./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix022_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/mix022_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/mix022_tso.i ./goblint.2024-06-19_11-23-25.files/protection/mix022_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 20:09:25,600 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 20:09:25,650 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 20:09:25,660 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 20:09:25,661 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 20:09:25,682 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 20:09:25,686 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 20:09:25,686 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 20:09:25,687 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 20:09:25,690 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 20:09:25,690 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 20:09:25,690 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 20:09:25,691 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 20:09:25,693 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 20:09:25,693 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 20:09:25,693 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 20:09:25,693 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 20:09:25,693 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 20:09:25,694 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 20:09:25,694 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 20:09:25,694 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 20:09:25,694 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 20:09:25,695 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 20:09:25,695 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 20:09:25,695 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 20:09:25,695 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 20:09:25,695 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 20:09:25,696 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 20:09:25,696 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 20:09:25,696 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 20:09:25,697 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 20:09:25,697 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 20:09:25,697 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 20:09:25,698 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 20:09:25,698 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 20:09:25,698 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 20:09:25,698 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 20:09:25,698 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 20:09:25,699 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 20:09:25,699 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 20:09:25,699 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 20:09:25,699 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 20:09:25,699 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 20:09:25,700 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 20:09:25,868 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 20:09:25,903 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 20:09:25,905 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 20:09:25,906 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 20:09:25,907 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 20:09:25,908 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix022_tso.i [2024-06-27 20:09:26,899 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 20:09:27,096 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 20:09:27,097 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix022_tso.i [2024-06-27 20:09:27,111 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe4e62510/a976ed57728549bcaa58df6c4b11e83f/FLAG08ea39581 [2024-06-27 20:09:27,120 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe4e62510/a976ed57728549bcaa58df6c4b11e83f [2024-06-27 20:09:27,122 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 20:09:27,123 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 20:09:27,123 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix022_tso.yml/witness.yml [2024-06-27 20:09:27,254 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 20:09:27,255 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 20:09:27,257 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 20:09:27,257 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 20:09:27,260 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 20:09:27,261 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 08:09:27" (1/2) ... [2024-06-27 20:09:27,262 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@442191b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:09:27, skipping insertion in model container [2024-06-27 20:09:27,262 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 08:09:27" (1/2) ... [2024-06-27 20:09:27,264 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@992df96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:09:27, skipping insertion in model container [2024-06-27 20:09:27,264 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 08:09:27" (2/2) ... [2024-06-27 20:09:27,264 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@442191b9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:09:27, skipping insertion in model container [2024-06-27 20:09:27,265 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 08:09:27" (2/2) ... [2024-06-27 20:09:27,265 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 20:09:27,324 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 20:09:27,326 INFO L97 edCorrectnessWitness]: Location invariant before [L814-L814] ((((((((((((((! multithreaded || x$read_delayed_var == 0) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) [2024-06-27 20:09:27,326 INFO L97 edCorrectnessWitness]: Location invariant before [L813-L813] ((((((((((((((! multithreaded || x$read_delayed_var == 0) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) [2024-06-27 20:09:27,326 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 20:09:27,326 INFO L106 edCorrectnessWitness]: ghost_update [L811-L811] multithreaded = 1; [2024-06-27 20:09:27,365 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 20:09:27,680 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 20:09:27,689 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 20:09:27,806 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 20:09:27,843 INFO L206 MainTranslator]: Completed translation [2024-06-27 20:09:27,844 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:09:27 WrapperNode [2024-06-27 20:09:27,844 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 20:09:27,845 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 20:09:27,845 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 20:09:27,845 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 20:09:27,850 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:09:27" (1/1) ... [2024-06-27 20:09:27,879 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:09:27" (1/1) ... [2024-06-27 20:09:27,910 INFO L138 Inliner]: procedures = 174, calls = 36, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 154 [2024-06-27 20:09:27,910 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 20:09:27,911 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 20:09:27,911 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 20:09:27,912 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 20:09:27,920 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:09:27" (1/1) ... [2024-06-27 20:09:27,920 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:09:27" (1/1) ... [2024-06-27 20:09:27,934 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:09:27" (1/1) ... [2024-06-27 20:09:27,953 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 20:09:27,958 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:09:27" (1/1) ... [2024-06-27 20:09:27,959 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:09:27" (1/1) ... [2024-06-27 20:09:27,969 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:09:27" (1/1) ... [2024-06-27 20:09:27,977 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:09:27" (1/1) ... [2024-06-27 20:09:27,978 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:09:27" (1/1) ... [2024-06-27 20:09:27,984 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:09:27" (1/1) ... [2024-06-27 20:09:27,987 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 20:09:27,990 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 20:09:27,991 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 20:09:27,991 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 20:09:27,991 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:09:27" (1/1) ... [2024-06-27 20:09:27,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 20:09:28,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 20:09:28,016 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 20:09:28,035 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 20:09:28,049 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 20:09:28,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 20:09:28,050 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 20:09:28,050 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 20:09:28,050 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 20:09:28,050 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 20:09:28,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 20:09:28,051 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 20:09:28,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 20:09:28,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 20:09:28,052 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 20:09:28,187 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 20:09:28,189 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 20:09:28,497 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 20:09:28,498 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 20:09:28,651 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 20:09:28,652 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 20:09:28,654 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 08:09:28 BoogieIcfgContainer [2024-06-27 20:09:28,654 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 20:09:28,657 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 20:09:28,657 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 20:09:28,659 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 20:09:28,659 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 08:09:27" (1/4) ... [2024-06-27 20:09:28,660 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@103c17ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 08:09:28, skipping insertion in model container [2024-06-27 20:09:28,661 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 08:09:27" (2/4) ... [2024-06-27 20:09:28,661 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@103c17ca and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 08:09:28, skipping insertion in model container [2024-06-27 20:09:28,661 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:09:27" (3/4) ... [2024-06-27 20:09:28,661 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@103c17ca and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 08:09:28, skipping insertion in model container [2024-06-27 20:09:28,661 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 08:09:28" (4/4) ... [2024-06-27 20:09:28,662 INFO L112 eAbstractionObserver]: Analyzing ICFG mix022_tso.i [2024-06-27 20:09:28,675 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 20:09:28,676 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-27 20:09:28,676 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 20:09:28,730 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 20:09:28,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 30 transitions, 68 flow [2024-06-27 20:09:28,782 INFO L124 PetriNetUnfolderBase]: 0/28 cut-off events. [2024-06-27 20:09:28,782 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 20:09:28,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 28 events. 0/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-27 20:09:28,785 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 30 transitions, 68 flow [2024-06-27 20:09:28,787 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 22 transitions, 50 flow [2024-06-27 20:09:28,799 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 20:09:28,805 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;@6b7d7749, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 20:09:28,805 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-27 20:09:28,809 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 20:09:28,809 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 20:09:28,809 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 20:09:28,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:09:28,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 20:09:28,811 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 20:09:28,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:09:28,842 INFO L85 PathProgramCache]: Analyzing trace with hash 364174474, now seen corresponding path program 1 times [2024-06-27 20:09:28,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:09:28,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343356250] [2024-06-27 20:09:28,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:09:28,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:09:28,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:09:29,497 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 20:09:29,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:09:29,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343356250] [2024-06-27 20:09:29,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343356250] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:09:29,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:09:29,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 20:09:29,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876891918] [2024-06-27 20:09:29,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:09:29,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 20:09:29,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:09:29,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 20:09:29,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 20:09:29,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 20:09:29,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:09:29,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:09:29,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 20:09:29,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:09:29,691 INFO L124 PetriNetUnfolderBase]: 162/306 cut-off events. [2024-06-27 20:09:29,691 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-27 20:09:29,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 617 conditions, 306 events. 162/306 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1111 event pairs, 97 based on Foata normal form. 1/294 useless extension candidates. Maximal degree in co-relation 606. Up to 288 conditions per place. [2024-06-27 20:09:29,697 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 21 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2024-06-27 20:09:29,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 28 transitions, 113 flow [2024-06-27 20:09:29,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 20:09:29,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 20:09:29,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2024-06-27 20:09:29,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-06-27 20:09:29,708 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 50 flow. Second operand 3 states and 50 transitions. [2024-06-27 20:09:29,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 28 transitions, 113 flow [2024-06-27 20:09:29,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 28 transitions, 110 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 20:09:29,712 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 69 flow [2024-06-27 20:09:29,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2024-06-27 20:09:29,717 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2024-06-27 20:09:29,717 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 69 flow [2024-06-27 20:09:29,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:09:29,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:09:29,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:09:29,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 20:09:29,718 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 20:09:29,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:09:29,718 INFO L85 PathProgramCache]: Analyzing trace with hash 2079351977, now seen corresponding path program 1 times [2024-06-27 20:09:29,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:09:29,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599634510] [2024-06-27 20:09:29,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:09:29,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:09:29,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:09:29,991 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 20:09:29,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:09:29,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599634510] [2024-06-27 20:09:29,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599634510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:09:29,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:09:29,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 20:09:29,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682927514] [2024-06-27 20:09:29,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:09:29,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 20:09:29,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:09:29,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 20:09:29,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 20:09:30,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:09:30,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 69 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 20:09:30,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:09:30,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:09:30,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:09:30,092 INFO L124 PetriNetUnfolderBase]: 186/336 cut-off events. [2024-06-27 20:09:30,092 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2024-06-27 20:09:30,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 778 conditions, 336 events. 186/336 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1173 event pairs, 94 based on Foata normal form. 2/337 useless extension candidates. Maximal degree in co-relation 766. Up to 319 conditions per place. [2024-06-27 20:09:30,094 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 26 selfloop transitions, 5 changer transitions 0/34 dead transitions. [2024-06-27 20:09:30,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 34 transitions, 157 flow [2024-06-27 20:09:30,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 20:09:30,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 20:09:30,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 61 transitions. [2024-06-27 20:09:30,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5083333333333333 [2024-06-27 20:09:30,096 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 69 flow. Second operand 4 states and 61 transitions. [2024-06-27 20:09:30,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 34 transitions, 157 flow [2024-06-27 20:09:30,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 34 transitions, 154 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 20:09:30,100 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 93 flow [2024-06-27 20:09:30,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=93, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2024-06-27 20:09:30,101 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 4 predicate places. [2024-06-27 20:09:30,102 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 93 flow [2024-06-27 20:09:30,102 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 20:09:30,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:09:30,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:09:30,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 20:09:30,103 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 20:09:30,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:09:30,105 INFO L85 PathProgramCache]: Analyzing trace with hash 35402953, now seen corresponding path program 1 times [2024-06-27 20:09:30,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:09:30,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981946845] [2024-06-27 20:09:30,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:09:30,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:09:30,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:09:30,412 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 20:09:30,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:09:30,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981946845] [2024-06-27 20:09:30,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981946845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:09:30,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:09:30,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 20:09:30,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319453473] [2024-06-27 20:09:30,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:09:30,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 20:09:30,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:09:30,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 20:09:30,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 20:09:30,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:09:30,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 93 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 20:09:30,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:09:30,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:09:30,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:09:30,524 INFO L124 PetriNetUnfolderBase]: 180/326 cut-off events. [2024-06-27 20:09:30,524 INFO L125 PetriNetUnfolderBase]: For 195/195 co-relation queries the response was YES. [2024-06-27 20:09:30,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 836 conditions, 326 events. 180/326 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1108 event pairs, 52 based on Foata normal form. 4/329 useless extension candidates. Maximal degree in co-relation 822. Up to 291 conditions per place. [2024-06-27 20:09:30,529 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 31 selfloop transitions, 7 changer transitions 0/41 dead transitions. [2024-06-27 20:09:30,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 41 transitions, 209 flow [2024-06-27 20:09:30,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 20:09:30,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 20:09:30,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 75 transitions. [2024-06-27 20:09:30,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 20:09:30,533 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 93 flow. Second operand 5 states and 75 transitions. [2024-06-27 20:09:30,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 41 transitions, 209 flow [2024-06-27 20:09:30,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 41 transitions, 200 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 20:09:30,536 INFO L231 Difference]: Finished difference. Result has 36 places, 28 transitions, 117 flow [2024-06-27 20:09:30,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=117, PETRI_PLACES=36, PETRI_TRANSITIONS=28} [2024-06-27 20:09:30,537 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 7 predicate places. [2024-06-27 20:09:30,537 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 28 transitions, 117 flow [2024-06-27 20:09:30,537 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 20:09:30,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:09:30,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:09:30,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 20:09:30,538 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 20:09:30,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:09:30,539 INFO L85 PathProgramCache]: Analyzing trace with hash -2055807826, now seen corresponding path program 1 times [2024-06-27 20:09:30,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:09:30,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157626474] [2024-06-27 20:09:30,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:09:30,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:09:30,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:09:31,287 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 20:09:31,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:09:31,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157626474] [2024-06-27 20:09:31,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157626474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:09:31,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:09:31,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:09:31,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471673150] [2024-06-27 20:09:31,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:09:31,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:09:31,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:09:31,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:09:31,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:09:31,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:09:31,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 28 transitions, 117 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 20:09:31,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:09:31,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:09:31,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:09:31,436 INFO L124 PetriNetUnfolderBase]: 176/318 cut-off events. [2024-06-27 20:09:31,437 INFO L125 PetriNetUnfolderBase]: For 314/314 co-relation queries the response was YES. [2024-06-27 20:09:31,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 888 conditions, 318 events. 176/318 cut-off events. For 314/314 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1063 event pairs, 30 based on Foata normal form. 4/321 useless extension candidates. Maximal degree in co-relation 873. Up to 265 conditions per place. [2024-06-27 20:09:31,439 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 31 selfloop transitions, 8 changer transitions 0/42 dead transitions. [2024-06-27 20:09:31,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 42 transitions, 223 flow [2024-06-27 20:09:31,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:09:31,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:09:31,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 83 transitions. [2024-06-27 20:09:31,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46111111111111114 [2024-06-27 20:09:31,442 INFO L175 Difference]: Start difference. First operand has 36 places, 28 transitions, 117 flow. Second operand 6 states and 83 transitions. [2024-06-27 20:09:31,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 42 transitions, 223 flow [2024-06-27 20:09:31,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 42 transitions, 208 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 20:09:31,445 INFO L231 Difference]: Finished difference. Result has 38 places, 27 transitions, 114 flow [2024-06-27 20:09:31,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=114, PETRI_PLACES=38, PETRI_TRANSITIONS=27} [2024-06-27 20:09:31,446 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2024-06-27 20:09:31,446 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 27 transitions, 114 flow [2024-06-27 20:09:31,446 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 20:09:31,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:09:31,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:09:31,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 20:09:31,447 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 20:09:31,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:09:31,447 INFO L85 PathProgramCache]: Analyzing trace with hash -955188088, now seen corresponding path program 1 times [2024-06-27 20:09:31,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:09:31,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188724736] [2024-06-27 20:09:31,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:09:31,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:09:31,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:09:31,851 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 20:09:31,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:09:31,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188724736] [2024-06-27 20:09:31,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188724736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:09:31,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:09:31,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 20:09:31,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928802228] [2024-06-27 20:09:31,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:09:31,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 20:09:31,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:09:31,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 20:09:31,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 20:09:31,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 20:09:31,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 27 transitions, 114 flow. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 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 20:09:31,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:09:31,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 20:09:31,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:09:32,001 INFO L124 PetriNetUnfolderBase]: 147/282 cut-off events. [2024-06-27 20:09:32,002 INFO L125 PetriNetUnfolderBase]: For 377/377 co-relation queries the response was YES. [2024-06-27 20:09:32,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 809 conditions, 282 events. 147/282 cut-off events. For 377/377 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 986 event pairs, 53 based on Foata normal form. 1/282 useless extension candidates. Maximal degree in co-relation 792. Up to 259 conditions per place. [2024-06-27 20:09:32,003 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 25 selfloop transitions, 6 changer transitions 0/34 dead transitions. [2024-06-27 20:09:32,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 34 transitions, 194 flow [2024-06-27 20:09:32,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 20:09:32,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 20:09:32,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 58 transitions. [2024-06-27 20:09:32,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38666666666666666 [2024-06-27 20:09:32,005 INFO L175 Difference]: Start difference. First operand has 38 places, 27 transitions, 114 flow. Second operand 5 states and 58 transitions. [2024-06-27 20:09:32,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 34 transitions, 194 flow [2024-06-27 20:09:32,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 34 transitions, 174 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 20:09:32,010 INFO L231 Difference]: Finished difference. Result has 39 places, 29 transitions, 121 flow [2024-06-27 20:09:32,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=121, PETRI_PLACES=39, PETRI_TRANSITIONS=29} [2024-06-27 20:09:32,014 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 10 predicate places. [2024-06-27 20:09:32,014 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 29 transitions, 121 flow [2024-06-27 20:09:32,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 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 20:09:32,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:09:32,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:09:32,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 20:09:32,016 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 20:09:32,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:09:32,017 INFO L85 PathProgramCache]: Analyzing trace with hash 453941276, now seen corresponding path program 1 times [2024-06-27 20:09:32,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:09:32,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854766298] [2024-06-27 20:09:32,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:09:32,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:09:32,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:09:32,641 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 20:09:32,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:09:32,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854766298] [2024-06-27 20:09:32,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854766298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:09:32,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:09:32,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:09:32,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904327842] [2024-06-27 20:09:32,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:09:32,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:09:32,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:09:32,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:09:32,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:09:32,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 20:09:32,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 29 transitions, 121 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 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 20:09:32,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:09:32,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 20:09:32,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:09:32,790 INFO L124 PetriNetUnfolderBase]: 145/279 cut-off events. [2024-06-27 20:09:32,790 INFO L125 PetriNetUnfolderBase]: For 477/477 co-relation queries the response was YES. [2024-06-27 20:09:32,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 835 conditions, 279 events. 145/279 cut-off events. For 477/477 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 967 event pairs, 52 based on Foata normal form. 1/279 useless extension candidates. Maximal degree in co-relation 816. Up to 253 conditions per place. [2024-06-27 20:09:32,791 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 26 selfloop transitions, 8 changer transitions 0/37 dead transitions. [2024-06-27 20:09:32,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 37 transitions, 211 flow [2024-06-27 20:09:32,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:09:32,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:09:32,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 67 transitions. [2024-06-27 20:09:32,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37222222222222223 [2024-06-27 20:09:32,793 INFO L175 Difference]: Start difference. First operand has 39 places, 29 transitions, 121 flow. Second operand 6 states and 67 transitions. [2024-06-27 20:09:32,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 37 transitions, 211 flow [2024-06-27 20:09:32,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 37 transitions, 200 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-27 20:09:32,794 INFO L231 Difference]: Finished difference. Result has 42 places, 31 transitions, 143 flow [2024-06-27 20:09:32,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=143, PETRI_PLACES=42, PETRI_TRANSITIONS=31} [2024-06-27 20:09:32,795 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 13 predicate places. [2024-06-27 20:09:32,795 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 31 transitions, 143 flow [2024-06-27 20:09:32,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 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 20:09:32,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:09:32,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:09:32,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 20:09:32,796 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 20:09:32,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:09:32,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1451998865, now seen corresponding path program 1 times [2024-06-27 20:09:32,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:09:32,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618163639] [2024-06-27 20:09:32,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:09:32,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:09:32,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:09:33,190 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 20:09:33,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:09:33,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618163639] [2024-06-27 20:09:33,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618163639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:09:33,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:09:33,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:09:33,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64304392] [2024-06-27 20:09:33,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:09:33,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:09:33,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:09:33,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:09:33,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:09:33,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:09:33,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 31 transitions, 143 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 20:09:33,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:09:33,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:09:33,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:09:33,371 INFO L124 PetriNetUnfolderBase]: 173/314 cut-off events. [2024-06-27 20:09:33,371 INFO L125 PetriNetUnfolderBase]: For 745/745 co-relation queries the response was YES. [2024-06-27 20:09:33,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1026 conditions, 314 events. 173/314 cut-off events. For 745/745 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1050 event pairs, 62 based on Foata normal form. 1/314 useless extension candidates. Maximal degree in co-relation 1006. Up to 294 conditions per place. [2024-06-27 20:09:33,373 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 32 selfloop transitions, 8 changer transitions 0/42 dead transitions. [2024-06-27 20:09:33,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 42 transitions, 253 flow [2024-06-27 20:09:33,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:09:33,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:09:33,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 65 transitions. [2024-06-27 20:09:33,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-27 20:09:33,374 INFO L175 Difference]: Start difference. First operand has 42 places, 31 transitions, 143 flow. Second operand 6 states and 65 transitions. [2024-06-27 20:09:33,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 42 transitions, 253 flow [2024-06-27 20:09:33,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 42 transitions, 236 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 20:09:33,376 INFO L231 Difference]: Finished difference. Result has 44 places, 33 transitions, 159 flow [2024-06-27 20:09:33,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=159, PETRI_PLACES=44, PETRI_TRANSITIONS=33} [2024-06-27 20:09:33,376 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 15 predicate places. [2024-06-27 20:09:33,377 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 33 transitions, 159 flow [2024-06-27 20:09:33,377 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 20:09:33,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:09:33,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:09:33,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 20:09:33,377 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 20:09:33,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:09:33,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1461979625, now seen corresponding path program 2 times [2024-06-27 20:09:33,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:09:33,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298743126] [2024-06-27 20:09:33,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:09:33,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:09:33,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:09:33,731 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 20:09:33,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:09:33,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298743126] [2024-06-27 20:09:33,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298743126] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:09:33,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:09:33,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:09:33,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656791636] [2024-06-27 20:09:33,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:09:33,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:09:33,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:09:33,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:09:33,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:09:33,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:09:33,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 33 transitions, 159 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 20:09:33,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:09:33,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:09:33,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:09:33,858 INFO L124 PetriNetUnfolderBase]: 171/312 cut-off events. [2024-06-27 20:09:33,859 INFO L125 PetriNetUnfolderBase]: For 968/970 co-relation queries the response was YES. [2024-06-27 20:09:33,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1076 conditions, 312 events. 171/312 cut-off events. For 968/970 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1061 event pairs, 66 based on Foata normal form. 3/314 useless extension candidates. Maximal degree in co-relation 1055. Up to 285 conditions per place. [2024-06-27 20:09:33,860 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 28 selfloop transitions, 11 changer transitions 0/41 dead transitions. [2024-06-27 20:09:33,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 41 transitions, 263 flow [2024-06-27 20:09:33,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:09:33,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:09:33,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2024-06-27 20:09:33,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35555555555555557 [2024-06-27 20:09:33,862 INFO L175 Difference]: Start difference. First operand has 44 places, 33 transitions, 159 flow. Second operand 6 states and 64 transitions. [2024-06-27 20:09:33,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 41 transitions, 263 flow [2024-06-27 20:09:33,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 41 transitions, 246 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 20:09:33,863 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 185 flow [2024-06-27 20:09:33,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=185, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2024-06-27 20:09:33,864 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 17 predicate places. [2024-06-27 20:09:33,864 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 185 flow [2024-06-27 20:09:33,864 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 20:09:33,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:09:33,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:09:33,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 20:09:33,865 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 20:09:33,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:09:33,865 INFO L85 PathProgramCache]: Analyzing trace with hash 828998667, now seen corresponding path program 1 times [2024-06-27 20:09:33,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:09:33,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096967093] [2024-06-27 20:09:33,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:09:33,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:09:33,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:09:34,271 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 20:09:34,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:09:34,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096967093] [2024-06-27 20:09:34,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096967093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:09:34,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:09:34,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:09:34,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749128663] [2024-06-27 20:09:34,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:09:34,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:09:34,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:09:34,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:09:34,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:09:34,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:09:34,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 185 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 20:09:34,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:09:34,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:09:34,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:09:34,482 INFO L124 PetriNetUnfolderBase]: 193/352 cut-off events. [2024-06-27 20:09:34,482 INFO L125 PetriNetUnfolderBase]: For 1305/1305 co-relation queries the response was YES. [2024-06-27 20:09:34,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1268 conditions, 352 events. 193/352 cut-off events. For 1305/1305 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1235 event pairs, 44 based on Foata normal form. 2/353 useless extension candidates. Maximal degree in co-relation 1246. Up to 291 conditions per place. [2024-06-27 20:09:34,484 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 41 selfloop transitions, 16 changer transitions 0/59 dead transitions. [2024-06-27 20:09:34,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 59 transitions, 383 flow [2024-06-27 20:09:34,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:09:34,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:09:34,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-27 20:09:34,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-27 20:09:34,486 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 185 flow. Second operand 8 states and 88 transitions. [2024-06-27 20:09:34,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 59 transitions, 383 flow [2024-06-27 20:09:34,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 59 transitions, 352 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 20:09:34,488 INFO L231 Difference]: Finished difference. Result has 53 places, 44 transitions, 261 flow [2024-06-27 20:09:34,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=261, PETRI_PLACES=53, PETRI_TRANSITIONS=44} [2024-06-27 20:09:34,489 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 24 predicate places. [2024-06-27 20:09:34,489 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 261 flow [2024-06-27 20:09:34,489 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 20:09:34,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:09:34,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:09:34,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 20:09:34,490 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 20:09:34,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:09:34,490 INFO L85 PathProgramCache]: Analyzing trace with hash 2062172631, now seen corresponding path program 2 times [2024-06-27 20:09:34,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:09:34,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718339479] [2024-06-27 20:09:34,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:09:34,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:09:34,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:09:34,893 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 20:09:34,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:09:34,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718339479] [2024-06-27 20:09:34,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718339479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:09:34,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:09:34,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:09:34,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717384885] [2024-06-27 20:09:34,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:09:34,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:09:34,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:09:34,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:09:34,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:09:34,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:09:34,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 261 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 20:09:34,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:09:34,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:09:34,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:09:35,150 INFO L124 PetriNetUnfolderBase]: 199/362 cut-off events. [2024-06-27 20:09:35,151 INFO L125 PetriNetUnfolderBase]: For 1745/1745 co-relation queries the response was YES. [2024-06-27 20:09:35,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1461 conditions, 362 events. 199/362 cut-off events. For 1745/1745 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1282 event pairs, 43 based on Foata normal form. 2/363 useless extension candidates. Maximal degree in co-relation 1435. Up to 293 conditions per place. [2024-06-27 20:09:35,153 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 39 selfloop transitions, 21 changer transitions 0/62 dead transitions. [2024-06-27 20:09:35,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 62 transitions, 455 flow [2024-06-27 20:09:35,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:09:35,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:09:35,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-27 20:09:35,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37142857142857144 [2024-06-27 20:09:35,154 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 261 flow. Second operand 7 states and 78 transitions. [2024-06-27 20:09:35,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 62 transitions, 455 flow [2024-06-27 20:09:35,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 62 transitions, 430 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-27 20:09:35,157 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 334 flow [2024-06-27 20:09:35,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=334, PETRI_PLACES=58, PETRI_TRANSITIONS=49} [2024-06-27 20:09:35,157 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 29 predicate places. [2024-06-27 20:09:35,158 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 334 flow [2024-06-27 20:09:35,158 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 20:09:35,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:09:35,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:09:35,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 20:09:35,158 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 20:09:35,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:09:35,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1410837351, now seen corresponding path program 1 times [2024-06-27 20:09:35,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:09:35,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367941492] [2024-06-27 20:09:35,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:09:35,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:09:35,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:09:35,673 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 20:09:35,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:09:35,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367941492] [2024-06-27 20:09:35,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367941492] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:09:35,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:09:35,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:09:35,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890506451] [2024-06-27 20:09:35,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:09:35,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:09:35,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:09:35,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:09:35,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:09:35,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:09:35,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 49 transitions, 334 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 20:09:35,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:09:35,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:09:35,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:09:35,884 INFO L124 PetriNetUnfolderBase]: 202/367 cut-off events. [2024-06-27 20:09:35,884 INFO L125 PetriNetUnfolderBase]: For 2175/2175 co-relation queries the response was YES. [2024-06-27 20:09:35,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1610 conditions, 367 events. 202/367 cut-off events. For 2175/2175 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1313 event pairs, 45 based on Foata normal form. 1/367 useless extension candidates. Maximal degree in co-relation 1582. Up to 337 conditions per place. [2024-06-27 20:09:35,887 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 47 selfloop transitions, 12 changer transitions 0/61 dead transitions. [2024-06-27 20:09:35,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 61 transitions, 492 flow [2024-06-27 20:09:35,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:09:35,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:09:35,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 73 transitions. [2024-06-27 20:09:35,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3476190476190476 [2024-06-27 20:09:35,888 INFO L175 Difference]: Start difference. First operand has 58 places, 49 transitions, 334 flow. Second operand 7 states and 73 transitions. [2024-06-27 20:09:35,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 61 transitions, 492 flow [2024-06-27 20:09:35,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 61 transitions, 459 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-27 20:09:35,891 INFO L231 Difference]: Finished difference. Result has 62 places, 51 transitions, 344 flow [2024-06-27 20:09:35,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=344, PETRI_PLACES=62, PETRI_TRANSITIONS=51} [2024-06-27 20:09:35,891 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 33 predicate places. [2024-06-27 20:09:35,892 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 51 transitions, 344 flow [2024-06-27 20:09:35,892 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 20:09:35,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:09:35,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:09:35,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 20:09:35,892 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 20:09:35,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:09:35,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1410837165, now seen corresponding path program 3 times [2024-06-27 20:09:35,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:09:35,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395538819] [2024-06-27 20:09:35,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:09:35,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:09:35,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:09:36,318 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 20:09:36,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:09:36,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395538819] [2024-06-27 20:09:36,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395538819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:09:36,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:09:36,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:09:36,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556145834] [2024-06-27 20:09:36,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:09:36,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:09:36,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:09:36,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:09:36,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:09:36,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:09:36,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 51 transitions, 344 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 20:09:36,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:09:36,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:09:36,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:09:36,544 INFO L124 PetriNetUnfolderBase]: 213/385 cut-off events. [2024-06-27 20:09:36,544 INFO L125 PetriNetUnfolderBase]: For 2257/2257 co-relation queries the response was YES. [2024-06-27 20:09:36,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1664 conditions, 385 events. 213/385 cut-off events. For 2257/2257 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1378 event pairs, 47 based on Foata normal form. 2/386 useless extension candidates. Maximal degree in co-relation 1635. Up to 299 conditions per place. [2024-06-27 20:09:36,547 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 42 selfloop transitions, 23 changer transitions 0/67 dead transitions. [2024-06-27 20:09:36,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 67 transitions, 560 flow [2024-06-27 20:09:36,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:09:36,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:09:36,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-27 20:09:36,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3761904761904762 [2024-06-27 20:09:36,548 INFO L175 Difference]: Start difference. First operand has 62 places, 51 transitions, 344 flow. Second operand 7 states and 79 transitions. [2024-06-27 20:09:36,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 67 transitions, 560 flow [2024-06-27 20:09:36,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 67 transitions, 533 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 20:09:36,552 INFO L231 Difference]: Finished difference. Result has 64 places, 55 transitions, 404 flow [2024-06-27 20:09:36,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=404, PETRI_PLACES=64, PETRI_TRANSITIONS=55} [2024-06-27 20:09:36,553 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 35 predicate places. [2024-06-27 20:09:36,553 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 55 transitions, 404 flow [2024-06-27 20:09:36,553 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 20:09:36,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:09:36,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:09:36,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 20:09:36,553 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 20:09:36,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:09:36,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1849076037, now seen corresponding path program 2 times [2024-06-27 20:09:36,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:09:36,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407975247] [2024-06-27 20:09:36,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:09:36,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:09:36,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:09:37,068 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 20:09:37,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:09:37,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407975247] [2024-06-27 20:09:37,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407975247] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:09:37,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:09:37,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:09:37,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473846718] [2024-06-27 20:09:37,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:09:37,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:09:37,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:09:37,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:09:37,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:09:37,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:09:37,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 55 transitions, 404 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 20:09:37,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:09:37,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:09:37,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:09:37,252 INFO L124 PetriNetUnfolderBase]: 216/390 cut-off events. [2024-06-27 20:09:37,253 INFO L125 PetriNetUnfolderBase]: For 2734/2738 co-relation queries the response was YES. [2024-06-27 20:09:37,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1780 conditions, 390 events. 216/390 cut-off events. For 2734/2738 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1400 event pairs, 47 based on Foata normal form. 5/394 useless extension candidates. Maximal degree in co-relation 1750. Up to 344 conditions per place. [2024-06-27 20:09:37,256 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 48 selfloop transitions, 19 changer transitions 0/69 dead transitions. [2024-06-27 20:09:37,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 69 transitions, 618 flow [2024-06-27 20:09:37,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:09:37,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:09:37,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 74 transitions. [2024-06-27 20:09:37,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3523809523809524 [2024-06-27 20:09:37,257 INFO L175 Difference]: Start difference. First operand has 64 places, 55 transitions, 404 flow. Second operand 7 states and 74 transitions. [2024-06-27 20:09:37,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 69 transitions, 618 flow [2024-06-27 20:09:37,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 69 transitions, 591 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-27 20:09:37,262 INFO L231 Difference]: Finished difference. Result has 69 places, 60 transitions, 466 flow [2024-06-27 20:09:37,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=466, PETRI_PLACES=69, PETRI_TRANSITIONS=60} [2024-06-27 20:09:37,262 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 40 predicate places. [2024-06-27 20:09:37,262 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 60 transitions, 466 flow [2024-06-27 20:09:37,263 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 20:09:37,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:09:37,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:09:37,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 20:09:37,263 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 20:09:37,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:09:37,264 INFO L85 PathProgramCache]: Analyzing trace with hash 2066934231, now seen corresponding path program 4 times [2024-06-27 20:09:37,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:09:37,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168372356] [2024-06-27 20:09:37,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:09:37,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:09:37,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:09:37,683 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 20:09:37,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:09:37,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168372356] [2024-06-27 20:09:37,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168372356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:09:37,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:09:37,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:09:37,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83089102] [2024-06-27 20:09:37,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:09:37,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:09:37,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:09:37,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:09:37,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:09:37,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:09:37,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 60 transitions, 466 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 20:09:37,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:09:37,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:09:37,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:09:37,867 INFO L124 PetriNetUnfolderBase]: 212/384 cut-off events. [2024-06-27 20:09:37,867 INFO L125 PetriNetUnfolderBase]: For 3043/3047 co-relation queries the response was YES. [2024-06-27 20:09:37,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1827 conditions, 384 events. 212/384 cut-off events. For 3043/3047 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1390 event pairs, 55 based on Foata normal form. 3/386 useless extension candidates. Maximal degree in co-relation 1794. Up to 286 conditions per place. [2024-06-27 20:09:37,870 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 43 selfloop transitions, 27 changer transitions 0/72 dead transitions. [2024-06-27 20:09:37,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 72 transitions, 678 flow [2024-06-27 20:09:37,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:09:37,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:09:37,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-27 20:09:37,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37142857142857144 [2024-06-27 20:09:37,871 INFO L175 Difference]: Start difference. First operand has 69 places, 60 transitions, 466 flow. Second operand 7 states and 78 transitions. [2024-06-27 20:09:37,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 72 transitions, 678 flow [2024-06-27 20:09:37,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 72 transitions, 652 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-27 20:09:37,876 INFO L231 Difference]: Finished difference. Result has 73 places, 62 transitions, 523 flow [2024-06-27 20:09:37,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=523, PETRI_PLACES=73, PETRI_TRANSITIONS=62} [2024-06-27 20:09:37,877 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 44 predicate places. [2024-06-27 20:09:37,877 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 62 transitions, 523 flow [2024-06-27 20:09:37,877 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 20:09:37,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:09:37,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:09:37,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 20:09:37,877 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 20:09:37,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:09:37,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1849313187, now seen corresponding path program 3 times [2024-06-27 20:09:37,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:09:37,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543944659] [2024-06-27 20:09:37,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:09:37,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:09:37,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:09:38,401 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 20:09:38,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:09:38,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543944659] [2024-06-27 20:09:38,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543944659] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:09:38,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:09:38,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:09:38,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132588354] [2024-06-27 20:09:38,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:09:38,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:09:38,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:09:38,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:09:38,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:09:38,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:09:38,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 62 transitions, 523 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 20:09:38,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:09:38,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:09:38,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:09:38,564 INFO L124 PetriNetUnfolderBase]: 210/381 cut-off events. [2024-06-27 20:09:38,564 INFO L125 PetriNetUnfolderBase]: For 3352/3356 co-relation queries the response was YES. [2024-06-27 20:09:38,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1907 conditions, 381 events. 210/381 cut-off events. For 3352/3356 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1387 event pairs, 46 based on Foata normal form. 5/385 useless extension candidates. Maximal degree in co-relation 1872. Up to 345 conditions per place. [2024-06-27 20:09:38,567 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 54 selfloop transitions, 15 changer transitions 0/71 dead transitions. [2024-06-27 20:09:38,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 71 transitions, 692 flow [2024-06-27 20:09:38,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:09:38,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:09:38,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 72 transitions. [2024-06-27 20:09:38,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34285714285714286 [2024-06-27 20:09:38,568 INFO L175 Difference]: Start difference. First operand has 73 places, 62 transitions, 523 flow. Second operand 7 states and 72 transitions. [2024-06-27 20:09:38,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 71 transitions, 692 flow [2024-06-27 20:09:38,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 71 transitions, 619 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-27 20:09:38,573 INFO L231 Difference]: Finished difference. Result has 75 places, 63 transitions, 494 flow [2024-06-27 20:09:38,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=494, PETRI_PLACES=75, PETRI_TRANSITIONS=63} [2024-06-27 20:09:38,574 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 46 predicate places. [2024-06-27 20:09:38,575 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 63 transitions, 494 flow [2024-06-27 20:09:38,575 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 20:09:38,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:09:38,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:09:38,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 20:09:38,575 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 20:09:38,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:09:38,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1849067109, now seen corresponding path program 1 times [2024-06-27 20:09:38,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:09:38,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063503388] [2024-06-27 20:09:38,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:09:38,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:09:38,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:09:39,506 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 20:09:39,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:09:39,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063503388] [2024-06-27 20:09:39,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063503388] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:09:39,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:09:39,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:09:39,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437410531] [2024-06-27 20:09:39,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:09:39,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:09:39,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:09:39,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:09:39,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:09:39,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:09:39,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 63 transitions, 494 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 20:09:39,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:09:39,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:09:39,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:09:39,719 INFO L124 PetriNetUnfolderBase]: 208/378 cut-off events. [2024-06-27 20:09:39,719 INFO L125 PetriNetUnfolderBase]: For 3515/3515 co-relation queries the response was YES. [2024-06-27 20:09:39,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1857 conditions, 378 events. 208/378 cut-off events. For 3515/3515 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1362 event pairs, 48 based on Foata normal form. 1/378 useless extension candidates. Maximal degree in co-relation 1821. Up to 355 conditions per place. [2024-06-27 20:09:39,721 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 59 selfloop transitions, 12 changer transitions 0/73 dead transitions. [2024-06-27 20:09:39,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 73 transitions, 666 flow [2024-06-27 20:09:39,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:09:39,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:09:39,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 78 transitions. [2024-06-27 20:09:39,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325 [2024-06-27 20:09:39,723 INFO L175 Difference]: Start difference. First operand has 75 places, 63 transitions, 494 flow. Second operand 8 states and 78 transitions. [2024-06-27 20:09:39,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 73 transitions, 666 flow [2024-06-27 20:09:39,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 73 transitions, 635 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 20:09:39,727 INFO L231 Difference]: Finished difference. Result has 78 places, 65 transitions, 506 flow [2024-06-27 20:09:39,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=506, PETRI_PLACES=78, PETRI_TRANSITIONS=65} [2024-06-27 20:09:39,728 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 49 predicate places. [2024-06-27 20:09:39,728 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 65 transitions, 506 flow [2024-06-27 20:09:39,728 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 20:09:39,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:09:39,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:09:39,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 20:09:39,729 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 20:09:39,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:09:39,729 INFO L85 PathProgramCache]: Analyzing trace with hash -497247312, now seen corresponding path program 1 times [2024-06-27 20:09:39,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:09:39,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513811480] [2024-06-27 20:09:39,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:09:39,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:09:39,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:09:40,348 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 20:09:40,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:09:40,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513811480] [2024-06-27 20:09:40,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513811480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:09:40,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:09:40,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:09:40,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132342253] [2024-06-27 20:09:40,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:09:40,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:09:40,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:09:40,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:09:40,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:09:40,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:09:40,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 65 transitions, 506 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 20:09:40,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:09:40,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:09:40,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:09:40,650 INFO L124 PetriNetUnfolderBase]: 206/375 cut-off events. [2024-06-27 20:09:40,650 INFO L125 PetriNetUnfolderBase]: For 3702/3702 co-relation queries the response was YES. [2024-06-27 20:09:40,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1874 conditions, 375 events. 206/375 cut-off events. For 3702/3702 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1351 event pairs, 43 based on Foata normal form. 1/375 useless extension candidates. Maximal degree in co-relation 1837. Up to 301 conditions per place. [2024-06-27 20:09:40,653 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 55 selfloop transitions, 21 changer transitions 0/78 dead transitions. [2024-06-27 20:09:40,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 78 transitions, 698 flow [2024-06-27 20:09:40,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:09:40,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:09:40,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-27 20:09:40,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37142857142857144 [2024-06-27 20:09:40,654 INFO L175 Difference]: Start difference. First operand has 78 places, 65 transitions, 506 flow. Second operand 7 states and 78 transitions. [2024-06-27 20:09:40,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 78 transitions, 698 flow [2024-06-27 20:09:40,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 78 transitions, 643 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-27 20:09:40,660 INFO L231 Difference]: Finished difference. Result has 78 places, 65 transitions, 506 flow [2024-06-27 20:09:40,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=506, PETRI_PLACES=78, PETRI_TRANSITIONS=65} [2024-06-27 20:09:40,660 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 49 predicate places. [2024-06-27 20:09:40,661 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 65 transitions, 506 flow [2024-06-27 20:09:40,661 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 20:09:40,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:09:40,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:09:40,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 20:09:40,661 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 20:09:40,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:09:40,662 INFO L85 PathProgramCache]: Analyzing trace with hash 782561017, now seen corresponding path program 1 times [2024-06-27 20:09:40,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:09:40,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485881587] [2024-06-27 20:09:40,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:09:40,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:09:40,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:09:41,159 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 20:09:41,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:09:41,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485881587] [2024-06-27 20:09:41,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485881587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:09:41,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:09:41,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:09:41,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277262063] [2024-06-27 20:09:41,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:09:41,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:09:41,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:09:41,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:09:41,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:09:41,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:09:41,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 65 transitions, 506 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 20:09:41,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:09:41,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:09:41,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:09:41,411 INFO L124 PetriNetUnfolderBase]: 212/385 cut-off events. [2024-06-27 20:09:41,412 INFO L125 PetriNetUnfolderBase]: For 4370/4370 co-relation queries the response was YES. [2024-06-27 20:09:41,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1954 conditions, 385 events. 212/385 cut-off events. For 4370/4370 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1409 event pairs, 39 based on Foata normal form. 2/386 useless extension candidates. Maximal degree in co-relation 1917. Up to 304 conditions per place. [2024-06-27 20:09:41,414 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 57 selfloop transitions, 23 changer transitions 0/82 dead transitions. [2024-06-27 20:09:41,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 82 transitions, 728 flow [2024-06-27 20:09:41,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:09:41,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:09:41,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-27 20:09:41,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-27 20:09:41,416 INFO L175 Difference]: Start difference. First operand has 78 places, 65 transitions, 506 flow. Second operand 8 states and 87 transitions. [2024-06-27 20:09:41,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 82 transitions, 728 flow [2024-06-27 20:09:41,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 82 transitions, 680 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-27 20:09:41,422 INFO L231 Difference]: Finished difference. Result has 80 places, 67 transitions, 530 flow [2024-06-27 20:09:41,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=530, PETRI_PLACES=80, PETRI_TRANSITIONS=67} [2024-06-27 20:09:41,422 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 51 predicate places. [2024-06-27 20:09:41,422 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 67 transitions, 530 flow [2024-06-27 20:09:41,422 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 20:09:41,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:09:41,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:09:41,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 20:09:41,423 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 20:09:41,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:09:41,423 INFO L85 PathProgramCache]: Analyzing trace with hash 786280087, now seen corresponding path program 2 times [2024-06-27 20:09:41,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:09:41,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295837234] [2024-06-27 20:09:41,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:09:41,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:09:41,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:09:41,967 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 20:09:41,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:09:41,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295837234] [2024-06-27 20:09:41,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295837234] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:09:41,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:09:41,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:09:41,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448690228] [2024-06-27 20:09:41,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:09:41,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:09:41,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:09:41,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:09:41,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:09:42,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:09:42,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 67 transitions, 530 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 20:09:42,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:09:42,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:09:42,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:09:42,195 INFO L124 PetriNetUnfolderBase]: 218/395 cut-off events. [2024-06-27 20:09:42,195 INFO L125 PetriNetUnfolderBase]: For 4948/4948 co-relation queries the response was YES. [2024-06-27 20:09:42,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2067 conditions, 395 events. 218/395 cut-off events. For 4948/4948 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1439 event pairs, 44 based on Foata normal form. 2/396 useless extension candidates. Maximal degree in co-relation 2029. Up to 302 conditions per place. [2024-06-27 20:09:42,198 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 55 selfloop transitions, 25 changer transitions 0/82 dead transitions. [2024-06-27 20:09:42,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 82 transitions, 748 flow [2024-06-27 20:09:42,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:09:42,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:09:42,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-27 20:09:42,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-27 20:09:42,201 INFO L175 Difference]: Start difference. First operand has 80 places, 67 transitions, 530 flow. Second operand 8 states and 87 transitions. [2024-06-27 20:09:42,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 82 transitions, 748 flow [2024-06-27 20:09:42,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 82 transitions, 694 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 20:09:42,210 INFO L231 Difference]: Finished difference. Result has 82 places, 69 transitions, 555 flow [2024-06-27 20:09:42,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=555, PETRI_PLACES=82, PETRI_TRANSITIONS=69} [2024-06-27 20:09:42,210 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 53 predicate places. [2024-06-27 20:09:42,210 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 69 transitions, 555 flow [2024-06-27 20:09:42,211 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 20:09:42,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:09:42,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:09:42,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 20:09:42,211 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 20:09:42,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:09:42,211 INFO L85 PathProgramCache]: Analyzing trace with hash 786285884, now seen corresponding path program 1 times [2024-06-27 20:09:42,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:09:42,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794969264] [2024-06-27 20:09:42,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:09:42,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:09:42,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:09:42,785 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 20:09:42,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:09:42,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794969264] [2024-06-27 20:09:42,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794969264] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:09:42,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:09:42,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:09:42,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955742129] [2024-06-27 20:09:42,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:09:42,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:09:42,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:09:42,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:09:42,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:09:42,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:09:42,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 69 transitions, 555 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 20:09:42,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:09:42,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:09:42,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:09:43,013 INFO L124 PetriNetUnfolderBase]: 224/405 cut-off events. [2024-06-27 20:09:43,013 INFO L125 PetriNetUnfolderBase]: For 5509/5509 co-relation queries the response was YES. [2024-06-27 20:09:43,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2160 conditions, 405 events. 224/405 cut-off events. For 5509/5509 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1485 event pairs, 45 based on Foata normal form. 2/406 useless extension candidates. Maximal degree in co-relation 2121. Up to 369 conditions per place. [2024-06-27 20:09:43,016 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 67 selfloop transitions, 14 changer transitions 0/83 dead transitions. [2024-06-27 20:09:43,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 83 transitions, 769 flow [2024-06-27 20:09:43,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:09:43,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:09:43,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 82 transitions. [2024-06-27 20:09:43,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3416666666666667 [2024-06-27 20:09:43,017 INFO L175 Difference]: Start difference. First operand has 82 places, 69 transitions, 555 flow. Second operand 8 states and 82 transitions. [2024-06-27 20:09:43,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 83 transitions, 769 flow [2024-06-27 20:09:43,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 83 transitions, 706 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 20:09:43,025 INFO L231 Difference]: Finished difference. Result has 84 places, 71 transitions, 545 flow [2024-06-27 20:09:43,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=545, PETRI_PLACES=84, PETRI_TRANSITIONS=71} [2024-06-27 20:09:43,025 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 55 predicate places. [2024-06-27 20:09:43,026 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 71 transitions, 545 flow [2024-06-27 20:09:43,026 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 20:09:43,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:09:43,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:09:43,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 20:09:43,026 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 20:09:43,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:09:43,027 INFO L85 PathProgramCache]: Analyzing trace with hash 786285667, now seen corresponding path program 3 times [2024-06-27 20:09:43,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:09:43,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072882949] [2024-06-27 20:09:43,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:09:43,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:09:43,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:09:43,583 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 20:09:43,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:09:43,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072882949] [2024-06-27 20:09:43,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072882949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:09:43,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:09:43,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:09:43,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700113934] [2024-06-27 20:09:43,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:09:43,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:09:43,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:09:43,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:09:43,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:09:43,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:09:43,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 71 transitions, 545 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 20:09:43,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:09:43,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:09:43,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:09:43,838 INFO L124 PetriNetUnfolderBase]: 230/415 cut-off events. [2024-06-27 20:09:43,838 INFO L125 PetriNetUnfolderBase]: For 5962/5962 co-relation queries the response was YES. [2024-06-27 20:09:43,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2226 conditions, 415 events. 230/415 cut-off events. For 5962/5962 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1530 event pairs, 45 based on Foata normal form. 2/416 useless extension candidates. Maximal degree in co-relation 2186. Up to 379 conditions per place. [2024-06-27 20:09:43,841 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 69 selfloop transitions, 14 changer transitions 0/85 dead transitions. [2024-06-27 20:09:43,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 85 transitions, 771 flow [2024-06-27 20:09:43,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:09:43,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:09:43,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 82 transitions. [2024-06-27 20:09:43,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3416666666666667 [2024-06-27 20:09:43,842 INFO L175 Difference]: Start difference. First operand has 84 places, 71 transitions, 545 flow. Second operand 8 states and 82 transitions. [2024-06-27 20:09:43,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 85 transitions, 771 flow [2024-06-27 20:09:43,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 85 transitions, 734 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 20:09:43,851 INFO L231 Difference]: Finished difference. Result has 86 places, 73 transitions, 569 flow [2024-06-27 20:09:43,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=569, PETRI_PLACES=86, PETRI_TRANSITIONS=73} [2024-06-27 20:09:43,852 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 57 predicate places. [2024-06-27 20:09:43,852 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 73 transitions, 569 flow [2024-06-27 20:09:43,853 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 20:09:43,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:09:43,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:09:43,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 20:09:43,853 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 20:09:43,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:09:43,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1989747141, now seen corresponding path program 4 times [2024-06-27 20:09:43,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:09:43,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599398584] [2024-06-27 20:09:43,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:09:43,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:09:43,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:09:44,362 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 20:09:44,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:09:44,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599398584] [2024-06-27 20:09:44,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599398584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:09:44,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:09:44,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:09:44,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925635536] [2024-06-27 20:09:44,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:09:44,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:09:44,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:09:44,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:09:44,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:09:44,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:09:44,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 73 transitions, 569 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 20:09:44,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:09:44,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:09:44,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:09:44,584 INFO L124 PetriNetUnfolderBase]: 246/441 cut-off events. [2024-06-27 20:09:44,584 INFO L125 PetriNetUnfolderBase]: For 7212/7216 co-relation queries the response was YES. [2024-06-27 20:09:44,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2450 conditions, 441 events. 246/441 cut-off events. For 7212/7216 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1660 event pairs, 47 based on Foata normal form. 6/446 useless extension candidates. Maximal degree in co-relation 2409. Up to 375 conditions per place. [2024-06-27 20:09:44,587 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 63 selfloop transitions, 24 changer transitions 0/89 dead transitions. [2024-06-27 20:09:44,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 89 transitions, 875 flow [2024-06-27 20:09:44,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:09:44,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:09:44,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 85 transitions. [2024-06-27 20:09:44,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-27 20:09:44,588 INFO L175 Difference]: Start difference. First operand has 86 places, 73 transitions, 569 flow. Second operand 8 states and 85 transitions. [2024-06-27 20:09:44,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 89 transitions, 875 flow [2024-06-27 20:09:44,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 89 transitions, 830 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-27 20:09:44,596 INFO L231 Difference]: Finished difference. Result has 88 places, 77 transitions, 637 flow [2024-06-27 20:09:44,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=637, PETRI_PLACES=88, PETRI_TRANSITIONS=77} [2024-06-27 20:09:44,596 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 59 predicate places. [2024-06-27 20:09:44,596 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 77 transitions, 637 flow [2024-06-27 20:09:44,596 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 20:09:44,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:09:44,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:09:44,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 20:09:44,597 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 20:09:44,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:09:44,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1486781336, now seen corresponding path program 2 times [2024-06-27 20:09:44,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:09:44,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40622912] [2024-06-27 20:09:44,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:09:44,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:09:44,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:09:45,182 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 20:09:45,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:09:45,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40622912] [2024-06-27 20:09:45,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40622912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:09:45,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:09:45,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:09:45,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650262201] [2024-06-27 20:09:45,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:09:45,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:09:45,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:09:45,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:09:45,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:09:45,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:09:45,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 77 transitions, 637 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 20:09:45,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:09:45,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:09:45,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:09:45,416 INFO L124 PetriNetUnfolderBase]: 262/467 cut-off events. [2024-06-27 20:09:45,417 INFO L125 PetriNetUnfolderBase]: For 8493/8493 co-relation queries the response was YES. [2024-06-27 20:09:45,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2681 conditions, 467 events. 262/467 cut-off events. For 8493/8493 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1773 event pairs, 48 based on Foata normal form. 2/468 useless extension candidates. Maximal degree in co-relation 2639. Up to 384 conditions per place. [2024-06-27 20:09:45,420 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 66 selfloop transitions, 31 changer transitions 0/99 dead transitions. [2024-06-27 20:09:45,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 99 transitions, 1040 flow [2024-06-27 20:09:45,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:09:45,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:09:45,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-27 20:09:45,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35185185185185186 [2024-06-27 20:09:45,421 INFO L175 Difference]: Start difference. First operand has 88 places, 77 transitions, 637 flow. Second operand 9 states and 95 transitions. [2024-06-27 20:09:45,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 99 transitions, 1040 flow [2024-06-27 20:09:45,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 99 transitions, 994 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-27 20:09:45,430 INFO L231 Difference]: Finished difference. Result has 94 places, 86 transitions, 754 flow [2024-06-27 20:09:45,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=592, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=754, PETRI_PLACES=94, PETRI_TRANSITIONS=86} [2024-06-27 20:09:45,431 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 65 predicate places. [2024-06-27 20:09:45,431 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 86 transitions, 754 flow [2024-06-27 20:09:45,431 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 20:09:45,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:09:45,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:09:45,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 20:09:45,431 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 20:09:45,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:09:45,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1990014268, now seen corresponding path program 3 times [2024-06-27 20:09:45,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:09:45,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719987953] [2024-06-27 20:09:45,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:09:45,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:09:45,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:09:46,009 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 20:09:46,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:09:46,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719987953] [2024-06-27 20:09:46,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719987953] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:09:46,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:09:46,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:09:46,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170034318] [2024-06-27 20:09:46,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:09:46,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:09:46,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:09:46,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:09:46,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:09:46,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:09:46,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 86 transitions, 754 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 20:09:46,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:09:46,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:09:46,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:09:46,244 INFO L124 PetriNetUnfolderBase]: 258/461 cut-off events. [2024-06-27 20:09:46,244 INFO L125 PetriNetUnfolderBase]: For 8676/8676 co-relation queries the response was YES. [2024-06-27 20:09:46,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2701 conditions, 461 events. 258/461 cut-off events. For 8676/8676 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1735 event pairs, 50 based on Foata normal form. 2/462 useless extension candidates. Maximal degree in co-relation 2656. Up to 430 conditions per place. [2024-06-27 20:09:46,248 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 79 selfloop transitions, 13 changer transitions 0/94 dead transitions. [2024-06-27 20:09:46,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 94 transitions, 958 flow [2024-06-27 20:09:46,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:09:46,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:09:46,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 80 transitions. [2024-06-27 20:09:46,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-27 20:09:46,249 INFO L175 Difference]: Start difference. First operand has 94 places, 86 transitions, 754 flow. Second operand 8 states and 80 transitions. [2024-06-27 20:09:46,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 94 transitions, 958 flow [2024-06-27 20:09:46,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 94 transitions, 916 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-06-27 20:09:46,259 INFO L231 Difference]: Finished difference. Result has 100 places, 86 transitions, 744 flow [2024-06-27 20:09:46,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=712, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=744, PETRI_PLACES=100, PETRI_TRANSITIONS=86} [2024-06-27 20:09:46,260 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 71 predicate places. [2024-06-27 20:09:46,260 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 86 transitions, 744 flow [2024-06-27 20:09:46,260 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 20:09:46,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:09:46,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:09:46,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 20:09:46,261 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 20:09:46,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:09:46,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1494138783, now seen corresponding path program 5 times [2024-06-27 20:09:46,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:09:46,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179973944] [2024-06-27 20:09:46,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:09:46,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:09:46,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:09:46,764 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 20:09:46,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:09:46,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179973944] [2024-06-27 20:09:46,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179973944] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:09:46,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:09:46,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:09:46,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387880929] [2024-06-27 20:09:46,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:09:46,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:09:46,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:09:46,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:09:46,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:09:46,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:09:46,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 86 transitions, 744 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 20:09:46,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:09:46,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:09:46,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:09:46,945 INFO L124 PetriNetUnfolderBase]: 259/464 cut-off events. [2024-06-27 20:09:46,945 INFO L125 PetriNetUnfolderBase]: For 9120/9120 co-relation queries the response was YES. [2024-06-27 20:09:46,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2710 conditions, 464 events. 259/464 cut-off events. For 9120/9120 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1773 event pairs, 53 based on Foata normal form. 2/465 useless extension candidates. Maximal degree in co-relation 2662. Up to 358 conditions per place. [2024-06-27 20:09:46,948 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 67 selfloop transitions, 29 changer transitions 0/98 dead transitions. [2024-06-27 20:09:46,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 98 transitions, 996 flow [2024-06-27 20:09:46,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:09:46,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:09:46,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-27 20:09:46,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35833333333333334 [2024-06-27 20:09:46,950 INFO L175 Difference]: Start difference. First operand has 100 places, 86 transitions, 744 flow. Second operand 8 states and 86 transitions. [2024-06-27 20:09:46,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 98 transitions, 996 flow [2024-06-27 20:09:46,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 98 transitions, 965 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-27 20:09:46,963 INFO L231 Difference]: Finished difference. Result has 101 places, 88 transitions, 812 flow [2024-06-27 20:09:46,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=713, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=812, PETRI_PLACES=101, PETRI_TRANSITIONS=88} [2024-06-27 20:09:46,963 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 72 predicate places. [2024-06-27 20:09:46,963 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 88 transitions, 812 flow [2024-06-27 20:09:46,964 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 20:09:46,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:09:46,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:09:46,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 20:09:46,964 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 20:09:46,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:09:46,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1982395708, now seen corresponding path program 4 times [2024-06-27 20:09:46,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:09:46,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679973120] [2024-06-27 20:09:46,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:09:46,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:09:46,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:09:47,505 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 20:09:47,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:09:47,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679973120] [2024-06-27 20:09:47,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679973120] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:09:47,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:09:47,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:09:47,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496868104] [2024-06-27 20:09:47,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:09:47,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:09:47,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:09:47,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:09:47,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:09:47,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:09:47,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 88 transitions, 812 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 20:09:47,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:09:47,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:09:47,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:09:47,703 INFO L124 PetriNetUnfolderBase]: 255/457 cut-off events. [2024-06-27 20:09:47,703 INFO L125 PetriNetUnfolderBase]: For 9409/9409 co-relation queries the response was YES. [2024-06-27 20:09:47,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2726 conditions, 457 events. 255/457 cut-off events. For 9409/9409 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1731 event pairs, 48 based on Foata normal form. 2/458 useless extension candidates. Maximal degree in co-relation 2677. Up to 415 conditions per place. [2024-06-27 20:09:47,707 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 76 selfloop transitions, 18 changer transitions 0/96 dead transitions. [2024-06-27 20:09:47,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 96 transitions, 1020 flow [2024-06-27 20:09:47,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:09:47,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:09:47,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 81 transitions. [2024-06-27 20:09:47,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-27 20:09:47,708 INFO L175 Difference]: Start difference. First operand has 101 places, 88 transitions, 812 flow. Second operand 8 states and 81 transitions. [2024-06-27 20:09:47,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 96 transitions, 1020 flow [2024-06-27 20:09:47,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 96 transitions, 931 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-27 20:09:47,719 INFO L231 Difference]: Finished difference. Result has 103 places, 88 transitions, 764 flow [2024-06-27 20:09:47,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=723, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=764, PETRI_PLACES=103, PETRI_TRANSITIONS=88} [2024-06-27 20:09:47,720 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 74 predicate places. [2024-06-27 20:09:47,720 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 88 transitions, 764 flow [2024-06-27 20:09:47,720 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 20:09:47,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:09:47,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:09:47,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 20:09:47,721 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 20:09:47,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:09:47,721 INFO L85 PathProgramCache]: Analyzing trace with hash -349541767, now seen corresponding path program 6 times [2024-06-27 20:09:47,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:09:47,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976180274] [2024-06-27 20:09:47,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:09:47,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:09:47,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:09:48,295 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 20:09:48,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:09:48,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976180274] [2024-06-27 20:09:48,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976180274] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:09:48,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:09:48,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:09:48,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425934576] [2024-06-27 20:09:48,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:09:48,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:09:48,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:09:48,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:09:48,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:09:48,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:09:48,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 88 transitions, 764 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 20:09:48,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:09:48,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:09:48,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:09:48,506 INFO L124 PetriNetUnfolderBase]: 251/451 cut-off events. [2024-06-27 20:09:48,507 INFO L125 PetriNetUnfolderBase]: For 9245/9245 co-relation queries the response was YES. [2024-06-27 20:09:48,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2598 conditions, 451 events. 251/451 cut-off events. For 9245/9245 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1699 event pairs, 47 based on Foata normal form. 2/452 useless extension candidates. Maximal degree in co-relation 2548. Up to 409 conditions per place. [2024-06-27 20:09:48,510 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 75 selfloop transitions, 20 changer transitions 0/97 dead transitions. [2024-06-27 20:09:48,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 97 transitions, 983 flow [2024-06-27 20:09:48,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:09:48,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:09:48,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2024-06-27 20:09:48,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32592592592592595 [2024-06-27 20:09:48,511 INFO L175 Difference]: Start difference. First operand has 103 places, 88 transitions, 764 flow. Second operand 9 states and 88 transitions. [2024-06-27 20:09:48,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 97 transitions, 983 flow [2024-06-27 20:09:48,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 97 transitions, 913 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 20:09:48,522 INFO L231 Difference]: Finished difference. Result has 105 places, 88 transitions, 739 flow [2024-06-27 20:09:48,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=694, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=739, PETRI_PLACES=105, PETRI_TRANSITIONS=88} [2024-06-27 20:09:48,522 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 76 predicate places. [2024-06-27 20:09:48,522 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 88 transitions, 739 flow [2024-06-27 20:09:48,523 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 20:09:48,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:09:48,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:09:48,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 20:09:48,523 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 20:09:48,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:09:48,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1486504506, now seen corresponding path program 1 times [2024-06-27 20:09:48,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:09:48,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024652504] [2024-06-27 20:09:48,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:09:48,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:09:48,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:09:49,370 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 20:09:49,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:09:49,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024652504] [2024-06-27 20:09:49,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024652504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:09:49,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:09:49,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:09:49,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645147522] [2024-06-27 20:09:49,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:09:49,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:09:49,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:09:49,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:09:49,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:09:49,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:09:49,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 88 transitions, 739 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 20:09:49,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:09:49,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:09:49,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:09:49,609 INFO L124 PetriNetUnfolderBase]: 248/446 cut-off events. [2024-06-27 20:09:49,610 INFO L125 PetriNetUnfolderBase]: For 9092/9092 co-relation queries the response was YES. [2024-06-27 20:09:49,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2524 conditions, 446 events. 248/446 cut-off events. For 9092/9092 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1679 event pairs, 49 based on Foata normal form. 2/447 useless extension candidates. Maximal degree in co-relation 2473. Up to 417 conditions per place. [2024-06-27 20:09:49,617 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 82 selfloop transitions, 13 changer transitions 0/97 dead transitions. [2024-06-27 20:09:49,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 97 transitions, 949 flow [2024-06-27 20:09:49,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:09:49,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:09:49,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 85 transitions. [2024-06-27 20:09:49,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3148148148148148 [2024-06-27 20:09:49,619 INFO L175 Difference]: Start difference. First operand has 105 places, 88 transitions, 739 flow. Second operand 9 states and 85 transitions. [2024-06-27 20:09:49,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 97 transitions, 949 flow [2024-06-27 20:09:49,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 97 transitions, 893 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 20:09:49,630 INFO L231 Difference]: Finished difference. Result has 106 places, 88 transitions, 713 flow [2024-06-27 20:09:49,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=713, PETRI_PLACES=106, PETRI_TRANSITIONS=88} [2024-06-27 20:09:49,633 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 77 predicate places. [2024-06-27 20:09:49,633 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 88 transitions, 713 flow [2024-06-27 20:09:49,634 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 20:09:49,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:09:49,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:09:49,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 20:09:49,634 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 20:09:49,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:09:49,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1765142870, now seen corresponding path program 1 times [2024-06-27 20:09:49,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:09:49,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698560090] [2024-06-27 20:09:49,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:09:49,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:09:49,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:09:50,273 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 20:09:50,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:09:50,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698560090] [2024-06-27 20:09:50,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698560090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:09:50,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:09:50,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:09:50,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474908796] [2024-06-27 20:09:50,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:09:50,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:09:50,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:09:50,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:09:50,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:09:50,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:09:50,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 88 transitions, 713 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 20:09:50,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:09:50,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:09:50,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:09:50,603 INFO L124 PetriNetUnfolderBase]: 252/454 cut-off events. [2024-06-27 20:09:50,604 INFO L125 PetriNetUnfolderBase]: For 9629/9629 co-relation queries the response was YES. [2024-06-27 20:09:50,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2563 conditions, 454 events. 252/454 cut-off events. For 9629/9629 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1719 event pairs, 26 based on Foata normal form. 2/455 useless extension candidates. Maximal degree in co-relation 2511. Up to 370 conditions per place. [2024-06-27 20:09:50,607 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 82 selfloop transitions, 18 changer transitions 0/102 dead transitions. [2024-06-27 20:09:50,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 102 transitions, 959 flow [2024-06-27 20:09:50,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:09:50,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:09:50,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 84 transitions. [2024-06-27 20:09:50,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-27 20:09:50,608 INFO L175 Difference]: Start difference. First operand has 106 places, 88 transitions, 713 flow. Second operand 8 states and 84 transitions. [2024-06-27 20:09:50,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 102 transitions, 959 flow [2024-06-27 20:09:50,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 102 transitions, 927 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 20:09:50,620 INFO L231 Difference]: Finished difference. Result has 107 places, 89 transitions, 737 flow [2024-06-27 20:09:50,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=681, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=737, PETRI_PLACES=107, PETRI_TRANSITIONS=89} [2024-06-27 20:09:50,622 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 78 predicate places. [2024-06-27 20:09:50,622 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 89 transitions, 737 flow [2024-06-27 20:09:50,622 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 20:09:50,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:09:50,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:09:50,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 20:09:50,622 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 20:09:50,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:09:50,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1765203320, now seen corresponding path program 2 times [2024-06-27 20:09:50,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:09:50,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242249887] [2024-06-27 20:09:50,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:09:50,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:09:50,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:09:51,369 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 20:09:51,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:09:51,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242249887] [2024-06-27 20:09:51,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242249887] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:09:51,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:09:51,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:09:51,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483713163] [2024-06-27 20:09:51,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:09:51,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:09:51,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:09:51,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:09:51,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:09:51,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:09:51,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 89 transitions, 737 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 20:09:51,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:09:51,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:09:51,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:09:51,683 INFO L124 PetriNetUnfolderBase]: 256/462 cut-off events. [2024-06-27 20:09:51,683 INFO L125 PetriNetUnfolderBase]: For 10457/10457 co-relation queries the response was YES. [2024-06-27 20:09:51,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2645 conditions, 462 events. 256/462 cut-off events. For 10457/10457 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1779 event pairs, 41 based on Foata normal form. 2/463 useless extension candidates. Maximal degree in co-relation 2592. Up to 378 conditions per place. [2024-06-27 20:09:51,686 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 78 selfloop transitions, 23 changer transitions 0/103 dead transitions. [2024-06-27 20:09:51,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 103 transitions, 989 flow [2024-06-27 20:09:51,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:09:51,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:09:51,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-27 20:09:51,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35833333333333334 [2024-06-27 20:09:51,687 INFO L175 Difference]: Start difference. First operand has 107 places, 89 transitions, 737 flow. Second operand 8 states and 86 transitions. [2024-06-27 20:09:51,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 103 transitions, 989 flow [2024-06-27 20:09:51,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 103 transitions, 943 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 20:09:51,701 INFO L231 Difference]: Finished difference. Result has 109 places, 90 transitions, 761 flow [2024-06-27 20:09:51,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=691, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=761, PETRI_PLACES=109, PETRI_TRANSITIONS=90} [2024-06-27 20:09:51,701 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 80 predicate places. [2024-06-27 20:09:51,701 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 90 transitions, 761 flow [2024-06-27 20:09:51,701 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 20:09:51,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:09:51,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:09:51,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 20:09:51,702 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 20:09:51,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:09:51,702 INFO L85 PathProgramCache]: Analyzing trace with hash -980072080, now seen corresponding path program 1 times [2024-06-27 20:09:51,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:09:51,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884811894] [2024-06-27 20:09:51,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:09:51,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:09:51,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:09:52,451 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 20:09:52,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:09:52,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884811894] [2024-06-27 20:09:52,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884811894] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:09:52,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:09:52,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:09:52,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296946229] [2024-06-27 20:09:52,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:09:52,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:09:52,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:09:52,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:09:52,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:09:52,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:09:52,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 90 transitions, 761 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 20:09:52,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:09:52,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:09:52,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:09:52,655 INFO L124 PetriNetUnfolderBase]: 274/492 cut-off events. [2024-06-27 20:09:52,655 INFO L125 PetriNetUnfolderBase]: For 11169/11169 co-relation queries the response was YES. [2024-06-27 20:09:52,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2823 conditions, 492 events. 274/492 cut-off events. For 11169/11169 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1941 event pairs, 44 based on Foata normal form. 1/492 useless extension candidates. Maximal degree in co-relation 2769. Up to 417 conditions per place. [2024-06-27 20:09:52,659 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 85 selfloop transitions, 26 changer transitions 0/113 dead transitions. [2024-06-27 20:09:52,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 113 transitions, 1140 flow [2024-06-27 20:09:52,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:09:52,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:09:52,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-27 20:09:52,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-27 20:09:52,660 INFO L175 Difference]: Start difference. First operand has 109 places, 90 transitions, 761 flow. Second operand 8 states and 90 transitions. [2024-06-27 20:09:52,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 113 transitions, 1140 flow [2024-06-27 20:09:52,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 113 transitions, 1074 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-27 20:09:52,672 INFO L231 Difference]: Finished difference. Result has 113 places, 100 transitions, 902 flow [2024-06-27 20:09:52,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=705, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=902, PETRI_PLACES=113, PETRI_TRANSITIONS=100} [2024-06-27 20:09:52,673 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 84 predicate places. [2024-06-27 20:09:52,673 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 100 transitions, 902 flow [2024-06-27 20:09:52,673 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 20:09:52,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:09:52,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:09:52,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 20:09:52,674 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 20:09:52,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:09:52,674 INFO L85 PathProgramCache]: Analyzing trace with hash -979951924, now seen corresponding path program 1 times [2024-06-27 20:09:52,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:09:52,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784593558] [2024-06-27 20:09:52,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:09:52,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:09:52,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:09:53,217 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 20:09:53,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:09:53,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784593558] [2024-06-27 20:09:53,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784593558] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:09:53,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:09:53,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:09:53,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537992929] [2024-06-27 20:09:53,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:09:53,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:09:53,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:09:53,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:09:53,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:09:53,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:09:53,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 100 transitions, 902 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 20:09:53,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:09:53,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:09:53,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:09:53,461 INFO L124 PetriNetUnfolderBase]: 280/502 cut-off events. [2024-06-27 20:09:53,461 INFO L125 PetriNetUnfolderBase]: For 12313/12313 co-relation queries the response was YES. [2024-06-27 20:09:53,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2943 conditions, 502 events. 280/502 cut-off events. For 12313/12313 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 1987 event pairs, 36 based on Foata normal form. 2/503 useless extension candidates. Maximal degree in co-relation 2885. Up to 397 conditions per place. [2024-06-27 20:09:53,464 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 84 selfloop transitions, 32 changer transitions 0/118 dead transitions. [2024-06-27 20:09:53,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 118 transitions, 1213 flow [2024-06-27 20:09:53,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:09:53,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:09:53,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-27 20:09:53,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35555555555555557 [2024-06-27 20:09:53,465 INFO L175 Difference]: Start difference. First operand has 113 places, 100 transitions, 902 flow. Second operand 9 states and 96 transitions. [2024-06-27 20:09:53,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 118 transitions, 1213 flow [2024-06-27 20:09:53,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 118 transitions, 1154 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-06-27 20:09:53,481 INFO L231 Difference]: Finished difference. Result has 120 places, 102 transitions, 944 flow [2024-06-27 20:09:53,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=844, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=944, PETRI_PLACES=120, PETRI_TRANSITIONS=102} [2024-06-27 20:09:53,481 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 91 predicate places. [2024-06-27 20:09:53,482 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 102 transitions, 944 flow [2024-06-27 20:09:53,482 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 20:09:53,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:09:53,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:09:53,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 20:09:53,482 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 20:09:53,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:09:53,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1394940626, now seen corresponding path program 2 times [2024-06-27 20:09:53,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:09:53,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377465549] [2024-06-27 20:09:53,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:09:53,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:09:53,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:09:54,021 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 20:09:54,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:09:54,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377465549] [2024-06-27 20:09:54,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377465549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:09:54,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:09:54,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:09:54,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9040076] [2024-06-27 20:09:54,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:09:54,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:09:54,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:09:54,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:09:54,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:09:54,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:09:54,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 102 transitions, 944 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 20:09:54,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:09:54,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:09:54,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:09:54,266 INFO L124 PetriNetUnfolderBase]: 330/583 cut-off events. [2024-06-27 20:09:54,266 INFO L125 PetriNetUnfolderBase]: For 16560/16560 co-relation queries the response was YES. [2024-06-27 20:09:54,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3529 conditions, 583 events. 330/583 cut-off events. For 16560/16560 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2415 event pairs, 46 based on Foata normal form. 4/586 useless extension candidates. Maximal degree in co-relation 3469. Up to 504 conditions per place. [2024-06-27 20:09:54,269 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 104 selfloop transitions, 23 changer transitions 0/129 dead transitions. [2024-06-27 20:09:54,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 129 transitions, 1424 flow [2024-06-27 20:09:54,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:09:54,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:09:54,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-27 20:09:54,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3433333333333333 [2024-06-27 20:09:54,270 INFO L175 Difference]: Start difference. First operand has 120 places, 102 transitions, 944 flow. Second operand 10 states and 103 transitions. [2024-06-27 20:09:54,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 129 transitions, 1424 flow [2024-06-27 20:09:54,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 129 transitions, 1342 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 20:09:54,288 INFO L231 Difference]: Finished difference. Result has 126 places, 114 transitions, 1062 flow [2024-06-27 20:09:54,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=862, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1062, PETRI_PLACES=126, PETRI_TRANSITIONS=114} [2024-06-27 20:09:54,289 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 97 predicate places. [2024-06-27 20:09:54,289 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 114 transitions, 1062 flow [2024-06-27 20:09:54,289 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 20:09:54,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:09:54,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:09:54,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 20:09:54,289 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 20:09:54,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:09:54,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1394947136, now seen corresponding path program 3 times [2024-06-27 20:09:54,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:09:54,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354888320] [2024-06-27 20:09:54,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:09:54,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:09:54,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:09:54,841 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 20:09:54,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:09:54,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354888320] [2024-06-27 20:09:54,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354888320] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:09:54,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:09:54,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:09:54,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014965536] [2024-06-27 20:09:54,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:09:54,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:09:54,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:09:54,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:09:54,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:09:54,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:09:54,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 114 transitions, 1062 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 20:09:54,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:09:54,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:09:54,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:09:55,133 INFO L124 PetriNetUnfolderBase]: 326/577 cut-off events. [2024-06-27 20:09:55,133 INFO L125 PetriNetUnfolderBase]: For 15493/15493 co-relation queries the response was YES. [2024-06-27 20:09:55,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3540 conditions, 577 events. 326/577 cut-off events. For 15493/15493 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2378 event pairs, 46 based on Foata normal form. 2/578 useless extension candidates. Maximal degree in co-relation 3476. Up to 503 conditions per place. [2024-06-27 20:09:55,137 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 104 selfloop transitions, 25 changer transitions 0/131 dead transitions. [2024-06-27 20:09:55,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 131 transitions, 1471 flow [2024-06-27 20:09:55,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:09:55,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:09:55,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-27 20:09:55,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3466666666666667 [2024-06-27 20:09:55,138 INFO L175 Difference]: Start difference. First operand has 126 places, 114 transitions, 1062 flow. Second operand 10 states and 104 transitions. [2024-06-27 20:09:55,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 131 transitions, 1471 flow [2024-06-27 20:09:55,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 131 transitions, 1403 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-27 20:09:55,158 INFO L231 Difference]: Finished difference. Result has 132 places, 117 transitions, 1104 flow [2024-06-27 20:09:55,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=998, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1104, PETRI_PLACES=132, PETRI_TRANSITIONS=117} [2024-06-27 20:09:55,159 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 103 predicate places. [2024-06-27 20:09:55,159 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 117 transitions, 1104 flow [2024-06-27 20:09:55,159 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 20:09:55,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:09:55,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:09:55,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 20:09:55,159 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 20:09:55,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:09:55,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1883291000, now seen corresponding path program 3 times [2024-06-27 20:09:55,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:09:55,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801325773] [2024-06-27 20:09:55,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:09:55,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:09:55,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:09:55,746 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 20:09:55,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:09:55,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801325773] [2024-06-27 20:09:55,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801325773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:09:55,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:09:55,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:09:55,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156267477] [2024-06-27 20:09:55,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:09:55,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:09:55,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:09:55,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:09:55,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:09:55,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:09:55,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 117 transitions, 1104 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 20:09:55,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:09:55,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:09:55,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:09:56,026 INFO L124 PetriNetUnfolderBase]: 330/586 cut-off events. [2024-06-27 20:09:56,026 INFO L125 PetriNetUnfolderBase]: For 16097/16097 co-relation queries the response was YES. [2024-06-27 20:09:56,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3644 conditions, 586 events. 330/586 cut-off events. For 16097/16097 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2424 event pairs, 44 based on Foata normal form. 2/587 useless extension candidates. Maximal degree in co-relation 3578. Up to 487 conditions per place. [2024-06-27 20:09:56,031 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 96 selfloop transitions, 32 changer transitions 0/130 dead transitions. [2024-06-27 20:09:56,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 130 transitions, 1410 flow [2024-06-27 20:09:56,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:09:56,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:09:56,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-27 20:09:56,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35833333333333334 [2024-06-27 20:09:56,036 INFO L175 Difference]: Start difference. First operand has 132 places, 117 transitions, 1104 flow. Second operand 8 states and 86 transitions. [2024-06-27 20:09:56,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 130 transitions, 1410 flow [2024-06-27 20:09:56,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 130 transitions, 1354 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-27 20:09:56,058 INFO L231 Difference]: Finished difference. Result has 134 places, 118 transitions, 1136 flow [2024-06-27 20:09:56,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1048, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1136, PETRI_PLACES=134, PETRI_TRANSITIONS=118} [2024-06-27 20:09:56,059 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 105 predicate places. [2024-06-27 20:09:56,059 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 118 transitions, 1136 flow [2024-06-27 20:09:56,059 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 20:09:56,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:09:56,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:09:56,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 20:09:56,060 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 20:09:56,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:09:56,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1395120116, now seen corresponding path program 4 times [2024-06-27 20:09:56,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:09:56,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457110598] [2024-06-27 20:09:56,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:09:56,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:09:56,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:09:56,603 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 20:09:56,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:09:56,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457110598] [2024-06-27 20:09:56,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457110598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:09:56,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:09:56,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:09:56,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726612996] [2024-06-27 20:09:56,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:09:56,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:09:56,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:09:56,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:09:56,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:09:56,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:09:56,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 118 transitions, 1136 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 20:09:56,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:09:56,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:09:56,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:09:56,979 INFO L124 PetriNetUnfolderBase]: 371/652 cut-off events. [2024-06-27 20:09:56,979 INFO L125 PetriNetUnfolderBase]: For 21739/21739 co-relation queries the response was YES. [2024-06-27 20:09:56,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4328 conditions, 652 events. 371/652 cut-off events. For 21739/21739 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2747 event pairs, 58 based on Foata normal form. 2/653 useless extension candidates. Maximal degree in co-relation 4261. Up to 386 conditions per place. [2024-06-27 20:09:56,984 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 89 selfloop transitions, 52 changer transitions 0/143 dead transitions. [2024-06-27 20:09:56,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 143 transitions, 1744 flow [2024-06-27 20:09:56,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:09:56,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:09:56,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-27 20:09:56,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3851851851851852 [2024-06-27 20:09:56,985 INFO L175 Difference]: Start difference. First operand has 134 places, 118 transitions, 1136 flow. Second operand 9 states and 104 transitions. [2024-06-27 20:09:56,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 143 transitions, 1744 flow [2024-06-27 20:09:57,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 143 transitions, 1666 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 20:09:57,008 INFO L231 Difference]: Finished difference. Result has 138 places, 125 transitions, 1311 flow [2024-06-27 20:09:57,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1058, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1311, PETRI_PLACES=138, PETRI_TRANSITIONS=125} [2024-06-27 20:09:57,009 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 109 predicate places. [2024-06-27 20:09:57,009 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 125 transitions, 1311 flow [2024-06-27 20:09:57,009 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 20:09:57,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:09:57,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:09:57,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 20:09:57,009 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 20:09:57,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:09:57,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1421164510, now seen corresponding path program 5 times [2024-06-27 20:09:57,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:09:57,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574366601] [2024-06-27 20:09:57,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:09:57,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:09:57,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:09:57,525 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 20:09:57,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:09:57,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574366601] [2024-06-27 20:09:57,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574366601] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:09:57,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:09:57,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:09:57,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132009152] [2024-06-27 20:09:57,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:09:57,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:09:57,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:09:57,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:09:57,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:09:57,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:09:57,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 125 transitions, 1311 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 20:09:57,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:09:57,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:09:57,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:09:57,785 INFO L124 PetriNetUnfolderBase]: 437/758 cut-off events. [2024-06-27 20:09:57,786 INFO L125 PetriNetUnfolderBase]: For 31231/31231 co-relation queries the response was YES. [2024-06-27 20:09:57,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5662 conditions, 758 events. 437/758 cut-off events. For 31231/31231 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3300 event pairs, 82 based on Foata normal form. 2/759 useless extension candidates. Maximal degree in co-relation 5593. Up to 502 conditions per place. [2024-06-27 20:09:57,791 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 101 selfloop transitions, 50 changer transitions 0/153 dead transitions. [2024-06-27 20:09:57,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 153 transitions, 2107 flow [2024-06-27 20:09:57,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:09:57,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:09:57,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-27 20:09:57,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3851851851851852 [2024-06-27 20:09:57,792 INFO L175 Difference]: Start difference. First operand has 138 places, 125 transitions, 1311 flow. Second operand 9 states and 104 transitions. [2024-06-27 20:09:57,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 153 transitions, 2107 flow [2024-06-27 20:09:57,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 153 transitions, 2034 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-27 20:09:57,822 INFO L231 Difference]: Finished difference. Result has 145 places, 136 transitions, 1604 flow [2024-06-27 20:09:57,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1252, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1604, PETRI_PLACES=145, PETRI_TRANSITIONS=136} [2024-06-27 20:09:57,822 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 116 predicate places. [2024-06-27 20:09:57,823 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 136 transitions, 1604 flow [2024-06-27 20:09:57,823 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 20:09:57,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:09:57,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:09:57,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 20:09:57,823 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 20:09:57,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:09:57,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1552626700, now seen corresponding path program 6 times [2024-06-27 20:09:57,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:09:57,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387820158] [2024-06-27 20:09:57,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:09:57,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:09:57,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:09:58,359 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 20:09:58,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:09:58,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387820158] [2024-06-27 20:09:58,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387820158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:09:58,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:09:58,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:09:58,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963150737] [2024-06-27 20:09:58,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:09:58,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:09:58,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:09:58,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:09:58,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:09:58,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:09:58,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 136 transitions, 1604 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 20:09:58,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:09:58,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:09:58,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:09:58,623 INFO L124 PetriNetUnfolderBase]: 459/794 cut-off events. [2024-06-27 20:09:58,624 INFO L125 PetriNetUnfolderBase]: For 35970/35970 co-relation queries the response was YES. [2024-06-27 20:09:58,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6284 conditions, 794 events. 459/794 cut-off events. For 35970/35970 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3507 event pairs, 87 based on Foata normal form. 4/797 useless extension candidates. Maximal degree in co-relation 6211. Up to 519 conditions per place. [2024-06-27 20:09:58,629 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 105 selfloop transitions, 52 changer transitions 0/159 dead transitions. [2024-06-27 20:09:58,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 159 transitions, 2327 flow [2024-06-27 20:09:58,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:09:58,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:09:58,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-27 20:09:58,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-27 20:09:58,637 INFO L175 Difference]: Start difference. First operand has 145 places, 136 transitions, 1604 flow. Second operand 9 states and 105 transitions. [2024-06-27 20:09:58,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 159 transitions, 2327 flow [2024-06-27 20:09:58,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 159 transitions, 2234 flow, removed 37 selfloop flow, removed 3 redundant places. [2024-06-27 20:09:58,676 INFO L231 Difference]: Finished difference. Result has 151 places, 141 transitions, 1722 flow [2024-06-27 20:09:58,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1527, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1722, PETRI_PLACES=151, PETRI_TRANSITIONS=141} [2024-06-27 20:09:58,676 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 122 predicate places. [2024-06-27 20:09:58,676 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 141 transitions, 1722 flow [2024-06-27 20:09:58,676 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 20:09:58,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:09:58,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:09:58,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 20:09:58,677 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 20:09:58,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:09:58,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1560900910, now seen corresponding path program 7 times [2024-06-27 20:09:58,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:09:58,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019483327] [2024-06-27 20:09:58,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:09:58,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:09:58,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:09:59,227 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 20:09:59,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:09:59,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019483327] [2024-06-27 20:09:59,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019483327] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:09:59,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:09:59,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:09:59,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578745252] [2024-06-27 20:09:59,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:09:59,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:09:59,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:09:59,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:09:59,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:09:59,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:09:59,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 141 transitions, 1722 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 20:09:59,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:09:59,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:09:59,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:09:59,534 INFO L124 PetriNetUnfolderBase]: 451/782 cut-off events. [2024-06-27 20:09:59,534 INFO L125 PetriNetUnfolderBase]: For 35128/35128 co-relation queries the response was YES. [2024-06-27 20:09:59,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6141 conditions, 782 events. 451/782 cut-off events. For 35128/35128 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3452 event pairs, 104 based on Foata normal form. 4/785 useless extension candidates. Maximal degree in co-relation 6066. Up to 728 conditions per place. [2024-06-27 20:09:59,541 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 132 selfloop transitions, 19 changer transitions 0/153 dead transitions. [2024-06-27 20:09:59,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 153 transitions, 2144 flow [2024-06-27 20:09:59,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:09:59,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:09:59,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-06-27 20:09:59,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34444444444444444 [2024-06-27 20:09:59,543 INFO L175 Difference]: Start difference. First operand has 151 places, 141 transitions, 1722 flow. Second operand 9 states and 93 transitions. [2024-06-27 20:09:59,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 153 transitions, 2144 flow [2024-06-27 20:09:59,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 153 transitions, 1995 flow, removed 34 selfloop flow, removed 5 redundant places. [2024-06-27 20:09:59,591 INFO L231 Difference]: Finished difference. Result has 155 places, 141 transitions, 1617 flow [2024-06-27 20:09:59,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1573, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1617, PETRI_PLACES=155, PETRI_TRANSITIONS=141} [2024-06-27 20:09:59,592 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 126 predicate places. [2024-06-27 20:09:59,592 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 141 transitions, 1617 flow [2024-06-27 20:09:59,592 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 20:09:59,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:09:59,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:09:59,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 20:09:59,592 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 20:09:59,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:09:59,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1324541100, now seen corresponding path program 4 times [2024-06-27 20:09:59,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:09:59,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638987580] [2024-06-27 20:09:59,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:09:59,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:09:59,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:10:00,264 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 20:10:00,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:10:00,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638987580] [2024-06-27 20:10:00,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638987580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:10:00,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:10:00,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:10:00,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111453806] [2024-06-27 20:10:00,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:10:00,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:10:00,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:10:00,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:10:00,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:10:00,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:10:00,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 141 transitions, 1617 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 20:10:00,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:10:00,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:10:00,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:10:00,557 INFO L124 PetriNetUnfolderBase]: 448/778 cut-off events. [2024-06-27 20:10:00,557 INFO L125 PetriNetUnfolderBase]: For 33063/33063 co-relation queries the response was YES. [2024-06-27 20:10:00,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5870 conditions, 778 events. 448/778 cut-off events. For 33063/33063 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3447 event pairs, 74 based on Foata normal form. 2/779 useless extension candidates. Maximal degree in co-relation 5794. Up to 666 conditions per place. [2024-06-27 20:10:00,562 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 113 selfloop transitions, 37 changer transitions 0/152 dead transitions. [2024-06-27 20:10:00,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 152 transitions, 1950 flow [2024-06-27 20:10:00,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:10:00,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:10:00,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-27 20:10:00,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34814814814814815 [2024-06-27 20:10:00,564 INFO L175 Difference]: Start difference. First operand has 155 places, 141 transitions, 1617 flow. Second operand 9 states and 94 transitions. [2024-06-27 20:10:00,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 152 transitions, 1950 flow [2024-06-27 20:10:00,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 152 transitions, 1895 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-27 20:10:00,614 INFO L231 Difference]: Finished difference. Result has 156 places, 141 transitions, 1640 flow [2024-06-27 20:10:00,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1562, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1640, PETRI_PLACES=156, PETRI_TRANSITIONS=141} [2024-06-27 20:10:00,614 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 127 predicate places. [2024-06-27 20:10:00,614 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 141 transitions, 1640 flow [2024-06-27 20:10:00,615 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 20:10:00,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:10:00,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:10:00,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 20:10:00,615 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 20:10:00,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:10:00,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1324719040, now seen corresponding path program 8 times [2024-06-27 20:10:00,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:10:00,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451929136] [2024-06-27 20:10:00,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:10:00,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:10:00,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:10:01,143 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 20:10:01,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:10:01,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451929136] [2024-06-27 20:10:01,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451929136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:10:01,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:10:01,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:10:01,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75675800] [2024-06-27 20:10:01,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:10:01,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:10:01,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:10:01,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:10:01,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:10:01,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:10:01,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 141 transitions, 1640 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 20:10:01,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:10:01,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:10:01,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:10:01,392 INFO L124 PetriNetUnfolderBase]: 464/803 cut-off events. [2024-06-27 20:10:01,392 INFO L125 PetriNetUnfolderBase]: For 36723/36723 co-relation queries the response was YES. [2024-06-27 20:10:01,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6201 conditions, 803 events. 464/803 cut-off events. For 36723/36723 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3575 event pairs, 81 based on Foata normal form. 2/804 useless extension candidates. Maximal degree in co-relation 6124. Up to 711 conditions per place. [2024-06-27 20:10:01,397 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 128 selfloop transitions, 30 changer transitions 0/160 dead transitions. [2024-06-27 20:10:01,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 160 transitions, 2267 flow [2024-06-27 20:10:01,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:10:01,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:10:01,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-27 20:10:01,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-27 20:10:01,400 INFO L175 Difference]: Start difference. First operand has 156 places, 141 transitions, 1640 flow. Second operand 10 states and 105 transitions. [2024-06-27 20:10:01,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 160 transitions, 2267 flow [2024-06-27 20:10:01,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 160 transitions, 2153 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 20:10:01,450 INFO L231 Difference]: Finished difference. Result has 159 places, 146 transitions, 1705 flow [2024-06-27 20:10:01,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1526, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1705, PETRI_PLACES=159, PETRI_TRANSITIONS=146} [2024-06-27 20:10:01,450 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 130 predicate places. [2024-06-27 20:10:01,450 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 146 transitions, 1705 flow [2024-06-27 20:10:01,451 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 20:10:01,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:10:01,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:10:01,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 20:10:01,451 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 20:10:01,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:10:01,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1324725550, now seen corresponding path program 9 times [2024-06-27 20:10:01,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:10:01,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798818065] [2024-06-27 20:10:01,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:10:01,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:10:01,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:10:01,983 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 20:10:01,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:10:01,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798818065] [2024-06-27 20:10:01,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798818065] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:10:01,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:10:01,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:10:01,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908020045] [2024-06-27 20:10:01,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:10:01,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:10:01,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:10:01,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:10:01,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:10:02,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:10:02,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 146 transitions, 1705 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 20:10:02,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:10:02,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:10:02,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:10:02,305 INFO L124 PetriNetUnfolderBase]: 456/791 cut-off events. [2024-06-27 20:10:02,305 INFO L125 PetriNetUnfolderBase]: For 36644/36644 co-relation queries the response was YES. [2024-06-27 20:10:02,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6016 conditions, 791 events. 456/791 cut-off events. For 36644/36644 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3508 event pairs, 79 based on Foata normal form. 4/794 useless extension candidates. Maximal degree in co-relation 5937. Up to 707 conditions per place. [2024-06-27 20:10:02,314 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 128 selfloop transitions, 29 changer transitions 0/159 dead transitions. [2024-06-27 20:10:02,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 159 transitions, 2153 flow [2024-06-27 20:10:02,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:10:02,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:10:02,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-27 20:10:02,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3433333333333333 [2024-06-27 20:10:02,315 INFO L175 Difference]: Start difference. First operand has 159 places, 146 transitions, 1705 flow. Second operand 10 states and 103 transitions. [2024-06-27 20:10:02,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 159 transitions, 2153 flow [2024-06-27 20:10:02,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 159 transitions, 2023 flow, removed 44 selfloop flow, removed 6 redundant places. [2024-06-27 20:10:02,370 INFO L231 Difference]: Finished difference. Result has 163 places, 146 transitions, 1639 flow [2024-06-27 20:10:02,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1575, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1639, PETRI_PLACES=163, PETRI_TRANSITIONS=146} [2024-06-27 20:10:02,370 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 134 predicate places. [2024-06-27 20:10:02,370 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 146 transitions, 1639 flow [2024-06-27 20:10:02,371 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 20:10:02,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:10:02,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:10:02,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 20:10:02,371 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 20:10:02,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:10:02,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1229480982, now seen corresponding path program 10 times [2024-06-27 20:10:02,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:10:02,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38704825] [2024-06-27 20:10:02,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:10:02,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:10:02,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:10:02,867 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 20:10:02,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:10:02,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38704825] [2024-06-27 20:10:02,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38704825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:10:02,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:10:02,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:10:02,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127282395] [2024-06-27 20:10:02,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:10:02,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:10:02,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:10:02,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:10:02,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:10:02,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:10:02,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 146 transitions, 1639 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 20:10:02,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:10:02,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:10:02,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:10:03,144 INFO L124 PetriNetUnfolderBase]: 448/780 cut-off events. [2024-06-27 20:10:03,145 INFO L125 PetriNetUnfolderBase]: For 34702/34702 co-relation queries the response was YES. [2024-06-27 20:10:03,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5677 conditions, 780 events. 448/780 cut-off events. For 34702/34702 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3471 event pairs, 69 based on Foata normal form. 4/783 useless extension candidates. Maximal degree in co-relation 5597. Up to 330 conditions per place. [2024-06-27 20:10:03,150 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 84 selfloop transitions, 81 changer transitions 0/167 dead transitions. [2024-06-27 20:10:03,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 167 transitions, 2297 flow [2024-06-27 20:10:03,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:10:03,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:10:03,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-27 20:10:03,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40370370370370373 [2024-06-27 20:10:03,151 INFO L175 Difference]: Start difference. First operand has 163 places, 146 transitions, 1639 flow. Second operand 9 states and 109 transitions. [2024-06-27 20:10:03,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 167 transitions, 2297 flow [2024-06-27 20:10:03,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 167 transitions, 2240 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-27 20:10:03,201 INFO L231 Difference]: Finished difference. Result has 164 places, 148 transitions, 1791 flow [2024-06-27 20:10:03,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1582, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1791, PETRI_PLACES=164, PETRI_TRANSITIONS=148} [2024-06-27 20:10:03,201 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 135 predicate places. [2024-06-27 20:10:03,201 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 148 transitions, 1791 flow [2024-06-27 20:10:03,201 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 20:10:03,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:10:03,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:10:03,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 20:10:03,202 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 20:10:03,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:10:03,202 INFO L85 PathProgramCache]: Analyzing trace with hash 2104187334, now seen corresponding path program 2 times [2024-06-27 20:10:03,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:10:03,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113465357] [2024-06-27 20:10:03,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:10:03,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:10:03,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:10:03,819 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 20:10:03,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:10:03,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113465357] [2024-06-27 20:10:03,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113465357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:10:03,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:10:03,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:10:03,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613364022] [2024-06-27 20:10:03,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:10:03,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:10:03,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:10:03,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:10:03,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:10:03,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:10:03,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 148 transitions, 1791 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 20:10:03,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:10:03,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:10:03,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:10:04,124 INFO L124 PetriNetUnfolderBase]: 464/806 cut-off events. [2024-06-27 20:10:04,125 INFO L125 PetriNetUnfolderBase]: For 34689/34689 co-relation queries the response was YES. [2024-06-27 20:10:04,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6079 conditions, 806 events. 464/806 cut-off events. For 34689/34689 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3613 event pairs, 74 based on Foata normal form. 1/806 useless extension candidates. Maximal degree in co-relation 5998. Up to 729 conditions per place. [2024-06-27 20:10:04,130 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 141 selfloop transitions, 29 changer transitions 0/172 dead transitions. [2024-06-27 20:10:04,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 172 transitions, 2295 flow [2024-06-27 20:10:04,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:10:04,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:10:04,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-27 20:10:04,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3592592592592593 [2024-06-27 20:10:04,132 INFO L175 Difference]: Start difference. First operand has 164 places, 148 transitions, 1791 flow. Second operand 9 states and 97 transitions. [2024-06-27 20:10:04,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 172 transitions, 2295 flow [2024-06-27 20:10:04,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 172 transitions, 2094 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-27 20:10:04,189 INFO L231 Difference]: Finished difference. Result has 167 places, 156 transitions, 1789 flow [2024-06-27 20:10:04,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1600, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1789, PETRI_PLACES=167, PETRI_TRANSITIONS=156} [2024-06-27 20:10:04,189 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 138 predicate places. [2024-06-27 20:10:04,189 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 156 transitions, 1789 flow [2024-06-27 20:10:04,189 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 20:10:04,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:10:04,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:10:04,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 20:10:04,190 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 20:10:04,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:10:04,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1575320378, now seen corresponding path program 3 times [2024-06-27 20:10:04,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:10:04,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037317485] [2024-06-27 20:10:04,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:10:04,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:10:04,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:10:04,872 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 20:10:04,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:10:04,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037317485] [2024-06-27 20:10:04,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037317485] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:10:04,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:10:04,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:10:04,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819571428] [2024-06-27 20:10:04,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:10:04,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:10:04,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:10:04,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:10:04,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:10:04,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:10:04,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 156 transitions, 1789 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 20:10:04,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:10:04,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:10:04,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:10:05,211 INFO L124 PetriNetUnfolderBase]: 462/803 cut-off events. [2024-06-27 20:10:05,211 INFO L125 PetriNetUnfolderBase]: For 34453/34453 co-relation queries the response was YES. [2024-06-27 20:10:05,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5839 conditions, 803 events. 462/803 cut-off events. For 34453/34453 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3588 event pairs, 74 based on Foata normal form. 1/803 useless extension candidates. Maximal degree in co-relation 5756. Up to 726 conditions per place. [2024-06-27 20:10:05,217 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 143 selfloop transitions, 28 changer transitions 0/173 dead transitions. [2024-06-27 20:10:05,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 173 transitions, 2230 flow [2024-06-27 20:10:05,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:10:05,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:10:05,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-27 20:10:05,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.362962962962963 [2024-06-27 20:10:05,218 INFO L175 Difference]: Start difference. First operand has 167 places, 156 transitions, 1789 flow. Second operand 9 states and 98 transitions. [2024-06-27 20:10:05,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 173 transitions, 2230 flow [2024-06-27 20:10:05,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 173 transitions, 2127 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-27 20:10:05,278 INFO L231 Difference]: Finished difference. Result has 170 places, 158 transitions, 1806 flow [2024-06-27 20:10:05,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1686, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1806, PETRI_PLACES=170, PETRI_TRANSITIONS=158} [2024-06-27 20:10:05,278 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 141 predicate places. [2024-06-27 20:10:05,278 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 158 transitions, 1806 flow [2024-06-27 20:10:05,279 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 20:10:05,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:10:05,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:10:05,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 20:10:05,279 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 20:10:05,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:10:05,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1457054882, now seen corresponding path program 11 times [2024-06-27 20:10:05,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:10:05,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171332005] [2024-06-27 20:10:05,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:10:05,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:10:05,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:10:05,755 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 20:10:05,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:10:05,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171332005] [2024-06-27 20:10:05,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171332005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:10:05,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:10:05,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:10:05,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710351576] [2024-06-27 20:10:05,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:10:05,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:10:05,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:10:05,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:10:05,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:10:05,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:10:05,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 158 transitions, 1806 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 20:10:05,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:10:05,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:10:05,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:10:06,059 INFO L124 PetriNetUnfolderBase]: 468/813 cut-off events. [2024-06-27 20:10:06,059 INFO L125 PetriNetUnfolderBase]: For 36920/36920 co-relation queries the response was YES. [2024-06-27 20:10:06,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5910 conditions, 813 events. 468/813 cut-off events. For 36920/36920 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3652 event pairs, 78 based on Foata normal form. 2/814 useless extension candidates. Maximal degree in co-relation 5827. Up to 730 conditions per place. [2024-06-27 20:10:06,064 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 151 selfloop transitions, 25 changer transitions 0/178 dead transitions. [2024-06-27 20:10:06,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 178 transitions, 2445 flow [2024-06-27 20:10:06,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:10:06,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:10:06,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-27 20:10:06,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36 [2024-06-27 20:10:06,065 INFO L175 Difference]: Start difference. First operand has 170 places, 158 transitions, 1806 flow. Second operand 10 states and 108 transitions. [2024-06-27 20:10:06,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 178 transitions, 2445 flow [2024-06-27 20:10:06,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 178 transitions, 2324 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-27 20:10:06,129 INFO L231 Difference]: Finished difference. Result has 173 places, 160 transitions, 1783 flow [2024-06-27 20:10:06,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1685, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1783, PETRI_PLACES=173, PETRI_TRANSITIONS=160} [2024-06-27 20:10:06,129 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 144 predicate places. [2024-06-27 20:10:06,129 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 160 transitions, 1783 flow [2024-06-27 20:10:06,129 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 20:10:06,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:10:06,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:10:06,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 20:10:06,130 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 20:10:06,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:10:06,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1457048372, now seen corresponding path program 12 times [2024-06-27 20:10:06,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:10:06,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245219533] [2024-06-27 20:10:06,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:10:06,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:10:06,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:10:06,642 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 20:10:06,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:10:06,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245219533] [2024-06-27 20:10:06,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245219533] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:10:06,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:10:06,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:10:06,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234681864] [2024-06-27 20:10:06,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:10:06,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:10:06,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:10:06,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:10:06,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:10:06,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:10:06,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 160 transitions, 1783 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 20:10:06,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:10:06,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:10:06,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:10:06,958 INFO L124 PetriNetUnfolderBase]: 460/801 cut-off events. [2024-06-27 20:10:06,959 INFO L125 PetriNetUnfolderBase]: For 36126/36126 co-relation queries the response was YES. [2024-06-27 20:10:06,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5613 conditions, 801 events. 460/801 cut-off events. For 36126/36126 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3613 event pairs, 76 based on Foata normal form. 4/804 useless extension candidates. Maximal degree in co-relation 5531. Up to 726 conditions per place. [2024-06-27 20:10:06,964 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 151 selfloop transitions, 24 changer transitions 0/177 dead transitions. [2024-06-27 20:10:06,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 177 transitions, 2289 flow [2024-06-27 20:10:06,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:10:06,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:10:06,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-27 20:10:06,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35333333333333333 [2024-06-27 20:10:06,966 INFO L175 Difference]: Start difference. First operand has 173 places, 160 transitions, 1783 flow. Second operand 10 states and 106 transitions. [2024-06-27 20:10:06,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 177 transitions, 2289 flow [2024-06-27 20:10:07,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 177 transitions, 2101 flow, removed 40 selfloop flow, removed 11 redundant places. [2024-06-27 20:10:07,036 INFO L231 Difference]: Finished difference. Result has 172 places, 160 transitions, 1649 flow [2024-06-27 20:10:07,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1595, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1649, PETRI_PLACES=172, PETRI_TRANSITIONS=160} [2024-06-27 20:10:07,036 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 143 predicate places. [2024-06-27 20:10:07,037 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 160 transitions, 1649 flow [2024-06-27 20:10:07,037 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 20:10:07,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:10:07,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:10:07,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 20:10:07,037 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 20:10:07,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:10:07,037 INFO L85 PathProgramCache]: Analyzing trace with hash 333171802, now seen corresponding path program 1 times [2024-06-27 20:10:07,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:10:07,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995140722] [2024-06-27 20:10:07,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:10:07,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:10:07,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:10:07,793 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 20:10:07,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:10:07,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995140722] [2024-06-27 20:10:07,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995140722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:10:07,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:10:07,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:10:07,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806945261] [2024-06-27 20:10:07,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:10:07,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:10:07,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:10:07,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:10:07,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:10:07,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:10:07,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 160 transitions, 1649 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 20:10:07,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:10:07,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:10:07,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:10:08,159 INFO L124 PetriNetUnfolderBase]: 473/828 cut-off events. [2024-06-27 20:10:08,160 INFO L125 PetriNetUnfolderBase]: For 35199/35199 co-relation queries the response was YES. [2024-06-27 20:10:08,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5579 conditions, 828 events. 473/828 cut-off events. For 35199/35199 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3812 event pairs, 75 based on Foata normal form. 2/829 useless extension candidates. Maximal degree in co-relation 5499. Up to 745 conditions per place. [2024-06-27 20:10:08,166 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 154 selfloop transitions, 23 changer transitions 0/179 dead transitions. [2024-06-27 20:10:08,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 179 transitions, 2083 flow [2024-06-27 20:10:08,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:10:08,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:10:08,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-27 20:10:08,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34 [2024-06-27 20:10:08,167 INFO L175 Difference]: Start difference. First operand has 172 places, 160 transitions, 1649 flow. Second operand 10 states and 102 transitions. [2024-06-27 20:10:08,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 179 transitions, 2083 flow [2024-06-27 20:10:08,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 179 transitions, 2039 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 20:10:08,232 INFO L231 Difference]: Finished difference. Result has 177 places, 163 transitions, 1695 flow [2024-06-27 20:10:08,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1605, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1695, PETRI_PLACES=177, PETRI_TRANSITIONS=163} [2024-06-27 20:10:08,232 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 148 predicate places. [2024-06-27 20:10:08,233 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 163 transitions, 1695 flow [2024-06-27 20:10:08,233 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 20:10:08,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:10:08,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:10:08,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 20:10:08,233 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 20:10:08,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:10:08,233 INFO L85 PathProgramCache]: Analyzing trace with hash 418162642, now seen corresponding path program 2 times [2024-06-27 20:10:08,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:10:08,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389913768] [2024-06-27 20:10:08,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:10:08,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:10:08,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:10:09,025 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 20:10:09,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:10:09,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389913768] [2024-06-27 20:10:09,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389913768] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:10:09,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:10:09,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:10:09,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451521841] [2024-06-27 20:10:09,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:10:09,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:10:09,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:10:09,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:10:09,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:10:09,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:10:09,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 163 transitions, 1695 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 20:10:09,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:10:09,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:10:09,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:10:09,455 INFO L124 PetriNetUnfolderBase]: 481/844 cut-off events. [2024-06-27 20:10:09,455 INFO L125 PetriNetUnfolderBase]: For 36472/36472 co-relation queries the response was YES. [2024-06-27 20:10:09,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5701 conditions, 844 events. 481/844 cut-off events. For 36472/36472 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3934 event pairs, 75 based on Foata normal form. 2/845 useless extension candidates. Maximal degree in co-relation 5619. Up to 762 conditions per place. [2024-06-27 20:10:09,461 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 152 selfloop transitions, 26 changer transitions 0/180 dead transitions. [2024-06-27 20:10:09,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 180 transitions, 2126 flow [2024-06-27 20:10:09,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:10:09,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:10:09,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-27 20:10:09,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34 [2024-06-27 20:10:09,462 INFO L175 Difference]: Start difference. First operand has 177 places, 163 transitions, 1695 flow. Second operand 10 states and 102 transitions. [2024-06-27 20:10:09,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 180 transitions, 2126 flow [2024-06-27 20:10:09,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 180 transitions, 2066 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-27 20:10:09,533 INFO L231 Difference]: Finished difference. Result has 182 places, 165 transitions, 1725 flow [2024-06-27 20:10:09,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1635, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1725, PETRI_PLACES=182, PETRI_TRANSITIONS=165} [2024-06-27 20:10:09,533 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 153 predicate places. [2024-06-27 20:10:09,533 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 165 transitions, 1725 flow [2024-06-27 20:10:09,533 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 20:10:09,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:10:09,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:10:09,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 20:10:09,534 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 20:10:09,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:10:09,534 INFO L85 PathProgramCache]: Analyzing trace with hash 335049627, now seen corresponding path program 1 times [2024-06-27 20:10:09,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:10:09,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304766249] [2024-06-27 20:10:09,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:10:09,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:10:09,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:10:10,186 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 20:10:10,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:10:10,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304766249] [2024-06-27 20:10:10,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304766249] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:10:10,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:10:10,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:10:10,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344669219] [2024-06-27 20:10:10,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:10:10,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:10:10,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:10:10,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:10:10,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:10:10,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:10:10,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 165 transitions, 1725 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 20:10:10,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:10:10,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:10:10,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:10:10,505 INFO L124 PetriNetUnfolderBase]: 479/841 cut-off events. [2024-06-27 20:10:10,505 INFO L125 PetriNetUnfolderBase]: For 36199/36199 co-relation queries the response was YES. [2024-06-27 20:10:10,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5647 conditions, 841 events. 479/841 cut-off events. For 36199/36199 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3900 event pairs, 72 based on Foata normal form. 1/841 useless extension candidates. Maximal degree in co-relation 5563. Up to 701 conditions per place. [2024-06-27 20:10:10,510 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 132 selfloop transitions, 48 changer transitions 0/182 dead transitions. [2024-06-27 20:10:10,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 182 transitions, 2183 flow [2024-06-27 20:10:10,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:10:10,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:10:10,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-27 20:10:10,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35555555555555557 [2024-06-27 20:10:10,511 INFO L175 Difference]: Start difference. First operand has 182 places, 165 transitions, 1725 flow. Second operand 9 states and 96 transitions. [2024-06-27 20:10:10,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 182 transitions, 2183 flow [2024-06-27 20:10:10,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 182 transitions, 2114 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 20:10:10,593 INFO L231 Difference]: Finished difference. Result has 184 places, 167 transitions, 1824 flow [2024-06-27 20:10:10,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1656, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1824, PETRI_PLACES=184, PETRI_TRANSITIONS=167} [2024-06-27 20:10:10,593 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 155 predicate places. [2024-06-27 20:10:10,593 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 167 transitions, 1824 flow [2024-06-27 20:10:10,593 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 20:10:10,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:10:10,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:10:10,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 20:10:10,593 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 20:10:10,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:10:10,594 INFO L85 PathProgramCache]: Analyzing trace with hash 335049472, now seen corresponding path program 3 times [2024-06-27 20:10:10,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:10:10,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952446768] [2024-06-27 20:10:10,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:10:10,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:10:10,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:10:11,374 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 20:10:11,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:10:11,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952446768] [2024-06-27 20:10:11,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952446768] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:10:11,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:10:11,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:10:11,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504117187] [2024-06-27 20:10:11,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:10:11,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:10:11,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:10:11,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:10:11,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:10:11,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:10:11,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 167 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 20:10:11,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:10:11,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:10:11,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:10:11,741 INFO L124 PetriNetUnfolderBase]: 483/849 cut-off events. [2024-06-27 20:10:11,741 INFO L125 PetriNetUnfolderBase]: For 38965/38965 co-relation queries the response was YES. [2024-06-27 20:10:11,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5792 conditions, 849 events. 483/849 cut-off events. For 38965/38965 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3970 event pairs, 72 based on Foata normal form. 2/850 useless extension candidates. Maximal degree in co-relation 5707. Up to 716 conditions per place. [2024-06-27 20:10:11,747 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 136 selfloop transitions, 45 changer transitions 0/183 dead transitions. [2024-06-27 20:10:11,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 183 transitions, 2252 flow [2024-06-27 20:10:11,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:10:11,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:10:11,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-27 20:10:11,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35185185185185186 [2024-06-27 20:10:11,748 INFO L175 Difference]: Start difference. First operand has 184 places, 167 transitions, 1824 flow. Second operand 9 states and 95 transitions. [2024-06-27 20:10:11,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 183 transitions, 2252 flow [2024-06-27 20:10:11,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 183 transitions, 2120 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-27 20:10:11,825 INFO L231 Difference]: Finished difference. Result has 186 places, 168 transitions, 1819 flow [2024-06-27 20:10:11,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1692, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1819, PETRI_PLACES=186, PETRI_TRANSITIONS=168} [2024-06-27 20:10:11,826 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 157 predicate places. [2024-06-27 20:10:11,826 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 168 transitions, 1819 flow [2024-06-27 20:10:11,826 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 20:10:11,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:10:11,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:10:11,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 20:10:11,826 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 20:10:11,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:10:11,827 INFO L85 PathProgramCache]: Analyzing trace with hash 421891384, now seen corresponding path program 1 times [2024-06-27 20:10:11,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:10:11,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970794805] [2024-06-27 20:10:11,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:10:11,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:10:11,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:10:12,609 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 20:10:12,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:10:12,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970794805] [2024-06-27 20:10:12,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970794805] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:10:12,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:10:12,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:10:12,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41625260] [2024-06-27 20:10:12,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:10:12,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:10:12,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:10:12,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:10:12,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:10:12,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:10:12,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 168 transitions, 1819 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 20:10:12,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:10:12,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:10:12,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:10:12,964 INFO L124 PetriNetUnfolderBase]: 489/859 cut-off events. [2024-06-27 20:10:12,965 INFO L125 PetriNetUnfolderBase]: For 40760/40760 co-relation queries the response was YES. [2024-06-27 20:10:12,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5877 conditions, 859 events. 489/859 cut-off events. For 40760/40760 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4009 event pairs, 66 based on Foata normal form. 2/860 useless extension candidates. Maximal degree in co-relation 5791. Up to 736 conditions per place. [2024-06-27 20:10:12,970 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 148 selfloop transitions, 38 changer transitions 0/188 dead transitions. [2024-06-27 20:10:12,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 188 transitions, 2298 flow [2024-06-27 20:10:12,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:10:12,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:10:12,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-27 20:10:12,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-27 20:10:12,971 INFO L175 Difference]: Start difference. First operand has 186 places, 168 transitions, 1819 flow. Second operand 10 states and 105 transitions. [2024-06-27 20:10:12,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 188 transitions, 2298 flow [2024-06-27 20:10:13,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 188 transitions, 2191 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 20:10:13,054 INFO L231 Difference]: Finished difference. Result has 189 places, 170 transitions, 1847 flow [2024-06-27 20:10:13,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1712, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1847, PETRI_PLACES=189, PETRI_TRANSITIONS=170} [2024-06-27 20:10:13,054 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 160 predicate places. [2024-06-27 20:10:13,054 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 170 transitions, 1847 flow [2024-06-27 20:10:13,054 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 20:10:13,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:10:13,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:10:13,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 20:10:13,055 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 20:10:13,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:10:13,055 INFO L85 PathProgramCache]: Analyzing trace with hash -293693214, now seen corresponding path program 4 times [2024-06-27 20:10:13,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:10:13,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11161454] [2024-06-27 20:10:13,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:10:13,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:10:13,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:10:13,757 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 20:10:13,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:10:13,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11161454] [2024-06-27 20:10:13,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11161454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:10:13,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:10:13,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:10:13,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262409703] [2024-06-27 20:10:13,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:10:13,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:10:13,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:10:13,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:10:13,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:10:13,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:10:13,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 170 transitions, 1847 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 20:10:13,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:10:13,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:10:13,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:10:14,046 INFO L124 PetriNetUnfolderBase]: 493/867 cut-off events. [2024-06-27 20:10:14,047 INFO L125 PetriNetUnfolderBase]: For 42358/42358 co-relation queries the response was YES. [2024-06-27 20:10:14,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5948 conditions, 867 events. 493/867 cut-off events. For 42358/42358 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4086 event pairs, 87 based on Foata normal form. 2/868 useless extension candidates. Maximal degree in co-relation 5861. Up to 813 conditions per place. [2024-06-27 20:10:14,054 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 158 selfloop transitions, 23 changer transitions 0/183 dead transitions. [2024-06-27 20:10:14,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 183 transitions, 2267 flow [2024-06-27 20:10:14,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:10:14,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:10:14,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-06-27 20:10:14,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-27 20:10:14,055 INFO L175 Difference]: Start difference. First operand has 189 places, 170 transitions, 1847 flow. Second operand 9 states and 90 transitions. [2024-06-27 20:10:14,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 183 transitions, 2267 flow [2024-06-27 20:10:14,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 183 transitions, 2152 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-27 20:10:14,144 INFO L231 Difference]: Finished difference. Result has 190 places, 171 transitions, 1813 flow [2024-06-27 20:10:14,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1732, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1813, PETRI_PLACES=190, PETRI_TRANSITIONS=171} [2024-06-27 20:10:14,144 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 161 predicate places. [2024-06-27 20:10:14,144 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 171 transitions, 1813 flow [2024-06-27 20:10:14,144 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 20:10:14,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:10:14,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:10:14,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 20:10:14,145 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 20:10:14,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:10:14,145 INFO L85 PathProgramCache]: Analyzing trace with hash -293687262, now seen corresponding path program 2 times [2024-06-27 20:10:14,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:10:14,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851397433] [2024-06-27 20:10:14,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:10:14,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:10:14,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:10:14,785 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 20:10:14,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:10:14,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851397433] [2024-06-27 20:10:14,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851397433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:10:14,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:10:14,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:10:14,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222585564] [2024-06-27 20:10:14,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:10:14,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:10:14,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:10:14,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:10:14,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:10:14,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:10:14,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 171 transitions, 1813 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 20:10:14,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:10:14,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:10:14,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:10:15,100 INFO L124 PetriNetUnfolderBase]: 505/887 cut-off events. [2024-06-27 20:10:15,101 INFO L125 PetriNetUnfolderBase]: For 46535/46535 co-relation queries the response was YES. [2024-06-27 20:10:15,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6035 conditions, 887 events. 505/887 cut-off events. For 46535/46535 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4185 event pairs, 81 based on Foata normal form. 4/890 useless extension candidates. Maximal degree in co-relation 5947. Up to 751 conditions per place. [2024-06-27 20:10:15,106 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 148 selfloop transitions, 42 changer transitions 0/192 dead transitions. [2024-06-27 20:10:15,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 192 transitions, 2447 flow [2024-06-27 20:10:15,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:10:15,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:10:15,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-27 20:10:15,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3566666666666667 [2024-06-27 20:10:15,107 INFO L175 Difference]: Start difference. First operand has 190 places, 171 transitions, 1813 flow. Second operand 10 states and 107 transitions. [2024-06-27 20:10:15,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 192 transitions, 2447 flow [2024-06-27 20:10:15,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 192 transitions, 2378 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-27 20:10:15,195 INFO L231 Difference]: Finished difference. Result has 193 places, 175 transitions, 1918 flow [2024-06-27 20:10:15,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1744, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1918, PETRI_PLACES=193, PETRI_TRANSITIONS=175} [2024-06-27 20:10:15,196 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 164 predicate places. [2024-06-27 20:10:15,196 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 175 transitions, 1918 flow [2024-06-27 20:10:15,196 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 20:10:15,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:10:15,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:10:15,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 20:10:15,196 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 20:10:15,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:10:15,197 INFO L85 PathProgramCache]: Analyzing trace with hash -299199744, now seen corresponding path program 5 times [2024-06-27 20:10:15,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:10:15,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251179084] [2024-06-27 20:10:15,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:10:15,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:10:15,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:10:15,946 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 20:10:15,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:10:15,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251179084] [2024-06-27 20:10:15,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251179084] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:10:15,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:10:15,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:10:15,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062529864] [2024-06-27 20:10:15,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:10:15,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:10:15,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:10:15,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:10:15,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:10:16,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:10:16,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 175 transitions, 1918 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 20:10:16,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:10:16,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:10:16,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:10:16,301 INFO L124 PetriNetUnfolderBase]: 521/915 cut-off events. [2024-06-27 20:10:16,301 INFO L125 PetriNetUnfolderBase]: For 45594/45594 co-relation queries the response was YES. [2024-06-27 20:10:16,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6252 conditions, 915 events. 521/915 cut-off events. For 45594/45594 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4377 event pairs, 79 based on Foata normal form. 2/916 useless extension candidates. Maximal degree in co-relation 6163. Up to 826 conditions per place. [2024-06-27 20:10:16,308 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 163 selfloop transitions, 30 changer transitions 0/195 dead transitions. [2024-06-27 20:10:16,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 195 transitions, 2411 flow [2024-06-27 20:10:16,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:10:16,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:10:16,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-27 20:10:16,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-27 20:10:16,308 INFO L175 Difference]: Start difference. First operand has 193 places, 175 transitions, 1918 flow. Second operand 10 states and 105 transitions. [2024-06-27 20:10:16,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 195 transitions, 2411 flow [2024-06-27 20:10:16,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 195 transitions, 2299 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-27 20:10:16,414 INFO L231 Difference]: Finished difference. Result has 198 places, 180 transitions, 1943 flow [2024-06-27 20:10:16,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1806, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1943, PETRI_PLACES=198, PETRI_TRANSITIONS=180} [2024-06-27 20:10:16,415 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 169 predicate places. [2024-06-27 20:10:16,415 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 180 transitions, 1943 flow [2024-06-27 20:10:16,415 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 20:10:16,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:10:16,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:10:16,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 20:10:16,415 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 20:10:16,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:10:16,416 INFO L85 PathProgramCache]: Analyzing trace with hash -293477733, now seen corresponding path program 1 times [2024-06-27 20:10:16,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:10:16,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438163016] [2024-06-27 20:10:16,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:10:16,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:10:16,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:10:17,081 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 20:10:17,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:10:17,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438163016] [2024-06-27 20:10:17,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438163016] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:10:17,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:10:17,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:10:17,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338391011] [2024-06-27 20:10:17,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:10:17,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:10:17,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:10:17,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:10:17,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:10:17,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:10:17,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 180 transitions, 1943 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 20:10:17,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:10:17,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:10:17,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:10:17,437 INFO L124 PetriNetUnfolderBase]: 525/923 cut-off events. [2024-06-27 20:10:17,437 INFO L125 PetriNetUnfolderBase]: For 47184/47184 co-relation queries the response was YES. [2024-06-27 20:10:17,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6266 conditions, 923 events. 525/923 cut-off events. For 47184/47184 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4437 event pairs, 92 based on Foata normal form. 2/924 useless extension candidates. Maximal degree in co-relation 6174. Up to 883 conditions per place. [2024-06-27 20:10:17,445 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 172 selfloop transitions, 18 changer transitions 0/192 dead transitions. [2024-06-27 20:10:17,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 192 transitions, 2387 flow [2024-06-27 20:10:17,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:10:17,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:10:17,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 96 transitions. [2024-06-27 20:10:17,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32 [2024-06-27 20:10:17,446 INFO L175 Difference]: Start difference. First operand has 198 places, 180 transitions, 1943 flow. Second operand 10 states and 96 transitions. [2024-06-27 20:10:17,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 192 transitions, 2387 flow [2024-06-27 20:10:17,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 192 transitions, 2307 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-27 20:10:17,567 INFO L231 Difference]: Finished difference. Result has 202 places, 181 transitions, 1921 flow [2024-06-27 20:10:17,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1863, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1921, PETRI_PLACES=202, PETRI_TRANSITIONS=181} [2024-06-27 20:10:17,567 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 173 predicate places. [2024-06-27 20:10:17,567 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 181 transitions, 1921 flow [2024-06-27 20:10:17,568 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 20:10:17,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:10:17,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:10:17,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 20:10:17,568 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 20:10:17,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:10:17,569 INFO L85 PathProgramCache]: Analyzing trace with hash 401809568, now seen corresponding path program 3 times [2024-06-27 20:10:17,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:10:17,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252293470] [2024-06-27 20:10:17,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:10:17,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:10:17,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:10:18,212 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 20:10:18,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:10:18,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252293470] [2024-06-27 20:10:18,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252293470] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:10:18,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:10:18,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:10:18,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470868797] [2024-06-27 20:10:18,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:10:18,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:10:18,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:10:18,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:10:18,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:10:18,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:10:18,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 181 transitions, 1921 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 20:10:18,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:10:18,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:10:18,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:10:18,525 INFO L124 PetriNetUnfolderBase]: 517/911 cut-off events. [2024-06-27 20:10:18,525 INFO L125 PetriNetUnfolderBase]: For 45196/45196 co-relation queries the response was YES. [2024-06-27 20:10:18,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5931 conditions, 911 events. 517/911 cut-off events. For 45196/45196 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4388 event pairs, 85 based on Foata normal form. 4/914 useless extension candidates. Maximal degree in co-relation 5838. Up to 781 conditions per place. [2024-06-27 20:10:18,530 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 155 selfloop transitions, 40 changer transitions 0/197 dead transitions. [2024-06-27 20:10:18,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 197 transitions, 2377 flow [2024-06-27 20:10:18,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:10:18,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:10:18,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-27 20:10:18,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-27 20:10:18,531 INFO L175 Difference]: Start difference. First operand has 202 places, 181 transitions, 1921 flow. Second operand 10 states and 105 transitions. [2024-06-27 20:10:18,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 197 transitions, 2377 flow [2024-06-27 20:10:18,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 197 transitions, 2299 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-27 20:10:18,632 INFO L231 Difference]: Finished difference. Result has 206 places, 181 transitions, 1931 flow [2024-06-27 20:10:18,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1843, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1931, PETRI_PLACES=206, PETRI_TRANSITIONS=181} [2024-06-27 20:10:18,633 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 177 predicate places. [2024-06-27 20:10:18,633 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 181 transitions, 1931 flow [2024-06-27 20:10:18,633 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 20:10:18,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:10:18,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:10:18,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 20:10:18,633 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 20:10:18,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:10:18,634 INFO L85 PathProgramCache]: Analyzing trace with hash -299203464, now seen corresponding path program 6 times [2024-06-27 20:10:18,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:10:18,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035384644] [2024-06-27 20:10:18,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:10:18,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:10:18,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:10:19,400 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 20:10:19,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:10:19,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035384644] [2024-06-27 20:10:19,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035384644] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:10:19,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:10:19,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:10:19,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473375534] [2024-06-27 20:10:19,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:10:19,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:10:19,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:10:19,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:10:19,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:10:19,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:10:19,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 181 transitions, 1931 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 20:10:19,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:10:19,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:10:19,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:10:19,743 INFO L124 PetriNetUnfolderBase]: 521/919 cut-off events. [2024-06-27 20:10:19,744 INFO L125 PetriNetUnfolderBase]: For 44041/44041 co-relation queries the response was YES. [2024-06-27 20:10:19,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6052 conditions, 919 events. 521/919 cut-off events. For 44041/44041 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4422 event pairs, 69 based on Foata normal form. 2/920 useless extension candidates. Maximal degree in co-relation 5958. Up to 801 conditions per place. [2024-06-27 20:10:19,750 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 155 selfloop transitions, 39 changer transitions 0/196 dead transitions. [2024-06-27 20:10:19,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 196 transitions, 2387 flow [2024-06-27 20:10:19,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:10:19,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:10:19,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-27 20:10:19,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34814814814814815 [2024-06-27 20:10:19,751 INFO L175 Difference]: Start difference. First operand has 206 places, 181 transitions, 1931 flow. Second operand 9 states and 94 transitions. [2024-06-27 20:10:19,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 196 transitions, 2387 flow [2024-06-27 20:10:19,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 196 transitions, 2287 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-27 20:10:19,852 INFO L231 Difference]: Finished difference. Result has 206 places, 182 transitions, 1947 flow [2024-06-27 20:10:19,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1831, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1947, PETRI_PLACES=206, PETRI_TRANSITIONS=182} [2024-06-27 20:10:19,853 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 177 predicate places. [2024-06-27 20:10:19,853 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 182 transitions, 1947 flow [2024-06-27 20:10:19,853 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 20:10:19,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:10:19,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:10:19,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 20:10:19,853 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 20:10:19,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:10:19,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1747366390, now seen corresponding path program 4 times [2024-06-27 20:10:19,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:10:19,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733247538] [2024-06-27 20:10:19,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:10:19,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:10:19,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:10:20,434 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 20:10:20,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:10:20,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733247538] [2024-06-27 20:10:20,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733247538] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:10:20,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:10:20,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:10:20,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184581505] [2024-06-27 20:10:20,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:10:20,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:10:20,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:10:20,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:10:20,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:10:20,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:10:20,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 182 transitions, 1947 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 20:10:20,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:10:20,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:10:20,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:10:20,764 INFO L124 PetriNetUnfolderBase]: 522/921 cut-off events. [2024-06-27 20:10:20,765 INFO L125 PetriNetUnfolderBase]: For 44353/44353 co-relation queries the response was YES. [2024-06-27 20:10:20,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6037 conditions, 921 events. 522/921 cut-off events. For 44353/44353 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4446 event pairs, 72 based on Foata normal form. 2/922 useless extension candidates. Maximal degree in co-relation 5942. Up to 613 conditions per place. [2024-06-27 20:10:20,772 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 124 selfloop transitions, 74 changer transitions 0/200 dead transitions. [2024-06-27 20:10:20,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 200 transitions, 2577 flow [2024-06-27 20:10:20,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:10:20,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:10:20,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-27 20:10:20,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3851851851851852 [2024-06-27 20:10:20,772 INFO L175 Difference]: Start difference. First operand has 206 places, 182 transitions, 1947 flow. Second operand 9 states and 104 transitions. [2024-06-27 20:10:20,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 200 transitions, 2577 flow [2024-06-27 20:10:20,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 200 transitions, 2471 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-27 20:10:20,870 INFO L231 Difference]: Finished difference. Result has 208 places, 184 transitions, 2050 flow [2024-06-27 20:10:20,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1841, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2050, PETRI_PLACES=208, PETRI_TRANSITIONS=184} [2024-06-27 20:10:20,871 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 179 predicate places. [2024-06-27 20:10:20,871 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 184 transitions, 2050 flow [2024-06-27 20:10:20,871 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 20:10:20,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:10:20,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:10:20,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 20:10:20,872 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 20:10:20,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:10:20,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1106431808, now seen corresponding path program 7 times [2024-06-27 20:10:20,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:10:20,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226908227] [2024-06-27 20:10:20,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:10:20,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:10:20,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:10:21,626 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 20:10:21,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:10:21,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226908227] [2024-06-27 20:10:21,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226908227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:10:21,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:10:21,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:10:21,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753953407] [2024-06-27 20:10:21,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:10:21,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:10:21,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:10:21,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:10:21,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:10:21,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:10:21,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 184 transitions, 2050 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 20:10:21,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:10:21,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:10:21,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:10:21,957 INFO L124 PetriNetUnfolderBase]: 526/930 cut-off events. [2024-06-27 20:10:21,957 INFO L125 PetriNetUnfolderBase]: For 46196/46196 co-relation queries the response was YES. [2024-06-27 20:10:21,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6192 conditions, 930 events. 526/930 cut-off events. For 46196/46196 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4525 event pairs, 86 based on Foata normal form. 2/931 useless extension candidates. Maximal degree in co-relation 6096. Up to 850 conditions per place. [2024-06-27 20:10:21,964 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 163 selfloop transitions, 31 changer transitions 0/196 dead transitions. [2024-06-27 20:10:21,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 196 transitions, 2500 flow [2024-06-27 20:10:21,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:10:21,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:10:21,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 92 transitions. [2024-06-27 20:10:21,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34074074074074073 [2024-06-27 20:10:21,965 INFO L175 Difference]: Start difference. First operand has 208 places, 184 transitions, 2050 flow. Second operand 9 states and 92 transitions. [2024-06-27 20:10:21,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 196 transitions, 2500 flow [2024-06-27 20:10:22,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 196 transitions, 2357 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-27 20:10:22,071 INFO L231 Difference]: Finished difference. Result has 211 places, 185 transitions, 2009 flow [2024-06-27 20:10:22,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1907, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2009, PETRI_PLACES=211, PETRI_TRANSITIONS=185} [2024-06-27 20:10:22,071 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 182 predicate places. [2024-06-27 20:10:22,071 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 185 transitions, 2009 flow [2024-06-27 20:10:22,072 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 20:10:22,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:10:22,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:10:22,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 20:10:22,072 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 20:10:22,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:10:22,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1106425856, now seen corresponding path program 5 times [2024-06-27 20:10:22,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:10:22,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719964573] [2024-06-27 20:10:22,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:10:22,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:10:22,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:10:22,718 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 20:10:22,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:10:22,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719964573] [2024-06-27 20:10:22,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719964573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:10:22,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:10:22,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:10:22,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713361558] [2024-06-27 20:10:22,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:10:22,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:10:22,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:10:22,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:10:22,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:10:22,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:10:22,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 185 transitions, 2009 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 20:10:22,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:10:22,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:10:22,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:10:23,006 INFO L124 PetriNetUnfolderBase]: 532/940 cut-off events. [2024-06-27 20:10:23,006 INFO L125 PetriNetUnfolderBase]: For 47195/47195 co-relation queries the response was YES. [2024-06-27 20:10:23,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6146 conditions, 940 events. 532/940 cut-off events. For 47195/47195 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4580 event pairs, 86 based on Foata normal form. 2/941 useless extension candidates. Maximal degree in co-relation 6049. Up to 659 conditions per place. [2024-06-27 20:10:23,013 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 138 selfloop transitions, 65 changer transitions 0/205 dead transitions. [2024-06-27 20:10:23,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 205 transitions, 2777 flow [2024-06-27 20:10:23,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:10:23,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:10:23,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-27 20:10:23,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37333333333333335 [2024-06-27 20:10:23,014 INFO L175 Difference]: Start difference. First operand has 211 places, 185 transitions, 2009 flow. Second operand 10 states and 112 transitions. [2024-06-27 20:10:23,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 205 transitions, 2777 flow [2024-06-27 20:10:23,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 205 transitions, 2685 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-27 20:10:23,116 INFO L231 Difference]: Finished difference. Result has 214 places, 187 transitions, 2086 flow [2024-06-27 20:10:23,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1917, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2086, PETRI_PLACES=214, PETRI_TRANSITIONS=187} [2024-06-27 20:10:23,117 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 185 predicate places. [2024-06-27 20:10:23,117 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 187 transitions, 2086 flow [2024-06-27 20:10:23,117 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 20:10:23,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:10:23,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:10:23,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 20:10:23,117 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 20:10:23,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:10:23,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1143288948, now seen corresponding path program 6 times [2024-06-27 20:10:23,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:10:23,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915666013] [2024-06-27 20:10:23,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:10:23,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:10:23,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:10:23,813 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 20:10:23,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:10:23,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915666013] [2024-06-27 20:10:23,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915666013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:10:23,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:10:23,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:10:23,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745477506] [2024-06-27 20:10:23,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:10:23,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:10:23,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:10:23,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:10:23,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:10:23,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:10:23,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 187 transitions, 2086 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 20:10:23,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:10:23,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:10:23,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:10:24,152 INFO L124 PetriNetUnfolderBase]: 528/933 cut-off events. [2024-06-27 20:10:24,152 INFO L125 PetriNetUnfolderBase]: For 44719/44719 co-relation queries the response was YES. [2024-06-27 20:10:24,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6074 conditions, 933 events. 528/933 cut-off events. For 44719/44719 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4549 event pairs, 128 based on Foata normal form. 2/934 useless extension candidates. Maximal degree in co-relation 5976. Up to 882 conditions per place. [2024-06-27 20:10:24,160 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 178 selfloop transitions, 19 changer transitions 0/199 dead transitions. [2024-06-27 20:10:24,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 199 transitions, 2532 flow [2024-06-27 20:10:24,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:10:24,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:10:24,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 99 transitions. [2024-06-27 20:10:24,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33 [2024-06-27 20:10:24,161 INFO L175 Difference]: Start difference. First operand has 214 places, 187 transitions, 2086 flow. Second operand 10 states and 99 transitions. [2024-06-27 20:10:24,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 199 transitions, 2532 flow [2024-06-27 20:10:24,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 199 transitions, 2358 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-27 20:10:24,267 INFO L231 Difference]: Finished difference. Result has 216 places, 187 transitions, 1955 flow [2024-06-27 20:10:24,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1912, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1955, PETRI_PLACES=216, PETRI_TRANSITIONS=187} [2024-06-27 20:10:24,267 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 187 predicate places. [2024-06-27 20:10:24,267 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 187 transitions, 1955 flow [2024-06-27 20:10:24,268 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 20:10:24,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:10:24,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:10:24,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 20:10:24,268 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 20:10:24,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:10:24,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1143296667, now seen corresponding path program 2 times [2024-06-27 20:10:24,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:10:24,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791465699] [2024-06-27 20:10:24,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:10:24,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:10:24,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:10:25,144 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 20:10:25,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:10:25,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791465699] [2024-06-27 20:10:25,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791465699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:10:25,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:10:25,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:10:25,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319657293] [2024-06-27 20:10:25,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:10:25,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:10:25,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:10:25,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:10:25,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:10:25,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:10:25,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 187 transitions, 1955 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 20:10:25,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:10:25,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:10:25,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:10:25,489 INFO L124 PetriNetUnfolderBase]: 535/946 cut-off events. [2024-06-27 20:10:25,489 INFO L125 PetriNetUnfolderBase]: For 45784/45784 co-relation queries the response was YES. [2024-06-27 20:10:25,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5985 conditions, 946 events. 535/946 cut-off events. For 45784/45784 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4635 event pairs, 130 based on Foata normal form. 2/947 useless extension candidates. Maximal degree in co-relation 5886. Up to 914 conditions per place. [2024-06-27 20:10:25,497 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 184 selfloop transitions, 16 changer transitions 0/202 dead transitions. [2024-06-27 20:10:25,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 202 transitions, 2453 flow [2024-06-27 20:10:25,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:10:25,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:10:25,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 94 transitions. [2024-06-27 20:10:25,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31333333333333335 [2024-06-27 20:10:25,498 INFO L175 Difference]: Start difference. First operand has 216 places, 187 transitions, 1955 flow. Second operand 10 states and 94 transitions. [2024-06-27 20:10:25,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 202 transitions, 2453 flow [2024-06-27 20:10:25,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 202 transitions, 2398 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-27 20:10:25,613 INFO L231 Difference]: Finished difference. Result has 219 places, 192 transitions, 2026 flow [2024-06-27 20:10:25,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1909, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2026, PETRI_PLACES=219, PETRI_TRANSITIONS=192} [2024-06-27 20:10:25,614 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 190 predicate places. [2024-06-27 20:10:25,614 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 192 transitions, 2026 flow [2024-06-27 20:10:25,614 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 20:10:25,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:10:25,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:10:25,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 20:10:25,615 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 20:10:25,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:10:25,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1300371218, now seen corresponding path program 8 times [2024-06-27 20:10:25,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:10:25,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485828545] [2024-06-27 20:10:25,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:10:25,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:10:25,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:10:26,320 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 20:10:26,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:10:26,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485828545] [2024-06-27 20:10:26,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485828545] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:10:26,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:10:26,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:10:26,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390434005] [2024-06-27 20:10:26,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:10:26,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:10:26,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:10:26,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:10:26,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:10:26,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:10:26,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 192 transitions, 2026 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 20:10:26,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:10:26,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:10:26,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:10:26,609 INFO L124 PetriNetUnfolderBase]: 539/955 cut-off events. [2024-06-27 20:10:26,609 INFO L125 PetriNetUnfolderBase]: For 48017/48017 co-relation queries the response was YES. [2024-06-27 20:10:26,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6106 conditions, 955 events. 539/955 cut-off events. For 48017/48017 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4736 event pairs, 93 based on Foata normal form. 2/956 useless extension candidates. Maximal degree in co-relation 6004. Up to 905 conditions per place. [2024-06-27 20:10:26,616 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 180 selfloop transitions, 21 changer transitions 0/203 dead transitions. [2024-06-27 20:10:26,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 203 transitions, 2488 flow [2024-06-27 20:10:26,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:10:26,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:10:26,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 89 transitions. [2024-06-27 20:10:26,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3296296296296296 [2024-06-27 20:10:26,617 INFO L175 Difference]: Start difference. First operand has 219 places, 192 transitions, 2026 flow. Second operand 9 states and 89 transitions. [2024-06-27 20:10:26,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 203 transitions, 2488 flow [2024-06-27 20:10:26,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 203 transitions, 2435 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-27 20:10:26,740 INFO L231 Difference]: Finished difference. Result has 223 places, 193 transitions, 2057 flow [2024-06-27 20:10:26,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1973, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2057, PETRI_PLACES=223, PETRI_TRANSITIONS=193} [2024-06-27 20:10:26,741 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 194 predicate places. [2024-06-27 20:10:26,741 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 193 transitions, 2057 flow [2024-06-27 20:10:26,741 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 20:10:26,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:10:26,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:10:26,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 20:10:26,742 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 20:10:26,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:10:26,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1692974791, now seen corresponding path program 3 times [2024-06-27 20:10:26,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:10:26,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615336859] [2024-06-27 20:10:26,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:10:26,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:10:26,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:10:27,437 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 20:10:27,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:10:27,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615336859] [2024-06-27 20:10:27,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615336859] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:10:27,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:10:27,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:10:27,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888316135] [2024-06-27 20:10:27,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:10:27,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:10:27,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:10:27,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:10:27,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:10:27,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:10:27,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 193 transitions, 2057 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 20:10:27,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:10:27,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:10:27,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:10:27,764 INFO L124 PetriNetUnfolderBase]: 543/962 cut-off events. [2024-06-27 20:10:27,764 INFO L125 PetriNetUnfolderBase]: For 49402/49402 co-relation queries the response was YES. [2024-06-27 20:10:27,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6174 conditions, 962 events. 543/962 cut-off events. For 49402/49402 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 4752 event pairs, 130 based on Foata normal form. 2/963 useless extension candidates. Maximal degree in co-relation 6070. Up to 918 conditions per place. [2024-06-27 20:10:27,771 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 182 selfloop transitions, 19 changer transitions 0/203 dead transitions. [2024-06-27 20:10:27,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 203 transitions, 2499 flow [2024-06-27 20:10:27,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:10:27,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:10:27,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2024-06-27 20:10:27,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32592592592592595 [2024-06-27 20:10:27,771 INFO L175 Difference]: Start difference. First operand has 223 places, 193 transitions, 2057 flow. Second operand 9 states and 88 transitions. [2024-06-27 20:10:27,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 203 transitions, 2499 flow [2024-06-27 20:10:27,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 203 transitions, 2425 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-27 20:10:27,889 INFO L231 Difference]: Finished difference. Result has 225 places, 194 transitions, 2049 flow [2024-06-27 20:10:27,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1983, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2049, PETRI_PLACES=225, PETRI_TRANSITIONS=194} [2024-06-27 20:10:27,889 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 196 predicate places. [2024-06-27 20:10:27,889 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 194 transitions, 2049 flow [2024-06-27 20:10:27,889 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 20:10:27,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:10:27,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:10:27,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 20:10:27,890 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 20:10:27,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:10:27,890 INFO L85 PathProgramCache]: Analyzing trace with hash 886796157, now seen corresponding path program 4 times [2024-06-27 20:10:27,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:10:27,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950596389] [2024-06-27 20:10:27,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:10:27,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:10:27,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:10:28,746 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 20:10:28,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:10:28,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950596389] [2024-06-27 20:10:28,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950596389] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:10:28,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:10:28,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:10:28,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421743989] [2024-06-27 20:10:28,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:10:28,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:10:28,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:10:28,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:10:28,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:10:28,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:10:28,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 194 transitions, 2049 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 20:10:28,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:10:28,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:10:28,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:10:29,066 INFO L124 PetriNetUnfolderBase]: 547/970 cut-off events. [2024-06-27 20:10:29,066 INFO L125 PetriNetUnfolderBase]: For 50520/50520 co-relation queries the response was YES. [2024-06-27 20:10:29,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6195 conditions, 970 events. 547/970 cut-off events. For 50520/50520 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4832 event pairs, 95 based on Foata normal form. 2/971 useless extension candidates. Maximal degree in co-relation 6090. Up to 876 conditions per place. [2024-06-27 20:10:29,074 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 166 selfloop transitions, 38 changer transitions 0/206 dead transitions. [2024-06-27 20:10:29,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 206 transitions, 2551 flow [2024-06-27 20:10:29,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:10:29,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:10:29,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-27 20:10:29,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34814814814814815 [2024-06-27 20:10:29,075 INFO L175 Difference]: Start difference. First operand has 225 places, 194 transitions, 2049 flow. Second operand 9 states and 94 transitions. [2024-06-27 20:10:29,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 206 transitions, 2551 flow [2024-06-27 20:10:29,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 206 transitions, 2495 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 20:10:29,217 INFO L231 Difference]: Finished difference. Result has 227 places, 195 transitions, 2097 flow [2024-06-27 20:10:29,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1995, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2097, PETRI_PLACES=227, PETRI_TRANSITIONS=195} [2024-06-27 20:10:29,217 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 198 predicate places. [2024-06-27 20:10:29,218 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 195 transitions, 2097 flow [2024-06-27 20:10:29,218 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 20:10:29,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:10:29,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:10:29,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 20:10:29,218 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 20:10:29,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:10:29,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1342900372, now seen corresponding path program 7 times [2024-06-27 20:10:29,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:10:29,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508072315] [2024-06-27 20:10:29,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:10:29,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:10:29,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:10:29,988 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 20:10:29,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:10:29,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508072315] [2024-06-27 20:10:29,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508072315] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:10:29,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:10:29,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:10:29,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965072854] [2024-06-27 20:10:29,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:10:29,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:10:29,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:10:29,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:10:29,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:10:30,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:10:30,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 195 transitions, 2097 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 20:10:30,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:10:30,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:10:30,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:10:30,343 INFO L124 PetriNetUnfolderBase]: 553/980 cut-off events. [2024-06-27 20:10:30,344 INFO L125 PetriNetUnfolderBase]: For 50565/50565 co-relation queries the response was YES. [2024-06-27 20:10:30,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6277 conditions, 980 events. 553/980 cut-off events. For 50565/50565 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4924 event pairs, 93 based on Foata normal form. 2/981 useless extension candidates. Maximal degree in co-relation 6171. Up to 912 conditions per place. [2024-06-27 20:10:30,350 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 183 selfloop transitions, 27 changer transitions 0/212 dead transitions. [2024-06-27 20:10:30,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 212 transitions, 2630 flow [2024-06-27 20:10:30,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:10:30,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:10:30,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-27 20:10:30,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33666666666666667 [2024-06-27 20:10:30,351 INFO L175 Difference]: Start difference. First operand has 227 places, 195 transitions, 2097 flow. Second operand 10 states and 101 transitions. [2024-06-27 20:10:30,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 212 transitions, 2630 flow [2024-06-27 20:10:30,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 212 transitions, 2536 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-27 20:10:30,471 INFO L231 Difference]: Finished difference. Result has 232 places, 200 transitions, 2163 flow [2024-06-27 20:10:30,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2005, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2163, PETRI_PLACES=232, PETRI_TRANSITIONS=200} [2024-06-27 20:10:30,472 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 203 predicate places. [2024-06-27 20:10:30,472 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 200 transitions, 2163 flow [2024-06-27 20:10:30,472 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 20:10:30,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:10:30,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:10:30,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 20:10:30,472 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 20:10:30,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:10:30,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1427269792, now seen corresponding path program 8 times [2024-06-27 20:10:30,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:10:30,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153572190] [2024-06-27 20:10:30,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:10:30,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:10:30,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:10:31,139 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 20:10:31,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:10:31,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153572190] [2024-06-27 20:10:31,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153572190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:10:31,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:10:31,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:10:31,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743556205] [2024-06-27 20:10:31,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:10:31,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:10:31,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:10:31,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:10:31,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:10:31,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:10:31,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 200 transitions, 2163 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 20:10:31,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:10:31,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:10:31,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:10:31,451 INFO L124 PetriNetUnfolderBase]: 549/974 cut-off events. [2024-06-27 20:10:31,451 INFO L125 PetriNetUnfolderBase]: For 47683/47683 co-relation queries the response was YES. [2024-06-27 20:10:31,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6135 conditions, 974 events. 549/974 cut-off events. For 47683/47683 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4866 event pairs, 92 based on Foata normal form. 2/975 useless extension candidates. Maximal degree in co-relation 6026. Up to 693 conditions per place. [2024-06-27 20:10:31,460 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 149 selfloop transitions, 66 changer transitions 0/217 dead transitions. [2024-06-27 20:10:31,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 217 transitions, 2821 flow [2024-06-27 20:10:31,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:10:31,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:10:31,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-27 20:10:31,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37333333333333335 [2024-06-27 20:10:31,461 INFO L175 Difference]: Start difference. First operand has 232 places, 200 transitions, 2163 flow. Second operand 10 states and 112 transitions. [2024-06-27 20:10:31,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 217 transitions, 2821 flow [2024-06-27 20:10:31,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 217 transitions, 2712 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-27 20:10:31,584 INFO L231 Difference]: Finished difference. Result has 236 places, 200 transitions, 2191 flow [2024-06-27 20:10:31,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2054, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2191, PETRI_PLACES=236, PETRI_TRANSITIONS=200} [2024-06-27 20:10:31,585 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 207 predicate places. [2024-06-27 20:10:31,585 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 200 transitions, 2191 flow [2024-06-27 20:10:31,585 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 20:10:31,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:10:31,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:10:31,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 20:10:31,585 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 20:10:31,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:10:31,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1693301221, now seen corresponding path program 5 times [2024-06-27 20:10:31,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:10:31,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110813338] [2024-06-27 20:10:31,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:10:31,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:10:31,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:10:32,255 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 20:10:32,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:10:32,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110813338] [2024-06-27 20:10:32,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110813338] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:10:32,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:10:32,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:10:32,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164022068] [2024-06-27 20:10:32,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:10:32,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:10:32,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:10:32,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:10:32,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:10:32,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:10:32,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 200 transitions, 2191 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 20:10:32,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:10:32,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:10:32,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:10:32,590 INFO L124 PetriNetUnfolderBase]: 553/982 cut-off events. [2024-06-27 20:10:32,590 INFO L125 PetriNetUnfolderBase]: For 49187/49187 co-relation queries the response was YES. [2024-06-27 20:10:32,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6264 conditions, 982 events. 553/982 cut-off events. For 49187/49187 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4923 event pairs, 131 based on Foata normal form. 2/983 useless extension candidates. Maximal degree in co-relation 6154. Up to 924 conditions per place. [2024-06-27 20:10:32,598 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 189 selfloop transitions, 21 changer transitions 0/212 dead transitions. [2024-06-27 20:10:32,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 212 transitions, 2657 flow [2024-06-27 20:10:32,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:10:32,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:10:32,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 96 transitions. [2024-06-27 20:10:32,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32 [2024-06-27 20:10:32,599 INFO L175 Difference]: Start difference. First operand has 236 places, 200 transitions, 2191 flow. Second operand 10 states and 96 transitions. [2024-06-27 20:10:32,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 212 transitions, 2657 flow [2024-06-27 20:10:32,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 212 transitions, 2497 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 20:10:32,726 INFO L231 Difference]: Finished difference. Result has 236 places, 201 transitions, 2101 flow [2024-06-27 20:10:32,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2031, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2101, PETRI_PLACES=236, PETRI_TRANSITIONS=201} [2024-06-27 20:10:32,727 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 207 predicate places. [2024-06-27 20:10:32,727 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 201 transitions, 2101 flow [2024-06-27 20:10:32,727 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 20:10:32,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:10:32,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:10:32,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 20:10:32,727 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 20:10:32,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:10:32,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1348412854, now seen corresponding path program 9 times [2024-06-27 20:10:32,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:10:32,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547776394] [2024-06-27 20:10:32,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:10:32,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:10:32,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:10:33,523 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 20:10:33,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:10:33,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547776394] [2024-06-27 20:10:33,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547776394] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:10:33,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:10:33,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:10:33,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665657965] [2024-06-27 20:10:33,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:10:33,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:10:33,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:10:33,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:10:33,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:10:33,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:10:33,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 201 transitions, 2101 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 20:10:33,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:10:33,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:10:33,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:10:33,951 INFO L124 PetriNetUnfolderBase]: 557/991 cut-off events. [2024-06-27 20:10:33,951 INFO L125 PetriNetUnfolderBase]: For 50918/50918 co-relation queries the response was YES. [2024-06-27 20:10:33,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6229 conditions, 991 events. 557/991 cut-off events. For 50918/50918 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 4979 event pairs, 74 based on Foata normal form. 2/992 useless extension candidates. Maximal degree in co-relation 6118. Up to 774 conditions per place. [2024-06-27 20:10:33,959 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 150 selfloop transitions, 62 changer transitions 0/214 dead transitions. [2024-06-27 20:10:33,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 214 transitions, 2595 flow [2024-06-27 20:10:33,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:10:33,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:10:33,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-27 20:10:33,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3592592592592593 [2024-06-27 20:10:33,960 INFO L175 Difference]: Start difference. First operand has 236 places, 201 transitions, 2101 flow. Second operand 9 states and 97 transitions. [2024-06-27 20:10:33,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 214 transitions, 2595 flow [2024-06-27 20:10:34,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 214 transitions, 2535 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 20:10:34,081 INFO L231 Difference]: Finished difference. Result has 237 places, 202 transitions, 2209 flow [2024-06-27 20:10:34,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2041, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2209, PETRI_PLACES=237, PETRI_TRANSITIONS=202} [2024-06-27 20:10:34,081 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 208 predicate places. [2024-06-27 20:10:34,081 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 202 transitions, 2209 flow [2024-06-27 20:10:34,081 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 20:10:34,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:10:34,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:10:34,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 20:10:34,082 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 20:10:34,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:10:34,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1883172197, now seen corresponding path program 6 times [2024-06-27 20:10:34,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:10:34,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551881269] [2024-06-27 20:10:34,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:10:34,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:10:34,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:10:34,853 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 20:10:34,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:10:34,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551881269] [2024-06-27 20:10:34,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551881269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:10:34,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:10:34,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:10:34,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870216512] [2024-06-27 20:10:34,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:10:34,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:10:34,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:10:34,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:10:34,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:10:34,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:10:34,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 202 transitions, 2209 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 20:10:34,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:10:34,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:10:34,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:10:35,198 INFO L124 PetriNetUnfolderBase]: 561/999 cut-off events. [2024-06-27 20:10:35,198 INFO L125 PetriNetUnfolderBase]: For 52814/52814 co-relation queries the response was YES. [2024-06-27 20:10:35,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6383 conditions, 999 events. 561/999 cut-off events. For 52814/52814 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5038 event pairs, 100 based on Foata normal form. 2/1000 useless extension candidates. Maximal degree in co-relation 6271. Up to 949 conditions per place. [2024-06-27 20:10:35,206 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 188 selfloop transitions, 23 changer transitions 0/213 dead transitions. [2024-06-27 20:10:35,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 213 transitions, 2677 flow [2024-06-27 20:10:35,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:10:35,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:10:35,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 96 transitions. [2024-06-27 20:10:35,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32 [2024-06-27 20:10:35,208 INFO L175 Difference]: Start difference. First operand has 237 places, 202 transitions, 2209 flow. Second operand 10 states and 96 transitions. [2024-06-27 20:10:35,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 213 transitions, 2677 flow [2024-06-27 20:10:35,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 213 transitions, 2519 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-27 20:10:35,350 INFO L231 Difference]: Finished difference. Result has 240 places, 203 transitions, 2127 flow [2024-06-27 20:10:35,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2051, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2127, PETRI_PLACES=240, PETRI_TRANSITIONS=203} [2024-06-27 20:10:35,350 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 211 predicate places. [2024-06-27 20:10:35,350 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 203 transitions, 2127 flow [2024-06-27 20:10:35,351 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 20:10:35,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:10:35,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:10:35,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 20:10:35,351 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 20:10:35,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:10:35,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1305881468, now seen corresponding path program 10 times [2024-06-27 20:10:35,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:10:35,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950717368] [2024-06-27 20:10:35,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:10:35,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:10:35,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:10:36,130 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 20:10:36,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:10:36,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950717368] [2024-06-27 20:10:36,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950717368] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:10:36,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:10:36,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:10:36,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464387412] [2024-06-27 20:10:36,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:10:36,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:10:36,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:10:36,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:10:36,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:10:36,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:10:36,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 203 transitions, 2127 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 20:10:36,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:10:36,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:10:36,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:10:36,468 INFO L124 PetriNetUnfolderBase]: 565/1007 cut-off events. [2024-06-27 20:10:36,469 INFO L125 PetriNetUnfolderBase]: For 53889/53889 co-relation queries the response was YES. [2024-06-27 20:10:36,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6334 conditions, 1007 events. 565/1007 cut-off events. For 53889/53889 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5091 event pairs, 80 based on Foata normal form. 2/1008 useless extension candidates. Maximal degree in co-relation 6221. Up to 878 conditions per place. [2024-06-27 20:10:36,476 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 173 selfloop transitions, 41 changer transitions 0/216 dead transitions. [2024-06-27 20:10:36,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 216 transitions, 2625 flow [2024-06-27 20:10:36,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:10:36,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:10:36,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-06-27 20:10:36,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34444444444444444 [2024-06-27 20:10:36,477 INFO L175 Difference]: Start difference. First operand has 240 places, 203 transitions, 2127 flow. Second operand 9 states and 93 transitions. [2024-06-27 20:10:36,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 216 transitions, 2625 flow [2024-06-27 20:10:36,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 216 transitions, 2555 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 20:10:36,616 INFO L231 Difference]: Finished difference. Result has 241 places, 204 transitions, 2185 flow [2024-06-27 20:10:36,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2057, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2185, PETRI_PLACES=241, PETRI_TRANSITIONS=204} [2024-06-27 20:10:36,617 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 212 predicate places. [2024-06-27 20:10:36,617 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 204 transitions, 2185 flow [2024-06-27 20:10:36,617 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 20:10:36,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:10:36,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:10:36,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 20:10:36,617 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 20:10:36,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:10:36,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1883179916, now seen corresponding path program 9 times [2024-06-27 20:10:36,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:10:36,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713982909] [2024-06-27 20:10:36,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:10:36,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:10:36,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:10:37,365 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 20:10:37,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:10:37,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713982909] [2024-06-27 20:10:37,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713982909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:10:37,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:10:37,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:10:37,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366360345] [2024-06-27 20:10:37,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:10:37,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:10:37,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:10:37,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:10:37,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:10:37,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:10:37,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 204 transitions, 2185 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 20:10:37,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:10:37,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:10:37,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:10:37,697 INFO L124 PetriNetUnfolderBase]: 561/1001 cut-off events. [2024-06-27 20:10:37,697 INFO L125 PetriNetUnfolderBase]: For 50474/50474 co-relation queries the response was YES. [2024-06-27 20:10:37,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6194 conditions, 1001 events. 561/1001 cut-off events. For 50474/50474 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5059 event pairs, 95 based on Foata normal form. 2/1002 useless extension candidates. Maximal degree in co-relation 6080. Up to 932 conditions per place. [2024-06-27 20:10:37,705 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 188 selfloop transitions, 27 changer transitions 0/217 dead transitions. [2024-06-27 20:10:37,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 217 transitions, 2651 flow [2024-06-27 20:10:37,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:10:37,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:10:37,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-27 20:10:37,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34 [2024-06-27 20:10:37,706 INFO L175 Difference]: Start difference. First operand has 241 places, 204 transitions, 2185 flow. Second operand 10 states and 102 transitions. [2024-06-27 20:10:37,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 217 transitions, 2651 flow [2024-06-27 20:10:37,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 217 transitions, 2511 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-27 20:10:37,837 INFO L231 Difference]: Finished difference. Result has 244 places, 204 transitions, 2104 flow [2024-06-27 20:10:37,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2045, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2104, PETRI_PLACES=244, PETRI_TRANSITIONS=204} [2024-06-27 20:10:37,837 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 215 predicate places. [2024-06-27 20:10:37,838 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 204 transitions, 2104 flow [2024-06-27 20:10:37,838 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 20:10:37,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:10:37,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:10:37,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 20:10:37,838 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 20:10:37,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:10:37,838 INFO L85 PathProgramCache]: Analyzing trace with hash 549543514, now seen corresponding path program 11 times [2024-06-27 20:10:37,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:10:37,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283660883] [2024-06-27 20:10:37,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:10:37,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:10:37,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:10:38,482 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 20:10:38,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:10:38,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283660883] [2024-06-27 20:10:38,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283660883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:10:38,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:10:38,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:10:38,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168261116] [2024-06-27 20:10:38,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:10:38,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:10:38,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:10:38,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:10:38,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:10:38,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:10:38,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 204 transitions, 2104 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 20:10:38,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:10:38,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:10:38,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:10:38,893 INFO L124 PetriNetUnfolderBase]: 574/1027 cut-off events. [2024-06-27 20:10:38,893 INFO L125 PetriNetUnfolderBase]: For 51488/51488 co-relation queries the response was YES. [2024-06-27 20:10:38,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6236 conditions, 1027 events. 574/1027 cut-off events. For 51488/51488 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5256 event pairs, 89 based on Foata normal form. 2/1028 useless extension candidates. Maximal degree in co-relation 6121. Up to 944 conditions per place. [2024-06-27 20:10:38,899 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 200 selfloop transitions, 23 changer transitions 0/225 dead transitions. [2024-06-27 20:10:38,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 225 transitions, 2655 flow [2024-06-27 20:10:38,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:10:38,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:10:38,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-27 20:10:38,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-27 20:10:38,900 INFO L175 Difference]: Start difference. First operand has 244 places, 204 transitions, 2104 flow. Second operand 10 states and 105 transitions. [2024-06-27 20:10:38,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 225 transitions, 2655 flow [2024-06-27 20:10:39,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 225 transitions, 2573 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 20:10:39,028 INFO L231 Difference]: Finished difference. Result has 246 places, 207 transitions, 2136 flow [2024-06-27 20:10:39,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2022, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2136, PETRI_PLACES=246, PETRI_TRANSITIONS=207} [2024-06-27 20:10:39,028 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 217 predicate places. [2024-06-27 20:10:39,029 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 207 transitions, 2136 flow [2024-06-27 20:10:39,029 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 20:10:39,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:10:39,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:10:39,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 20:10:39,029 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 20:10:39,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:10:39,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1338290786, now seen corresponding path program 12 times [2024-06-27 20:10:39,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:10:39,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432365555] [2024-06-27 20:10:39,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:10:39,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:10:39,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:10:39,642 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 20:10:39,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:10:39,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432365555] [2024-06-27 20:10:39,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432365555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:10:39,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:10:39,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:10:39,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608400611] [2024-06-27 20:10:39,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:10:39,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:10:39,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:10:39,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:10:39,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:10:39,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:10:39,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 207 transitions, 2136 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 20:10:39,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:10:39,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:10:39,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:10:40,033 INFO L124 PetriNetUnfolderBase]: 587/1056 cut-off events. [2024-06-27 20:10:40,034 INFO L125 PetriNetUnfolderBase]: For 53892/53892 co-relation queries the response was YES. [2024-06-27 20:10:40,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6414 conditions, 1056 events. 587/1056 cut-off events. For 53892/53892 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 5509 event pairs, 106 based on Foata normal form. 2/1057 useless extension candidates. Maximal degree in co-relation 6296. Up to 971 conditions per place. [2024-06-27 20:10:40,044 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 203 selfloop transitions, 24 changer transitions 0/229 dead transitions. [2024-06-27 20:10:40,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 229 transitions, 2703 flow [2024-06-27 20:10:40,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:10:40,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:10:40,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-27 20:10:40,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3466666666666667 [2024-06-27 20:10:40,045 INFO L175 Difference]: Start difference. First operand has 246 places, 207 transitions, 2136 flow. Second operand 10 states and 104 transitions. [2024-06-27 20:10:40,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 229 transitions, 2703 flow [2024-06-27 20:10:40,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 229 transitions, 2619 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-27 20:10:40,206 INFO L231 Difference]: Finished difference. Result has 252 places, 210 transitions, 2174 flow [2024-06-27 20:10:40,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2052, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2174, PETRI_PLACES=252, PETRI_TRANSITIONS=210} [2024-06-27 20:10:40,206 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 223 predicate places. [2024-06-27 20:10:40,206 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 210 transitions, 2174 flow [2024-06-27 20:10:40,207 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 20:10:40,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:10:40,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:10:40,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 20:10:40,207 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 20:10:40,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:10:40,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1020930146, now seen corresponding path program 13 times [2024-06-27 20:10:40,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:10:40,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999349623] [2024-06-27 20:10:40,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:10:40,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:10:40,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:10:40,913 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 20:10:40,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:10:40,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999349623] [2024-06-27 20:10:40,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999349623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:10:40,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:10:40,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:10:40,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725324824] [2024-06-27 20:10:40,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:10:40,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:10:40,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:10:40,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:10:40,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:10:40,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:10:40,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 210 transitions, 2174 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 20:10:40,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:10:40,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:10:40,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:10:41,313 INFO L124 PetriNetUnfolderBase]: 595/1072 cut-off events. [2024-06-27 20:10:41,314 INFO L125 PetriNetUnfolderBase]: For 55586/55586 co-relation queries the response was YES. [2024-06-27 20:10:41,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6515 conditions, 1072 events. 595/1072 cut-off events. For 55586/55586 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5641 event pairs, 108 based on Foata normal form. 2/1073 useless extension candidates. Maximal degree in co-relation 6394. Up to 988 conditions per place. [2024-06-27 20:10:41,323 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 201 selfloop transitions, 27 changer transitions 0/230 dead transitions. [2024-06-27 20:10:41,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 230 transitions, 2732 flow [2024-06-27 20:10:41,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:10:41,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:10:41,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-27 20:10:41,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3466666666666667 [2024-06-27 20:10:41,324 INFO L175 Difference]: Start difference. First operand has 252 places, 210 transitions, 2174 flow. Second operand 10 states and 104 transitions. [2024-06-27 20:10:41,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 230 transitions, 2732 flow [2024-06-27 20:10:41,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 230 transitions, 2640 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-27 20:10:41,487 INFO L231 Difference]: Finished difference. Result has 257 places, 212 transitions, 2198 flow [2024-06-27 20:10:41,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2082, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2198, PETRI_PLACES=257, PETRI_TRANSITIONS=212} [2024-06-27 20:10:41,487 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 228 predicate places. [2024-06-27 20:10:41,487 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 212 transitions, 2198 flow [2024-06-27 20:10:41,488 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 20:10:41,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:10:41,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:10:41,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 20:10:41,488 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 20:10:41,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:10:41,488 INFO L85 PathProgramCache]: Analyzing trace with hash -314437310, now seen corresponding path program 14 times [2024-06-27 20:10:41,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:10:41,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172335083] [2024-06-27 20:10:41,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:10:41,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:10:41,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:10:42,147 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 20:10:42,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:10:42,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172335083] [2024-06-27 20:10:42,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172335083] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:10:42,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:10:42,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:10:42,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098419221] [2024-06-27 20:10:42,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:10:42,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:10:42,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:10:42,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:10:42,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:10:42,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:10:42,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 212 transitions, 2198 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 20:10:42,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:10:42,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:10:42,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:10:42,513 INFO L124 PetriNetUnfolderBase]: 599/1080 cut-off events. [2024-06-27 20:10:42,513 INFO L125 PetriNetUnfolderBase]: For 57204/57204 co-relation queries the response was YES. [2024-06-27 20:10:42,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6577 conditions, 1080 events. 599/1080 cut-off events. For 57204/57204 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5672 event pairs, 86 based on Foata normal form. 2/1081 useless extension candidates. Maximal degree in co-relation 6454. Up to 960 conditions per place. [2024-06-27 20:10:42,523 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 202 selfloop transitions, 27 changer transitions 0/231 dead transitions. [2024-06-27 20:10:42,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 231 transitions, 2748 flow [2024-06-27 20:10:42,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:10:42,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:10:42,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-27 20:10:42,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33666666666666667 [2024-06-27 20:10:42,525 INFO L175 Difference]: Start difference. First operand has 257 places, 212 transitions, 2198 flow. Second operand 10 states and 101 transitions. [2024-06-27 20:10:42,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 231 transitions, 2748 flow [2024-06-27 20:10:42,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 231 transitions, 2653 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-27 20:10:42,689 INFO L231 Difference]: Finished difference. Result has 260 places, 213 transitions, 2211 flow [2024-06-27 20:10:42,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2103, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2211, PETRI_PLACES=260, PETRI_TRANSITIONS=213} [2024-06-27 20:10:42,690 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 231 predicate places. [2024-06-27 20:10:42,690 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 213 transitions, 2211 flow [2024-06-27 20:10:42,690 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 20:10:42,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:10:42,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:10:42,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 20:10:42,690 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 20:10:42,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:10:42,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1590294374, now seen corresponding path program 15 times [2024-06-27 20:10:42,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:10:42,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150326064] [2024-06-27 20:10:42,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:10:42,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:10:42,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:10:43,465 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 20:10:43,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:10:43,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150326064] [2024-06-27 20:10:43,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150326064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:10:43,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:10:43,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:10:43,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915004971] [2024-06-27 20:10:43,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:10:43,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:10:43,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:10:43,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:10:43,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:10:43,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:10:43,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 213 transitions, 2211 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 20:10:43,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:10:43,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:10:43,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:10:43,888 INFO L124 PetriNetUnfolderBase]: 603/1088 cut-off events. [2024-06-27 20:10:43,889 INFO L125 PetriNetUnfolderBase]: For 59030/59030 co-relation queries the response was YES. [2024-06-27 20:10:43,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6639 conditions, 1088 events. 603/1088 cut-off events. For 59030/59030 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5731 event pairs, 104 based on Foata normal form. 2/1089 useless extension candidates. Maximal degree in co-relation 6515. Up to 1004 conditions per place. [2024-06-27 20:10:43,899 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 203 selfloop transitions, 26 changer transitions 0/231 dead transitions. [2024-06-27 20:10:43,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 231 transitions, 2768 flow [2024-06-27 20:10:43,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:10:43,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:10:43,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-27 20:10:43,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-27 20:10:43,900 INFO L175 Difference]: Start difference. First operand has 260 places, 213 transitions, 2211 flow. Second operand 10 states and 105 transitions. [2024-06-27 20:10:43,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 231 transitions, 2768 flow [2024-06-27 20:10:44,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 231 transitions, 2634 flow, removed 31 selfloop flow, removed 14 redundant places. [2024-06-27 20:10:44,066 INFO L231 Difference]: Finished difference. Result has 256 places, 214 transitions, 2185 flow [2024-06-27 20:10:44,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2077, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2185, PETRI_PLACES=256, PETRI_TRANSITIONS=214} [2024-06-27 20:10:44,067 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 227 predicate places. [2024-06-27 20:10:44,067 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 214 transitions, 2185 flow [2024-06-27 20:10:44,067 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 20:10:44,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:10:44,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:10:44,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 20:10:44,068 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 20:10:44,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:10:44,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1406101268, now seen corresponding path program 16 times [2024-06-27 20:10:44,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:10:44,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040393716] [2024-06-27 20:10:44,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:10:44,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:10:44,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:10:44,848 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 20:10:44,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:10:44,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040393716] [2024-06-27 20:10:44,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040393716] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:10:44,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:10:44,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:10:44,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083546302] [2024-06-27 20:10:44,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:10:44,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:10:44,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:10:44,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:10:44,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:10:44,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:10:44,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 214 transitions, 2185 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 20:10:44,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:10:44,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:10:44,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:10:45,281 INFO L124 PetriNetUnfolderBase]: 600/1083 cut-off events. [2024-06-27 20:10:45,282 INFO L125 PetriNetUnfolderBase]: For 53652/53652 co-relation queries the response was YES. [2024-06-27 20:10:45,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6284 conditions, 1083 events. 600/1083 cut-off events. For 53652/53652 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5721 event pairs, 107 based on Foata normal form. 2/1084 useless extension candidates. Maximal degree in co-relation 6166. Up to 952 conditions per place. [2024-06-27 20:10:45,291 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 188 selfloop transitions, 41 changer transitions 0/231 dead transitions. [2024-06-27 20:10:45,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 231 transitions, 2694 flow [2024-06-27 20:10:45,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:10:45,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:10:45,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-27 20:10:45,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36 [2024-06-27 20:10:45,293 INFO L175 Difference]: Start difference. First operand has 256 places, 214 transitions, 2185 flow. Second operand 10 states and 108 transitions. [2024-06-27 20:10:45,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 231 transitions, 2694 flow [2024-06-27 20:10:45,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 231 transitions, 2580 flow, removed 26 selfloop flow, removed 10 redundant places. [2024-06-27 20:10:45,430 INFO L231 Difference]: Finished difference. Result has 256 places, 214 transitions, 2157 flow [2024-06-27 20:10:45,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2071, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2157, PETRI_PLACES=256, PETRI_TRANSITIONS=214} [2024-06-27 20:10:45,430 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 227 predicate places. [2024-06-27 20:10:45,430 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 214 transitions, 2157 flow [2024-06-27 20:10:45,431 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 20:10:45,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:10:45,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:10:45,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 20:10:45,431 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 20:10:45,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:10:45,431 INFO L85 PathProgramCache]: Analyzing trace with hash 2076149437, now seen corresponding path program 7 times [2024-06-27 20:10:45,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:10:45,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370638085] [2024-06-27 20:10:45,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:10:45,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:10:45,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:10:46,036 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 20:10:46,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:10:46,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370638085] [2024-06-27 20:10:46,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370638085] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:10:46,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:10:46,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:10:46,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133254276] [2024-06-27 20:10:46,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:10:46,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:10:46,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:10:46,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:10:46,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:10:46,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:10:46,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 214 transitions, 2157 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 20:10:46,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:10:46,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:10:46,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:10:46,348 INFO L124 PetriNetUnfolderBase]: 597/1078 cut-off events. [2024-06-27 20:10:46,348 INFO L125 PetriNetUnfolderBase]: For 47964/47964 co-relation queries the response was YES. [2024-06-27 20:10:46,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6033 conditions, 1078 events. 597/1078 cut-off events. For 47964/47964 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5690 event pairs, 127 based on Foata normal form. 2/1079 useless extension candidates. Maximal degree in co-relation 5916. Up to 1036 conditions per place. [2024-06-27 20:10:46,358 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 208 selfloop transitions, 18 changer transitions 0/228 dead transitions. [2024-06-27 20:10:46,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 228 transitions, 2669 flow [2024-06-27 20:10:46,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:10:46,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:10:46,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 99 transitions. [2024-06-27 20:10:46,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33 [2024-06-27 20:10:46,359 INFO L175 Difference]: Start difference. First operand has 256 places, 214 transitions, 2157 flow. Second operand 10 states and 99 transitions. [2024-06-27 20:10:46,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 228 transitions, 2669 flow [2024-06-27 20:10:46,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 228 transitions, 2492 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-27 20:10:46,505 INFO L231 Difference]: Finished difference. Result has 257 places, 214 transitions, 2020 flow [2024-06-27 20:10:46,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1980, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2020, PETRI_PLACES=257, PETRI_TRANSITIONS=214} [2024-06-27 20:10:46,505 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 228 predicate places. [2024-06-27 20:10:46,505 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 214 transitions, 2020 flow [2024-06-27 20:10:46,505 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 20:10:46,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:10:46,506 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 20:10:46,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 20:10:46,506 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 20:10:46,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:10:46,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1738392233, now seen corresponding path program 1 times [2024-06-27 20:10:46,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:10:46,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685942757] [2024-06-27 20:10:46,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:10:46,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:10:46,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:10:47,259 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 20:10:47,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:10:47,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685942757] [2024-06-27 20:10:47,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685942757] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:10:47,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:10:47,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:10:47,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102203821] [2024-06-27 20:10:47,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:10:47,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:10:47,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:10:47,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:10:47,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:10:47,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:10:47,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 214 transitions, 2020 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 20:10:47,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:10:47,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:10:47,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:10:47,668 INFO L124 PetriNetUnfolderBase]: 609/1106 cut-off events. [2024-06-27 20:10:47,669 INFO L125 PetriNetUnfolderBase]: For 64809/64809 co-relation queries the response was YES. [2024-06-27 20:10:47,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5940 conditions, 1106 events. 609/1106 cut-off events. For 64809/64809 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5868 event pairs, 97 based on Foata normal form. 8/1113 useless extension candidates. Maximal degree in co-relation 5824. Up to 894 conditions per place. [2024-06-27 20:10:47,679 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 186 selfloop transitions, 16 changer transitions 30/234 dead transitions. [2024-06-27 20:10:47,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 234 transitions, 2568 flow [2024-06-27 20:10:47,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:10:47,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:10:47,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-27 20:10:47,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34 [2024-06-27 20:10:47,680 INFO L175 Difference]: Start difference. First operand has 257 places, 214 transitions, 2020 flow. Second operand 10 states and 102 transitions. [2024-06-27 20:10:47,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 234 transitions, 2568 flow [2024-06-27 20:10:47,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 234 transitions, 2436 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-06-27 20:10:47,814 INFO L231 Difference]: Finished difference. Result has 256 places, 197 transitions, 1817 flow [2024-06-27 20:10:47,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1888, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1817, PETRI_PLACES=256, PETRI_TRANSITIONS=197} [2024-06-27 20:10:47,815 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 227 predicate places. [2024-06-27 20:10:47,815 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 197 transitions, 1817 flow [2024-06-27 20:10:47,815 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 20:10:47,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:10:47,815 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 20:10:47,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 20:10:47,815 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 20:10:47,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:10:47,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1796484683, now seen corresponding path program 2 times [2024-06-27 20:10:47,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:10:47,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840246044] [2024-06-27 20:10:47,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:10:47,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:10:47,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:10:48,662 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 20:10:48,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:10:48,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840246044] [2024-06-27 20:10:48,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840246044] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:10:48,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:10:48,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:10:48,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251003321] [2024-06-27 20:10:48,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:10:48,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:10:48,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:10:48,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:10:48,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:10:48,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:10:48,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 197 transitions, 1817 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 20:10:48,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:10:48,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:10:48,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:10:49,057 INFO L124 PetriNetUnfolderBase]: 536/959 cut-off events. [2024-06-27 20:10:49,057 INFO L125 PetriNetUnfolderBase]: For 48429/48429 co-relation queries the response was YES. [2024-06-27 20:10:49,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5391 conditions, 959 events. 536/959 cut-off events. For 48429/48429 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 4821 event pairs, 59 based on Foata normal form. 2/960 useless extension candidates. Maximal degree in co-relation 5275. Up to 811 conditions per place. [2024-06-27 20:10:49,065 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 176 selfloop transitions, 35 changer transitions 0/213 dead transitions. [2024-06-27 20:10:49,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 213 transitions, 2303 flow [2024-06-27 20:10:49,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:10:49,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:10:49,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 97 transitions. [2024-06-27 20:10:49,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3233333333333333 [2024-06-27 20:10:49,066 INFO L175 Difference]: Start difference. First operand has 256 places, 197 transitions, 1817 flow. Second operand 10 states and 97 transitions. [2024-06-27 20:10:49,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 213 transitions, 2303 flow [2024-06-27 20:10:49,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 213 transitions, 2253 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-06-27 20:10:49,180 INFO L231 Difference]: Finished difference. Result has 236 places, 198 transitions, 1873 flow [2024-06-27 20:10:49,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1767, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1873, PETRI_PLACES=236, PETRI_TRANSITIONS=198} [2024-06-27 20:10:49,181 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 207 predicate places. [2024-06-27 20:10:49,181 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 198 transitions, 1873 flow [2024-06-27 20:10:49,181 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 20:10:49,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:10:49,181 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 20:10:49,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 20:10:49,182 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 20:10:49,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:10:49,182 INFO L85 PathProgramCache]: Analyzing trace with hash -151546225, now seen corresponding path program 3 times [2024-06-27 20:10:49,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:10:49,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065051186] [2024-06-27 20:10:49,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:10:49,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:10:49,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:10:49,935 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 20:10:49,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:10:49,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065051186] [2024-06-27 20:10:49,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065051186] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:10:49,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:10:49,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:10:49,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333157878] [2024-06-27 20:10:49,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:10:49,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:10:49,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:10:49,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:10:49,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:10:50,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:10:50,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 198 transitions, 1873 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 20:10:50,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:10:50,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:10:50,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:10:50,350 INFO L124 PetriNetUnfolderBase]: 547/980 cut-off events. [2024-06-27 20:10:50,350 INFO L125 PetriNetUnfolderBase]: For 48508/48508 co-relation queries the response was YES. [2024-06-27 20:10:50,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5712 conditions, 980 events. 547/980 cut-off events. For 48508/48508 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 4976 event pairs, 76 based on Foata normal form. 2/981 useless extension candidates. Maximal degree in co-relation 5603. Up to 805 conditions per place. [2024-06-27 20:10:50,358 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 173 selfloop transitions, 41 changer transitions 0/216 dead transitions. [2024-06-27 20:10:50,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 216 transitions, 2547 flow [2024-06-27 20:10:50,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:10:50,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:10:50,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-27 20:10:50,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33666666666666667 [2024-06-27 20:10:50,359 INFO L175 Difference]: Start difference. First operand has 236 places, 198 transitions, 1873 flow. Second operand 10 states and 101 transitions. [2024-06-27 20:10:50,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 216 transitions, 2547 flow [2024-06-27 20:10:50,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 216 transitions, 2455 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 20:10:50,481 INFO L231 Difference]: Finished difference. Result has 238 places, 200 transitions, 1929 flow [2024-06-27 20:10:50,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1781, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1929, PETRI_PLACES=238, PETRI_TRANSITIONS=200} [2024-06-27 20:10:50,481 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 209 predicate places. [2024-06-27 20:10:50,482 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 200 transitions, 1929 flow [2024-06-27 20:10:50,482 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 20:10:50,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:10:50,482 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 20:10:50,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 20:10:50,482 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 20:10:50,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:10:50,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1796604653, now seen corresponding path program 4 times [2024-06-27 20:10:50,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:10:50,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386310066] [2024-06-27 20:10:50,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:10:50,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:10:50,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:10:51,319 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 20:10:51,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:10:51,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386310066] [2024-06-27 20:10:51,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386310066] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:10:51,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:10:51,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:10:51,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546885774] [2024-06-27 20:10:51,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:10:51,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:10:51,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:10:51,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:10:51,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:10:51,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:10:51,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 200 transitions, 1929 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 20:10:51,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:10:51,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:10:51,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:10:51,721 INFO L124 PetriNetUnfolderBase]: 544/975 cut-off events. [2024-06-27 20:10:51,721 INFO L125 PetriNetUnfolderBase]: For 44711/44711 co-relation queries the response was YES. [2024-06-27 20:10:51,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5528 conditions, 975 events. 544/975 cut-off events. For 44711/44711 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 4930 event pairs, 79 based on Foata normal form. 2/976 useless extension candidates. Maximal degree in co-relation 5418. Up to 827 conditions per place. [2024-06-27 20:10:51,729 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 168 selfloop transitions, 45 changer transitions 0/215 dead transitions. [2024-06-27 20:10:51,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 215 transitions, 2395 flow [2024-06-27 20:10:51,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:10:51,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:10:51,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 99 transitions. [2024-06-27 20:10:51,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33 [2024-06-27 20:10:51,730 INFO L175 Difference]: Start difference. First operand has 238 places, 200 transitions, 1929 flow. Second operand 10 states and 99 transitions. [2024-06-27 20:10:51,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 215 transitions, 2395 flow [2024-06-27 20:10:51,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 215 transitions, 2283 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-27 20:10:51,875 INFO L231 Difference]: Finished difference. Result has 242 places, 200 transitions, 1912 flow [2024-06-27 20:10:51,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1817, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1912, PETRI_PLACES=242, PETRI_TRANSITIONS=200} [2024-06-27 20:10:51,876 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 213 predicate places. [2024-06-27 20:10:51,876 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 200 transitions, 1912 flow [2024-06-27 20:10:51,876 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 20:10:51,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:10:51,876 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 20:10:51,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 20:10:51,876 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 20:10:51,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:10:51,877 INFO L85 PathProgramCache]: Analyzing trace with hash -151541389, now seen corresponding path program 1 times [2024-06-27 20:10:51,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:10:51,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536042713] [2024-06-27 20:10:51,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:10:51,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:10:51,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:10:52,981 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 20:10:52,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:10:52,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536042713] [2024-06-27 20:10:52,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536042713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:10:52,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:10:52,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:10:52,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261090086] [2024-06-27 20:10:52,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:10:52,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:10:52,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:10:52,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:10:52,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:10:53,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:10:53,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 200 transitions, 1912 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 20:10:53,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:10:53,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:10:53,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:10:53,484 INFO L124 PetriNetUnfolderBase]: 542/972 cut-off events. [2024-06-27 20:10:53,484 INFO L125 PetriNetUnfolderBase]: For 39471/39471 co-relation queries the response was YES. [2024-06-27 20:10:53,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5391 conditions, 972 events. 542/972 cut-off events. For 39471/39471 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 4949 event pairs, 78 based on Foata normal form. 1/972 useless extension candidates. Maximal degree in co-relation 5279. Up to 821 conditions per place. [2024-06-27 20:10:53,492 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 165 selfloop transitions, 48 changer transitions 0/215 dead transitions. [2024-06-27 20:10:53,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 215 transitions, 2380 flow [2024-06-27 20:10:53,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:10:53,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:10:53,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-06-27 20:10:53,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-27 20:10:53,493 INFO L175 Difference]: Start difference. First operand has 242 places, 200 transitions, 1912 flow. Second operand 10 states and 100 transitions. [2024-06-27 20:10:53,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 215 transitions, 2380 flow [2024-06-27 20:10:53,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 215 transitions, 2271 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-27 20:10:53,610 INFO L231 Difference]: Finished difference. Result has 243 places, 200 transitions, 1907 flow [2024-06-27 20:10:53,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1803, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1907, PETRI_PLACES=243, PETRI_TRANSITIONS=200} [2024-06-27 20:10:53,611 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 214 predicate places. [2024-06-27 20:10:53,611 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 200 transitions, 1907 flow [2024-06-27 20:10:53,611 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 20:10:53,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:10:53,611 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 20:10:53,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 20:10:53,611 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 20:10:53,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:10:53,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1754414187, now seen corresponding path program 1 times [2024-06-27 20:10:53,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:10:53,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381396631] [2024-06-27 20:10:53,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:10:53,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:10:53,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:10:54,456 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 20:10:54,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:10:54,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381396631] [2024-06-27 20:10:54,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381396631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:10:54,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:10:54,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:10:54,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564820188] [2024-06-27 20:10:54,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:10:54,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:10:54,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:10:54,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:10:54,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:10:54,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:10:54,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 200 transitions, 1907 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 20:10:54,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:10:54,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:10:54,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:10:54,885 INFO L124 PetriNetUnfolderBase]: 562/1016 cut-off events. [2024-06-27 20:10:54,885 INFO L125 PetriNetUnfolderBase]: For 65305/65305 co-relation queries the response was YES. [2024-06-27 20:10:54,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5572 conditions, 1016 events. 562/1016 cut-off events. For 65305/65305 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5234 event pairs, 78 based on Foata normal form. 10/1025 useless extension candidates. Maximal degree in co-relation 5459. Up to 845 conditions per place. [2024-06-27 20:10:54,892 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 180 selfloop transitions, 32 changer transitions 9/223 dead transitions. [2024-06-27 20:10:54,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 223 transitions, 2456 flow [2024-06-27 20:10:54,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:10:54,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:10:54,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-27 20:10:54,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3393939393939394 [2024-06-27 20:10:54,894 INFO L175 Difference]: Start difference. First operand has 243 places, 200 transitions, 1907 flow. Second operand 11 states and 112 transitions. [2024-06-27 20:10:54,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 223 transitions, 2456 flow [2024-06-27 20:10:55,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 223 transitions, 2216 flow, removed 16 selfloop flow, removed 12 redundant places. [2024-06-27 20:10:55,009 INFO L231 Difference]: Finished difference. Result has 242 places, 198 transitions, 1715 flow [2024-06-27 20:10:55,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1667, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1715, PETRI_PLACES=242, PETRI_TRANSITIONS=198} [2024-06-27 20:10:55,009 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 213 predicate places. [2024-06-27 20:10:55,009 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 198 transitions, 1715 flow [2024-06-27 20:10:55,010 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 20:10:55,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:10:55,010 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 20:10:55,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 20:10:55,010 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 20:10:55,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:10:55,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1661569209, now seen corresponding path program 5 times [2024-06-27 20:10:55,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:10:55,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161010008] [2024-06-27 20:10:55,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:10:55,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:10:55,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:10:55,784 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 20:10:55,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:10:55,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161010008] [2024-06-27 20:10:55,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161010008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:10:55,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:10:55,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:10:55,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206950041] [2024-06-27 20:10:55,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:10:55,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:10:55,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:10:55,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:10:55,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:10:55,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:10:55,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 198 transitions, 1715 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 20:10:55,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:10:55,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:10:55,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:10:56,174 INFO L124 PetriNetUnfolderBase]: 540/974 cut-off events. [2024-06-27 20:10:56,174 INFO L125 PetriNetUnfolderBase]: For 43518/43518 co-relation queries the response was YES. [2024-06-27 20:10:56,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5177 conditions, 974 events. 540/974 cut-off events. For 43518/43518 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 4979 event pairs, 71 based on Foata normal form. 2/975 useless extension candidates. Maximal degree in co-relation 5066. Up to 838 conditions per place. [2024-06-27 20:10:56,182 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 171 selfloop transitions, 40 changer transitions 0/213 dead transitions. [2024-06-27 20:10:56,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 213 transitions, 2207 flow [2024-06-27 20:10:56,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:10:56,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:10:56,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 99 transitions. [2024-06-27 20:10:56,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33 [2024-06-27 20:10:56,183 INFO L175 Difference]: Start difference. First operand has 242 places, 198 transitions, 1715 flow. Second operand 10 states and 99 transitions. [2024-06-27 20:10:56,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 213 transitions, 2207 flow [2024-06-27 20:10:56,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 213 transitions, 2089 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-27 20:10:56,302 INFO L231 Difference]: Finished difference. Result has 239 places, 199 transitions, 1715 flow [2024-06-27 20:10:56,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1597, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1715, PETRI_PLACES=239, PETRI_TRANSITIONS=199} [2024-06-27 20:10:56,302 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 210 predicate places. [2024-06-27 20:10:56,303 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 199 transitions, 1715 flow [2024-06-27 20:10:56,303 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 20:10:56,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:10:56,303 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 20:10:56,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 20:10:56,303 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 20:10:56,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:10:56,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1832271639, now seen corresponding path program 6 times [2024-06-27 20:10:56,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:10:56,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315203708] [2024-06-27 20:10:56,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:10:56,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:10:56,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:10:57,114 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 20:10:57,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:10:57,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315203708] [2024-06-27 20:10:57,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315203708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:10:57,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:10:57,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:10:57,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888823414] [2024-06-27 20:10:57,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:10:57,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:10:57,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:10:57,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:10:57,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:10:57,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:10:57,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 199 transitions, 1715 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 20:10:57,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:10:57,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:10:57,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:10:57,497 INFO L124 PetriNetUnfolderBase]: 544/982 cut-off events. [2024-06-27 20:10:57,497 INFO L125 PetriNetUnfolderBase]: For 44178/44178 co-relation queries the response was YES. [2024-06-27 20:10:57,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5166 conditions, 982 events. 544/982 cut-off events. For 44178/44178 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5038 event pairs, 83 based on Foata normal form. 2/983 useless extension candidates. Maximal degree in co-relation 5057. Up to 844 conditions per place. [2024-06-27 20:10:57,505 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 171 selfloop transitions, 43 changer transitions 0/216 dead transitions. [2024-06-27 20:10:57,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 216 transitions, 2251 flow [2024-06-27 20:10:57,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:10:57,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:10:57,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-27 20:10:57,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-27 20:10:57,506 INFO L175 Difference]: Start difference. First operand has 239 places, 199 transitions, 1715 flow. Second operand 10 states and 105 transitions. [2024-06-27 20:10:57,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 216 transitions, 2251 flow [2024-06-27 20:10:57,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 216 transitions, 2143 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 20:10:57,660 INFO L231 Difference]: Finished difference. Result has 241 places, 200 transitions, 1734 flow [2024-06-27 20:10:57,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1607, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1734, PETRI_PLACES=241, PETRI_TRANSITIONS=200} [2024-06-27 20:10:57,660 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 212 predicate places. [2024-06-27 20:10:57,661 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 200 transitions, 1734 flow [2024-06-27 20:10:57,661 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 20:10:57,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:10:57,661 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 20:10:57,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 20:10:57,661 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 20:10:57,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:10:57,662 INFO L85 PathProgramCache]: Analyzing trace with hash -685256509, now seen corresponding path program 7 times [2024-06-27 20:10:57,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:10:57,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081972517] [2024-06-27 20:10:57,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:10:57,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:10:57,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:10:58,534 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 20:10:58,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:10:58,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081972517] [2024-06-27 20:10:58,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081972517] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:10:58,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:10:58,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:10:58,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407872645] [2024-06-27 20:10:58,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:10:58,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:10:58,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:10:58,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:10:58,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:10:58,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:10:58,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 200 transitions, 1734 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 20:10:58,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:10:58,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:10:58,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:10:58,975 INFO L124 PetriNetUnfolderBase]: 548/990 cut-off events. [2024-06-27 20:10:58,975 INFO L125 PetriNetUnfolderBase]: For 45710/45710 co-relation queries the response was YES. [2024-06-27 20:10:58,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5249 conditions, 990 events. 548/990 cut-off events. For 45710/45710 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5125 event pairs, 73 based on Foata normal form. 2/991 useless extension candidates. Maximal degree in co-relation 5139. Up to 661 conditions per place. [2024-06-27 20:10:58,983 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 143 selfloop transitions, 71 changer transitions 0/216 dead transitions. [2024-06-27 20:10:58,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 216 transitions, 2270 flow [2024-06-27 20:10:58,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:10:58,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:10:58,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-27 20:10:58,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35333333333333333 [2024-06-27 20:10:58,984 INFO L175 Difference]: Start difference. First operand has 241 places, 200 transitions, 1734 flow. Second operand 10 states and 106 transitions. [2024-06-27 20:10:58,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 216 transitions, 2270 flow [2024-06-27 20:10:59,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 216 transitions, 2155 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-27 20:10:59,124 INFO L231 Difference]: Finished difference. Result has 243 places, 201 transitions, 1804 flow [2024-06-27 20:10:59,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1619, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1804, PETRI_PLACES=243, PETRI_TRANSITIONS=201} [2024-06-27 20:10:59,124 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 214 predicate places. [2024-06-27 20:10:59,124 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 201 transitions, 1804 flow [2024-06-27 20:10:59,124 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 20:10:59,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:10:59,124 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 20:10:59,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 20:10:59,125 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 20:10:59,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:10:59,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1832266989, now seen corresponding path program 8 times [2024-06-27 20:10:59,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:10:59,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115226817] [2024-06-27 20:10:59,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:10:59,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:10:59,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:10:59,864 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 20:10:59,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:10:59,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115226817] [2024-06-27 20:10:59,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115226817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:10:59,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:10:59,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:10:59,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114907970] [2024-06-27 20:10:59,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:10:59,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:10:59,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:10:59,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:10:59,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:10:59,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:10:59,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 201 transitions, 1804 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 20:10:59,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:10:59,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:10:59,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:11:00,268 INFO L124 PetriNetUnfolderBase]: 588/1070 cut-off events. [2024-06-27 20:11:00,268 INFO L125 PetriNetUnfolderBase]: For 84297/84297 co-relation queries the response was YES. [2024-06-27 20:11:00,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6670 conditions, 1070 events. 588/1070 cut-off events. For 84297/84297 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5580 event pairs, 103 based on Foata normal form. 2/1071 useless extension candidates. Maximal degree in co-relation 6559. Up to 834 conditions per place. [2024-06-27 20:11:00,277 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 178 selfloop transitions, 44 changer transitions 0/224 dead transitions. [2024-06-27 20:11:00,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 224 transitions, 2602 flow [2024-06-27 20:11:00,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:11:00,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:11:00,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-27 20:11:00,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-27 20:11:00,278 INFO L175 Difference]: Start difference. First operand has 243 places, 201 transitions, 1804 flow. Second operand 10 states and 110 transitions. [2024-06-27 20:11:00,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 224 transitions, 2602 flow [2024-06-27 20:11:00,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 224 transitions, 2429 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-27 20:11:00,485 INFO L231 Difference]: Finished difference. Result has 246 places, 203 transitions, 1814 flow [2024-06-27 20:11:00,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1631, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1814, PETRI_PLACES=246, PETRI_TRANSITIONS=203} [2024-06-27 20:11:00,485 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 217 predicate places. [2024-06-27 20:11:00,485 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 203 transitions, 1814 flow [2024-06-27 20:11:00,485 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 20:11:00,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:11:00,485 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 20:11:00,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 20:11:00,485 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 20:11:00,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:11:00,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1661449239, now seen corresponding path program 9 times [2024-06-27 20:11:00,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:11:00,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158362661] [2024-06-27 20:11:00,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:11:00,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:11:00,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:11:01,220 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 20:11:01,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:11:01,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158362661] [2024-06-27 20:11:01,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158362661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:11:01,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:11:01,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:11:01,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465972248] [2024-06-27 20:11:01,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:11:01,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:11:01,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:11:01,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:11:01,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:11:01,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:11:01,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 203 transitions, 1814 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 20:11:01,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:11:01,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:11:01,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:11:01,647 INFO L124 PetriNetUnfolderBase]: 592/1078 cut-off events. [2024-06-27 20:11:01,647 INFO L125 PetriNetUnfolderBase]: For 87345/87345 co-relation queries the response was YES. [2024-06-27 20:11:01,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6724 conditions, 1078 events. 592/1078 cut-off events. For 87345/87345 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5651 event pairs, 91 based on Foata normal form. 2/1079 useless extension candidates. Maximal degree in co-relation 6611. Up to 649 conditions per place. [2024-06-27 20:11:01,656 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 150 selfloop transitions, 72 changer transitions 0/224 dead transitions. [2024-06-27 20:11:01,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 224 transitions, 2580 flow [2024-06-27 20:11:01,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:11:01,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:11:01,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-27 20:11:01,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-27 20:11:01,657 INFO L175 Difference]: Start difference. First operand has 246 places, 203 transitions, 1814 flow. Second operand 10 states and 110 transitions. [2024-06-27 20:11:01,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 224 transitions, 2580 flow [2024-06-27 20:11:01,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 224 transitions, 2457 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-27 20:11:01,875 INFO L231 Difference]: Finished difference. Result has 249 places, 204 transitions, 1883 flow [2024-06-27 20:11:01,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1691, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1883, PETRI_PLACES=249, PETRI_TRANSITIONS=204} [2024-06-27 20:11:01,875 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 220 predicate places. [2024-06-27 20:11:01,876 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 204 transitions, 1883 flow [2024-06-27 20:11:01,876 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 20:11:01,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:11:01,876 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 20:11:01,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 20:11:01,876 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 20:11:01,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:11:01,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1666217783, now seen corresponding path program 2 times [2024-06-27 20:11:01,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:11:01,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249618164] [2024-06-27 20:11:01,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:11:01,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:11:01,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:11:02,765 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 20:11:02,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:11:02,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249618164] [2024-06-27 20:11:02,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249618164] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:11:02,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:11:02,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:11:02,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10119035] [2024-06-27 20:11:02,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:11:02,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:11:02,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:11:02,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:11:02,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:11:02,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:11:02,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 204 transitions, 1883 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 20:11:02,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:11:02,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:11:02,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:11:03,302 INFO L124 PetriNetUnfolderBase]: 608/1114 cut-off events. [2024-06-27 20:11:03,302 INFO L125 PetriNetUnfolderBase]: For 113368/113368 co-relation queries the response was YES. [2024-06-27 20:11:03,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6897 conditions, 1114 events. 608/1114 cut-off events. For 113368/113368 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 5908 event pairs, 101 based on Foata normal form. 10/1123 useless extension candidates. Maximal degree in co-relation 6783. Up to 934 conditions per place. [2024-06-27 20:11:03,312 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 173 selfloop transitions, 38 changer transitions 11/224 dead transitions. [2024-06-27 20:11:03,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 224 transitions, 2415 flow [2024-06-27 20:11:03,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:11:03,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:11:03,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-27 20:11:03,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33636363636363636 [2024-06-27 20:11:03,313 INFO L175 Difference]: Start difference. First operand has 249 places, 204 transitions, 1883 flow. Second operand 11 states and 111 transitions. [2024-06-27 20:11:03,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 224 transitions, 2415 flow [2024-06-27 20:11:03,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 224 transitions, 2233 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-27 20:11:03,596 INFO L231 Difference]: Finished difference. Result has 252 places, 201 transitions, 1762 flow [2024-06-27 20:11:03,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1701, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1762, PETRI_PLACES=252, PETRI_TRANSITIONS=201} [2024-06-27 20:11:03,596 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 223 predicate places. [2024-06-27 20:11:03,597 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 201 transitions, 1762 flow [2024-06-27 20:11:03,597 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 20:11:03,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:11:03,597 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 20:11:03,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 20:11:03,597 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 20:11:03,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:11:03,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1832451563, now seen corresponding path program 3 times [2024-06-27 20:11:03,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:11:03,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874817795] [2024-06-27 20:11:03,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:11:03,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:11:03,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:11:04,436 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 20:11:04,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:11:04,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874817795] [2024-06-27 20:11:04,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874817795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:11:04,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:11:04,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:11:04,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282389751] [2024-06-27 20:11:04,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:11:04,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:11:04,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:11:04,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:11:04,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:11:04,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:11:04,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 201 transitions, 1762 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 20:11:04,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:11:04,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:11:04,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:11:04,948 INFO L124 PetriNetUnfolderBase]: 598/1100 cut-off events. [2024-06-27 20:11:04,948 INFO L125 PetriNetUnfolderBase]: For 113998/113998 co-relation queries the response was YES. [2024-06-27 20:11:04,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6694 conditions, 1100 events. 598/1100 cut-off events. For 113998/113998 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5854 event pairs, 109 based on Foata normal form. 10/1109 useless extension candidates. Maximal degree in co-relation 6579. Up to 910 conditions per place. [2024-06-27 20:11:04,957 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 168 selfloop transitions, 32 changer transitions 21/223 dead transitions. [2024-06-27 20:11:04,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 223 transitions, 2338 flow [2024-06-27 20:11:04,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:11:04,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:11:04,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-27 20:11:04,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3575757575757576 [2024-06-27 20:11:04,958 INFO L175 Difference]: Start difference. First operand has 252 places, 201 transitions, 1762 flow. Second operand 11 states and 118 transitions. [2024-06-27 20:11:04,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 223 transitions, 2338 flow [2024-06-27 20:11:05,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 223 transitions, 2208 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-27 20:11:05,194 INFO L231 Difference]: Finished difference. Result has 249 places, 190 transitions, 1603 flow [2024-06-27 20:11:05,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1632, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1603, PETRI_PLACES=249, PETRI_TRANSITIONS=190} [2024-06-27 20:11:05,195 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 220 predicate places. [2024-06-27 20:11:05,195 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 190 transitions, 1603 flow [2024-06-27 20:11:05,195 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 20:11:05,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:11:05,195 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 20:11:05,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 20:11:05,195 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 20:11:05,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:11:05,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1838700729, now seen corresponding path program 10 times [2024-06-27 20:11:05,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:11:05,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916380979] [2024-06-27 20:11:05,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:11:05,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:11:05,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:11:05,910 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 20:11:05,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:11:05,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916380979] [2024-06-27 20:11:05,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916380979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:11:05,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:11:05,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:11:05,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544348948] [2024-06-27 20:11:05,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:11:05,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:11:05,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:11:05,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:11:05,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:11:06,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:11:06,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 190 transitions, 1603 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 20:11:06,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:11:06,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:11:06,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:11:06,341 INFO L124 PetriNetUnfolderBase]: 530/980 cut-off events. [2024-06-27 20:11:06,341 INFO L125 PetriNetUnfolderBase]: For 80110/80110 co-relation queries the response was YES. [2024-06-27 20:11:06,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5157 conditions, 980 events. 530/980 cut-off events. For 80110/80110 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5127 event pairs, 89 based on Foata normal form. 12/991 useless extension candidates. Maximal degree in co-relation 5043. Up to 826 conditions per place. [2024-06-27 20:11:06,348 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 171 selfloop transitions, 31 changer transitions 6/210 dead transitions. [2024-06-27 20:11:06,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 210 transitions, 2147 flow [2024-06-27 20:11:06,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:11:06,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:11:06,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-27 20:11:06,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36 [2024-06-27 20:11:06,349 INFO L175 Difference]: Start difference. First operand has 249 places, 190 transitions, 1603 flow. Second operand 10 states and 108 transitions. [2024-06-27 20:11:06,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 210 transitions, 2147 flow [2024-06-27 20:11:06,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 210 transitions, 2029 flow, removed 20 selfloop flow, removed 14 redundant places. [2024-06-27 20:11:06,474 INFO L231 Difference]: Finished difference. Result has 238 places, 188 transitions, 1536 flow [2024-06-27 20:11:06,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1489, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1536, PETRI_PLACES=238, PETRI_TRANSITIONS=188} [2024-06-27 20:11:06,474 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 209 predicate places. [2024-06-27 20:11:06,474 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 188 transitions, 1536 flow [2024-06-27 20:11:06,474 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 20:11:06,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:11:06,474 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 20:11:06,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 20:11:06,475 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 20:11:06,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:11:06,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1838707673, now seen corresponding path program 4 times [2024-06-27 20:11:06,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:11:06,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826296753] [2024-06-27 20:11:06,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:11:06,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:11:06,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:11:07,312 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 20:11:07,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:11:07,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826296753] [2024-06-27 20:11:07,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826296753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:11:07,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:11:07,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:11:07,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932622922] [2024-06-27 20:11:07,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:11:07,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:11:07,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:11:07,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:11:07,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:11:07,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:11:07,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 188 transitions, 1536 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 20:11:07,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:11:07,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:11:07,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:11:07,757 INFO L124 PetriNetUnfolderBase]: 530/992 cut-off events. [2024-06-27 20:11:07,757 INFO L125 PetriNetUnfolderBase]: For 65988/65988 co-relation queries the response was YES. [2024-06-27 20:11:07,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5021 conditions, 992 events. 530/992 cut-off events. For 65988/65988 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5260 event pairs, 95 based on Foata normal form. 10/1001 useless extension candidates. Maximal degree in co-relation 4911. Up to 810 conditions per place. [2024-06-27 20:11:07,764 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 166 selfloop transitions, 20 changer transitions 21/209 dead transitions. [2024-06-27 20:11:07,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 209 transitions, 2076 flow [2024-06-27 20:11:07,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:11:07,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:11:07,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-27 20:11:07,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34545454545454546 [2024-06-27 20:11:07,765 INFO L175 Difference]: Start difference. First operand has 238 places, 188 transitions, 1536 flow. Second operand 11 states and 114 transitions. [2024-06-27 20:11:07,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 209 transitions, 2076 flow [2024-06-27 20:11:07,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 209 transitions, 2009 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 20:11:07,896 INFO L231 Difference]: Finished difference. Result has 240 places, 177 transitions, 1422 flow [2024-06-27 20:11:07,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1469, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1422, PETRI_PLACES=240, PETRI_TRANSITIONS=177} [2024-06-27 20:11:07,897 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 211 predicate places. [2024-06-27 20:11:07,897 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 177 transitions, 1422 flow [2024-06-27 20:11:07,897 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 20:11:07,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:11:07,897 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 20:11:07,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 20:11:07,897 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 20:11:07,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:11:07,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1838946683, now seen corresponding path program 5 times [2024-06-27 20:11:07,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:11:07,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971915322] [2024-06-27 20:11:07,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:11:07,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:11:07,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:11:08,487 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 20:11:08,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:11:08,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971915322] [2024-06-27 20:11:08,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971915322] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:11:08,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:11:08,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:11:08,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553237147] [2024-06-27 20:11:08,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:11:08,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:11:08,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:11:08,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:11:08,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:11:08,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:11:08,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 177 transitions, 1422 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 20:11:08,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:11:08,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:11:08,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:11:08,823 INFO L124 PetriNetUnfolderBase]: 478/896 cut-off events. [2024-06-27 20:11:08,824 INFO L125 PetriNetUnfolderBase]: For 61541/61541 co-relation queries the response was YES. [2024-06-27 20:11:08,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4602 conditions, 896 events. 478/896 cut-off events. For 61541/61541 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4601 event pairs, 85 based on Foata normal form. 8/903 useless extension candidates. Maximal degree in co-relation 4491. Up to 790 conditions per place. [2024-06-27 20:11:08,831 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 162 selfloop transitions, 16 changer transitions 15/195 dead transitions. [2024-06-27 20:11:08,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 195 transitions, 1914 flow [2024-06-27 20:11:08,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:11:08,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:11:08,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-27 20:11:08,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33666666666666667 [2024-06-27 20:11:08,832 INFO L175 Difference]: Start difference. First operand has 240 places, 177 transitions, 1422 flow. Second operand 10 states and 101 transitions. [2024-06-27 20:11:08,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 195 transitions, 1914 flow [2024-06-27 20:11:08,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 195 transitions, 1825 flow, removed 11 selfloop flow, removed 19 redundant places. [2024-06-27 20:11:08,962 INFO L231 Difference]: Finished difference. Result has 224 places, 171 transitions, 1341 flow [2024-06-27 20:11:08,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1339, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1341, PETRI_PLACES=224, PETRI_TRANSITIONS=171} [2024-06-27 20:11:08,962 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 195 predicate places. [2024-06-27 20:11:08,962 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 171 transitions, 1341 flow [2024-06-27 20:11:08,963 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 20:11:08,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:11:08,963 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 20:11:08,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 20:11:08,963 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 20:11:08,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:11:08,963 INFO L85 PathProgramCache]: Analyzing trace with hash -480123421, now seen corresponding path program 11 times [2024-06-27 20:11:08,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:11:08,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994987485] [2024-06-27 20:11:08,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:11:08,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:11:08,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:11:09,744 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 20:11:09,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:11:09,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994987485] [2024-06-27 20:11:09,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994987485] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:11:09,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:11:09,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:11:09,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559739231] [2024-06-27 20:11:09,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:11:09,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:11:09,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:11:09,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:11:09,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:11:09,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:11:09,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 171 transitions, 1341 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 20:11:09,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:11:09,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:11:09,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:11:10,135 INFO L124 PetriNetUnfolderBase]: 454/845 cut-off events. [2024-06-27 20:11:10,135 INFO L125 PetriNetUnfolderBase]: For 39786/39786 co-relation queries the response was YES. [2024-06-27 20:11:10,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4273 conditions, 845 events. 454/845 cut-off events. For 39786/39786 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4289 event pairs, 82 based on Foata normal form. 2/846 useless extension candidates. Maximal degree in co-relation 4168. Up to 644 conditions per place. [2024-06-27 20:11:10,141 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 129 selfloop transitions, 56 changer transitions 0/187 dead transitions. [2024-06-27 20:11:10,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 187 transitions, 1817 flow [2024-06-27 20:11:10,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:11:10,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:11:10,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-27 20:11:10,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36333333333333334 [2024-06-27 20:11:10,142 INFO L175 Difference]: Start difference. First operand has 224 places, 171 transitions, 1341 flow. Second operand 10 states and 109 transitions. [2024-06-27 20:11:10,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 187 transitions, 1817 flow [2024-06-27 20:11:10,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 187 transitions, 1775 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-27 20:11:10,251 INFO L231 Difference]: Finished difference. Result has 217 places, 172 transitions, 1451 flow [2024-06-27 20:11:10,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1299, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1451, PETRI_PLACES=217, PETRI_TRANSITIONS=172} [2024-06-27 20:11:10,251 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 188 predicate places. [2024-06-27 20:11:10,252 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 172 transitions, 1451 flow [2024-06-27 20:11:10,252 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 20:11:10,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:11:10,252 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 20:11:10,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 20:11:10,252 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 20:11:10,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:11:10,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1289250933, now seen corresponding path program 12 times [2024-06-27 20:11:10,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:11:10,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957248528] [2024-06-27 20:11:10,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:11:10,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:11:10,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:11:11,026 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 20:11:11,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:11:11,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957248528] [2024-06-27 20:11:11,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957248528] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:11:11,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:11:11,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:11:11,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132282920] [2024-06-27 20:11:11,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:11:11,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:11:11,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:11:11,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:11:11,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:11:11,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:11:11,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 172 transitions, 1451 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 20:11:11,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:11:11,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:11:11,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:11:11,406 INFO L124 PetriNetUnfolderBase]: 494/925 cut-off events. [2024-06-27 20:11:11,407 INFO L125 PetriNetUnfolderBase]: For 67920/67920 co-relation queries the response was YES. [2024-06-27 20:11:11,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5627 conditions, 925 events. 494/925 cut-off events. For 67920/67920 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4729 event pairs, 96 based on Foata normal form. 2/926 useless extension candidates. Maximal degree in co-relation 5525. Up to 628 conditions per place. [2024-06-27 20:11:11,413 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 134 selfloop transitions, 58 changer transitions 0/194 dead transitions. [2024-06-27 20:11:11,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 194 transitions, 2163 flow [2024-06-27 20:11:11,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:11:11,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:11:11,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-27 20:11:11,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38 [2024-06-27 20:11:11,414 INFO L175 Difference]: Start difference. First operand has 217 places, 172 transitions, 1451 flow. Second operand 10 states and 114 transitions. [2024-06-27 20:11:11,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 194 transitions, 2163 flow [2024-06-27 20:11:11,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 194 transitions, 2021 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-27 20:11:11,545 INFO L231 Difference]: Finished difference. Result has 220 places, 174 transitions, 1514 flow [2024-06-27 20:11:11,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1309, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1514, PETRI_PLACES=220, PETRI_TRANSITIONS=174} [2024-06-27 20:11:11,545 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 191 predicate places. [2024-06-27 20:11:11,545 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 174 transitions, 1514 flow [2024-06-27 20:11:11,545 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 20:11:11,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:11:11,545 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 20:11:11,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 20:11:11,545 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 20:11:11,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:11:11,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1714382717, now seen corresponding path program 6 times [2024-06-27 20:11:11,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:11:11,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595455419] [2024-06-27 20:11:11,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:11:11,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:11:11,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:11:12,269 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 20:11:12,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:11:12,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595455419] [2024-06-27 20:11:12,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595455419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:11:12,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:11:12,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:11:12,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642051719] [2024-06-27 20:11:12,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:11:12,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:11:12,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:11:12,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:11:12,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:11:12,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:11:12,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 174 transitions, 1514 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 20:11:12,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:11:12,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:11:12,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:11:12,608 INFO L124 PetriNetUnfolderBase]: 510/961 cut-off events. [2024-06-27 20:11:12,608 INFO L125 PetriNetUnfolderBase]: For 88068/88068 co-relation queries the response was YES. [2024-06-27 20:11:12,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5783 conditions, 961 events. 510/961 cut-off events. For 88068/88068 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4984 event pairs, 104 based on Foata normal form. 10/970 useless extension candidates. Maximal degree in co-relation 5679. Up to 714 conditions per place. [2024-06-27 20:11:12,615 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 127 selfloop transitions, 50 changer transitions 16/195 dead transitions. [2024-06-27 20:11:12,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 195 transitions, 2026 flow [2024-06-27 20:11:12,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:11:12,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:11:12,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-27 20:11:12,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3696969696969697 [2024-06-27 20:11:12,616 INFO L175 Difference]: Start difference. First operand has 220 places, 174 transitions, 1514 flow. Second operand 11 states and 122 transitions. [2024-06-27 20:11:12,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 195 transitions, 2026 flow [2024-06-27 20:11:12,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 195 transitions, 1877 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-27 20:11:12,759 INFO L231 Difference]: Finished difference. Result has 224 places, 168 transitions, 1430 flow [2024-06-27 20:11:12,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1365, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1430, PETRI_PLACES=224, PETRI_TRANSITIONS=168} [2024-06-27 20:11:12,760 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 195 predicate places. [2024-06-27 20:11:12,760 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 168 transitions, 1430 flow [2024-06-27 20:11:12,760 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 20:11:12,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:11:12,760 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 20:11:12,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 20:11:12,760 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 20:11:12,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:11:12,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1720631883, now seen corresponding path program 13 times [2024-06-27 20:11:12,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:11:12,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709326723] [2024-06-27 20:11:12,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:11:12,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:11:12,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:11:13,547 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 20:11:13,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:11:13,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709326723] [2024-06-27 20:11:13,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709326723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:11:13,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:11:13,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:11:13,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197082578] [2024-06-27 20:11:13,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:11:13,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:11:13,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:11:13,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:11:13,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:11:13,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:11:13,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 168 transitions, 1430 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 20:11:13,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:11:13,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:11:13,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:11:13,898 INFO L124 PetriNetUnfolderBase]: 494/937 cut-off events. [2024-06-27 20:11:13,898 INFO L125 PetriNetUnfolderBase]: For 95165/95165 co-relation queries the response was YES. [2024-06-27 20:11:13,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5656 conditions, 937 events. 494/937 cut-off events. For 95165/95165 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4861 event pairs, 106 based on Foata normal form. 12/948 useless extension candidates. Maximal degree in co-relation 5551. Up to 710 conditions per place. [2024-06-27 20:11:13,905 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 135 selfloop transitions, 46 changer transitions 5/188 dead transitions. [2024-06-27 20:11:13,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 188 transitions, 1950 flow [2024-06-27 20:11:13,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:11:13,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:11:13,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-27 20:11:13,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38 [2024-06-27 20:11:13,906 INFO L175 Difference]: Start difference. First operand has 224 places, 168 transitions, 1430 flow. Second operand 10 states and 114 transitions. [2024-06-27 20:11:13,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 188 transitions, 1950 flow [2024-06-27 20:11:14,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 188 transitions, 1826 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-06-27 20:11:14,060 INFO L231 Difference]: Finished difference. Result has 217 places, 168 transitions, 1428 flow [2024-06-27 20:11:14,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1314, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1428, PETRI_PLACES=217, PETRI_TRANSITIONS=168} [2024-06-27 20:11:14,060 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 188 predicate places. [2024-06-27 20:11:14,060 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 168 transitions, 1428 flow [2024-06-27 20:11:14,060 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 20:11:14,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:11:14,060 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 20:11:14,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 20:11:14,061 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 20:11:14,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:11:14,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1295691617, now seen corresponding path program 7 times [2024-06-27 20:11:14,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:11:14,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623917418] [2024-06-27 20:11:14,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:11:14,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:11:14,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:11:14,776 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 20:11:14,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:11:14,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623917418] [2024-06-27 20:11:14,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623917418] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:11:14,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:11:14,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:11:14,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670147919] [2024-06-27 20:11:14,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:11:14,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:11:14,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:11:14,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:11:14,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:11:14,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:11:14,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 168 transitions, 1428 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 20:11:14,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:11:14,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:11:14,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:11:15,103 INFO L124 PetriNetUnfolderBase]: 498/953 cut-off events. [2024-06-27 20:11:15,103 INFO L125 PetriNetUnfolderBase]: For 82307/82307 co-relation queries the response was YES. [2024-06-27 20:11:15,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5569 conditions, 953 events. 498/953 cut-off events. For 82307/82307 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4979 event pairs, 112 based on Foata normal form. 10/962 useless extension candidates. Maximal degree in co-relation 5467. Up to 700 conditions per place. [2024-06-27 20:11:15,109 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 130 selfloop transitions, 40 changer transitions 16/188 dead transitions. [2024-06-27 20:11:15,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 188 transitions, 1918 flow [2024-06-27 20:11:15,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:11:15,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:11:15,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-27 20:11:15,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-27 20:11:15,110 INFO L175 Difference]: Start difference. First operand has 217 places, 168 transitions, 1428 flow. Second operand 11 states and 120 transitions. [2024-06-27 20:11:15,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 188 transitions, 1918 flow [2024-06-27 20:11:15,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 188 transitions, 1808 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 20:11:15,271 INFO L231 Difference]: Finished difference. Result has 220 places, 162 transitions, 1361 flow [2024-06-27 20:11:15,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1318, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1361, PETRI_PLACES=220, PETRI_TRANSITIONS=162} [2024-06-27 20:11:15,271 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 191 predicate places. [2024-06-27 20:11:15,272 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 162 transitions, 1361 flow [2024-06-27 20:11:15,272 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 20:11:15,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:11:15,272 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 20:11:15,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 20:11:15,272 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 20:11:15,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:11:15,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1720877837, now seen corresponding path program 8 times [2024-06-27 20:11:15,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:11:15,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226815473] [2024-06-27 20:11:15,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:11:15,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:11:15,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:11:15,855 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 20:11:15,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:11:15,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226815473] [2024-06-27 20:11:15,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226815473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:11:15,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:11:15,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:11:15,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001025192] [2024-06-27 20:11:15,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:11:15,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:11:15,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:11:15,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:11:15,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:11:15,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:11:15,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 162 transitions, 1361 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 20:11:15,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:11:15,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:11:15,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:11:16,178 INFO L124 PetriNetUnfolderBase]: 464/887 cut-off events. [2024-06-27 20:11:16,178 INFO L125 PetriNetUnfolderBase]: For 79393/79393 co-relation queries the response was YES. [2024-06-27 20:11:16,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5306 conditions, 887 events. 464/887 cut-off events. For 79393/79393 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4544 event pairs, 104 based on Foata normal form. 8/894 useless extension candidates. Maximal degree in co-relation 5203. Up to 690 conditions per place. [2024-06-27 20:11:16,184 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 127 selfloop transitions, 38 changer transitions 12/179 dead transitions. [2024-06-27 20:11:16,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 179 transitions, 1815 flow [2024-06-27 20:11:16,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:11:16,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:11:16,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-27 20:11:16,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3566666666666667 [2024-06-27 20:11:16,185 INFO L175 Difference]: Start difference. First operand has 220 places, 162 transitions, 1361 flow. Second operand 10 states and 107 transitions. [2024-06-27 20:11:16,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 179 transitions, 1815 flow [2024-06-27 20:11:16,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 179 transitions, 1725 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-27 20:11:16,346 INFO L231 Difference]: Finished difference. Result has 213 places, 159 transitions, 1334 flow [2024-06-27 20:11:16,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1271, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1334, PETRI_PLACES=213, PETRI_TRANSITIONS=159} [2024-06-27 20:11:16,347 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 184 predicate places. [2024-06-27 20:11:16,347 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 159 transitions, 1334 flow [2024-06-27 20:11:16,347 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 20:11:16,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:11:16,347 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 20:11:16,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 20:11:16,348 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 20:11:16,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:11:16,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1377678255, now seen corresponding path program 9 times [2024-06-27 20:11:16,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:11:16,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222943882] [2024-06-27 20:11:16,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:11:16,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:11:16,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:11:16,973 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 20:11:16,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:11:16,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222943882] [2024-06-27 20:11:16,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222943882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:11:16,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:11:16,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:11:16,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886622346] [2024-06-27 20:11:16,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:11:16,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:11:16,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:11:16,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:11:16,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:11:17,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:11:17,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 159 transitions, 1334 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 20:11:17,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:11:17,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:11:17,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:11:17,354 INFO L124 PetriNetUnfolderBase]: 485/929 cut-off events. [2024-06-27 20:11:17,354 INFO L125 PetriNetUnfolderBase]: For 94212/94212 co-relation queries the response was YES. [2024-06-27 20:11:17,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6030 conditions, 929 events. 485/929 cut-off events. For 94212/94212 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4766 event pairs, 136 based on Foata normal form. 8/936 useless extension candidates. Maximal degree in co-relation 5930. Up to 664 conditions per place. [2024-06-27 20:11:17,360 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 152 selfloop transitions, 17 changer transitions 10/181 dead transitions. [2024-06-27 20:11:17,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 181 transitions, 1934 flow [2024-06-27 20:11:17,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:11:17,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:11:17,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-27 20:11:17,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34545454545454546 [2024-06-27 20:11:17,360 INFO L175 Difference]: Start difference. First operand has 213 places, 159 transitions, 1334 flow. Second operand 11 states and 114 transitions. [2024-06-27 20:11:17,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 181 transitions, 1934 flow [2024-06-27 20:11:17,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 181 transitions, 1846 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-27 20:11:17,523 INFO L231 Difference]: Finished difference. Result has 210 places, 156 transitions, 1273 flow [2024-06-27 20:11:17,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1252, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1273, PETRI_PLACES=210, PETRI_TRANSITIONS=156} [2024-06-27 20:11:17,523 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 181 predicate places. [2024-06-27 20:11:17,523 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 156 transitions, 1273 flow [2024-06-27 20:11:17,523 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 20:11:17,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:11:17,523 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 20:11:17,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 20:11:17,523 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 20:11:17,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:11:17,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1367558925, now seen corresponding path program 10 times [2024-06-27 20:11:17,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:11:17,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886900561] [2024-06-27 20:11:17,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:11:17,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:11:17,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:11:18,131 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 20:11:18,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:11:18,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886900561] [2024-06-27 20:11:18,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886900561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:11:18,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:11:18,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:11:18,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258929650] [2024-06-27 20:11:18,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:11:18,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:11:18,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:11:18,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:11:18,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:11:18,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:11:18,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 156 transitions, 1273 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 20:11:18,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:11:18,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:11:18,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:11:18,516 INFO L124 PetriNetUnfolderBase]: 475/911 cut-off events. [2024-06-27 20:11:18,516 INFO L125 PetriNetUnfolderBase]: For 88719/88719 co-relation queries the response was YES. [2024-06-27 20:11:18,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5861 conditions, 911 events. 475/911 cut-off events. For 88719/88719 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4650 event pairs, 130 based on Foata normal form. 8/918 useless extension candidates. Maximal degree in co-relation 5763. Up to 664 conditions per place. [2024-06-27 20:11:18,524 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 150 selfloop transitions, 15 changer transitions 9/176 dead transitions. [2024-06-27 20:11:18,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 176 transitions, 1855 flow [2024-06-27 20:11:18,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:11:18,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:11:18,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-27 20:11:18,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3466666666666667 [2024-06-27 20:11:18,525 INFO L175 Difference]: Start difference. First operand has 210 places, 156 transitions, 1273 flow. Second operand 10 states and 104 transitions. [2024-06-27 20:11:18,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 176 transitions, 1855 flow [2024-06-27 20:11:18,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 176 transitions, 1815 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-27 20:11:18,705 INFO L231 Difference]: Finished difference. Result has 206 places, 152 transitions, 1238 flow [2024-06-27 20:11:18,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1239, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1238, PETRI_PLACES=206, PETRI_TRANSITIONS=152} [2024-06-27 20:11:18,705 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 177 predicate places. [2024-06-27 20:11:18,705 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 152 transitions, 1238 flow [2024-06-27 20:11:18,705 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 20:11:18,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:11:18,705 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 20:11:18,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 20:11:18,705 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 20:11:18,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:11:18,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1082450685, now seen corresponding path program 11 times [2024-06-27 20:11:18,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:11:18,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436324992] [2024-06-27 20:11:18,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:11:18,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:11:18,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:11:19,311 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 20:11:19,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:11:19,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436324992] [2024-06-27 20:11:19,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436324992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:11:19,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:11:19,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:11:19,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955294473] [2024-06-27 20:11:19,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:11:19,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:11:19,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:11:19,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:11:19,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:11:19,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:11:19,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 152 transitions, 1238 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 20:11:19,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:11:19,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:11:19,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:11:19,649 INFO L124 PetriNetUnfolderBase]: 435/835 cut-off events. [2024-06-27 20:11:19,649 INFO L125 PetriNetUnfolderBase]: For 68380/68380 co-relation queries the response was YES. [2024-06-27 20:11:19,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4747 conditions, 835 events. 435/835 cut-off events. For 68380/68380 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4187 event pairs, 122 based on Foata normal form. 12/846 useless extension candidates. Maximal degree in co-relation 4664. Up to 733 conditions per place. [2024-06-27 20:11:19,655 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 140 selfloop transitions, 16 changer transitions 10/168 dead transitions. [2024-06-27 20:11:19,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 168 transitions, 1642 flow [2024-06-27 20:11:19,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:11:19,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:11:19,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-27 20:11:19,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34 [2024-06-27 20:11:19,656 INFO L175 Difference]: Start difference. First operand has 206 places, 152 transitions, 1238 flow. Second operand 10 states and 102 transitions. [2024-06-27 20:11:19,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 168 transitions, 1642 flow [2024-06-27 20:11:19,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 168 transitions, 1592 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-27 20:11:19,785 INFO L231 Difference]: Finished difference. Result has 203 places, 146 transitions, 1181 flow [2024-06-27 20:11:19,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1188, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1181, PETRI_PLACES=203, PETRI_TRANSITIONS=146} [2024-06-27 20:11:19,785 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 174 predicate places. [2024-06-27 20:11:19,785 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 146 transitions, 1181 flow [2024-06-27 20:11:19,785 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 20:11:19,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:11:19,786 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 20:11:19,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 20:11:19,786 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 20:11:19,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:11:19,786 INFO L85 PathProgramCache]: Analyzing trace with hash 2097689461, now seen corresponding path program 14 times [2024-06-27 20:11:19,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:11:19,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585454983] [2024-06-27 20:11:19,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:11:19,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:11:19,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:11:20,537 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 20:11:20,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:11:20,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585454983] [2024-06-27 20:11:20,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585454983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:11:20,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:11:20,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:11:20,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675879120] [2024-06-27 20:11:20,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:11:20,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:11:20,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:11:20,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:11:20,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:11:20,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:11:20,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 146 transitions, 1181 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 20:11:20,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:11:20,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:11:20,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:11:20,905 INFO L124 PetriNetUnfolderBase]: 410/784 cut-off events. [2024-06-27 20:11:20,905 INFO L125 PetriNetUnfolderBase]: For 47945/47945 co-relation queries the response was YES. [2024-06-27 20:11:20,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4541 conditions, 784 events. 410/784 cut-off events. For 47945/47945 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3866 event pairs, 97 based on Foata normal form. 2/785 useless extension candidates. Maximal degree in co-relation 4460. Up to 693 conditions per place. [2024-06-27 20:11:20,911 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 125 selfloop transitions, 33 changer transitions 0/160 dead transitions. [2024-06-27 20:11:20,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 160 transitions, 1567 flow [2024-06-27 20:11:20,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:11:20,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:11:20,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-27 20:11:20,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3466666666666667 [2024-06-27 20:11:20,912 INFO L175 Difference]: Start difference. First operand has 203 places, 146 transitions, 1181 flow. Second operand 10 states and 104 transitions. [2024-06-27 20:11:20,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 160 transitions, 1567 flow [2024-06-27 20:11:21,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 160 transitions, 1519 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-27 20:11:21,040 INFO L231 Difference]: Finished difference. Result has 199 places, 147 transitions, 1241 flow [2024-06-27 20:11:21,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1133, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1241, PETRI_PLACES=199, PETRI_TRANSITIONS=147} [2024-06-27 20:11:21,040 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 170 predicate places. [2024-06-27 20:11:21,040 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 147 transitions, 1241 flow [2024-06-27 20:11:21,041 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 20:11:21,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:11:21,041 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 20:11:21,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 20:11:21,041 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 20:11:21,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:11:21,041 INFO L85 PathProgramCache]: Analyzing trace with hash -252042347, now seen corresponding path program 12 times [2024-06-27 20:11:21,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:11:21,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011731090] [2024-06-27 20:11:21,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:11:21,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:11:21,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:11:21,780 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 20:11:21,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:11:21,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011731090] [2024-06-27 20:11:21,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011731090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:11:21,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:11:21,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:11:21,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057329103] [2024-06-27 20:11:21,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:11:21,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:11:21,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:11:21,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:11:21,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:11:21,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:11:21,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 147 transitions, 1241 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 20:11:21,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:11:21,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:11:21,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:11:22,092 INFO L124 PetriNetUnfolderBase]: 397/761 cut-off events. [2024-06-27 20:11:22,092 INFO L125 PetriNetUnfolderBase]: For 44421/44421 co-relation queries the response was YES. [2024-06-27 20:11:22,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3868 conditions, 761 events. 397/761 cut-off events. For 44421/44421 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3746 event pairs, 105 based on Foata normal form. 10/770 useless extension candidates. Maximal degree in co-relation 3788. Up to 672 conditions per place. [2024-06-27 20:11:22,097 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 134 selfloop transitions, 8 changer transitions 20/164 dead transitions. [2024-06-27 20:11:22,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 164 transitions, 1637 flow [2024-06-27 20:11:22,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:11:22,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:11:22,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 105 transitions. [2024-06-27 20:11:22,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3181818181818182 [2024-06-27 20:11:22,098 INFO L175 Difference]: Start difference. First operand has 199 places, 147 transitions, 1241 flow. Second operand 11 states and 105 transitions. [2024-06-27 20:11:22,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 164 transitions, 1637 flow [2024-06-27 20:11:22,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 164 transitions, 1539 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-27 20:11:22,182 INFO L231 Difference]: Finished difference. Result has 202 places, 139 transitions, 1108 flow [2024-06-27 20:11:22,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1143, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1108, PETRI_PLACES=202, PETRI_TRANSITIONS=139} [2024-06-27 20:11:22,183 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 173 predicate places. [2024-06-27 20:11:22,183 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 139 transitions, 1108 flow [2024-06-27 20:11:22,183 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 20:11:22,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:11:22,183 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 20:11:22,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 20:11:22,183 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 20:11:22,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:11:22,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1148880099, now seen corresponding path program 15 times [2024-06-27 20:11:22,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:11:22,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586526154] [2024-06-27 20:11:22,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:11:22,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:11:22,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:11:23,227 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 20:11:23,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:11:23,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586526154] [2024-06-27 20:11:23,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586526154] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:11:23,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:11:23,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:11:23,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034602931] [2024-06-27 20:11:23,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:11:23,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:11:23,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:11:23,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:11:23,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:11:23,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:11:23,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 139 transitions, 1108 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 20:11:23,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:11:23,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:11:23,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:11:23,527 INFO L124 PetriNetUnfolderBase]: 365/697 cut-off events. [2024-06-27 20:11:23,527 INFO L125 PetriNetUnfolderBase]: For 30479/30479 co-relation queries the response was YES. [2024-06-27 20:11:23,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3560 conditions, 697 events. 365/697 cut-off events. For 30479/30479 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3379 event pairs, 62 based on Foata normal form. 2/698 useless extension candidates. Maximal degree in co-relation 3479. Up to 561 conditions per place. [2024-06-27 20:11:23,531 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 112 selfloop transitions, 40 changer transitions 0/154 dead transitions. [2024-06-27 20:11:23,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 154 transitions, 1526 flow [2024-06-27 20:11:23,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:11:23,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:11:23,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 98 transitions. [2024-06-27 20:11:23,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32666666666666666 [2024-06-27 20:11:23,532 INFO L175 Difference]: Start difference. First operand has 202 places, 139 transitions, 1108 flow. Second operand 10 states and 98 transitions. [2024-06-27 20:11:23,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 154 transitions, 1526 flow [2024-06-27 20:11:23,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 154 transitions, 1478 flow, removed 14 selfloop flow, removed 13 redundant places. [2024-06-27 20:11:23,612 INFO L231 Difference]: Finished difference. Result has 188 places, 142 transitions, 1233 flow [2024-06-27 20:11:23,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1072, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1233, PETRI_PLACES=188, PETRI_TRANSITIONS=142} [2024-06-27 20:11:23,612 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 159 predicate places. [2024-06-27 20:11:23,612 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 142 transitions, 1233 flow [2024-06-27 20:11:23,613 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 20:11:23,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:11:23,613 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 20:11:23,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 20:11:23,613 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 20:11:23,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:11:23,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1656801131, now seen corresponding path program 16 times [2024-06-27 20:11:23,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:11:23,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542193600] [2024-06-27 20:11:23,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:11:23,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:11:23,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:11:24,428 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 20:11:24,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:11:24,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542193600] [2024-06-27 20:11:24,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542193600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:11:24,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:11:24,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:11:24,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776645728] [2024-06-27 20:11:24,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:11:24,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:11:24,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:11:24,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:11:24,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:11:24,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:11:24,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 142 transitions, 1233 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 20:11:24,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:11:24,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:11:24,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:11:24,780 INFO L124 PetriNetUnfolderBase]: 405/777 cut-off events. [2024-06-27 20:11:24,780 INFO L125 PetriNetUnfolderBase]: For 47969/47969 co-relation queries the response was YES. [2024-06-27 20:11:24,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4681 conditions, 777 events. 405/777 cut-off events. For 47969/47969 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3842 event pairs, 92 based on Foata normal form. 2/778 useless extension candidates. Maximal degree in co-relation 4606. Up to 598 conditions per place. [2024-06-27 20:11:24,784 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 123 selfloop transitions, 37 changer transitions 0/162 dead transitions. [2024-06-27 20:11:24,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 162 transitions, 1813 flow [2024-06-27 20:11:24,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:11:24,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:11:24,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-27 20:11:24,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515151515151515 [2024-06-27 20:11:24,785 INFO L175 Difference]: Start difference. First operand has 188 places, 142 transitions, 1233 flow. Second operand 11 states and 116 transitions. [2024-06-27 20:11:24,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 162 transitions, 1813 flow [2024-06-27 20:11:24,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 162 transitions, 1701 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-27 20:11:24,880 INFO L231 Difference]: Finished difference. Result has 193 places, 144 transitions, 1269 flow [2024-06-27 20:11:24,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1121, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1269, PETRI_PLACES=193, PETRI_TRANSITIONS=144} [2024-06-27 20:11:24,880 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 164 predicate places. [2024-06-27 20:11:24,880 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 144 transitions, 1269 flow [2024-06-27 20:11:24,880 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 20:11:24,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:11:24,880 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 20:11:24,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 20:11:24,881 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 20:11:24,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:11:24,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1744709663, now seen corresponding path program 13 times [2024-06-27 20:11:24,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:11:24,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003505993] [2024-06-27 20:11:24,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:11:24,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:11:24,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:11:25,579 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 20:11:25,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:11:25,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003505993] [2024-06-27 20:11:25,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003505993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:11:25,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:11:25,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:11:25,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847319864] [2024-06-27 20:11:25,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:11:25,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:11:25,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:11:25,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:11:25,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:11:25,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:11:25,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 144 transitions, 1269 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 20:11:25,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:11:25,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:11:25,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:11:25,946 INFO L124 PetriNetUnfolderBase]: 421/813 cut-off events. [2024-06-27 20:11:25,946 INFO L125 PetriNetUnfolderBase]: For 62498/62498 co-relation queries the response was YES. [2024-06-27 20:11:25,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4795 conditions, 813 events. 421/813 cut-off events. For 62498/62498 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4073 event pairs, 100 based on Foata normal form. 10/822 useless extension candidates. Maximal degree in co-relation 4718. Up to 676 conditions per place. [2024-06-27 20:11:25,952 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 118 selfloop transitions, 27 changer transitions 16/163 dead transitions. [2024-06-27 20:11:25,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 163 transitions, 1671 flow [2024-06-27 20:11:25,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:11:25,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:11:25,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-27 20:11:25,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35454545454545455 [2024-06-27 20:11:25,953 INFO L175 Difference]: Start difference. First operand has 193 places, 144 transitions, 1269 flow. Second operand 11 states and 117 transitions. [2024-06-27 20:11:25,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 163 transitions, 1671 flow [2024-06-27 20:11:26,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 163 transitions, 1566 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-27 20:11:26,062 INFO L231 Difference]: Finished difference. Result has 195 places, 138 transitions, 1182 flow [2024-06-27 20:11:26,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1164, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1182, PETRI_PLACES=195, PETRI_TRANSITIONS=138} [2024-06-27 20:11:26,063 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 166 predicate places. [2024-06-27 20:11:26,063 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 138 transitions, 1182 flow [2024-06-27 20:11:26,063 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 20:11:26,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:11:26,063 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 20:11:26,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 20:11:26,063 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 20:11:26,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:11:26,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1148875449, now seen corresponding path program 17 times [2024-06-27 20:11:26,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:11:26,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193722375] [2024-06-27 20:11:26,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:11:26,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:11:26,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:11:26,880 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 20:11:26,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:11:26,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193722375] [2024-06-27 20:11:26,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193722375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:11:26,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:11:26,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:11:26,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538437746] [2024-06-27 20:11:26,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:11:26,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:11:26,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:11:26,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:11:26,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:11:27,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:11:27,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 138 transitions, 1182 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 20:11:27,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:11:27,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:11:27,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:11:27,221 INFO L124 PetriNetUnfolderBase]: 389/753 cut-off events. [2024-06-27 20:11:27,221 INFO L125 PetriNetUnfolderBase]: For 49651/49651 co-relation queries the response was YES. [2024-06-27 20:11:27,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4543 conditions, 753 events. 389/753 cut-off events. For 49651/49651 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3722 event pairs, 82 based on Foata normal form. 2/754 useless extension candidates. Maximal degree in co-relation 4466. Up to 603 conditions per place. [2024-06-27 20:11:27,226 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 108 selfloop transitions, 41 changer transitions 0/151 dead transitions. [2024-06-27 20:11:27,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 151 transitions, 1542 flow [2024-06-27 20:11:27,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:11:27,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:11:27,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 99 transitions. [2024-06-27 20:11:27,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33 [2024-06-27 20:11:27,227 INFO L175 Difference]: Start difference. First operand has 195 places, 138 transitions, 1182 flow. Second operand 10 states and 99 transitions. [2024-06-27 20:11:27,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 151 transitions, 1542 flow [2024-06-27 20:11:27,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 151 transitions, 1468 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-27 20:11:27,341 INFO L231 Difference]: Finished difference. Result has 188 places, 139 transitions, 1228 flow [2024-06-27 20:11:27,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1112, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1228, PETRI_PLACES=188, PETRI_TRANSITIONS=139} [2024-06-27 20:11:27,342 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 159 predicate places. [2024-06-27 20:11:27,342 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 139 transitions, 1228 flow [2024-06-27 20:11:27,342 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 20:11:27,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:11:27,342 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 20:11:27,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 20:11:27,342 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 20:11:27,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:11:27,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1750958829, now seen corresponding path program 18 times [2024-06-27 20:11:27,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:11:27,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259037956] [2024-06-27 20:11:27,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:11:27,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:11:27,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:11:28,098 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 20:11:28,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:11:28,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259037956] [2024-06-27 20:11:28,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259037956] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:11:28,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:11:28,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:11:28,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403591294] [2024-06-27 20:11:28,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:11:28,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:11:28,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:11:28,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:11:28,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:11:28,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:11:28,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 139 transitions, 1228 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 20:11:28,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:11:28,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:11:28,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:11:28,440 INFO L124 PetriNetUnfolderBase]: 373/725 cut-off events. [2024-06-27 20:11:28,440 INFO L125 PetriNetUnfolderBase]: For 41661/41661 co-relation queries the response was YES. [2024-06-27 20:11:28,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3680 conditions, 725 events. 373/725 cut-off events. For 41661/41661 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3575 event pairs, 84 based on Foata normal form. 12/736 useless extension candidates. Maximal degree in co-relation 3606. Up to 608 conditions per place. [2024-06-27 20:11:28,444 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 122 selfloop transitions, 25 changer transitions 7/156 dead transitions. [2024-06-27 20:11:28,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 156 transitions, 1610 flow [2024-06-27 20:11:28,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:11:28,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:11:28,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-27 20:11:28,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3566666666666667 [2024-06-27 20:11:28,445 INFO L175 Difference]: Start difference. First operand has 188 places, 139 transitions, 1228 flow. Second operand 10 states and 107 transitions. [2024-06-27 20:11:28,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 156 transitions, 1610 flow [2024-06-27 20:11:28,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 156 transitions, 1486 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-27 20:11:28,515 INFO L231 Difference]: Finished difference. Result has 190 places, 136 transitions, 1139 flow [2024-06-27 20:11:28,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1104, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1139, PETRI_PLACES=190, PETRI_TRANSITIONS=136} [2024-06-27 20:11:28,515 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 161 predicate places. [2024-06-27 20:11:28,515 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 136 transitions, 1139 flow [2024-06-27 20:11:28,516 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 20:11:28,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:11:28,516 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 20:11:28,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 20:11:28,516 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 20:11:28,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:11:28,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1573707339, now seen corresponding path program 19 times [2024-06-27 20:11:28,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:11:28,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863254692] [2024-06-27 20:11:28,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:11:28,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:11:28,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:11:29,420 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 20:11:29,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:11:29,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863254692] [2024-06-27 20:11:29,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863254692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:11:29,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:11:29,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:11:29,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933601476] [2024-06-27 20:11:29,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:11:29,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:11:29,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:11:29,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:11:29,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:11:29,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:11:29,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 136 transitions, 1139 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 20:11:29,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:11:29,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:11:29,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:11:29,759 INFO L124 PetriNetUnfolderBase]: 346/672 cut-off events. [2024-06-27 20:11:29,759 INFO L125 PetriNetUnfolderBase]: For 22154/22154 co-relation queries the response was YES. [2024-06-27 20:11:29,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3227 conditions, 672 events. 346/672 cut-off events. For 22154/22154 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3277 event pairs, 69 based on Foata normal form. 2/673 useless extension candidates. Maximal degree in co-relation 3152. Up to 332 conditions per place. [2024-06-27 20:11:29,763 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 88 selfloop transitions, 59 changer transitions 0/149 dead transitions. [2024-06-27 20:11:29,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 149 transitions, 1465 flow [2024-06-27 20:11:29,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:11:29,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:11:29,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-27 20:11:29,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35333333333333333 [2024-06-27 20:11:29,764 INFO L175 Difference]: Start difference. First operand has 190 places, 136 transitions, 1139 flow. Second operand 10 states and 106 transitions. [2024-06-27 20:11:29,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 149 transitions, 1465 flow [2024-06-27 20:11:29,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 149 transitions, 1401 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 20:11:29,857 INFO L231 Difference]: Finished difference. Result has 189 places, 136 transitions, 1197 flow [2024-06-27 20:11:29,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1075, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1197, PETRI_PLACES=189, PETRI_TRANSITIONS=136} [2024-06-27 20:11:29,858 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 160 predicate places. [2024-06-27 20:11:29,858 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 136 transitions, 1197 flow [2024-06-27 20:11:29,858 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 20:11:29,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:11:29,858 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 20:11:29,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 20:11:29,858 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 20:11:29,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:11:29,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1578475883, now seen corresponding path program 14 times [2024-06-27 20:11:29,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:11:29,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988025159] [2024-06-27 20:11:29,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:11:29,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:11:29,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:11:30,678 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 20:11:30,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:11:30,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988025159] [2024-06-27 20:11:30,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988025159] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:11:30,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:11:30,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:11:30,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312929114] [2024-06-27 20:11:30,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:11:30,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:11:30,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:11:30,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:11:30,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:11:30,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:11:30,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 136 transitions, 1197 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 20:11:30,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:11:30,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:11:30,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:11:30,992 INFO L124 PetriNetUnfolderBase]: 362/708 cut-off events. [2024-06-27 20:11:30,992 INFO L125 PetriNetUnfolderBase]: For 36653/36653 co-relation queries the response was YES. [2024-06-27 20:11:30,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3437 conditions, 708 events. 362/708 cut-off events. For 36653/36653 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3499 event pairs, 67 based on Foata normal form. 10/717 useless extension candidates. Maximal degree in co-relation 3362. Up to 522 conditions per place. [2024-06-27 20:11:30,996 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 104 selfloop transitions, 39 changer transitions 7/152 dead transitions. [2024-06-27 20:11:30,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 152 transitions, 1569 flow [2024-06-27 20:11:30,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:11:30,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:11:30,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-27 20:11:30,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3433333333333333 [2024-06-27 20:11:30,997 INFO L175 Difference]: Start difference. First operand has 189 places, 136 transitions, 1197 flow. Second operand 10 states and 103 transitions. [2024-06-27 20:11:30,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 152 transitions, 1569 flow [2024-06-27 20:11:31,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 152 transitions, 1333 flow, removed 13 selfloop flow, removed 12 redundant places. [2024-06-27 20:11:31,058 INFO L231 Difference]: Finished difference. Result has 187 places, 133 transitions, 1030 flow [2024-06-27 20:11:31,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=961, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1030, PETRI_PLACES=187, PETRI_TRANSITIONS=133} [2024-06-27 20:11:31,058 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 158 predicate places. [2024-06-27 20:11:31,058 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 133 transitions, 1030 flow [2024-06-27 20:11:31,058 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 20:11:31,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:11:31,058 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 20:11:31,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 20:11:31,059 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 20:11:31,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:11:31,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1751204783, now seen corresponding path program 15 times [2024-06-27 20:11:31,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:11:31,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316330117] [2024-06-27 20:11:31,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:11:31,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:11:31,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:11:31,685 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 20:11:31,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:11:31,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316330117] [2024-06-27 20:11:31,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316330117] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:11:31,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:11:31,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:11:31,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794008798] [2024-06-27 20:11:31,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:11:31,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:11:31,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:11:31,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:11:31,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:11:31,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:11:31,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 133 transitions, 1030 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 20:11:31,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:11:31,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:11:31,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:11:31,954 INFO L124 PetriNetUnfolderBase]: 370/732 cut-off events. [2024-06-27 20:11:31,954 INFO L125 PetriNetUnfolderBase]: For 47953/47953 co-relation queries the response was YES. [2024-06-27 20:11:31,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3747 conditions, 732 events. 370/732 cut-off events. For 47953/47953 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3628 event pairs, 91 based on Foata normal form. 8/739 useless extension candidates. Maximal degree in co-relation 3674. Up to 556 conditions per place. [2024-06-27 20:11:31,958 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 123 selfloop transitions, 21 changer transitions 8/154 dead transitions. [2024-06-27 20:11:31,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 154 transitions, 1562 flow [2024-06-27 20:11:31,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:11:31,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:11:31,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-27 20:11:31,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36333333333333334 [2024-06-27 20:11:31,959 INFO L175 Difference]: Start difference. First operand has 187 places, 133 transitions, 1030 flow. Second operand 10 states and 109 transitions. [2024-06-27 20:11:31,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 154 transitions, 1562 flow [2024-06-27 20:11:32,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 154 transitions, 1474 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-27 20:11:32,032 INFO L231 Difference]: Finished difference. Result has 185 places, 130 transitions, 975 flow [2024-06-27 20:11:32,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=944, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=975, PETRI_PLACES=185, PETRI_TRANSITIONS=130} [2024-06-27 20:11:32,032 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 156 predicate places. [2024-06-27 20:11:32,032 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 130 transitions, 975 flow [2024-06-27 20:11:32,032 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 20:11:32,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:11:32,032 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 20:11:32,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 20:11:32,032 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 20:11:32,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:11:32,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1750965773, now seen corresponding path program 16 times [2024-06-27 20:11:32,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:11:32,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617649884] [2024-06-27 20:11:32,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:11:32,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:11:32,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:11:32,733 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 20:11:32,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:11:32,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617649884] [2024-06-27 20:11:32,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617649884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:11:32,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:11:32,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:11:32,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589798759] [2024-06-27 20:11:32,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:11:32,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:11:32,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:11:32,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:11:32,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:11:32,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:11:32,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 130 transitions, 975 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 20:11:32,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:11:32,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:11:32,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:11:33,014 INFO L124 PetriNetUnfolderBase]: 338/668 cut-off events. [2024-06-27 20:11:33,014 INFO L125 PetriNetUnfolderBase]: For 33687/33687 co-relation queries the response was YES. [2024-06-27 20:11:33,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2854 conditions, 668 events. 338/668 cut-off events. For 33687/33687 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3275 event pairs, 80 based on Foata normal form. 10/677 useless extension candidates. Maximal degree in co-relation 2782. Up to 556 conditions per place. [2024-06-27 20:11:33,018 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 111 selfloop transitions, 17 changer transitions 18/148 dead transitions. [2024-06-27 20:11:33,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 148 transitions, 1343 flow [2024-06-27 20:11:33,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:11:33,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:11:33,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-27 20:11:33,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33636363636363636 [2024-06-27 20:11:33,019 INFO L175 Difference]: Start difference. First operand has 185 places, 130 transitions, 975 flow. Second operand 11 states and 111 transitions. [2024-06-27 20:11:33,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 148 transitions, 1343 flow [2024-06-27 20:11:33,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 148 transitions, 1300 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-27 20:11:33,074 INFO L231 Difference]: Finished difference. Result has 184 places, 123 transitions, 931 flow [2024-06-27 20:11:33,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=932, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=931, PETRI_PLACES=184, PETRI_TRANSITIONS=123} [2024-06-27 20:11:33,075 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 155 predicate places. [2024-06-27 20:11:33,075 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 123 transitions, 931 flow [2024-06-27 20:11:33,075 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 20:11:33,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:11:33,075 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 20:11:33,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 20:11:33,075 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 20:11:33,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:11:33,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1419232137, now seen corresponding path program 1 times [2024-06-27 20:11:33,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:11:33,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572668526] [2024-06-27 20:11:33,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:11:33,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:11:33,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:11:34,146 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 20:11:34,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:11:34,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572668526] [2024-06-27 20:11:34,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572668526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:11:34,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:11:34,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:11:34,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627221877] [2024-06-27 20:11:34,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:11:34,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:11:34,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:11:34,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:11:34,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:11:34,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:11:34,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 123 transitions, 931 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 20:11:34,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:11:34,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:11:34,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:11:34,443 INFO L124 PetriNetUnfolderBase]: 315/627 cut-off events. [2024-06-27 20:11:34,444 INFO L125 PetriNetUnfolderBase]: For 25996/25996 co-relation queries the response was YES. [2024-06-27 20:11:34,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2665 conditions, 627 events. 315/627 cut-off events. For 25996/25996 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3033 event pairs, 61 based on Foata normal form. 6/632 useless extension candidates. Maximal degree in co-relation 2594. Up to 513 conditions per place. [2024-06-27 20:11:34,447 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 108 selfloop transitions, 18 changer transitions 13/141 dead transitions. [2024-06-27 20:11:34,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 141 transitions, 1268 flow [2024-06-27 20:11:34,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:11:34,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:11:34,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-06-27 20:11:34,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-27 20:11:34,448 INFO L175 Difference]: Start difference. First operand has 184 places, 123 transitions, 931 flow. Second operand 10 states and 100 transitions. [2024-06-27 20:11:34,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 141 transitions, 1268 flow [2024-06-27 20:11:34,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 141 transitions, 1220 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-27 20:11:34,491 INFO L231 Difference]: Finished difference. Result has 174 places, 119 transitions, 897 flow [2024-06-27 20:11:34,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=885, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=897, PETRI_PLACES=174, PETRI_TRANSITIONS=119} [2024-06-27 20:11:34,492 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 145 predicate places. [2024-06-27 20:11:34,492 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 119 transitions, 897 flow [2024-06-27 20:11:34,492 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 20:11:34,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:11:34,492 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 20:11:34,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 20:11:34,492 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 20:11:34,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:11:34,493 INFO L85 PathProgramCache]: Analyzing trace with hash -139973761, now seen corresponding path program 2 times [2024-06-27 20:11:34,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:11:34,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535475840] [2024-06-27 20:11:34,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:11:34,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:11:34,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:11:35,539 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 20:11:35,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:11:35,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535475840] [2024-06-27 20:11:35,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535475840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:11:35,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:11:35,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:11:35,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249882412] [2024-06-27 20:11:35,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:11:35,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:11:35,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:11:35,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:11:35,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:11:35,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:11:35,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 119 transitions, 897 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:11:35,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:11:35,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:11:35,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:11:35,904 INFO L124 PetriNetUnfolderBase]: 299/599 cut-off events. [2024-06-27 20:11:35,904 INFO L125 PetriNetUnfolderBase]: For 22807/22807 co-relation queries the response was YES. [2024-06-27 20:11:35,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2537 conditions, 599 events. 299/599 cut-off events. For 22807/22807 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2857 event pairs, 54 based on Foata normal form. 6/604 useless extension candidates. Maximal degree in co-relation 2470. Up to 399 conditions per place. [2024-06-27 20:11:35,908 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 91 selfloop transitions, 31 changer transitions 14/138 dead transitions. [2024-06-27 20:11:35,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 138 transitions, 1219 flow [2024-06-27 20:11:35,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:11:35,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:11:35,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-27 20:11:35,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3303030303030303 [2024-06-27 20:11:35,909 INFO L175 Difference]: Start difference. First operand has 174 places, 119 transitions, 897 flow. Second operand 11 states and 109 transitions. [2024-06-27 20:11:35,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 138 transitions, 1219 flow [2024-06-27 20:11:35,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 138 transitions, 1179 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-27 20:11:35,945 INFO L231 Difference]: Finished difference. Result has 172 places, 111 transitions, 860 flow [2024-06-27 20:11:35,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=857, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=860, PETRI_PLACES=172, PETRI_TRANSITIONS=111} [2024-06-27 20:11:35,945 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 143 predicate places. [2024-06-27 20:11:35,946 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 111 transitions, 860 flow [2024-06-27 20:11:35,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:11:35,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:11:35,946 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 20:11:35,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 20:11:35,946 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 20:11:35,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:11:35,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1868871365, now seen corresponding path program 3 times [2024-06-27 20:11:35,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:11:35,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525822662] [2024-06-27 20:11:35,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:11:35,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:11:35,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:11:37,025 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 20:11:37,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:11:37,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525822662] [2024-06-27 20:11:37,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525822662] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:11:37,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:11:37,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:11:37,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662641762] [2024-06-27 20:11:37,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:11:37,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:11:37,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:11:37,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:11:37,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:11:37,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:11:37,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 111 transitions, 860 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:11:37,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:11:37,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:11:37,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:11:37,460 INFO L124 PetriNetUnfolderBase]: 276/566 cut-off events. [2024-06-27 20:11:37,460 INFO L125 PetriNetUnfolderBase]: For 22009/22009 co-relation queries the response was YES. [2024-06-27 20:11:37,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2309 conditions, 566 events. 276/566 cut-off events. For 22009/22009 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2715 event pairs, 61 based on Foata normal form. 8/573 useless extension candidates. Maximal degree in co-relation 2243. Up to 371 conditions per place. [2024-06-27 20:11:37,463 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 78 selfloop transitions, 17 changer transitions 32/129 dead transitions. [2024-06-27 20:11:37,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 129 transitions, 1164 flow [2024-06-27 20:11:37,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:11:37,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:11:37,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-27 20:11:37,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3303030303030303 [2024-06-27 20:11:37,464 INFO L175 Difference]: Start difference. First operand has 172 places, 111 transitions, 860 flow. Second operand 11 states and 109 transitions. [2024-06-27 20:11:37,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 129 transitions, 1164 flow [2024-06-27 20:11:37,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 129 transitions, 1096 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 20:11:37,495 INFO L231 Difference]: Finished difference. Result has 168 places, 88 transitions, 638 flow [2024-06-27 20:11:37,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=638, PETRI_PLACES=168, PETRI_TRANSITIONS=88} [2024-06-27 20:11:37,495 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 139 predicate places. [2024-06-27 20:11:37,495 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 88 transitions, 638 flow [2024-06-27 20:11:37,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:11:37,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:11:37,495 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 20:11:37,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-27 20:11:37,495 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 20:11:37,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:11:37,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1228693729, now seen corresponding path program 4 times [2024-06-27 20:11:37,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:11:37,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278002692] [2024-06-27 20:11:37,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:11:37,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:11:37,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:11:38,381 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 20:11:38,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:11:38,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278002692] [2024-06-27 20:11:38,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278002692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:11:38,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:11:38,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:11:38,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687419293] [2024-06-27 20:11:38,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:11:38,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:11:38,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:11:38,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:11:38,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:11:38,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:11:38,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 88 transitions, 638 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:11:38,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:11:38,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:11:38,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:11:38,696 INFO L124 PetriNetUnfolderBase]: 216/456 cut-off events. [2024-06-27 20:11:38,697 INFO L125 PetriNetUnfolderBase]: For 17216/17216 co-relation queries the response was YES. [2024-06-27 20:11:38,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1794 conditions, 456 events. 216/456 cut-off events. For 17216/17216 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2072 event pairs, 57 based on Foata normal form. 6/461 useless extension candidates. Maximal degree in co-relation 1730. Up to 370 conditions per place. [2024-06-27 20:11:38,699 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 74 selfloop transitions, 11 changer transitions 19/106 dead transitions. [2024-06-27 20:11:38,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 106 transitions, 892 flow [2024-06-27 20:11:38,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:11:38,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:11:38,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 105 transitions. [2024-06-27 20:11:38,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3181818181818182 [2024-06-27 20:11:38,700 INFO L175 Difference]: Start difference. First operand has 168 places, 88 transitions, 638 flow. Second operand 11 states and 105 transitions. [2024-06-27 20:11:38,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 106 transitions, 892 flow [2024-06-27 20:11:38,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 106 transitions, 811 flow, removed 12 selfloop flow, removed 17 redundant places. [2024-06-27 20:11:38,719 INFO L231 Difference]: Finished difference. Result has 147 places, 80 transitions, 544 flow [2024-06-27 20:11:38,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=559, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=544, PETRI_PLACES=147, PETRI_TRANSITIONS=80} [2024-06-27 20:11:38,719 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 118 predicate places. [2024-06-27 20:11:38,719 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 80 transitions, 544 flow [2024-06-27 20:11:38,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:11:38,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:11:38,719 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 20:11:38,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-27 20:11:38,719 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 20:11:38,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:11:38,720 INFO L85 PathProgramCache]: Analyzing trace with hash 232029845, now seen corresponding path program 5 times [2024-06-27 20:11:38,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:11:38,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459493069] [2024-06-27 20:11:38,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:11:38,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:11:38,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:11:39,639 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 20:11:39,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:11:39,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459493069] [2024-06-27 20:11:39,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459493069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:11:39,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:11:39,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:11:39,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902090719] [2024-06-27 20:11:39,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:11:39,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:11:39,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:11:39,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:11:39,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:11:39,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:11:39,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 80 transitions, 544 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:11:39,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:11:39,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:11:39,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:11:39,975 INFO L124 PetriNetUnfolderBase]: 198/418 cut-off events. [2024-06-27 20:11:39,975 INFO L125 PetriNetUnfolderBase]: For 11945/11945 co-relation queries the response was YES. [2024-06-27 20:11:39,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1555 conditions, 418 events. 198/418 cut-off events. For 11945/11945 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1826 event pairs, 46 based on Foata normal form. 6/423 useless extension candidates. Maximal degree in co-relation 1501. Up to 277 conditions per place. [2024-06-27 20:11:39,977 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 61 selfloop transitions, 23 changer transitions 12/98 dead transitions. [2024-06-27 20:11:39,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 98 transitions, 784 flow [2024-06-27 20:11:39,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:11:39,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:11:39,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-27 20:11:39,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3212121212121212 [2024-06-27 20:11:39,978 INFO L175 Difference]: Start difference. First operand has 147 places, 80 transitions, 544 flow. Second operand 11 states and 106 transitions. [2024-06-27 20:11:39,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 98 transitions, 784 flow [2024-06-27 20:11:39,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 98 transitions, 746 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-27 20:11:39,991 INFO L231 Difference]: Finished difference. Result has 136 places, 76 transitions, 537 flow [2024-06-27 20:11:39,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=537, PETRI_PLACES=136, PETRI_TRANSITIONS=76} [2024-06-27 20:11:39,992 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 107 predicate places. [2024-06-27 20:11:39,992 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 76 transitions, 537 flow [2024-06-27 20:11:39,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:11:39,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:11:39,992 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 20:11:39,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-27 20:11:39,992 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 20:11:39,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:11:39,992 INFO L85 PathProgramCache]: Analyzing trace with hash 231885695, now seen corresponding path program 6 times [2024-06-27 20:11:39,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:11:39,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235547028] [2024-06-27 20:11:39,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:11:39,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:11:40,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:11:40,927 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 20:11:40,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:11:40,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235547028] [2024-06-27 20:11:40,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235547028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:11:40,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:11:40,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:11:40,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649863052] [2024-06-27 20:11:40,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:11:40,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:11:40,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:11:40,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:11:40,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:11:41,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:11:41,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 76 transitions, 537 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:11:41,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:11:41,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:11:41,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:11:41,196 INFO L124 PetriNetUnfolderBase]: 184/396 cut-off events. [2024-06-27 20:11:41,196 INFO L125 PetriNetUnfolderBase]: For 9969/9969 co-relation queries the response was YES. [2024-06-27 20:11:41,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1488 conditions, 396 events. 184/396 cut-off events. For 9969/9969 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1722 event pairs, 44 based on Foata normal form. 6/401 useless extension candidates. Maximal degree in co-relation 1438. Up to 249 conditions per place. [2024-06-27 20:11:41,198 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 56 selfloop transitions, 19 changer transitions 17/94 dead transitions. [2024-06-27 20:11:41,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 94 transitions, 767 flow [2024-06-27 20:11:41,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:11:41,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:11:41,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 105 transitions. [2024-06-27 20:11:41,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3181818181818182 [2024-06-27 20:11:41,198 INFO L175 Difference]: Start difference. First operand has 136 places, 76 transitions, 537 flow. Second operand 11 states and 105 transitions. [2024-06-27 20:11:41,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 94 transitions, 767 flow [2024-06-27 20:11:41,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 94 transitions, 715 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 20:11:41,210 INFO L231 Difference]: Finished difference. Result has 132 places, 69 transitions, 494 flow [2024-06-27 20:11:41,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=494, PETRI_PLACES=132, PETRI_TRANSITIONS=69} [2024-06-27 20:11:41,210 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 103 predicate places. [2024-06-27 20:11:41,210 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 69 transitions, 494 flow [2024-06-27 20:11:41,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:11:41,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:11:41,210 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 20:11:41,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-27 20:11:41,211 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 20:11:41,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:11:41,211 INFO L85 PathProgramCache]: Analyzing trace with hash -34680149, now seen corresponding path program 7 times [2024-06-27 20:11:41,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:11:41,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25614431] [2024-06-27 20:11:41,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:11:41,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:11:41,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:11:42,413 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 20:11:42,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:11:42,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25614431] [2024-06-27 20:11:42,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25614431] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:11:42,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:11:42,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:11:42,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744451809] [2024-06-27 20:11:42,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:11:42,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:11:42,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:11:42,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:11:42,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:11:42,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:11:42,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 69 transitions, 494 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:11:42,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:11:42,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:11:42,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:11:42,745 INFO L124 PetriNetUnfolderBase]: 172/376 cut-off events. [2024-06-27 20:11:42,746 INFO L125 PetriNetUnfolderBase]: For 9002/9002 co-relation queries the response was YES. [2024-06-27 20:11:42,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1402 conditions, 376 events. 172/376 cut-off events. For 9002/9002 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1618 event pairs, 44 based on Foata normal form. 6/381 useless extension candidates. Maximal degree in co-relation 1354. Up to 274 conditions per place. [2024-06-27 20:11:42,747 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 54 selfloop transitions, 11 changer transitions 22/89 dead transitions. [2024-06-27 20:11:42,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 89 transitions, 724 flow [2024-06-27 20:11:42,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:11:42,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:11:42,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 108 transitions. [2024-06-27 20:11:42,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3 [2024-06-27 20:11:42,748 INFO L175 Difference]: Start difference. First operand has 132 places, 69 transitions, 494 flow. Second operand 12 states and 108 transitions. [2024-06-27 20:11:42,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 89 transitions, 724 flow [2024-06-27 20:11:42,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 89 transitions, 676 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-27 20:11:42,758 INFO L231 Difference]: Finished difference. Result has 127 places, 65 transitions, 445 flow [2024-06-27 20:11:42,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=445, PETRI_PLACES=127, PETRI_TRANSITIONS=65} [2024-06-27 20:11:42,758 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 98 predicate places. [2024-06-27 20:11:42,758 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 65 transitions, 445 flow [2024-06-27 20:11:42,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:11:42,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:11:42,758 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 20:11:42,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-27 20:11:42,758 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 20:11:42,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:11:42,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1312074253, now seen corresponding path program 8 times [2024-06-27 20:11:42,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:11:42,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934250793] [2024-06-27 20:11:42,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:11:42,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:11:42,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:11:43,800 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 20:11:43,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:11:43,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934250793] [2024-06-27 20:11:43,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934250793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:11:43,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:11:43,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:11:43,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769631897] [2024-06-27 20:11:43,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:11:43,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:11:43,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:11:43,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:11:43,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:11:43,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:11:43,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 65 transitions, 445 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:11:43,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:11:43,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:11:43,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:11:44,069 INFO L124 PetriNetUnfolderBase]: 153/336 cut-off events. [2024-06-27 20:11:44,069 INFO L125 PetriNetUnfolderBase]: For 7236/7236 co-relation queries the response was YES. [2024-06-27 20:11:44,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1247 conditions, 336 events. 153/336 cut-off events. For 7236/7236 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1387 event pairs, 46 based on Foata normal form. 6/341 useless extension candidates. Maximal degree in co-relation 1200. Up to 251 conditions per place. [2024-06-27 20:11:44,071 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 53 selfloop transitions, 10 changer transitions 17/82 dead transitions. [2024-06-27 20:11:44,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 82 transitions, 647 flow [2024-06-27 20:11:44,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:11:44,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:11:44,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 104 transitions. [2024-06-27 20:11:44,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3151515151515151 [2024-06-27 20:11:44,071 INFO L175 Difference]: Start difference. First operand has 127 places, 65 transitions, 445 flow. Second operand 11 states and 104 transitions. [2024-06-27 20:11:44,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 82 transitions, 647 flow [2024-06-27 20:11:44,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 82 transitions, 617 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 20:11:44,081 INFO L231 Difference]: Finished difference. Result has 120 places, 59 transitions, 410 flow [2024-06-27 20:11:44,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=410, PETRI_PLACES=120, PETRI_TRANSITIONS=59} [2024-06-27 20:11:44,081 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 91 predicate places. [2024-06-27 20:11:44,081 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 59 transitions, 410 flow [2024-06-27 20:11:44,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:11:44,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:11:44,081 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 20:11:44,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-27 20:11:44,082 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 20:11:44,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:11:44,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1255545695, now seen corresponding path program 9 times [2024-06-27 20:11:44,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:11:44,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623902660] [2024-06-27 20:11:44,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:11:44,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:11:44,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:11:45,249 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 20:11:45,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:11:45,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623902660] [2024-06-27 20:11:45,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623902660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:11:45,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:11:45,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:11:45,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863655073] [2024-06-27 20:11:45,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:11:45,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:11:45,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:11:45,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:11:45,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:11:45,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:11:45,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 59 transitions, 410 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:11:45,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:11:45,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:11:45,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:11:45,524 INFO L124 PetriNetUnfolderBase]: 139/306 cut-off events. [2024-06-27 20:11:45,524 INFO L125 PetriNetUnfolderBase]: For 7200/7200 co-relation queries the response was YES. [2024-06-27 20:11:45,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1151 conditions, 306 events. 139/306 cut-off events. For 7200/7200 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1211 event pairs, 41 based on Foata normal form. 6/311 useless extension candidates. Maximal degree in co-relation 1107. Up to 179 conditions per place. [2024-06-27 20:11:45,525 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 43 selfloop transitions, 19 changer transitions 11/75 dead transitions. [2024-06-27 20:11:45,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 75 transitions, 598 flow [2024-06-27 20:11:45,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:11:45,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:11:45,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 104 transitions. [2024-06-27 20:11:45,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3151515151515151 [2024-06-27 20:11:45,526 INFO L175 Difference]: Start difference. First operand has 120 places, 59 transitions, 410 flow. Second operand 11 states and 104 transitions. [2024-06-27 20:11:45,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 75 transitions, 598 flow [2024-06-27 20:11:45,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 75 transitions, 566 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-27 20:11:45,531 INFO L231 Difference]: Finished difference. Result has 110 places, 56 transitions, 405 flow [2024-06-27 20:11:45,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=405, PETRI_PLACES=110, PETRI_TRANSITIONS=56} [2024-06-27 20:11:45,532 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 81 predicate places. [2024-06-27 20:11:45,532 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 56 transitions, 405 flow [2024-06-27 20:11:45,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:11:45,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:11:45,532 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 20:11:45,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-27 20:11:45,532 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 20:11:45,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:11:45,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1255401545, now seen corresponding path program 10 times [2024-06-27 20:11:45,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:11:45,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242408654] [2024-06-27 20:11:45,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:11:45,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:11:45,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:11:46,549 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 20:11:46,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:11:46,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242408654] [2024-06-27 20:11:46,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242408654] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:11:46,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:11:46,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:11:46,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024412591] [2024-06-27 20:11:46,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:11:46,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:11:46,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:11:46,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:11:46,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:11:46,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:11:46,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 56 transitions, 405 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:11:46,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:11:46,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:11:46,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:11:46,815 INFO L124 PetriNetUnfolderBase]: 129/288 cut-off events. [2024-06-27 20:11:46,815 INFO L125 PetriNetUnfolderBase]: For 5344/5344 co-relation queries the response was YES. [2024-06-27 20:11:46,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1085 conditions, 288 events. 129/288 cut-off events. For 5344/5344 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1117 event pairs, 39 based on Foata normal form. 6/293 useless extension candidates. Maximal degree in co-relation 1046. Up to 161 conditions per place. [2024-06-27 20:11:46,817 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 39 selfloop transitions, 17 changer transitions 14/72 dead transitions. [2024-06-27 20:11:46,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 72 transitions, 585 flow [2024-06-27 20:11:46,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:11:46,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:11:46,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 103 transitions. [2024-06-27 20:11:46,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31212121212121213 [2024-06-27 20:11:46,817 INFO L175 Difference]: Start difference. First operand has 110 places, 56 transitions, 405 flow. Second operand 11 states and 103 transitions. [2024-06-27 20:11:46,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 72 transitions, 585 flow [2024-06-27 20:11:46,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 72 transitions, 543 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-27 20:11:46,823 INFO L231 Difference]: Finished difference. Result has 107 places, 52 transitions, 382 flow [2024-06-27 20:11:46,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=382, PETRI_PLACES=107, PETRI_TRANSITIONS=52} [2024-06-27 20:11:46,823 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 78 predicate places. [2024-06-27 20:11:46,823 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 52 transitions, 382 flow [2024-06-27 20:11:46,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:11:46,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:11:46,823 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 20:11:46,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-27 20:11:46,824 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 20:11:46,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:11:46,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1251826625, now seen corresponding path program 11 times [2024-06-27 20:11:46,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:11:46,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475063386] [2024-06-27 20:11:46,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:11:46,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:11:46,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:11:47,972 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 20:11:47,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:11:47,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475063386] [2024-06-27 20:11:47,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475063386] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:11:47,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:11:47,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:11:47,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374263867] [2024-06-27 20:11:47,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:11:47,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:11:47,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:11:47,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:11:47,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:11:48,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:11:48,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 52 transitions, 382 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:11:48,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:11:48,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:11:48,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:11:48,310 INFO L124 PetriNetUnfolderBase]: 115/262 cut-off events. [2024-06-27 20:11:48,310 INFO L125 PetriNetUnfolderBase]: For 4992/4992 co-relation queries the response was YES. [2024-06-27 20:11:48,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1002 conditions, 262 events. 115/262 cut-off events. For 4992/4992 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 980 event pairs, 35 based on Foata normal form. 6/267 useless extension candidates. Maximal degree in co-relation 964. Up to 135 conditions per place. [2024-06-27 20:11:48,311 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 34 selfloop transitions, 15 changer transitions 17/68 dead transitions. [2024-06-27 20:11:48,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 68 transitions, 552 flow [2024-06-27 20:11:48,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:11:48,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:11:48,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 102 transitions. [2024-06-27 20:11:48,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3090909090909091 [2024-06-27 20:11:48,311 INFO L175 Difference]: Start difference. First operand has 107 places, 52 transitions, 382 flow. Second operand 11 states and 102 transitions. [2024-06-27 20:11:48,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 68 transitions, 552 flow [2024-06-27 20:11:48,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 68 transitions, 510 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 20:11:48,316 INFO L231 Difference]: Finished difference. Result has 101 places, 47 transitions, 350 flow [2024-06-27 20:11:48,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=350, PETRI_PLACES=101, PETRI_TRANSITIONS=47} [2024-06-27 20:11:48,317 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 72 predicate places. [2024-06-27 20:11:48,317 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 47 transitions, 350 flow [2024-06-27 20:11:48,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:11:48,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:11:48,317 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 20:11:48,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-27 20:11:48,317 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 20:11:48,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:11:48,318 INFO L85 PathProgramCache]: Analyzing trace with hash -2042757717, now seen corresponding path program 12 times [2024-06-27 20:11:48,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:11:48,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204651107] [2024-06-27 20:11:48,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:11:48,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:11:48,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:11:49,439 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 20:11:49,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:11:49,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204651107] [2024-06-27 20:11:49,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204651107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:11:49,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:11:49,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:11:49,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580751040] [2024-06-27 20:11:49,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:11:49,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:11:49,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:11:49,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:11:49,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:11:49,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:11:49,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 47 transitions, 350 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:11:49,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:11:49,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:11:49,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:11:49,717 INFO L124 PetriNetUnfolderBase]: 99/230 cut-off events. [2024-06-27 20:11:49,717 INFO L125 PetriNetUnfolderBase]: For 4044/4044 co-relation queries the response was YES. [2024-06-27 20:11:49,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 891 conditions, 230 events. 99/230 cut-off events. For 4044/4044 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 807 event pairs, 34 based on Foata normal form. 6/235 useless extension candidates. Maximal degree in co-relation 856. Up to 157 conditions per place. [2024-06-27 20:11:49,718 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 35 selfloop transitions, 6 changer transitions 20/63 dead transitions. [2024-06-27 20:11:49,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 63 transitions, 510 flow [2024-06-27 20:11:49,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:11:49,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:11:49,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 100 transitions. [2024-06-27 20:11:49,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30303030303030304 [2024-06-27 20:11:49,719 INFO L175 Difference]: Start difference. First operand has 101 places, 47 transitions, 350 flow. Second operand 11 states and 100 transitions. [2024-06-27 20:11:49,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 63 transitions, 510 flow [2024-06-27 20:11:49,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 63 transitions, 470 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-27 20:11:49,723 INFO L231 Difference]: Finished difference. Result has 93 places, 39 transitions, 283 flow [2024-06-27 20:11:49,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=283, PETRI_PLACES=93, PETRI_TRANSITIONS=39} [2024-06-27 20:11:49,723 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 64 predicate places. [2024-06-27 20:11:49,724 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 39 transitions, 283 flow [2024-06-27 20:11:49,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:11:49,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:11:49,724 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 20:11:49,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-27 20:11:49,724 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 20:11:49,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:11:49,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1631236343, now seen corresponding path program 13 times [2024-06-27 20:11:49,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:11:49,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159755829] [2024-06-27 20:11:49,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:11:49,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:11:49,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:11:50,816 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 20:11:50,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:11:50,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159755829] [2024-06-27 20:11:50,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159755829] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:11:50,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:11:50,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:11:50,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780540272] [2024-06-27 20:11:50,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:11:50,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:11:50,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:11:50,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:11:50,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:11:50,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:11:50,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 39 transitions, 283 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:11:50,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:11:50,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:11:50,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:11:51,143 INFO L124 PetriNetUnfolderBase]: 88/201 cut-off events. [2024-06-27 20:11:51,143 INFO L125 PetriNetUnfolderBase]: For 2892/2896 co-relation queries the response was YES. [2024-06-27 20:11:51,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 763 conditions, 201 events. 88/201 cut-off events. For 2892/2896 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 656 event pairs, 21 based on Foata normal form. 10/210 useless extension candidates. Maximal degree in co-relation 732. Up to 106 conditions per place. [2024-06-27 20:11:51,144 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 24 selfloop transitions, 8 changer transitions 23/57 dead transitions. [2024-06-27 20:11:51,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 57 transitions, 441 flow [2024-06-27 20:11:51,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:11:51,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:11:51,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 106 transitions. [2024-06-27 20:11:51,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29444444444444445 [2024-06-27 20:11:51,145 INFO L175 Difference]: Start difference. First operand has 93 places, 39 transitions, 283 flow. Second operand 12 states and 106 transitions. [2024-06-27 20:11:51,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 57 transitions, 441 flow [2024-06-27 20:11:51,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 57 transitions, 389 flow, removed 9 selfloop flow, removed 17 redundant places. [2024-06-27 20:11:51,148 INFO L231 Difference]: Finished difference. Result has 77 places, 31 transitions, 185 flow [2024-06-27 20:11:51,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=185, PETRI_PLACES=77, PETRI_TRANSITIONS=31} [2024-06-27 20:11:51,148 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 48 predicate places. [2024-06-27 20:11:51,148 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 31 transitions, 185 flow [2024-06-27 20:11:51,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:11:51,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:11:51,148 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 20:11:51,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-27 20:11:51,149 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 20:11:51,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:11:51,149 INFO L85 PathProgramCache]: Analyzing trace with hash 717111557, now seen corresponding path program 14 times [2024-06-27 20:11:51,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:11:51,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67235219] [2024-06-27 20:11:51,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:11:51,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:11:51,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:11:52,223 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 20:11:52,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:11:52,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67235219] [2024-06-27 20:11:52,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67235219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:11:52,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:11:52,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:11:52,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108688237] [2024-06-27 20:11:52,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:11:52,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:11:52,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:11:52,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:11:52,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:11:52,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:11:52,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 31 transitions, 185 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:11:52,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:11:52,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:11:52,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:11:52,535 INFO L124 PetriNetUnfolderBase]: 65/154 cut-off events. [2024-06-27 20:11:52,535 INFO L125 PetriNetUnfolderBase]: For 1294/1294 co-relation queries the response was YES. [2024-06-27 20:11:52,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 535 conditions, 154 events. 65/154 cut-off events. For 1294/1294 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 418 event pairs, 17 based on Foata normal form. 6/159 useless extension candidates. Maximal degree in co-relation 512. Up to 69 conditions per place. [2024-06-27 20:11:52,535 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 17 selfloop transitions, 4 changer transitions 26/49 dead transitions. [2024-06-27 20:11:52,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 49 transitions, 326 flow [2024-06-27 20:11:52,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:11:52,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:11:52,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 106 transitions. [2024-06-27 20:11:52,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29444444444444445 [2024-06-27 20:11:52,536 INFO L175 Difference]: Start difference. First operand has 77 places, 31 transitions, 185 flow. Second operand 12 states and 106 transitions. [2024-06-27 20:11:52,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 49 transitions, 326 flow [2024-06-27 20:11:52,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 49 transitions, 292 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-27 20:11:52,537 INFO L231 Difference]: Finished difference. Result has 66 places, 21 transitions, 104 flow [2024-06-27 20:11:52,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=104, PETRI_PLACES=66, PETRI_TRANSITIONS=21} [2024-06-27 20:11:52,538 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 37 predicate places. [2024-06-27 20:11:52,538 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 21 transitions, 104 flow [2024-06-27 20:11:52,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:11:52,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:11:52,538 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 20:11:52,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-27 20:11:52,538 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 20:11:52,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:11:52,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1647835619, now seen corresponding path program 15 times [2024-06-27 20:11:52,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:11:52,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686972009] [2024-06-27 20:11:52,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:11:52,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:11:52,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:11:53,417 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 20:11:53,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:11:53,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686972009] [2024-06-27 20:11:53,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686972009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:11:53,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:11:53,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:11:53,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688616967] [2024-06-27 20:11:53,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:11:53,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:11:53,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:11:53,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:11:53,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:11:53,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:11:53,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 21 transitions, 104 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:11:53,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:11:53,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:11:53,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:11:53,655 INFO L124 PetriNetUnfolderBase]: 26/67 cut-off events. [2024-06-27 20:11:53,655 INFO L125 PetriNetUnfolderBase]: For 524/524 co-relation queries the response was YES. [2024-06-27 20:11:53,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 67 events. 26/67 cut-off events. For 524/524 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 98 event pairs, 0 based on Foata normal form. 6/72 useless extension candidates. Maximal degree in co-relation 173. Up to 24 conditions per place. [2024-06-27 20:11:53,655 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 0 selfloop transitions, 0 changer transitions 30/30 dead transitions. [2024-06-27 20:11:53,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 30 transitions, 152 flow [2024-06-27 20:11:53,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:11:53,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:11:53,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 89 transitions. [2024-06-27 20:11:53,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24722222222222223 [2024-06-27 20:11:53,656 INFO L175 Difference]: Start difference. First operand has 66 places, 21 transitions, 104 flow. Second operand 12 states and 89 transitions. [2024-06-27 20:11:53,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 30 transitions, 152 flow [2024-06-27 20:11:53,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 30 transitions, 122 flow, removed 2 selfloop flow, removed 15 redundant places. [2024-06-27 20:11:53,656 INFO L231 Difference]: Finished difference. Result has 46 places, 0 transitions, 0 flow [2024-06-27 20:11:53,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=46, PETRI_TRANSITIONS=0} [2024-06-27 20:11:53,657 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 17 predicate places. [2024-06-27 20:11:53,657 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 0 transitions, 0 flow [2024-06-27 20:11:53,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:11:53,659 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-27 20:11:53,659 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-27 20:11:53,660 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-27 20:11:53,660 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-27 20:11:53,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-27 20:11:53,660 INFO L445 BasicCegarLoop]: Path program histogram: [19, 16, 16, 15, 12, 9, 7, 6, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:11:53,663 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 20:11:53,663 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 20:11:53,666 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-27 20:11:53,666 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-27 20:11:53,666 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 08:11:53 BasicIcfg [2024-06-27 20:11:53,667 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 20:11:53,667 INFO L158 Benchmark]: Toolchain (without parser) took 146412.36ms. Allocated memory was 192.9MB in the beginning and 885.0MB in the end (delta: 692.1MB). Free memory was 153.9MB in the beginning and 817.2MB in the end (delta: -663.3MB). Peak memory consumption was 29.8MB. Max. memory is 16.1GB. [2024-06-27 20:11:53,667 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 125.8MB. Free memory was 85.9MB in the beginning and 85.8MB in the end (delta: 118.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 20:11:53,667 INFO L158 Benchmark]: Witness Parser took 0.17ms. Allocated memory is still 192.9MB. Free memory was 159.8MB in the beginning and 158.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 20:11:53,667 INFO L158 Benchmark]: CACSL2BoogieTranslator took 587.53ms. Allocated memory is still 192.9MB. Free memory was 153.9MB in the beginning and 119.2MB in the end (delta: 34.6MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2024-06-27 20:11:53,668 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.56ms. Allocated memory is still 192.9MB. Free memory was 119.2MB in the beginning and 116.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 20:11:53,668 INFO L158 Benchmark]: Boogie Preprocessor took 78.11ms. Allocated memory is still 192.9MB. Free memory was 116.1MB in the beginning and 113.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-27 20:11:53,668 INFO L158 Benchmark]: RCFGBuilder took 664.00ms. Allocated memory is still 192.9MB. Free memory was 113.0MB in the beginning and 55.3MB in the end (delta: 57.7MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. [2024-06-27 20:11:53,668 INFO L158 Benchmark]: TraceAbstraction took 145010.16ms. Allocated memory was 192.9MB in the beginning and 885.0MB in the end (delta: 692.1MB). Free memory was 55.3MB in the beginning and 817.2MB in the end (delta: -761.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 20:11:53,669 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 125.8MB. Free memory was 85.9MB in the beginning and 85.8MB in the end (delta: 118.9kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.17ms. Allocated memory is still 192.9MB. Free memory was 159.8MB in the beginning and 158.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 587.53ms. Allocated memory is still 192.9MB. Free memory was 153.9MB in the beginning and 119.2MB in the end (delta: 34.6MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.56ms. Allocated memory is still 192.9MB. Free memory was 119.2MB in the beginning and 116.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 78.11ms. Allocated memory is still 192.9MB. Free memory was 116.1MB in the beginning and 113.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 664.00ms. Allocated memory is still 192.9MB. Free memory was 113.0MB in the beginning and 55.3MB in the end (delta: 57.7MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. * TraceAbstraction took 145010.16ms. Allocated memory was 192.9MB in the beginning and 885.0MB in the end (delta: 692.1MB). Free memory was 55.3MB in the beginning and 817.2MB in the end (delta: -761.9MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 813]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 814]: 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, 48 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: 144.9s, OverallIterations: 131, TraceHistogramMax: 1, PathProgramHistogramMax: 19, EmptinessCheckTime: 0.0s, AutomataDifference: 51.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6623 SdHoareTripleChecker+Valid, 25.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5637 mSDsluCounter, 4193 SdHoareTripleChecker+Invalid, 21.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3550 mSDsCounter, 1448 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 43792 IncrementalHoareTripleChecker+Invalid, 45240 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1448 mSolverCounterUnsat, 643 mSDtfsCounter, 43792 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1350 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1345 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2629 ImplicationChecksByTransitivity, 32.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2211occurred in iteration=77, InterpolantAutomatonStates: 1228, 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: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 91.7s InterpolantComputationTime, 2042 NumberOfCodeBlocks, 2042 NumberOfCodeBlocksAsserted, 131 NumberOfCheckSat, 1911 ConstructedInterpolants, 0 QuantifiedInterpolants, 81692 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 131 InterpolantComputations, 131 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 20:11:53,702 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