./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi010.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/rfi010.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bcb38a6f 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/rfi010.i ./goblint.2024-05-21_14-57-05.files/protection/rfi010.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-bcb38a6-m [2024-06-04 15:29:50,627 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-04 15:29:50,693 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-04 15:29:50,697 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-04 15:29:50,698 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-04 15:29:50,714 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-04 15:29:50,716 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-04 15:29:50,716 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-04 15:29:50,717 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-04 15:29:50,718 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-04 15:29:50,718 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-04 15:29:50,718 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-04 15:29:50,719 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-04 15:29:50,720 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-04 15:29:50,720 INFO L153 SettingsManager]: * Use SBE=true [2024-06-04 15:29:50,721 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-04 15:29:50,721 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-04 15:29:50,724 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-04 15:29:50,724 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-04 15:29:50,724 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-04 15:29:50,724 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-04 15:29:50,725 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-04 15:29:50,725 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-04 15:29:50,725 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-04 15:29:50,725 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-04 15:29:50,726 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-04 15:29:50,726 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-04 15:29:50,726 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-04 15:29:50,739 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-04 15:29:50,740 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-04 15:29:50,740 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-04 15:29:50,740 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-04 15:29:50,740 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 15:29:50,741 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-04 15:29:50,741 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-04 15:29:50,741 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-04 15:29:50,742 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-04 15:29:50,742 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-04 15:29:50,742 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-04 15:29:50,742 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-04 15:29:50,742 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-04 15:29:50,743 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-04 15:29:50,743 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-04 15:29:50,743 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-04 15:29:50,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-04 15:29:51,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-04 15:29:51,005 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-04 15:29:51,006 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-04 15:29:51,006 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-04 15:29:51,007 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/rfi010.yml/witness.yml [2024-06-04 15:29:51,108 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-04 15:29:51,109 INFO L274 PluginConnector]: CDTParser initialized [2024-06-04 15:29:51,109 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi010.i [2024-06-04 15:29:52,093 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-04 15:29:52,318 INFO L384 CDTParser]: Found 1 translation units. [2024-06-04 15:29:52,318 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi010.i [2024-06-04 15:29:52,330 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fd00d744/2db81143f8d14580bf04d17afb33e397/FLAG0ce160227 [2024-06-04 15:29:52,341 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fd00d744/2db81143f8d14580bf04d17afb33e397 [2024-06-04 15:29:52,341 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-04 15:29:52,342 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-04 15:29:52,343 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-04 15:29:52,343 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-04 15:29:52,348 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-04 15:29:52,349 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 03:29:51" (1/2) ... [2024-06-04 15:29:52,349 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e4144ad and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:29:52, skipping insertion in model container [2024-06-04 15:29:52,349 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 03:29:51" (1/2) ... [2024-06-04 15:29:52,350 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@54f678d4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:29:52, skipping insertion in model container [2024-06-04 15:29:52,351 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 03:29:52" (2/2) ... [2024-06-04 15:29:52,351 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e4144ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:29:52, skipping insertion in model container [2024-06-04 15:29:52,351 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 03:29:52" (2/2) ... [2024-06-04 15:29:52,351 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-04 15:29:52,429 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-04 15:29:52,430 INFO L97 edCorrectnessWitness]: Location invariant before [L827-L827] (((((((((((((((! multithreaded || y$r_buff0_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) [2024-06-04 15:29:52,431 INFO L97 edCorrectnessWitness]: Location invariant before [L826-L826] (((((((((((((((! multithreaded || y$r_buff0_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) [2024-06-04 15:29:52,431 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-04 15:29:52,431 INFO L106 edCorrectnessWitness]: ghost_update [L824-L824] multithreaded = 1; [2024-06-04 15:29:52,469 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-04 15:29:52,800 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 15:29:52,808 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-04 15:29:52,892 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 15:29:52,921 INFO L206 MainTranslator]: Completed translation [2024-06-04 15:29:52,922 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:29:52 WrapperNode [2024-06-04 15:29:52,922 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-04 15:29:52,923 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-04 15:29:52,923 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-04 15:29:52,923 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-04 15:29:52,929 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:29:52" (1/1) ... [2024-06-04 15:29:52,942 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:29:52" (1/1) ... [2024-06-04 15:29:52,963 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 136 [2024-06-04 15:29:52,963 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-04 15:29:52,964 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-04 15:29:52,964 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-04 15:29:52,964 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-04 15:29:52,972 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:29:52" (1/1) ... [2024-06-04 15:29:52,972 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:29:52" (1/1) ... [2024-06-04 15:29:52,975 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:29:52" (1/1) ... [2024-06-04 15:29:52,986 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]. [2024-06-04 15:29:52,986 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:29:52" (1/1) ... [2024-06-04 15:29:52,986 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:29:52" (1/1) ... [2024-06-04 15:29:52,994 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:29:52" (1/1) ... [2024-06-04 15:29:52,995 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:29:52" (1/1) ... [2024-06-04 15:29:52,996 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:29:52" (1/1) ... [2024-06-04 15:29:52,997 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:29:52" (1/1) ... [2024-06-04 15:29:53,000 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-04 15:29:53,000 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-04 15:29:53,000 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-04 15:29:53,000 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-04 15:29:53,001 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:29:52" (1/1) ... [2024-06-04 15:29:53,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 15:29:53,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 15:29:53,025 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) [2024-06-04 15:29:53,029 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 [2024-06-04 15:29:53,104 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-04 15:29:53,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-04 15:29:53,105 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-04 15:29:53,105 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-04 15:29:53,105 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-04 15:29:53,105 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-04 15:29:53,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-04 15:29:53,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-04 15:29:53,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-04 15:29:53,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-04 15:29:53,107 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-04 15:29:53,220 INFO L244 CfgBuilder]: Building ICFG [2024-06-04 15:29:53,222 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-04 15:29:53,555 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-04 15:29:53,555 INFO L293 CfgBuilder]: Performing block encoding [2024-06-04 15:29:53,658 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-04 15:29:53,658 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-04 15:29:53,658 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 03:29:53 BoogieIcfgContainer [2024-06-04 15:29:53,658 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-04 15:29:53,659 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-04 15:29:53,659 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-04 15:29:53,662 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-04 15:29:53,662 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 03:29:51" (1/4) ... [2024-06-04 15:29:53,662 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61ec0532 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 03:29:53, skipping insertion in model container [2024-06-04 15:29:53,662 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.06 03:29:52" (2/4) ... [2024-06-04 15:29:53,662 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61ec0532 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 03:29:53, skipping insertion in model container [2024-06-04 15:29:53,662 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:29:52" (3/4) ... [2024-06-04 15:29:53,663 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61ec0532 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 03:29:53, skipping insertion in model container [2024-06-04 15:29:53,663 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 03:29:53" (4/4) ... [2024-06-04 15:29:53,663 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi010.i [2024-06-04 15:29:53,678 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-04 15:29:53,679 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-04 15:29:53,679 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-04 15:29:53,713 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-04 15:29:53,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 32 transitions, 72 flow [2024-06-04 15:29:53,767 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-06-04 15:29:53,767 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 15:29:53,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 30 events. 0/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 42 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-04 15:29:53,769 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 32 transitions, 72 flow [2024-06-04 15:29:53,771 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 24 transitions, 54 flow [2024-06-04 15:29:53,780 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-04 15:29:53,791 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;@3fe6eaf2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-04 15:29:53,791 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-04 15:29:53,794 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-04 15:29:53,795 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-04 15:29:53,796 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 15:29:53,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:53,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-04 15:29:53,797 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)] === [2024-06-04 15:29:53,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:53,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1790250860, now seen corresponding path program 1 times [2024-06-04 15:29:53,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:53,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841333556] [2024-06-04 15:29:53,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:53,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:53,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:54,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:54,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:54,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841333556] [2024-06-04 15:29:54,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841333556] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:54,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:54,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-04 15:29:54,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265900516] [2024-06-04 15:29:54,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:54,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-04 15:29:54,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:54,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-04 15:29:54,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-04 15:29:54,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-06-04 15:29:54,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:54,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:54,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-06-04 15:29:54,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:54,876 INFO L124 PetriNetUnfolderBase]: 131/262 cut-off events. [2024-06-04 15:29:54,877 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-04 15:29:54,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 520 conditions, 262 events. 131/262 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1035 event pairs, 75 based on Foata normal form. 1/251 useless extension candidates. Maximal degree in co-relation 506. Up to 235 conditions per place. [2024-06-04 15:29:54,880 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 22 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2024-06-04 15:29:54,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 119 flow [2024-06-04 15:29:54,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-04 15:29:54,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-04 15:29:54,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 57 transitions. [2024-06-04 15:29:54,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.59375 [2024-06-04 15:29:54,890 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 54 flow. Second operand 3 states and 57 transitions. [2024-06-04 15:29:54,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 119 flow [2024-06-04 15:29:54,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-04 15:29:54,893 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 73 flow [2024-06-04 15:29:54,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2024-06-04 15:29:54,897 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-04 15:29:54,897 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 73 flow [2024-06-04 15:29:54,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:54,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:54,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:54,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-04 15:29:54,898 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)] === [2024-06-04 15:29:54,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:54,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1850839667, now seen corresponding path program 1 times [2024-06-04 15:29:54,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:54,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074028935] [2024-06-04 15:29:54,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:54,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:54,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:55,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:55,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:55,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074028935] [2024-06-04 15:29:55,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074028935] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:55,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:55,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-04 15:29:55,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165347425] [2024-06-04 15:29:55,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:55,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-04 15:29:55,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:55,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-04 15:29:55,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-04 15:29:55,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-04 15:29:55,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:55,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:55,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-04 15:29:55,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:55,416 INFO L124 PetriNetUnfolderBase]: 147/281 cut-off events. [2024-06-04 15:29:55,416 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2024-06-04 15:29:55,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 643 conditions, 281 events. 147/281 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1054 event pairs, 59 based on Foata normal form. 4/284 useless extension candidates. Maximal degree in co-relation 628. Up to 244 conditions per place. [2024-06-04 15:29:55,418 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 28 selfloop transitions, 5 changer transitions 0/37 dead transitions. [2024-06-04 15:29:55,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 37 transitions, 167 flow [2024-06-04 15:29:55,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-04 15:29:55,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-04 15:29:55,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 71 transitions. [2024-06-04 15:29:55,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5546875 [2024-06-04 15:29:55,420 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 73 flow. Second operand 4 states and 71 transitions. [2024-06-04 15:29:55,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 37 transitions, 167 flow [2024-06-04 15:29:55,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 37 transitions, 164 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-04 15:29:55,421 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 97 flow [2024-06-04 15:29:55,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2024-06-04 15:29:55,422 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-06-04 15:29:55,422 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 97 flow [2024-06-04 15:29:55,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:55,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:55,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:55,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-04 15:29:55,423 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:55,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:55,423 INFO L85 PathProgramCache]: Analyzing trace with hash -956028385, now seen corresponding path program 1 times [2024-06-04 15:29:55,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:55,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317491448] [2024-06-04 15:29:55,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:55,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:55,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:56,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:56,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:56,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317491448] [2024-06-04 15:29:56,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317491448] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:56,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:56,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 15:29:56,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528436565] [2024-06-04 15:29:56,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:56,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 15:29:56,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:56,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 15:29:56,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-04 15:29:56,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-04 15:29:56,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 97 flow. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 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) [2024-06-04 15:29:56,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:56,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-04 15:29:56,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:56,205 INFO L124 PetriNetUnfolderBase]: 123/247 cut-off events. [2024-06-04 15:29:56,205 INFO L125 PetriNetUnfolderBase]: For 142/142 co-relation queries the response was YES. [2024-06-04 15:29:56,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 628 conditions, 247 events. 123/247 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 933 event pairs, 62 based on Foata normal form. 1/247 useless extension candidates. Maximal degree in co-relation 611. Up to 219 conditions per place. [2024-06-04 15:29:56,207 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 24 selfloop transitions, 6 changer transitions 0/35 dead transitions. [2024-06-04 15:29:56,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 35 transitions, 175 flow [2024-06-04 15:29:56,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 15:29:56,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 15:29:56,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 74 transitions. [2024-06-04 15:29:56,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4625 [2024-06-04 15:29:56,209 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 97 flow. Second operand 5 states and 74 transitions. [2024-06-04 15:29:56,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 35 transitions, 175 flow [2024-06-04 15:29:56,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 35 transitions, 166 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-04 15:29:56,210 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 115 flow [2024-06-04 15:29:56,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=115, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2024-06-04 15:29:56,211 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2024-06-04 15:29:56,211 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 115 flow [2024-06-04 15:29:56,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 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) [2024-06-04 15:29:56,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:56,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:56,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-04 15:29:56,212 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)] === [2024-06-04 15:29:56,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:56,212 INFO L85 PathProgramCache]: Analyzing trace with hash -2044248265, now seen corresponding path program 1 times [2024-06-04 15:29:56,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:56,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005287466] [2024-06-04 15:29:56,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:56,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:56,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:57,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:57,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:57,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005287466] [2024-06-04 15:29:57,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005287466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:57,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:57,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 15:29:57,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672731341] [2024-06-04 15:29:57,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:57,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 15:29:57,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:57,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 15:29:57,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-04 15:29:57,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-04 15:29:57,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 115 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 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) [2024-06-04 15:29:57,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:57,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-04 15:29:57,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:57,341 INFO L124 PetriNetUnfolderBase]: 141/270 cut-off events. [2024-06-04 15:29:57,341 INFO L125 PetriNetUnfolderBase]: For 261/261 co-relation queries the response was YES. [2024-06-04 15:29:57,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 742 conditions, 270 events. 141/270 cut-off events. For 261/261 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 994 event pairs, 24 based on Foata normal form. 4/273 useless extension candidates. Maximal degree in co-relation 723. Up to 215 conditions per place. [2024-06-04 15:29:57,343 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 33 selfloop transitions, 8 changer transitions 0/45 dead transitions. [2024-06-04 15:29:57,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 45 transitions, 231 flow [2024-06-04 15:29:57,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:29:57,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:29:57,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 95 transitions. [2024-06-04 15:29:57,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4947916666666667 [2024-06-04 15:29:57,344 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 115 flow. Second operand 6 states and 95 transitions. [2024-06-04 15:29:57,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 45 transitions, 231 flow [2024-06-04 15:29:57,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 45 transitions, 220 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-04 15:29:57,346 INFO L231 Difference]: Finished difference. Result has 41 places, 31 transitions, 129 flow [2024-06-04 15:29:57,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=129, PETRI_PLACES=41, PETRI_TRANSITIONS=31} [2024-06-04 15:29:57,347 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 10 predicate places. [2024-06-04 15:29:57,347 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 129 flow [2024-06-04 15:29:57,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 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) [2024-06-04 15:29:57,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:57,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:57,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-04 15:29:57,348 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)] === [2024-06-04 15:29:57,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:57,348 INFO L85 PathProgramCache]: Analyzing trace with hash 427891856, now seen corresponding path program 1 times [2024-06-04 15:29:57,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:57,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568215302] [2024-06-04 15:29:57,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:57,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:57,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:58,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:58,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:58,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568215302] [2024-06-04 15:29:58,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568215302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:58,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:58,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:29:58,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962460700] [2024-06-04 15:29:58,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:58,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:29:58,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:58,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:29:58,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:29:58,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-04 15:29:58,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 129 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:58,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:58,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-04 15:29:58,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:58,191 INFO L124 PetriNetUnfolderBase]: 115/237 cut-off events. [2024-06-04 15:29:58,191 INFO L125 PetriNetUnfolderBase]: For 353/353 co-relation queries the response was YES. [2024-06-04 15:29:58,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 695 conditions, 237 events. 115/237 cut-off events. For 353/353 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 882 event pairs, 32 based on Foata normal form. 2/238 useless extension candidates. Maximal degree in co-relation 675. Up to 199 conditions per place. [2024-06-04 15:29:58,192 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 27 selfloop transitions, 8 changer transitions 0/40 dead transitions. [2024-06-04 15:29:58,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 40 transitions, 223 flow [2024-06-04 15:29:58,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:29:58,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:29:58,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2024-06-04 15:29:58,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4479166666666667 [2024-06-04 15:29:58,197 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 129 flow. Second operand 6 states and 86 transitions. [2024-06-04 15:29:58,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 40 transitions, 223 flow [2024-06-04 15:29:58,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 40 transitions, 207 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-04 15:29:58,199 INFO L231 Difference]: Finished difference. Result has 44 places, 33 transitions, 146 flow [2024-06-04 15:29:58,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=113, 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=146, PETRI_PLACES=44, PETRI_TRANSITIONS=33} [2024-06-04 15:29:58,199 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 13 predicate places. [2024-06-04 15:29:58,200 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 33 transitions, 146 flow [2024-06-04 15:29:58,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:58,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:58,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:58,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-04 15:29:58,201 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)] === [2024-06-04 15:29:58,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:58,201 INFO L85 PathProgramCache]: Analyzing trace with hash 841772222, now seen corresponding path program 1 times [2024-06-04 15:29:58,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:58,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788702868] [2024-06-04 15:29:58,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:58,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:58,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:58,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:58,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:58,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788702868] [2024-06-04 15:29:58,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788702868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:58,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:58,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:29:58,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511848196] [2024-06-04 15:29:58,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:58,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:29:58,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:58,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:29:58,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:29:58,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:29:58,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 33 transitions, 146 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:58,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:58,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:29:58,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:58,893 INFO L124 PetriNetUnfolderBase]: 141/275 cut-off events. [2024-06-04 15:29:58,894 INFO L125 PetriNetUnfolderBase]: For 518/518 co-relation queries the response was YES. [2024-06-04 15:29:58,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 861 conditions, 275 events. 141/275 cut-off events. For 518/518 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1032 event pairs, 38 based on Foata normal form. 2/276 useless extension candidates. Maximal degree in co-relation 839. Up to 237 conditions per place. [2024-06-04 15:29:58,895 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 33 selfloop transitions, 8 changer transitions 0/45 dead transitions. [2024-06-04 15:29:58,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 45 transitions, 262 flow [2024-06-04 15:29:58,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:29:58,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:29:58,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 84 transitions. [2024-06-04 15:29:58,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-04 15:29:58,896 INFO L175 Difference]: Start difference. First operand has 44 places, 33 transitions, 146 flow. Second operand 6 states and 84 transitions. [2024-06-04 15:29:58,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 45 transitions, 262 flow [2024-06-04 15:29:58,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 45 transitions, 245 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-04 15:29:58,898 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 162 flow [2024-06-04 15:29:58,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=162, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2024-06-04 15:29:58,899 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 15 predicate places. [2024-06-04 15:29:58,899 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 162 flow [2024-06-04 15:29:58,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:58,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:58,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:58,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-04 15:29:58,900 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)] === [2024-06-04 15:29:58,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:58,900 INFO L85 PathProgramCache]: Analyzing trace with hash 379737470, now seen corresponding path program 2 times [2024-06-04 15:29:58,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:58,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062111622] [2024-06-04 15:29:58,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:58,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:58,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:59,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:59,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:59,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062111622] [2024-06-04 15:29:59,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062111622] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:59,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:59,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:29:59,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668337098] [2024-06-04 15:29:59,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:59,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:29:59,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:59,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:29:59,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:29:59,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:29:59,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 162 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:59,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:59,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:29:59,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:59,585 INFO L124 PetriNetUnfolderBase]: 142/276 cut-off events. [2024-06-04 15:29:59,585 INFO L125 PetriNetUnfolderBase]: For 686/686 co-relation queries the response was YES. [2024-06-04 15:29:59,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 917 conditions, 276 events. 142/276 cut-off events. For 686/686 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1033 event pairs, 42 based on Foata normal form. 2/275 useless extension candidates. Maximal degree in co-relation 894. Up to 230 conditions per place. [2024-06-04 15:29:59,587 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 30 selfloop transitions, 11 changer transitions 0/45 dead transitions. [2024-06-04 15:29:59,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 45 transitions, 278 flow [2024-06-04 15:29:59,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:29:59,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:29:59,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 84 transitions. [2024-06-04 15:29:59,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-04 15:29:59,589 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 162 flow. Second operand 6 states and 84 transitions. [2024-06-04 15:29:59,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 45 transitions, 278 flow [2024-06-04 15:29:59,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 45 transitions, 261 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-04 15:29:59,591 INFO L231 Difference]: Finished difference. Result has 48 places, 37 transitions, 188 flow [2024-06-04 15:29:59,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=188, PETRI_PLACES=48, PETRI_TRANSITIONS=37} [2024-06-04 15:29:59,592 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2024-06-04 15:29:59,592 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 37 transitions, 188 flow [2024-06-04 15:29:59,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:59,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:59,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:59,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-04 15:29:59,592 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)] === [2024-06-04 15:29:59,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:59,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1014541167, now seen corresponding path program 1 times [2024-06-04 15:29:59,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:59,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313337551] [2024-06-04 15:29:59,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:59,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:59,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:00,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:00,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:00,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313337551] [2024-06-04 15:30:00,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313337551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:00,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:00,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:30:00,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107218093] [2024-06-04 15:30:00,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:00,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:30:00,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:00,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:30:00,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:30:00,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:30:00,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 37 transitions, 188 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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) [2024-06-04 15:30:00,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:00,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:30:00,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:00,618 INFO L124 PetriNetUnfolderBase]: 158/309 cut-off events. [2024-06-04 15:30:00,618 INFO L125 PetriNetUnfolderBase]: For 917/917 co-relation queries the response was YES. [2024-06-04 15:30:00,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1078 conditions, 309 events. 158/309 cut-off events. For 917/917 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1222 event pairs, 38 based on Foata normal form. 2/310 useless extension candidates. Maximal degree in co-relation 1054. Up to 258 conditions per place. [2024-06-04 15:30:00,620 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 39 selfloop transitions, 14 changer transitions 0/57 dead transitions. [2024-06-04 15:30:00,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 57 transitions, 370 flow [2024-06-04 15:30:00,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:30:00,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:30:00,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 108 transitions. [2024-06-04 15:30:00,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-04 15:30:00,622 INFO L175 Difference]: Start difference. First operand has 48 places, 37 transitions, 188 flow. Second operand 8 states and 108 transitions. [2024-06-04 15:30:00,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 57 transitions, 370 flow [2024-06-04 15:30:00,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 57 transitions, 335 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-04 15:30:00,624 INFO L231 Difference]: Finished difference. Result has 54 places, 45 transitions, 250 flow [2024-06-04 15:30:00,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=250, PETRI_PLACES=54, PETRI_TRANSITIONS=45} [2024-06-04 15:30:00,624 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 23 predicate places. [2024-06-04 15:30:00,624 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 45 transitions, 250 flow [2024-06-04 15:30:00,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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) [2024-06-04 15:30:00,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:00,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:00,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-04 15:30:00,625 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)] === [2024-06-04 15:30:00,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:00,626 INFO L85 PathProgramCache]: Analyzing trace with hash 325135825, now seen corresponding path program 2 times [2024-06-04 15:30:00,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:00,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145615491] [2024-06-04 15:30:00,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:00,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:00,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:01,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:01,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:01,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145615491] [2024-06-04 15:30:01,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145615491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:01,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:01,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:30:01,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509151953] [2024-06-04 15:30:01,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:01,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:30:01,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:01,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:30:01,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:30:01,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:30:01,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 250 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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) [2024-06-04 15:30:01,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:01,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:30:01,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:01,605 INFO L124 PetriNetUnfolderBase]: 164/319 cut-off events. [2024-06-04 15:30:01,606 INFO L125 PetriNetUnfolderBase]: For 1191/1191 co-relation queries the response was YES. [2024-06-04 15:30:01,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1215 conditions, 319 events. 164/319 cut-off events. For 1191/1191 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1264 event pairs, 37 based on Foata normal form. 2/320 useless extension candidates. Maximal degree in co-relation 1188. Up to 256 conditions per place. [2024-06-04 15:30:01,608 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 36 selfloop transitions, 18 changer transitions 0/58 dead transitions. [2024-06-04 15:30:01,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 58 transitions, 408 flow [2024-06-04 15:30:01,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:30:01,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:30:01,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 96 transitions. [2024-06-04 15:30:01,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-04 15:30:01,609 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 250 flow. Second operand 7 states and 96 transitions. [2024-06-04 15:30:01,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 58 transitions, 408 flow [2024-06-04 15:30:01,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 58 transitions, 381 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-04 15:30:01,611 INFO L231 Difference]: Finished difference. Result has 57 places, 48 transitions, 295 flow [2024-06-04 15:30:01,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=295, PETRI_PLACES=57, PETRI_TRANSITIONS=48} [2024-06-04 15:30:01,612 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 26 predicate places. [2024-06-04 15:30:01,613 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 48 transitions, 295 flow [2024-06-04 15:30:01,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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) [2024-06-04 15:30:01,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:01,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:01,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-04 15:30:01,613 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)] === [2024-06-04 15:30:01,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:01,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1113039599, now seen corresponding path program 3 times [2024-06-04 15:30:01,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:01,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707002954] [2024-06-04 15:30:01,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:01,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:01,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:02,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:02,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:02,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707002954] [2024-06-04 15:30:02,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707002954] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:02,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:02,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:30:02,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851727183] [2024-06-04 15:30:02,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:02,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:30:02,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:02,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:30:02,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:30:02,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:30:02,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 295 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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) [2024-06-04 15:30:02,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:02,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:30:02,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:02,587 INFO L124 PetriNetUnfolderBase]: 170/329 cut-off events. [2024-06-04 15:30:02,588 INFO L125 PetriNetUnfolderBase]: For 1556/1556 co-relation queries the response was YES. [2024-06-04 15:30:02,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1366 conditions, 329 events. 170/329 cut-off events. For 1556/1556 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1307 event pairs, 40 based on Foata normal form. 2/327 useless extension candidates. Maximal degree in co-relation 1338. Up to 263 conditions per place. [2024-06-04 15:30:02,591 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 38 selfloop transitions, 18 changer transitions 0/60 dead transitions. [2024-06-04 15:30:02,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 60 transitions, 467 flow [2024-06-04 15:30:02,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:30:02,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:30:02,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 96 transitions. [2024-06-04 15:30:02,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-04 15:30:02,593 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 295 flow. Second operand 7 states and 96 transitions. [2024-06-04 15:30:02,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 60 transitions, 467 flow [2024-06-04 15:30:02,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 60 transitions, 413 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-04 15:30:02,597 INFO L231 Difference]: Finished difference. Result has 59 places, 51 transitions, 319 flow [2024-06-04 15:30:02,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=319, PETRI_PLACES=59, PETRI_TRANSITIONS=51} [2024-06-04 15:30:02,600 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 28 predicate places. [2024-06-04 15:30:02,600 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 51 transitions, 319 flow [2024-06-04 15:30:02,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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) [2024-06-04 15:30:02,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:02,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:02,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-04 15:30:02,601 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)] === [2024-06-04 15:30:02,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:02,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1112772689, now seen corresponding path program 4 times [2024-06-04 15:30:02,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:02,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935122638] [2024-06-04 15:30:02,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:02,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:02,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:03,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:03,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:03,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935122638] [2024-06-04 15:30:03,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935122638] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:03,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:03,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:30:03,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093686906] [2024-06-04 15:30:03,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:03,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:30:03,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:03,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:30:03,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:30:03,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:30:03,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 51 transitions, 319 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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) [2024-06-04 15:30:03,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:03,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:30:03,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:03,546 INFO L124 PetriNetUnfolderBase]: 168/326 cut-off events. [2024-06-04 15:30:03,546 INFO L125 PetriNetUnfolderBase]: For 1472/1472 co-relation queries the response was YES. [2024-06-04 15:30:03,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1344 conditions, 326 events. 168/326 cut-off events. For 1472/1472 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1320 event pairs, 40 based on Foata normal form. 1/323 useless extension candidates. Maximal degree in co-relation 1315. Up to 242 conditions per place. [2024-06-04 15:30:03,548 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 32 selfloop transitions, 27 changer transitions 0/63 dead transitions. [2024-06-04 15:30:03,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 63 transitions, 487 flow [2024-06-04 15:30:03,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:30:03,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:30:03,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 96 transitions. [2024-06-04 15:30:03,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-04 15:30:03,550 INFO L175 Difference]: Start difference. First operand has 59 places, 51 transitions, 319 flow. Second operand 7 states and 96 transitions. [2024-06-04 15:30:03,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 63 transitions, 487 flow [2024-06-04 15:30:03,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 63 transitions, 441 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-04 15:30:03,553 INFO L231 Difference]: Finished difference. Result has 62 places, 55 transitions, 377 flow [2024-06-04 15:30:03,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=377, PETRI_PLACES=62, PETRI_TRANSITIONS=55} [2024-06-04 15:30:03,553 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 31 predicate places. [2024-06-04 15:30:03,554 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 55 transitions, 377 flow [2024-06-04 15:30:03,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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) [2024-06-04 15:30:03,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:03,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:03,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-04 15:30:03,555 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)] === [2024-06-04 15:30:03,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:03,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1395542115, now seen corresponding path program 1 times [2024-06-04 15:30:03,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:03,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719176653] [2024-06-04 15:30:03,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:03,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:03,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:04,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:04,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:04,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719176653] [2024-06-04 15:30:04,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719176653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:04,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:04,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:30:04,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011694696] [2024-06-04 15:30:04,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:04,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:30:04,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:04,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:30:04,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:30:04,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:30:04,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 55 transitions, 377 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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) [2024-06-04 15:30:04,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:04,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:30:04,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:04,553 INFO L124 PetriNetUnfolderBase]: 166/325 cut-off events. [2024-06-04 15:30:04,554 INFO L125 PetriNetUnfolderBase]: For 1742/1742 co-relation queries the response was YES. [2024-06-04 15:30:04,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1421 conditions, 325 events. 166/325 cut-off events. For 1742/1742 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1315 event pairs, 36 based on Foata normal form. 1/325 useless extension candidates. Maximal degree in co-relation 1390. Up to 269 conditions per place. [2024-06-04 15:30:04,556 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 53 selfloop transitions, 12 changer transitions 0/69 dead transitions. [2024-06-04 15:30:04,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 69 transitions, 561 flow [2024-06-04 15:30:04,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:30:04,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:30:04,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 97 transitions. [2024-06-04 15:30:04,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4330357142857143 [2024-06-04 15:30:04,557 INFO L175 Difference]: Start difference. First operand has 62 places, 55 transitions, 377 flow. Second operand 7 states and 97 transitions. [2024-06-04 15:30:04,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 69 transitions, 561 flow [2024-06-04 15:30:04,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 69 transitions, 533 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-04 15:30:04,561 INFO L231 Difference]: Finished difference. Result has 66 places, 57 transitions, 402 flow [2024-06-04 15:30:04,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=402, PETRI_PLACES=66, PETRI_TRANSITIONS=57} [2024-06-04 15:30:04,563 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 35 predicate places. [2024-06-04 15:30:04,563 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 57 transitions, 402 flow [2024-06-04 15:30:04,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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) [2024-06-04 15:30:04,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:04,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:04,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-04 15:30:04,565 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)] === [2024-06-04 15:30:04,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:04,565 INFO L85 PathProgramCache]: Analyzing trace with hash 2039189501, now seen corresponding path program 1 times [2024-06-04 15:30:04,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:04,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278430554] [2024-06-04 15:30:04,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:04,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:04,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:05,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:05,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:05,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278430554] [2024-06-04 15:30:05,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278430554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:05,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:05,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:30:05,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518499623] [2024-06-04 15:30:05,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:05,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:30:05,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:05,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:30:05,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:30:05,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:30:05,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 57 transitions, 402 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:05,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:05,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:30:05,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:05,616 INFO L124 PetriNetUnfolderBase]: 172/337 cut-off events. [2024-06-04 15:30:05,616 INFO L125 PetriNetUnfolderBase]: For 2038/2038 co-relation queries the response was YES. [2024-06-04 15:30:05,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1527 conditions, 337 events. 172/337 cut-off events. For 2038/2038 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1366 event pairs, 35 based on Foata normal form. 2/338 useless extension candidates. Maximal degree in co-relation 1494. Up to 260 conditions per place. [2024-06-04 15:30:05,618 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 46 selfloop transitions, 21 changer transitions 0/71 dead transitions. [2024-06-04 15:30:05,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 71 transitions, 598 flow [2024-06-04 15:30:05,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:30:05,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:30:05,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 108 transitions. [2024-06-04 15:30:05,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-04 15:30:05,620 INFO L175 Difference]: Start difference. First operand has 66 places, 57 transitions, 402 flow. Second operand 8 states and 108 transitions. [2024-06-04 15:30:05,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 71 transitions, 598 flow [2024-06-04 15:30:05,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 71 transitions, 561 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-04 15:30:05,624 INFO L231 Difference]: Finished difference. Result has 69 places, 60 transitions, 446 flow [2024-06-04 15:30:05,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=446, PETRI_PLACES=69, PETRI_TRANSITIONS=60} [2024-06-04 15:30:05,625 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 38 predicate places. [2024-06-04 15:30:05,625 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 60 transitions, 446 flow [2024-06-04 15:30:05,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:05,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:05,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:05,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-04 15:30:05,626 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)] === [2024-06-04 15:30:05,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:05,626 INFO L85 PathProgramCache]: Analyzing trace with hash -2083048895, now seen corresponding path program 2 times [2024-06-04 15:30:05,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:05,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864830813] [2024-06-04 15:30:05,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:05,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:05,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:06,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:06,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:06,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864830813] [2024-06-04 15:30:06,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864830813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:06,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:06,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:30:06,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151043852] [2024-06-04 15:30:06,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:06,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:30:06,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:06,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:30:06,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:30:06,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:30:06,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 60 transitions, 446 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:06,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:06,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:30:06,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:06,736 INFO L124 PetriNetUnfolderBase]: 175/342 cut-off events. [2024-06-04 15:30:06,736 INFO L125 PetriNetUnfolderBase]: For 2388/2388 co-relation queries the response was YES. [2024-06-04 15:30:06,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1639 conditions, 342 events. 175/342 cut-off events. For 2388/2388 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1402 event pairs, 39 based on Foata normal form. 1/342 useless extension candidates. Maximal degree in co-relation 1605. Up to 298 conditions per place. [2024-06-04 15:30:06,738 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 56 selfloop transitions, 12 changer transitions 0/72 dead transitions. [2024-06-04 15:30:06,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 72 transitions, 628 flow [2024-06-04 15:30:06,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:30:06,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:30:06,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-04 15:30:06,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-04 15:30:06,739 INFO L175 Difference]: Start difference. First operand has 69 places, 60 transitions, 446 flow. Second operand 8 states and 102 transitions. [2024-06-04 15:30:06,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 72 transitions, 628 flow [2024-06-04 15:30:06,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 72 transitions, 571 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-04 15:30:06,743 INFO L231 Difference]: Finished difference. Result has 72 places, 64 transitions, 453 flow [2024-06-04 15:30:06,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=453, PETRI_PLACES=72, PETRI_TRANSITIONS=64} [2024-06-04 15:30:06,743 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 41 predicate places. [2024-06-04 15:30:06,744 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 64 transitions, 453 flow [2024-06-04 15:30:06,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:06,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:06,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:06,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-04 15:30:06,744 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)] === [2024-06-04 15:30:06,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:06,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1661997263, now seen corresponding path program 3 times [2024-06-04 15:30:06,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:06,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147659681] [2024-06-04 15:30:06,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:06,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:06,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:07,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:07,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:07,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147659681] [2024-06-04 15:30:07,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147659681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:07,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:07,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:30:07,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873214737] [2024-06-04 15:30:07,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:07,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:30:07,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:07,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:30:07,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:30:07,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:30:07,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 64 transitions, 453 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:07,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:07,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:30:07,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:07,842 INFO L124 PetriNetUnfolderBase]: 183/353 cut-off events. [2024-06-04 15:30:07,842 INFO L125 PetriNetUnfolderBase]: For 2898/2898 co-relation queries the response was YES. [2024-06-04 15:30:07,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1740 conditions, 353 events. 183/353 cut-off events. For 2898/2898 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1425 event pairs, 38 based on Foata normal form. 1/350 useless extension candidates. Maximal degree in co-relation 1704. Up to 240 conditions per place. [2024-06-04 15:30:07,845 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 40 selfloop transitions, 35 changer transitions 0/79 dead transitions. [2024-06-04 15:30:07,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 79 transitions, 721 flow [2024-06-04 15:30:07,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:30:07,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:30:07,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 110 transitions. [2024-06-04 15:30:07,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4296875 [2024-06-04 15:30:07,846 INFO L175 Difference]: Start difference. First operand has 72 places, 64 transitions, 453 flow. Second operand 8 states and 110 transitions. [2024-06-04 15:30:07,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 79 transitions, 721 flow [2024-06-04 15:30:07,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 79 transitions, 678 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-04 15:30:07,850 INFO L231 Difference]: Finished difference. Result has 77 places, 69 transitions, 568 flow [2024-06-04 15:30:07,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=568, PETRI_PLACES=77, PETRI_TRANSITIONS=69} [2024-06-04 15:30:07,851 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 46 predicate places. [2024-06-04 15:30:07,851 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 69 transitions, 568 flow [2024-06-04 15:30:07,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:07,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:07,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:07,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-04 15:30:07,852 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)] === [2024-06-04 15:30:07,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:07,853 INFO L85 PathProgramCache]: Analyzing trace with hash -144488451, now seen corresponding path program 4 times [2024-06-04 15:30:07,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:07,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473504650] [2024-06-04 15:30:07,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:07,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:07,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:08,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:08,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:08,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473504650] [2024-06-04 15:30:08,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473504650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:08,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:08,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:30:08,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965056771] [2024-06-04 15:30:08,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:08,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:30:08,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:08,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:30:08,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:30:08,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:30:08,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 69 transitions, 568 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:08,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:08,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:30:08,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:08,887 INFO L124 PetriNetUnfolderBase]: 179/347 cut-off events. [2024-06-04 15:30:08,887 INFO L125 PetriNetUnfolderBase]: For 3481/3481 co-relation queries the response was YES. [2024-06-04 15:30:08,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1846 conditions, 347 events. 179/347 cut-off events. For 3481/3481 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1413 event pairs, 38 based on Foata normal form. 2/345 useless extension candidates. Maximal degree in co-relation 1807. Up to 273 conditions per place. [2024-06-04 15:30:08,890 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 54 selfloop transitions, 21 changer transitions 0/79 dead transitions. [2024-06-04 15:30:08,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 79 transitions, 774 flow [2024-06-04 15:30:08,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:30:08,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:30:08,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 108 transitions. [2024-06-04 15:30:08,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-04 15:30:08,891 INFO L175 Difference]: Start difference. First operand has 77 places, 69 transitions, 568 flow. Second operand 8 states and 108 transitions. [2024-06-04 15:30:08,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 79 transitions, 774 flow [2024-06-04 15:30:08,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 79 transitions, 718 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-04 15:30:08,896 INFO L231 Difference]: Finished difference. Result has 81 places, 69 transitions, 560 flow [2024-06-04 15:30:08,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=560, PETRI_PLACES=81, PETRI_TRANSITIONS=69} [2024-06-04 15:30:08,896 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 50 predicate places. [2024-06-04 15:30:08,896 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 69 transitions, 560 flow [2024-06-04 15:30:08,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:08,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:08,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:08,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-04 15:30:08,897 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)] === [2024-06-04 15:30:08,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:08,897 INFO L85 PathProgramCache]: Analyzing trace with hash -135906659, now seen corresponding path program 1 times [2024-06-04 15:30:08,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:08,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722580882] [2024-06-04 15:30:08,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:08,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:08,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:09,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:09,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:09,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722580882] [2024-06-04 15:30:09,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722580882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:09,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:09,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:30:09,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950542687] [2024-06-04 15:30:09,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:09,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:30:09,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:09,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:30:09,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:30:10,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:30:10,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 69 transitions, 560 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:10,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:10,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:30:10,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:10,245 INFO L124 PetriNetUnfolderBase]: 176/344 cut-off events. [2024-06-04 15:30:10,246 INFO L125 PetriNetUnfolderBase]: For 3520/3520 co-relation queries the response was YES. [2024-06-04 15:30:10,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1837 conditions, 344 events. 176/344 cut-off events. For 3520/3520 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1397 event pairs, 38 based on Foata normal form. 2/345 useless extension candidates. Maximal degree in co-relation 1796. Up to 294 conditions per place. [2024-06-04 15:30:10,248 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 62 selfloop transitions, 13 changer transitions 0/79 dead transitions. [2024-06-04 15:30:10,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 79 transitions, 734 flow [2024-06-04 15:30:10,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:30:10,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:30:10,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-04 15:30:10,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-04 15:30:10,249 INFO L175 Difference]: Start difference. First operand has 81 places, 69 transitions, 560 flow. Second operand 9 states and 112 transitions. [2024-06-04 15:30:10,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 79 transitions, 734 flow [2024-06-04 15:30:10,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 79 transitions, 654 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-04 15:30:10,254 INFO L231 Difference]: Finished difference. Result has 82 places, 69 transitions, 510 flow [2024-06-04 15:30:10,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=510, PETRI_PLACES=82, PETRI_TRANSITIONS=69} [2024-06-04 15:30:10,254 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 51 predicate places. [2024-06-04 15:30:10,254 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 69 transitions, 510 flow [2024-06-04 15:30:10,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:10,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:10,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:10,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-04 15:30:10,255 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)] === [2024-06-04 15:30:10,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:10,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1357459054, now seen corresponding path program 1 times [2024-06-04 15:30:10,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:10,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125893709] [2024-06-04 15:30:10,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:10,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:10,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:11,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:11,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:11,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125893709] [2024-06-04 15:30:11,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125893709] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:11,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:11,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:30:11,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737021922] [2024-06-04 15:30:11,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:11,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:30:11,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:11,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:30:11,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:30:11,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:30:11,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 69 transitions, 510 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:11,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:11,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:30:11,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:11,365 INFO L124 PetriNetUnfolderBase]: 179/351 cut-off events. [2024-06-04 15:30:11,380 INFO L125 PetriNetUnfolderBase]: For 3541/3541 co-relation queries the response was YES. [2024-06-04 15:30:11,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1825 conditions, 351 events. 179/351 cut-off events. For 3541/3541 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1421 event pairs, 33 based on Foata normal form. 1/351 useless extension candidates. Maximal degree in co-relation 1784. Up to 288 conditions per place. [2024-06-04 15:30:11,383 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 66 selfloop transitions, 14 changer transitions 0/84 dead transitions. [2024-06-04 15:30:11,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 84 transitions, 732 flow [2024-06-04 15:30:11,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:30:11,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:30:11,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 108 transitions. [2024-06-04 15:30:11,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-04 15:30:11,385 INFO L175 Difference]: Start difference. First operand has 82 places, 69 transitions, 510 flow. Second operand 8 states and 108 transitions. [2024-06-04 15:30:11,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 84 transitions, 732 flow [2024-06-04 15:30:11,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 84 transitions, 678 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-04 15:30:11,390 INFO L231 Difference]: Finished difference. Result has 81 places, 71 transitions, 519 flow [2024-06-04 15:30:11,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=73, 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=519, PETRI_PLACES=81, PETRI_TRANSITIONS=71} [2024-06-04 15:30:11,391 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 50 predicate places. [2024-06-04 15:30:11,391 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 71 transitions, 519 flow [2024-06-04 15:30:11,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:11,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:11,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:11,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-04 15:30:11,391 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)] === [2024-06-04 15:30:11,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:11,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1209642064, now seen corresponding path program 2 times [2024-06-04 15:30:11,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:11,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951379615] [2024-06-04 15:30:11,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:11,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:11,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:12,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:12,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:12,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951379615] [2024-06-04 15:30:12,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951379615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:12,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:12,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:30:12,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125272292] [2024-06-04 15:30:12,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:12,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:30:12,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:12,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:30:12,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:30:12,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:30:12,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 71 transitions, 519 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:12,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:12,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:30:12,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:12,722 INFO L124 PetriNetUnfolderBase]: 182/358 cut-off events. [2024-06-04 15:30:12,722 INFO L125 PetriNetUnfolderBase]: For 3971/3971 co-relation queries the response was YES. [2024-06-04 15:30:12,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1871 conditions, 358 events. 182/358 cut-off events. For 3971/3971 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1466 event pairs, 33 based on Foata normal form. 1/358 useless extension candidates. Maximal degree in co-relation 1831. Up to 282 conditions per place. [2024-06-04 15:30:12,725 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 60 selfloop transitions, 20 changer transitions 0/84 dead transitions. [2024-06-04 15:30:12,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 84 transitions, 753 flow [2024-06-04 15:30:12,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:30:12,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:30:12,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 107 transitions. [2024-06-04 15:30:12,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41796875 [2024-06-04 15:30:12,726 INFO L175 Difference]: Start difference. First operand has 81 places, 71 transitions, 519 flow. Second operand 8 states and 107 transitions. [2024-06-04 15:30:12,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 84 transitions, 753 flow [2024-06-04 15:30:12,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 84 transitions, 706 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-04 15:30:12,732 INFO L231 Difference]: Finished difference. Result has 83 places, 73 transitions, 552 flow [2024-06-04 15:30:12,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=552, PETRI_PLACES=83, PETRI_TRANSITIONS=73} [2024-06-04 15:30:12,732 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 52 predicate places. [2024-06-04 15:30:12,732 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 73 transitions, 552 flow [2024-06-04 15:30:12,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:12,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:12,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:12,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-04 15:30:12,733 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)] === [2024-06-04 15:30:12,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:12,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1209634128, now seen corresponding path program 1 times [2024-06-04 15:30:12,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:12,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803520083] [2024-06-04 15:30:12,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:12,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:12,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:13,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:13,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:13,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803520083] [2024-06-04 15:30:13,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803520083] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:13,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:13,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:30:13,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381453842] [2024-06-04 15:30:13,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:13,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:30:13,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:13,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:30:13,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:30:13,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:30:13,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 73 transitions, 552 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:13,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:13,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:30:13,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:13,797 INFO L124 PetriNetUnfolderBase]: 188/368 cut-off events. [2024-06-04 15:30:13,797 INFO L125 PetriNetUnfolderBase]: For 4727/4727 co-relation queries the response was YES. [2024-06-04 15:30:13,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1977 conditions, 368 events. 188/368 cut-off events. For 4727/4727 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1516 event pairs, 32 based on Foata normal form. 2/369 useless extension candidates. Maximal degree in co-relation 1936. Up to 281 conditions per place. [2024-06-04 15:30:13,799 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 60 selfloop transitions, 23 changer transitions 0/87 dead transitions. [2024-06-04 15:30:13,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 87 transitions, 806 flow [2024-06-04 15:30:13,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:30:13,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:30:13,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 109 transitions. [2024-06-04 15:30:13,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42578125 [2024-06-04 15:30:13,801 INFO L175 Difference]: Start difference. First operand has 83 places, 73 transitions, 552 flow. Second operand 8 states and 109 transitions. [2024-06-04 15:30:13,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 87 transitions, 806 flow [2024-06-04 15:30:13,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 87 transitions, 744 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-04 15:30:13,806 INFO L231 Difference]: Finished difference. Result has 85 places, 76 transitions, 595 flow [2024-06-04 15:30:13,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=595, PETRI_PLACES=85, PETRI_TRANSITIONS=76} [2024-06-04 15:30:13,807 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 54 predicate places. [2024-06-04 15:30:13,807 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 76 transitions, 595 flow [2024-06-04 15:30:13,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:13,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:13,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:13,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-04 15:30:13,808 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)] === [2024-06-04 15:30:13,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:13,808 INFO L85 PathProgramCache]: Analyzing trace with hash -25051204, now seen corresponding path program 3 times [2024-06-04 15:30:13,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:13,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512476379] [2024-06-04 15:30:13,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:13,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:13,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:14,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:14,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:14,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512476379] [2024-06-04 15:30:14,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512476379] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:14,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:14,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:30:14,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291130788] [2024-06-04 15:30:14,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:14,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:30:14,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:14,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:30:14,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:30:14,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:30:14,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 76 transitions, 595 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:14,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:14,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:30:14,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:15,030 INFO L124 PetriNetUnfolderBase]: 191/373 cut-off events. [2024-06-04 15:30:15,030 INFO L125 PetriNetUnfolderBase]: For 5144/5144 co-relation queries the response was YES. [2024-06-04 15:30:15,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2080 conditions, 373 events. 191/373 cut-off events. For 5144/5144 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1547 event pairs, 35 based on Foata normal form. 1/370 useless extension candidates. Maximal degree in co-relation 2038. Up to 296 conditions per place. [2024-06-04 15:30:15,033 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 64 selfloop transitions, 20 changer transitions 0/88 dead transitions. [2024-06-04 15:30:15,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 88 transitions, 859 flow [2024-06-04 15:30:15,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:30:15,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:30:15,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 107 transitions. [2024-06-04 15:30:15,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41796875 [2024-06-04 15:30:15,035 INFO L175 Difference]: Start difference. First operand has 85 places, 76 transitions, 595 flow. Second operand 8 states and 107 transitions. [2024-06-04 15:30:15,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 88 transitions, 859 flow [2024-06-04 15:30:15,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 88 transitions, 790 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-04 15:30:15,044 INFO L231 Difference]: Finished difference. Result has 87 places, 78 transitions, 611 flow [2024-06-04 15:30:15,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=611, PETRI_PLACES=87, PETRI_TRANSITIONS=78} [2024-06-04 15:30:15,044 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 56 predicate places. [2024-06-04 15:30:15,045 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 78 transitions, 611 flow [2024-06-04 15:30:15,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:15,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:15,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:15,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-04 15:30:15,045 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)] === [2024-06-04 15:30:15,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:15,045 INFO L85 PathProgramCache]: Analyzing trace with hash 72318670, now seen corresponding path program 4 times [2024-06-04 15:30:15,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:15,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902247789] [2024-06-04 15:30:15,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:15,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:15,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:15,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:15,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:15,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902247789] [2024-06-04 15:30:15,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902247789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:15,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:15,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:30:15,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98917026] [2024-06-04 15:30:15,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:15,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:30:15,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:15,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:30:15,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:30:16,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:30:16,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 78 transitions, 611 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:16,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:16,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:30:16,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:16,258 INFO L124 PetriNetUnfolderBase]: 189/370 cut-off events. [2024-06-04 15:30:16,258 INFO L125 PetriNetUnfolderBase]: For 5336/5336 co-relation queries the response was YES. [2024-06-04 15:30:16,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2050 conditions, 370 events. 189/370 cut-off events. For 5336/5336 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1546 event pairs, 35 based on Foata normal form. 1/367 useless extension candidates. Maximal degree in co-relation 2007. Up to 267 conditions per place. [2024-06-04 15:30:16,261 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 55 selfloop transitions, 30 changer transitions 0/89 dead transitions. [2024-06-04 15:30:16,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 89 transitions, 861 flow [2024-06-04 15:30:16,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:30:16,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:30:16,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 107 transitions. [2024-06-04 15:30:16,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41796875 [2024-06-04 15:30:16,263 INFO L175 Difference]: Start difference. First operand has 87 places, 78 transitions, 611 flow. Second operand 8 states and 107 transitions. [2024-06-04 15:30:16,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 89 transitions, 861 flow [2024-06-04 15:30:16,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 89 transitions, 792 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-04 15:30:16,270 INFO L231 Difference]: Finished difference. Result has 89 places, 80 transitions, 651 flow [2024-06-04 15:30:16,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=651, PETRI_PLACES=89, PETRI_TRANSITIONS=80} [2024-06-04 15:30:16,271 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 58 predicate places. [2024-06-04 15:30:16,271 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 80 transitions, 651 flow [2024-06-04 15:30:16,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:16,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:16,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:16,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-04 15:30:16,272 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)] === [2024-06-04 15:30:16,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:16,273 INFO L85 PathProgramCache]: Analyzing trace with hash -24841458, now seen corresponding path program 2 times [2024-06-04 15:30:16,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:16,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402149770] [2024-06-04 15:30:16,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:16,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:16,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:17,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:17,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:17,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402149770] [2024-06-04 15:30:17,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402149770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:17,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:17,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:30:17,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067831465] [2024-06-04 15:30:17,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:17,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:30:17,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:17,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:30:17,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:30:17,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:30:17,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 80 transitions, 651 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:17,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:17,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:30:17,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:17,287 INFO L124 PetriNetUnfolderBase]: 195/382 cut-off events. [2024-06-04 15:30:17,288 INFO L125 PetriNetUnfolderBase]: For 6161/6161 co-relation queries the response was YES. [2024-06-04 15:30:17,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2160 conditions, 382 events. 195/382 cut-off events. For 6161/6161 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1622 event pairs, 35 based on Foata normal form. 2/380 useless extension candidates. Maximal degree in co-relation 2116. Up to 294 conditions per place. [2024-06-04 15:30:17,290 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 66 selfloop transitions, 23 changer transitions 0/93 dead transitions. [2024-06-04 15:30:17,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 93 transitions, 943 flow [2024-06-04 15:30:17,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:30:17,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:30:17,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 109 transitions. [2024-06-04 15:30:17,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42578125 [2024-06-04 15:30:17,291 INFO L175 Difference]: Start difference. First operand has 89 places, 80 transitions, 651 flow. Second operand 8 states and 109 transitions. [2024-06-04 15:30:17,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 93 transitions, 943 flow [2024-06-04 15:30:17,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 93 transitions, 850 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-04 15:30:17,298 INFO L231 Difference]: Finished difference. Result has 91 places, 83 transitions, 672 flow [2024-06-04 15:30:17,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=672, PETRI_PLACES=91, PETRI_TRANSITIONS=83} [2024-06-04 15:30:17,299 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 60 predicate places. [2024-06-04 15:30:17,299 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 83 transitions, 672 flow [2024-06-04 15:30:17,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:17,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:17,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:17,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-04 15:30:17,300 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)] === [2024-06-04 15:30:17,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:17,300 INFO L85 PathProgramCache]: Analyzing trace with hash 81849806, now seen corresponding path program 3 times [2024-06-04 15:30:17,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:17,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640395287] [2024-06-04 15:30:17,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:17,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:17,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:18,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:18,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:18,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640395287] [2024-06-04 15:30:18,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640395287] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:18,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:18,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:30:18,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064717279] [2024-06-04 15:30:18,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:18,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:30:18,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:18,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:30:18,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:30:18,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:30:18,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 83 transitions, 672 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:18,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:18,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:30:18,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:18,524 INFO L124 PetriNetUnfolderBase]: 198/389 cut-off events. [2024-06-04 15:30:18,525 INFO L125 PetriNetUnfolderBase]: For 6450/6450 co-relation queries the response was YES. [2024-06-04 15:30:18,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2219 conditions, 389 events. 198/389 cut-off events. For 6450/6450 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1644 event pairs, 36 based on Foata normal form. 1/389 useless extension candidates. Maximal degree in co-relation 2174. Up to 329 conditions per place. [2024-06-04 15:30:18,528 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 75 selfloop transitions, 16 changer transitions 0/95 dead transitions. [2024-06-04 15:30:18,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 95 transitions, 908 flow [2024-06-04 15:30:18,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:30:18,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:30:18,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-04 15:30:18,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-04 15:30:18,529 INFO L175 Difference]: Start difference. First operand has 91 places, 83 transitions, 672 flow. Second operand 10 states and 124 transitions. [2024-06-04 15:30:18,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 95 transitions, 908 flow [2024-06-04 15:30:18,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 95 transitions, 818 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-04 15:30:18,538 INFO L231 Difference]: Finished difference. Result has 94 places, 85 transitions, 654 flow [2024-06-04 15:30:18,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=654, PETRI_PLACES=94, PETRI_TRANSITIONS=85} [2024-06-04 15:30:18,538 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 63 predicate places. [2024-06-04 15:30:18,538 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 85 transitions, 654 flow [2024-06-04 15:30:18,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:18,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:18,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:18,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-04 15:30:18,539 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)] === [2024-06-04 15:30:18,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:18,539 INFO L85 PathProgramCache]: Analyzing trace with hash 72326606, now seen corresponding path program 4 times [2024-06-04 15:30:18,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:18,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801030909] [2024-06-04 15:30:18,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:18,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:18,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:19,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:19,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:19,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801030909] [2024-06-04 15:30:19,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801030909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:19,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:19,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:30:19,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891115375] [2024-06-04 15:30:19,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:19,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:30:19,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:19,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:30:19,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:30:19,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:30:19,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 85 transitions, 654 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:19,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:19,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:30:19,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:19,894 INFO L124 PetriNetUnfolderBase]: 196/382 cut-off events. [2024-06-04 15:30:19,894 INFO L125 PetriNetUnfolderBase]: For 6137/6137 co-relation queries the response was YES. [2024-06-04 15:30:19,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2126 conditions, 382 events. 196/382 cut-off events. For 6137/6137 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1599 event pairs, 35 based on Foata normal form. 1/379 useless extension candidates. Maximal degree in co-relation 2081. Up to 262 conditions per place. [2024-06-04 15:30:19,897 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 56 selfloop transitions, 37 changer transitions 0/97 dead transitions. [2024-06-04 15:30:19,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 97 transitions, 920 flow [2024-06-04 15:30:19,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:30:19,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:30:19,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-04 15:30:19,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-04 15:30:19,901 INFO L175 Difference]: Start difference. First operand has 94 places, 85 transitions, 654 flow. Second operand 9 states and 120 transitions. [2024-06-04 15:30:19,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 97 transitions, 920 flow [2024-06-04 15:30:19,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 97 transitions, 866 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-04 15:30:19,908 INFO L231 Difference]: Finished difference. Result has 95 places, 87 transitions, 717 flow [2024-06-04 15:30:19,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=600, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=717, PETRI_PLACES=95, PETRI_TRANSITIONS=87} [2024-06-04 15:30:19,909 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 64 predicate places. [2024-06-04 15:30:19,909 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 87 transitions, 717 flow [2024-06-04 15:30:19,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:19,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:19,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:19,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-04 15:30:19,910 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)] === [2024-06-04 15:30:19,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:19,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1089015044, now seen corresponding path program 1 times [2024-06-04 15:30:19,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:19,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550547522] [2024-06-04 15:30:19,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:19,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:19,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:20,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:20,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:20,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550547522] [2024-06-04 15:30:20,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550547522] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:20,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:20,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:30:20,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105773930] [2024-06-04 15:30:20,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:20,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:30:20,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:20,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:30:20,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:30:20,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:30:20,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 87 transitions, 717 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:20,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:20,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:30:20,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:20,865 INFO L124 PetriNetUnfolderBase]: 200/394 cut-off events. [2024-06-04 15:30:20,865 INFO L125 PetriNetUnfolderBase]: For 6894/6894 co-relation queries the response was YES. [2024-06-04 15:30:20,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2237 conditions, 394 events. 200/394 cut-off events. For 6894/6894 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1674 event pairs, 13 based on Foata normal form. 2/395 useless extension candidates. Maximal degree in co-relation 2191. Up to 305 conditions per place. [2024-06-04 15:30:20,868 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 87 selfloop transitions, 12 changer transitions 0/103 dead transitions. [2024-06-04 15:30:20,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 103 transitions, 965 flow [2024-06-04 15:30:20,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:30:20,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:30:20,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 107 transitions. [2024-06-04 15:30:20,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41796875 [2024-06-04 15:30:20,869 INFO L175 Difference]: Start difference. First operand has 95 places, 87 transitions, 717 flow. Second operand 8 states and 107 transitions. [2024-06-04 15:30:20,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 103 transitions, 965 flow [2024-06-04 15:30:20,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 103 transitions, 864 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-04 15:30:20,876 INFO L231 Difference]: Finished difference. Result has 96 places, 88 transitions, 656 flow [2024-06-04 15:30:20,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=656, PETRI_PLACES=96, PETRI_TRANSITIONS=88} [2024-06-04 15:30:20,877 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 65 predicate places. [2024-06-04 15:30:20,877 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 88 transitions, 656 flow [2024-06-04 15:30:20,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:20,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:20,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:20,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-04 15:30:20,878 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)] === [2024-06-04 15:30:20,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:20,878 INFO L85 PathProgramCache]: Analyzing trace with hash 865641566, now seen corresponding path program 2 times [2024-06-04 15:30:20,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:20,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347192230] [2024-06-04 15:30:20,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:20,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:20,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:21,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:21,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:21,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347192230] [2024-06-04 15:30:21,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347192230] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:21,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:21,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:30:21,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967519772] [2024-06-04 15:30:21,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:21,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:30:21,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:21,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:30:21,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:30:21,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:30:21,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 88 transitions, 656 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:21,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:21,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:30:21,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:21,929 INFO L124 PetriNetUnfolderBase]: 204/402 cut-off events. [2024-06-04 15:30:21,930 INFO L125 PetriNetUnfolderBase]: For 7246/7246 co-relation queries the response was YES. [2024-06-04 15:30:21,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2224 conditions, 402 events. 204/402 cut-off events. For 7246/7246 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1723 event pairs, 30 based on Foata normal form. 2/403 useless extension candidates. Maximal degree in co-relation 2177. Up to 330 conditions per place. [2024-06-04 15:30:21,933 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 86 selfloop transitions, 13 changer transitions 0/103 dead transitions. [2024-06-04 15:30:21,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 103 transitions, 904 flow [2024-06-04 15:30:21,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:30:21,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:30:21,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 108 transitions. [2024-06-04 15:30:21,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-04 15:30:21,936 INFO L175 Difference]: Start difference. First operand has 96 places, 88 transitions, 656 flow. Second operand 8 states and 108 transitions. [2024-06-04 15:30:21,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 103 transitions, 904 flow [2024-06-04 15:30:21,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 103 transitions, 874 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-04 15:30:21,959 INFO L231 Difference]: Finished difference. Result has 98 places, 89 transitions, 670 flow [2024-06-04 15:30:21,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=626, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=670, PETRI_PLACES=98, PETRI_TRANSITIONS=89} [2024-06-04 15:30:21,959 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 67 predicate places. [2024-06-04 15:30:21,960 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 89 transitions, 670 flow [2024-06-04 15:30:21,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:21,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:21,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:21,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-04 15:30:21,960 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)] === [2024-06-04 15:30:21,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:21,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1665659900, now seen corresponding path program 1 times [2024-06-04 15:30:21,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:21,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738448593] [2024-06-04 15:30:21,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:21,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:21,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:22,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:22,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:22,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738448593] [2024-06-04 15:30:22,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738448593] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:22,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:22,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:30:22,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110038416] [2024-06-04 15:30:22,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:22,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:30:22,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:22,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:30:22,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:30:22,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:30:22,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 89 transitions, 670 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:22,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:22,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:30:22,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:23,128 INFO L124 PetriNetUnfolderBase]: 210/412 cut-off events. [2024-06-04 15:30:23,128 INFO L125 PetriNetUnfolderBase]: For 8048/8048 co-relation queries the response was YES. [2024-06-04 15:30:23,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2331 conditions, 412 events. 210/412 cut-off events. For 8048/8048 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1776 event pairs, 29 based on Foata normal form. 2/413 useless extension candidates. Maximal degree in co-relation 2283. Up to 337 conditions per place. [2024-06-04 15:30:23,132 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 86 selfloop transitions, 16 changer transitions 0/106 dead transitions. [2024-06-04 15:30:23,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 106 transitions, 960 flow [2024-06-04 15:30:23,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:30:23,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:30:23,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-04 15:30:23,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-04 15:30:23,133 INFO L175 Difference]: Start difference. First operand has 98 places, 89 transitions, 670 flow. Second operand 9 states and 120 transitions. [2024-06-04 15:30:23,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 106 transitions, 960 flow [2024-06-04 15:30:23,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 106 transitions, 926 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-04 15:30:23,143 INFO L231 Difference]: Finished difference. Result has 101 places, 91 transitions, 719 flow [2024-06-04 15:30:23,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=636, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=719, PETRI_PLACES=101, PETRI_TRANSITIONS=91} [2024-06-04 15:30:23,144 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 70 predicate places. [2024-06-04 15:30:23,144 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 91 transitions, 719 flow [2024-06-04 15:30:23,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:23,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:23,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:23,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-04 15:30:23,145 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)] === [2024-06-04 15:30:23,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:23,145 INFO L85 PathProgramCache]: Analyzing trace with hash 798536606, now seen corresponding path program 3 times [2024-06-04 15:30:23,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:23,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494848514] [2024-06-04 15:30:23,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:23,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:23,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:23,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:23,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:23,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494848514] [2024-06-04 15:30:23,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494848514] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:23,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:23,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:30:23,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549384849] [2024-06-04 15:30:23,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:23,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:30:23,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:23,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:30:23,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:30:23,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:30:23,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 91 transitions, 719 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:23,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:23,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:30:23,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:24,132 INFO L124 PetriNetUnfolderBase]: 214/420 cut-off events. [2024-06-04 15:30:24,132 INFO L125 PetriNetUnfolderBase]: For 8660/8660 co-relation queries the response was YES. [2024-06-04 15:30:24,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2405 conditions, 420 events. 214/420 cut-off events. For 8660/8660 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1809 event pairs, 29 based on Foata normal form. 2/421 useless extension candidates. Maximal degree in co-relation 2356. Up to 349 conditions per place. [2024-06-04 15:30:24,135 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 86 selfloop transitions, 16 changer transitions 0/106 dead transitions. [2024-06-04 15:30:24,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 106 transitions, 1011 flow [2024-06-04 15:30:24,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:30:24,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:30:24,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-06-04 15:30:24,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41015625 [2024-06-04 15:30:24,136 INFO L175 Difference]: Start difference. First operand has 101 places, 91 transitions, 719 flow. Second operand 8 states and 105 transitions. [2024-06-04 15:30:24,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 106 transitions, 1011 flow [2024-06-04 15:30:24,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 106 transitions, 946 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-04 15:30:24,146 INFO L231 Difference]: Finished difference. Result has 103 places, 95 transitions, 760 flow [2024-06-04 15:30:24,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=654, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=760, PETRI_PLACES=103, PETRI_TRANSITIONS=95} [2024-06-04 15:30:24,147 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 72 predicate places. [2024-06-04 15:30:24,147 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 95 transitions, 760 flow [2024-06-04 15:30:24,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:24,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:24,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:24,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-04 15:30:24,147 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)] === [2024-06-04 15:30:24,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:24,147 INFO L85 PathProgramCache]: Analyzing trace with hash 970609790, now seen corresponding path program 2 times [2024-06-04 15:30:24,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:24,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402348110] [2024-06-04 15:30:24,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:24,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:24,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:25,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:25,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:25,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402348110] [2024-06-04 15:30:25,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402348110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:25,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:25,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:30:25,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28012099] [2024-06-04 15:30:25,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:25,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:30:25,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:25,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:30:25,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:30:25,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:30:25,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 95 transitions, 760 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:25,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:25,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:30:25,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:25,921 INFO L124 PetriNetUnfolderBase]: 231/451 cut-off events. [2024-06-04 15:30:25,921 INFO L125 PetriNetUnfolderBase]: For 9499/9499 co-relation queries the response was YES. [2024-06-04 15:30:25,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2593 conditions, 451 events. 231/451 cut-off events. For 9499/9499 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2013 event pairs, 30 based on Foata normal form. 1/449 useless extension candidates. Maximal degree in co-relation 2542. Up to 369 conditions per place. [2024-06-04 15:30:25,926 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 89 selfloop transitions, 25 changer transitions 0/118 dead transitions. [2024-06-04 15:30:25,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 118 transitions, 1225 flow [2024-06-04 15:30:25,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:30:25,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:30:25,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-04 15:30:25,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-04 15:30:25,927 INFO L175 Difference]: Start difference. First operand has 103 places, 95 transitions, 760 flow. Second operand 10 states and 130 transitions. [2024-06-04 15:30:25,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 118 transitions, 1225 flow [2024-06-04 15:30:25,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 118 transitions, 1134 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-04 15:30:25,940 INFO L231 Difference]: Finished difference. Result has 112 places, 107 transitions, 919 flow [2024-06-04 15:30:25,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=697, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=919, PETRI_PLACES=112, PETRI_TRANSITIONS=107} [2024-06-04 15:30:25,941 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 81 predicate places. [2024-06-04 15:30:25,941 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 107 transitions, 919 flow [2024-06-04 15:30:25,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:25,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:25,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:25,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-04 15:30:25,941 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)] === [2024-06-04 15:30:25,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:25,942 INFO L85 PathProgramCache]: Analyzing trace with hash -510544450, now seen corresponding path program 3 times [2024-06-04 15:30:25,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:25,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977442524] [2024-06-04 15:30:25,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:25,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:25,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:26,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:26,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:26,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977442524] [2024-06-04 15:30:26,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977442524] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:26,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:26,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:30:26,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655662574] [2024-06-04 15:30:26,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:26,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:30:26,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:26,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:30:26,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:30:26,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:30:26,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 107 transitions, 919 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:27,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:27,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:30:27,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:27,284 INFO L124 PetriNetUnfolderBase]: 255/497 cut-off events. [2024-06-04 15:30:27,284 INFO L125 PetriNetUnfolderBase]: For 12029/12029 co-relation queries the response was YES. [2024-06-04 15:30:27,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3057 conditions, 497 events. 255/497 cut-off events. For 12029/12029 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2271 event pairs, 28 based on Foata normal form. 1/497 useless extension candidates. Maximal degree in co-relation 3001. Up to 391 conditions per place. [2024-06-04 15:30:27,288 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 98 selfloop transitions, 30 changer transitions 0/132 dead transitions. [2024-06-04 15:30:27,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 132 transitions, 1492 flow [2024-06-04 15:30:27,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:30:27,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:30:27,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-04 15:30:27,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-04 15:30:27,289 INFO L175 Difference]: Start difference. First operand has 112 places, 107 transitions, 919 flow. Second operand 10 states and 136 transitions. [2024-06-04 15:30:27,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 132 transitions, 1492 flow [2024-06-04 15:30:27,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 132 transitions, 1442 flow, removed 22 selfloop flow, removed 2 redundant places. [2024-06-04 15:30:27,305 INFO L231 Difference]: Finished difference. Result has 121 places, 117 transitions, 1125 flow [2024-06-04 15:30:27,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=869, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1125, PETRI_PLACES=121, PETRI_TRANSITIONS=117} [2024-06-04 15:30:27,305 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 90 predicate places. [2024-06-04 15:30:27,305 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 117 transitions, 1125 flow [2024-06-04 15:30:27,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:27,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:27,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:27,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-04 15:30:27,306 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)] === [2024-06-04 15:30:27,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:27,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1704980616, now seen corresponding path program 4 times [2024-06-04 15:30:27,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:27,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132007847] [2024-06-04 15:30:27,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:27,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:27,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:28,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:28,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:28,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132007847] [2024-06-04 15:30:28,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132007847] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:28,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:28,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:30:28,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069110068] [2024-06-04 15:30:28,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:28,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:30:28,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:28,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:30:28,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:30:28,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:30:28,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 117 transitions, 1125 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:28,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:28,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:30:28,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:28,935 INFO L124 PetriNetUnfolderBase]: 253/494 cut-off events. [2024-06-04 15:30:28,935 INFO L125 PetriNetUnfolderBase]: For 12437/12437 co-relation queries the response was YES. [2024-06-04 15:30:28,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3108 conditions, 494 events. 253/494 cut-off events. For 12437/12437 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2259 event pairs, 28 based on Foata normal form. 1/494 useless extension candidates. Maximal degree in co-relation 3049. Up to 406 conditions per place. [2024-06-04 15:30:28,940 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 102 selfloop transitions, 25 changer transitions 0/131 dead transitions. [2024-06-04 15:30:28,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 131 transitions, 1450 flow [2024-06-04 15:30:28,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:30:28,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:30:28,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-04 15:30:28,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-04 15:30:28,941 INFO L175 Difference]: Start difference. First operand has 121 places, 117 transitions, 1125 flow. Second operand 10 states and 131 transitions. [2024-06-04 15:30:28,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 131 transitions, 1450 flow [2024-06-04 15:30:28,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 131 transitions, 1369 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-04 15:30:28,958 INFO L231 Difference]: Finished difference. Result has 125 places, 118 transitions, 1137 flow [2024-06-04 15:30:28,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1048, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1137, PETRI_PLACES=125, PETRI_TRANSITIONS=118} [2024-06-04 15:30:28,958 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 94 predicate places. [2024-06-04 15:30:28,959 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 118 transitions, 1137 flow [2024-06-04 15:30:28,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:28,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:28,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:28,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-04 15:30:28,959 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)] === [2024-06-04 15:30:28,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:28,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1704971688, now seen corresponding path program 1 times [2024-06-04 15:30:28,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:28,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038061576] [2024-06-04 15:30:28,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:28,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:28,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:30,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:30,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:30,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038061576] [2024-06-04 15:30:30,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038061576] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:30,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:30,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:30:30,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332160816] [2024-06-04 15:30:30,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:30,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:30:30,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:30,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:30:30,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:30:30,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:30:30,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 118 transitions, 1137 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:30,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:30,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:30:30,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:30,436 INFO L124 PetriNetUnfolderBase]: 273/538 cut-off events. [2024-06-04 15:30:30,436 INFO L125 PetriNetUnfolderBase]: For 18024/18024 co-relation queries the response was YES. [2024-06-04 15:30:30,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3364 conditions, 538 events. 273/538 cut-off events. For 18024/18024 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2535 event pairs, 32 based on Foata normal form. 12/549 useless extension candidates. Maximal degree in co-relation 3304. Up to 405 conditions per place. [2024-06-04 15:30:30,439 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 106 selfloop transitions, 22 changer transitions 6/138 dead transitions. [2024-06-04 15:30:30,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 138 transitions, 1536 flow [2024-06-04 15:30:30,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:30:30,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:30:30,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-04 15:30:30,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-04 15:30:30,440 INFO L175 Difference]: Start difference. First operand has 125 places, 118 transitions, 1137 flow. Second operand 11 states and 147 transitions. [2024-06-04 15:30:30,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 138 transitions, 1536 flow [2024-06-04 15:30:30,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 138 transitions, 1459 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-04 15:30:30,458 INFO L231 Difference]: Finished difference. Result has 129 places, 117 transitions, 1115 flow [2024-06-04 15:30:30,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1060, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1115, PETRI_PLACES=129, PETRI_TRANSITIONS=117} [2024-06-04 15:30:30,459 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 98 predicate places. [2024-06-04 15:30:30,459 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 117 transitions, 1115 flow [2024-06-04 15:30:30,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:30,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:30,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:30,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-04 15:30:30,460 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)] === [2024-06-04 15:30:30,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:30,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1156039580, now seen corresponding path program 5 times [2024-06-04 15:30:30,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:30,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790463757] [2024-06-04 15:30:30,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:30,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:30,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:31,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:31,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:31,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790463757] [2024-06-04 15:30:31,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790463757] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:31,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:31,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:30:31,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861585246] [2024-06-04 15:30:31,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:31,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:30:31,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:31,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:30:31,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:30:31,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:30:31,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 117 transitions, 1115 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:31,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:31,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:30:31,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:31,853 INFO L124 PetriNetUnfolderBase]: 265/529 cut-off events. [2024-06-04 15:30:31,854 INFO L125 PetriNetUnfolderBase]: For 15265/15265 co-relation queries the response was YES. [2024-06-04 15:30:31,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3318 conditions, 529 events. 265/529 cut-off events. For 15265/15265 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2508 event pairs, 32 based on Foata normal form. 3/531 useless extension candidates. Maximal degree in co-relation 3258. Up to 380 conditions per place. [2024-06-04 15:30:31,856 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 82 selfloop transitions, 46 changer transitions 0/132 dead transitions. [2024-06-04 15:30:31,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 132 transitions, 1563 flow [2024-06-04 15:30:31,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:30:31,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:30:31,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-04 15:30:31,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4236111111111111 [2024-06-04 15:30:31,858 INFO L175 Difference]: Start difference. First operand has 129 places, 117 transitions, 1115 flow. Second operand 9 states and 122 transitions. [2024-06-04 15:30:31,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 132 transitions, 1563 flow [2024-06-04 15:30:31,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 132 transitions, 1437 flow, removed 42 selfloop flow, removed 8 redundant places. [2024-06-04 15:30:31,878 INFO L231 Difference]: Finished difference. Result has 130 places, 121 transitions, 1203 flow [2024-06-04 15:30:31,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=989, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1203, PETRI_PLACES=130, PETRI_TRANSITIONS=121} [2024-06-04 15:30:31,879 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 99 predicate places. [2024-06-04 15:30:31,879 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 121 transitions, 1203 flow [2024-06-04 15:30:31,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:31,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:31,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:31,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-04 15:30:31,879 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)] === [2024-06-04 15:30:31,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:31,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1421103044, now seen corresponding path program 4 times [2024-06-04 15:30:31,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:31,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069305915] [2024-06-04 15:30:31,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:31,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:31,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:32,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:32,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:32,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069305915] [2024-06-04 15:30:32,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069305915] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:32,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:32,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:30:32,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302608433] [2024-06-04 15:30:32,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:32,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:30:32,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:32,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:30:32,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:30:32,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:30:32,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 121 transitions, 1203 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:32,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:32,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:30:32,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:32,785 INFO L124 PetriNetUnfolderBase]: 262/522 cut-off events. [2024-06-04 15:30:32,785 INFO L125 PetriNetUnfolderBase]: For 14241/14241 co-relation queries the response was YES. [2024-06-04 15:30:32,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3251 conditions, 522 events. 262/522 cut-off events. For 14241/14241 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2487 event pairs, 34 based on Foata normal form. 2/520 useless extension candidates. Maximal degree in co-relation 3190. Up to 432 conditions per place. [2024-06-04 15:30:32,788 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 106 selfloop transitions, 21 changer transitions 0/131 dead transitions. [2024-06-04 15:30:32,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 131 transitions, 1512 flow [2024-06-04 15:30:32,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:30:32,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:30:32,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-06-04 15:30:32,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41015625 [2024-06-04 15:30:32,789 INFO L175 Difference]: Start difference. First operand has 130 places, 121 transitions, 1203 flow. Second operand 8 states and 105 transitions. [2024-06-04 15:30:32,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 131 transitions, 1512 flow [2024-06-04 15:30:32,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 131 transitions, 1431 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-04 15:30:32,810 INFO L231 Difference]: Finished difference. Result has 134 places, 123 transitions, 1210 flow [2024-06-04 15:30:32,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1122, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1210, PETRI_PLACES=134, PETRI_TRANSITIONS=123} [2024-06-04 15:30:32,810 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 103 predicate places. [2024-06-04 15:30:32,811 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 123 transitions, 1210 flow [2024-06-04 15:30:32,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:32,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:32,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:32,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-04 15:30:32,811 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)] === [2024-06-04 15:30:32,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:32,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1414431844, now seen corresponding path program 6 times [2024-06-04 15:30:32,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:32,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239513710] [2024-06-04 15:30:32,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:32,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:32,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:33,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:33,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:33,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239513710] [2024-06-04 15:30:33,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239513710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:33,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:33,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:30:33,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097154030] [2024-06-04 15:30:33,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:33,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:30:33,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:33,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:30:33,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:30:33,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:30:33,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 123 transitions, 1210 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:33,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:33,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:30:33,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:34,271 INFO L124 PetriNetUnfolderBase]: 278/552 cut-off events. [2024-06-04 15:30:34,271 INFO L125 PetriNetUnfolderBase]: For 16276/16276 co-relation queries the response was YES. [2024-06-04 15:30:34,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3607 conditions, 552 events. 278/552 cut-off events. For 16276/16276 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2684 event pairs, 34 based on Foata normal form. 2/550 useless extension candidates. Maximal degree in co-relation 3543. Up to 426 conditions per place. [2024-06-04 15:30:34,275 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 101 selfloop transitions, 33 changer transitions 0/138 dead transitions. [2024-06-04 15:30:34,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 138 transitions, 1694 flow [2024-06-04 15:30:34,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:30:34,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:30:34,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-04 15:30:34,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4236111111111111 [2024-06-04 15:30:34,288 INFO L175 Difference]: Start difference. First operand has 134 places, 123 transitions, 1210 flow. Second operand 9 states and 122 transitions. [2024-06-04 15:30:34,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 138 transitions, 1694 flow [2024-06-04 15:30:34,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 138 transitions, 1597 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-04 15:30:34,310 INFO L231 Difference]: Finished difference. Result has 137 places, 128 transitions, 1314 flow [2024-06-04 15:30:34,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1113, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1314, PETRI_PLACES=137, PETRI_TRANSITIONS=128} [2024-06-04 15:30:34,310 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 106 predicate places. [2024-06-04 15:30:34,310 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 128 transitions, 1314 flow [2024-06-04 15:30:34,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:34,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:34,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:34,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-04 15:30:34,311 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)] === [2024-06-04 15:30:34,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:34,311 INFO L85 PathProgramCache]: Analyzing trace with hash -540404704, now seen corresponding path program 7 times [2024-06-04 15:30:34,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:34,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931355991] [2024-06-04 15:30:34,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:34,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:34,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:35,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:35,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:35,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931355991] [2024-06-04 15:30:35,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931355991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:35,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:35,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:30:35,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224310268] [2024-06-04 15:30:35,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:35,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:30:35,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:35,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:30:35,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:30:35,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:30:35,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 128 transitions, 1314 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:35,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:35,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:30:35,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:35,763 INFO L124 PetriNetUnfolderBase]: 289/576 cut-off events. [2024-06-04 15:30:35,763 INFO L125 PetriNetUnfolderBase]: For 18644/18644 co-relation queries the response was YES. [2024-06-04 15:30:35,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3907 conditions, 576 events. 289/576 cut-off events. For 18644/18644 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2837 event pairs, 80 based on Foata normal form. 2/576 useless extension candidates. Maximal degree in co-relation 3842. Up to 484 conditions per place. [2024-06-04 15:30:35,767 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 118 selfloop transitions, 20 changer transitions 0/142 dead transitions. [2024-06-04 15:30:35,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 142 transitions, 1808 flow [2024-06-04 15:30:35,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:30:35,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:30:35,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-04 15:30:35,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097222222222222 [2024-06-04 15:30:35,768 INFO L175 Difference]: Start difference. First operand has 137 places, 128 transitions, 1314 flow. Second operand 9 states and 118 transitions. [2024-06-04 15:30:35,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 142 transitions, 1808 flow [2024-06-04 15:30:35,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 142 transitions, 1714 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-04 15:30:35,793 INFO L231 Difference]: Finished difference. Result has 141 places, 133 transitions, 1405 flow [2024-06-04 15:30:35,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1220, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1405, PETRI_PLACES=141, PETRI_TRANSITIONS=133} [2024-06-04 15:30:35,794 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 110 predicate places. [2024-06-04 15:30:35,794 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 133 transitions, 1405 flow [2024-06-04 15:30:35,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:35,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:35,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:35,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-04 15:30:35,794 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)] === [2024-06-04 15:30:35,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:35,794 INFO L85 PathProgramCache]: Analyzing trace with hash -770330464, now seen corresponding path program 8 times [2024-06-04 15:30:35,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:35,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870077852] [2024-06-04 15:30:35,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:35,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:35,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:36,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:36,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:36,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870077852] [2024-06-04 15:30:36,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870077852] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:36,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:36,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:30:36,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694950488] [2024-06-04 15:30:36,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:36,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:30:36,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:36,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:30:36,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:30:36,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:30:36,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 133 transitions, 1405 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:36,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:36,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:30:36,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:37,127 INFO L124 PetriNetUnfolderBase]: 287/571 cut-off events. [2024-06-04 15:30:37,127 INFO L125 PetriNetUnfolderBase]: For 17785/17785 co-relation queries the response was YES. [2024-06-04 15:30:37,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3835 conditions, 571 events. 287/571 cut-off events. For 17785/17785 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2791 event pairs, 34 based on Foata normal form. 1/569 useless extension candidates. Maximal degree in co-relation 3768. Up to 443 conditions per place. [2024-06-04 15:30:37,131 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 105 selfloop transitions, 35 changer transitions 0/144 dead transitions. [2024-06-04 15:30:37,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 144 transitions, 1825 flow [2024-06-04 15:30:37,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:30:37,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:30:37,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 123 transitions. [2024-06-04 15:30:37,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4270833333333333 [2024-06-04 15:30:37,160 INFO L175 Difference]: Start difference. First operand has 141 places, 133 transitions, 1405 flow. Second operand 9 states and 123 transitions. [2024-06-04 15:30:37,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 144 transitions, 1825 flow [2024-06-04 15:30:37,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 144 transitions, 1727 flow, removed 41 selfloop flow, removed 5 redundant places. [2024-06-04 15:30:37,192 INFO L231 Difference]: Finished difference. Result has 145 places, 135 transitions, 1436 flow [2024-06-04 15:30:37,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1307, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1436, PETRI_PLACES=145, PETRI_TRANSITIONS=135} [2024-06-04 15:30:37,192 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 114 predicate places. [2024-06-04 15:30:37,192 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 135 transitions, 1436 flow [2024-06-04 15:30:37,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:37,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:37,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:37,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-04 15:30:37,193 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)] === [2024-06-04 15:30:37,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:37,193 INFO L85 PathProgramCache]: Analyzing trace with hash -2052850626, now seen corresponding path program 9 times [2024-06-04 15:30:37,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:37,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145458654] [2024-06-04 15:30:37,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:37,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:37,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:38,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:38,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:38,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145458654] [2024-06-04 15:30:38,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145458654] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:38,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:38,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:30:38,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146049175] [2024-06-04 15:30:38,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:38,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:30:38,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:38,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:30:38,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:30:38,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:30:38,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 135 transitions, 1436 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:38,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:38,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:30:38,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:38,523 INFO L124 PetriNetUnfolderBase]: 290/576 cut-off events. [2024-06-04 15:30:38,523 INFO L125 PetriNetUnfolderBase]: For 18012/18012 co-relation queries the response was YES. [2024-06-04 15:30:38,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3876 conditions, 576 events. 290/576 cut-off events. For 18012/18012 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2801 event pairs, 34 based on Foata normal form. 1/573 useless extension candidates. Maximal degree in co-relation 3807. Up to 393 conditions per place. [2024-06-04 15:30:38,527 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 90 selfloop transitions, 56 changer transitions 0/150 dead transitions. [2024-06-04 15:30:38,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 150 transitions, 1946 flow [2024-06-04 15:30:38,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:30:38,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:30:38,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 123 transitions. [2024-06-04 15:30:38,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4270833333333333 [2024-06-04 15:30:38,528 INFO L175 Difference]: Start difference. First operand has 145 places, 135 transitions, 1436 flow. Second operand 9 states and 123 transitions. [2024-06-04 15:30:38,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 150 transitions, 1946 flow [2024-06-04 15:30:38,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 150 transitions, 1838 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-04 15:30:38,558 INFO L231 Difference]: Finished difference. Result has 150 places, 141 transitions, 1622 flow [2024-06-04 15:30:38,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1330, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1622, PETRI_PLACES=150, PETRI_TRANSITIONS=141} [2024-06-04 15:30:38,559 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 119 predicate places. [2024-06-04 15:30:38,559 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 141 transitions, 1622 flow [2024-06-04 15:30:38,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:38,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:38,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:38,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-04 15:30:38,559 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)] === [2024-06-04 15:30:38,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:38,560 INFO L85 PathProgramCache]: Analyzing trace with hash -2053087776, now seen corresponding path program 10 times [2024-06-04 15:30:38,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:38,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021445627] [2024-06-04 15:30:38,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:38,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:38,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:39,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:39,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:39,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021445627] [2024-06-04 15:30:39,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021445627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:39,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:39,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:30:39,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416174996] [2024-06-04 15:30:39,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:39,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:30:39,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:39,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:30:39,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:30:39,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:30:39,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 141 transitions, 1622 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:39,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:39,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:30:39,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:39,961 INFO L124 PetriNetUnfolderBase]: 293/579 cut-off events. [2024-06-04 15:30:39,961 INFO L125 PetriNetUnfolderBase]: For 19035/19035 co-relation queries the response was YES. [2024-06-04 15:30:39,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4069 conditions, 579 events. 293/579 cut-off events. For 19035/19035 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2830 event pairs, 34 based on Foata normal form. 1/576 useless extension candidates. Maximal degree in co-relation 3997. Up to 326 conditions per place. [2024-06-04 15:30:39,965 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 76 selfloop transitions, 76 changer transitions 0/156 dead transitions. [2024-06-04 15:30:39,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 156 transitions, 2298 flow [2024-06-04 15:30:39,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:30:39,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:30:39,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 128 transitions. [2024-06-04 15:30:39,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-04 15:30:39,986 INFO L175 Difference]: Start difference. First operand has 150 places, 141 transitions, 1622 flow. Second operand 9 states and 128 transitions. [2024-06-04 15:30:39,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 156 transitions, 2298 flow [2024-06-04 15:30:40,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 156 transitions, 2168 flow, removed 54 selfloop flow, removed 3 redundant places. [2024-06-04 15:30:40,020 INFO L231 Difference]: Finished difference. Result has 156 places, 145 transitions, 1785 flow [2024-06-04 15:30:40,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1492, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1785, PETRI_PLACES=156, PETRI_TRANSITIONS=145} [2024-06-04 15:30:40,021 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 125 predicate places. [2024-06-04 15:30:40,021 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 145 transitions, 1785 flow [2024-06-04 15:30:40,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:40,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:40,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:40,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-04 15:30:40,022 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)] === [2024-06-04 15:30:40,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:40,023 INFO L85 PathProgramCache]: Analyzing trace with hash -798547652, now seen corresponding path program 2 times [2024-06-04 15:30:40,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:40,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139835798] [2024-06-04 15:30:40,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:40,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:40,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:40,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:40,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:40,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139835798] [2024-06-04 15:30:40,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139835798] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:40,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:40,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:30:40,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492227161] [2024-06-04 15:30:40,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:40,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:30:40,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:40,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:30:40,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:30:40,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:30:40,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 145 transitions, 1785 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:40,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:40,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:30:40,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:41,171 INFO L124 PetriNetUnfolderBase]: 313/625 cut-off events. [2024-06-04 15:30:41,171 INFO L125 PetriNetUnfolderBase]: For 28007/28007 co-relation queries the response was YES. [2024-06-04 15:30:41,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4469 conditions, 625 events. 313/625 cut-off events. For 28007/28007 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3125 event pairs, 35 based on Foata normal form. 12/636 useless extension candidates. Maximal degree in co-relation 4395. Up to 430 conditions per place. [2024-06-04 15:30:41,176 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 121 selfloop transitions, 30 changer transitions 6/161 dead transitions. [2024-06-04 15:30:41,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 161 transitions, 2245 flow [2024-06-04 15:30:41,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:30:41,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:30:41,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2024-06-04 15:30:41,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2024-06-04 15:30:41,177 INFO L175 Difference]: Start difference. First operand has 156 places, 145 transitions, 1785 flow. Second operand 9 states and 124 transitions. [2024-06-04 15:30:41,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 161 transitions, 2245 flow [2024-06-04 15:30:41,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 161 transitions, 2040 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-04 15:30:41,213 INFO L231 Difference]: Finished difference. Result has 157 places, 144 transitions, 1666 flow [2024-06-04 15:30:41,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1592, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1666, PETRI_PLACES=157, PETRI_TRANSITIONS=144} [2024-06-04 15:30:41,214 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 126 predicate places. [2024-06-04 15:30:41,214 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 144 transitions, 1666 flow [2024-06-04 15:30:41,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:41,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:41,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:41,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-04 15:30:41,214 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)] === [2024-06-04 15:30:41,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:41,215 INFO L85 PathProgramCache]: Analyzing trace with hash -2052841698, now seen corresponding path program 3 times [2024-06-04 15:30:41,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:41,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550931959] [2024-06-04 15:30:41,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:41,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:41,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:42,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:42,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:42,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550931959] [2024-06-04 15:30:42,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550931959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:42,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:42,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:30:42,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066725581] [2024-06-04 15:30:42,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:42,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:30:42,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:42,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:30:42,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:30:42,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:30:42,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 144 transitions, 1666 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:42,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:42,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:30:42,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:42,767 INFO L124 PetriNetUnfolderBase]: 305/611 cut-off events. [2024-06-04 15:30:42,768 INFO L125 PetriNetUnfolderBase]: For 21499/21499 co-relation queries the response was YES. [2024-06-04 15:30:42,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4209 conditions, 611 events. 305/611 cut-off events. For 21499/21499 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3064 event pairs, 38 based on Foata normal form. 2/609 useless extension candidates. Maximal degree in co-relation 4136. Up to 461 conditions per place. [2024-06-04 15:30:42,772 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 108 selfloop transitions, 43 changer transitions 0/155 dead transitions. [2024-06-04 15:30:42,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 155 transitions, 2024 flow [2024-06-04 15:30:42,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:30:42,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:30:42,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-04 15:30:42,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-04 15:30:42,801 INFO L175 Difference]: Start difference. First operand has 157 places, 144 transitions, 1666 flow. Second operand 10 states and 131 transitions. [2024-06-04 15:30:42,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 155 transitions, 2024 flow [2024-06-04 15:30:42,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 155 transitions, 1946 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-04 15:30:42,838 INFO L231 Difference]: Finished difference. Result has 160 places, 145 transitions, 1714 flow [2024-06-04 15:30:42,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1590, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1714, PETRI_PLACES=160, PETRI_TRANSITIONS=145} [2024-06-04 15:30:42,840 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 129 predicate places. [2024-06-04 15:30:42,840 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 145 transitions, 1714 flow [2024-06-04 15:30:42,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:42,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:42,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:42,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-04 15:30:42,843 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)] === [2024-06-04 15:30:42,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:42,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1767741828, now seen corresponding path program 4 times [2024-06-04 15:30:42,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:42,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146378369] [2024-06-04 15:30:42,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:42,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:42,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:43,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:43,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:43,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146378369] [2024-06-04 15:30:43,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146378369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:43,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:43,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:30:43,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691342375] [2024-06-04 15:30:43,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:43,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:30:43,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:43,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:30:43,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:30:43,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:30:43,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 145 transitions, 1714 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:43,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:43,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:30:43,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:44,122 INFO L124 PetriNetUnfolderBase]: 312/628 cut-off events. [2024-06-04 15:30:44,122 INFO L125 PetriNetUnfolderBase]: For 21741/21741 co-relation queries the response was YES. [2024-06-04 15:30:44,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4313 conditions, 628 events. 312/628 cut-off events. For 21741/21741 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3207 event pairs, 84 based on Foata normal form. 2/628 useless extension candidates. Maximal degree in co-relation 4239. Up to 545 conditions per place. [2024-06-04 15:30:44,127 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 138 selfloop transitions, 16 changer transitions 0/158 dead transitions. [2024-06-04 15:30:44,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 158 transitions, 2095 flow [2024-06-04 15:30:44,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:30:44,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:30:44,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-04 15:30:44,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-04 15:30:44,128 INFO L175 Difference]: Start difference. First operand has 160 places, 145 transitions, 1714 flow. Second operand 10 states and 124 transitions. [2024-06-04 15:30:44,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 158 transitions, 2095 flow [2024-06-04 15:30:44,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 158 transitions, 1981 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-04 15:30:44,175 INFO L231 Difference]: Finished difference. Result has 163 places, 148 transitions, 1696 flow [2024-06-04 15:30:44,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1600, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1696, PETRI_PLACES=163, PETRI_TRANSITIONS=148} [2024-06-04 15:30:44,176 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 132 predicate places. [2024-06-04 15:30:44,176 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 148 transitions, 1696 flow [2024-06-04 15:30:44,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:44,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:44,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:44,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-04 15:30:44,177 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)] === [2024-06-04 15:30:44,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:44,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1757622498, now seen corresponding path program 5 times [2024-06-04 15:30:44,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:44,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263376199] [2024-06-04 15:30:44,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:44,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:44,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:45,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:45,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:45,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263376199] [2024-06-04 15:30:45,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263376199] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:45,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:45,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:30:45,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234636810] [2024-06-04 15:30:45,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:45,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:30:45,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:45,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:30:45,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:30:45,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:30:45,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 148 transitions, 1696 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:45,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:45,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:30:45,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:45,652 INFO L124 PetriNetUnfolderBase]: 316/636 cut-off events. [2024-06-04 15:30:45,652 INFO L125 PetriNetUnfolderBase]: For 22599/22599 co-relation queries the response was YES. [2024-06-04 15:30:45,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4318 conditions, 636 events. 316/636 cut-off events. For 22599/22599 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3244 event pairs, 84 based on Foata normal form. 2/636 useless extension candidates. Maximal degree in co-relation 4242. Up to 541 conditions per place. [2024-06-04 15:30:45,671 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 135 selfloop transitions, 21 changer transitions 0/160 dead transitions. [2024-06-04 15:30:45,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 160 transitions, 2068 flow [2024-06-04 15:30:45,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:30:45,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:30:45,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-04 15:30:45,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-04 15:30:45,672 INFO L175 Difference]: Start difference. First operand has 163 places, 148 transitions, 1696 flow. Second operand 11 states and 135 transitions. [2024-06-04 15:30:45,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 160 transitions, 2068 flow [2024-06-04 15:30:45,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 160 transitions, 2009 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-04 15:30:45,719 INFO L231 Difference]: Finished difference. Result has 167 places, 149 transitions, 1723 flow [2024-06-04 15:30:45,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1637, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1723, PETRI_PLACES=167, PETRI_TRANSITIONS=149} [2024-06-04 15:30:45,719 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 136 predicate places. [2024-06-04 15:30:45,720 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 149 transitions, 1723 flow [2024-06-04 15:30:45,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:45,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:45,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:45,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-04 15:30:45,721 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)] === [2024-06-04 15:30:45,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:45,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1414422916, now seen corresponding path program 6 times [2024-06-04 15:30:45,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:45,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090080313] [2024-06-04 15:30:45,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:45,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:45,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:46,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:46,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:46,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090080313] [2024-06-04 15:30:46,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090080313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:46,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:46,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:30:46,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930507025] [2024-06-04 15:30:46,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:46,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:30:46,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:46,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:30:46,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:30:46,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:30:46,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 149 transitions, 1723 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:46,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:46,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:30:46,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:46,850 INFO L124 PetriNetUnfolderBase]: 336/682 cut-off events. [2024-06-04 15:30:46,851 INFO L125 PetriNetUnfolderBase]: For 31694/31694 co-relation queries the response was YES. [2024-06-04 15:30:46,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4603 conditions, 682 events. 336/682 cut-off events. For 31694/31694 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3552 event pairs, 44 based on Foata normal form. 12/691 useless extension candidates. Maximal degree in co-relation 4526. Up to 520 conditions per place. [2024-06-04 15:30:46,855 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 127 selfloop transitions, 26 changer transitions 6/163 dead transitions. [2024-06-04 15:30:46,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 163 transitions, 2175 flow [2024-06-04 15:30:46,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:30:46,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:30:46,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2024-06-04 15:30:46,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2024-06-04 15:30:46,857 INFO L175 Difference]: Start difference. First operand has 167 places, 149 transitions, 1723 flow. Second operand 9 states and 124 transitions. [2024-06-04 15:30:46,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 163 transitions, 2175 flow [2024-06-04 15:30:46,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 163 transitions, 2099 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-04 15:30:46,904 INFO L231 Difference]: Finished difference. Result has 167 places, 148 transitions, 1722 flow [2024-06-04 15:30:46,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1649, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1722, PETRI_PLACES=167, PETRI_TRANSITIONS=148} [2024-06-04 15:30:46,907 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 136 predicate places. [2024-06-04 15:30:46,907 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 148 transitions, 1722 flow [2024-06-04 15:30:46,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:46,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:46,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:46,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-04 15:30:46,908 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)] === [2024-06-04 15:30:46,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:46,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1469867160, now seen corresponding path program 7 times [2024-06-04 15:30:46,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:46,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81703664] [2024-06-04 15:30:46,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:46,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:46,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:47,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:47,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:47,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81703664] [2024-06-04 15:30:47,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81703664] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:47,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:47,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:30:47,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165655314] [2024-06-04 15:30:47,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:47,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:30:47,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:47,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:30:47,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:30:47,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:30:47,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 148 transitions, 1722 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:47,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:47,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:30:47,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:48,150 INFO L124 PetriNetUnfolderBase]: 321/659 cut-off events. [2024-06-04 15:30:48,150 INFO L125 PetriNetUnfolderBase]: For 22201/22201 co-relation queries the response was YES. [2024-06-04 15:30:48,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4317 conditions, 659 events. 321/659 cut-off events. For 22201/22201 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3462 event pairs, 87 based on Foata normal form. 2/659 useless extension candidates. Maximal degree in co-relation 4239. Up to 546 conditions per place. [2024-06-04 15:30:48,154 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 134 selfloop transitions, 22 changer transitions 0/160 dead transitions. [2024-06-04 15:30:48,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 160 transitions, 2060 flow [2024-06-04 15:30:48,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:30:48,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:30:48,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-04 15:30:48,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-04 15:30:48,156 INFO L175 Difference]: Start difference. First operand has 167 places, 148 transitions, 1722 flow. Second operand 11 states and 136 transitions. [2024-06-04 15:30:48,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 160 transitions, 2060 flow [2024-06-04 15:30:48,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 160 transitions, 1988 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-04 15:30:48,202 INFO L231 Difference]: Finished difference. Result has 171 places, 148 transitions, 1698 flow [2024-06-04 15:30:48,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1650, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1698, PETRI_PLACES=171, PETRI_TRANSITIONS=148} [2024-06-04 15:30:48,211 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 140 predicate places. [2024-06-04 15:30:48,211 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 148 transitions, 1698 flow [2024-06-04 15:30:48,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:48,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:48,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:48,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-04 15:30:48,212 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)] === [2024-06-04 15:30:48,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:48,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1036543951, now seen corresponding path program 1 times [2024-06-04 15:30:48,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:48,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582641675] [2024-06-04 15:30:48,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:48,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:48,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:49,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:49,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:49,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582641675] [2024-06-04 15:30:49,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582641675] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:49,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:49,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:30:49,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959689945] [2024-06-04 15:30:49,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:49,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:30:49,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:49,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:30:49,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:30:49,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:30:49,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 148 transitions, 1698 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:49,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:49,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:30:49,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:49,473 INFO L124 PetriNetUnfolderBase]: 342/702 cut-off events. [2024-06-04 15:30:49,473 INFO L125 PetriNetUnfolderBase]: For 22593/22593 co-relation queries the response was YES. [2024-06-04 15:30:49,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4437 conditions, 702 events. 342/702 cut-off events. For 22593/22593 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3711 event pairs, 38 based on Foata normal form. 2/703 useless extension candidates. Maximal degree in co-relation 4358. Up to 581 conditions per place. [2024-06-04 15:30:49,477 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 150 selfloop transitions, 19 changer transitions 0/173 dead transitions. [2024-06-04 15:30:49,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 173 transitions, 2132 flow [2024-06-04 15:30:49,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:30:49,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:30:49,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-04 15:30:49,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-04 15:30:49,481 INFO L175 Difference]: Start difference. First operand has 171 places, 148 transitions, 1698 flow. Second operand 10 states and 132 transitions. [2024-06-04 15:30:49,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 173 transitions, 2132 flow [2024-06-04 15:30:49,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 173 transitions, 2039 flow, removed 18 selfloop flow, removed 12 redundant places. [2024-06-04 15:30:49,526 INFO L231 Difference]: Finished difference. Result has 172 places, 156 transitions, 1718 flow [2024-06-04 15:30:49,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1605, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1718, PETRI_PLACES=172, PETRI_TRANSITIONS=156} [2024-06-04 15:30:49,526 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 141 predicate places. [2024-06-04 15:30:49,526 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 156 transitions, 1718 flow [2024-06-04 15:30:49,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:49,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:49,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:49,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-04 15:30:49,527 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)] === [2024-06-04 15:30:49,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:49,527 INFO L85 PathProgramCache]: Analyzing trace with hash -802953907, now seen corresponding path program 2 times [2024-06-04 15:30:49,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:49,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560495237] [2024-06-04 15:30:49,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:49,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:49,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:50,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:50,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:50,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560495237] [2024-06-04 15:30:50,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560495237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:50,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:50,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:30:50,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964535303] [2024-06-04 15:30:50,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:50,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:30:50,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:50,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:30:50,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:30:50,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:30:50,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 156 transitions, 1718 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:50,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:50,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:30:50,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:50,937 INFO L124 PetriNetUnfolderBase]: 352/720 cut-off events. [2024-06-04 15:30:50,937 INFO L125 PetriNetUnfolderBase]: For 23030/23030 co-relation queries the response was YES. [2024-06-04 15:30:50,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4481 conditions, 720 events. 352/720 cut-off events. For 23030/23030 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3826 event pairs, 40 based on Foata normal form. 2/721 useless extension candidates. Maximal degree in co-relation 4401. Up to 613 conditions per place. [2024-06-04 15:30:50,942 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 150 selfloop transitions, 21 changer transitions 0/175 dead transitions. [2024-06-04 15:30:50,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 175 transitions, 2135 flow [2024-06-04 15:30:50,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:30:50,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:30:50,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-04 15:30:50,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-04 15:30:50,943 INFO L175 Difference]: Start difference. First operand has 172 places, 156 transitions, 1718 flow. Second operand 10 states and 131 transitions. [2024-06-04 15:30:50,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 175 transitions, 2135 flow [2024-06-04 15:30:50,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 175 transitions, 2105 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-04 15:30:50,988 INFO L231 Difference]: Finished difference. Result has 181 places, 161 transitions, 1789 flow [2024-06-04 15:30:50,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1688, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1789, PETRI_PLACES=181, PETRI_TRANSITIONS=161} [2024-06-04 15:30:50,988 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 150 predicate places. [2024-06-04 15:30:50,989 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 161 transitions, 1789 flow [2024-06-04 15:30:50,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:50,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:50,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:50,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-04 15:30:50,989 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)] === [2024-06-04 15:30:50,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:50,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1776561237, now seen corresponding path program 3 times [2024-06-04 15:30:50,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:50,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678484034] [2024-06-04 15:30:50,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:50,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:51,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:51,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:51,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:51,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678484034] [2024-06-04 15:30:51,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678484034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:51,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:51,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:30:51,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479224550] [2024-06-04 15:30:51,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:51,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:30:51,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:51,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:30:51,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:30:51,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:30:51,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 161 transitions, 1789 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:51,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:51,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:30:51,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:52,301 INFO L124 PetriNetUnfolderBase]: 360/736 cut-off events. [2024-06-04 15:30:52,302 INFO L125 PetriNetUnfolderBase]: For 24024/24024 co-relation queries the response was YES. [2024-06-04 15:30:52,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4593 conditions, 736 events. 360/736 cut-off events. For 24024/24024 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3983 event pairs, 38 based on Foata normal form. 2/737 useless extension candidates. Maximal degree in co-relation 4510. Up to 624 conditions per place. [2024-06-04 15:30:52,309 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 154 selfloop transitions, 20 changer transitions 0/178 dead transitions. [2024-06-04 15:30:52,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 178 transitions, 2198 flow [2024-06-04 15:30:52,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:30:52,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:30:52,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-04 15:30:52,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-04 15:30:52,310 INFO L175 Difference]: Start difference. First operand has 181 places, 161 transitions, 1789 flow. Second operand 10 states and 131 transitions. [2024-06-04 15:30:52,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 178 transitions, 2198 flow [2024-06-04 15:30:52,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 178 transitions, 2148 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-04 15:30:52,387 INFO L231 Difference]: Finished difference. Result has 186 places, 163 transitions, 1812 flow [2024-06-04 15:30:52,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1739, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1812, PETRI_PLACES=186, PETRI_TRANSITIONS=163} [2024-06-04 15:30:52,388 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 155 predicate places. [2024-06-04 15:30:52,388 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 163 transitions, 1812 flow [2024-06-04 15:30:52,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:52,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:52,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:52,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-04 15:30:52,389 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)] === [2024-06-04 15:30:52,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:52,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1521450155, now seen corresponding path program 4 times [2024-06-04 15:30:52,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:52,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515774683] [2024-06-04 15:30:52,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:52,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:52,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:53,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:53,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:53,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515774683] [2024-06-04 15:30:53,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515774683] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:53,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:53,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:30:53,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18608338] [2024-06-04 15:30:53,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:53,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:30:53,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:53,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:30:53,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:30:53,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:30:53,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 163 transitions, 1812 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:53,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:53,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:30:53,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:53,789 INFO L124 PetriNetUnfolderBase]: 364/744 cut-off events. [2024-06-04 15:30:53,789 INFO L125 PetriNetUnfolderBase]: For 25177/25177 co-relation queries the response was YES. [2024-06-04 15:30:53,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4661 conditions, 744 events. 364/744 cut-off events. For 25177/25177 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4039 event pairs, 54 based on Foata normal form. 2/745 useless extension candidates. Maximal degree in co-relation 4576. Up to 650 conditions per place. [2024-06-04 15:30:53,794 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 157 selfloop transitions, 17 changer transitions 1/179 dead transitions. [2024-06-04 15:30:53,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 179 transitions, 2234 flow [2024-06-04 15:30:53,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:30:53,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:30:53,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-04 15:30:53,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-04 15:30:53,795 INFO L175 Difference]: Start difference. First operand has 186 places, 163 transitions, 1812 flow. Second operand 10 states and 128 transitions. [2024-06-04 15:30:53,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 179 transitions, 2234 flow [2024-06-04 15:30:53,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 179 transitions, 2180 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-04 15:30:53,853 INFO L231 Difference]: Finished difference. Result has 191 places, 165 transitions, 1833 flow [2024-06-04 15:30:53,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1758, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1833, PETRI_PLACES=191, PETRI_TRANSITIONS=165} [2024-06-04 15:30:53,853 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 160 predicate places. [2024-06-04 15:30:53,854 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 165 transitions, 1833 flow [2024-06-04 15:30:53,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:53,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:53,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:53,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-04 15:30:53,854 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)] === [2024-06-04 15:30:53,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:53,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1001854949, now seen corresponding path program 5 times [2024-06-04 15:30:53,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:53,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040909781] [2024-06-04 15:30:53,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:53,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:53,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:55,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:55,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:55,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040909781] [2024-06-04 15:30:55,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040909781] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:55,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:55,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:30:55,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319433115] [2024-06-04 15:30:55,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:55,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:30:55,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:55,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:30:55,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:30:55,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:30:55,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 165 transitions, 1833 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:55,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:55,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:30:55,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:55,374 INFO L124 PetriNetUnfolderBase]: 360/732 cut-off events. [2024-06-04 15:30:55,374 INFO L125 PetriNetUnfolderBase]: For 25527/25527 co-relation queries the response was YES. [2024-06-04 15:30:55,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4573 conditions, 732 events. 360/732 cut-off events. For 25527/25527 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3952 event pairs, 48 based on Foata normal form. 2/733 useless extension candidates. Maximal degree in co-relation 4485. Up to 633 conditions per place. [2024-06-04 15:30:55,379 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 160 selfloop transitions, 17 changer transitions 0/181 dead transitions. [2024-06-04 15:30:55,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 181 transitions, 2248 flow [2024-06-04 15:30:55,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:30:55,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:30:55,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-04 15:30:55,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-04 15:30:55,380 INFO L175 Difference]: Start difference. First operand has 191 places, 165 transitions, 1833 flow. Second operand 10 states and 128 transitions. [2024-06-04 15:30:55,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 181 transitions, 2248 flow [2024-06-04 15:30:55,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 181 transitions, 2188 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-04 15:30:55,435 INFO L231 Difference]: Finished difference. Result has 196 places, 167 transitions, 1844 flow [2024-06-04 15:30:55,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1773, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1844, PETRI_PLACES=196, PETRI_TRANSITIONS=167} [2024-06-04 15:30:55,436 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 165 predicate places. [2024-06-04 15:30:55,436 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 167 transitions, 1844 flow [2024-06-04 15:30:55,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:55,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:55,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:55,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-04 15:30:55,437 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)] === [2024-06-04 15:30:55,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:55,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1322148365, now seen corresponding path program 6 times [2024-06-04 15:30:55,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:55,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785332486] [2024-06-04 15:30:55,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:55,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:55,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:56,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:56,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:56,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785332486] [2024-06-04 15:30:56,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785332486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:56,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:56,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:30:56,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437527606] [2024-06-04 15:30:56,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:56,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:30:56,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:56,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:30:56,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:30:56,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:30:56,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 167 transitions, 1844 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:56,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:56,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:30:56,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:57,142 INFO L124 PetriNetUnfolderBase]: 364/740 cut-off events. [2024-06-04 15:30:57,142 INFO L125 PetriNetUnfolderBase]: For 26433/26433 co-relation queries the response was YES. [2024-06-04 15:30:57,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4619 conditions, 740 events. 364/740 cut-off events. For 26433/26433 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4000 event pairs, 54 based on Foata normal form. 2/741 useless extension candidates. Maximal degree in co-relation 4529. Up to 640 conditions per place. [2024-06-04 15:30:57,148 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 157 selfloop transitions, 20 changer transitions 0/181 dead transitions. [2024-06-04 15:30:57,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 181 transitions, 2256 flow [2024-06-04 15:30:57,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:30:57,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:30:57,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-04 15:30:57,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-04 15:30:57,149 INFO L175 Difference]: Start difference. First operand has 196 places, 167 transitions, 1844 flow. Second operand 10 states and 130 transitions. [2024-06-04 15:30:57,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 181 transitions, 2256 flow [2024-06-04 15:30:57,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 181 transitions, 2204 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-04 15:30:57,211 INFO L231 Difference]: Finished difference. Result has 199 places, 168 transitions, 1864 flow [2024-06-04 15:30:57,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1792, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1864, PETRI_PLACES=199, PETRI_TRANSITIONS=168} [2024-06-04 15:30:57,212 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 168 predicate places. [2024-06-04 15:30:57,212 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 168 transitions, 1864 flow [2024-06-04 15:30:57,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:57,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:57,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:57,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-04 15:30:57,213 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)] === [2024-06-04 15:30:57,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:57,213 INFO L85 PathProgramCache]: Analyzing trace with hash 18619471, now seen corresponding path program 1 times [2024-06-04 15:30:57,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:57,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510085511] [2024-06-04 15:30:57,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:57,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:57,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:58,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:58,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:58,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510085511] [2024-06-04 15:30:58,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510085511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:58,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:58,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:30:58,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687226568] [2024-06-04 15:30:58,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:58,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:30:58,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:58,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:30:58,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:30:58,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:30:58,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 168 transitions, 1864 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:58,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:58,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:30:58,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:58,990 INFO L124 PetriNetUnfolderBase]: 367/745 cut-off events. [2024-06-04 15:30:58,990 INFO L125 PetriNetUnfolderBase]: For 26415/26415 co-relation queries the response was YES. [2024-06-04 15:30:58,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4678 conditions, 745 events. 367/745 cut-off events. For 26415/26415 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4019 event pairs, 54 based on Foata normal form. 1/745 useless extension candidates. Maximal degree in co-relation 4587. Up to 639 conditions per place. [2024-06-04 15:30:58,995 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 153 selfloop transitions, 26 changer transitions 0/183 dead transitions. [2024-06-04 15:30:58,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 183 transitions, 2310 flow [2024-06-04 15:30:58,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:30:58,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:30:58,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-04 15:30:58,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-04 15:30:58,996 INFO L175 Difference]: Start difference. First operand has 199 places, 168 transitions, 1864 flow. Second operand 11 states and 142 transitions. [2024-06-04 15:30:58,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 183 transitions, 2310 flow [2024-06-04 15:30:59,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 183 transitions, 2245 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-04 15:30:59,058 INFO L231 Difference]: Finished difference. Result has 202 places, 170 transitions, 1916 flow [2024-06-04 15:30:59,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1799, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1916, PETRI_PLACES=202, PETRI_TRANSITIONS=170} [2024-06-04 15:30:59,058 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 171 predicate places. [2024-06-04 15:30:59,058 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 170 transitions, 1916 flow [2024-06-04 15:30:59,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:30:59,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:59,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:59,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-04 15:30:59,059 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)] === [2024-06-04 15:30:59,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:59,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1322142413, now seen corresponding path program 2 times [2024-06-04 15:30:59,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:59,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087425955] [2024-06-04 15:30:59,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:59,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:59,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:00,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:00,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:00,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087425955] [2024-06-04 15:31:00,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087425955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:00,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:00,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:31:00,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126716770] [2024-06-04 15:31:00,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:00,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:31:00,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:00,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:31:00,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:31:00,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:31:00,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 170 transitions, 1916 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:00,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:00,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:31:00,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:00,701 INFO L124 PetriNetUnfolderBase]: 365/742 cut-off events. [2024-06-04 15:31:00,702 INFO L125 PetriNetUnfolderBase]: For 25908/25908 co-relation queries the response was YES. [2024-06-04 15:31:00,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4586 conditions, 742 events. 365/742 cut-off events. For 25908/25908 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4025 event pairs, 54 based on Foata normal form. 1/742 useless extension candidates. Maximal degree in co-relation 4494. Up to 627 conditions per place. [2024-06-04 15:31:00,706 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 148 selfloop transitions, 31 changer transitions 0/183 dead transitions. [2024-06-04 15:31:00,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 183 transitions, 2306 flow [2024-06-04 15:31:00,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:31:00,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:31:00,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-04 15:31:00,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-04 15:31:00,718 INFO L175 Difference]: Start difference. First operand has 202 places, 170 transitions, 1916 flow. Second operand 11 states and 145 transitions. [2024-06-04 15:31:00,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 183 transitions, 2306 flow [2024-06-04 15:31:00,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 183 transitions, 2183 flow, removed 37 selfloop flow, removed 9 redundant places. [2024-06-04 15:31:00,783 INFO L231 Difference]: Finished difference. Result has 204 places, 170 transitions, 1860 flow [2024-06-04 15:31:00,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1793, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1860, PETRI_PLACES=204, PETRI_TRANSITIONS=170} [2024-06-04 15:31:00,783 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 173 predicate places. [2024-06-04 15:31:00,784 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 170 transitions, 1860 flow [2024-06-04 15:31:00,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:00,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:00,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:00,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-04 15:31:00,784 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)] === [2024-06-04 15:31:00,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:00,785 INFO L85 PathProgramCache]: Analyzing trace with hash 469135317, now seen corresponding path program 7 times [2024-06-04 15:31:00,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:00,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917796047] [2024-06-04 15:31:00,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:00,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:00,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:01,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:01,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:01,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917796047] [2024-06-04 15:31:01,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917796047] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:01,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:01,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:31:01,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039332703] [2024-06-04 15:31:01,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:01,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:31:01,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:01,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:31:01,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:31:01,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:31:01,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 170 transitions, 1860 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:01,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:01,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:31:01,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:02,154 INFO L124 PetriNetUnfolderBase]: 378/771 cut-off events. [2024-06-04 15:31:02,155 INFO L125 PetriNetUnfolderBase]: For 27800/27800 co-relation queries the response was YES. [2024-06-04 15:31:02,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4674 conditions, 771 events. 378/771 cut-off events. For 27800/27800 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4242 event pairs, 50 based on Foata normal form. 2/772 useless extension candidates. Maximal degree in co-relation 4581. Up to 648 conditions per place. [2024-06-04 15:31:02,161 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 167 selfloop transitions, 20 changer transitions 0/191 dead transitions. [2024-06-04 15:31:02,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 191 transitions, 2320 flow [2024-06-04 15:31:02,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:31:02,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:31:02,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-04 15:31:02,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-04 15:31:02,162 INFO L175 Difference]: Start difference. First operand has 204 places, 170 transitions, 1860 flow. Second operand 10 states and 132 transitions. [2024-06-04 15:31:02,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 191 transitions, 2320 flow [2024-06-04 15:31:02,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 191 transitions, 2234 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-04 15:31:02,238 INFO L231 Difference]: Finished difference. Result has 206 places, 173 transitions, 1868 flow [2024-06-04 15:31:02,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1774, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1868, PETRI_PLACES=206, PETRI_TRANSITIONS=173} [2024-06-04 15:31:02,238 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 175 predicate places. [2024-06-04 15:31:02,238 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 173 transitions, 1868 flow [2024-06-04 15:31:02,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:02,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:02,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:02,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-04 15:31:02,239 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)] === [2024-06-04 15:31:02,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:02,239 INFO L85 PathProgramCache]: Analyzing trace with hash 114760927, now seen corresponding path program 8 times [2024-06-04 15:31:02,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:02,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105046057] [2024-06-04 15:31:02,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:02,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:02,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:03,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:03,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:03,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105046057] [2024-06-04 15:31:03,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105046057] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:03,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:03,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:31:03,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734601193] [2024-06-04 15:31:03,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:03,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:31:03,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:03,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:31:03,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:31:03,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:31:03,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 173 transitions, 1868 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:03,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:03,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:31:03,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:03,510 INFO L124 PetriNetUnfolderBase]: 388/789 cut-off events. [2024-06-04 15:31:03,511 INFO L125 PetriNetUnfolderBase]: For 29121/29121 co-relation queries the response was YES. [2024-06-04 15:31:03,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4803 conditions, 789 events. 388/789 cut-off events. For 29121/29121 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4369 event pairs, 59 based on Foata normal form. 2/790 useless extension candidates. Maximal degree in co-relation 4707. Up to 680 conditions per place. [2024-06-04 15:31:03,516 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 167 selfloop transitions, 22 changer transitions 0/193 dead transitions. [2024-06-04 15:31:03,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 193 transitions, 2343 flow [2024-06-04 15:31:03,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:31:03,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:31:03,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-04 15:31:03,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-04 15:31:03,517 INFO L175 Difference]: Start difference. First operand has 206 places, 173 transitions, 1868 flow. Second operand 10 states and 131 transitions. [2024-06-04 15:31:03,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 193 transitions, 2343 flow [2024-06-04 15:31:03,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 193 transitions, 2271 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-04 15:31:03,587 INFO L231 Difference]: Finished difference. Result has 212 places, 178 transitions, 1919 flow [2024-06-04 15:31:03,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1796, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1919, PETRI_PLACES=212, PETRI_TRANSITIONS=178} [2024-06-04 15:31:03,588 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 181 predicate places. [2024-06-04 15:31:03,588 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 178 transitions, 1919 flow [2024-06-04 15:31:03,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:03,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:03,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:03,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-04 15:31:03,588 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)] === [2024-06-04 15:31:03,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:03,589 INFO L85 PathProgramCache]: Analyzing trace with hash -622152367, now seen corresponding path program 9 times [2024-06-04 15:31:03,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:03,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666971396] [2024-06-04 15:31:03,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:03,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:03,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:04,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:04,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:04,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666971396] [2024-06-04 15:31:04,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666971396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:04,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:04,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:31:04,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366921250] [2024-06-04 15:31:04,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:04,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:31:04,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:04,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:31:04,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:31:04,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:31:04,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 178 transitions, 1919 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:04,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:04,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:31:04,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:04,993 INFO L124 PetriNetUnfolderBase]: 396/805 cut-off events. [2024-06-04 15:31:04,993 INFO L125 PetriNetUnfolderBase]: For 30190/30190 co-relation queries the response was YES. [2024-06-04 15:31:04,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4897 conditions, 805 events. 396/805 cut-off events. For 30190/30190 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4495 event pairs, 60 based on Foata normal form. 2/806 useless extension candidates. Maximal degree in co-relation 4798. Up to 691 conditions per place. [2024-06-04 15:31:05,002 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 171 selfloop transitions, 21 changer transitions 0/196 dead transitions. [2024-06-04 15:31:05,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 196 transitions, 2380 flow [2024-06-04 15:31:05,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:31:05,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:31:05,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-04 15:31:05,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-04 15:31:05,003 INFO L175 Difference]: Start difference. First operand has 212 places, 178 transitions, 1919 flow. Second operand 10 states and 131 transitions. [2024-06-04 15:31:05,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 196 transitions, 2380 flow [2024-06-04 15:31:05,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 196 transitions, 2308 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-04 15:31:05,081 INFO L231 Difference]: Finished difference. Result has 217 places, 180 transitions, 1936 flow [2024-06-04 15:31:05,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1847, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1936, PETRI_PLACES=217, PETRI_TRANSITIONS=180} [2024-06-04 15:31:05,082 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 186 predicate places. [2024-06-04 15:31:05,082 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 180 transitions, 1936 flow [2024-06-04 15:31:05,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:05,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:05,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:05,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-04 15:31:05,083 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)] === [2024-06-04 15:31:05,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:05,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1868861579, now seen corresponding path program 10 times [2024-06-04 15:31:05,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:05,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637676180] [2024-06-04 15:31:05,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:05,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:05,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:05,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:05,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:05,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637676180] [2024-06-04 15:31:05,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637676180] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:05,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:05,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:31:05,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174727906] [2024-06-04 15:31:05,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:05,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:31:05,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:05,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:31:05,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:31:05,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:31:05,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 180 transitions, 1936 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:05,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:05,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:31:05,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:06,198 INFO L124 PetriNetUnfolderBase]: 409/832 cut-off events. [2024-06-04 15:31:06,198 INFO L125 PetriNetUnfolderBase]: For 31310/31310 co-relation queries the response was YES. [2024-06-04 15:31:06,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5022 conditions, 832 events. 409/832 cut-off events. For 31310/31310 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 4674 event pairs, 32 based on Foata normal form. 2/833 useless extension candidates. Maximal degree in co-relation 4921. Up to 674 conditions per place. [2024-06-04 15:31:06,205 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 174 selfloop transitions, 23 changer transitions 0/201 dead transitions. [2024-06-04 15:31:06,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 201 transitions, 2424 flow [2024-06-04 15:31:06,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:31:06,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:31:06,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-04 15:31:06,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-04 15:31:06,206 INFO L175 Difference]: Start difference. First operand has 217 places, 180 transitions, 1936 flow. Second operand 10 states and 130 transitions. [2024-06-04 15:31:06,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 201 transitions, 2424 flow [2024-06-04 15:31:06,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 201 transitions, 2354 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-04 15:31:06,283 INFO L231 Difference]: Finished difference. Result has 221 places, 183 transitions, 1972 flow [2024-06-04 15:31:06,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1866, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1972, PETRI_PLACES=221, PETRI_TRANSITIONS=183} [2024-06-04 15:31:06,283 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 190 predicate places. [2024-06-04 15:31:06,284 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 183 transitions, 1972 flow [2024-06-04 15:31:06,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:06,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:06,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:06,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-04 15:31:06,284 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)] === [2024-06-04 15:31:06,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:06,285 INFO L85 PathProgramCache]: Analyzing trace with hash 92034897, now seen corresponding path program 11 times [2024-06-04 15:31:06,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:06,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35214497] [2024-06-04 15:31:06,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:06,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:06,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:07,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:07,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:07,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35214497] [2024-06-04 15:31:07,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35214497] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:07,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:07,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:31:07,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15678198] [2024-06-04 15:31:07,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:07,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:31:07,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:07,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:31:07,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:31:07,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:31:07,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 183 transitions, 1972 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:07,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:07,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:31:07,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:07,501 INFO L124 PetriNetUnfolderBase]: 413/840 cut-off events. [2024-06-04 15:31:07,501 INFO L125 PetriNetUnfolderBase]: For 32547/32547 co-relation queries the response was YES. [2024-06-04 15:31:07,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5098 conditions, 840 events. 413/840 cut-off events. For 32547/32547 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4729 event pairs, 36 based on Foata normal form. 2/841 useless extension candidates. Maximal degree in co-relation 4995. Up to 634 conditions per place. [2024-06-04 15:31:07,506 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 167 selfloop transitions, 28 changer transitions 0/199 dead transitions. [2024-06-04 15:31:07,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 199 transitions, 2434 flow [2024-06-04 15:31:07,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:31:07,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:31:07,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-04 15:31:07,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097222222222222 [2024-06-04 15:31:07,508 INFO L175 Difference]: Start difference. First operand has 221 places, 183 transitions, 1972 flow. Second operand 9 states and 118 transitions. [2024-06-04 15:31:07,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 199 transitions, 2434 flow [2024-06-04 15:31:07,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 199 transitions, 2337 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-04 15:31:07,579 INFO L231 Difference]: Finished difference. Result has 222 places, 184 transitions, 1979 flow [2024-06-04 15:31:07,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1875, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1979, PETRI_PLACES=222, PETRI_TRANSITIONS=184} [2024-06-04 15:31:07,579 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 191 predicate places. [2024-06-04 15:31:07,579 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 184 transitions, 1979 flow [2024-06-04 15:31:07,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:07,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:07,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:07,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-04 15:31:07,580 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)] === [2024-06-04 15:31:07,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:07,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1151777299, now seen corresponding path program 12 times [2024-06-04 15:31:07,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:07,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581322869] [2024-06-04 15:31:07,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:07,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:07,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:08,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:08,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:08,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581322869] [2024-06-04 15:31:08,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581322869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:08,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:08,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:31:08,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314926592] [2024-06-04 15:31:08,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:08,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:31:08,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:08,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:31:08,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:31:08,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:31:08,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 184 transitions, 1979 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:08,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:08,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:31:08,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:08,786 INFO L124 PetriNetUnfolderBase]: 417/848 cut-off events. [2024-06-04 15:31:08,786 INFO L125 PetriNetUnfolderBase]: For 33788/33788 co-relation queries the response was YES. [2024-06-04 15:31:08,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5155 conditions, 848 events. 417/848 cut-off events. For 33788/33788 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4800 event pairs, 62 based on Foata normal form. 2/849 useless extension candidates. Maximal degree in co-relation 5053. Up to 700 conditions per place. [2024-06-04 15:31:08,792 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 167 selfloop transitions, 28 changer transitions 0/199 dead transitions. [2024-06-04 15:31:08,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 199 transitions, 2441 flow [2024-06-04 15:31:08,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:31:08,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:31:08,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-04 15:31:08,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131944444444444 [2024-06-04 15:31:08,795 INFO L175 Difference]: Start difference. First operand has 222 places, 184 transitions, 1979 flow. Second operand 9 states and 119 transitions. [2024-06-04 15:31:08,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 199 transitions, 2441 flow [2024-06-04 15:31:08,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 199 transitions, 2347 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-04 15:31:08,911 INFO L231 Difference]: Finished difference. Result has 224 places, 185 transitions, 1989 flow [2024-06-04 15:31:08,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1891, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1989, PETRI_PLACES=224, PETRI_TRANSITIONS=185} [2024-06-04 15:31:08,913 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 193 predicate places. [2024-06-04 15:31:08,913 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 185 transitions, 1989 flow [2024-06-04 15:31:08,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:08,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:08,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:08,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-04 15:31:08,914 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)] === [2024-06-04 15:31:08,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:08,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1151781019, now seen corresponding path program 13 times [2024-06-04 15:31:08,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:08,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457761722] [2024-06-04 15:31:08,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:08,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:08,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:09,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:09,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:09,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457761722] [2024-06-04 15:31:09,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457761722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:09,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:09,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:31:09,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438387223] [2024-06-04 15:31:09,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:09,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:31:09,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:09,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:31:09,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:31:10,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:31:10,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 185 transitions, 1989 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:10,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:10,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:31:10,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:10,363 INFO L124 PetriNetUnfolderBase]: 421/856 cut-off events. [2024-06-04 15:31:10,363 INFO L125 PetriNetUnfolderBase]: For 31408/31408 co-relation queries the response was YES. [2024-06-04 15:31:10,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5138 conditions, 856 events. 421/856 cut-off events. For 31408/31408 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 4859 event pairs, 69 based on Foata normal form. 2/857 useless extension candidates. Maximal degree in co-relation 5035. Up to 723 conditions per place. [2024-06-04 15:31:10,370 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 164 selfloop transitions, 31 changer transitions 0/199 dead transitions. [2024-06-04 15:31:10,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 199 transitions, 2445 flow [2024-06-04 15:31:10,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:31:10,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:31:10,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-04 15:31:10,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131944444444444 [2024-06-04 15:31:10,371 INFO L175 Difference]: Start difference. First operand has 224 places, 185 transitions, 1989 flow. Second operand 9 states and 119 transitions. [2024-06-04 15:31:10,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 199 transitions, 2445 flow [2024-06-04 15:31:10,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 199 transitions, 2357 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-04 15:31:10,450 INFO L231 Difference]: Finished difference. Result has 226 places, 186 transitions, 2007 flow [2024-06-04 15:31:10,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1905, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2007, PETRI_PLACES=226, PETRI_TRANSITIONS=186} [2024-06-04 15:31:10,451 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 195 predicate places. [2024-06-04 15:31:10,451 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 186 transitions, 2007 flow [2024-06-04 15:31:10,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:10,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:10,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:10,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-04 15:31:10,452 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)] === [2024-06-04 15:31:10,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:10,452 INFO L85 PathProgramCache]: Analyzing trace with hash 436346523, now seen corresponding path program 14 times [2024-06-04 15:31:10,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:10,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379294652] [2024-06-04 15:31:10,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:10,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:10,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:11,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:11,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:11,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379294652] [2024-06-04 15:31:11,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379294652] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:11,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:11,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:31:11,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575554437] [2024-06-04 15:31:11,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:11,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:31:11,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:11,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:31:11,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:31:11,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:31:11,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 186 transitions, 2007 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:11,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:11,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:31:11,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:11,848 INFO L124 PetriNetUnfolderBase]: 425/864 cut-off events. [2024-06-04 15:31:11,849 INFO L125 PetriNetUnfolderBase]: For 30409/30409 co-relation queries the response was YES. [2024-06-04 15:31:11,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5156 conditions, 864 events. 425/864 cut-off events. For 30409/30409 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4908 event pairs, 77 based on Foata normal form. 2/865 useless extension candidates. Maximal degree in co-relation 5052. Up to 741 conditions per place. [2024-06-04 15:31:11,854 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 166 selfloop transitions, 28 changer transitions 0/198 dead transitions. [2024-06-04 15:31:11,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 198 transitions, 2453 flow [2024-06-04 15:31:11,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:31:11,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:31:11,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-04 15:31:11,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097222222222222 [2024-06-04 15:31:11,855 INFO L175 Difference]: Start difference. First operand has 226 places, 186 transitions, 2007 flow. Second operand 9 states and 118 transitions. [2024-06-04 15:31:11,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 198 transitions, 2453 flow [2024-06-04 15:31:11,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 198 transitions, 2361 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-04 15:31:11,930 INFO L231 Difference]: Finished difference. Result has 228 places, 187 transitions, 2011 flow [2024-06-04 15:31:11,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1919, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2011, PETRI_PLACES=228, PETRI_TRANSITIONS=187} [2024-06-04 15:31:11,931 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 197 predicate places. [2024-06-04 15:31:11,931 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 187 transitions, 2011 flow [2024-06-04 15:31:11,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:11,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:11,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:11,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-04 15:31:11,932 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)] === [2024-06-04 15:31:11,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:11,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1270830001, now seen corresponding path program 15 times [2024-06-04 15:31:11,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:11,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035459485] [2024-06-04 15:31:11,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:11,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:11,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:13,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:13,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:13,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035459485] [2024-06-04 15:31:13,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035459485] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:13,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:13,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:31:13,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757834058] [2024-06-04 15:31:13,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:13,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:31:13,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:13,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:31:13,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:31:13,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:31:13,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 187 transitions, 2011 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:13,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:13,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:31:13,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:13,495 INFO L124 PetriNetUnfolderBase]: 429/872 cut-off events. [2024-06-04 15:31:13,495 INFO L125 PetriNetUnfolderBase]: For 29215/29215 co-relation queries the response was YES. [2024-06-04 15:31:13,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5153 conditions, 872 events. 429/872 cut-off events. For 29215/29215 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 4989 event pairs, 79 based on Foata normal form. 2/873 useless extension candidates. Maximal degree in co-relation 5048. Up to 761 conditions per place. [2024-06-04 15:31:13,502 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 173 selfloop transitions, 22 changer transitions 1/200 dead transitions. [2024-06-04 15:31:13,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 200 transitions, 2473 flow [2024-06-04 15:31:13,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:31:13,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:31:13,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-04 15:31:13,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-04 15:31:13,504 INFO L175 Difference]: Start difference. First operand has 228 places, 187 transitions, 2011 flow. Second operand 9 states and 116 transitions. [2024-06-04 15:31:13,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 200 transitions, 2473 flow [2024-06-04 15:31:13,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 200 transitions, 2389 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-04 15:31:13,583 INFO L231 Difference]: Finished difference. Result has 231 places, 188 transitions, 2017 flow [2024-06-04 15:31:13,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1931, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2017, PETRI_PLACES=231, PETRI_TRANSITIONS=188} [2024-06-04 15:31:13,584 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 200 predicate places. [2024-06-04 15:31:13,584 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 188 transitions, 2017 flow [2024-06-04 15:31:13,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:13,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:13,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:13,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-04 15:31:13,585 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)] === [2024-06-04 15:31:13,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:13,586 INFO L85 PathProgramCache]: Analyzing trace with hash 430836273, now seen corresponding path program 16 times [2024-06-04 15:31:13,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:13,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015773362] [2024-06-04 15:31:13,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:13,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:13,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:14,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:14,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:14,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015773362] [2024-06-04 15:31:14,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015773362] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:14,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:14,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:31:14,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928875793] [2024-06-04 15:31:14,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:14,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:31:14,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:14,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:31:14,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:31:14,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:31:14,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 188 transitions, 2017 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:14,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:14,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:31:14,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:15,053 INFO L124 PetriNetUnfolderBase]: 421/852 cut-off events. [2024-06-04 15:31:15,053 INFO L125 PetriNetUnfolderBase]: For 28561/28561 co-relation queries the response was YES. [2024-06-04 15:31:15,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5017 conditions, 852 events. 421/852 cut-off events. For 28561/28561 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 4824 event pairs, 71 based on Foata normal form. 2/853 useless extension candidates. Maximal degree in co-relation 4910. Up to 731 conditions per place. [2024-06-04 15:31:15,060 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 175 selfloop transitions, 22 changer transitions 0/201 dead transitions. [2024-06-04 15:31:15,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 201 transitions, 2469 flow [2024-06-04 15:31:15,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:31:15,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:31:15,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-04 15:31:15,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-04 15:31:15,062 INFO L175 Difference]: Start difference. First operand has 231 places, 188 transitions, 2017 flow. Second operand 9 states and 116 transitions. [2024-06-04 15:31:15,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 201 transitions, 2469 flow [2024-06-04 15:31:15,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 201 transitions, 2391 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-04 15:31:15,134 INFO L231 Difference]: Finished difference. Result has 234 places, 189 transitions, 2021 flow [2024-06-04 15:31:15,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1941, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2021, PETRI_PLACES=234, PETRI_TRANSITIONS=189} [2024-06-04 15:31:15,134 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 203 predicate places. [2024-06-04 15:31:15,134 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 189 transitions, 2021 flow [2024-06-04 15:31:15,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:15,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:15,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:15,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-04 15:31:15,135 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)] === [2024-06-04 15:31:15,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:15,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1470137743, now seen corresponding path program 3 times [2024-06-04 15:31:15,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:15,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027181679] [2024-06-04 15:31:15,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:15,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:15,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:16,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:16,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:16,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027181679] [2024-06-04 15:31:16,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027181679] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:16,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:16,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:31:16,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854474205] [2024-06-04 15:31:16,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:16,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:31:16,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:16,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:31:16,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:31:16,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:31:16,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 189 transitions, 2021 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:16,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:16,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:31:16,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:17,119 INFO L124 PetriNetUnfolderBase]: 424/857 cut-off events. [2024-06-04 15:31:17,120 INFO L125 PetriNetUnfolderBase]: For 27186/27186 co-relation queries the response was YES. [2024-06-04 15:31:17,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5024 conditions, 857 events. 424/857 cut-off events. For 27186/27186 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 4874 event pairs, 75 based on Foata normal form. 1/857 useless extension candidates. Maximal degree in co-relation 4916. Up to 722 conditions per place. [2024-06-04 15:31:17,126 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 158 selfloop transitions, 40 changer transitions 0/202 dead transitions. [2024-06-04 15:31:17,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 202 transitions, 2499 flow [2024-06-04 15:31:17,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:31:17,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:31:17,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-04 15:31:17,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-04 15:31:17,127 INFO L175 Difference]: Start difference. First operand has 234 places, 189 transitions, 2021 flow. Second operand 10 states and 131 transitions. [2024-06-04 15:31:17,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 202 transitions, 2499 flow [2024-06-04 15:31:17,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 202 transitions, 2431 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-04 15:31:17,198 INFO L231 Difference]: Finished difference. Result has 237 places, 191 transitions, 2101 flow [2024-06-04 15:31:17,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1953, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2101, PETRI_PLACES=237, PETRI_TRANSITIONS=191} [2024-06-04 15:31:17,199 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 206 predicate places. [2024-06-04 15:31:17,199 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 191 transitions, 2101 flow [2024-06-04 15:31:17,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:17,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:17,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:17,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-04 15:31:17,200 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)] === [2024-06-04 15:31:17,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:17,200 INFO L85 PathProgramCache]: Analyzing trace with hash -2075315051, now seen corresponding path program 4 times [2024-06-04 15:31:17,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:17,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102983224] [2024-06-04 15:31:17,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:17,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:17,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:18,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:18,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:18,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102983224] [2024-06-04 15:31:18,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102983224] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:18,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:18,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:31:18,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969112560] [2024-06-04 15:31:18,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:18,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:31:18,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:18,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:31:18,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:31:18,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:31:18,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 191 transitions, 2101 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:18,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:18,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:31:18,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:19,191 INFO L124 PetriNetUnfolderBase]: 422/854 cut-off events. [2024-06-04 15:31:19,191 INFO L125 PetriNetUnfolderBase]: For 25708/25708 co-relation queries the response was YES. [2024-06-04 15:31:19,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4937 conditions, 854 events. 422/854 cut-off events. For 25708/25708 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 4854 event pairs, 75 based on Foata normal form. 1/854 useless extension candidates. Maximal degree in co-relation 4828. Up to 719 conditions per place. [2024-06-04 15:31:19,198 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 158 selfloop transitions, 40 changer transitions 0/202 dead transitions. [2024-06-04 15:31:19,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 202 transitions, 2523 flow [2024-06-04 15:31:19,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:31:19,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:31:19,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-04 15:31:19,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-04 15:31:19,199 INFO L175 Difference]: Start difference. First operand has 237 places, 191 transitions, 2101 flow. Second operand 10 states and 130 transitions. [2024-06-04 15:31:19,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 202 transitions, 2523 flow [2024-06-04 15:31:19,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 202 transitions, 2366 flow, removed 40 selfloop flow, removed 9 redundant places. [2024-06-04 15:31:19,281 INFO L231 Difference]: Finished difference. Result has 238 places, 191 transitions, 2032 flow [2024-06-04 15:31:19,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1944, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2032, PETRI_PLACES=238, PETRI_TRANSITIONS=191} [2024-06-04 15:31:19,281 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 207 predicate places. [2024-06-04 15:31:19,281 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 191 transitions, 2032 flow [2024-06-04 15:31:19,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:19,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:19,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:19,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-04 15:31:19,282 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)] === [2024-06-04 15:31:19,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:19,282 INFO L85 PathProgramCache]: Analyzing trace with hash 778783213, now seen corresponding path program 17 times [2024-06-04 15:31:19,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:19,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317488671] [2024-06-04 15:31:19,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:19,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:19,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:20,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:20,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:20,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317488671] [2024-06-04 15:31:20,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317488671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:20,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:20,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:31:20,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751483756] [2024-06-04 15:31:20,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:20,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:31:20,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:20,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:31:20,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:31:20,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:31:20,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 191 transitions, 2032 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:20,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:20,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:31:20,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:20,723 INFO L124 PetriNetUnfolderBase]: 426/860 cut-off events. [2024-06-04 15:31:20,723 INFO L125 PetriNetUnfolderBase]: For 26675/26675 co-relation queries the response was YES. [2024-06-04 15:31:20,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4933 conditions, 860 events. 426/860 cut-off events. For 26675/26675 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 4916 event pairs, 78 based on Foata normal form. 2/858 useless extension candidates. Maximal degree in co-relation 4824. Up to 718 conditions per place. [2024-06-04 15:31:20,729 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 160 selfloop transitions, 37 changer transitions 0/201 dead transitions. [2024-06-04 15:31:20,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 201 transitions, 2474 flow [2024-06-04 15:31:20,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:31:20,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:31:20,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-04 15:31:20,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097222222222222 [2024-06-04 15:31:20,730 INFO L175 Difference]: Start difference. First operand has 238 places, 191 transitions, 2032 flow. Second operand 9 states and 118 transitions. [2024-06-04 15:31:20,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 201 transitions, 2474 flow [2024-06-04 15:31:20,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 201 transitions, 2365 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-04 15:31:20,804 INFO L231 Difference]: Finished difference. Result has 238 places, 192 transitions, 2031 flow [2024-06-04 15:31:20,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1923, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2031, PETRI_PLACES=238, PETRI_TRANSITIONS=192} [2024-06-04 15:31:20,805 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 207 predicate places. [2024-06-04 15:31:20,805 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 192 transitions, 2031 flow [2024-06-04 15:31:20,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:20,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:20,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:20,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-04 15:31:20,806 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)] === [2024-06-04 15:31:20,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:20,806 INFO L85 PathProgramCache]: Analyzing trace with hash -905071025, now seen corresponding path program 18 times [2024-06-04 15:31:20,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:20,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139765495] [2024-06-04 15:31:20,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:20,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:20,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:21,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:21,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:21,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139765495] [2024-06-04 15:31:21,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139765495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:21,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:21,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:31:21,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962129732] [2024-06-04 15:31:21,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:21,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:31:21,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:21,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:31:21,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:31:21,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:31:21,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 192 transitions, 2031 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:21,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:21,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:31:21,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:22,265 INFO L124 PetriNetUnfolderBase]: 430/868 cut-off events. [2024-06-04 15:31:22,265 INFO L125 PetriNetUnfolderBase]: For 27112/27112 co-relation queries the response was YES. [2024-06-04 15:31:22,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4990 conditions, 868 events. 430/868 cut-off events. For 27112/27112 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 4948 event pairs, 78 based on Foata normal form. 2/867 useless extension candidates. Maximal degree in co-relation 4881. Up to 753 conditions per place. [2024-06-04 15:31:22,270 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 173 selfloop transitions, 25 changer transitions 0/202 dead transitions. [2024-06-04 15:31:22,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 202 transitions, 2477 flow [2024-06-04 15:31:22,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:31:22,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:31:22,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-04 15:31:22,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097222222222222 [2024-06-04 15:31:22,271 INFO L175 Difference]: Start difference. First operand has 238 places, 192 transitions, 2031 flow. Second operand 9 states and 118 transitions. [2024-06-04 15:31:22,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 202 transitions, 2477 flow [2024-06-04 15:31:22,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 202 transitions, 2379 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-04 15:31:22,339 INFO L231 Difference]: Finished difference. Result has 240 places, 193 transitions, 2019 flow [2024-06-04 15:31:22,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1933, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2019, PETRI_PLACES=240, PETRI_TRANSITIONS=193} [2024-06-04 15:31:22,339 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 209 predicate places. [2024-06-04 15:31:22,339 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 193 transitions, 2019 flow [2024-06-04 15:31:22,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:22,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:22,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:22,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-04 15:31:22,340 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)] === [2024-06-04 15:31:22,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:22,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1104372815, now seen corresponding path program 19 times [2024-06-04 15:31:22,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:22,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554850095] [2024-06-04 15:31:22,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:22,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:22,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:23,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:23,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:23,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554850095] [2024-06-04 15:31:23,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554850095] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:23,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:23,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:31:23,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283433558] [2024-06-04 15:31:23,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:23,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:31:23,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:23,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:31:23,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:31:23,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:31:23,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 193 transitions, 2019 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:23,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:23,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:31:23,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:23,674 INFO L124 PetriNetUnfolderBase]: 434/876 cut-off events. [2024-06-04 15:31:23,674 INFO L125 PetriNetUnfolderBase]: For 28040/28040 co-relation queries the response was YES. [2024-06-04 15:31:23,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5019 conditions, 876 events. 434/876 cut-off events. For 28040/28040 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5011 event pairs, 80 based on Foata normal form. 2/875 useless extension candidates. Maximal degree in co-relation 4909. Up to 767 conditions per place. [2024-06-04 15:31:23,682 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 177 selfloop transitions, 22 changer transitions 1/204 dead transitions. [2024-06-04 15:31:23,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 204 transitions, 2482 flow [2024-06-04 15:31:23,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:31:23,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:31:23,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-04 15:31:23,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-04 15:31:23,683 INFO L175 Difference]: Start difference. First operand has 240 places, 193 transitions, 2019 flow. Second operand 9 states and 116 transitions. [2024-06-04 15:31:23,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 204 transitions, 2482 flow [2024-06-04 15:31:23,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 204 transitions, 2404 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-04 15:31:23,769 INFO L231 Difference]: Finished difference. Result has 243 places, 194 transitions, 2029 flow [2024-06-04 15:31:23,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1943, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2029, PETRI_PLACES=243, PETRI_TRANSITIONS=194} [2024-06-04 15:31:23,770 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 212 predicate places. [2024-06-04 15:31:23,770 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 194 transitions, 2029 flow [2024-06-04 15:31:23,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:23,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:23,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:23,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-04 15:31:23,770 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)] === [2024-06-04 15:31:23,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:23,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1104520685, now seen corresponding path program 20 times [2024-06-04 15:31:23,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:23,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600093] [2024-06-04 15:31:23,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:23,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:23,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:24,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:24,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:24,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600093] [2024-06-04 15:31:24,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:24,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:24,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:31:24,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326473665] [2024-06-04 15:31:24,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:24,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:31:24,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:24,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:31:24,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:31:24,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:31:24,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 194 transitions, 2029 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:24,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:24,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:31:24,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:25,214 INFO L124 PetriNetUnfolderBase]: 419/843 cut-off events. [2024-06-04 15:31:25,215 INFO L125 PetriNetUnfolderBase]: For 25214/25214 co-relation queries the response was YES. [2024-06-04 15:31:25,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4689 conditions, 843 events. 419/843 cut-off events. For 25214/25214 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 4793 event pairs, 73 based on Foata normal form. 2/842 useless extension candidates. Maximal degree in co-relation 4577. Up to 729 conditions per place. [2024-06-04 15:31:25,222 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 178 selfloop transitions, 22 changer transitions 0/204 dead transitions. [2024-06-04 15:31:25,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 204 transitions, 2451 flow [2024-06-04 15:31:25,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:31:25,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:31:25,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-04 15:31:25,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-04 15:31:25,223 INFO L175 Difference]: Start difference. First operand has 243 places, 194 transitions, 2029 flow. Second operand 9 states and 116 transitions. [2024-06-04 15:31:25,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 204 transitions, 2451 flow [2024-06-04 15:31:25,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 204 transitions, 2369 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-04 15:31:25,309 INFO L231 Difference]: Finished difference. Result has 246 places, 194 transitions, 1995 flow [2024-06-04 15:31:25,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1947, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1995, PETRI_PLACES=246, PETRI_TRANSITIONS=194} [2024-06-04 15:31:25,310 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 215 predicate places. [2024-06-04 15:31:25,310 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 194 transitions, 1995 flow [2024-06-04 15:31:25,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:25,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:25,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:25,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-04 15:31:25,311 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)] === [2024-06-04 15:31:25,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:25,311 INFO L85 PathProgramCache]: Analyzing trace with hash -905065073, now seen corresponding path program 5 times [2024-06-04 15:31:25,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:25,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295258768] [2024-06-04 15:31:25,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:25,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:25,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:26,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:26,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:26,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295258768] [2024-06-04 15:31:26,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295258768] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:26,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:26,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:31:26,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966262750] [2024-06-04 15:31:26,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:26,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:31:26,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:26,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:31:26,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:31:26,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:31:26,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 194 transitions, 1995 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:26,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:26,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:31:26,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:27,325 INFO L124 PetriNetUnfolderBase]: 422/846 cut-off events. [2024-06-04 15:31:27,326 INFO L125 PetriNetUnfolderBase]: For 24379/24379 co-relation queries the response was YES. [2024-06-04 15:31:27,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4684 conditions, 846 events. 422/846 cut-off events. For 24379/24379 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 4820 event pairs, 64 based on Foata normal form. 1/841 useless extension candidates. Maximal degree in co-relation 4571. Up to 702 conditions per place. [2024-06-04 15:31:27,332 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 161 selfloop transitions, 40 changer transitions 0/205 dead transitions. [2024-06-04 15:31:27,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 205 transitions, 2469 flow [2024-06-04 15:31:27,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:31:27,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:31:27,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-04 15:31:27,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-04 15:31:27,333 INFO L175 Difference]: Start difference. First operand has 246 places, 194 transitions, 1995 flow. Second operand 10 states and 132 transitions. [2024-06-04 15:31:27,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 205 transitions, 2469 flow [2024-06-04 15:31:27,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 205 transitions, 2322 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-04 15:31:27,416 INFO L231 Difference]: Finished difference. Result has 247 places, 196 transitions, 1989 flow [2024-06-04 15:31:27,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1848, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1989, PETRI_PLACES=247, PETRI_TRANSITIONS=196} [2024-06-04 15:31:27,417 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 216 predicate places. [2024-06-04 15:31:27,417 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 196 transitions, 1989 flow [2024-06-04 15:31:27,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:27,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:27,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:27,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-04 15:31:27,418 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)] === [2024-06-04 15:31:27,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:27,418 INFO L85 PathProgramCache]: Analyzing trace with hash -640509687, now seen corresponding path program 6 times [2024-06-04 15:31:27,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:27,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144007434] [2024-06-04 15:31:27,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:27,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:27,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:28,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:28,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:28,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144007434] [2024-06-04 15:31:28,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144007434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:28,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:28,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:31:28,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603255301] [2024-06-04 15:31:28,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:28,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:31:28,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:28,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:31:28,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:31:29,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:31:29,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 196 transitions, 1989 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:29,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:29,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:31:29,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:29,378 INFO L124 PetriNetUnfolderBase]: 420/847 cut-off events. [2024-06-04 15:31:29,378 INFO L125 PetriNetUnfolderBase]: For 23306/23306 co-relation queries the response was YES. [2024-06-04 15:31:29,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4499 conditions, 847 events. 420/847 cut-off events. For 23306/23306 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 4858 event pairs, 124 based on Foata normal form. 1/846 useless extension candidates. Maximal degree in co-relation 4386. Up to 759 conditions per place. [2024-06-04 15:31:29,385 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 184 selfloop transitions, 17 changer transitions 0/205 dead transitions. [2024-06-04 15:31:29,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 205 transitions, 2411 flow [2024-06-04 15:31:29,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:31:29,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:31:29,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-04 15:31:29,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-04 15:31:29,386 INFO L175 Difference]: Start difference. First operand has 247 places, 196 transitions, 1989 flow. Second operand 10 states and 124 transitions. [2024-06-04 15:31:29,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 205 transitions, 2411 flow [2024-06-04 15:31:29,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 205 transitions, 2229 flow, removed 40 selfloop flow, removed 8 redundant places. [2024-06-04 15:31:29,479 INFO L231 Difference]: Finished difference. Result has 249 places, 196 transitions, 1846 flow [2024-06-04 15:31:29,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1807, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1846, PETRI_PLACES=249, PETRI_TRANSITIONS=196} [2024-06-04 15:31:29,480 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 218 predicate places. [2024-06-04 15:31:29,480 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 196 transitions, 1846 flow [2024-06-04 15:31:29,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:29,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:29,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:29,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-04 15:31:29,481 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)] === [2024-06-04 15:31:29,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:29,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1896911823, now seen corresponding path program 7 times [2024-06-04 15:31:29,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:29,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880432924] [2024-06-04 15:31:29,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:29,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:29,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:30,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:30,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:30,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880432924] [2024-06-04 15:31:30,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880432924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:30,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:30,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:31:30,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372447563] [2024-06-04 15:31:30,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:30,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:31:30,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:30,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:31:30,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:31:30,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:31:30,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 196 transitions, 1846 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:30,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:30,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:31:30,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:31,114 INFO L124 PetriNetUnfolderBase]: 418/842 cut-off events. [2024-06-04 15:31:31,115 INFO L125 PetriNetUnfolderBase]: For 21767/21767 co-relation queries the response was YES. [2024-06-04 15:31:31,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4291 conditions, 842 events. 418/842 cut-off events. For 21767/21767 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 4805 event pairs, 75 based on Foata normal form. 1/839 useless extension candidates. Maximal degree in co-relation 4177. Up to 721 conditions per place. [2024-06-04 15:31:31,121 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 170 selfloop transitions, 31 changer transitions 0/205 dead transitions. [2024-06-04 15:31:31,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 205 transitions, 2268 flow [2024-06-04 15:31:31,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:31:31,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:31:31,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-04 15:31:31,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-04 15:31:31,122 INFO L175 Difference]: Start difference. First operand has 249 places, 196 transitions, 1846 flow. Second operand 10 states and 130 transitions. [2024-06-04 15:31:31,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 205 transitions, 2268 flow [2024-06-04 15:31:31,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 205 transitions, 2184 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-04 15:31:31,203 INFO L231 Difference]: Finished difference. Result has 250 places, 196 transitions, 1829 flow [2024-06-04 15:31:31,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1762, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1829, PETRI_PLACES=250, PETRI_TRANSITIONS=196} [2024-06-04 15:31:31,204 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 219 predicate places. [2024-06-04 15:31:31,204 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 196 transitions, 1829 flow [2024-06-04 15:31:31,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:31,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:31,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:31,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-04 15:31:31,204 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)] === [2024-06-04 15:31:31,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:31,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1624244925, now seen corresponding path program 8 times [2024-06-04 15:31:31,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:31,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921054892] [2024-06-04 15:31:31,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:31,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:31,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:32,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:32,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:32,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921054892] [2024-06-04 15:31:32,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921054892] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:32,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:32,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:31:32,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685392176] [2024-06-04 15:31:32,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:32,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:31:32,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:32,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:31:32,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:31:32,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:31:32,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 196 transitions, 1829 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:32,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:32,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:31:32,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:32,875 INFO L124 PetriNetUnfolderBase]: 416/839 cut-off events. [2024-06-04 15:31:32,876 INFO L125 PetriNetUnfolderBase]: For 20639/20639 co-relation queries the response was YES. [2024-06-04 15:31:32,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4206 conditions, 839 events. 416/839 cut-off events. For 20639/20639 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 4805 event pairs, 75 based on Foata normal form. 1/837 useless extension candidates. Maximal degree in co-relation 4091. Up to 646 conditions per place. [2024-06-04 15:31:32,882 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 143 selfloop transitions, 60 changer transitions 0/207 dead transitions. [2024-06-04 15:31:32,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 207 transitions, 2371 flow [2024-06-04 15:31:32,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:31:32,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:31:32,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-04 15:31:32,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-04 15:31:32,883 INFO L175 Difference]: Start difference. First operand has 250 places, 196 transitions, 1829 flow. Second operand 11 states and 146 transitions. [2024-06-04 15:31:32,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 207 transitions, 2371 flow [2024-06-04 15:31:32,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 207 transitions, 2237 flow, removed 24 selfloop flow, removed 10 redundant places. [2024-06-04 15:31:32,958 INFO L231 Difference]: Finished difference. Result has 251 places, 196 transitions, 1820 flow [2024-06-04 15:31:32,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1695, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1820, PETRI_PLACES=251, PETRI_TRANSITIONS=196} [2024-06-04 15:31:32,958 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 220 predicate places. [2024-06-04 15:31:32,958 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 196 transitions, 1820 flow [2024-06-04 15:31:32,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:32,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:32,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:32,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-04 15:31:32,959 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)] === [2024-06-04 15:31:32,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:32,959 INFO L85 PathProgramCache]: Analyzing trace with hash -889860357, now seen corresponding path program 9 times [2024-06-04 15:31:32,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:32,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233910986] [2024-06-04 15:31:32,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:32,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:32,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:34,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:34,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:34,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233910986] [2024-06-04 15:31:34,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233910986] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:34,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:34,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:31:34,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628132432] [2024-06-04 15:31:34,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:34,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:31:34,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:34,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:31:34,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:31:34,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:31:34,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 196 transitions, 1820 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:34,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:34,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:31:34,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:34,883 INFO L124 PetriNetUnfolderBase]: 419/844 cut-off events. [2024-06-04 15:31:34,883 INFO L125 PetriNetUnfolderBase]: For 21327/21327 co-relation queries the response was YES. [2024-06-04 15:31:34,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4284 conditions, 844 events. 419/844 cut-off events. For 21327/21327 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 4831 event pairs, 75 based on Foata normal form. 1/842 useless extension candidates. Maximal degree in co-relation 4168. Up to 660 conditions per place. [2024-06-04 15:31:34,890 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 147 selfloop transitions, 56 changer transitions 0/207 dead transitions. [2024-06-04 15:31:34,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 207 transitions, 2304 flow [2024-06-04 15:31:34,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:31:34,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:31:34,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-04 15:31:34,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-04 15:31:34,891 INFO L175 Difference]: Start difference. First operand has 251 places, 196 transitions, 1820 flow. Second operand 10 states and 133 transitions. [2024-06-04 15:31:34,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 207 transitions, 2304 flow [2024-06-04 15:31:34,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 207 transitions, 2122 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-04 15:31:34,966 INFO L231 Difference]: Finished difference. Result has 250 places, 198 transitions, 1817 flow [2024-06-04 15:31:34,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1648, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1817, PETRI_PLACES=250, PETRI_TRANSITIONS=198} [2024-06-04 15:31:34,967 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 219 predicate places. [2024-06-04 15:31:34,967 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 198 transitions, 1817 flow [2024-06-04 15:31:34,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:34,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:34,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:34,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-04 15:31:34,968 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)] === [2024-06-04 15:31:34,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:34,968 INFO L85 PathProgramCache]: Analyzing trace with hash 170621821, now seen corresponding path program 10 times [2024-06-04 15:31:34,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:34,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752460467] [2024-06-04 15:31:34,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:34,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:34,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:36,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:36,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:36,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752460467] [2024-06-04 15:31:36,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752460467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:36,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:36,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:31:36,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083979603] [2024-06-04 15:31:36,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:36,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:31:36,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:36,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:31:36,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:31:36,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:31:36,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 198 transitions, 1817 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:36,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:36,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:31:36,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:37,085 INFO L124 PetriNetUnfolderBase]: 417/841 cut-off events. [2024-06-04 15:31:37,085 INFO L125 PetriNetUnfolderBase]: For 20193/20193 co-relation queries the response was YES. [2024-06-04 15:31:37,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4139 conditions, 841 events. 417/841 cut-off events. For 20193/20193 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 4820 event pairs, 75 based on Foata normal form. 1/839 useless extension candidates. Maximal degree in co-relation 4023. Up to 657 conditions per place. [2024-06-04 15:31:37,092 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 146 selfloop transitions, 57 changer transitions 0/207 dead transitions. [2024-06-04 15:31:37,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 207 transitions, 2243 flow [2024-06-04 15:31:37,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:31:37,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:31:37,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-04 15:31:37,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-04 15:31:37,093 INFO L175 Difference]: Start difference. First operand has 250 places, 198 transitions, 1817 flow. Second operand 10 states and 132 transitions. [2024-06-04 15:31:37,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 207 transitions, 2243 flow [2024-06-04 15:31:37,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 207 transitions, 2056 flow, removed 39 selfloop flow, removed 8 redundant places. [2024-06-04 15:31:37,168 INFO L231 Difference]: Finished difference. Result has 252 places, 198 transitions, 1749 flow [2024-06-04 15:31:37,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1630, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1749, PETRI_PLACES=252, PETRI_TRANSITIONS=198} [2024-06-04 15:31:37,168 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 221 predicate places. [2024-06-04 15:31:37,168 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 198 transitions, 1749 flow [2024-06-04 15:31:37,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:37,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:37,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:37,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-04 15:31:37,169 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)] === [2024-06-04 15:31:37,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:37,169 INFO L85 PathProgramCache]: Analyzing trace with hash -499459335, now seen corresponding path program 1 times [2024-06-04 15:31:37,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:37,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417782808] [2024-06-04 15:31:37,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:37,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:37,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:38,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:38,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:38,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417782808] [2024-06-04 15:31:38,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417782808] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:38,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:38,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:31:38,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794873946] [2024-06-04 15:31:38,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:38,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:31:38,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:38,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:31:38,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:31:38,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:31:38,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 198 transitions, 1749 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:38,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:38,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:31:38,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:39,194 INFO L124 PetriNetUnfolderBase]: 424/856 cut-off events. [2024-06-04 15:31:39,194 INFO L125 PetriNetUnfolderBase]: For 22375/22375 co-relation queries the response was YES. [2024-06-04 15:31:39,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4154 conditions, 856 events. 424/856 cut-off events. For 22375/22375 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 4907 event pairs, 52 based on Foata normal form. 2/857 useless extension candidates. Maximal degree in co-relation 4037. Up to 744 conditions per place. [2024-06-04 15:31:39,201 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 189 selfloop transitions, 23 changer transitions 0/216 dead transitions. [2024-06-04 15:31:39,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 216 transitions, 2249 flow [2024-06-04 15:31:39,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:31:39,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:31:39,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-04 15:31:39,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-04 15:31:39,202 INFO L175 Difference]: Start difference. First operand has 252 places, 198 transitions, 1749 flow. Second operand 11 states and 142 transitions. [2024-06-04 15:31:39,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 216 transitions, 2249 flow [2024-06-04 15:31:39,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 216 transitions, 2123 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-04 15:31:39,271 INFO L231 Difference]: Finished difference. Result has 255 places, 201 transitions, 1718 flow [2024-06-04 15:31:39,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1623, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1718, PETRI_PLACES=255, PETRI_TRANSITIONS=201} [2024-06-04 15:31:39,271 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 224 predicate places. [2024-06-04 15:31:39,271 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 201 transitions, 1718 flow [2024-06-04 15:31:39,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:39,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:39,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:39,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-04 15:31:39,272 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)] === [2024-06-04 15:31:39,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:39,272 INFO L85 PathProgramCache]: Analyzing trace with hash 688603705, now seen corresponding path program 2 times [2024-06-04 15:31:39,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:39,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347028608] [2024-06-04 15:31:39,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:39,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:39,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:40,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:40,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:40,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347028608] [2024-06-04 15:31:40,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347028608] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:40,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:40,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:31:40,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8350603] [2024-06-04 15:31:40,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:40,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:31:40,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:40,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:31:40,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:31:40,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:31:40,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 201 transitions, 1718 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:40,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:40,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:31:40,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:41,130 INFO L124 PetriNetUnfolderBase]: 428/864 cut-off events. [2024-06-04 15:31:41,130 INFO L125 PetriNetUnfolderBase]: For 23083/23083 co-relation queries the response was YES. [2024-06-04 15:31:41,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4161 conditions, 864 events. 428/864 cut-off events. For 23083/23083 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 4981 event pairs, 52 based on Foata normal form. 2/865 useless extension candidates. Maximal degree in co-relation 4042. Up to 738 conditions per place. [2024-06-04 15:31:41,145 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 190 selfloop transitions, 24 changer transitions 0/218 dead transitions. [2024-06-04 15:31:41,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 218 transitions, 2204 flow [2024-06-04 15:31:41,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:31:41,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:31:41,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-04 15:31:41,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-04 15:31:41,147 INFO L175 Difference]: Start difference. First operand has 255 places, 201 transitions, 1718 flow. Second operand 11 states and 144 transitions. [2024-06-04 15:31:41,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 218 transitions, 2204 flow [2024-06-04 15:31:41,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 218 transitions, 2146 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-04 15:31:41,215 INFO L231 Difference]: Finished difference. Result has 259 places, 202 transitions, 1732 flow [2024-06-04 15:31:41,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1660, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1732, PETRI_PLACES=259, PETRI_TRANSITIONS=202} [2024-06-04 15:31:41,216 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 228 predicate places. [2024-06-04 15:31:41,216 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 202 transitions, 1732 flow [2024-06-04 15:31:41,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:41,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:41,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:41,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-04 15:31:41,217 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)] === [2024-06-04 15:31:41,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:41,217 INFO L85 PathProgramCache]: Analyzing trace with hash -737811697, now seen corresponding path program 3 times [2024-06-04 15:31:41,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:41,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487264301] [2024-06-04 15:31:41,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:41,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:41,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:42,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:42,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:42,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487264301] [2024-06-04 15:31:42,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487264301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:42,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:42,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:31:42,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973352595] [2024-06-04 15:31:42,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:42,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:31:42,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:42,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:31:42,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:31:42,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:31:42,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 202 transitions, 1732 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:42,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:42,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:31:42,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:42,589 INFO L124 PetriNetUnfolderBase]: 432/872 cut-off events. [2024-06-04 15:31:42,589 INFO L125 PetriNetUnfolderBase]: For 24020/24020 co-relation queries the response was YES. [2024-06-04 15:31:42,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4234 conditions, 872 events. 432/872 cut-off events. For 24020/24020 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5012 event pairs, 54 based on Foata normal form. 2/873 useless extension candidates. Maximal degree in co-relation 4113. Up to 750 conditions per place. [2024-06-04 15:31:42,596 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 195 selfloop transitions, 21 changer transitions 0/220 dead transitions. [2024-06-04 15:31:42,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 220 transitions, 2226 flow [2024-06-04 15:31:42,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:31:42,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:31:42,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-04 15:31:42,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-04 15:31:42,598 INFO L175 Difference]: Start difference. First operand has 259 places, 202 transitions, 1732 flow. Second operand 11 states and 142 transitions. [2024-06-04 15:31:42,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 220 transitions, 2226 flow [2024-06-04 15:31:42,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 220 transitions, 2164 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-04 15:31:42,683 INFO L231 Difference]: Finished difference. Result has 261 places, 203 transitions, 1738 flow [2024-06-04 15:31:42,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1670, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1738, PETRI_PLACES=261, PETRI_TRANSITIONS=203} [2024-06-04 15:31:42,683 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 230 predicate places. [2024-06-04 15:31:42,683 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 203 transitions, 1738 flow [2024-06-04 15:31:42,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:42,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:42,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:42,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-04 15:31:42,684 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)] === [2024-06-04 15:31:42,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:42,684 INFO L85 PathProgramCache]: Analyzing trace with hash -2061518825, now seen corresponding path program 4 times [2024-06-04 15:31:42,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:42,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751862200] [2024-06-04 15:31:42,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:42,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:42,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:43,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:43,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:43,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751862200] [2024-06-04 15:31:43,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751862200] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:43,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:43,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:31:43,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696520529] [2024-06-04 15:31:43,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:43,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:31:43,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:43,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:31:43,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:31:43,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:31:43,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 203 transitions, 1738 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:43,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:43,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:31:43,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:44,051 INFO L124 PetriNetUnfolderBase]: 436/880 cut-off events. [2024-06-04 15:31:44,051 INFO L125 PetriNetUnfolderBase]: For 24925/24925 co-relation queries the response was YES. [2024-06-04 15:31:44,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4279 conditions, 880 events. 436/880 cut-off events. For 24925/24925 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5086 event pairs, 52 based on Foata normal form. 2/881 useless extension candidates. Maximal degree in co-relation 4157. Up to 749 conditions per place. [2024-06-04 15:31:44,058 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 199 selfloop transitions, 20 changer transitions 0/223 dead transitions. [2024-06-04 15:31:44,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 223 transitions, 2246 flow [2024-06-04 15:31:44,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:31:44,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:31:44,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-04 15:31:44,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-04 15:31:44,059 INFO L175 Difference]: Start difference. First operand has 261 places, 203 transitions, 1738 flow. Second operand 11 states and 143 transitions. [2024-06-04 15:31:44,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 223 transitions, 2246 flow [2024-06-04 15:31:44,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 223 transitions, 2188 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-04 15:31:44,167 INFO L231 Difference]: Finished difference. Result has 263 places, 204 transitions, 1748 flow [2024-06-04 15:31:44,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1680, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1748, PETRI_PLACES=263, PETRI_TRANSITIONS=204} [2024-06-04 15:31:44,167 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 232 predicate places. [2024-06-04 15:31:44,167 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 204 transitions, 1748 flow [2024-06-04 15:31:44,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:44,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:44,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:44,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-04 15:31:44,168 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)] === [2024-06-04 15:31:44,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:44,168 INFO L85 PathProgramCache]: Analyzing trace with hash 688788279, now seen corresponding path program 1 times [2024-06-04 15:31:44,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:44,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834195149] [2024-06-04 15:31:44,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:44,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:44,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:45,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:45,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:45,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834195149] [2024-06-04 15:31:45,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834195149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:45,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:45,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:31:45,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184965125] [2024-06-04 15:31:45,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:45,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:31:45,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:45,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:31:45,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:31:45,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:31:45,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 204 transitions, 1748 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:45,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:45,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:31:45,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:45,836 INFO L124 PetriNetUnfolderBase]: 451/913 cut-off events. [2024-06-04 15:31:45,836 INFO L125 PetriNetUnfolderBase]: For 37649/37649 co-relation queries the response was YES. [2024-06-04 15:31:45,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4448 conditions, 913 events. 451/913 cut-off events. For 37649/37649 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 5312 event pairs, 80 based on Foata normal form. 8/920 useless extension candidates. Maximal degree in co-relation 4325. Up to 783 conditions per place. [2024-06-04 15:31:45,845 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 194 selfloop transitions, 18 changer transitions 9/225 dead transitions. [2024-06-04 15:31:45,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 225 transitions, 2300 flow [2024-06-04 15:31:45,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:31:45,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:31:45,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-04 15:31:45,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-04 15:31:45,846 INFO L175 Difference]: Start difference. First operand has 263 places, 204 transitions, 1748 flow. Second operand 12 states and 153 transitions. [2024-06-04 15:31:45,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 225 transitions, 2300 flow [2024-06-04 15:31:45,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 225 transitions, 2242 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-04 15:31:45,944 INFO L231 Difference]: Finished difference. Result has 267 places, 203 transitions, 1727 flow [2024-06-04 15:31:45,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1690, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1727, PETRI_PLACES=267, PETRI_TRANSITIONS=203} [2024-06-04 15:31:45,944 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 236 predicate places. [2024-06-04 15:31:45,945 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 203 transitions, 1727 flow [2024-06-04 15:31:45,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:45,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:45,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:45,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-04 15:31:45,945 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)] === [2024-06-04 15:31:45,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:45,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1963252025, now seen corresponding path program 5 times [2024-06-04 15:31:45,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:45,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929507552] [2024-06-04 15:31:45,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:45,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:45,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:47,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:47,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:47,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929507552] [2024-06-04 15:31:47,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929507552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:47,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:47,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:31:47,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97193560] [2024-06-04 15:31:47,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:47,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:31:47,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:47,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:31:47,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:31:47,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:31:47,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 203 transitions, 1727 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:47,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:47,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:31:47,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:47,441 INFO L124 PetriNetUnfolderBase]: 438/886 cut-off events. [2024-06-04 15:31:47,441 INFO L125 PetriNetUnfolderBase]: For 26324/26324 co-relation queries the response was YES. [2024-06-04 15:31:47,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4290 conditions, 886 events. 438/886 cut-off events. For 26324/26324 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5143 event pairs, 78 based on Foata normal form. 2/887 useless extension candidates. Maximal degree in co-relation 4165. Up to 775 conditions per place. [2024-06-04 15:31:47,449 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 189 selfloop transitions, 25 changer transitions 0/218 dead transitions. [2024-06-04 15:31:47,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 218 transitions, 2213 flow [2024-06-04 15:31:47,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:31:47,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:31:47,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-04 15:31:47,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-04 15:31:47,450 INFO L175 Difference]: Start difference. First operand has 267 places, 203 transitions, 1727 flow. Second operand 11 states and 143 transitions. [2024-06-04 15:31:47,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 218 transitions, 2213 flow [2024-06-04 15:31:47,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 218 transitions, 2171 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 15:31:47,589 INFO L231 Difference]: Finished difference. Result has 265 places, 204 transitions, 1765 flow [2024-06-04 15:31:47,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1685, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1765, PETRI_PLACES=265, PETRI_TRANSITIONS=204} [2024-06-04 15:31:47,591 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 234 predicate places. [2024-06-04 15:31:47,591 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 204 transitions, 1765 flow [2024-06-04 15:31:47,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:47,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:47,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:47,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-04 15:31:47,592 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)] === [2024-06-04 15:31:47,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:47,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1963074395, now seen corresponding path program 6 times [2024-06-04 15:31:47,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:47,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682603462] [2024-06-04 15:31:47,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:47,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:47,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:48,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:48,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:48,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682603462] [2024-06-04 15:31:48,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682603462] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:48,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:48,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:31:48,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434152945] [2024-06-04 15:31:48,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:48,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:31:48,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:48,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:31:48,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:31:49,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:31:49,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 204 transitions, 1765 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:49,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:49,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:31:49,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:49,466 INFO L124 PetriNetUnfolderBase]: 449/907 cut-off events. [2024-06-04 15:31:49,466 INFO L125 PetriNetUnfolderBase]: For 31021/31021 co-relation queries the response was YES. [2024-06-04 15:31:49,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4600 conditions, 907 events. 449/907 cut-off events. For 31021/31021 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5285 event pairs, 79 based on Foata normal form. 2/908 useless extension candidates. Maximal degree in co-relation 4476. Up to 773 conditions per place. [2024-06-04 15:31:49,476 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 191 selfloop transitions, 27 changer transitions 0/222 dead transitions. [2024-06-04 15:31:49,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 222 transitions, 2419 flow [2024-06-04 15:31:49,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:31:49,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:31:49,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-04 15:31:49,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-04 15:31:49,478 INFO L175 Difference]: Start difference. First operand has 265 places, 204 transitions, 1765 flow. Second operand 11 states and 145 transitions. [2024-06-04 15:31:49,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 222 transitions, 2419 flow [2024-06-04 15:31:49,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 222 transitions, 2349 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-04 15:31:49,605 INFO L231 Difference]: Finished difference. Result has 267 places, 206 transitions, 1807 flow [2024-06-04 15:31:49,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1695, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1807, PETRI_PLACES=267, PETRI_TRANSITIONS=206} [2024-06-04 15:31:49,606 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 236 predicate places. [2024-06-04 15:31:49,606 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 206 transitions, 1807 flow [2024-06-04 15:31:49,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:49,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:49,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:49,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-04 15:31:49,607 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)] === [2024-06-04 15:31:49,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:49,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1969508135, now seen corresponding path program 7 times [2024-06-04 15:31:49,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:49,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941430450] [2024-06-04 15:31:49,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:49,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:49,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:50,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:50,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:50,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941430450] [2024-06-04 15:31:50,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941430450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:50,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:50,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:31:50,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87584209] [2024-06-04 15:31:50,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:50,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:31:50,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:50,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:31:50,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:31:51,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:31:51,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 206 transitions, 1807 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:51,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:51,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:31:51,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:51,443 INFO L124 PetriNetUnfolderBase]: 458/930 cut-off events. [2024-06-04 15:31:51,444 INFO L125 PetriNetUnfolderBase]: For 44556/44556 co-relation queries the response was YES. [2024-06-04 15:31:51,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4589 conditions, 930 events. 458/930 cut-off events. For 44556/44556 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5439 event pairs, 84 based on Foata normal form. 10/939 useless extension candidates. Maximal degree in co-relation 4464. Up to 775 conditions per place. [2024-06-04 15:31:51,451 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 185 selfloop transitions, 28 changer transitions 6/223 dead transitions. [2024-06-04 15:31:51,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 223 transitions, 2337 flow [2024-06-04 15:31:51,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:31:51,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:31:51,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-04 15:31:51,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-04 15:31:51,452 INFO L175 Difference]: Start difference. First operand has 267 places, 206 transitions, 1807 flow. Second operand 11 states and 147 transitions. [2024-06-04 15:31:51,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 223 transitions, 2337 flow [2024-06-04 15:31:51,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 223 transitions, 2259 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-04 15:31:51,578 INFO L231 Difference]: Finished difference. Result has 271 places, 203 transitions, 1764 flow [2024-06-04 15:31:51,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1729, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1764, PETRI_PLACES=271, PETRI_TRANSITIONS=203} [2024-06-04 15:31:51,579 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 240 predicate places. [2024-06-04 15:31:51,579 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 203 transitions, 1764 flow [2024-06-04 15:31:51,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:51,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:51,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:51,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-04 15:31:51,580 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)] === [2024-06-04 15:31:51,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:51,581 INFO L85 PathProgramCache]: Analyzing trace with hash -988147627, now seen corresponding path program 8 times [2024-06-04 15:31:51,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:51,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248477718] [2024-06-04 15:31:51,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:51,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:51,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:52,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:52,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:52,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248477718] [2024-06-04 15:31:52,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248477718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:52,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:52,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:31:52,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936371837] [2024-06-04 15:31:52,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:52,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:31:52,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:52,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:31:52,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:31:52,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:31:52,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 203 transitions, 1764 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:52,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:52,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:31:52,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:53,109 INFO L124 PetriNetUnfolderBase]: 445/901 cut-off events. [2024-06-04 15:31:53,110 INFO L125 PetriNetUnfolderBase]: For 28085/28085 co-relation queries the response was YES. [2024-06-04 15:31:53,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4423 conditions, 901 events. 445/901 cut-off events. For 28085/28085 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 5244 event pairs, 80 based on Foata normal form. 2/902 useless extension candidates. Maximal degree in co-relation 4296. Up to 799 conditions per place. [2024-06-04 15:31:53,117 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 197 selfloop transitions, 18 changer transitions 0/219 dead transitions. [2024-06-04 15:31:53,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 219 transitions, 2258 flow [2024-06-04 15:31:53,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:31:53,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:31:53,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-04 15:31:53,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-04 15:31:53,119 INFO L175 Difference]: Start difference. First operand has 271 places, 203 transitions, 1764 flow. Second operand 11 states and 138 transitions. [2024-06-04 15:31:53,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 219 transitions, 2258 flow [2024-06-04 15:31:53,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 219 transitions, 2187 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-04 15:31:53,242 INFO L231 Difference]: Finished difference. Result has 270 places, 204 transitions, 1763 flow [2024-06-04 15:31:53,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1693, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1763, PETRI_PLACES=270, PETRI_TRANSITIONS=204} [2024-06-04 15:31:53,243 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 239 predicate places. [2024-06-04 15:31:53,243 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 204 transitions, 1763 flow [2024-06-04 15:31:53,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:53,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:53,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:53,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-04 15:31:53,243 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)] === [2024-06-04 15:31:53,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:53,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1393363463, now seen corresponding path program 9 times [2024-06-04 15:31:53,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:53,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340463007] [2024-06-04 15:31:53,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:53,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:53,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:54,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:54,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:54,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340463007] [2024-06-04 15:31:54,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340463007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:54,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:54,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:31:54,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898957770] [2024-06-04 15:31:54,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:54,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:31:54,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:54,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:31:54,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:31:54,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:31:54,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 204 transitions, 1763 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:54,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:54,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:31:54,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:54,768 INFO L124 PetriNetUnfolderBase]: 457/929 cut-off events. [2024-06-04 15:31:54,768 INFO L125 PetriNetUnfolderBase]: For 41072/41072 co-relation queries the response was YES. [2024-06-04 15:31:54,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4555 conditions, 929 events. 457/929 cut-off events. For 41072/41072 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5403 event pairs, 82 based on Foata normal form. 8/936 useless extension candidates. Maximal degree in co-relation 4428. Up to 798 conditions per place. [2024-06-04 15:31:54,775 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 193 selfloop transitions, 14 changer transitions 12/223 dead transitions. [2024-06-04 15:31:54,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 223 transitions, 2289 flow [2024-06-04 15:31:54,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:31:54,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:31:54,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-04 15:31:54,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-04 15:31:54,776 INFO L175 Difference]: Start difference. First operand has 270 places, 204 transitions, 1763 flow. Second operand 11 states and 141 transitions. [2024-06-04 15:31:54,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 223 transitions, 2289 flow [2024-06-04 15:31:54,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 223 transitions, 2229 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-04 15:31:54,883 INFO L231 Difference]: Finished difference. Result has 272 places, 201 transitions, 1707 flow [2024-06-04 15:31:54,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1703, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1707, PETRI_PLACES=272, PETRI_TRANSITIONS=201} [2024-06-04 15:31:54,884 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 241 predicate places. [2024-06-04 15:31:54,884 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 201 transitions, 1707 flow [2024-06-04 15:31:54,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:54,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:54,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:54,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-04 15:31:54,884 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)] === [2024-06-04 15:31:54,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:54,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1562627103, now seen corresponding path program 2 times [2024-06-04 15:31:54,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:54,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814842696] [2024-06-04 15:31:54,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:54,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:54,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:56,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:56,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:56,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814842696] [2024-06-04 15:31:56,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814842696] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:56,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:56,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:31:56,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943388886] [2024-06-04 15:31:56,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:56,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:31:56,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:56,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:31:56,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:31:56,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:31:56,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 201 transitions, 1707 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:56,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:56,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:31:56,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:56,948 INFO L124 PetriNetUnfolderBase]: 447/911 cut-off events. [2024-06-04 15:31:56,956 INFO L125 PetriNetUnfolderBase]: For 43317/43317 co-relation queries the response was YES. [2024-06-04 15:31:56,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4452 conditions, 911 events. 447/911 cut-off events. For 43317/43317 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5326 event pairs, 86 based on Foata normal form. 8/918 useless extension candidates. Maximal degree in co-relation 4324. Up to 763 conditions per place. [2024-06-04 15:31:56,973 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 182 selfloop transitions, 20 changer transitions 13/219 dead transitions. [2024-06-04 15:31:56,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 219 transitions, 2231 flow [2024-06-04 15:31:56,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:31:56,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:31:56,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 156 transitions. [2024-06-04 15:31:56,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-04 15:31:56,975 INFO L175 Difference]: Start difference. First operand has 272 places, 201 transitions, 1707 flow. Second operand 12 states and 156 transitions. [2024-06-04 15:31:56,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 219 transitions, 2231 flow [2024-06-04 15:31:57,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 219 transitions, 2197 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-04 15:31:57,091 INFO L231 Difference]: Finished difference. Result has 269 places, 195 transitions, 1667 flow [2024-06-04 15:31:57,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1673, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1667, PETRI_PLACES=269, PETRI_TRANSITIONS=195} [2024-06-04 15:31:57,092 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 238 predicate places. [2024-06-04 15:31:57,092 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 195 transitions, 1667 flow [2024-06-04 15:31:57,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:57,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:57,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:57,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-04 15:31:57,092 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)] === [2024-06-04 15:31:57,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:57,093 INFO L85 PathProgramCache]: Analyzing trace with hash -2103807177, now seen corresponding path program 3 times [2024-06-04 15:31:57,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:57,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992012971] [2024-06-04 15:31:57,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:57,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:57,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:58,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:58,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:58,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992012971] [2024-06-04 15:31:58,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992012971] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:58,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:58,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:31:58,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557815270] [2024-06-04 15:31:58,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:58,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:31:58,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:58,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:31:58,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:31:58,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:31:58,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 195 transitions, 1667 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:58,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:58,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:31:58,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:59,129 INFO L124 PetriNetUnfolderBase]: 435/895 cut-off events. [2024-06-04 15:31:59,130 INFO L125 PetriNetUnfolderBase]: For 43345/43345 co-relation queries the response was YES. [2024-06-04 15:31:59,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4366 conditions, 895 events. 435/895 cut-off events. For 43345/43345 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5211 event pairs, 88 based on Foata normal form. 8/902 useless extension candidates. Maximal degree in co-relation 4240. Up to 756 conditions per place. [2024-06-04 15:31:59,137 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 181 selfloop transitions, 19 changer transitions 9/213 dead transitions. [2024-06-04 15:31:59,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 213 transitions, 2179 flow [2024-06-04 15:31:59,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:31:59,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:31:59,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-04 15:31:59,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-04 15:31:59,139 INFO L175 Difference]: Start difference. First operand has 269 places, 195 transitions, 1667 flow. Second operand 12 states and 153 transitions. [2024-06-04 15:31:59,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 213 transitions, 2179 flow [2024-06-04 15:31:59,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 213 transitions, 2127 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-04 15:31:59,254 INFO L231 Difference]: Finished difference. Result has 264 places, 192 transitions, 1626 flow [2024-06-04 15:31:59,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1615, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1626, PETRI_PLACES=264, PETRI_TRANSITIONS=192} [2024-06-04 15:31:59,255 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 233 predicate places. [2024-06-04 15:31:59,255 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 192 transitions, 1626 flow [2024-06-04 15:31:59,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:59,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:59,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:59,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-04 15:31:59,255 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)] === [2024-06-04 15:31:59,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:59,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1799099133, now seen corresponding path program 4 times [2024-06-04 15:31:59,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:59,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584008070] [2024-06-04 15:31:59,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:59,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:59,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:00,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:00,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:00,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584008070] [2024-06-04 15:32:00,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584008070] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:00,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:00,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:32:00,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712075213] [2024-06-04 15:32:00,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:00,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:32:00,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:00,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:32:00,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:32:00,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:32:00,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 192 transitions, 1626 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:00,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:00,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:32:00,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:00,818 INFO L124 PetriNetUnfolderBase]: 441/913 cut-off events. [2024-06-04 15:32:00,819 INFO L125 PetriNetUnfolderBase]: For 48125/48125 co-relation queries the response was YES. [2024-06-04 15:32:00,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4750 conditions, 913 events. 441/913 cut-off events. For 48125/48125 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5297 event pairs, 97 based on Foata normal form. 6/918 useless extension candidates. Maximal degree in co-relation 4626. Up to 733 conditions per place. [2024-06-04 15:32:00,827 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 184 selfloop transitions, 17 changer transitions 7/212 dead transitions. [2024-06-04 15:32:00,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 212 transitions, 2272 flow [2024-06-04 15:32:00,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:32:00,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:32:00,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-04 15:32:00,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-04 15:32:00,828 INFO L175 Difference]: Start difference. First operand has 264 places, 192 transitions, 1626 flow. Second operand 11 states and 147 transitions. [2024-06-04 15:32:00,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 212 transitions, 2272 flow [2024-06-04 15:32:00,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 212 transitions, 2226 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-04 15:32:00,981 INFO L231 Difference]: Finished difference. Result has 262 places, 189 transitions, 1590 flow [2024-06-04 15:32:00,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1582, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1590, PETRI_PLACES=262, PETRI_TRANSITIONS=189} [2024-06-04 15:32:00,981 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 231 predicate places. [2024-06-04 15:32:00,981 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 189 transitions, 1590 flow [2024-06-04 15:32:00,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:00,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:00,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:00,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-04 15:32:00,982 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)] === [2024-06-04 15:32:00,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:00,982 INFO L85 PathProgramCache]: Analyzing trace with hash 398135095, now seen corresponding path program 10 times [2024-06-04 15:32:00,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:00,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669256943] [2024-06-04 15:32:00,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:00,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:00,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:01,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:01,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:01,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669256943] [2024-06-04 15:32:01,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669256943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:01,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:01,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:32:01,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386187425] [2024-06-04 15:32:01,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:01,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:32:01,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:01,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:32:01,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:32:02,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:32:02,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 189 transitions, 1590 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:02,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:02,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:32:02,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:02,392 INFO L124 PetriNetUnfolderBase]: 430/884 cut-off events. [2024-06-04 15:32:02,392 INFO L125 PetriNetUnfolderBase]: For 40479/40479 co-relation queries the response was YES. [2024-06-04 15:32:02,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4636 conditions, 884 events. 430/884 cut-off events. For 40479/40479 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5085 event pairs, 84 based on Foata normal form. 2/885 useless extension candidates. Maximal degree in co-relation 4512. Up to 755 conditions per place. [2024-06-04 15:32:02,399 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 185 selfloop transitions, 21 changer transitions 0/210 dead transitions. [2024-06-04 15:32:02,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 210 transitions, 2080 flow [2024-06-04 15:32:02,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:32:02,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:32:02,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-04 15:32:02,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-04 15:32:02,400 INFO L175 Difference]: Start difference. First operand has 262 places, 189 transitions, 1590 flow. Second operand 11 states and 143 transitions. [2024-06-04 15:32:02,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 210 transitions, 2080 flow [2024-06-04 15:32:02,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 210 transitions, 2043 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-04 15:32:02,536 INFO L231 Difference]: Finished difference. Result has 260 places, 190 transitions, 1629 flow [2024-06-04 15:32:02,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1553, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1629, PETRI_PLACES=260, PETRI_TRANSITIONS=190} [2024-06-04 15:32:02,537 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 229 predicate places. [2024-06-04 15:32:02,537 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 190 transitions, 1629 flow [2024-06-04 15:32:02,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:02,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:02,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:02,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-04 15:32:02,537 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)] === [2024-06-04 15:32:02,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:02,538 INFO L85 PathProgramCache]: Analyzing trace with hash -2121153123, now seen corresponding path program 11 times [2024-06-04 15:32:02,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:02,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328489389] [2024-06-04 15:32:02,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:02,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:02,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:03,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:03,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:03,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328489389] [2024-06-04 15:32:03,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328489389] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:03,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:03,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:32:03,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701995786] [2024-06-04 15:32:03,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:03,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:32:03,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:03,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:32:03,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:32:03,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:32:03,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 190 transitions, 1629 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:03,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:03,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:32:03,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:04,067 INFO L124 PetriNetUnfolderBase]: 434/892 cut-off events. [2024-06-04 15:32:04,067 INFO L125 PetriNetUnfolderBase]: For 40982/40982 co-relation queries the response was YES. [2024-06-04 15:32:04,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4738 conditions, 892 events. 434/892 cut-off events. For 40982/40982 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5159 event pairs, 88 based on Foata normal form. 2/893 useless extension candidates. Maximal degree in co-relation 4615. Up to 772 conditions per place. [2024-06-04 15:32:04,074 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 183 selfloop transitions, 22 changer transitions 0/209 dead transitions. [2024-06-04 15:32:04,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 209 transitions, 2113 flow [2024-06-04 15:32:04,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:32:04,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:32:04,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-04 15:32:04,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-04 15:32:04,076 INFO L175 Difference]: Start difference. First operand has 260 places, 190 transitions, 1629 flow. Second operand 11 states and 142 transitions. [2024-06-04 15:32:04,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 209 transitions, 2113 flow [2024-06-04 15:32:04,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 209 transitions, 2047 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-04 15:32:04,201 INFO L231 Difference]: Finished difference. Result has 262 places, 191 transitions, 1643 flow [2024-06-04 15:32:04,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1563, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1643, PETRI_PLACES=262, PETRI_TRANSITIONS=191} [2024-06-04 15:32:04,202 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 231 predicate places. [2024-06-04 15:32:04,202 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 191 transitions, 1643 flow [2024-06-04 15:32:04,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:04,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:04,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:04,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-04 15:32:04,203 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)] === [2024-06-04 15:32:04,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:04,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1977863373, now seen corresponding path program 12 times [2024-06-04 15:32:04,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:04,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758592892] [2024-06-04 15:32:04,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:04,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:04,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:05,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:05,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:05,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758592892] [2024-06-04 15:32:05,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758592892] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:05,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:05,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:32:05,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246947397] [2024-06-04 15:32:05,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:05,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:32:05,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:05,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:32:05,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:32:05,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:32:05,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 191 transitions, 1643 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:05,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:05,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:32:05,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:05,655 INFO L124 PetriNetUnfolderBase]: 456/938 cut-off events. [2024-06-04 15:32:05,655 INFO L125 PetriNetUnfolderBase]: For 60590/60590 co-relation queries the response was YES. [2024-06-04 15:32:05,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5019 conditions, 938 events. 456/938 cut-off events. For 60590/60590 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5466 event pairs, 98 based on Foata normal form. 10/947 useless extension candidates. Maximal degree in co-relation 4895. Up to 789 conditions per place. [2024-06-04 15:32:05,663 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 179 selfloop transitions, 20 changer transitions 11/214 dead transitions. [2024-06-04 15:32:05,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 214 transitions, 2237 flow [2024-06-04 15:32:05,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:32:05,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:32:05,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-04 15:32:05,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-04 15:32:05,666 INFO L175 Difference]: Start difference. First operand has 262 places, 191 transitions, 1643 flow. Second operand 11 states and 146 transitions. [2024-06-04 15:32:05,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 214 transitions, 2237 flow [2024-06-04 15:32:05,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 214 transitions, 2167 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-04 15:32:05,798 INFO L231 Difference]: Finished difference. Result has 265 places, 190 transitions, 1612 flow [2024-06-04 15:32:05,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1573, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1612, PETRI_PLACES=265, PETRI_TRANSITIONS=190} [2024-06-04 15:32:05,799 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 234 predicate places. [2024-06-04 15:32:05,799 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 190 transitions, 1612 flow [2024-06-04 15:32:05,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:05,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:05,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:05,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-04 15:32:05,799 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)] === [2024-06-04 15:32:05,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:05,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1964173773, now seen corresponding path program 13 times [2024-06-04 15:32:05,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:05,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311457720] [2024-06-04 15:32:05,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:05,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:05,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:06,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:06,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:06,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311457720] [2024-06-04 15:32:06,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311457720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:06,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:06,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:32:06,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615704729] [2024-06-04 15:32:06,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:06,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:32:06,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:06,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:32:06,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:32:07,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:32:07,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 190 transitions, 1612 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:07,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:07,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:32:07,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:07,441 INFO L124 PetriNetUnfolderBase]: 436/898 cut-off events. [2024-06-04 15:32:07,442 INFO L125 PetriNetUnfolderBase]: For 43139/43139 co-relation queries the response was YES. [2024-06-04 15:32:07,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4747 conditions, 898 events. 436/898 cut-off events. For 43139/43139 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5204 event pairs, 93 based on Foata normal form. 2/899 useless extension candidates. Maximal degree in co-relation 4621. Up to 783 conditions per place. [2024-06-04 15:32:07,451 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 182 selfloop transitions, 22 changer transitions 0/208 dead transitions. [2024-06-04 15:32:07,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 208 transitions, 2094 flow [2024-06-04 15:32:07,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:32:07,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:32:07,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-04 15:32:07,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-04 15:32:07,453 INFO L175 Difference]: Start difference. First operand has 265 places, 190 transitions, 1612 flow. Second operand 11 states and 141 transitions. [2024-06-04 15:32:07,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 208 transitions, 2094 flow [2024-06-04 15:32:07,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 208 transitions, 2048 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-04 15:32:07,647 INFO L231 Difference]: Finished difference. Result has 264 places, 191 transitions, 1648 flow [2024-06-04 15:32:07,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1566, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1648, PETRI_PLACES=264, PETRI_TRANSITIONS=191} [2024-06-04 15:32:07,648 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 233 predicate places. [2024-06-04 15:32:07,648 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 191 transitions, 1648 flow [2024-06-04 15:32:07,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:07,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:07,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:07,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-04 15:32:07,649 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)] === [2024-06-04 15:32:07,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:07,649 INFO L85 PathProgramCache]: Analyzing trace with hash 2100134851, now seen corresponding path program 14 times [2024-06-04 15:32:07,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:07,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079087730] [2024-06-04 15:32:07,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:07,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:07,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:08,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:08,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:08,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079087730] [2024-06-04 15:32:08,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079087730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:08,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:08,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:32:08,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898302188] [2024-06-04 15:32:08,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:08,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:32:08,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:08,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:32:08,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:32:08,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:32:08,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 191 transitions, 1648 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:08,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:08,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:32:08,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:09,255 INFO L124 PetriNetUnfolderBase]: 448/926 cut-off events. [2024-06-04 15:32:09,255 INFO L125 PetriNetUnfolderBase]: For 55702/55702 co-relation queries the response was YES. [2024-06-04 15:32:09,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4912 conditions, 926 events. 448/926 cut-off events. For 55702/55702 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5388 event pairs, 57 based on Foata normal form. 8/933 useless extension candidates. Maximal degree in co-relation 4787. Up to 738 conditions per place. [2024-06-04 15:32:09,265 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 174 selfloop transitions, 19 changer transitions 17/214 dead transitions. [2024-06-04 15:32:09,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 214 transitions, 2170 flow [2024-06-04 15:32:09,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:32:09,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:32:09,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-04 15:32:09,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-04 15:32:09,273 INFO L175 Difference]: Start difference. First operand has 264 places, 191 transitions, 1648 flow. Second operand 11 states and 143 transitions. [2024-06-04 15:32:09,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 214 transitions, 2170 flow [2024-06-04 15:32:09,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 214 transitions, 2098 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-04 15:32:09,498 INFO L231 Difference]: Finished difference. Result has 266 places, 187 transitions, 1592 flow [2024-06-04 15:32:09,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1576, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1592, PETRI_PLACES=266, PETRI_TRANSITIONS=187} [2024-06-04 15:32:09,498 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 235 predicate places. [2024-06-04 15:32:09,498 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 187 transitions, 1592 flow [2024-06-04 15:32:09,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:09,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:09,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:09,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-04 15:32:09,499 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)] === [2024-06-04 15:32:09,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:09,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1400179909, now seen corresponding path program 15 times [2024-06-04 15:32:09,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:09,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924701131] [2024-06-04 15:32:09,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:09,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:09,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:10,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:10,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:10,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924701131] [2024-06-04 15:32:10,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924701131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:10,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:10,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:32:10,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806954997] [2024-06-04 15:32:10,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:10,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:32:10,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:10,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:32:10,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:32:10,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:32:10,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 187 transitions, 1592 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:10,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:10,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:32:10,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:10,907 INFO L124 PetriNetUnfolderBase]: 433/895 cut-off events. [2024-06-04 15:32:10,907 INFO L125 PetriNetUnfolderBase]: For 58148/58148 co-relation queries the response was YES. [2024-06-04 15:32:10,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4776 conditions, 895 events. 433/895 cut-off events. For 58148/58148 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5147 event pairs, 65 based on Foata normal form. 8/902 useless extension candidates. Maximal degree in co-relation 4650. Up to 662 conditions per place. [2024-06-04 15:32:10,916 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 163 selfloop transitions, 13 changer transitions 27/207 dead transitions. [2024-06-04 15:32:10,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 207 transitions, 2092 flow [2024-06-04 15:32:10,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:32:10,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:32:10,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-04 15:32:10,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-04 15:32:10,917 INFO L175 Difference]: Start difference. First operand has 266 places, 187 transitions, 1592 flow. Second operand 10 states and 130 transitions. [2024-06-04 15:32:10,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 207 transitions, 2092 flow [2024-06-04 15:32:11,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 207 transitions, 2048 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-04 15:32:11,064 INFO L231 Difference]: Finished difference. Result has 260 places, 173 transitions, 1469 flow [2024-06-04 15:32:11,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1548, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1469, PETRI_PLACES=260, PETRI_TRANSITIONS=173} [2024-06-04 15:32:11,064 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 229 predicate places. [2024-06-04 15:32:11,064 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 173 transitions, 1469 flow [2024-06-04 15:32:11,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:11,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:11,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:11,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-04 15:32:11,065 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)] === [2024-06-04 15:32:11,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:11,065 INFO L85 PathProgramCache]: Analyzing trace with hash -99836835, now seen corresponding path program 16 times [2024-06-04 15:32:11,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:11,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912155530] [2024-06-04 15:32:11,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:11,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:11,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:12,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:12,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:12,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912155530] [2024-06-04 15:32:12,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912155530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:12,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:12,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:32:12,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164525063] [2024-06-04 15:32:12,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:12,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:32:12,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:12,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:32:12,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:32:12,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:32:12,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 173 transitions, 1469 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:12,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:12,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:32:12,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:12,402 INFO L124 PetriNetUnfolderBase]: 375/783 cut-off events. [2024-06-04 15:32:12,403 INFO L125 PetriNetUnfolderBase]: For 57897/57897 co-relation queries the response was YES. [2024-06-04 15:32:12,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4352 conditions, 783 events. 375/783 cut-off events. For 57897/57897 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4340 event pairs, 46 based on Foata normal form. 8/790 useless extension candidates. Maximal degree in co-relation 4242. Up to 583 conditions per place. [2024-06-04 15:32:12,409 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 150 selfloop transitions, 16 changer transitions 20/190 dead transitions. [2024-06-04 15:32:12,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 190 transitions, 1927 flow [2024-06-04 15:32:12,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:32:12,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:32:12,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-04 15:32:12,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-04 15:32:12,410 INFO L175 Difference]: Start difference. First operand has 260 places, 173 transitions, 1469 flow. Second operand 10 states and 127 transitions. [2024-06-04 15:32:12,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 190 transitions, 1927 flow [2024-06-04 15:32:12,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 190 transitions, 1881 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-04 15:32:12,570 INFO L231 Difference]: Finished difference. Result has 244 places, 162 transitions, 1377 flow [2024-06-04 15:32:12,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1427, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1377, PETRI_PLACES=244, PETRI_TRANSITIONS=162} [2024-06-04 15:32:12,584 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 213 predicate places. [2024-06-04 15:32:12,584 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 162 transitions, 1377 flow [2024-06-04 15:32:12,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:12,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:12,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:12,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-04 15:32:12,585 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)] === [2024-06-04 15:32:12,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:12,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1350120251, now seen corresponding path program 17 times [2024-06-04 15:32:12,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:12,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064841683] [2024-06-04 15:32:12,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:12,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:12,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:13,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:13,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:13,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064841683] [2024-06-04 15:32:13,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064841683] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:13,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:13,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:32:13,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804803431] [2024-06-04 15:32:13,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:13,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:32:13,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:13,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:32:13,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:32:13,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:32:13,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 162 transitions, 1377 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:13,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:13,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:32:13,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:13,771 INFO L124 PetriNetUnfolderBase]: 341/721 cut-off events. [2024-06-04 15:32:13,771 INFO L125 PetriNetUnfolderBase]: For 54464/54464 co-relation queries the response was YES. [2024-06-04 15:32:13,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4091 conditions, 721 events. 341/721 cut-off events. For 54464/54464 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3954 event pairs, 53 based on Foata normal form. 10/730 useless extension candidates. Maximal degree in co-relation 3986. Up to 549 conditions per place. [2024-06-04 15:32:13,777 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 142 selfloop transitions, 19 changer transitions 14/179 dead transitions. [2024-06-04 15:32:13,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 179 transitions, 1873 flow [2024-06-04 15:32:13,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:32:13,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:32:13,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-04 15:32:13,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-04 15:32:13,778 INFO L175 Difference]: Start difference. First operand has 244 places, 162 transitions, 1377 flow. Second operand 10 states and 128 transitions. [2024-06-04 15:32:13,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 179 transitions, 1873 flow [2024-06-04 15:32:13,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 179 transitions, 1819 flow, removed 11 selfloop flow, removed 11 redundant places. [2024-06-04 15:32:13,884 INFO L231 Difference]: Finished difference. Result has 232 places, 156 transitions, 1328 flow [2024-06-04 15:32:13,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1331, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1328, PETRI_PLACES=232, PETRI_TRANSITIONS=156} [2024-06-04 15:32:13,884 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 201 predicate places. [2024-06-04 15:32:13,884 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 156 transitions, 1328 flow [2024-06-04 15:32:13,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:13,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:13,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:13,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-04 15:32:13,885 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)] === [2024-06-04 15:32:13,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:13,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1349942621, now seen corresponding path program 18 times [2024-06-04 15:32:13,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:13,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779205402] [2024-06-04 15:32:13,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:13,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:13,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:14,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:14,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:14,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779205402] [2024-06-04 15:32:14,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779205402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:14,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:14,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:32:14,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414290106] [2024-06-04 15:32:14,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:14,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:32:14,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:14,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:32:14,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:32:14,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:32:14,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 156 transitions, 1328 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:14,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:14,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:32:14,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:15,227 INFO L124 PetriNetUnfolderBase]: 322/688 cut-off events. [2024-06-04 15:32:15,228 INFO L125 PetriNetUnfolderBase]: For 43532/43532 co-relation queries the response was YES. [2024-06-04 15:32:15,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3799 conditions, 688 events. 322/688 cut-off events. For 43532/43532 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3731 event pairs, 38 based on Foata normal form. 8/695 useless extension candidates. Maximal degree in co-relation 3698. Up to 503 conditions per place. [2024-06-04 15:32:15,235 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 131 selfloop transitions, 7 changer transitions 30/172 dead transitions. [2024-06-04 15:32:15,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 172 transitions, 1740 flow [2024-06-04 15:32:15,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:32:15,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:32:15,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-04 15:32:15,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-04 15:32:15,236 INFO L175 Difference]: Start difference. First operand has 232 places, 156 transitions, 1328 flow. Second operand 10 states and 125 transitions. [2024-06-04 15:32:15,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 172 transitions, 1740 flow [2024-06-04 15:32:15,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 172 transitions, 1679 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-04 15:32:15,344 INFO L231 Difference]: Finished difference. Result has 226 places, 138 transitions, 1144 flow [2024-06-04 15:32:15,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1271, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1144, PETRI_PLACES=226, PETRI_TRANSITIONS=138} [2024-06-04 15:32:15,351 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 195 predicate places. [2024-06-04 15:32:15,351 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 138 transitions, 1144 flow [2024-06-04 15:32:15,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:15,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:15,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:15,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-04 15:32:15,351 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)] === [2024-06-04 15:32:15,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:15,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1623947897, now seen corresponding path program 19 times [2024-06-04 15:32:15,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:15,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223466999] [2024-06-04 15:32:15,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:15,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:15,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:16,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:16,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:16,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223466999] [2024-06-04 15:32:16,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223466999] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:16,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:16,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:32:16,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572415204] [2024-06-04 15:32:16,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:16,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:32:16,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:16,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:32:16,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:32:16,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:32:16,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 138 transitions, 1144 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:16,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:16,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:32:16,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:16,651 INFO L124 PetriNetUnfolderBase]: 289/607 cut-off events. [2024-06-04 15:32:16,652 INFO L125 PetriNetUnfolderBase]: For 44014/44014 co-relation queries the response was YES. [2024-06-04 15:32:16,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3447 conditions, 607 events. 289/607 cut-off events. For 44014/44014 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3155 event pairs, 40 based on Foata normal form. 10/616 useless extension candidates. Maximal degree in co-relation 3349. Up to 438 conditions per place. [2024-06-04 15:32:16,656 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 110 selfloop transitions, 32 changer transitions 6/152 dead transitions. [2024-06-04 15:32:16,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 152 transitions, 1540 flow [2024-06-04 15:32:16,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:32:16,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:32:16,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-04 15:32:16,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-04 15:32:16,657 INFO L175 Difference]: Start difference. First operand has 226 places, 138 transitions, 1144 flow. Second operand 10 states and 130 transitions. [2024-06-04 15:32:16,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 152 transitions, 1540 flow [2024-06-04 15:32:16,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 152 transitions, 1491 flow, removed 14 selfloop flow, removed 12 redundant places. [2024-06-04 15:32:16,745 INFO L231 Difference]: Finished difference. Result has 205 places, 136 transitions, 1167 flow [2024-06-04 15:32:16,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1103, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1167, PETRI_PLACES=205, PETRI_TRANSITIONS=136} [2024-06-04 15:32:16,752 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 174 predicate places. [2024-06-04 15:32:16,753 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 136 transitions, 1167 flow [2024-06-04 15:32:16,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:16,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:16,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:16,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-04 15:32:16,753 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)] === [2024-06-04 15:32:16,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:16,754 INFO L85 PathProgramCache]: Analyzing trace with hash 976031131, now seen corresponding path program 5 times [2024-06-04 15:32:16,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:16,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789164055] [2024-06-04 15:32:16,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:16,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:16,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:18,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:18,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:18,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789164055] [2024-06-04 15:32:18,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789164055] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:18,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:18,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:32:18,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759176859] [2024-06-04 15:32:18,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:18,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:32:18,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:18,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:32:18,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:32:18,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:32:18,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 136 transitions, 1167 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:18,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:18,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:32:18,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:18,477 INFO L124 PetriNetUnfolderBase]: 284/602 cut-off events. [2024-06-04 15:32:18,477 INFO L125 PetriNetUnfolderBase]: For 34053/34053 co-relation queries the response was YES. [2024-06-04 15:32:18,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3348 conditions, 602 events. 284/602 cut-off events. For 34053/34053 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3127 event pairs, 42 based on Foata normal form. 8/609 useless extension candidates. Maximal degree in co-relation 3255. Up to 434 conditions per place. [2024-06-04 15:32:18,484 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 110 selfloop transitions, 29 changer transitions 7/150 dead transitions. [2024-06-04 15:32:18,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 150 transitions, 1533 flow [2024-06-04 15:32:18,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:32:18,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:32:18,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-04 15:32:18,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-04 15:32:18,485 INFO L175 Difference]: Start difference. First operand has 205 places, 136 transitions, 1167 flow. Second operand 11 states and 140 transitions. [2024-06-04 15:32:18,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 150 transitions, 1533 flow [2024-06-04 15:32:18,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 150 transitions, 1420 flow, removed 15 selfloop flow, removed 12 redundant places. [2024-06-04 15:32:18,571 INFO L231 Difference]: Finished difference. Result has 204 places, 133 transitions, 1103 flow [2024-06-04 15:32:18,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1058, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1103, PETRI_PLACES=204, PETRI_TRANSITIONS=133} [2024-06-04 15:32:18,572 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 173 predicate places. [2024-06-04 15:32:18,572 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 133 transitions, 1103 flow [2024-06-04 15:32:18,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:18,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:18,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:18,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-04 15:32:18,573 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)] === [2024-06-04 15:32:18,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:18,573 INFO L85 PathProgramCache]: Analyzing trace with hash 648520769, now seen corresponding path program 6 times [2024-06-04 15:32:18,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:18,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720872299] [2024-06-04 15:32:18,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:18,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:18,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:19,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:19,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:19,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720872299] [2024-06-04 15:32:19,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720872299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:19,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:19,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:32:19,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438721867] [2024-06-04 15:32:19,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:19,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:32:19,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:19,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:32:19,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:32:20,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:32:20,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 133 transitions, 1103 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:20,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:20,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:32:20,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:20,370 INFO L124 PetriNetUnfolderBase]: 304/646 cut-off events. [2024-06-04 15:32:20,370 INFO L125 PetriNetUnfolderBase]: For 44682/44682 co-relation queries the response was YES. [2024-06-04 15:32:20,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4004 conditions, 646 events. 304/646 cut-off events. For 44682/44682 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3436 event pairs, 55 based on Foata normal form. 6/651 useless extension candidates. Maximal degree in co-relation 3913. Up to 377 conditions per place. [2024-06-04 15:32:20,375 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 116 selfloop transitions, 25 changer transitions 7/152 dead transitions. [2024-06-04 15:32:20,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 152 transitions, 1631 flow [2024-06-04 15:32:20,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:32:20,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:32:20,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-04 15:32:20,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-04 15:32:20,376 INFO L175 Difference]: Start difference. First operand has 204 places, 133 transitions, 1103 flow. Second operand 11 states and 142 transitions. [2024-06-04 15:32:20,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 152 transitions, 1631 flow [2024-06-04 15:32:20,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 152 transitions, 1545 flow, removed 9 selfloop flow, removed 12 redundant places. [2024-06-04 15:32:20,477 INFO L231 Difference]: Finished difference. Result has 201 places, 130 transitions, 1060 flow [2024-06-04 15:32:20,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1027, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1060, PETRI_PLACES=201, PETRI_TRANSITIONS=130} [2024-06-04 15:32:20,478 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 170 predicate places. [2024-06-04 15:32:20,478 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 130 transitions, 1060 flow [2024-06-04 15:32:20,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:20,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:20,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:20,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-04 15:32:20,478 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)] === [2024-06-04 15:32:20,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:20,479 INFO L85 PathProgramCache]: Analyzing trace with hash 741025117, now seen corresponding path program 20 times [2024-06-04 15:32:20,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:20,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648839874] [2024-06-04 15:32:20,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:20,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:20,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:21,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:21,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:21,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648839874] [2024-06-04 15:32:21,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648839874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:21,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:21,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:32:21,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608398130] [2024-06-04 15:32:21,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:21,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:32:21,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:21,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:32:21,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:32:21,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:32:21,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 130 transitions, 1060 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:21,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:21,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:32:21,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:22,176 INFO L124 PetriNetUnfolderBase]: 293/617 cut-off events. [2024-06-04 15:32:22,176 INFO L125 PetriNetUnfolderBase]: For 38297/38297 co-relation queries the response was YES. [2024-06-04 15:32:22,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3826 conditions, 617 events. 293/617 cut-off events. For 38297/38297 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3230 event pairs, 51 based on Foata normal form. 2/618 useless extension candidates. Maximal degree in co-relation 3737. Up to 505 conditions per place. [2024-06-04 15:32:22,181 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 118 selfloop transitions, 20 changer transitions 0/142 dead transitions. [2024-06-04 15:32:22,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 142 transitions, 1378 flow [2024-06-04 15:32:22,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:32:22,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:32:22,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-04 15:32:22,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-04 15:32:22,183 INFO L175 Difference]: Start difference. First operand has 201 places, 130 transitions, 1060 flow. Second operand 10 states and 121 transitions. [2024-06-04 15:32:22,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 142 transitions, 1378 flow [2024-06-04 15:32:22,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 142 transitions, 1325 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 15:32:22,270 INFO L231 Difference]: Finished difference. Result has 198 places, 131 transitions, 1073 flow [2024-06-04 15:32:22,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1007, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1073, PETRI_PLACES=198, PETRI_TRANSITIONS=131} [2024-06-04 15:32:22,270 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 167 predicate places. [2024-06-04 15:32:22,271 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 131 transitions, 1073 flow [2024-06-04 15:32:22,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:22,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:22,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:22,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-04 15:32:22,271 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)] === [2024-06-04 15:32:22,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:22,272 INFO L85 PathProgramCache]: Analyzing trace with hash 471023325, now seen corresponding path program 21 times [2024-06-04 15:32:22,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:22,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35511650] [2024-06-04 15:32:22,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:22,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:22,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:23,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:23,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:23,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35511650] [2024-06-04 15:32:23,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35511650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:23,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:23,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:32:23,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325038887] [2024-06-04 15:32:23,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:23,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:32:23,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:23,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:32:23,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:32:23,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:32:23,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 131 transitions, 1073 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:23,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:23,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:32:23,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:23,727 INFO L124 PetriNetUnfolderBase]: 305/645 cut-off events. [2024-06-04 15:32:23,727 INFO L125 PetriNetUnfolderBase]: For 43754/43754 co-relation queries the response was YES. [2024-06-04 15:32:23,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3939 conditions, 645 events. 305/645 cut-off events. For 43754/43754 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3410 event pairs, 55 based on Foata normal form. 8/652 useless extension candidates. Maximal degree in co-relation 3851. Up to 521 conditions per place. [2024-06-04 15:32:23,732 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 117 selfloop transitions, 13 changer transitions 12/146 dead transitions. [2024-06-04 15:32:23,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 146 transitions, 1419 flow [2024-06-04 15:32:23,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:32:23,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:32:23,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-04 15:32:23,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-04 15:32:23,733 INFO L175 Difference]: Start difference. First operand has 198 places, 131 transitions, 1073 flow. Second operand 10 states and 124 transitions. [2024-06-04 15:32:23,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 146 transitions, 1419 flow [2024-06-04 15:32:23,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 146 transitions, 1363 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-04 15:32:23,829 INFO L231 Difference]: Finished difference. Result has 200 places, 128 transitions, 1031 flow [2024-06-04 15:32:23,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1019, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1031, PETRI_PLACES=200, PETRI_TRANSITIONS=128} [2024-06-04 15:32:23,830 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 169 predicate places. [2024-06-04 15:32:23,830 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 128 transitions, 1031 flow [2024-06-04 15:32:23,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:23,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:23,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:23,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-04 15:32:23,831 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)] === [2024-06-04 15:32:23,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:23,831 INFO L85 PathProgramCache]: Analyzing trace with hash 642018705, now seen corresponding path program 22 times [2024-06-04 15:32:23,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:23,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672010677] [2024-06-04 15:32:23,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:23,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:23,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:25,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:25,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:25,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672010677] [2024-06-04 15:32:25,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672010677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:25,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:25,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:32:25,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525778094] [2024-06-04 15:32:25,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:25,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:32:25,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:25,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:32:25,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:32:25,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:32:25,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 128 transitions, 1031 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:25,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:25,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:32:25,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:25,463 INFO L124 PetriNetUnfolderBase]: 280/594 cut-off events. [2024-06-04 15:32:25,463 INFO L125 PetriNetUnfolderBase]: For 34122/34124 co-relation queries the response was YES. [2024-06-04 15:32:25,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3590 conditions, 594 events. 280/594 cut-off events. For 34122/34124 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3074 event pairs, 54 based on Foata normal form. 4/597 useless extension candidates. Maximal degree in co-relation 3501. Up to 474 conditions per place. [2024-06-04 15:32:25,467 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 108 selfloop transitions, 27 changer transitions 0/139 dead transitions. [2024-06-04 15:32:25,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 139 transitions, 1341 flow [2024-06-04 15:32:25,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:32:25,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:32:25,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-04 15:32:25,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-04 15:32:25,469 INFO L175 Difference]: Start difference. First operand has 200 places, 128 transitions, 1031 flow. Second operand 10 states and 124 transitions. [2024-06-04 15:32:25,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 139 transitions, 1341 flow [2024-06-04 15:32:25,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 139 transitions, 1309 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-04 15:32:25,534 INFO L231 Difference]: Finished difference. Result has 196 places, 129 transitions, 1077 flow [2024-06-04 15:32:25,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=999, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1077, PETRI_PLACES=196, PETRI_TRANSITIONS=129} [2024-06-04 15:32:25,534 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 165 predicate places. [2024-06-04 15:32:25,534 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 129 transitions, 1077 flow [2024-06-04 15:32:25,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:25,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:25,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:25,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-04 15:32:25,535 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)] === [2024-06-04 15:32:25,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:25,535 INFO L85 PathProgramCache]: Analyzing trace with hash 641841075, now seen corresponding path program 23 times [2024-06-04 15:32:25,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:25,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855202615] [2024-06-04 15:32:25,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:25,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:25,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:26,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:26,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:26,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855202615] [2024-06-04 15:32:26,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855202615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:26,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:26,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:32:26,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765326003] [2024-06-04 15:32:26,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:26,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:32:26,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:26,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:32:26,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:32:26,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:32:26,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 129 transitions, 1077 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:26,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:26,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:32:26,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:27,222 INFO L124 PetriNetUnfolderBase]: 284/602 cut-off events. [2024-06-04 15:32:27,222 INFO L125 PetriNetUnfolderBase]: For 32055/32057 co-relation queries the response was YES. [2024-06-04 15:32:27,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3632 conditions, 602 events. 284/602 cut-off events. For 32055/32057 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3143 event pairs, 44 based on Foata normal form. 4/605 useless extension candidates. Maximal degree in co-relation 3545. Up to 442 conditions per place. [2024-06-04 15:32:27,226 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 105 selfloop transitions, 32 changer transitions 0/141 dead transitions. [2024-06-04 15:32:27,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 141 transitions, 1395 flow [2024-06-04 15:32:27,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:32:27,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:32:27,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-04 15:32:27,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-04 15:32:27,227 INFO L175 Difference]: Start difference. First operand has 196 places, 129 transitions, 1077 flow. Second operand 10 states and 126 transitions. [2024-06-04 15:32:27,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 141 transitions, 1395 flow [2024-06-04 15:32:27,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 141 transitions, 1327 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-04 15:32:27,297 INFO L231 Difference]: Finished difference. Result has 198 places, 130 transitions, 1101 flow [2024-06-04 15:32:27,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1009, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1101, PETRI_PLACES=198, PETRI_TRANSITIONS=130} [2024-06-04 15:32:27,297 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 167 predicate places. [2024-06-04 15:32:27,297 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 130 transitions, 1101 flow [2024-06-04 15:32:27,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:27,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:27,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:27,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-04 15:32:27,298 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)] === [2024-06-04 15:32:27,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:27,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1670369411, now seen corresponding path program 7 times [2024-06-04 15:32:27,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:27,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640537161] [2024-06-04 15:32:27,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:27,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:27,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:29,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:29,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:29,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640537161] [2024-06-04 15:32:29,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640537161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:29,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:29,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:32:29,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959137438] [2024-06-04 15:32:29,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:29,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:32:29,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:29,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:32:29,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:32:29,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:32:29,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 130 transitions, 1101 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:29,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:29,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:32:29,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:29,538 INFO L124 PetriNetUnfolderBase]: 289/617 cut-off events. [2024-06-04 15:32:29,538 INFO L125 PetriNetUnfolderBase]: For 37251/37251 co-relation queries the response was YES. [2024-06-04 15:32:29,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3591 conditions, 617 events. 289/617 cut-off events. For 37251/37251 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3223 event pairs, 57 based on Foata normal form. 8/624 useless extension candidates. Maximal degree in co-relation 3503. Up to 461 conditions per place. [2024-06-04 15:32:29,543 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 106 selfloop transitions, 21 changer transitions 13/144 dead transitions. [2024-06-04 15:32:29,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 144 transitions, 1449 flow [2024-06-04 15:32:29,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:32:29,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:32:29,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-04 15:32:29,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-04 15:32:29,544 INFO L175 Difference]: Start difference. First operand has 198 places, 130 transitions, 1101 flow. Second operand 11 states and 137 transitions. [2024-06-04 15:32:29,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 144 transitions, 1449 flow [2024-06-04 15:32:29,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 144 transitions, 1369 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-04 15:32:29,616 INFO L231 Difference]: Finished difference. Result has 200 places, 124 transitions, 1025 flow [2024-06-04 15:32:29,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1021, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1025, PETRI_PLACES=200, PETRI_TRANSITIONS=124} [2024-06-04 15:32:29,616 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 169 predicate places. [2024-06-04 15:32:29,616 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 124 transitions, 1025 flow [2024-06-04 15:32:29,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:29,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:29,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:29,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-04 15:32:29,617 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)] === [2024-06-04 15:32:29,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:29,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1815873423, now seen corresponding path program 24 times [2024-06-04 15:32:29,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:29,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556637461] [2024-06-04 15:32:29,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:29,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:29,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:30,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:30,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:30,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556637461] [2024-06-04 15:32:30,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556637461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:30,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:30,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:32:30,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735577830] [2024-06-04 15:32:30,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:30,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:32:30,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:30,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:32:30,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:32:30,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:32:30,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 124 transitions, 1025 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:30,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:30,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:32:30,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:31,060 INFO L124 PetriNetUnfolderBase]: 281/607 cut-off events. [2024-06-04 15:32:31,060 INFO L125 PetriNetUnfolderBase]: For 39754/39754 co-relation queries the response was YES. [2024-06-04 15:32:31,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3505 conditions, 607 events. 281/607 cut-off events. For 39754/39754 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3170 event pairs, 62 based on Foata normal form. 10/614 useless extension candidates. Maximal degree in co-relation 3417. Up to 364 conditions per place. [2024-06-04 15:32:31,065 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 72 selfloop transitions, 54 changer transitions 6/136 dead transitions. [2024-06-04 15:32:31,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 136 transitions, 1371 flow [2024-06-04 15:32:31,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:32:31,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:32:31,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-04 15:32:31,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-04 15:32:31,066 INFO L175 Difference]: Start difference. First operand has 200 places, 124 transitions, 1025 flow. Second operand 10 states and 135 transitions. [2024-06-04 15:32:31,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 136 transitions, 1371 flow [2024-06-04 15:32:31,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 136 transitions, 1317 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-04 15:32:31,149 INFO L231 Difference]: Finished difference. Result has 193 places, 122 transitions, 1091 flow [2024-06-04 15:32:31,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=973, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1091, PETRI_PLACES=193, PETRI_TRANSITIONS=122} [2024-06-04 15:32:31,164 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 162 predicate places. [2024-06-04 15:32:31,164 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 122 transitions, 1091 flow [2024-06-04 15:32:31,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:31,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:31,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:31,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-04 15:32:31,165 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)] === [2024-06-04 15:32:31,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:31,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1230781997, now seen corresponding path program 8 times [2024-06-04 15:32:31,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:31,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075604922] [2024-06-04 15:32:31,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:31,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:31,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:32,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:32,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:32,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075604922] [2024-06-04 15:32:32,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075604922] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:32,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:32,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:32:32,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470816964] [2024-06-04 15:32:32,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:32,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:32:32,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:32,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:32:32,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:32:32,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:32:32,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 122 transitions, 1091 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:32,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:32,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:32:32,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:33,259 INFO L124 PetriNetUnfolderBase]: 294/636 cut-off events. [2024-06-04 15:32:33,259 INFO L125 PetriNetUnfolderBase]: For 39762/39764 co-relation queries the response was YES. [2024-06-04 15:32:33,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4017 conditions, 636 events. 294/636 cut-off events. For 39762/39764 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3384 event pairs, 68 based on Foata normal form. 8/642 useless extension candidates. Maximal degree in co-relation 3932. Up to 381 conditions per place. [2024-06-04 15:32:33,264 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 82 selfloop transitions, 45 changer transitions 7/138 dead transitions. [2024-06-04 15:32:33,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 138 transitions, 1549 flow [2024-06-04 15:32:33,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:32:33,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:32:33,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-04 15:32:33,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-04 15:32:33,275 INFO L175 Difference]: Start difference. First operand has 193 places, 122 transitions, 1091 flow. Second operand 12 states and 153 transitions. [2024-06-04 15:32:33,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 138 transitions, 1549 flow [2024-06-04 15:32:33,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 138 transitions, 1421 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-04 15:32:33,386 INFO L231 Difference]: Finished difference. Result has 195 places, 119 transitions, 1039 flow [2024-06-04 15:32:33,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=965, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1039, PETRI_PLACES=195, PETRI_TRANSITIONS=119} [2024-06-04 15:32:33,386 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 164 predicate places. [2024-06-04 15:32:33,387 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 119 transitions, 1039 flow [2024-06-04 15:32:33,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:33,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:33,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:33,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-04 15:32:33,387 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)] === [2024-06-04 15:32:33,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:33,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1417933315, now seen corresponding path program 9 times [2024-06-04 15:32:33,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:33,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266344224] [2024-06-04 15:32:33,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:33,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:33,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:34,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:34,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:34,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266344224] [2024-06-04 15:32:34,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266344224] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:34,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:34,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:32:34,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730899009] [2024-06-04 15:32:34,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:34,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:32:34,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:34,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:32:34,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:32:34,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:32:34,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 119 transitions, 1039 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:34,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:34,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:32:34,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:35,264 INFO L124 PetriNetUnfolderBase]: 291/627 cut-off events. [2024-06-04 15:32:35,264 INFO L125 PetriNetUnfolderBase]: For 41822/41824 co-relation queries the response was YES. [2024-06-04 15:32:35,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3955 conditions, 627 events. 291/627 cut-off events. For 41822/41824 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3330 event pairs, 72 based on Foata normal form. 10/635 useless extension candidates. Maximal degree in co-relation 3870. Up to 434 conditions per place. [2024-06-04 15:32:35,269 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 79 selfloop transitions, 39 changer transitions 9/131 dead transitions. [2024-06-04 15:32:35,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 131 transitions, 1355 flow [2024-06-04 15:32:35,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:32:35,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:32:35,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-04 15:32:35,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-04 15:32:35,271 INFO L175 Difference]: Start difference. First operand has 195 places, 119 transitions, 1039 flow. Second operand 11 states and 141 transitions. [2024-06-04 15:32:35,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 131 transitions, 1355 flow [2024-06-04 15:32:35,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 131 transitions, 1259 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-04 15:32:35,344 INFO L231 Difference]: Finished difference. Result has 191 places, 116 transitions, 1006 flow [2024-06-04 15:32:35,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=945, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1006, PETRI_PLACES=191, PETRI_TRANSITIONS=116} [2024-06-04 15:32:35,345 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 160 predicate places. [2024-06-04 15:32:35,345 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 116 transitions, 1006 flow [2024-06-04 15:32:35,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:35,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:35,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:35,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-04 15:32:35,345 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)] === [2024-06-04 15:32:35,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:35,346 INFO L85 PathProgramCache]: Analyzing trace with hash -2059318469, now seen corresponding path program 25 times [2024-06-04 15:32:35,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:35,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991606992] [2024-06-04 15:32:35,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:35,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:35,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:36,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:36,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:36,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991606992] [2024-06-04 15:32:36,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991606992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:36,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:36,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:32:36,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826783903] [2024-06-04 15:32:36,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:36,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:32:36,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:36,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:32:36,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:32:36,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:32:36,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 116 transitions, 1006 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:36,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:36,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:32:36,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:36,833 INFO L124 PetriNetUnfolderBase]: 290/632 cut-off events. [2024-06-04 15:32:36,833 INFO L125 PetriNetUnfolderBase]: For 40838/40840 co-relation queries the response was YES. [2024-06-04 15:32:36,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3891 conditions, 632 events. 290/632 cut-off events. For 40838/40840 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3387 event pairs, 74 based on Foata normal form. 12/642 useless extension candidates. Maximal degree in co-relation 3808. Up to 477 conditions per place. [2024-06-04 15:32:36,838 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 90 selfloop transitions, 28 changer transitions 6/128 dead transitions. [2024-06-04 15:32:36,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 128 transitions, 1334 flow [2024-06-04 15:32:36,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:32:36,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:32:36,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-04 15:32:36,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-04 15:32:36,839 INFO L175 Difference]: Start difference. First operand has 191 places, 116 transitions, 1006 flow. Second operand 10 states and 129 transitions. [2024-06-04 15:32:36,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 128 transitions, 1334 flow [2024-06-04 15:32:36,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 128 transitions, 1252 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-04 15:32:36,903 INFO L231 Difference]: Finished difference. Result has 188 places, 114 transitions, 988 flow [2024-06-04 15:32:36,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=924, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=988, PETRI_PLACES=188, PETRI_TRANSITIONS=114} [2024-06-04 15:32:36,903 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 157 predicate places. [2024-06-04 15:32:36,903 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 114 transitions, 988 flow [2024-06-04 15:32:36,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:36,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:36,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:36,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-04 15:32:36,904 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)] === [2024-06-04 15:32:36,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:36,904 INFO L85 PathProgramCache]: Analyzing trace with hash -2050740645, now seen corresponding path program 10 times [2024-06-04 15:32:36,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:36,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452878768] [2024-06-04 15:32:36,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:36,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:36,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:38,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:38,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:38,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452878768] [2024-06-04 15:32:38,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452878768] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:38,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:38,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:32:38,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012199766] [2024-06-04 15:32:38,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:38,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:32:38,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:38,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:32:38,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:32:38,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:32:38,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 114 transitions, 988 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:38,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:38,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:32:38,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:38,870 INFO L124 PetriNetUnfolderBase]: 310/674 cut-off events. [2024-06-04 15:32:38,871 INFO L125 PetriNetUnfolderBase]: For 44646/44648 co-relation queries the response was YES. [2024-06-04 15:32:38,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4514 conditions, 674 events. 310/674 cut-off events. For 44646/44648 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3686 event pairs, 83 based on Foata normal form. 8/680 useless extension candidates. Maximal degree in co-relation 4432. Up to 453 conditions per place. [2024-06-04 15:32:38,876 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 94 selfloop transitions, 26 changer transitions 7/131 dead transitions. [2024-06-04 15:32:38,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 131 transitions, 1448 flow [2024-06-04 15:32:38,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:32:38,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:32:38,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-04 15:32:38,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-04 15:32:38,877 INFO L175 Difference]: Start difference. First operand has 188 places, 114 transitions, 988 flow. Second operand 11 states and 141 transitions. [2024-06-04 15:32:38,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 131 transitions, 1448 flow [2024-06-04 15:32:38,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 131 transitions, 1328 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-04 15:32:38,946 INFO L231 Difference]: Finished difference. Result has 188 places, 111 transitions, 907 flow [2024-06-04 15:32:38,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=868, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=907, PETRI_PLACES=188, PETRI_TRANSITIONS=111} [2024-06-04 15:32:38,946 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 157 predicate places. [2024-06-04 15:32:38,947 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 111 transitions, 907 flow [2024-06-04 15:32:38,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:38,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:38,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:38,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-04 15:32:38,947 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)] === [2024-06-04 15:32:38,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:38,947 INFO L85 PathProgramCache]: Analyzing trace with hash -2059311525, now seen corresponding path program 11 times [2024-06-04 15:32:38,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:38,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288316010] [2024-06-04 15:32:38,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:38,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:38,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:40,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:40,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:40,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288316010] [2024-06-04 15:32:40,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288316010] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:40,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:40,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:32:40,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511992134] [2024-06-04 15:32:40,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:40,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:32:40,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:40,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:32:40,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:32:40,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:32:40,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 111 transitions, 907 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:40,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:40,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:32:40,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:41,012 INFO L124 PetriNetUnfolderBase]: 307/665 cut-off events. [2024-06-04 15:32:41,012 INFO L125 PetriNetUnfolderBase]: For 49551/49553 co-relation queries the response was YES. [2024-06-04 15:32:41,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4443 conditions, 665 events. 307/665 cut-off events. For 49551/49553 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3622 event pairs, 85 based on Foata normal form. 10/673 useless extension candidates. Maximal degree in co-relation 4362. Up to 521 conditions per place. [2024-06-04 15:32:41,017 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 86 selfloop transitions, 19 changer transitions 14/123 dead transitions. [2024-06-04 15:32:41,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 123 transitions, 1205 flow [2024-06-04 15:32:41,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:32:41,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:32:41,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-04 15:32:41,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-04 15:32:41,019 INFO L175 Difference]: Start difference. First operand has 188 places, 111 transitions, 907 flow. Second operand 11 states and 138 transitions. [2024-06-04 15:32:41,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 123 transitions, 1205 flow [2024-06-04 15:32:41,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 123 transitions, 1153 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 15:32:41,085 INFO L231 Difference]: Finished difference. Result has 186 places, 104 transitions, 850 flow [2024-06-04 15:32:41,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=855, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=850, PETRI_PLACES=186, PETRI_TRANSITIONS=104} [2024-06-04 15:32:41,085 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 155 predicate places. [2024-06-04 15:32:41,086 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 104 transitions, 850 flow [2024-06-04 15:32:41,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:41,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:41,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:41,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-04 15:32:41,086 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)] === [2024-06-04 15:32:41,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:41,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1627345793, now seen corresponding path program 26 times [2024-06-04 15:32:41,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:41,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284749557] [2024-06-04 15:32:41,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:41,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:41,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:42,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:42,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:42,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284749557] [2024-06-04 15:32:42,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284749557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:42,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:42,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:32:42,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768163558] [2024-06-04 15:32:42,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:42,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:32:42,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:42,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:32:42,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:32:42,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:32:42,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 104 transitions, 850 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:42,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:42,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:32:42,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:42,640 INFO L124 PetriNetUnfolderBase]: 286/620 cut-off events. [2024-06-04 15:32:42,640 INFO L125 PetriNetUnfolderBase]: For 40976/40978 co-relation queries the response was YES. [2024-06-04 15:32:42,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4240 conditions, 620 events. 286/620 cut-off events. For 40976/40978 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3295 event pairs, 87 based on Foata normal form. 4/622 useless extension candidates. Maximal degree in co-relation 4160. Up to 443 conditions per place. [2024-06-04 15:32:42,644 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 60 selfloop transitions, 49 changer transitions 0/113 dead transitions. [2024-06-04 15:32:42,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 113 transitions, 1108 flow [2024-06-04 15:32:42,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:32:42,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:32:42,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-04 15:32:42,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-04 15:32:42,645 INFO L175 Difference]: Start difference. First operand has 186 places, 104 transitions, 850 flow. Second operand 10 states and 131 transitions. [2024-06-04 15:32:42,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 113 transitions, 1108 flow [2024-06-04 15:32:42,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 113 transitions, 1046 flow, removed 11 selfloop flow, removed 13 redundant places. [2024-06-04 15:32:42,705 INFO L231 Difference]: Finished difference. Result has 176 places, 105 transitions, 916 flow [2024-06-04 15:32:42,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=916, PETRI_PLACES=176, PETRI_TRANSITIONS=105} [2024-06-04 15:32:42,705 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 145 predicate places. [2024-06-04 15:32:42,705 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 105 transitions, 916 flow [2024-06-04 15:32:42,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:42,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:42,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:42,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-04 15:32:42,706 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)] === [2024-06-04 15:32:42,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:42,706 INFO L85 PathProgramCache]: Analyzing trace with hash 2007747677, now seen corresponding path program 27 times [2024-06-04 15:32:42,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:42,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934370535] [2024-06-04 15:32:42,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:42,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:42,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:43,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:43,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:43,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934370535] [2024-06-04 15:32:43,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934370535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:43,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:43,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:32:43,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71445380] [2024-06-04 15:32:43,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:43,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:32:43,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:43,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:32:43,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:32:43,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:32:43,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 105 transitions, 916 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:43,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:43,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:32:43,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:44,266 INFO L124 PetriNetUnfolderBase]: 283/619 cut-off events. [2024-06-04 15:32:44,266 INFO L125 PetriNetUnfolderBase]: For 32232/32232 co-relation queries the response was YES. [2024-06-04 15:32:44,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3965 conditions, 619 events. 283/619 cut-off events. For 32232/32232 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3282 event pairs, 84 based on Foata normal form. 2/619 useless extension candidates. Maximal degree in co-relation 3890. Up to 515 conditions per place. [2024-06-04 15:32:44,270 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 87 selfloop transitions, 23 changer transitions 0/114 dead transitions. [2024-06-04 15:32:44,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 114 transitions, 1174 flow [2024-06-04 15:32:44,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:32:44,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:32:44,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-04 15:32:44,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-04 15:32:44,271 INFO L175 Difference]: Start difference. First operand has 176 places, 105 transitions, 916 flow. Second operand 10 states and 123 transitions. [2024-06-04 15:32:44,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 114 transitions, 1174 flow [2024-06-04 15:32:44,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 114 transitions, 1060 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-04 15:32:44,342 INFO L231 Difference]: Finished difference. Result has 178 places, 106 transitions, 876 flow [2024-06-04 15:32:44,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=876, PETRI_PLACES=178, PETRI_TRANSITIONS=106} [2024-06-04 15:32:44,343 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 147 predicate places. [2024-06-04 15:32:44,343 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 106 transitions, 876 flow [2024-06-04 15:32:44,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:44,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:44,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:44,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-04 15:32:44,343 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)] === [2024-06-04 15:32:44,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:44,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1627523423, now seen corresponding path program 28 times [2024-06-04 15:32:44,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:44,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941876190] [2024-06-04 15:32:44,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:44,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:44,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:45,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:45,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:45,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941876190] [2024-06-04 15:32:45,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941876190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:45,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:45,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:32:45,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58932059] [2024-06-04 15:32:45,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:45,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:32:45,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:45,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:32:45,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:32:45,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:32:45,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 106 transitions, 876 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:45,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:45,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:32:45,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:45,977 INFO L124 PetriNetUnfolderBase]: 316/686 cut-off events. [2024-06-04 15:32:45,977 INFO L125 PetriNetUnfolderBase]: For 42922/42922 co-relation queries the response was YES. [2024-06-04 15:32:45,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4678 conditions, 686 events. 316/686 cut-off events. For 42922/42922 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3765 event pairs, 97 based on Foata normal form. 2/686 useless extension candidates. Maximal degree in co-relation 4602. Up to 426 conditions per place. [2024-06-04 15:32:45,982 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 65 selfloop transitions, 52 changer transitions 0/121 dead transitions. [2024-06-04 15:32:45,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 121 transitions, 1298 flow [2024-06-04 15:32:45,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:32:45,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:32:45,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-04 15:32:45,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-04 15:32:45,983 INFO L175 Difference]: Start difference. First operand has 178 places, 106 transitions, 876 flow. Second operand 10 states and 136 transitions. [2024-06-04 15:32:45,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 121 transitions, 1298 flow [2024-06-04 15:32:46,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 121 transitions, 1234 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-04 15:32:46,041 INFO L231 Difference]: Finished difference. Result has 180 places, 108 transitions, 970 flow [2024-06-04 15:32:46,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=812, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=970, PETRI_PLACES=180, PETRI_TRANSITIONS=108} [2024-06-04 15:32:46,041 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 149 predicate places. [2024-06-04 15:32:46,042 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 108 transitions, 970 flow [2024-06-04 15:32:46,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:46,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:46,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:46,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-04 15:32:46,042 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)] === [2024-06-04 15:32:46,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:46,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1627338849, now seen corresponding path program 12 times [2024-06-04 15:32:46,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:46,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637122530] [2024-06-04 15:32:46,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:46,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:46,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:47,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:47,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:47,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637122530] [2024-06-04 15:32:47,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637122530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:47,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:47,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:32:47,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213643686] [2024-06-04 15:32:47,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:47,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:32:47,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:47,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:32:47,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:32:47,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:32:47,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 108 transitions, 970 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:47,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:47,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:32:47,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:48,073 INFO L124 PetriNetUnfolderBase]: 306/668 cut-off events. [2024-06-04 15:32:48,073 INFO L125 PetriNetUnfolderBase]: For 42852/42852 co-relation queries the response was YES. [2024-06-04 15:32:48,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4363 conditions, 668 events. 306/668 cut-off events. For 42852/42852 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3645 event pairs, 91 based on Foata normal form. 8/674 useless extension candidates. Maximal degree in co-relation 4286. Up to 481 conditions per place. [2024-06-04 15:32:48,078 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 71 selfloop transitions, 36 changer transitions 9/120 dead transitions. [2024-06-04 15:32:48,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 120 transitions, 1258 flow [2024-06-04 15:32:48,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:32:48,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:32:48,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-04 15:32:48,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-04 15:32:48,079 INFO L175 Difference]: Start difference. First operand has 180 places, 108 transitions, 970 flow. Second operand 11 states and 140 transitions. [2024-06-04 15:32:48,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 120 transitions, 1258 flow [2024-06-04 15:32:48,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 120 transitions, 1166 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-04 15:32:48,152 INFO L231 Difference]: Finished difference. Result has 185 places, 105 transitions, 931 flow [2024-06-04 15:32:48,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=878, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=931, PETRI_PLACES=185, PETRI_TRANSITIONS=105} [2024-06-04 15:32:48,152 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 154 predicate places. [2024-06-04 15:32:48,152 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 105 transitions, 931 flow [2024-06-04 15:32:48,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:48,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:48,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:48,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-04 15:32:48,153 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)] === [2024-06-04 15:32:48,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:48,153 INFO L85 PathProgramCache]: Analyzing trace with hash 2007570047, now seen corresponding path program 29 times [2024-06-04 15:32:48,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:48,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94044134] [2024-06-04 15:32:48,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:48,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:48,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:49,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:49,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:49,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94044134] [2024-06-04 15:32:49,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94044134] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:49,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:49,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:32:49,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654694210] [2024-06-04 15:32:49,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:49,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:32:49,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:49,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:32:49,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:32:49,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:32:49,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 105 transitions, 931 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:49,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:49,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:32:49,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:49,726 INFO L124 PetriNetUnfolderBase]: 293/641 cut-off events. [2024-06-04 15:32:49,726 INFO L125 PetriNetUnfolderBase]: For 39103/39105 co-relation queries the response was YES. [2024-06-04 15:32:49,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4291 conditions, 641 events. 293/641 cut-off events. For 39103/39105 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3438 event pairs, 87 based on Foata normal form. 4/643 useless extension candidates. Maximal degree in co-relation 4212. Up to 523 conditions per place. [2024-06-04 15:32:49,730 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 87 selfloop transitions, 24 changer transitions 0/115 dead transitions. [2024-06-04 15:32:49,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 115 transitions, 1197 flow [2024-06-04 15:32:49,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:32:49,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:32:49,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-04 15:32:49,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-04 15:32:49,731 INFO L175 Difference]: Start difference. First operand has 185 places, 105 transitions, 931 flow. Second operand 10 states and 125 transitions. [2024-06-04 15:32:49,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 115 transitions, 1197 flow [2024-06-04 15:32:49,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 115 transitions, 1121 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-04 15:32:49,798 INFO L231 Difference]: Finished difference. Result has 181 places, 106 transitions, 935 flow [2024-06-04 15:32:49,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=855, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=935, PETRI_PLACES=181, PETRI_TRANSITIONS=106} [2024-06-04 15:32:49,798 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 150 predicate places. [2024-06-04 15:32:49,798 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 106 transitions, 935 flow [2024-06-04 15:32:49,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:49,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:49,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:49,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-04 15:32:49,799 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)] === [2024-06-04 15:32:49,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:49,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1153057155, now seen corresponding path program 13 times [2024-06-04 15:32:49,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:49,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164338430] [2024-06-04 15:32:49,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:49,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:49,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:51,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:51,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:51,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164338430] [2024-06-04 15:32:51,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164338430] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:51,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:51,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:32:51,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804196020] [2024-06-04 15:32:51,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:51,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:32:51,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:51,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:32:51,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:32:51,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:32:51,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 106 transitions, 935 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:51,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:51,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:32:51,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:51,829 INFO L124 PetriNetUnfolderBase]: 326/720 cut-off events. [2024-06-04 15:32:51,829 INFO L125 PetriNetUnfolderBase]: For 47251/47253 co-relation queries the response was YES. [2024-06-04 15:32:51,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4886 conditions, 720 events. 326/720 cut-off events. For 47251/47253 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4011 event pairs, 127 based on Foata normal form. 6/725 useless extension candidates. Maximal degree in co-relation 4808. Up to 548 conditions per place. [2024-06-04 15:32:51,835 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 94 selfloop transitions, 23 changer transitions 6/127 dead transitions. [2024-06-04 15:32:51,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 127 transitions, 1375 flow [2024-06-04 15:32:51,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:32:51,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:32:51,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 155 transitions. [2024-06-04 15:32:51,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4036458333333333 [2024-06-04 15:32:51,836 INFO L175 Difference]: Start difference. First operand has 181 places, 106 transitions, 935 flow. Second operand 12 states and 155 transitions. [2024-06-04 15:32:51,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 127 transitions, 1375 flow [2024-06-04 15:32:51,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 127 transitions, 1305 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-04 15:32:51,906 INFO L231 Difference]: Finished difference. Result has 185 places, 106 transitions, 911 flow [2024-06-04 15:32:51,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=865, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=911, PETRI_PLACES=185, PETRI_TRANSITIONS=106} [2024-06-04 15:32:51,906 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 154 predicate places. [2024-06-04 15:32:51,906 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 106 transitions, 911 flow [2024-06-04 15:32:51,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:51,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:51,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:51,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-04 15:32:51,907 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)] === [2024-06-04 15:32:51,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:51,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1998590779, now seen corresponding path program 30 times [2024-06-04 15:32:51,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:51,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096919558] [2024-06-04 15:32:51,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:51,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:51,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:52,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:52,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:52,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096919558] [2024-06-04 15:32:52,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096919558] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:52,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:52,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:32:52,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911352582] [2024-06-04 15:32:52,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:52,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:32:52,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:52,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:32:52,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:32:53,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:32:53,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 106 transitions, 911 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:53,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:53,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:32:53,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:53,392 INFO L124 PetriNetUnfolderBase]: 289/645 cut-off events. [2024-06-04 15:32:53,392 INFO L125 PetriNetUnfolderBase]: For 44774/44776 co-relation queries the response was YES. [2024-06-04 15:32:53,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3812 conditions, 645 events. 289/645 cut-off events. For 44774/44776 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3539 event pairs, 110 based on Foata normal form. 18/662 useless extension candidates. Maximal degree in co-relation 3733. Up to 487 conditions per place. [2024-06-04 15:32:53,396 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 87 selfloop transitions, 18 changer transitions 10/119 dead transitions. [2024-06-04 15:32:53,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 119 transitions, 1201 flow [2024-06-04 15:32:53,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:32:53,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:32:53,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-04 15:32:53,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-04 15:32:53,397 INFO L175 Difference]: Start difference. First operand has 185 places, 106 transitions, 911 flow. Second operand 10 states and 131 transitions. [2024-06-04 15:32:53,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 119 transitions, 1201 flow [2024-06-04 15:32:53,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 119 transitions, 1140 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-04 15:32:53,464 INFO L231 Difference]: Finished difference. Result has 183 places, 99 transitions, 836 flow [2024-06-04 15:32:53,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=850, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=836, PETRI_PLACES=183, PETRI_TRANSITIONS=99} [2024-06-04 15:32:53,465 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 152 predicate places. [2024-06-04 15:32:53,465 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 99 transitions, 836 flow [2024-06-04 15:32:53,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:53,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:53,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:53,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-04 15:32:53,465 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)] === [2024-06-04 15:32:53,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:53,466 INFO L85 PathProgramCache]: Analyzing trace with hash 2007754621, now seen corresponding path program 14 times [2024-06-04 15:32:53,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:53,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260085473] [2024-06-04 15:32:53,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:53,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:53,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:54,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:54,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:54,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260085473] [2024-06-04 15:32:54,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260085473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:54,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:54,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:32:54,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484282071] [2024-06-04 15:32:54,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:54,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:32:54,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:54,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:32:54,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:32:54,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:32:54,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 99 transitions, 836 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:54,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:54,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:32:54,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:55,395 INFO L124 PetriNetUnfolderBase]: 259/577 cut-off events. [2024-06-04 15:32:55,395 INFO L125 PetriNetUnfolderBase]: For 33735/33737 co-relation queries the response was YES. [2024-06-04 15:32:55,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3378 conditions, 577 events. 259/577 cut-off events. For 33735/33737 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3030 event pairs, 79 based on Foata normal form. 10/584 useless extension candidates. Maximal degree in co-relation 3301. Up to 447 conditions per place. [2024-06-04 15:32:55,399 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 80 selfloop transitions, 20 changer transitions 7/111 dead transitions. [2024-06-04 15:32:55,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 111 transitions, 1106 flow [2024-06-04 15:32:55,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:32:55,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:32:55,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-04 15:32:55,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-04 15:32:55,400 INFO L175 Difference]: Start difference. First operand has 183 places, 99 transitions, 836 flow. Second operand 11 states and 136 transitions. [2024-06-04 15:32:55,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 111 transitions, 1106 flow [2024-06-04 15:32:55,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 111 transitions, 1042 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-04 15:32:55,455 INFO L231 Difference]: Finished difference. Result has 179 places, 96 transitions, 795 flow [2024-06-04 15:32:55,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=772, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=795, PETRI_PLACES=179, PETRI_TRANSITIONS=96} [2024-06-04 15:32:55,456 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 148 predicate places. [2024-06-04 15:32:55,456 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 96 transitions, 795 flow [2024-06-04 15:32:55,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:55,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:55,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:55,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-04 15:32:55,456 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)] === [2024-06-04 15:32:55,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:55,457 INFO L85 PathProgramCache]: Analyzing trace with hash -810758565, now seen corresponding path program 15 times [2024-06-04 15:32:55,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:55,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608715433] [2024-06-04 15:32:55,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:55,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:55,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:56,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:56,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:56,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608715433] [2024-06-04 15:32:56,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608715433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:56,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:56,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:32:56,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317520835] [2024-06-04 15:32:56,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:56,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:32:56,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:56,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:32:56,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:32:56,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:32:56,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 96 transitions, 795 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:56,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:56,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:32:56,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:56,999 INFO L124 PetriNetUnfolderBase]: 265/605 cut-off events. [2024-06-04 15:32:56,999 INFO L125 PetriNetUnfolderBase]: For 37784/37786 co-relation queries the response was YES. [2024-06-04 15:32:57,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3675 conditions, 605 events. 265/605 cut-off events. For 37784/37786 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3199 event pairs, 112 based on Foata normal form. 6/610 useless extension candidates. Maximal degree in co-relation 3598. Up to 418 conditions per place. [2024-06-04 15:32:57,003 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 86 selfloop transitions, 14 changer transitions 10/114 dead transitions. [2024-06-04 15:32:57,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 114 transitions, 1173 flow [2024-06-04 15:32:57,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:32:57,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:32:57,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-04 15:32:57,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-04 15:32:57,004 INFO L175 Difference]: Start difference. First operand has 179 places, 96 transitions, 795 flow. Second operand 11 states and 144 transitions. [2024-06-04 15:32:57,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 114 transitions, 1173 flow [2024-06-04 15:32:57,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 114 transitions, 1123 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-04 15:32:57,079 INFO L231 Difference]: Finished difference. Result has 177 places, 92 transitions, 756 flow [2024-06-04 15:32:57,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=749, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=756, PETRI_PLACES=177, PETRI_TRANSITIONS=92} [2024-06-04 15:32:57,080 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 146 predicate places. [2024-06-04 15:32:57,080 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 92 transitions, 756 flow [2024-06-04 15:32:57,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:57,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:57,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:57,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-04 15:32:57,081 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)] === [2024-06-04 15:32:57,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:57,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1978923657, now seen corresponding path program 16 times [2024-06-04 15:32:57,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:57,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102398216] [2024-06-04 15:32:57,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:57,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:57,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:58,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:58,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:58,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102398216] [2024-06-04 15:32:58,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102398216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:58,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:58,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:32:58,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48729042] [2024-06-04 15:32:58,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:58,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:32:58,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:58,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:32:58,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:32:58,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:32:58,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 92 transitions, 756 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:58,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:58,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:32:58,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:58,911 INFO L124 PetriNetUnfolderBase]: 254/576 cut-off events. [2024-06-04 15:32:58,911 INFO L125 PetriNetUnfolderBase]: For 36693/36695 co-relation queries the response was YES. [2024-06-04 15:32:58,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3549 conditions, 576 events. 254/576 cut-off events. For 36693/36695 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2994 event pairs, 110 based on Foata normal form. 6/581 useless extension candidates. Maximal degree in co-relation 3473. Up to 418 conditions per place. [2024-06-04 15:32:58,932 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 84 selfloop transitions, 14 changer transitions 7/109 dead transitions. [2024-06-04 15:32:58,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 109 transitions, 1120 flow [2024-06-04 15:32:58,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:32:58,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:32:58,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-04 15:32:58,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-04 15:32:58,944 INFO L175 Difference]: Start difference. First operand has 177 places, 92 transitions, 756 flow. Second operand 11 states and 140 transitions. [2024-06-04 15:32:58,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 109 transitions, 1120 flow [2024-06-04 15:32:58,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 109 transitions, 1084 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-04 15:32:58,987 INFO L231 Difference]: Finished difference. Result has 173 places, 89 transitions, 736 flow [2024-06-04 15:32:58,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=726, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=736, PETRI_PLACES=173, PETRI_TRANSITIONS=89} [2024-06-04 15:32:58,987 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 142 predicate places. [2024-06-04 15:32:58,987 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 89 transitions, 736 flow [2024-06-04 15:32:58,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:32:58,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:58,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:58,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-04 15:32:58,988 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)] === [2024-06-04 15:32:58,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:58,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1998597723, now seen corresponding path program 17 times [2024-06-04 15:32:58,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:58,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185292539] [2024-06-04 15:32:58,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:58,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:59,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:33:00,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:33:00,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:33:00,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185292539] [2024-06-04 15:33:00,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185292539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:33:00,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:33:00,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:33:00,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608885421] [2024-06-04 15:33:00,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:33:00,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:33:00,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:33:00,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:33:00,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:33:00,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:33:00,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 89 transitions, 736 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:00,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:33:00,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:33:00,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:33:00,952 INFO L124 PetriNetUnfolderBase]: 244/554 cut-off events. [2024-06-04 15:33:00,952 INFO L125 PetriNetUnfolderBase]: For 33488/33490 co-relation queries the response was YES. [2024-06-04 15:33:00,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3289 conditions, 554 events. 244/554 cut-off events. For 33488/33490 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2825 event pairs, 115 based on Foata normal form. 8/561 useless extension candidates. Maximal degree in co-relation 3215. Up to 461 conditions per place. [2024-06-04 15:33:00,956 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 77 selfloop transitions, 12 changer transitions 9/102 dead transitions. [2024-06-04 15:33:00,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 102 transitions, 968 flow [2024-06-04 15:33:00,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:33:00,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:33:00,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-04 15:33:00,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-04 15:33:00,957 INFO L175 Difference]: Start difference. First operand has 173 places, 89 transitions, 736 flow. Second operand 11 states and 134 transitions. [2024-06-04 15:33:00,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 102 transitions, 968 flow [2024-06-04 15:33:01,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 102 transitions, 927 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-04 15:33:01,004 INFO L231 Difference]: Finished difference. Result has 170 places, 85 transitions, 680 flow [2024-06-04 15:33:01,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=697, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=680, PETRI_PLACES=170, PETRI_TRANSITIONS=85} [2024-06-04 15:33:01,004 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 139 predicate places. [2024-06-04 15:33:01,004 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 85 transitions, 680 flow [2024-06-04 15:33:01,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:01,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:33:01,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:33:01,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-04 15:33:01,005 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)] === [2024-06-04 15:33:01,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:33:01,005 INFO L85 PathProgramCache]: Analyzing trace with hash 433056889, now seen corresponding path program 31 times [2024-06-04 15:33:01,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:33:01,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118820197] [2024-06-04 15:33:01,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:33:01,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:33:01,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:33:02,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:33:02,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:33:02,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118820197] [2024-06-04 15:33:02,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118820197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:33:02,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:33:02,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:33:02,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586342114] [2024-06-04 15:33:02,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:33:02,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:33:02,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:33:02,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:33:02,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:33:02,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:33:02,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 85 transitions, 680 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:02,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:33:02,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:33:02,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:33:02,481 INFO L124 PetriNetUnfolderBase]: 231/525 cut-off events. [2024-06-04 15:33:02,481 INFO L125 PetriNetUnfolderBase]: For 26326/26328 co-relation queries the response was YES. [2024-06-04 15:33:02,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3101 conditions, 525 events. 231/525 cut-off events. For 26326/26328 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2617 event pairs, 85 based on Foata normal form. 4/526 useless extension candidates. Maximal degree in co-relation 3029. Up to 435 conditions per place. [2024-06-04 15:33:02,485 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 73 selfloop transitions, 18 changer transitions 0/95 dead transitions. [2024-06-04 15:33:02,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 95 transitions, 908 flow [2024-06-04 15:33:02,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:33:02,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:33:02,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-04 15:33:02,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 15:33:02,486 INFO L175 Difference]: Start difference. First operand has 170 places, 85 transitions, 680 flow. Second operand 10 states and 120 transitions. [2024-06-04 15:33:02,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 95 transitions, 908 flow [2024-06-04 15:33:02,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 95 transitions, 844 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-04 15:33:02,535 INFO L231 Difference]: Finished difference. Result has 165 places, 86 transitions, 686 flow [2024-06-04 15:33:02,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=618, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=686, PETRI_PLACES=165, PETRI_TRANSITIONS=86} [2024-06-04 15:33:02,535 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 134 predicate places. [2024-06-04 15:33:02,536 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 86 transitions, 686 flow [2024-06-04 15:33:02,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:02,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:33:02,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:33:02,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-04 15:33:02,537 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)] === [2024-06-04 15:33:02,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:33:02,537 INFO L85 PathProgramCache]: Analyzing trace with hash 119597883, now seen corresponding path program 32 times [2024-06-04 15:33:02,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:33:02,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577480414] [2024-06-04 15:33:02,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:33:02,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:33:02,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:33:03,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:33:03,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:33:03,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577480414] [2024-06-04 15:33:03,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577480414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:33:03,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:33:03,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:33:03,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987071118] [2024-06-04 15:33:03,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:33:03,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:33:03,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:33:03,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:33:03,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:33:03,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:33:03,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 86 transitions, 686 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:03,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:33:03,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:33:03,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:33:04,064 INFO L124 PetriNetUnfolderBase]: 236/540 cut-off events. [2024-06-04 15:33:04,065 INFO L125 PetriNetUnfolderBase]: For 27062/27062 co-relation queries the response was YES. [2024-06-04 15:33:04,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2931 conditions, 540 events. 236/540 cut-off events. For 27062/27062 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2723 event pairs, 82 based on Foata normal form. 8/546 useless extension candidates. Maximal degree in co-relation 2862. Up to 421 conditions per place. [2024-06-04 15:33:04,068 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 68 selfloop transitions, 14 changer transitions 12/98 dead transitions. [2024-06-04 15:33:04,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 98 transitions, 902 flow [2024-06-04 15:33:04,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:33:04,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:33:04,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-04 15:33:04,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-04 15:33:04,069 INFO L175 Difference]: Start difference. First operand has 165 places, 86 transitions, 686 flow. Second operand 10 states and 122 transitions. [2024-06-04 15:33:04,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 98 transitions, 902 flow [2024-06-04 15:33:04,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 98 transitions, 844 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-04 15:33:04,124 INFO L231 Difference]: Finished difference. Result has 167 places, 82 transitions, 616 flow [2024-06-04 15:33:04,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=616, PETRI_PLACES=167, PETRI_TRANSITIONS=82} [2024-06-04 15:33:04,125 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 136 predicate places. [2024-06-04 15:33:04,125 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 82 transitions, 616 flow [2024-06-04 15:33:04,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:04,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:33:04,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:33:04,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-04 15:33:04,126 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)] === [2024-06-04 15:33:04,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:33:04,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1155460114, now seen corresponding path program 1 times [2024-06-04 15:33:04,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:33:04,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035360431] [2024-06-04 15:33:04,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:33:04,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:33:04,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:33:05,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:33:05,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:33:05,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035360431] [2024-06-04 15:33:05,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035360431] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:33:05,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:33:05,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:33:05,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150475599] [2024-06-04 15:33:05,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:33:05,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:33:05,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:33:05,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:33:05,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:33:06,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:33:06,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 82 transitions, 616 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:06,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:33:06,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:33:06,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:33:06,337 INFO L124 PetriNetUnfolderBase]: 222/516 cut-off events. [2024-06-04 15:33:06,337 INFO L125 PetriNetUnfolderBase]: For 27078/27078 co-relation queries the response was YES. [2024-06-04 15:33:06,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2790 conditions, 516 events. 222/516 cut-off events. For 27078/27078 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2573 event pairs, 68 based on Foata normal form. 6/521 useless extension candidates. Maximal degree in co-relation 2720. Up to 397 conditions per place. [2024-06-04 15:33:06,340 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 71 selfloop transitions, 14 changer transitions 10/99 dead transitions. [2024-06-04 15:33:06,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 99 transitions, 848 flow [2024-06-04 15:33:06,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:33:06,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:33:06,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-04 15:33:06,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802083333333333 [2024-06-04 15:33:06,341 INFO L175 Difference]: Start difference. First operand has 167 places, 82 transitions, 616 flow. Second operand 12 states and 146 transitions. [2024-06-04 15:33:06,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 99 transitions, 848 flow [2024-06-04 15:33:06,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 99 transitions, 768 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-04 15:33:06,380 INFO L231 Difference]: Finished difference. Result has 162 places, 78 transitions, 536 flow [2024-06-04 15:33:06,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=536, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=536, PETRI_PLACES=162, PETRI_TRANSITIONS=78} [2024-06-04 15:33:06,380 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 131 predicate places. [2024-06-04 15:33:06,381 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 78 transitions, 536 flow [2024-06-04 15:33:06,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:06,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:33:06,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:33:06,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-04 15:33:06,381 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)] === [2024-06-04 15:33:06,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:33:06,381 INFO L85 PathProgramCache]: Analyzing trace with hash 713253136, now seen corresponding path program 2 times [2024-06-04 15:33:06,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:33:06,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177576785] [2024-06-04 15:33:06,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:33:06,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:33:06,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:33:07,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:33:07,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:33:07,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177576785] [2024-06-04 15:33:07,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177576785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:33:07,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:33:07,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:33:07,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884908215] [2024-06-04 15:33:07,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:33:07,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:33:07,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:33:07,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:33:07,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:33:07,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:33:07,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 78 transitions, 536 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:07,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:33:07,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:33:07,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:33:08,237 INFO L124 PetriNetUnfolderBase]: 196/460 cut-off events. [2024-06-04 15:33:08,237 INFO L125 PetriNetUnfolderBase]: For 19311/19313 co-relation queries the response was YES. [2024-06-04 15:33:08,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2248 conditions, 460 events. 196/460 cut-off events. For 19311/19313 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2215 event pairs, 64 based on Foata normal form. 8/467 useless extension candidates. Maximal degree in co-relation 2182. Up to 360 conditions per place. [2024-06-04 15:33:08,240 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 67 selfloop transitions, 10 changer transitions 13/94 dead transitions. [2024-06-04 15:33:08,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 94 transitions, 756 flow [2024-06-04 15:33:08,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:33:08,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:33:08,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-04 15:33:08,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3723958333333333 [2024-06-04 15:33:08,241 INFO L175 Difference]: Start difference. First operand has 162 places, 78 transitions, 536 flow. Second operand 12 states and 143 transitions. [2024-06-04 15:33:08,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 94 transitions, 756 flow [2024-06-04 15:33:08,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 94 transitions, 722 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 15:33:08,269 INFO L231 Difference]: Finished difference. Result has 158 places, 73 transitions, 484 flow [2024-06-04 15:33:08,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=484, PETRI_PLACES=158, PETRI_TRANSITIONS=73} [2024-06-04 15:33:08,269 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 127 predicate places. [2024-06-04 15:33:08,269 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 73 transitions, 484 flow [2024-06-04 15:33:08,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:08,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:33:08,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:33:08,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-04 15:33:08,270 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)] === [2024-06-04 15:33:08,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:33:08,270 INFO L85 PathProgramCache]: Analyzing trace with hash 120841354, now seen corresponding path program 3 times [2024-06-04 15:33:08,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:33:08,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289001256] [2024-06-04 15:33:08,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:33:08,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:33:08,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:33:09,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:33:09,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:33:09,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289001256] [2024-06-04 15:33:09,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289001256] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:33:09,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:33:09,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:33:09,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156156593] [2024-06-04 15:33:09,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:33:09,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:33:09,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:33:09,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:33:09,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:33:09,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:33:09,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 73 transitions, 484 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:09,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:33:09,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:33:09,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:33:09,922 INFO L124 PetriNetUnfolderBase]: 187/439 cut-off events. [2024-06-04 15:33:09,922 INFO L125 PetriNetUnfolderBase]: For 19267/19269 co-relation queries the response was YES. [2024-06-04 15:33:09,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2151 conditions, 439 events. 187/439 cut-off events. For 19267/19269 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2071 event pairs, 62 based on Foata normal form. 8/446 useless extension candidates. Maximal degree in co-relation 2086. Up to 342 conditions per place. [2024-06-04 15:33:09,925 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 59 selfloop transitions, 5 changer transitions 22/90 dead transitions. [2024-06-04 15:33:09,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 90 transitions, 698 flow [2024-06-04 15:33:09,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:33:09,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:33:09,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-04 15:33:09,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3697916666666667 [2024-06-04 15:33:09,933 INFO L175 Difference]: Start difference. First operand has 158 places, 73 transitions, 484 flow. Second operand 12 states and 142 transitions. [2024-06-04 15:33:09,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 90 transitions, 698 flow [2024-06-04 15:33:09,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 90 transitions, 662 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-04 15:33:09,960 INFO L231 Difference]: Finished difference. Result has 150 places, 65 transitions, 394 flow [2024-06-04 15:33:09,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=394, PETRI_PLACES=150, PETRI_TRANSITIONS=65} [2024-06-04 15:33:09,961 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 119 predicate places. [2024-06-04 15:33:09,961 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 65 transitions, 394 flow [2024-06-04 15:33:09,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:09,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:33:09,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:33:09,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-04 15:33:09,963 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)] === [2024-06-04 15:33:09,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:33:09,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1197221964, now seen corresponding path program 4 times [2024-06-04 15:33:09,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:33:09,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337623299] [2024-06-04 15:33:09,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:33:09,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:33:09,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:33:11,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:33:11,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:33:11,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337623299] [2024-06-04 15:33:11,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337623299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:33:11,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:33:11,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:33:11,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020360169] [2024-06-04 15:33:11,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:33:11,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:33:11,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:33:11,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:33:11,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:33:11,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:33:11,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 65 transitions, 394 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:11,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:33:11,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:33:11,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:33:11,791 INFO L124 PetriNetUnfolderBase]: 158/368 cut-off events. [2024-06-04 15:33:11,791 INFO L125 PetriNetUnfolderBase]: For 15341/15343 co-relation queries the response was YES. [2024-06-04 15:33:11,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1698 conditions, 368 events. 158/368 cut-off events. For 15341/15343 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1647 event pairs, 49 based on Foata normal form. 8/375 useless extension candidates. Maximal degree in co-relation 1635. Up to 278 conditions per place. [2024-06-04 15:33:11,793 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 53 selfloop transitions, 9 changer transitions 12/78 dead transitions. [2024-06-04 15:33:11,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 78 transitions, 574 flow [2024-06-04 15:33:11,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:33:11,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:33:11,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-04 15:33:11,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-04 15:33:11,794 INFO L175 Difference]: Start difference. First operand has 150 places, 65 transitions, 394 flow. Second operand 11 states and 131 transitions. [2024-06-04 15:33:11,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 78 transitions, 574 flow [2024-06-04 15:33:11,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 78 transitions, 530 flow, removed 8 selfloop flow, removed 15 redundant places. [2024-06-04 15:33:11,818 INFO L231 Difference]: Finished difference. Result has 133 places, 61 transitions, 348 flow [2024-06-04 15:33:11,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=348, PETRI_PLACES=133, PETRI_TRANSITIONS=61} [2024-06-04 15:33:11,819 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 102 predicate places. [2024-06-04 15:33:11,819 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 61 transitions, 348 flow [2024-06-04 15:33:11,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:11,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:33:11,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:33:11,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-04 15:33:11,819 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)] === [2024-06-04 15:33:11,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:33:11,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1712573918, now seen corresponding path program 5 times [2024-06-04 15:33:11,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:33:11,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528229450] [2024-06-04 15:33:11,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:33:11,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:33:11,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:33:13,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:33:13,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:33:13,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528229450] [2024-06-04 15:33:13,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528229450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:33:13,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:33:13,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:33:13,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695595361] [2024-06-04 15:33:13,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:33:13,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:33:13,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:33:13,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:33:13,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:33:13,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:33:13,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 61 transitions, 348 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:13,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:33:13,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:33:13,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:33:14,257 INFO L124 PetriNetUnfolderBase]: 150/350 cut-off events. [2024-06-04 15:33:14,257 INFO L125 PetriNetUnfolderBase]: For 15259/15259 co-relation queries the response was YES. [2024-06-04 15:33:14,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1614 conditions, 350 events. 150/350 cut-off events. For 15259/15259 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1532 event pairs, 47 based on Foata normal form. 6/355 useless extension candidates. Maximal degree in co-relation 1557. Up to 260 conditions per place. [2024-06-04 15:33:14,259 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 50 selfloop transitions, 7 changer transitions 14/75 dead transitions. [2024-06-04 15:33:14,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 75 transitions, 524 flow [2024-06-04 15:33:14,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:33:14,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:33:14,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-04 15:33:14,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-04 15:33:14,260 INFO L175 Difference]: Start difference. First operand has 133 places, 61 transitions, 348 flow. Second operand 11 states and 131 transitions. [2024-06-04 15:33:14,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 75 transitions, 524 flow [2024-06-04 15:33:14,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 75 transitions, 492 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-04 15:33:14,274 INFO L231 Difference]: Finished difference. Result has 125 places, 56 transitions, 311 flow [2024-06-04 15:33:14,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=311, PETRI_PLACES=125, PETRI_TRANSITIONS=56} [2024-06-04 15:33:14,274 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 94 predicate places. [2024-06-04 15:33:14,275 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 56 transitions, 311 flow [2024-06-04 15:33:14,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:14,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:33:14,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:33:14,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-04 15:33:14,275 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)] === [2024-06-04 15:33:14,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:33:14,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1496942928, now seen corresponding path program 6 times [2024-06-04 15:33:14,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:33:14,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949958344] [2024-06-04 15:33:14,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:33:14,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:33:14,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:33:15,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:33:15,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:33:15,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949958344] [2024-06-04 15:33:15,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949958344] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:33:15,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:33:15,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:33:15,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788734284] [2024-06-04 15:33:15,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:33:15,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:33:15,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:33:15,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:33:15,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:33:15,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:33:15,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 56 transitions, 311 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:15,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:33:15,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:33:15,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:33:16,099 INFO L124 PetriNetUnfolderBase]: 138/324 cut-off events. [2024-06-04 15:33:16,099 INFO L125 PetriNetUnfolderBase]: For 13049/13051 co-relation queries the response was YES. [2024-06-04 15:33:16,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1460 conditions, 324 events. 138/324 cut-off events. For 13049/13051 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1374 event pairs, 45 based on Foata normal form. 8/331 useless extension candidates. Maximal degree in co-relation 1407. Up to 242 conditions per place. [2024-06-04 15:33:16,101 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 43 selfloop transitions, 3 changer transitions 20/70 dead transitions. [2024-06-04 15:33:16,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 70 transitions, 475 flow [2024-06-04 15:33:16,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:33:16,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:33:16,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-04 15:33:16,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-04 15:33:16,102 INFO L175 Difference]: Start difference. First operand has 125 places, 56 transitions, 311 flow. Second operand 11 states and 129 transitions. [2024-06-04 15:33:16,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 70 transitions, 475 flow [2024-06-04 15:33:16,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 70 transitions, 451 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-04 15:33:16,113 INFO L231 Difference]: Finished difference. Result has 118 places, 49 transitions, 263 flow [2024-06-04 15:33:16,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=263, PETRI_PLACES=118, PETRI_TRANSITIONS=49} [2024-06-04 15:33:16,113 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 87 predicate places. [2024-06-04 15:33:16,113 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 49 transitions, 263 flow [2024-06-04 15:33:16,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:16,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:33:16,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:33:16,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-04 15:33:16,114 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:33:16,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:33:16,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1698758748, now seen corresponding path program 7 times [2024-06-04 15:33:16,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:33:16,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84036237] [2024-06-04 15:33:16,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:33:16,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:33:16,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:33:18,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:33:18,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:33:18,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84036237] [2024-06-04 15:33:18,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84036237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:33:18,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:33:18,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:33:18,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835383549] [2024-06-04 15:33:18,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:33:18,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:33:18,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:33:18,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:33:18,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:33:18,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:33:18,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 49 transitions, 263 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:18,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:33:18,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:33:18,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:33:18,683 INFO L124 PetriNetUnfolderBase]: 108/254 cut-off events. [2024-06-04 15:33:18,683 INFO L125 PetriNetUnfolderBase]: For 8092/8094 co-relation queries the response was YES. [2024-06-04 15:33:18,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1045 conditions, 254 events. 108/254 cut-off events. For 8092/8094 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 980 event pairs, 32 based on Foata normal form. 8/261 useless extension candidates. Maximal degree in co-relation 995. Up to 178 conditions per place. [2024-06-04 15:33:18,685 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 37 selfloop transitions, 10 changer transitions 10/61 dead transitions. [2024-06-04 15:33:18,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 61 transitions, 403 flow [2024-06-04 15:33:18,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:33:18,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:33:18,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-04 15:33:18,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-04 15:33:18,686 INFO L175 Difference]: Start difference. First operand has 118 places, 49 transitions, 263 flow. Second operand 11 states and 129 transitions. [2024-06-04 15:33:18,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 61 transitions, 403 flow [2024-06-04 15:33:18,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 61 transitions, 383 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-04 15:33:18,692 INFO L231 Difference]: Finished difference. Result has 106 places, 46 transitions, 251 flow [2024-06-04 15:33:18,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=251, PETRI_PLACES=106, PETRI_TRANSITIONS=46} [2024-06-04 15:33:18,693 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 75 predicate places. [2024-06-04 15:33:18,693 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 46 transitions, 251 flow [2024-06-04 15:33:18,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:18,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:33:18,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:33:18,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-04 15:33:18,694 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:33:18,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:33:18,694 INFO L85 PathProgramCache]: Analyzing trace with hash 2105130094, now seen corresponding path program 8 times [2024-06-04 15:33:18,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:33:18,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394035038] [2024-06-04 15:33:18,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:33:18,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:33:18,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:33:20,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:33:20,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:33:20,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394035038] [2024-06-04 15:33:20,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394035038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:33:20,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:33:20,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:33:20,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634077017] [2024-06-04 15:33:20,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:33:20,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:33:20,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:33:20,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:33:20,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:33:20,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:33:20,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 46 transitions, 251 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:20,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:33:20,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:33:20,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:33:20,742 INFO L124 PetriNetUnfolderBase]: 101/241 cut-off events. [2024-06-04 15:33:20,742 INFO L125 PetriNetUnfolderBase]: For 5622/5622 co-relation queries the response was YES. [2024-06-04 15:33:20,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 955 conditions, 241 events. 101/241 cut-off events. For 5622/5622 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 914 event pairs, 30 based on Foata normal form. 6/246 useless extension candidates. Maximal degree in co-relation 910. Up to 160 conditions per place. [2024-06-04 15:33:20,743 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 34 selfloop transitions, 7 changer transitions 14/59 dead transitions. [2024-06-04 15:33:20,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 59 transitions, 389 flow [2024-06-04 15:33:20,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:33:20,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:33:20,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-04 15:33:20,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-04 15:33:20,764 INFO L175 Difference]: Start difference. First operand has 106 places, 46 transitions, 251 flow. Second operand 11 states and 129 transitions. [2024-06-04 15:33:20,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 59 transitions, 389 flow [2024-06-04 15:33:20,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 59 transitions, 363 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-04 15:33:20,770 INFO L231 Difference]: Finished difference. Result has 101 places, 41 transitions, 218 flow [2024-06-04 15:33:20,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=218, PETRI_PLACES=101, PETRI_TRANSITIONS=41} [2024-06-04 15:33:20,771 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 70 predicate places. [2024-06-04 15:33:20,771 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 41 transitions, 218 flow [2024-06-04 15:33:20,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:20,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:33:20,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:33:20,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-04 15:33:20,771 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:33:20,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:33:20,772 INFO L85 PathProgramCache]: Analyzing trace with hash -583857222, now seen corresponding path program 9 times [2024-06-04 15:33:20,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:33:20,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044825604] [2024-06-04 15:33:20,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:33:20,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:33:20,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:33:22,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:33:22,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:33:22,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044825604] [2024-06-04 15:33:22,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044825604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:33:22,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:33:22,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:33:22,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754820052] [2024-06-04 15:33:22,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:33:22,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:33:22,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:33:22,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:33:22,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:33:22,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:33:22,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 41 transitions, 218 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:22,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:33:22,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:33:22,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:33:22,669 INFO L124 PetriNetUnfolderBase]: 89/215 cut-off events. [2024-06-04 15:33:22,669 INFO L125 PetriNetUnfolderBase]: For 4748/4748 co-relation queries the response was YES. [2024-06-04 15:33:22,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 855 conditions, 215 events. 89/215 cut-off events. For 4748/4748 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 768 event pairs, 28 based on Foata normal form. 6/220 useless extension candidates. Maximal degree in co-relation 812. Up to 142 conditions per place. [2024-06-04 15:33:22,670 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 29 selfloop transitions, 4 changer transitions 17/54 dead transitions. [2024-06-04 15:33:22,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 54 transitions, 346 flow [2024-06-04 15:33:22,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:33:22,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:33:22,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-04 15:33:22,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-04 15:33:22,672 INFO L175 Difference]: Start difference. First operand has 101 places, 41 transitions, 218 flow. Second operand 11 states and 127 transitions. [2024-06-04 15:33:22,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 54 transitions, 346 flow [2024-06-04 15:33:22,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 54 transitions, 322 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-04 15:33:22,676 INFO L231 Difference]: Finished difference. Result has 94 places, 35 transitions, 177 flow [2024-06-04 15:33:22,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=177, PETRI_PLACES=94, PETRI_TRANSITIONS=35} [2024-06-04 15:33:22,677 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 63 predicate places. [2024-06-04 15:33:22,677 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 35 transitions, 177 flow [2024-06-04 15:33:22,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:22,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:33:22,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:33:22,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-04 15:33:22,677 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:33:22,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:33:22,678 INFO L85 PathProgramCache]: Analyzing trace with hash -327738574, now seen corresponding path program 10 times [2024-06-04 15:33:22,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:33:22,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109657744] [2024-06-04 15:33:22,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:33:22,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:33:22,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:33:24,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:33:24,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:33:24,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109657744] [2024-06-04 15:33:24,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109657744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:33:24,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:33:24,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:33:24,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644695341] [2024-06-04 15:33:24,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:33:24,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:33:24,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:33:24,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:33:24,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:33:24,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:33:24,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 35 transitions, 177 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:24,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:33:24,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:33:24,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:33:25,031 INFO L124 PetriNetUnfolderBase]: 76/184 cut-off events. [2024-06-04 15:33:25,031 INFO L125 PetriNetUnfolderBase]: For 3590/3594 co-relation queries the response was YES. [2024-06-04 15:33:25,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 730 conditions, 184 events. 76/184 cut-off events. For 3590/3594 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 612 event pairs, 28 based on Foata normal form. 10/193 useless extension candidates. Maximal degree in co-relation 690. Up to 105 conditions per place. [2024-06-04 15:33:25,032 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 22 selfloop transitions, 10 changer transitions 11/47 dead transitions. [2024-06-04 15:33:25,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 47 transitions, 289 flow [2024-06-04 15:33:25,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:33:25,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:33:25,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-04 15:33:25,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-04 15:33:25,033 INFO L175 Difference]: Start difference. First operand has 94 places, 35 transitions, 177 flow. Second operand 11 states and 126 transitions. [2024-06-04 15:33:25,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 47 transitions, 289 flow [2024-06-04 15:33:25,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 47 transitions, 271 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-04 15:33:25,036 INFO L231 Difference]: Finished difference. Result has 85 places, 31 transitions, 162 flow [2024-06-04 15:33:25,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=162, PETRI_PLACES=85, PETRI_TRANSITIONS=31} [2024-06-04 15:33:25,036 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 54 predicate places. [2024-06-04 15:33:25,036 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 31 transitions, 162 flow [2024-06-04 15:33:25,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:25,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:33:25,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:33:25,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-04 15:33:25,037 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:33:25,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:33:25,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1091888750, now seen corresponding path program 11 times [2024-06-04 15:33:25,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:33:25,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608908264] [2024-06-04 15:33:25,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:33:25,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:33:25,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:33:28,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:33:28,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:33:28,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608908264] [2024-06-04 15:33:28,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608908264] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:33:28,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:33:28,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:33:28,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238675726] [2024-06-04 15:33:28,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:33:28,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:33:28,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:33:28,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:33:28,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:33:28,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:33:28,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 31 transitions, 162 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:28,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:33:28,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:33:28,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:33:29,231 INFO L124 PetriNetUnfolderBase]: 68/166 cut-off events. [2024-06-04 15:33:29,232 INFO L125 PetriNetUnfolderBase]: For 2322/2326 co-relation queries the response was YES. [2024-06-04 15:33:29,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 642 conditions, 166 events. 68/166 cut-off events. For 2322/2326 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 521 event pairs, 28 based on Foata normal form. 10/175 useless extension candidates. Maximal degree in co-relation 606. Up to 95 conditions per place. [2024-06-04 15:33:29,233 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 19 selfloop transitions, 10 changer transitions 10/43 dead transitions. [2024-06-04 15:33:29,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 43 transitions, 266 flow [2024-06-04 15:33:29,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:33:29,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:33:29,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-04 15:33:29,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-04 15:33:29,234 INFO L175 Difference]: Start difference. First operand has 85 places, 31 transitions, 162 flow. Second operand 11 states and 124 transitions. [2024-06-04 15:33:29,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 43 transitions, 266 flow [2024-06-04 15:33:29,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 43 transitions, 238 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-04 15:33:29,237 INFO L231 Difference]: Finished difference. Result has 79 places, 28 transitions, 143 flow [2024-06-04 15:33:29,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=143, PETRI_PLACES=79, PETRI_TRANSITIONS=28} [2024-06-04 15:33:29,249 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 48 predicate places. [2024-06-04 15:33:29,249 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 28 transitions, 143 flow [2024-06-04 15:33:29,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:29,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:33:29,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:33:29,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-04 15:33:29,250 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:33:29,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:33:29,250 INFO L85 PathProgramCache]: Analyzing trace with hash 753116892, now seen corresponding path program 12 times [2024-06-04 15:33:29,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:33:29,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654818406] [2024-06-04 15:33:29,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:33:29,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:33:29,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:33:31,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:33:31,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:33:31,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654818406] [2024-06-04 15:33:31,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654818406] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:33:31,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:33:31,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:33:31,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969420645] [2024-06-04 15:33:31,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:33:31,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:33:31,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:33:31,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:33:31,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:33:31,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:33:31,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 28 transitions, 143 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:31,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:33:31,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:33:31,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:33:31,418 INFO L124 PetriNetUnfolderBase]: 46/120 cut-off events. [2024-06-04 15:33:31,418 INFO L125 PetriNetUnfolderBase]: For 1052/1052 co-relation queries the response was YES. [2024-06-04 15:33:31,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 417 conditions, 120 events. 46/120 cut-off events. For 1052/1052 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 306 event pairs, 4 based on Foata normal form. 6/125 useless extension candidates. Maximal degree in co-relation 384. Up to 38 conditions per place. [2024-06-04 15:33:31,419 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 18 selfloop transitions, 8 changer transitions 11/41 dead transitions. [2024-06-04 15:33:31,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 41 transitions, 245 flow [2024-06-04 15:33:31,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:33:31,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:33:31,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-04 15:33:31,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-04 15:33:31,420 INFO L175 Difference]: Start difference. First operand has 79 places, 28 transitions, 143 flow. Second operand 11 states and 123 transitions. [2024-06-04 15:33:31,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 41 transitions, 245 flow [2024-06-04 15:33:31,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 41 transitions, 219 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-04 15:33:31,421 INFO L231 Difference]: Finished difference. Result has 75 places, 23 transitions, 110 flow [2024-06-04 15:33:31,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=110, PETRI_PLACES=75, PETRI_TRANSITIONS=23} [2024-06-04 15:33:31,421 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 44 predicate places. [2024-06-04 15:33:31,422 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 23 transitions, 110 flow [2024-06-04 15:33:31,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:31,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:33:31,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:33:31,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-04 15:33:31,422 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:33:31,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:33:31,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1826772786, now seen corresponding path program 13 times [2024-06-04 15:33:31,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:33:31,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073818695] [2024-06-04 15:33:31,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:33:31,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:33:31,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:33:33,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:33:33,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:33:33,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073818695] [2024-06-04 15:33:33,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073818695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:33:33,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:33:33,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:33:33,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094762935] [2024-06-04 15:33:33,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:33:33,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:33:33,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:33:33,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:33:33,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:33:33,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:33:33,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 23 transitions, 110 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:33,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:33:33,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:33:33,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:33:33,457 INFO L124 PetriNetUnfolderBase]: 19/59 cut-off events. [2024-06-04 15:33:33,457 INFO L125 PetriNetUnfolderBase]: For 390/390 co-relation queries the response was YES. [2024-06-04 15:33:33,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 59 events. 19/59 cut-off events. For 390/390 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 73 event pairs, 0 based on Foata normal form. 6/64 useless extension candidates. Maximal degree in co-relation 160. Up to 24 conditions per place. [2024-06-04 15:33:33,457 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 0 selfloop transitions, 0 changer transitions 30/30 dead transitions. [2024-06-04 15:33:33,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 30 transitions, 154 flow [2024-06-04 15:33:33,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:33:33,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:33:33,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-04 15:33:33,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32670454545454547 [2024-06-04 15:33:33,458 INFO L175 Difference]: Start difference. First operand has 75 places, 23 transitions, 110 flow. Second operand 11 states and 115 transitions. [2024-06-04 15:33:33,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 30 transitions, 154 flow [2024-06-04 15:33:33,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 30 transitions, 120 flow, removed 1 selfloop flow, removed 16 redundant places. [2024-06-04 15:33:33,459 INFO L231 Difference]: Finished difference. Result has 62 places, 0 transitions, 0 flow [2024-06-04 15:33:33,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=62, PETRI_TRANSITIONS=0} [2024-06-04 15:33:33,459 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 31 predicate places. [2024-06-04 15:33:33,459 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 0 transitions, 0 flow [2024-06-04 15:33:33,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:33:33,461 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-04 15:33:33,462 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-04 15:33:33,472 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-04 15:33:33,472 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-04 15:33:33,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-04 15:33:33,472 INFO L445 BasicCegarLoop]: Path program histogram: [32, 20, 17, 13, 10, 10, 7, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:33:33,475 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-04 15:33:33,475 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-04 15:33:33,477 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-04 15:33:33,478 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-04 15:33:33,478 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.06 03:33:33 BasicIcfg [2024-06-04 15:33:33,478 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-04 15:33:33,479 INFO L158 Benchmark]: Toolchain (without parser) took 221136.71ms. Allocated memory was 178.3MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 92.5MB in the beginning and 1.0GB in the end (delta: -920.4MB). Peak memory consumption was 107.9MB. Max. memory is 16.1GB. [2024-06-04 15:33:33,479 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 178.3MB. Free memory is still 146.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 15:33:33,479 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 178.3MB. Free memory is still 141.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 15:33:33,479 INFO L158 Benchmark]: CACSL2BoogieTranslator took 579.46ms. Allocated memory is still 178.3MB. Free memory was 92.2MB in the beginning and 121.5MB in the end (delta: -29.3MB). Peak memory consumption was 16.0MB. Max. memory is 16.1GB. [2024-06-04 15:33:33,479 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.75ms. Allocated memory is still 178.3MB. Free memory was 121.5MB in the beginning and 118.6MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-04 15:33:33,479 INFO L158 Benchmark]: Boogie Preprocessor took 35.77ms. Allocated memory is still 178.3MB. Free memory was 118.6MB in the beginning and 114.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-04 15:33:33,479 INFO L158 Benchmark]: RCFGBuilder took 658.02ms. Allocated memory is still 178.3MB. Free memory was 114.4MB in the beginning and 92.3MB in the end (delta: 22.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-06-04 15:33:33,480 INFO L158 Benchmark]: TraceAbstraction took 219818.93ms. Allocated memory was 178.3MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 92.0MB in the beginning and 1.0GB in the end (delta: -920.9MB). Peak memory consumption was 107.8MB. Max. memory is 16.1GB. [2024-06-04 15:33:33,480 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.15ms. Allocated memory is still 178.3MB. Free memory is still 146.9MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.12ms. Allocated memory is still 178.3MB. Free memory is still 141.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 579.46ms. Allocated memory is still 178.3MB. Free memory was 92.2MB in the beginning and 121.5MB in the end (delta: -29.3MB). Peak memory consumption was 16.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.75ms. Allocated memory is still 178.3MB. Free memory was 121.5MB in the beginning and 118.6MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.77ms. Allocated memory is still 178.3MB. Free memory was 118.6MB in the beginning and 114.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 658.02ms. Allocated memory is still 178.3MB. Free memory was 114.4MB in the beginning and 92.3MB in the end (delta: 22.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 219818.93ms. Allocated memory was 178.3MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 92.0MB in the beginning and 1.0GB in the end (delta: -920.9MB). Peak memory consumption was 107.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 826]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 827]: 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, 51 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: 219.7s, OverallIterations: 138, TraceHistogramMax: 1, PathProgramHistogramMax: 32, EmptinessCheckTime: 0.0s, AutomataDifference: 62.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7932 SdHoareTripleChecker+Valid, 32.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6764 mSDsluCounter, 2430 SdHoareTripleChecker+Invalid, 28.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2170 mSDsCounter, 1218 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 55783 IncrementalHoareTripleChecker+Invalid, 57001 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1218 mSolverCounterUnsat, 260 mSDtfsCounter, 55783 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1483 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1477 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2644 ImplicationChecksByTransitivity, 41.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2101occurred in iteration=65, InterpolantAutomatonStates: 1341, 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: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 155.0s InterpolantComputationTime, 2437 NumberOfCodeBlocks, 2437 NumberOfCodeBlocksAsserted, 138 NumberOfCheckSat, 2299 ConstructedInterpolants, 0 QuantifiedInterpolants, 108233 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 138 InterpolantComputations, 138 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! [2024-06-04 15:33:33,526 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE