flow. Second operand 12 states and 129 transitions. [2024-06-27 19:24:09,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 244 transitions, 2756 flow [2024-06-27 19:24:10,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 244 transitions, 2682 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-27 19:24:10,286 INFO L231 Difference]: Finished difference. Result has 331 places, 222 transitions, 2201 flow [2024-06-27 19:24:10,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2132, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2201, PETRI_PLACES=331, PETRI_TRANSITIONS=222} [2024-06-27 19:24:10,287 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 301 predicate places. [2024-06-27 19:24:10,287 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 222 transitions, 2201 flow [2024-06-27 19:24:10,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:10,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:24:10,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:24:10,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-27 19:24:10,287 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:24:10,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:24:10,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1549036413, now seen corresponding path program 5 times [2024-06-27 19:24:10,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:24:10,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326027256] [2024-06-27 19:24:10,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:24:10,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:24:10,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:24:11,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:24:11,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:24:11,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326027256] [2024-06-27 19:24:11,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326027256] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:24:11,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:24:11,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:24:11,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21404499] [2024-06-27 19:24:11,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:24:11,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:24:11,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:24:11,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:24:11,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:24:11,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:24:11,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 222 transitions, 2201 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:11,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:24:11,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:24:11,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:24:12,285 INFO L124 PetriNetUnfolderBase]: 618/1247 cut-off events. [2024-06-27 19:24:12,285 INFO L125 PetriNetUnfolderBase]: For 110877/110877 co-relation queries the response was YES. [2024-06-27 19:24:12,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7126 conditions, 1247 events. 618/1247 cut-off events. For 110877/110877 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 7222 event pairs, 177 based on Foata normal form. 6/1251 useless extension candidates. Maximal degree in co-relation 6977. Up to 1077 conditions per place. [2024-06-27 19:24:12,298 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 193 selfloop transitions, 34 changer transitions 15/244 dead transitions. [2024-06-27 19:24:12,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 244 transitions, 2750 flow [2024-06-27 19:24:12,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:24:12,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:24:12,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-27 19:24:12,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-27 19:24:12,298 INFO L175 Difference]: Start difference. First operand has 331 places, 222 transitions, 2201 flow. Second operand 12 states and 126 transitions. [2024-06-27 19:24:12,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 244 transitions, 2750 flow [2024-06-27 19:24:12,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 244 transitions, 2662 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 19:24:12,784 INFO L231 Difference]: Finished difference. Result has 330 places, 218 transitions, 2130 flow [2024-06-27 19:24:12,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2113, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2130, PETRI_PLACES=330, PETRI_TRANSITIONS=218} [2024-06-27 19:24:12,785 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 300 predicate places. [2024-06-27 19:24:12,785 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 218 transitions, 2130 flow [2024-06-27 19:24:12,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:12,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:24:12,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:24:12,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-27 19:24:12,786 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:24:12,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:24:12,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1157552687, now seen corresponding path program 6 times [2024-06-27 19:24:12,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:24:12,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548110921] [2024-06-27 19:24:12,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:24:12,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:24:12,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:24:14,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:24:14,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:24:14,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548110921] [2024-06-27 19:24:14,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548110921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:24:14,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:24:14,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:24:14,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307371797] [2024-06-27 19:24:14,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:24:14,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:24:14,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:24:14,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:24:14,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:24:14,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:24:14,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 218 transitions, 2130 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:14,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:24:14,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:24:14,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:24:14,717 INFO L124 PetriNetUnfolderBase]: 602/1219 cut-off events. [2024-06-27 19:24:14,717 INFO L125 PetriNetUnfolderBase]: For 109719/109719 co-relation queries the response was YES. [2024-06-27 19:24:14,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6982 conditions, 1219 events. 602/1219 cut-off events. For 109719/109719 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 7033 event pairs, 165 based on Foata normal form. 6/1224 useless extension candidates. Maximal degree in co-relation 6832. Up to 1048 conditions per place. [2024-06-27 19:24:14,729 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 189 selfloop transitions, 34 changer transitions 14/239 dead transitions. [2024-06-27 19:24:14,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 239 transitions, 2664 flow [2024-06-27 19:24:14,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:24:14,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:24:14,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-27 19:24:14,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34139784946236557 [2024-06-27 19:24:14,730 INFO L175 Difference]: Start difference. First operand has 330 places, 218 transitions, 2130 flow. Second operand 12 states and 127 transitions. [2024-06-27 19:24:14,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 239 transitions, 2664 flow [2024-06-27 19:24:15,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 239 transitions, 2588 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 19:24:15,230 INFO L231 Difference]: Finished difference. Result has 325 places, 214 transitions, 2090 flow [2024-06-27 19:24:15,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2054, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2090, PETRI_PLACES=325, PETRI_TRANSITIONS=214} [2024-06-27 19:24:15,231 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 295 predicate places. [2024-06-27 19:24:15,231 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 214 transitions, 2090 flow [2024-06-27 19:24:15,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:15,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:24:15,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:24:15,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-27 19:24:15,232 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:24:15,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:24:15,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1553684801, now seen corresponding path program 1 times [2024-06-27 19:24:15,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:24:15,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671589986] [2024-06-27 19:24:15,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:24:15,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:24:15,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:24:16,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:24:16,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:24:16,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671589986] [2024-06-27 19:24:16,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671589986] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:24:16,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:24:16,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:24:16,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679603781] [2024-06-27 19:24:16,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:24:16,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:24:16,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:24:16,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:24:16,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:24:16,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:24:16,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 214 transitions, 2090 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:16,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:24:16,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:24:16,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:24:17,288 INFO L124 PetriNetUnfolderBase]: 599/1214 cut-off events. [2024-06-27 19:24:17,288 INFO L125 PetriNetUnfolderBase]: For 115847/115847 co-relation queries the response was YES. [2024-06-27 19:24:17,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6977 conditions, 1214 events. 599/1214 cut-off events. For 115847/115847 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 7007 event pairs, 175 based on Foata normal form. 8/1220 useless extension candidates. Maximal degree in co-relation 6831. Up to 1040 conditions per place. [2024-06-27 19:24:17,300 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 189 selfloop transitions, 37 changer transitions 10/238 dead transitions. [2024-06-27 19:24:17,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 238 transitions, 2682 flow [2024-06-27 19:24:17,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:24:17,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:24:17,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-27 19:24:17,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 19:24:17,300 INFO L175 Difference]: Start difference. First operand has 325 places, 214 transitions, 2090 flow. Second operand 11 states and 121 transitions. [2024-06-27 19:24:17,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 238 transitions, 2682 flow [2024-06-27 19:24:17,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 238 transitions, 2606 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 19:24:17,780 INFO L231 Difference]: Finished difference. Result has 320 places, 215 transitions, 2113 flow [2024-06-27 19:24:17,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2014, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2113, PETRI_PLACES=320, PETRI_TRANSITIONS=215} [2024-06-27 19:24:17,780 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 290 predicate places. [2024-06-27 19:24:17,781 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 215 transitions, 2113 flow [2024-06-27 19:24:17,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:17,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:24:17,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:24:17,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-27 19:24:17,781 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:24:17,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:24:17,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1162201075, now seen corresponding path program 2 times [2024-06-27 19:24:17,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:24:17,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856514903] [2024-06-27 19:24:17,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:24:17,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:24:17,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:24:19,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:24:19,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:24:19,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856514903] [2024-06-27 19:24:19,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856514903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:24:19,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:24:19,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:24:19,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972117351] [2024-06-27 19:24:19,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:24:19,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:24:19,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:24:19,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:24:19,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:24:19,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:24:19,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 215 transitions, 2113 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:19,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:24:19,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:24:19,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:24:19,978 INFO L124 PetriNetUnfolderBase]: 593/1204 cut-off events. [2024-06-27 19:24:19,978 INFO L125 PetriNetUnfolderBase]: For 116551/116551 co-relation queries the response was YES. [2024-06-27 19:24:19,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6942 conditions, 1204 events. 593/1204 cut-off events. For 116551/116551 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 6899 event pairs, 171 based on Foata normal form. 8/1211 useless extension candidates. Maximal degree in co-relation 6796. Up to 1024 conditions per place. [2024-06-27 19:24:19,989 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 184 selfloop transitions, 38 changer transitions 11/235 dead transitions. [2024-06-27 19:24:19,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 235 transitions, 2661 flow [2024-06-27 19:24:19,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:24:19,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:24:19,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-27 19:24:19,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-27 19:24:19,990 INFO L175 Difference]: Start difference. First operand has 320 places, 215 transitions, 2113 flow. Second operand 12 states and 128 transitions. [2024-06-27 19:24:19,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 235 transitions, 2661 flow [2024-06-27 19:24:20,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 235 transitions, 2586 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 19:24:20,486 INFO L231 Difference]: Finished difference. Result has 321 places, 211 transitions, 2084 flow [2024-06-27 19:24:20,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2038, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2084, PETRI_PLACES=321, PETRI_TRANSITIONS=211} [2024-06-27 19:24:20,487 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 291 predicate places. [2024-06-27 19:24:20,487 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 211 transitions, 2084 flow [2024-06-27 19:24:20,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:20,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:24:20,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:24:20,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-27 19:24:20,488 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:24:20,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:24:20,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1857111271, now seen corresponding path program 7 times [2024-06-27 19:24:20,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:24:20,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986909018] [2024-06-27 19:24:20,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:24:20,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:24:20,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:24:22,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:24:22,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:24:22,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986909018] [2024-06-27 19:24:22,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986909018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:24:22,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:24:22,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:24:22,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486641437] [2024-06-27 19:24:22,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:24:22,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:24:22,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:24:22,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:24:22,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:24:22,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:24:22,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 211 transitions, 2084 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:22,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:24:22,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:24:22,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:24:23,375 INFO L124 PetriNetUnfolderBase]: 583/1186 cut-off events. [2024-06-27 19:24:23,375 INFO L125 PetriNetUnfolderBase]: For 110573/110573 co-relation queries the response was YES. [2024-06-27 19:24:23,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6847 conditions, 1186 events. 583/1186 cut-off events. For 110573/110573 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 6809 event pairs, 165 based on Foata normal form. 6/1191 useless extension candidates. Maximal degree in co-relation 6702. Up to 1002 conditions per place. [2024-06-27 19:24:23,386 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 177 selfloop transitions, 27 changer transitions 24/230 dead transitions. [2024-06-27 19:24:23,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 230 transitions, 2604 flow [2024-06-27 19:24:23,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:24:23,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:24:23,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-27 19:24:23,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-27 19:24:23,387 INFO L175 Difference]: Start difference. First operand has 321 places, 211 transitions, 2084 flow. Second operand 11 states and 120 transitions. [2024-06-27 19:24:23,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 230 transitions, 2604 flow [2024-06-27 19:24:23,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 230 transitions, 2511 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-27 19:24:23,852 INFO L231 Difference]: Finished difference. Result has 316 places, 195 transitions, 1859 flow [2024-06-27 19:24:23,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1991, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1859, PETRI_PLACES=316, PETRI_TRANSITIONS=195} [2024-06-27 19:24:23,853 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 286 predicate places. [2024-06-27 19:24:23,853 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 195 transitions, 1859 flow [2024-06-27 19:24:23,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:23,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:24:23,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:24:23,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-27 19:24:23,853 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:24:23,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:24:23,853 INFO L85 PathProgramCache]: Analyzing trace with hash 590659413, now seen corresponding path program 8 times [2024-06-27 19:24:23,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:24:23,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267060244] [2024-06-27 19:24:23,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:24:23,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:24:23,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:24:25,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:24:25,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:24:25,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267060244] [2024-06-27 19:24:25,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267060244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:24:25,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:24:25,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:24:25,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018886732] [2024-06-27 19:24:25,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:24:25,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:24:25,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:24:25,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:24:25,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:24:25,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:24:25,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 195 transitions, 1859 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:25,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:24:25,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:24:25,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:24:25,721 INFO L124 PetriNetUnfolderBase]: 541/1101 cut-off events. [2024-06-27 19:24:25,721 INFO L125 PetriNetUnfolderBase]: For 109768/109768 co-relation queries the response was YES. [2024-06-27 19:24:25,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6359 conditions, 1101 events. 541/1101 cut-off events. For 109768/109768 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 6208 event pairs, 159 based on Foata normal form. 6/1106 useless extension candidates. Maximal degree in co-relation 6216. Up to 964 conditions per place. [2024-06-27 19:24:25,731 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 174 selfloop transitions, 21 changer transitions 19/216 dead transitions. [2024-06-27 19:24:25,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 216 transitions, 2339 flow [2024-06-27 19:24:25,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:24:25,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:24:25,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-06-27 19:24:25,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33064516129032256 [2024-06-27 19:24:25,732 INFO L175 Difference]: Start difference. First operand has 316 places, 195 transitions, 1859 flow. Second operand 12 states and 123 transitions. [2024-06-27 19:24:25,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 216 transitions, 2339 flow [2024-06-27 19:24:26,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 216 transitions, 2245 flow, removed 3 selfloop flow, removed 21 redundant places. [2024-06-27 19:24:26,177 INFO L231 Difference]: Finished difference. Result has 303 places, 188 transitions, 1739 flow [2024-06-27 19:24:26,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1765, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1739, PETRI_PLACES=303, PETRI_TRANSITIONS=188} [2024-06-27 19:24:26,177 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 273 predicate places. [2024-06-27 19:24:26,178 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 188 transitions, 1739 flow [2024-06-27 19:24:26,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:26,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:24:26,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:24:26,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-27 19:24:26,178 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:24:26,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:24:26,178 INFO L85 PathProgramCache]: Analyzing trace with hash -907597937, now seen corresponding path program 9 times [2024-06-27 19:24:26,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:24:26,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178976960] [2024-06-27 19:24:26,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:24:26,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:24:26,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:24:27,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:24:27,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:24:27,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178976960] [2024-06-27 19:24:27,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178976960] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:24:27,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:24:27,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:24:27,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776721528] [2024-06-27 19:24:27,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:24:27,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:24:27,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:24:27,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:24:27,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:24:27,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:24:27,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 188 transitions, 1739 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:27,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:24:27,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:24:27,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:24:27,915 INFO L124 PetriNetUnfolderBase]: 522/1060 cut-off events. [2024-06-27 19:24:27,915 INFO L125 PetriNetUnfolderBase]: For 106851/106851 co-relation queries the response was YES. [2024-06-27 19:24:27,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6125 conditions, 1060 events. 522/1060 cut-off events. For 106851/106851 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 5877 event pairs, 102 based on Foata normal form. 6/1065 useless extension candidates. Maximal degree in co-relation 5988. Up to 877 conditions per place. [2024-06-27 19:24:27,924 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 163 selfloop transitions, 21 changer transitions 25/211 dead transitions. [2024-06-27 19:24:27,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 211 transitions, 2213 flow [2024-06-27 19:24:27,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:24:27,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:24:27,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 119 transitions. [2024-06-27 19:24:27,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31989247311827956 [2024-06-27 19:24:27,925 INFO L175 Difference]: Start difference. First operand has 303 places, 188 transitions, 1739 flow. Second operand 12 states and 119 transitions. [2024-06-27 19:24:27,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 211 transitions, 2213 flow [2024-06-27 19:24:28,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 211 transitions, 2132 flow, removed 5 selfloop flow, removed 15 redundant places. [2024-06-27 19:24:28,309 INFO L231 Difference]: Finished difference. Result has 291 places, 179 transitions, 1624 flow [2024-06-27 19:24:28,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1658, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1624, PETRI_PLACES=291, PETRI_TRANSITIONS=179} [2024-06-27 19:24:28,309 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 261 predicate places. [2024-06-27 19:24:28,309 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 179 transitions, 1624 flow [2024-06-27 19:24:28,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:28,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:24:28,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:24:28,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-27 19:24:28,310 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:24:28,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:24:28,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1076815893, now seen corresponding path program 10 times [2024-06-27 19:24:28,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:24:28,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032112669] [2024-06-27 19:24:28,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:24:28,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:24:28,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:24:30,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:24:30,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:24:30,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032112669] [2024-06-27 19:24:30,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032112669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:24:30,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:24:30,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:24:30,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393196898] [2024-06-27 19:24:30,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:24:30,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:24:30,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:24:30,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:24:30,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:24:30,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:24:30,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 179 transitions, 1624 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:30,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:24:30,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:24:30,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:24:30,815 INFO L124 PetriNetUnfolderBase]: 503/1013 cut-off events. [2024-06-27 19:24:30,815 INFO L125 PetriNetUnfolderBase]: For 106751/106751 co-relation queries the response was YES. [2024-06-27 19:24:30,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5906 conditions, 1013 events. 503/1013 cut-off events. For 106751/106751 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5588 event pairs, 135 based on Foata normal form. 6/1018 useless extension candidates. Maximal degree in co-relation 5774. Up to 897 conditions per place. [2024-06-27 19:24:30,824 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 162 selfloop transitions, 23 changer transitions 12/199 dead transitions. [2024-06-27 19:24:30,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 199 transitions, 2093 flow [2024-06-27 19:24:30,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:24:30,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:24:30,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-27 19:24:30,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3313782991202346 [2024-06-27 19:24:30,825 INFO L175 Difference]: Start difference. First operand has 291 places, 179 transitions, 1624 flow. Second operand 11 states and 113 transitions. [2024-06-27 19:24:30,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 199 transitions, 2093 flow [2024-06-27 19:24:31,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 199 transitions, 1977 flow, removed 5 selfloop flow, removed 19 redundant places. [2024-06-27 19:24:31,178 INFO L231 Difference]: Finished difference. Result has 273 places, 177 transitions, 1532 flow [2024-06-27 19:24:31,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1508, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1532, PETRI_PLACES=273, PETRI_TRANSITIONS=177} [2024-06-27 19:24:31,178 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 243 predicate places. [2024-06-27 19:24:31,178 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 177 transitions, 1532 flow [2024-06-27 19:24:31,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:31,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:24:31,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:24:31,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-27 19:24:31,179 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:24:31,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:24:31,179 INFO L85 PathProgramCache]: Analyzing trace with hash -421034435, now seen corresponding path program 11 times [2024-06-27 19:24:31,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:24:31,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836426710] [2024-06-27 19:24:31,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:24:31,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:24:31,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:24:32,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:24:32,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:24:32,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836426710] [2024-06-27 19:24:32,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836426710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:24:32,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:24:32,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:24:32,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609553732] [2024-06-27 19:24:32,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:24:32,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:24:32,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:24:32,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:24:32,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:24:32,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:24:32,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 177 transitions, 1532 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:32,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:24:32,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:24:32,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:24:33,452 INFO L124 PetriNetUnfolderBase]: 489/987 cut-off events. [2024-06-27 19:24:33,452 INFO L125 PetriNetUnfolderBase]: For 105999/105999 co-relation queries the response was YES. [2024-06-27 19:24:33,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5708 conditions, 987 events. 489/987 cut-off events. For 105999/105999 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 5400 event pairs, 125 based on Foata normal form. 6/992 useless extension candidates. Maximal degree in co-relation 5583. Up to 869 conditions per place. [2024-06-27 19:24:33,459 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 160 selfloop transitions, 18 changer transitions 17/197 dead transitions. [2024-06-27 19:24:33,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 197 transitions, 1972 flow [2024-06-27 19:24:33,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:24:33,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:24:33,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 120 transitions. [2024-06-27 19:24:33,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-27 19:24:33,459 INFO L175 Difference]: Start difference. First operand has 273 places, 177 transitions, 1532 flow. Second operand 12 states and 120 transitions. [2024-06-27 19:24:33,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 197 transitions, 1972 flow [2024-06-27 19:24:33,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 197 transitions, 1918 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 19:24:33,746 INFO L231 Difference]: Finished difference. Result has 272 places, 172 transitions, 1470 flow [2024-06-27 19:24:33,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1478, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1470, PETRI_PLACES=272, PETRI_TRANSITIONS=172} [2024-06-27 19:24:33,746 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 242 predicate places. [2024-06-27 19:24:33,747 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 172 transitions, 1470 flow [2024-06-27 19:24:33,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:33,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:24:33,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:24:33,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-27 19:24:33,747 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:24:33,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:24:33,747 INFO L85 PathProgramCache]: Analyzing trace with hash -73709485, now seen corresponding path program 12 times [2024-06-27 19:24:33,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:24:33,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811126384] [2024-06-27 19:24:33,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:24:33,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:24:33,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:24:35,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:24:35,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:24:35,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811126384] [2024-06-27 19:24:35,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811126384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:24:35,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:24:35,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:24:35,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405477050] [2024-06-27 19:24:35,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:24:35,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:24:35,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:24:35,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:24:35,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:24:35,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:24:35,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 172 transitions, 1470 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:35,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:24:35,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:24:35,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:24:36,465 INFO L124 PetriNetUnfolderBase]: 471/953 cut-off events. [2024-06-27 19:24:36,465 INFO L125 PetriNetUnfolderBase]: For 106019/106019 co-relation queries the response was YES. [2024-06-27 19:24:36,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5560 conditions, 953 events. 471/953 cut-off events. For 106019/106019 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5191 event pairs, 126 based on Foata normal form. 6/958 useless extension candidates. Maximal degree in co-relation 5436. Up to 828 conditions per place. [2024-06-27 19:24:36,473 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 153 selfloop transitions, 24 changer transitions 14/193 dead transitions. [2024-06-27 19:24:36,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 193 transitions, 1928 flow [2024-06-27 19:24:36,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:24:36,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:24:36,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-06-27 19:24:36,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33064516129032256 [2024-06-27 19:24:36,474 INFO L175 Difference]: Start difference. First operand has 272 places, 172 transitions, 1470 flow. Second operand 12 states and 123 transitions. [2024-06-27 19:24:36,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 193 transitions, 1928 flow [2024-06-27 19:24:36,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 193 transitions, 1882 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-27 19:24:36,785 INFO L231 Difference]: Finished difference. Result has 264 places, 168 transitions, 1439 flow [2024-06-27 19:24:36,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1424, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1439, PETRI_PLACES=264, PETRI_TRANSITIONS=168} [2024-06-27 19:24:36,786 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 234 predicate places. [2024-06-27 19:24:36,786 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 168 transitions, 1439 flow [2024-06-27 19:24:36,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:36,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:24:36,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:24:36,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-27 19:24:36,786 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:24:36,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:24:36,787 INFO L85 PathProgramCache]: Analyzing trace with hash -305743265, now seen corresponding path program 13 times [2024-06-27 19:24:36,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:24:36,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012003563] [2024-06-27 19:24:36,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:24:36,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:24:36,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:24:38,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:24:38,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:24:38,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012003563] [2024-06-27 19:24:38,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012003563] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:24:38,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:24:38,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:24:38,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018359972] [2024-06-27 19:24:38,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:24:38,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:24:38,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:24:38,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:24:38,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:24:38,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:24:38,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 168 transitions, 1439 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:38,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:24:38,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:24:38,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:24:38,997 INFO L124 PetriNetUnfolderBase]: 457/927 cut-off events. [2024-06-27 19:24:38,997 INFO L125 PetriNetUnfolderBase]: For 106002/106002 co-relation queries the response was YES. [2024-06-27 19:24:39,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5447 conditions, 927 events. 457/927 cut-off events. For 106002/106002 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4999 event pairs, 119 based on Foata normal form. 6/932 useless extension candidates. Maximal degree in co-relation 5327. Up to 804 conditions per place. [2024-06-27 19:24:39,003 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 152 selfloop transitions, 24 changer transitions 9/187 dead transitions. [2024-06-27 19:24:39,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 187 transitions, 1865 flow [2024-06-27 19:24:39,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:24:39,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:24:39,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 122 transitions. [2024-06-27 19:24:39,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3279569892473118 [2024-06-27 19:24:39,004 INFO L175 Difference]: Start difference. First operand has 264 places, 168 transitions, 1439 flow. Second operand 12 states and 122 transitions. [2024-06-27 19:24:39,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 187 transitions, 1865 flow [2024-06-27 19:24:39,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 187 transitions, 1809 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 19:24:39,298 INFO L231 Difference]: Finished difference. Result has 259 places, 165 transitions, 1409 flow [2024-06-27 19:24:39,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1383, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1409, PETRI_PLACES=259, PETRI_TRANSITIONS=165} [2024-06-27 19:24:39,298 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 229 predicate places. [2024-06-27 19:24:39,298 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 165 transitions, 1409 flow [2024-06-27 19:24:39,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:39,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:24:39,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:24:39,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-27 19:24:39,299 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:24:39,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:24:39,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1643444929, now seen corresponding path program 14 times [2024-06-27 19:24:39,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:24:39,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937114719] [2024-06-27 19:24:39,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:24:39,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:24:39,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:24:41,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:24:41,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:24:41,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937114719] [2024-06-27 19:24:41,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937114719] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:24:41,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:24:41,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:24:41,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122002587] [2024-06-27 19:24:41,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:24:41,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:24:41,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:24:41,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:24:41,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:24:41,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:24:41,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 165 transitions, 1409 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:41,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:24:41,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:24:41,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:24:42,160 INFO L124 PetriNetUnfolderBase]: 447/909 cut-off events. [2024-06-27 19:24:42,160 INFO L125 PetriNetUnfolderBase]: For 106099/106099 co-relation queries the response was YES. [2024-06-27 19:24:42,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5366 conditions, 909 events. 447/909 cut-off events. For 106099/106099 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4893 event pairs, 122 based on Foata normal form. 6/914 useless extension candidates. Maximal degree in co-relation 5248. Up to 783 conditions per place. [2024-06-27 19:24:42,167 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 145 selfloop transitions, 22 changer transitions 16/185 dead transitions. [2024-06-27 19:24:42,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 185 transitions, 1841 flow [2024-06-27 19:24:42,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:24:42,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:24:42,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 121 transitions. [2024-06-27 19:24:42,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32526881720430106 [2024-06-27 19:24:42,168 INFO L175 Difference]: Start difference. First operand has 259 places, 165 transitions, 1409 flow. Second operand 12 states and 121 transitions. [2024-06-27 19:24:42,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 185 transitions, 1841 flow [2024-06-27 19:24:42,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 185 transitions, 1787 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-27 19:24:42,438 INFO L231 Difference]: Finished difference. Result has 255 places, 160 transitions, 1367 flow [2024-06-27 19:24:42,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1355, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1367, PETRI_PLACES=255, PETRI_TRANSITIONS=160} [2024-06-27 19:24:42,438 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 225 predicate places. [2024-06-27 19:24:42,438 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 160 transitions, 1367 flow [2024-06-27 19:24:42,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:42,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:24:42,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:24:42,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-27 19:24:42,438 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:24:42,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:24:42,439 INFO L85 PathProgramCache]: Analyzing trace with hash -305570285, now seen corresponding path program 15 times [2024-06-27 19:24:42,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:24:42,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091405105] [2024-06-27 19:24:42,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:24:42,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:24:42,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:24:43,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:24:43,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:24:43,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091405105] [2024-06-27 19:24:43,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091405105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:24:43,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:24:43,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:24:43,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704464623] [2024-06-27 19:24:43,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:24:43,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:24:43,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:24:43,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:24:43,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:24:43,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:24:43,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 160 transitions, 1367 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:43,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:24:43,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:24:43,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:24:44,407 INFO L124 PetriNetUnfolderBase]: 438/890 cut-off events. [2024-06-27 19:24:44,407 INFO L125 PetriNetUnfolderBase]: For 112720/112720 co-relation queries the response was YES. [2024-06-27 19:24:44,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5307 conditions, 890 events. 438/890 cut-off events. For 112720/112720 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4738 event pairs, 121 based on Foata normal form. 8/897 useless extension candidates. Maximal degree in co-relation 5191. Up to 766 conditions per place. [2024-06-27 19:24:44,413 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 141 selfloop transitions, 20 changer transitions 14/177 dead transitions. [2024-06-27 19:24:44,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 177 transitions, 1785 flow [2024-06-27 19:24:44,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:24:44,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:24:44,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-27 19:24:44,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3343108504398827 [2024-06-27 19:24:44,414 INFO L175 Difference]: Start difference. First operand has 255 places, 160 transitions, 1367 flow. Second operand 11 states and 114 transitions. [2024-06-27 19:24:44,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 177 transitions, 1785 flow [2024-06-27 19:24:44,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 177 transitions, 1720 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 19:24:44,672 INFO L231 Difference]: Finished difference. Result has 247 places, 153 transitions, 1289 flow [2024-06-27 19:24:44,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1302, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1289, PETRI_PLACES=247, PETRI_TRANSITIONS=153} [2024-06-27 19:24:44,673 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 217 predicate places. [2024-06-27 19:24:44,673 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 153 transitions, 1289 flow [2024-06-27 19:24:44,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:44,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:24:44,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:24:44,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-27 19:24:44,673 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:24:44,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:24:44,673 INFO L85 PathProgramCache]: Analyzing trace with hash -244411915, now seen corresponding path program 16 times [2024-06-27 19:24:44,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:24:44,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142977702] [2024-06-27 19:24:44,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:24:44,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:24:44,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:24:46,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:24:46,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:24:46,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142977702] [2024-06-27 19:24:46,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142977702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:24:46,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:24:46,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:24:46,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390958161] [2024-06-27 19:24:46,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:24:46,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:24:46,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:24:46,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:24:46,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:24:46,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:24:46,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 153 transitions, 1289 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:46,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:24:46,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:24:46,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:24:47,022 INFO L124 PetriNetUnfolderBase]: 406/826 cut-off events. [2024-06-27 19:24:47,022 INFO L125 PetriNetUnfolderBase]: For 84324/84324 co-relation queries the response was YES. [2024-06-27 19:24:47,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4549 conditions, 826 events. 406/826 cut-off events. For 84324/84324 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4327 event pairs, 105 based on Foata normal form. 6/831 useless extension candidates. Maximal degree in co-relation 4434. Up to 701 conditions per place. [2024-06-27 19:24:47,027 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 134 selfloop transitions, 20 changer transitions 16/172 dead transitions. [2024-06-27 19:24:47,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 172 transitions, 1693 flow [2024-06-27 19:24:47,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:24:47,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:24:47,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-27 19:24:47,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3343108504398827 [2024-06-27 19:24:47,028 INFO L175 Difference]: Start difference. First operand has 247 places, 153 transitions, 1289 flow. Second operand 11 states and 114 transitions. [2024-06-27 19:24:47,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 172 transitions, 1693 flow [2024-06-27 19:24:47,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 172 transitions, 1637 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-27 19:24:47,241 INFO L231 Difference]: Finished difference. Result has 239 places, 147 transitions, 1222 flow [2024-06-27 19:24:47,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1233, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1222, PETRI_PLACES=239, PETRI_TRANSITIONS=147} [2024-06-27 19:24:47,241 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 209 predicate places. [2024-06-27 19:24:47,241 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 147 transitions, 1222 flow [2024-06-27 19:24:47,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:47,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:24:47,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:24:47,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-27 19:24:47,242 INFO L420 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:24:47,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:24:47,242 INFO L85 PathProgramCache]: Analyzing trace with hash -310211915, now seen corresponding path program 17 times [2024-06-27 19:24:47,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:24:47,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721385796] [2024-06-27 19:24:47,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:24:47,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:24:47,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:24:48,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:24:48,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:24:48,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721385796] [2024-06-27 19:24:48,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721385796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:24:48,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:24:48,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:24:48,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481947665] [2024-06-27 19:24:48,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:24:48,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:24:48,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:24:48,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:24:48,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:24:48,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:24:48,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 147 transitions, 1222 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:48,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:24:48,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:24:48,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:24:49,318 INFO L124 PetriNetUnfolderBase]: 389/791 cut-off events. [2024-06-27 19:24:49,319 INFO L125 PetriNetUnfolderBase]: For 84107/84107 co-relation queries the response was YES. [2024-06-27 19:24:49,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4396 conditions, 791 events. 389/791 cut-off events. For 84107/84107 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4071 event pairs, 96 based on Foata normal form. 6/796 useless extension candidates. Maximal degree in co-relation 4285. Up to 670 conditions per place. [2024-06-27 19:24:49,324 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 125 selfloop transitions, 12 changer transitions 28/167 dead transitions. [2024-06-27 19:24:49,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 167 transitions, 1610 flow [2024-06-27 19:24:49,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:24:49,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:24:49,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 118 transitions. [2024-06-27 19:24:49,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3172043010752688 [2024-06-27 19:24:49,324 INFO L175 Difference]: Start difference. First operand has 239 places, 147 transitions, 1222 flow. Second operand 12 states and 118 transitions. [2024-06-27 19:24:49,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 167 transitions, 1610 flow [2024-06-27 19:24:49,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 167 transitions, 1562 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 19:24:49,516 INFO L231 Difference]: Finished difference. Result has 232 places, 135 transitions, 1092 flow [2024-06-27 19:24:49,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1174, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1092, PETRI_PLACES=232, PETRI_TRANSITIONS=135} [2024-06-27 19:24:49,516 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 202 predicate places. [2024-06-27 19:24:49,516 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 135 transitions, 1092 flow [2024-06-27 19:24:49,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:49,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:24:49,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:24:49,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-27 19:24:49,517 INFO L420 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:24:49,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:24:49,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1476410359, now seen corresponding path program 18 times [2024-06-27 19:24:49,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:24:49,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130322781] [2024-06-27 19:24:49,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:24:49,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:24:49,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:24:50,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:24:50,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:24:50,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130322781] [2024-06-27 19:24:50,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130322781] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:24:50,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:24:50,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:24:50,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575347688] [2024-06-27 19:24:50,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:24:50,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:24:50,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:24:50,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:24:50,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:24:51,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:24:51,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 135 transitions, 1092 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:51,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:24:51,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:24:51,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:24:51,543 INFO L124 PetriNetUnfolderBase]: 366/738 cut-off events. [2024-06-27 19:24:51,543 INFO L125 PetriNetUnfolderBase]: For 83929/83929 co-relation queries the response was YES. [2024-06-27 19:24:51,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4158 conditions, 738 events. 366/738 cut-off events. For 83929/83929 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3724 event pairs, 66 based on Foata normal form. 6/743 useless extension candidates. Maximal degree in co-relation 4050. Up to 612 conditions per place. [2024-06-27 19:24:51,548 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 119 selfloop transitions, 14 changer transitions 18/153 dead transitions. [2024-06-27 19:24:51,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 153 transitions, 1438 flow [2024-06-27 19:24:51,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:24:51,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:24:51,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-27 19:24:51,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31085043988269795 [2024-06-27 19:24:51,549 INFO L175 Difference]: Start difference. First operand has 232 places, 135 transitions, 1092 flow. Second operand 11 states and 106 transitions. [2024-06-27 19:24:51,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 153 transitions, 1438 flow [2024-06-27 19:24:51,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 153 transitions, 1341 flow, removed 3 selfloop flow, removed 15 redundant places. [2024-06-27 19:24:51,704 INFO L231 Difference]: Finished difference. Result has 212 places, 130 transitions, 1003 flow [2024-06-27 19:24:51,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=995, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1003, PETRI_PLACES=212, PETRI_TRANSITIONS=130} [2024-06-27 19:24:51,704 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 182 predicate places. [2024-06-27 19:24:51,704 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 130 transitions, 1003 flow [2024-06-27 19:24:51,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:51,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:24:51,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:24:51,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-27 19:24:51,705 INFO L420 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:24:51,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:24:51,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1579502481, now seen corresponding path program 19 times [2024-06-27 19:24:51,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:24:51,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855036379] [2024-06-27 19:24:51,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:24:51,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:24:51,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:24:53,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:24:53,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:24:53,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855036379] [2024-06-27 19:24:53,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855036379] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:24:53,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:24:53,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:24:53,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611081345] [2024-06-27 19:24:53,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:24:53,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:24:53,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:24:53,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:24:53,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:24:53,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:24:53,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 130 transitions, 1003 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:53,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:24:53,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:24:53,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:24:53,721 INFO L124 PetriNetUnfolderBase]: 346/702 cut-off events. [2024-06-27 19:24:53,721 INFO L125 PetriNetUnfolderBase]: For 81651/81651 co-relation queries the response was YES. [2024-06-27 19:24:53,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3998 conditions, 702 events. 346/702 cut-off events. For 81651/81651 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3499 event pairs, 81 based on Foata normal form. 6/707 useless extension candidates. Maximal degree in co-relation 3896. Up to 594 conditions per place. [2024-06-27 19:24:53,725 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 109 selfloop transitions, 20 changer transitions 14/145 dead transitions. [2024-06-27 19:24:53,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 145 transitions, 1331 flow [2024-06-27 19:24:53,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:24:53,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:24:53,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-27 19:24:53,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33225806451612905 [2024-06-27 19:24:53,726 INFO L175 Difference]: Start difference. First operand has 212 places, 130 transitions, 1003 flow. Second operand 10 states and 103 transitions. [2024-06-27 19:24:53,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 145 transitions, 1331 flow [2024-06-27 19:24:53,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 145 transitions, 1293 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-27 19:24:53,887 INFO L231 Difference]: Finished difference. Result has 203 places, 125 transitions, 976 flow [2024-06-27 19:24:53,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=965, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=976, PETRI_PLACES=203, PETRI_TRANSITIONS=125} [2024-06-27 19:24:53,887 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 173 predicate places. [2024-06-27 19:24:53,888 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 125 transitions, 976 flow [2024-06-27 19:24:53,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:53,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:24:53,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:24:53,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-27 19:24:53,888 INFO L420 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:24:53,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:24:53,888 INFO L85 PathProgramCache]: Analyzing trace with hash -486945447, now seen corresponding path program 20 times [2024-06-27 19:24:53,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:24:53,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286294593] [2024-06-27 19:24:53,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:24:53,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:24:53,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:24:55,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:24:55,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:24:55,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286294593] [2024-06-27 19:24:55,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286294593] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:24:55,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:24:55,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:24:55,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140333888] [2024-06-27 19:24:55,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:24:55,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:24:55,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:24:55,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:24:55,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:24:55,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:24:55,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 125 transitions, 976 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:55,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:24:55,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:24:55,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:24:55,558 INFO L124 PetriNetUnfolderBase]: 334/682 cut-off events. [2024-06-27 19:24:55,559 INFO L125 PetriNetUnfolderBase]: For 79372/79372 co-relation queries the response was YES. [2024-06-27 19:24:55,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3884 conditions, 682 events. 334/682 cut-off events. For 79372/79372 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3385 event pairs, 87 based on Foata normal form. 8/689 useless extension candidates. Maximal degree in co-relation 3786. Up to 551 conditions per place. [2024-06-27 19:24:55,563 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 101 selfloop transitions, 25 changer transitions 14/142 dead transitions. [2024-06-27 19:24:55,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 142 transitions, 1330 flow [2024-06-27 19:24:55,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:24:55,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:24:55,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-27 19:24:55,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33724340175953077 [2024-06-27 19:24:55,564 INFO L175 Difference]: Start difference. First operand has 203 places, 125 transitions, 976 flow. Second operand 11 states and 115 transitions. [2024-06-27 19:24:55,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 142 transitions, 1330 flow [2024-06-27 19:24:55,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 142 transitions, 1282 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 19:24:55,700 INFO L231 Difference]: Finished difference. Result has 198 places, 119 transitions, 941 flow [2024-06-27 19:24:55,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=928, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=941, PETRI_PLACES=198, PETRI_TRANSITIONS=119} [2024-06-27 19:24:55,701 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 168 predicate places. [2024-06-27 19:24:55,701 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 119 transitions, 941 flow [2024-06-27 19:24:55,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:55,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:24:55,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:24:55,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-27 19:24:55,701 INFO L420 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:24:55,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:24:55,701 INFO L85 PathProgramCache]: Analyzing trace with hash -399188203, now seen corresponding path program 21 times [2024-06-27 19:24:55,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:24:55,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041019214] [2024-06-27 19:24:55,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:24:55,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:24:55,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:24:57,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:24:57,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:24:57,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041019214] [2024-06-27 19:24:57,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041019214] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:24:57,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:24:57,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:24:57,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457434386] [2024-06-27 19:24:57,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:24:57,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:24:57,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:24:57,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:24:57,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:24:57,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:24:57,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 119 transitions, 941 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:57,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:24:57,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:24:57,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:24:57,981 INFO L124 PetriNetUnfolderBase]: 318/654 cut-off events. [2024-06-27 19:24:57,981 INFO L125 PetriNetUnfolderBase]: For 67805/67805 co-relation queries the response was YES. [2024-06-27 19:24:57,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3711 conditions, 654 events. 318/654 cut-off events. For 67805/67805 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3217 event pairs, 81 based on Foata normal form. 6/659 useless extension candidates. Maximal degree in co-relation 3616. Up to 531 conditions per place. [2024-06-27 19:24:57,985 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 97 selfloop transitions, 19 changer transitions 19/137 dead transitions. [2024-06-27 19:24:57,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 137 transitions, 1271 flow [2024-06-27 19:24:57,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:24:57,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:24:57,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-27 19:24:57,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255131964809384 [2024-06-27 19:24:57,986 INFO L175 Difference]: Start difference. First operand has 198 places, 119 transitions, 941 flow. Second operand 11 states and 111 transitions. [2024-06-27 19:24:57,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 137 transitions, 1271 flow [2024-06-27 19:24:58,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 137 transitions, 1196 flow, removed 4 selfloop flow, removed 14 redundant places. [2024-06-27 19:24:58,105 INFO L231 Difference]: Finished difference. Result has 191 places, 112 transitions, 856 flow [2024-06-27 19:24:58,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=866, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=856, PETRI_PLACES=191, PETRI_TRANSITIONS=112} [2024-06-27 19:24:58,106 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 161 predicate places. [2024-06-27 19:24:58,106 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 112 transitions, 856 flow [2024-06-27 19:24:58,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:58,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:24:58,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:24:58,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-27 19:24:58,106 INFO L420 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:24:58,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:24:58,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1468679961, now seen corresponding path program 22 times [2024-06-27 19:24:58,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:24:58,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543041686] [2024-06-27 19:24:58,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:24:58,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:24:58,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:24:59,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:24:59,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:24:59,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543041686] [2024-06-27 19:24:59,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543041686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:24:59,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:24:59,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:24:59,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669908371] [2024-06-27 19:24:59,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:24:59,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:24:59,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:24:59,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:24:59,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:24:59,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:24:59,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 112 transitions, 856 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:59,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:24:59,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:24:59,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:25:00,129 INFO L124 PetriNetUnfolderBase]: 302/626 cut-off events. [2024-06-27 19:25:00,129 INFO L125 PetriNetUnfolderBase]: For 62274/62274 co-relation queries the response was YES. [2024-06-27 19:25:00,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3500 conditions, 626 events. 302/626 cut-off events. For 62274/62274 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3045 event pairs, 75 based on Foata normal form. 6/631 useless extension candidates. Maximal degree in co-relation 3409. Up to 524 conditions per place. [2024-06-27 19:25:00,133 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 93 selfloop transitions, 12 changer transitions 22/129 dead transitions. [2024-06-27 19:25:00,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 129 transitions, 1152 flow [2024-06-27 19:25:00,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:25:00,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:25:00,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 108 transitions. [2024-06-27 19:25:00,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31671554252199413 [2024-06-27 19:25:00,134 INFO L175 Difference]: Start difference. First operand has 191 places, 112 transitions, 856 flow. Second operand 11 states and 108 transitions. [2024-06-27 19:25:00,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 129 transitions, 1152 flow [2024-06-27 19:25:00,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 129 transitions, 1092 flow, removed 5 selfloop flow, removed 14 redundant places. [2024-06-27 19:25:00,236 INFO L231 Difference]: Finished difference. Result has 183 places, 103 transitions, 766 flow [2024-06-27 19:25:00,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=796, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=766, PETRI_PLACES=183, PETRI_TRANSITIONS=103} [2024-06-27 19:25:00,236 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 153 predicate places. [2024-06-27 19:25:00,237 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 103 transitions, 766 flow [2024-06-27 19:25:00,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:00,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:25:00,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:25:00,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-27 19:25:00,237 INFO L420 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:25:00,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:25:00,237 INFO L85 PathProgramCache]: Analyzing trace with hash 111421209, now seen corresponding path program 23 times [2024-06-27 19:25:00,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:25:00,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566939479] [2024-06-27 19:25:00,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:25:00,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:25:00,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:25:02,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:25:02,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:25:02,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566939479] [2024-06-27 19:25:02,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566939479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:25:02,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:25:02,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:25:02,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119759519] [2024-06-27 19:25:02,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:25:02,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:25:02,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:25:02,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:25:02,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:25:02,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:25:02,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 103 transitions, 766 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:02,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:25:02,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:25:02,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:25:02,795 INFO L124 PetriNetUnfolderBase]: 266/546 cut-off events. [2024-06-27 19:25:02,795 INFO L125 PetriNetUnfolderBase]: For 55222/55222 co-relation queries the response was YES. [2024-06-27 19:25:02,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3101 conditions, 546 events. 266/546 cut-off events. For 55222/55222 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2530 event pairs, 69 based on Foata normal form. 6/551 useless extension candidates. Maximal degree in co-relation 3014. Up to 462 conditions per place. [2024-06-27 19:25:02,798 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 89 selfloop transitions, 11 changer transitions 17/119 dead transitions. [2024-06-27 19:25:02,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 119 transitions, 1038 flow [2024-06-27 19:25:02,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:25:02,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:25:02,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 103 transitions. [2024-06-27 19:25:02,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3020527859237537 [2024-06-27 19:25:02,799 INFO L175 Difference]: Start difference. First operand has 183 places, 103 transitions, 766 flow. Second operand 11 states and 103 transitions. [2024-06-27 19:25:02,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 119 transitions, 1038 flow [2024-06-27 19:25:02,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 119 transitions, 963 flow, removed 5 selfloop flow, removed 15 redundant places. [2024-06-27 19:25:02,894 INFO L231 Difference]: Finished difference. Result has 170 places, 98 transitions, 690 flow [2024-06-27 19:25:02,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=691, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=690, PETRI_PLACES=170, PETRI_TRANSITIONS=98} [2024-06-27 19:25:02,894 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 140 predicate places. [2024-06-27 19:25:02,894 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 98 transitions, 690 flow [2024-06-27 19:25:02,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:02,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:25:02,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:25:02,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-27 19:25:02,894 INFO L420 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:25:02,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:25:02,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1103356617, now seen corresponding path program 24 times [2024-06-27 19:25:02,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:25:02,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13831257] [2024-06-27 19:25:02,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:25:02,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:25:02,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:25:04,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:25:04,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:25:04,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13831257] [2024-06-27 19:25:04,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13831257] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:25:04,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:25:04,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:25:04,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097111812] [2024-06-27 19:25:04,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:25:04,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:25:04,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:25:04,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:25:04,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:25:04,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:25:04,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 98 transitions, 690 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:04,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:25:04,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:25:04,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:25:04,548 INFO L124 PetriNetUnfolderBase]: 233/479 cut-off events. [2024-06-27 19:25:04,548 INFO L125 PetriNetUnfolderBase]: For 37479/37479 co-relation queries the response was YES. [2024-06-27 19:25:04,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2448 conditions, 479 events. 233/479 cut-off events. For 37479/37479 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2130 event pairs, 57 based on Foata normal form. 6/484 useless extension candidates. Maximal degree in co-relation 2366. Up to 355 conditions per place. [2024-06-27 19:25:04,551 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 74 selfloop transitions, 21 changer transitions 15/112 dead transitions. [2024-06-27 19:25:04,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 112 transitions, 952 flow [2024-06-27 19:25:04,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:25:04,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:25:04,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-27 19:25:04,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31085043988269795 [2024-06-27 19:25:04,552 INFO L175 Difference]: Start difference. First operand has 170 places, 98 transitions, 690 flow. Second operand 11 states and 106 transitions. [2024-06-27 19:25:04,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 112 transitions, 952 flow [2024-06-27 19:25:04,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 112 transitions, 920 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-27 19:25:04,614 INFO L231 Difference]: Finished difference. Result has 162 places, 92 transitions, 667 flow [2024-06-27 19:25:04,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=667, PETRI_PLACES=162, PETRI_TRANSITIONS=92} [2024-06-27 19:25:04,614 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 132 predicate places. [2024-06-27 19:25:04,614 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 92 transitions, 667 flow [2024-06-27 19:25:04,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:04,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:25:04,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:25:04,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-27 19:25:04,615 INFO L420 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:25:04,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:25:04,615 INFO L85 PathProgramCache]: Analyzing trace with hash -452823153, now seen corresponding path program 25 times [2024-06-27 19:25:04,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:25:04,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048762642] [2024-06-27 19:25:04,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:25:04,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:25:04,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:25:05,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:25:05,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:25:05,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048762642] [2024-06-27 19:25:05,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048762642] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:25:05,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:25:05,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:25:05,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875505429] [2024-06-27 19:25:05,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:25:05,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:25:05,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:25:05,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:25:05,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:25:06,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:25:06,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 92 transitions, 667 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:06,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:25:06,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:25:06,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:25:06,415 INFO L124 PetriNetUnfolderBase]: 221/455 cut-off events. [2024-06-27 19:25:06,415 INFO L125 PetriNetUnfolderBase]: For 32789/32789 co-relation queries the response was YES. [2024-06-27 19:25:06,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2320 conditions, 455 events. 221/455 cut-off events. For 32789/32789 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1984 event pairs, 55 based on Foata normal form. 6/460 useless extension candidates. Maximal degree in co-relation 2242. Up to 359 conditions per place. [2024-06-27 19:25:06,417 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 71 selfloop transitions, 18 changer transitions 15/106 dead transitions. [2024-06-27 19:25:06,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 106 transitions, 909 flow [2024-06-27 19:25:06,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:25:06,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:25:06,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-27 19:25:06,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31085043988269795 [2024-06-27 19:25:06,418 INFO L175 Difference]: Start difference. First operand has 162 places, 92 transitions, 667 flow. Second operand 11 states and 106 transitions. [2024-06-27 19:25:06,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 106 transitions, 909 flow [2024-06-27 19:25:06,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 106 transitions, 855 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-27 19:25:06,469 INFO L231 Difference]: Finished difference. Result has 153 places, 86 transitions, 616 flow [2024-06-27 19:25:06,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=613, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=616, PETRI_PLACES=153, PETRI_TRANSITIONS=86} [2024-06-27 19:25:06,470 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 123 predicate places. [2024-06-27 19:25:06,470 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 86 transitions, 616 flow [2024-06-27 19:25:06,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:06,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:25:06,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:25:06,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-27 19:25:06,470 INFO L420 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:25:06,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:25:06,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1294164431, now seen corresponding path program 26 times [2024-06-27 19:25:06,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:25:06,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782925968] [2024-06-27 19:25:06,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:25:06,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:25:06,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:25:08,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:25:08,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:25:08,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782925968] [2024-06-27 19:25:08,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782925968] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:25:08,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:25:08,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:25:08,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074913689] [2024-06-27 19:25:08,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:25:08,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:25:08,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:25:08,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:25:08,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:25:08,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:25:08,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 86 transitions, 616 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:08,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:25:08,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:25:08,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:25:08,558 INFO L124 PetriNetUnfolderBase]: 219/453 cut-off events. [2024-06-27 19:25:08,558 INFO L125 PetriNetUnfolderBase]: For 28343/28343 co-relation queries the response was YES. [2024-06-27 19:25:08,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2226 conditions, 453 events. 219/453 cut-off events. For 28343/28343 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1978 event pairs, 55 based on Foata normal form. 6/458 useless extension candidates. Maximal degree in co-relation 2152. Up to 371 conditions per place. [2024-06-27 19:25:08,560 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 74 selfloop transitions, 14 changer transitions 14/104 dead transitions. [2024-06-27 19:25:08,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 104 transitions, 867 flow [2024-06-27 19:25:08,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:25:08,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:25:08,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 103 transitions. [2024-06-27 19:25:08,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3020527859237537 [2024-06-27 19:25:08,561 INFO L175 Difference]: Start difference. First operand has 153 places, 86 transitions, 616 flow. Second operand 11 states and 103 transitions. [2024-06-27 19:25:08,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 104 transitions, 867 flow [2024-06-27 19:25:08,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 104 transitions, 815 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-27 19:25:08,611 INFO L231 Difference]: Finished difference. Result has 149 places, 85 transitions, 590 flow [2024-06-27 19:25:08,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=590, PETRI_PLACES=149, PETRI_TRANSITIONS=85} [2024-06-27 19:25:08,612 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 119 predicate places. [2024-06-27 19:25:08,612 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 85 transitions, 590 flow [2024-06-27 19:25:08,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:08,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:25:08,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:25:08,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-27 19:25:08,612 INFO L420 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:25:08,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:25:08,612 INFO L85 PathProgramCache]: Analyzing trace with hash -698087689, now seen corresponding path program 27 times [2024-06-27 19:25:08,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:25:08,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373058267] [2024-06-27 19:25:08,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:25:08,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:25:08,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:25:10,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:25:10,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:25:10,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373058267] [2024-06-27 19:25:10,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373058267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:25:10,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:25:10,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:25:10,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594592587] [2024-06-27 19:25:10,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:25:10,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:25:10,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:25:10,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:25:10,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:25:10,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:25:10,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 85 transitions, 590 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:10,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:25:10,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:25:10,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:25:11,142 INFO L124 PetriNetUnfolderBase]: 220/460 cut-off events. [2024-06-27 19:25:11,142 INFO L125 PetriNetUnfolderBase]: For 32675/32675 co-relation queries the response was YES. [2024-06-27 19:25:11,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2480 conditions, 460 events. 220/460 cut-off events. For 32675/32675 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2024 event pairs, 65 based on Foata normal form. 6/465 useless extension candidates. Maximal degree in co-relation 2406. Up to 304 conditions per place. [2024-06-27 19:25:11,144 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 70 selfloop transitions, 15 changer transitions 15/102 dead transitions. [2024-06-27 19:25:11,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 102 transitions, 934 flow [2024-06-27 19:25:11,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:25:11,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:25:11,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-27 19:25:11,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255131964809384 [2024-06-27 19:25:11,145 INFO L175 Difference]: Start difference. First operand has 149 places, 85 transitions, 590 flow. Second operand 11 states and 111 transitions. [2024-06-27 19:25:11,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 102 transitions, 934 flow [2024-06-27 19:25:11,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 102 transitions, 896 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-27 19:25:11,193 INFO L231 Difference]: Finished difference. Result has 146 places, 76 transitions, 516 flow [2024-06-27 19:25:11,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=516, PETRI_PLACES=146, PETRI_TRANSITIONS=76} [2024-06-27 19:25:11,193 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 116 predicate places. [2024-06-27 19:25:11,193 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 76 transitions, 516 flow [2024-06-27 19:25:11,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:11,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:25:11,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:25:11,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-27 19:25:11,194 INFO L420 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:25:11,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:25:11,194 INFO L85 PathProgramCache]: Analyzing trace with hash 226885359, now seen corresponding path program 28 times [2024-06-27 19:25:11,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:25:11,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588620432] [2024-06-27 19:25:11,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:25:11,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:25:11,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:25:12,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:25:12,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:25:12,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588620432] [2024-06-27 19:25:12,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588620432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:25:12,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:25:12,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:25:12,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938634025] [2024-06-27 19:25:12,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:25:12,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:25:12,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:25:12,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:25:12,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:25:13,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:25:13,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 76 transitions, 516 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:13,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:25:13,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:25:13,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:25:13,435 INFO L124 PetriNetUnfolderBase]: 202/426 cut-off events. [2024-06-27 19:25:13,435 INFO L125 PetriNetUnfolderBase]: For 32691/32691 co-relation queries the response was YES. [2024-06-27 19:25:13,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2337 conditions, 426 events. 202/426 cut-off events. For 32691/32691 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1839 event pairs, 63 based on Foata normal form. 6/431 useless extension candidates. Maximal degree in co-relation 2277. Up to 354 conditions per place. [2024-06-27 19:25:13,437 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 63 selfloop transitions, 16 changer transitions 8/89 dead transitions. [2024-06-27 19:25:13,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 89 transitions, 722 flow [2024-06-27 19:25:13,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:25:13,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:25:13,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 103 transitions. [2024-06-27 19:25:13,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3020527859237537 [2024-06-27 19:25:13,438 INFO L175 Difference]: Start difference. First operand has 146 places, 76 transitions, 516 flow. Second operand 11 states and 103 transitions. [2024-06-27 19:25:13,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 89 transitions, 722 flow [2024-06-27 19:25:13,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 89 transitions, 670 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-27 19:25:13,504 INFO L231 Difference]: Finished difference. Result has 137 places, 74 transitions, 487 flow [2024-06-27 19:25:13,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=487, PETRI_PLACES=137, PETRI_TRANSITIONS=74} [2024-06-27 19:25:13,504 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 107 predicate places. [2024-06-27 19:25:13,504 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 74 transitions, 487 flow [2024-06-27 19:25:13,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:13,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:25:13,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:25:13,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-27 19:25:13,504 INFO L420 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:25:13,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:25:13,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1058521711, now seen corresponding path program 29 times [2024-06-27 19:25:13,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:25:13,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993467366] [2024-06-27 19:25:13,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:25:13,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:25:13,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:25:15,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:25:15,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:25:15,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993467366] [2024-06-27 19:25:15,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993467366] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:25:15,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:25:15,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:25:15,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827147504] [2024-06-27 19:25:15,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:25:15,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:25:15,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:25:15,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:25:15,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:25:15,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:25:15,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 74 transitions, 487 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:15,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:25:15,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:25:15,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:25:15,465 INFO L124 PetriNetUnfolderBase]: 196/416 cut-off events. [2024-06-27 19:25:15,465 INFO L125 PetriNetUnfolderBase]: For 29962/29962 co-relation queries the response was YES. [2024-06-27 19:25:15,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2239 conditions, 416 events. 196/416 cut-off events. For 29962/29962 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1796 event pairs, 60 based on Foata normal form. 6/421 useless extension candidates. Maximal degree in co-relation 2183. Up to 326 conditions per place. [2024-06-27 19:25:15,467 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 58 selfloop transitions, 11 changer transitions 18/89 dead transitions. [2024-06-27 19:25:15,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 89 transitions, 697 flow [2024-06-27 19:25:15,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:25:15,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:25:15,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 103 transitions. [2024-06-27 19:25:15,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3020527859237537 [2024-06-27 19:25:15,468 INFO L175 Difference]: Start difference. First operand has 137 places, 74 transitions, 487 flow. Second operand 11 states and 103 transitions. [2024-06-27 19:25:15,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 89 transitions, 697 flow [2024-06-27 19:25:15,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 89 transitions, 657 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 19:25:15,514 INFO L231 Difference]: Finished difference. Result has 134 places, 67 transitions, 439 flow [2024-06-27 19:25:15,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=439, PETRI_PLACES=134, PETRI_TRANSITIONS=67} [2024-06-27 19:25:15,514 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 104 predicate places. [2024-06-27 19:25:15,514 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 67 transitions, 439 flow [2024-06-27 19:25:15,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:15,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:25:15,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:25:15,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-27 19:25:15,514 INFO L420 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:25:15,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:25:15,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1260588895, now seen corresponding path program 3 times [2024-06-27 19:25:15,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:25:15,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608447982] [2024-06-27 19:25:15,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:25:15,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:25:15,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:25:17,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:25:17,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:25:17,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608447982] [2024-06-27 19:25:17,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608447982] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:25:17,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:25:17,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:25:17,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967835006] [2024-06-27 19:25:17,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:25:17,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:25:17,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:25:17,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:25:17,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:25:17,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:25:17,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 67 transitions, 439 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:17,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:25:17,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:25:17,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:25:17,551 INFO L124 PetriNetUnfolderBase]: 160/344 cut-off events. [2024-06-27 19:25:17,552 INFO L125 PetriNetUnfolderBase]: For 21359/21359 co-relation queries the response was YES. [2024-06-27 19:25:17,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1619 conditions, 344 events. 160/344 cut-off events. For 21359/21359 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1380 event pairs, 51 based on Foata normal form. 8/351 useless extension candidates. Maximal degree in co-relation 1565. Up to 270 conditions per place. [2024-06-27 19:25:17,553 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 53 selfloop transitions, 11 changer transitions 13/79 dead transitions. [2024-06-27 19:25:17,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 79 transitions, 623 flow [2024-06-27 19:25:17,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:25:17,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:25:17,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 101 transitions. [2024-06-27 19:25:17,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2961876832844575 [2024-06-27 19:25:17,554 INFO L175 Difference]: Start difference. First operand has 134 places, 67 transitions, 439 flow. Second operand 11 states and 101 transitions. [2024-06-27 19:25:17,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 79 transitions, 623 flow [2024-06-27 19:25:17,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 79 transitions, 573 flow, removed 10 selfloop flow, removed 12 redundant places. [2024-06-27 19:25:17,573 INFO L231 Difference]: Finished difference. Result has 124 places, 61 transitions, 384 flow [2024-06-27 19:25:17,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=384, PETRI_PLACES=124, PETRI_TRANSITIONS=61} [2024-06-27 19:25:17,573 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 94 predicate places. [2024-06-27 19:25:17,573 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 61 transitions, 384 flow [2024-06-27 19:25:17,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:17,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:25:17,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:25:17,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-27 19:25:17,574 INFO L420 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:25:17,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:25:17,574 INFO L85 PathProgramCache]: Analyzing trace with hash 101867621, now seen corresponding path program 30 times [2024-06-27 19:25:17,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:25:17,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749686604] [2024-06-27 19:25:17,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:25:17,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:25:17,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:25:18,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:25:18,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:25:18,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749686604] [2024-06-27 19:25:18,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749686604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:25:18,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:25:18,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:25:18,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467447292] [2024-06-27 19:25:18,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:25:18,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:25:18,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:25:18,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:25:18,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:25:18,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:25:18,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 61 transitions, 384 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:18,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:25:18,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:25:18,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:25:19,195 INFO L124 PetriNetUnfolderBase]: 149/323 cut-off events. [2024-06-27 19:25:19,195 INFO L125 PetriNetUnfolderBase]: For 15920/15920 co-relation queries the response was YES. [2024-06-27 19:25:19,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1466 conditions, 323 events. 149/323 cut-off events. For 15920/15920 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1268 event pairs, 46 based on Foata normal form. 6/328 useless extension candidates. Maximal degree in co-relation 1417. Up to 235 conditions per place. [2024-06-27 19:25:19,196 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 45 selfloop transitions, 7 changer transitions 21/75 dead transitions. [2024-06-27 19:25:19,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 75 transitions, 564 flow [2024-06-27 19:25:19,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:25:19,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:25:19,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 101 transitions. [2024-06-27 19:25:19,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2961876832844575 [2024-06-27 19:25:19,197 INFO L175 Difference]: Start difference. First operand has 124 places, 61 transitions, 384 flow. Second operand 11 states and 101 transitions. [2024-06-27 19:25:19,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 75 transitions, 564 flow [2024-06-27 19:25:19,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 75 transitions, 522 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-27 19:25:19,212 INFO L231 Difference]: Finished difference. Result has 116 places, 51 transitions, 312 flow [2024-06-27 19:25:19,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=312, PETRI_PLACES=116, PETRI_TRANSITIONS=51} [2024-06-27 19:25:19,212 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 86 predicate places. [2024-06-27 19:25:19,212 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 51 transitions, 312 flow [2024-06-27 19:25:19,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:19,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:25:19,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:25:19,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-27 19:25:19,213 INFO L420 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:25:19,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:25:19,213 INFO L85 PathProgramCache]: Analyzing trace with hash 792122219, now seen corresponding path program 31 times [2024-06-27 19:25:19,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:25:19,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557089610] [2024-06-27 19:25:19,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:25:19,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:25:19,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:25:21,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:25:21,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:25:21,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557089610] [2024-06-27 19:25:21,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557089610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:25:21,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:25:21,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:25:21,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196498605] [2024-06-27 19:25:21,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:25:21,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:25:21,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:25:21,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:25:21,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:25:21,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:25:21,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 51 transitions, 312 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:21,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:25:21,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:25:21,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:25:21,477 INFO L124 PetriNetUnfolderBase]: 131/285 cut-off events. [2024-06-27 19:25:21,477 INFO L125 PetriNetUnfolderBase]: For 13709/13709 co-relation queries the response was YES. [2024-06-27 19:25:21,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1276 conditions, 285 events. 131/285 cut-off events. For 13709/13709 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1055 event pairs, 41 based on Foata normal form. 6/290 useless extension candidates. Maximal degree in co-relation 1231. Up to 206 conditions per place. [2024-06-27 19:25:21,478 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 36 selfloop transitions, 3 changer transitions 25/66 dead transitions. [2024-06-27 19:25:21,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 66 transitions, 474 flow [2024-06-27 19:25:21,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:25:21,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:25:21,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 100 transitions. [2024-06-27 19:25:21,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2932551319648094 [2024-06-27 19:25:21,480 INFO L175 Difference]: Start difference. First operand has 116 places, 51 transitions, 312 flow. Second operand 11 states and 100 transitions. [2024-06-27 19:25:21,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 66 transitions, 474 flow [2024-06-27 19:25:21,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 66 transitions, 442 flow, removed 9 selfloop flow, removed 13 redundant places. [2024-06-27 19:25:21,489 INFO L231 Difference]: Finished difference. Result has 100 places, 40 transitions, 230 flow [2024-06-27 19:25:21,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=230, PETRI_PLACES=100, PETRI_TRANSITIONS=40} [2024-06-27 19:25:21,490 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 70 predicate places. [2024-06-27 19:25:21,490 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 40 transitions, 230 flow [2024-06-27 19:25:21,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:21,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:25:21,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:25:21,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-27 19:25:21,490 INFO L420 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:25:21,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:25:21,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1634620419, now seen corresponding path program 32 times [2024-06-27 19:25:21,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:25:21,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422337157] [2024-06-27 19:25:21,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:25:21,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:25:21,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:25:23,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:25:23,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:25:23,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422337157] [2024-06-27 19:25:23,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422337157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:25:23,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:25:23,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:25:23,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681644059] [2024-06-27 19:25:23,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:25:23,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:25:23,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:25:23,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:25:23,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:25:23,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:25:23,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 40 transitions, 230 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:23,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:25:23,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:25:23,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:25:23,459 INFO L124 PetriNetUnfolderBase]: 93/204 cut-off events. [2024-06-27 19:25:23,459 INFO L125 PetriNetUnfolderBase]: For 6132/6132 co-relation queries the response was YES. [2024-06-27 19:25:23,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 762 conditions, 204 events. 93/204 cut-off events. For 6132/6132 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 665 event pairs, 24 based on Foata normal form. 6/209 useless extension candidates. Maximal degree in co-relation 725. Up to 135 conditions per place. [2024-06-27 19:25:23,460 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 32 selfloop transitions, 10 changer transitions 11/55 dead transitions. [2024-06-27 19:25:23,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 55 transitions, 374 flow [2024-06-27 19:25:23,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:25:23,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:25:23,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 101 transitions. [2024-06-27 19:25:23,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2961876832844575 [2024-06-27 19:25:23,460 INFO L175 Difference]: Start difference. First operand has 100 places, 40 transitions, 230 flow. Second operand 11 states and 101 transitions. [2024-06-27 19:25:23,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 55 transitions, 374 flow [2024-06-27 19:25:23,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 55 transitions, 334 flow, removed 13 selfloop flow, removed 16 redundant places. [2024-06-27 19:25:23,464 INFO L231 Difference]: Finished difference. Result has 79 places, 37 transitions, 204 flow [2024-06-27 19:25:23,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=204, PETRI_PLACES=79, PETRI_TRANSITIONS=37} [2024-06-27 19:25:23,464 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 49 predicate places. [2024-06-27 19:25:23,464 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 37 transitions, 204 flow [2024-06-27 19:25:23,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:23,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:25:23,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:25:23,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-27 19:25:23,465 INFO L420 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:25:23,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:25:23,465 INFO L85 PathProgramCache]: Analyzing trace with hash -414949501, now seen corresponding path program 33 times [2024-06-27 19:25:23,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:25:23,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827256109] [2024-06-27 19:25:23,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:25:23,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:25:23,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:25:25,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:25:25,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:25:25,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827256109] [2024-06-27 19:25:25,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827256109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:25:25,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:25:25,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:25:25,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053756659] [2024-06-27 19:25:25,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:25:25,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:25:25,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:25:25,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:25:25,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:25:25,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:25:25,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 37 transitions, 204 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:25,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:25:25,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:25:25,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:25:25,441 INFO L124 PetriNetUnfolderBase]: 83/186 cut-off events. [2024-06-27 19:25:25,441 INFO L125 PetriNetUnfolderBase]: For 3446/3446 co-relation queries the response was YES. [2024-06-27 19:25:25,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 656 conditions, 186 events. 83/186 cut-off events. For 3446/3446 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 581 event pairs, 22 based on Foata normal form. 6/191 useless extension candidates. Maximal degree in co-relation 628. Up to 117 conditions per place. [2024-06-27 19:25:25,442 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 28 selfloop transitions, 8 changer transitions 12/50 dead transitions. [2024-06-27 19:25:25,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 50 transitions, 328 flow [2024-06-27 19:25:25,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:25:25,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:25:25,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 93 transitions. [2024-06-27 19:25:25,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3 [2024-06-27 19:25:25,442 INFO L175 Difference]: Start difference. First operand has 79 places, 37 transitions, 204 flow. Second operand 10 states and 93 transitions. [2024-06-27 19:25:25,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 50 transitions, 328 flow [2024-06-27 19:25:25,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 50 transitions, 302 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 19:25:25,445 INFO L231 Difference]: Finished difference. Result has 73 places, 33 transitions, 179 flow [2024-06-27 19:25:25,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=179, PETRI_PLACES=73, PETRI_TRANSITIONS=33} [2024-06-27 19:25:25,446 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 43 predicate places. [2024-06-27 19:25:25,446 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 33 transitions, 179 flow [2024-06-27 19:25:25,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:25,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:25:25,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:25:25,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2024-06-27 19:25:25,447 INFO L420 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:25:25,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:25:25,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1805495829, now seen corresponding path program 34 times [2024-06-27 19:25:25,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:25:25,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095723436] [2024-06-27 19:25:25,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:25:25,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:25:25,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:25:26,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:25:26,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:25:26,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095723436] [2024-06-27 19:25:26,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095723436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:25:26,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:25:26,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:25:26,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293294406] [2024-06-27 19:25:26,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:25:26,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:25:26,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:25:26,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:25:26,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:25:27,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:25:27,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 33 transitions, 179 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:27,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:25:27,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:25:27,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:25:27,305 INFO L124 PetriNetUnfolderBase]: 69/160 cut-off events. [2024-06-27 19:25:27,305 INFO L125 PetriNetUnfolderBase]: For 2886/2886 co-relation queries the response was YES. [2024-06-27 19:25:27,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 568 conditions, 160 events. 69/160 cut-off events. For 2886/2886 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 468 event pairs, 18 based on Foata normal form. 6/165 useless extension candidates. Maximal degree in co-relation 542. Up to 91 conditions per place. [2024-06-27 19:25:27,306 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 23 selfloop transitions, 6 changer transitions 15/46 dead transitions. [2024-06-27 19:25:27,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 46 transitions, 295 flow [2024-06-27 19:25:27,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:25:27,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:25:27,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 91 transitions. [2024-06-27 19:25:27,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29354838709677417 [2024-06-27 19:25:27,306 INFO L175 Difference]: Start difference. First operand has 73 places, 33 transitions, 179 flow. Second operand 10 states and 91 transitions. [2024-06-27 19:25:27,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 46 transitions, 295 flow [2024-06-27 19:25:27,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 46 transitions, 271 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 19:25:27,308 INFO L231 Difference]: Finished difference. Result has 67 places, 28 transitions, 147 flow [2024-06-27 19:25:27,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=147, PETRI_PLACES=67, PETRI_TRANSITIONS=28} [2024-06-27 19:25:27,309 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 37 predicate places. [2024-06-27 19:25:27,309 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 28 transitions, 147 flow [2024-06-27 19:25:27,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:27,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:25:27,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:25:27,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2024-06-27 19:25:27,309 INFO L420 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:25:27,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:25:27,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1468438693, now seen corresponding path program 35 times [2024-06-27 19:25:27,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:25:27,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056719802] [2024-06-27 19:25:27,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:25:27,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:25:27,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:25:29,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:25:29,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:25:29,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056719802] [2024-06-27 19:25:29,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056719802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:25:29,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:25:29,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:25:29,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432641063] [2024-06-27 19:25:29,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:25:29,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:25:29,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:25:29,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:25:29,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:25:29,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:25:29,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 28 transitions, 147 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:29,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:25:29,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:25:29,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:25:29,286 INFO L124 PetriNetUnfolderBase]: 53/128 cut-off events. [2024-06-27 19:25:29,287 INFO L125 PetriNetUnfolderBase]: For 2146/2146 co-relation queries the response was YES. [2024-06-27 19:25:29,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 459 conditions, 128 events. 53/128 cut-off events. For 2146/2146 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 329 event pairs, 16 based on Foata normal form. 6/133 useless extension candidates. Maximal degree in co-relation 436. Up to 64 conditions per place. [2024-06-27 19:25:29,287 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 18 selfloop transitions, 4 changer transitions 18/42 dead transitions. [2024-06-27 19:25:29,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 42 transitions, 257 flow [2024-06-27 19:25:29,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:25:29,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:25:29,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 96 transitions. [2024-06-27 19:25:29,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28152492668621704 [2024-06-27 19:25:29,288 INFO L175 Difference]: Start difference. First operand has 67 places, 28 transitions, 147 flow. Second operand 11 states and 96 transitions. [2024-06-27 19:25:29,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 42 transitions, 257 flow [2024-06-27 19:25:29,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 42 transitions, 235 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-27 19:25:29,291 INFO L231 Difference]: Finished difference. Result has 60 places, 22 transitions, 108 flow [2024-06-27 19:25:29,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=108, PETRI_PLACES=60, PETRI_TRANSITIONS=22} [2024-06-27 19:25:29,291 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 30 predicate places. [2024-06-27 19:25:29,292 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 22 transitions, 108 flow [2024-06-27 19:25:29,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:29,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:25:29,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:25:29,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2024-06-27 19:25:29,292 INFO L420 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:25:29,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:25:29,293 INFO L85 PathProgramCache]: Analyzing trace with hash -279042667, now seen corresponding path program 36 times [2024-06-27 19:25:29,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:25:29,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681689245] [2024-06-27 19:25:29,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:25:29,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:25:29,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:25:30,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:25:30,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:25:30,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681689245] [2024-06-27 19:25:30,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681689245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:25:30,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:25:30,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:25:30,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079471895] [2024-06-27 19:25:30,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:25:30,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:25:30,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:25:30,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:25:30,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:25:30,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 19:25:30,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 22 transitions, 108 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:30,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:25:30,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 19:25:30,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:25:30,526 INFO L124 PetriNetUnfolderBase]: 24/65 cut-off events. [2024-06-27 19:25:30,526 INFO L125 PetriNetUnfolderBase]: For 672/672 co-relation queries the response was YES. [2024-06-27 19:25:30,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 65 events. 24/65 cut-off events. For 672/672 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 93 event pairs, 1 based on Foata normal form. 6/70 useless extension candidates. Maximal degree in co-relation 166. Up to 32 conditions per place. [2024-06-27 19:25:30,526 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 0 selfloop transitions, 0 changer transitions 28/28 dead transitions. [2024-06-27 19:25:30,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 28 transitions, 142 flow [2024-06-27 19:25:30,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:25:30,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:25:30,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 77 transitions. [2024-06-27 19:25:30,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24838709677419354 [2024-06-27 19:25:30,527 INFO L175 Difference]: Start difference. First operand has 60 places, 22 transitions, 108 flow. Second operand 10 states and 77 transitions. [2024-06-27 19:25:30,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 28 transitions, 142 flow [2024-06-27 19:25:30,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 28 transitions, 114 flow, removed 1 selfloop flow, removed 14 redundant places. [2024-06-27 19:25:30,527 INFO L231 Difference]: Finished difference. Result has 43 places, 0 transitions, 0 flow [2024-06-27 19:25:30,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=43, PETRI_TRANSITIONS=0} [2024-06-27 19:25:30,528 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 13 predicate places. [2024-06-27 19:25:30,528 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 0 transitions, 0 flow [2024-06-27 19:25:30,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:30,530 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-27 19:25:30,530 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-27 19:25:30,530 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-27 19:25:30,531 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-27 19:25:30,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2024-06-27 19:25:30,531 INFO L445 BasicCegarLoop]: Path program histogram: [42, 36, 26, 23, 14, 14, 7, 7, 6, 6, 5, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:25:30,534 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 19:25:30,534 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 19:25:30,537 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-27 19:25:30,537 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-27 19:25:30,538 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 07:25:30 BasicIcfg [2024-06-27 19:25:30,538 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 19:25:30,539 INFO L158 Benchmark]: Toolchain (without parser) took 450559.75ms. Allocated memory was 157.3MB in the beginning and 1.6GB in the end (delta: 1.5GB). Free memory was 127.9MB in the beginning and 1.0GB in the end (delta: -891.4MB). Peak memory consumption was 558.5MB. Max. memory is 16.1GB. [2024-06-27 19:25:30,539 INFO L158 Benchmark]: Witness Parser took 0.22ms. Allocated memory is still 96.5MB. Free memory is still 46.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 19:25:30,539 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 157.3MB. Free memory is still 133.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 19:25:30,539 INFO L158 Benchmark]: CACSL2BoogieTranslator took 793.17ms. Allocated memory is still 157.3MB. Free memory was 127.9MB in the beginning and 105.7MB in the end (delta: 22.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-06-27 19:25:30,540 INFO L158 Benchmark]: Boogie Procedure Inliner took 94.29ms. Allocated memory is still 157.3MB. Free memory was 105.7MB in the beginning and 102.1MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-27 19:25:30,540 INFO L158 Benchmark]: Boogie Preprocessor took 96.78ms. Allocated memory is still 157.3MB. Free memory was 102.1MB in the beginning and 97.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-27 19:25:30,540 INFO L158 Benchmark]: RCFGBuilder took 951.93ms. Allocated memory is still 157.3MB. Free memory was 97.9MB in the beginning and 88.7MB in the end (delta: 9.2MB). Peak memory consumption was 31.9MB. Max. memory is 16.1GB. [2024-06-27 19:25:30,540 INFO L158 Benchmark]: TraceAbstraction took 448615.48ms. Allocated memory was 157.3MB in the beginning and 1.6GB in the end (delta: 1.5GB). Free memory was 87.8MB in the beginning and 1.0GB in the end (delta: -931.5MB). Peak memory consumption was 521.6MB. Max. memory is 16.1GB. [2024-06-27 19:25:30,542 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.22ms. Allocated memory is still 96.5MB. Free memory is still 46.3MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.14ms. Allocated memory is still 157.3MB. Free memory is still 133.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 793.17ms. Allocated memory is still 157.3MB. Free memory was 127.9MB in the beginning and 105.7MB in the end (delta: 22.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 94.29ms. Allocated memory is still 157.3MB. Free memory was 105.7MB in the beginning and 102.1MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 96.78ms. Allocated memory is still 157.3MB. Free memory was 102.1MB in the beginning and 97.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 951.93ms. Allocated memory is still 157.3MB. Free memory was 97.9MB in the beginning and 88.7MB in the end (delta: 9.2MB). Peak memory consumption was 31.9MB. Max. memory is 16.1GB. * TraceAbstraction took 448615.48ms. Allocated memory was 157.3MB in the beginning and 1.6GB in the end (delta: 1.5GB). Free memory was 87.8MB in the beginning and 1.0GB in the end (delta: -931.5MB). Peak memory consumption was 521.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 829]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 830]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 50 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 448.5s, OverallIterations: 225, TraceHistogramMax: 1, PathProgramHistogramMax: 42, EmptinessCheckTime: 0.0s, AutomataDifference: 201.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11903 SdHoareTripleChecker+Valid, 59.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10351 mSDsluCounter, 10655 SdHoareTripleChecker+Invalid, 51.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9147 mSDsCounter, 2814 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 88279 IncrementalHoareTripleChecker+Invalid, 91093 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2814 mSolverCounterUnsat, 1508 mSDtfsCounter, 88279 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2576 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 2557 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5238 ImplicationChecksByTransitivity, 79.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4487occurred in iteration=132, InterpolantAutomatonStates: 2207, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 243.5s InterpolantComputationTime, 3805 NumberOfCodeBlocks, 3805 NumberOfCodeBlocksAsserted, 225 NumberOfCheckSat, 3580 ConstructedInterpolants, 0 QuantifiedInterpolants, 171247 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 225 InterpolantComputations, 225 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-27 19:25:30,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE