./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/chl-name-comparator-subst.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 80b1b132 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/weaver/chl-name-comparator-subst.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/chl-name-comparator-subst.wvr.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 --- Real Ultimate output --- This is Ultimate 0.2.4-?-80b1b13-m [2024-01-31 16:48:32,542 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 16:48:32,624 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 16:48:32,631 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 16:48:32,631 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 16:48:32,657 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 16:48:32,658 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 16:48:32,658 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 16:48:32,659 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 16:48:32,663 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 16:48:32,663 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 16:48:32,663 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 16:48:32,664 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 16:48:32,665 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 16:48:32,666 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 16:48:32,666 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 16:48:32,666 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 16:48:32,667 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 16:48:32,667 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 16:48:32,667 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 16:48:32,667 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 16:48:32,668 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 16:48:32,668 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 16:48:32,668 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 16:48:32,668 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 16:48:32,669 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 16:48:32,669 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 16:48:32,669 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 16:48:32,670 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 16:48:32,670 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 16:48:32,671 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 16:48:32,671 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 16:48:32,671 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:48:32,671 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 16:48:32,672 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 16:48:32,672 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 16:48:32,672 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 16:48:32,672 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 16:48:32,672 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 16:48:32,673 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 16:48:32,673 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 16:48:32,673 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 16:48:32,673 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 16:48:32,674 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 16:48:32,987 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 16:48:33,014 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 16:48:33,016 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 16:48:33,017 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 16:48:33,018 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 16:48:33,019 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c [2024-01-31 16:48:34,170 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 16:48:34,417 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 16:48:34,418 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c [2024-01-31 16:48:34,431 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/007ba00ea/c9aaa21fac4d4bd0b236ff8797b52b99/FLAG199f4b59d [2024-01-31 16:48:34,447 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/007ba00ea/c9aaa21fac4d4bd0b236ff8797b52b99 [2024-01-31 16:48:34,450 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 16:48:34,450 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 16:48:34,451 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/chl-name-comparator-subst.wvr.yml/witness.yml [2024-01-31 16:48:34,622 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 16:48:34,623 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 16:48:34,624 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 16:48:34,625 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 16:48:34,629 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 16:48:34,630 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:48:34" (1/2) ... [2024-01-31 16:48:34,632 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44305f70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:48:34, skipping insertion in model container [2024-01-31 16:48:34,632 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:48:34" (1/2) ... [2024-01-31 16:48:34,634 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3e76caa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:48:34, skipping insertion in model container [2024-01-31 16:48:34,634 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:48:34" (2/2) ... [2024-01-31 16:48:34,635 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44305f70 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:48:34, skipping insertion in model container [2024-01-31 16:48:34,635 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:48:34" (2/2) ... [2024-01-31 16:48:34,635 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 16:48:34,714 INFO L93 nessWitnessExtractor]: Witness did not contain any usable entries. [2024-01-31 16:48:34,752 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 16:48:34,922 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c[4875,4888] [2024-01-31 16:48:34,940 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:48:34,948 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 16:48:34,997 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c[4875,4888] [2024-01-31 16:48:35,001 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:48:35,016 INFO L208 MainTranslator]: Completed translation [2024-01-31 16:48:35,017 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:48:35 WrapperNode [2024-01-31 16:48:35,017 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 16:48:35,018 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 16:48:35,018 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 16:48:35,019 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 16:48:35,025 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:48:35" (1/1) ... [2024-01-31 16:48:35,034 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:48:35" (1/1) ... [2024-01-31 16:48:35,064 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 319 [2024-01-31 16:48:35,064 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 16:48:35,065 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 16:48:35,065 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 16:48:35,065 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 16:48:35,075 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:48:35" (1/1) ... [2024-01-31 16:48:35,075 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:48:35" (1/1) ... [2024-01-31 16:48:35,079 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:48:35" (1/1) ... [2024-01-31 16:48:35,094 INFO L175 MemorySlicer]: Split 12 memory accesses to 5 slices as follows [2, 2, 4, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-01-31 16:48:35,094 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:48:35" (1/1) ... [2024-01-31 16:48:35,094 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:48:35" (1/1) ... [2024-01-31 16:48:35,103 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:48:35" (1/1) ... [2024-01-31 16:48:35,106 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:48:35" (1/1) ... [2024-01-31 16:48:35,108 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:48:35" (1/1) ... [2024-01-31 16:48:35,109 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:48:35" (1/1) ... [2024-01-31 16:48:35,113 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 16:48:35,114 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 16:48:35,114 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 16:48:35,114 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 16:48:35,115 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:48:35" (1/1) ... [2024-01-31 16:48:35,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:48:35,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:48:35,158 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) [2024-01-31 16:48:35,178 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 [2024-01-31 16:48:35,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 16:48:35,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 16:48:35,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 16:48:35,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 16:48:35,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 16:48:35,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 16:48:35,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-31 16:48:35,240 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-31 16:48:35,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-31 16:48:35,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-31 16:48:35,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-31 16:48:35,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-31 16:48:35,241 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-31 16:48:35,242 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-31 16:48:35,242 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-31 16:48:35,242 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-31 16:48:35,242 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-31 16:48:35,243 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-31 16:48:35,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 16:48:35,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 16:48:35,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 16:48:35,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 16:48:35,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-31 16:48:35,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-01-31 16:48:35,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 16:48:35,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 16:48:35,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 16:48:35,250 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 16:48:35,373 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 16:48:35,375 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 16:48:35,799 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 16:48:35,802 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 16:48:36,235 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 16:48:36,237 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-01-31 16:48:36,238 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:48:36 BoogieIcfgContainer [2024-01-31 16:48:36,238 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 16:48:36,240 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 16:48:36,240 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 16:48:36,243 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 16:48:36,244 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:48:34" (1/4) ... [2024-01-31 16:48:36,245 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f218dce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:48:36, skipping insertion in model container [2024-01-31 16:48:36,245 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:48:34" (2/4) ... [2024-01-31 16:48:36,245 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f218dce and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:48:36, skipping insertion in model container [2024-01-31 16:48:36,245 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:48:35" (3/4) ... [2024-01-31 16:48:36,246 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f218dce and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:48:36, skipping insertion in model container [2024-01-31 16:48:36,246 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:48:36" (4/4) ... [2024-01-31 16:48:36,248 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-subst.wvr.c [2024-01-31 16:48:36,265 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 16:48:36,265 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-31 16:48:36,265 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 16:48:36,326 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-01-31 16:48:36,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 38 transitions, 97 flow [2024-01-31 16:48:36,407 INFO L124 PetriNetUnfolderBase]: 7/35 cut-off events. [2024-01-31 16:48:36,408 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-31 16:48:36,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 35 events. 7/35 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 30 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-01-31 16:48:36,414 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 38 transitions, 97 flow [2024-01-31 16:48:36,417 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 34 transitions, 86 flow [2024-01-31 16:48:36,431 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:48:36,440 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;@3ab94b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:48:36,441 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-01-31 16:48:36,457 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:48:36,457 INFO L124 PetriNetUnfolderBase]: 7/33 cut-off events. [2024-01-31 16:48:36,457 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-31 16:48:36,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:48:36,458 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, 1, 1, 1, 1] [2024-01-31 16:48:36,459 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:48:36,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:48:36,463 INFO L85 PathProgramCache]: Analyzing trace with hash 566723653, now seen corresponding path program 1 times [2024-01-31 16:48:36,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:48:36,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649331390] [2024-01-31 16:48:36,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:48:36,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:48:36,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:48:36,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:48:36,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:48:36,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649331390] [2024-01-31 16:48:36,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649331390] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:48:36,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:48:36,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 16:48:36,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083782356] [2024-01-31 16:48:36,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:48:36,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-01-31 16:48:36,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:48:36,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-01-31 16:48:36,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-01-31 16:48:36,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-31 16:48:36,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 34 transitions, 86 flow. Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:48:36,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:48:36,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-31 16:48:36,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:48:37,048 INFO L124 PetriNetUnfolderBase]: 466/696 cut-off events. [2024-01-31 16:48:37,049 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2024-01-31 16:48:37,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1442 conditions, 696 events. 466/696 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2428 event pairs, 333 based on Foata normal form. 132/675 useless extension candidates. Maximal degree in co-relation 1177. Up to 679 conditions per place. [2024-01-31 16:48:37,057 INFO L140 encePairwiseOnDemand]: 35/38 looper letters, 27 selfloop transitions, 0 changer transitions 0/31 dead transitions. [2024-01-31 16:48:37,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 31 transitions, 134 flow [2024-01-31 16:48:37,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-01-31 16:48:37,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-01-31 16:48:37,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 44 transitions. [2024-01-31 16:48:37,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5789473684210527 [2024-01-31 16:48:37,070 INFO L175 Difference]: Start difference. First operand has 37 places, 34 transitions, 86 flow. Second operand 2 states and 44 transitions. [2024-01-31 16:48:37,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 31 transitions, 134 flow [2024-01-31 16:48:37,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 31 transitions, 122 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-31 16:48:37,075 INFO L231 Difference]: Finished difference. Result has 32 places, 31 transitions, 68 flow [2024-01-31 16:48:37,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=68, PETRI_PLACES=32, PETRI_TRANSITIONS=31} [2024-01-31 16:48:37,080 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -5 predicate places. [2024-01-31 16:48:37,080 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 31 transitions, 68 flow [2024-01-31 16:48:37,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:48:37,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:48:37,081 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, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:48:37,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 16:48:37,081 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:48:37,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:48:37,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1846188191, now seen corresponding path program 1 times [2024-01-31 16:48:37,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:48:37,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119465401] [2024-01-31 16:48:37,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:48:37,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:48:37,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:48:37,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:48:37,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:48:37,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119465401] [2024-01-31 16:48:37,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119465401] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:48:37,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:48:37,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 16:48:37,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482715902] [2024-01-31 16:48:37,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:48:37,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:48:37,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:48:37,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:48:37,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:48:37,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-31 16:48:37,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 31 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:48:37,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:48:37,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-31 16:48:37,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:48:37,460 INFO L124 PetriNetUnfolderBase]: 466/697 cut-off events. [2024-01-31 16:48:37,462 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-01-31 16:48:37,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1400 conditions, 697 events. 466/697 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2434 event pairs, 333 based on Foata normal form. 0/544 useless extension candidates. Maximal degree in co-relation 1397. Up to 679 conditions per place. [2024-01-31 16:48:37,471 INFO L140 encePairwiseOnDemand]: 35/38 looper letters, 26 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2024-01-31 16:48:37,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 32 transitions, 126 flow [2024-01-31 16:48:37,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:48:37,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:48:37,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2024-01-31 16:48:37,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43859649122807015 [2024-01-31 16:48:37,478 INFO L175 Difference]: Start difference. First operand has 32 places, 31 transitions, 68 flow. Second operand 3 states and 50 transitions. [2024-01-31 16:48:37,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 32 transitions, 126 flow [2024-01-31 16:48:37,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 32 transitions, 126 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 16:48:37,486 INFO L231 Difference]: Finished difference. Result has 35 places, 32 transitions, 80 flow [2024-01-31 16:48:37,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=35, PETRI_TRANSITIONS=32} [2024-01-31 16:48:37,488 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -2 predicate places. [2024-01-31 16:48:37,488 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 32 transitions, 80 flow [2024-01-31 16:48:37,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:48:37,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:48:37,488 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:48:37,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 16:48:37,489 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:48:37,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:48:37,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1978685021, now seen corresponding path program 1 times [2024-01-31 16:48:37,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:48:37,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488798917] [2024-01-31 16:48:37,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:48:37,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:48:37,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:48:37,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:48:37,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:48:37,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488798917] [2024-01-31 16:48:37,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488798917] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:48:37,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728513187] [2024-01-31 16:48:37,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:48:37,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:48:37,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:48:37,653 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 16:48:37,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-01-31 16:48:37,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:48:37,839 INFO L262 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 5 conjunts are in the unsatisfiable core [2024-01-31 16:48:37,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:48:37,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:48:37,903 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:48:37,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:48:37,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728513187] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:48:37,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:48:37,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-01-31 16:48:37,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736096477] [2024-01-31 16:48:37,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:48:37,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:48:37,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:48:37,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:48:37,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:48:37,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-31 16:48:37,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 32 transitions, 80 flow. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:48:37,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:48:37,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-31 16:48:37,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:48:38,098 INFO L124 PetriNetUnfolderBase]: 466/699 cut-off events. [2024-01-31 16:48:38,098 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-01-31 16:48:38,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1413 conditions, 699 events. 466/699 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2418 event pairs, 333 based on Foata normal form. 0/546 useless extension candidates. Maximal degree in co-relation 1408. Up to 679 conditions per place. [2024-01-31 16:48:38,103 INFO L140 encePairwiseOnDemand]: 35/38 looper letters, 26 selfloop transitions, 4 changer transitions 0/34 dead transitions. [2024-01-31 16:48:38,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 34 transitions, 148 flow [2024-01-31 16:48:38,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:48:38,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:48:38,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 67 transitions. [2024-01-31 16:48:38,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3526315789473684 [2024-01-31 16:48:38,106 INFO L175 Difference]: Start difference. First operand has 35 places, 32 transitions, 80 flow. Second operand 5 states and 67 transitions. [2024-01-31 16:48:38,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 34 transitions, 148 flow [2024-01-31 16:48:38,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 34 transitions, 144 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-01-31 16:48:38,108 INFO L231 Difference]: Finished difference. Result has 40 places, 34 transitions, 102 flow [2024-01-31 16:48:38,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=102, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2024-01-31 16:48:38,109 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 3 predicate places. [2024-01-31 16:48:38,112 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 102 flow [2024-01-31 16:48:38,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:48:38,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:48:38,113 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:48:38,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-01-31 16:48:38,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:48:38,328 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:48:38,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:48:38,329 INFO L85 PathProgramCache]: Analyzing trace with hash 271554205, now seen corresponding path program 2 times [2024-01-31 16:48:38,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:48:38,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094757568] [2024-01-31 16:48:38,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:48:38,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:48:38,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:48:39,062 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-31 16:48:39,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:48:39,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094757568] [2024-01-31 16:48:39,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094757568] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:48:39,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:48:39,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:48:39,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651139373] [2024-01-31 16:48:39,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:48:39,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:48:39,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:48:39,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:48:39,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:48:39,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-31 16:48:39,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 102 flow. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:48:39,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:48:39,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-31 16:48:39,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:48:39,531 INFO L124 PetriNetUnfolderBase]: 1084/1703 cut-off events. [2024-01-31 16:48:39,531 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2024-01-31 16:48:39,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3359 conditions, 1703 events. 1084/1703 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 8251 event pairs, 333 based on Foata normal form. 1/1346 useless extension candidates. Maximal degree in co-relation 3352. Up to 712 conditions per place. [2024-01-31 16:48:39,540 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 72 selfloop transitions, 7 changer transitions 12/95 dead transitions. [2024-01-31 16:48:39,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 95 transitions, 419 flow [2024-01-31 16:48:39,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:48:39,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:48:39,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 131 transitions. [2024-01-31 16:48:39,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5745614035087719 [2024-01-31 16:48:39,546 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 102 flow. Second operand 6 states and 131 transitions. [2024-01-31 16:48:39,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 95 transitions, 419 flow [2024-01-31 16:48:39,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 95 transitions, 409 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-01-31 16:48:39,549 INFO L231 Difference]: Finished difference. Result has 48 places, 40 transitions, 143 flow [2024-01-31 16:48:39,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=143, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2024-01-31 16:48:39,551 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 11 predicate places. [2024-01-31 16:48:39,551 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 143 flow [2024-01-31 16:48:39,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:48:39,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:48:39,551 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:48:39,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 16:48:39,552 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:48:39,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:48:39,553 INFO L85 PathProgramCache]: Analyzing trace with hash -76451693, now seen corresponding path program 3 times [2024-01-31 16:48:39,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:48:39,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449828094] [2024-01-31 16:48:39,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:48:39,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:48:39,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:48:40,076 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-31 16:48:40,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:48:40,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449828094] [2024-01-31 16:48:40,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449828094] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:48:40,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:48:40,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:48:40,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749669046] [2024-01-31 16:48:40,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:48:40,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:48:40,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:48:40,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:48:40,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:48:40,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-31 16:48:40,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 143 flow. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:48:40,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:48:40,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-31 16:48:40,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:48:40,586 INFO L124 PetriNetUnfolderBase]: 1626/2548 cut-off events. [2024-01-31 16:48:40,586 INFO L125 PetriNetUnfolderBase]: For 1323/1339 co-relation queries the response was YES. [2024-01-31 16:48:40,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6286 conditions, 2548 events. 1626/2548 cut-off events. For 1323/1339 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 13395 event pairs, 627 based on Foata normal form. 1/2340 useless extension candidates. Maximal degree in co-relation 6274. Up to 1224 conditions per place. [2024-01-31 16:48:40,603 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 71 selfloop transitions, 8 changer transitions 12/95 dead transitions. [2024-01-31 16:48:40,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 95 transitions, 484 flow [2024-01-31 16:48:40,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:48:40,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:48:40,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 121 transitions. [2024-01-31 16:48:40,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5307017543859649 [2024-01-31 16:48:40,606 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 143 flow. Second operand 6 states and 121 transitions. [2024-01-31 16:48:40,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 95 transitions, 484 flow [2024-01-31 16:48:40,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 95 transitions, 480 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-01-31 16:48:40,613 INFO L231 Difference]: Finished difference. Result has 55 places, 44 transitions, 200 flow [2024-01-31 16:48:40,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=200, PETRI_PLACES=55, PETRI_TRANSITIONS=44} [2024-01-31 16:48:40,615 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 18 predicate places. [2024-01-31 16:48:40,615 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 44 transitions, 200 flow [2024-01-31 16:48:40,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:48:40,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:48:40,616 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:48:40,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 16:48:40,616 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:48:40,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:48:40,617 INFO L85 PathProgramCache]: Analyzing trace with hash -938515465, now seen corresponding path program 4 times [2024-01-31 16:48:40,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:48:40,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176716883] [2024-01-31 16:48:40,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:48:40,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:48:40,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:48:41,123 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-31 16:48:41,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:48:41,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176716883] [2024-01-31 16:48:41,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176716883] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:48:41,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:48:41,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:48:41,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708650024] [2024-01-31 16:48:41,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:48:41,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:48:41,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:48:41,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:48:41,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:48:41,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-31 16:48:41,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 44 transitions, 200 flow. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:48:41,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:48:41,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-31 16:48:41,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:48:41,647 INFO L124 PetriNetUnfolderBase]: 1612/2490 cut-off events. [2024-01-31 16:48:41,647 INFO L125 PetriNetUnfolderBase]: For 3465/3485 co-relation queries the response was YES. [2024-01-31 16:48:41,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7205 conditions, 2490 events. 1612/2490 cut-off events. For 3465/3485 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 12827 event pairs, 537 based on Foata normal form. 1/2310 useless extension candidates. Maximal degree in co-relation 7189. Up to 1144 conditions per place. [2024-01-31 16:48:41,666 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 76 selfloop transitions, 9 changer transitions 12/101 dead transitions. [2024-01-31 16:48:41,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 101 transitions, 591 flow [2024-01-31 16:48:41,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:48:41,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:48:41,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 125 transitions. [2024-01-31 16:48:41,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5482456140350878 [2024-01-31 16:48:41,668 INFO L175 Difference]: Start difference. First operand has 55 places, 44 transitions, 200 flow. Second operand 6 states and 125 transitions. [2024-01-31 16:48:41,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 101 transitions, 591 flow [2024-01-31 16:48:41,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 101 transitions, 578 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-01-31 16:48:41,676 INFO L231 Difference]: Finished difference. Result has 61 places, 47 transitions, 256 flow [2024-01-31 16:48:41,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=256, PETRI_PLACES=61, PETRI_TRANSITIONS=47} [2024-01-31 16:48:41,679 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 24 predicate places. [2024-01-31 16:48:41,679 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 47 transitions, 256 flow [2024-01-31 16:48:41,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:48:41,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:48:41,680 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:48:41,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 16:48:41,680 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:48:41,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:48:41,681 INFO L85 PathProgramCache]: Analyzing trace with hash 304965229, now seen corresponding path program 5 times [2024-01-31 16:48:41,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:48:41,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521752087] [2024-01-31 16:48:41,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:48:41,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:48:41,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:48:42,329 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-31 16:48:42,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:48:42,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521752087] [2024-01-31 16:48:42,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521752087] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:48:42,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:48:42,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:48:42,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349208112] [2024-01-31 16:48:42,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:48:42,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:48:42,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:48:42,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:48:42,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:48:42,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-31 16:48:42,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 47 transitions, 256 flow. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:48:42,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:48:42,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-31 16:48:42,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:48:43,424 INFO L124 PetriNetUnfolderBase]: 3098/4823 cut-off events. [2024-01-31 16:48:43,425 INFO L125 PetriNetUnfolderBase]: For 12093/12093 co-relation queries the response was YES. [2024-01-31 16:48:43,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15438 conditions, 4823 events. 3098/4823 cut-off events. For 12093/12093 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 28929 event pairs, 969 based on Foata normal form. 1/4519 useless extension candidates. Maximal degree in co-relation 15419. Up to 2334 conditions per place. [2024-01-31 16:48:43,466 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 123 selfloop transitions, 17 changer transitions 5/149 dead transitions. [2024-01-31 16:48:43,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 149 transitions, 1175 flow [2024-01-31 16:48:43,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:48:43,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:48:43,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 146 transitions. [2024-01-31 16:48:43,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5488721804511278 [2024-01-31 16:48:43,468 INFO L175 Difference]: Start difference. First operand has 61 places, 47 transitions, 256 flow. Second operand 7 states and 146 transitions. [2024-01-31 16:48:43,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 149 transitions, 1175 flow [2024-01-31 16:48:43,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 149 transitions, 1140 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-01-31 16:48:43,492 INFO L231 Difference]: Finished difference. Result has 69 places, 63 transitions, 484 flow [2024-01-31 16:48:43,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=484, PETRI_PLACES=69, PETRI_TRANSITIONS=63} [2024-01-31 16:48:43,493 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 32 predicate places. [2024-01-31 16:48:43,493 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 63 transitions, 484 flow [2024-01-31 16:48:43,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:48:43,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:48:43,494 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:48:43,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-31 16:48:43,494 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:48:43,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:48:43,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1953234849, now seen corresponding path program 6 times [2024-01-31 16:48:43,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:48:43,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215505093] [2024-01-31 16:48:43,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:48:43,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:48:43,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:48:43,989 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-31 16:48:43,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:48:43,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215505093] [2024-01-31 16:48:43,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215505093] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:48:43,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:48:43,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:48:43,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648614257] [2024-01-31 16:48:43,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:48:43,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:48:43,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:48:43,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:48:43,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:48:43,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-31 16:48:43,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 63 transitions, 484 flow. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:48:43,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:48:43,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-31 16:48:43,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:48:44,864 INFO L124 PetriNetUnfolderBase]: 3104/4913 cut-off events. [2024-01-31 16:48:44,865 INFO L125 PetriNetUnfolderBase]: For 17277/17277 co-relation queries the response was YES. [2024-01-31 16:48:44,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17507 conditions, 4913 events. 3104/4913 cut-off events. For 17277/17277 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 30385 event pairs, 1199 based on Foata normal form. 2/4859 useless extension candidates. Maximal degree in co-relation 17484. Up to 2242 conditions per place. [2024-01-31 16:48:44,906 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 79 selfloop transitions, 28 changer transitions 15/126 dead transitions. [2024-01-31 16:48:44,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 126 transitions, 1020 flow [2024-01-31 16:48:44,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:48:44,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:48:44,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 125 transitions. [2024-01-31 16:48:44,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5482456140350878 [2024-01-31 16:48:44,908 INFO L175 Difference]: Start difference. First operand has 69 places, 63 transitions, 484 flow. Second operand 6 states and 125 transitions. [2024-01-31 16:48:44,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 126 transitions, 1020 flow [2024-01-31 16:48:44,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 126 transitions, 998 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-01-31 16:48:44,927 INFO L231 Difference]: Finished difference. Result has 77 places, 69 transitions, 650 flow [2024-01-31 16:48:44,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=650, PETRI_PLACES=77, PETRI_TRANSITIONS=69} [2024-01-31 16:48:44,928 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 40 predicate places. [2024-01-31 16:48:44,928 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 69 transitions, 650 flow [2024-01-31 16:48:44,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:48:44,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:48:44,929 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:48:44,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-31 16:48:44,929 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:48:44,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:48:44,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1626795785, now seen corresponding path program 7 times [2024-01-31 16:48:44,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:48:44,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442544907] [2024-01-31 16:48:44,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:48:44,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:48:44,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:48:45,551 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-31 16:48:45,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:48:45,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442544907] [2024-01-31 16:48:45,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442544907] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:48:45,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:48:45,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:48:45,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956313436] [2024-01-31 16:48:45,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:48:45,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:48:45,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:48:45,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:48:45,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:48:45,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-31 16:48:45,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 69 transitions, 650 flow. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:48:45,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:48:45,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-31 16:48:45,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:48:46,934 INFO L124 PetriNetUnfolderBase]: 4037/6458 cut-off events. [2024-01-31 16:48:46,934 INFO L125 PetriNetUnfolderBase]: For 34695/34695 co-relation queries the response was YES. [2024-01-31 16:48:46,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25259 conditions, 6458 events. 4037/6458 cut-off events. For 34695/34695 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 43391 event pairs, 1263 based on Foata normal form. 1/6433 useless extension candidates. Maximal degree in co-relation 25232. Up to 2396 conditions per place. [2024-01-31 16:48:46,986 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 156 selfloop transitions, 28 changer transitions 5/193 dead transitions. [2024-01-31 16:48:46,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 193 transitions, 2122 flow [2024-01-31 16:48:46,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:48:46,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:48:46,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-01-31 16:48:46,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5789473684210527 [2024-01-31 16:48:46,988 INFO L175 Difference]: Start difference. First operand has 77 places, 69 transitions, 650 flow. Second operand 7 states and 154 transitions. [2024-01-31 16:48:46,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 193 transitions, 2122 flow [2024-01-31 16:48:47,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 193 transitions, 1997 flow, removed 38 selfloop flow, removed 2 redundant places. [2024-01-31 16:48:47,045 INFO L231 Difference]: Finished difference. Result has 85 places, 91 transitions, 1037 flow [2024-01-31 16:48:47,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1037, PETRI_PLACES=85, PETRI_TRANSITIONS=91} [2024-01-31 16:48:47,047 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 48 predicate places. [2024-01-31 16:48:47,047 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 91 transitions, 1037 flow [2024-01-31 16:48:47,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:48:47,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:48:47,048 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:48:47,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-31 16:48:47,048 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:48:47,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:48:47,049 INFO L85 PathProgramCache]: Analyzing trace with hash 473831401, now seen corresponding path program 8 times [2024-01-31 16:48:47,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:48:47,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930411454] [2024-01-31 16:48:47,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:48:47,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:48:47,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:48:47,501 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-31 16:48:47,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:48:47,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930411454] [2024-01-31 16:48:47,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930411454] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:48:47,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:48:47,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:48:47,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458196614] [2024-01-31 16:48:47,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:48:47,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:48:47,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:48:47,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:48:47,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:48:47,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-31 16:48:47,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 91 transitions, 1037 flow. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:48:47,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:48:47,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-31 16:48:47,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:48:48,635 INFO L124 PetriNetUnfolderBase]: 4037/6416 cut-off events. [2024-01-31 16:48:48,636 INFO L125 PetriNetUnfolderBase]: For 40262/40262 co-relation queries the response was YES. [2024-01-31 16:48:48,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26364 conditions, 6416 events. 4037/6416 cut-off events. For 40262/40262 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 42381 event pairs, 1369 based on Foata normal form. 5/6291 useless extension candidates. Maximal degree in co-relation 26333. Up to 2571 conditions per place. [2024-01-31 16:48:48,676 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 91 selfloop transitions, 47 changer transitions 16/158 dead transitions. [2024-01-31 16:48:48,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 158 transitions, 1690 flow [2024-01-31 16:48:48,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:48:48,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:48:48,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 125 transitions. [2024-01-31 16:48:48,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5482456140350878 [2024-01-31 16:48:48,678 INFO L175 Difference]: Start difference. First operand has 85 places, 91 transitions, 1037 flow. Second operand 6 states and 125 transitions. [2024-01-31 16:48:48,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 158 transitions, 1690 flow [2024-01-31 16:48:48,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 158 transitions, 1682 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-01-31 16:48:48,739 INFO L231 Difference]: Finished difference. Result has 93 places, 96 transitions, 1214 flow [2024-01-31 16:48:48,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1029, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1214, PETRI_PLACES=93, PETRI_TRANSITIONS=96} [2024-01-31 16:48:48,740 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 56 predicate places. [2024-01-31 16:48:48,741 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 96 transitions, 1214 flow [2024-01-31 16:48:48,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:48:48,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:48:48,741 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:48:48,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-31 16:48:48,742 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:48:48,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:48:48,742 INFO L85 PathProgramCache]: Analyzing trace with hash -978175775, now seen corresponding path program 9 times [2024-01-31 16:48:48,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:48:48,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361606011] [2024-01-31 16:48:48,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:48:48,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:48:48,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:48:49,283 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-31 16:48:49,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:48:49,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361606011] [2024-01-31 16:48:49,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361606011] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:48:49,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:48:49,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:48:49,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257664173] [2024-01-31 16:48:49,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:48:49,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:48:49,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:48:49,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:48:49,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:48:49,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-31 16:48:49,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 96 transitions, 1214 flow. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:48:49,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:48:49,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-31 16:48:49,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:48:50,754 INFO L124 PetriNetUnfolderBase]: 4666/7321 cut-off events. [2024-01-31 16:48:50,754 INFO L125 PetriNetUnfolderBase]: For 58955/58974 co-relation queries the response was YES. [2024-01-31 16:48:50,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32296 conditions, 7321 events. 4666/7321 cut-off events. For 58955/58974 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 48274 event pairs, 1605 based on Foata normal form. 2/7254 useless extension candidates. Maximal degree in co-relation 32261. Up to 2873 conditions per place. [2024-01-31 16:48:50,817 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 159 selfloop transitions, 43 changer transitions 2/208 dead transitions. [2024-01-31 16:48:50,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 208 transitions, 2699 flow [2024-01-31 16:48:50,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:48:50,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:48:50,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 147 transitions. [2024-01-31 16:48:50,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5526315789473685 [2024-01-31 16:48:50,819 INFO L175 Difference]: Start difference. First operand has 93 places, 96 transitions, 1214 flow. Second operand 7 states and 147 transitions. [2024-01-31 16:48:50,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 208 transitions, 2699 flow [2024-01-31 16:48:50,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 208 transitions, 2531 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-01-31 16:48:50,946 INFO L231 Difference]: Finished difference. Result has 99 places, 124 transitions, 1710 flow [2024-01-31 16:48:50,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1131, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1710, PETRI_PLACES=99, PETRI_TRANSITIONS=124} [2024-01-31 16:48:50,947 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 62 predicate places. [2024-01-31 16:48:50,947 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 124 transitions, 1710 flow [2024-01-31 16:48:50,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:48:50,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:48:50,948 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:48:50,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-31 16:48:50,948 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:48:50,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:48:50,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1321418311, now seen corresponding path program 10 times [2024-01-31 16:48:50,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:48:50,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17188405] [2024-01-31 16:48:50,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:48:50,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:48:51,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:48:51,500 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-31 16:48:51,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:48:51,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17188405] [2024-01-31 16:48:51,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17188405] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:48:51,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:48:51,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:48:51,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206319189] [2024-01-31 16:48:51,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:48:51,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:48:51,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:48:51,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:48:51,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:48:51,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-31 16:48:51,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 124 transitions, 1710 flow. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:48:51,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:48:51,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-31 16:48:51,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:48:52,714 INFO L124 PetriNetUnfolderBase]: 4675/7416 cut-off events. [2024-01-31 16:48:52,715 INFO L125 PetriNetUnfolderBase]: For 62197/62197 co-relation queries the response was YES. [2024-01-31 16:48:52,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33173 conditions, 7416 events. 4675/7416 cut-off events. For 62197/62197 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 50317 event pairs, 1651 based on Foata normal form. 1/7353 useless extension candidates. Maximal degree in co-relation 33135. Up to 2986 conditions per place. [2024-01-31 16:48:52,781 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 112 selfloop transitions, 74 changer transitions 5/195 dead transitions. [2024-01-31 16:48:52,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 195 transitions, 2561 flow [2024-01-31 16:48:52,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:48:52,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:48:52,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 144 transitions. [2024-01-31 16:48:52,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5413533834586466 [2024-01-31 16:48:52,784 INFO L175 Difference]: Start difference. First operand has 99 places, 124 transitions, 1710 flow. Second operand 7 states and 144 transitions. [2024-01-31 16:48:52,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 195 transitions, 2561 flow [2024-01-31 16:48:52,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 195 transitions, 2545 flow, removed 8 selfloop flow, removed 0 redundant places. [2024-01-31 16:48:52,911 INFO L231 Difference]: Finished difference. Result has 109 places, 137 transitions, 2093 flow [2024-01-31 16:48:52,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1694, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2093, PETRI_PLACES=109, PETRI_TRANSITIONS=137} [2024-01-31 16:48:52,912 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 72 predicate places. [2024-01-31 16:48:52,912 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 137 transitions, 2093 flow [2024-01-31 16:48:52,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:48:52,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:48:52,913 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:48:52,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-31 16:48:52,913 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:48:52,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:48:52,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1740734113, now seen corresponding path program 11 times [2024-01-31 16:48:52,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:48:52,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472016997] [2024-01-31 16:48:52,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:48:52,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:48:52,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:48:53,342 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-31 16:48:53,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:48:53,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472016997] [2024-01-31 16:48:53,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472016997] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:48:53,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:48:53,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:48:53,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243825791] [2024-01-31 16:48:53,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:48:53,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:48:53,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:48:53,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:48:53,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:48:53,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-31 16:48:53,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 137 transitions, 2093 flow. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:48:53,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:48:53,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-31 16:48:53,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:48:54,413 INFO L124 PetriNetUnfolderBase]: 4675/7396 cut-off events. [2024-01-31 16:48:54,414 INFO L125 PetriNetUnfolderBase]: For 73820/73820 co-relation queries the response was YES. [2024-01-31 16:48:54,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35049 conditions, 7396 events. 4675/7396 cut-off events. For 73820/73820 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 50071 event pairs, 1629 based on Foata normal form. 5/7337 useless extension candidates. Maximal degree in co-relation 35006. Up to 2986 conditions per place. [2024-01-31 16:48:54,466 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 105 selfloop transitions, 79 changer transitions 19/207 dead transitions. [2024-01-31 16:48:54,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 207 transitions, 3068 flow [2024-01-31 16:48:54,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:48:54,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:48:54,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 123 transitions. [2024-01-31 16:48:54,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5394736842105263 [2024-01-31 16:48:54,468 INFO L175 Difference]: Start difference. First operand has 109 places, 137 transitions, 2093 flow. Second operand 6 states and 123 transitions. [2024-01-31 16:48:54,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 207 transitions, 3068 flow [2024-01-31 16:48:54,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 207 transitions, 2884 flow, removed 39 selfloop flow, removed 2 redundant places. [2024-01-31 16:48:54,602 INFO L231 Difference]: Finished difference. Result has 115 places, 144 transitions, 2299 flow [2024-01-31 16:48:54,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1937, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2299, PETRI_PLACES=115, PETRI_TRANSITIONS=144} [2024-01-31 16:48:54,603 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 78 predicate places. [2024-01-31 16:48:54,603 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 144 transitions, 2299 flow [2024-01-31 16:48:54,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:48:54,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:48:54,604 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:48:54,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-01-31 16:48:54,605 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:48:54,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:48:54,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1478298858, now seen corresponding path program 1 times [2024-01-31 16:48:54,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:48:54,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748366721] [2024-01-31 16:48:54,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:48:54,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:48:54,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:48:54,941 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-31 16:48:54,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:48:54,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748366721] [2024-01-31 16:48:54,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748366721] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:48:54,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:48:54,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:48:54,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426659520] [2024-01-31 16:48:54,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:48:54,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:48:54,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:48:54,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:48:54,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:48:54,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-31 16:48:54,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 144 transitions, 2299 flow. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:48:54,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:48:54,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-31 16:48:54,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:48:56,134 INFO L124 PetriNetUnfolderBase]: 5288/8406 cut-off events. [2024-01-31 16:48:56,134 INFO L125 PetriNetUnfolderBase]: For 84167/84167 co-relation queries the response was YES. [2024-01-31 16:48:56,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39420 conditions, 8406 events. 5288/8406 cut-off events. For 84167/84167 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 58155 event pairs, 1062 based on Foata normal form. 14/8364 useless extension candidates. Maximal degree in co-relation 39374. Up to 4118 conditions per place. [2024-01-31 16:48:56,184 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 179 selfloop transitions, 52 changer transitions 1/236 dead transitions. [2024-01-31 16:48:56,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 236 transitions, 3438 flow [2024-01-31 16:48:56,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:48:56,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:48:56,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 149 transitions. [2024-01-31 16:48:56,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5601503759398496 [2024-01-31 16:48:56,185 INFO L175 Difference]: Start difference. First operand has 115 places, 144 transitions, 2299 flow. Second operand 7 states and 149 transitions. [2024-01-31 16:48:56,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 236 transitions, 3438 flow [2024-01-31 16:48:56,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 236 transitions, 3220 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-01-31 16:48:56,317 INFO L231 Difference]: Finished difference. Result has 119 places, 151 transitions, 2392 flow [2024-01-31 16:48:56,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2131, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2392, PETRI_PLACES=119, PETRI_TRANSITIONS=151} [2024-01-31 16:48:56,318 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 82 predicate places. [2024-01-31 16:48:56,318 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 151 transitions, 2392 flow [2024-01-31 16:48:56,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:48:56,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:48:56,319 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:48:56,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-01-31 16:48:56,319 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:48:56,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:48:56,320 INFO L85 PathProgramCache]: Analyzing trace with hash 539545376, now seen corresponding path program 2 times [2024-01-31 16:48:56,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:48:56,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596119953] [2024-01-31 16:48:56,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:48:56,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:48:56,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:48:56,655 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-31 16:48:56,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:48:56,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596119953] [2024-01-31 16:48:56,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596119953] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:48:56,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:48:56,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:48:56,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279555902] [2024-01-31 16:48:56,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:48:56,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:48:56,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:48:56,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:48:56,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:48:56,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-31 16:48:56,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 151 transitions, 2392 flow. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:48:56,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:48:56,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-31 16:48:56,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:48:57,885 INFO L124 PetriNetUnfolderBase]: 5639/8862 cut-off events. [2024-01-31 16:48:57,885 INFO L125 PetriNetUnfolderBase]: For 94383/94390 co-relation queries the response was YES. [2024-01-31 16:48:57,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41693 conditions, 8862 events. 5639/8862 cut-off events. For 94383/94390 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 60395 event pairs, 1467 based on Foata normal form. 14/8854 useless extension candidates. Maximal degree in co-relation 41646. Up to 2652 conditions per place. [2024-01-31 16:48:57,952 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 227 selfloop transitions, 38 changer transitions 1/270 dead transitions. [2024-01-31 16:48:57,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 270 transitions, 4088 flow [2024-01-31 16:48:57,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:48:57,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:48:57,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-01-31 16:48:57,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5789473684210527 [2024-01-31 16:48:57,955 INFO L175 Difference]: Start difference. First operand has 119 places, 151 transitions, 2392 flow. Second operand 7 states and 154 transitions. [2024-01-31 16:48:57,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 270 transitions, 4088 flow [2024-01-31 16:48:58,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 270 transitions, 3989 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-01-31 16:48:58,110 INFO L231 Difference]: Finished difference. Result has 127 places, 162 transitions, 2697 flow [2024-01-31 16:48:58,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2315, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2697, PETRI_PLACES=127, PETRI_TRANSITIONS=162} [2024-01-31 16:48:58,111 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 90 predicate places. [2024-01-31 16:48:58,111 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 162 transitions, 2697 flow [2024-01-31 16:48:58,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:48:58,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:48:58,111 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:48:58,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-01-31 16:48:58,112 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:48:58,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:48:58,112 INFO L85 PathProgramCache]: Analyzing trace with hash -129333030, now seen corresponding path program 3 times [2024-01-31 16:48:58,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:48:58,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391238560] [2024-01-31 16:48:58,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:48:58,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:48:58,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:48:58,459 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-31 16:48:58,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:48:58,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391238560] [2024-01-31 16:48:58,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391238560] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:48:58,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:48:58,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:48:58,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696659714] [2024-01-31 16:48:58,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:48:58,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:48:58,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:48:58,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:48:58,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:48:58,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-31 16:48:58,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 162 transitions, 2697 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) [2024-01-31 16:48:58,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:48:58,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-31 16:48:58,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:49:00,602 INFO L124 PetriNetUnfolderBase]: 7570/12209 cut-off events. [2024-01-31 16:49:00,602 INFO L125 PetriNetUnfolderBase]: For 123717/123717 co-relation queries the response was YES. [2024-01-31 16:49:00,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55915 conditions, 12209 events. 7570/12209 cut-off events. For 123717/123717 co-relation queries the response was YES. Maximal size of possible extension queue 733. Compared 90665 event pairs, 1046 based on Foata normal form. 14/12211 useless extension candidates. Maximal degree in co-relation 55864. Up to 5842 conditions per place. [2024-01-31 16:49:00,699 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 248 selfloop transitions, 44 changer transitions 1/297 dead transitions. [2024-01-31 16:49:00,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 297 transitions, 4708 flow [2024-01-31 16:49:00,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:49:00,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:49:00,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-01-31 16:49:00,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5789473684210527 [2024-01-31 16:49:00,700 INFO L175 Difference]: Start difference. First operand has 127 places, 162 transitions, 2697 flow. Second operand 7 states and 154 transitions. [2024-01-31 16:49:00,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 297 transitions, 4708 flow [2024-01-31 16:49:00,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 297 transitions, 4645 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-01-31 16:49:00,911 INFO L231 Difference]: Finished difference. Result has 136 places, 179 transitions, 3112 flow [2024-01-31 16:49:00,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2660, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3112, PETRI_PLACES=136, PETRI_TRANSITIONS=179} [2024-01-31 16:49:00,911 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 99 predicate places. [2024-01-31 16:49:00,911 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 179 transitions, 3112 flow [2024-01-31 16:49:00,912 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) [2024-01-31 16:49:00,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:49:00,912 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:49:00,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-01-31 16:49:00,912 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:49:00,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:49:00,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1539284146, now seen corresponding path program 4 times [2024-01-31 16:49:00,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:49:00,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355756927] [2024-01-31 16:49:00,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:49:00,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:49:00,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:49:01,252 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-31 16:49:01,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:49:01,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355756927] [2024-01-31 16:49:01,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355756927] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:49:01,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:49:01,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:49:01,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375823358] [2024-01-31 16:49:01,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:49:01,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:49:01,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:49:01,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:49:01,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:49:01,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-31 16:49:01,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 179 transitions, 3112 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) [2024-01-31 16:49:01,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:49:01,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-31 16:49:01,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:49:03,182 INFO L124 PetriNetUnfolderBase]: 7852/12472 cut-off events. [2024-01-31 16:49:03,182 INFO L125 PetriNetUnfolderBase]: For 146260/146281 co-relation queries the response was YES. [2024-01-31 16:49:03,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60356 conditions, 12472 events. 7852/12472 cut-off events. For 146260/146281 co-relation queries the response was YES. Maximal size of possible extension queue 758. Compared 90338 event pairs, 3061 based on Foata normal form. 20/12474 useless extension candidates. Maximal degree in co-relation 60300. Up to 5304 conditions per place. [2024-01-31 16:49:03,296 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 231 selfloop transitions, 59 changer transitions 1/295 dead transitions. [2024-01-31 16:49:03,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 295 transitions, 4737 flow [2024-01-31 16:49:03,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:49:03,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:49:03,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-01-31 16:49:03,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6127819548872181 [2024-01-31 16:49:03,298 INFO L175 Difference]: Start difference. First operand has 136 places, 179 transitions, 3112 flow. Second operand 7 states and 163 transitions. [2024-01-31 16:49:03,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 295 transitions, 4737 flow [2024-01-31 16:49:03,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 295 transitions, 4700 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-01-31 16:49:03,535 INFO L231 Difference]: Finished difference. Result has 144 places, 185 transitions, 3355 flow [2024-01-31 16:49:03,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3075, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3355, PETRI_PLACES=144, PETRI_TRANSITIONS=185} [2024-01-31 16:49:03,536 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 107 predicate places. [2024-01-31 16:49:03,536 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 185 transitions, 3355 flow [2024-01-31 16:49:03,536 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) [2024-01-31 16:49:03,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:49:03,536 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:49:03,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-01-31 16:49:03,537 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:49:03,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:49:03,537 INFO L85 PathProgramCache]: Analyzing trace with hash -32886620, now seen corresponding path program 5 times [2024-01-31 16:49:03,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:49:03,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112725103] [2024-01-31 16:49:03,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:49:03,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:49:03,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:49:03,893 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-31 16:49:03,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:49:03,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112725103] [2024-01-31 16:49:03,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112725103] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:49:03,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:49:03,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:49:03,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935503198] [2024-01-31 16:49:03,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:49:03,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:49:03,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:49:03,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:49:03,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:49:03,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-31 16:49:03,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 185 transitions, 3355 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) [2024-01-31 16:49:03,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:49:03,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-31 16:49:03,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:49:05,978 INFO L124 PetriNetUnfolderBase]: 8092/12904 cut-off events. [2024-01-31 16:49:05,979 INFO L125 PetriNetUnfolderBase]: For 164965/164965 co-relation queries the response was YES. [2024-01-31 16:49:06,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63865 conditions, 12904 events. 8092/12904 cut-off events. For 164965/164965 co-relation queries the response was YES. Maximal size of possible extension queue 789. Compared 94611 event pairs, 2773 based on Foata normal form. 6/12892 useless extension candidates. Maximal degree in co-relation 63806. Up to 5304 conditions per place. [2024-01-31 16:49:06,068 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 224 selfloop transitions, 67 changer transitions 1/296 dead transitions. [2024-01-31 16:49:06,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 296 transitions, 4949 flow [2024-01-31 16:49:06,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:49:06,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:49:06,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-01-31 16:49:06,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6127819548872181 [2024-01-31 16:49:06,070 INFO L175 Difference]: Start difference. First operand has 144 places, 185 transitions, 3355 flow. Second operand 7 states and 163 transitions. [2024-01-31 16:49:06,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 296 transitions, 4949 flow [2024-01-31 16:49:06,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 296 transitions, 4781 flow, removed 27 selfloop flow, removed 3 redundant places. [2024-01-31 16:49:06,363 INFO L231 Difference]: Finished difference. Result has 150 places, 193 transitions, 3551 flow [2024-01-31 16:49:06,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3205, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3551, PETRI_PLACES=150, PETRI_TRANSITIONS=193} [2024-01-31 16:49:06,364 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 113 predicate places. [2024-01-31 16:49:06,364 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 193 transitions, 3551 flow [2024-01-31 16:49:06,364 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) [2024-01-31 16:49:06,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:49:06,364 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:49:06,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-01-31 16:49:06,365 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:49:06,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:49:06,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1529648160, now seen corresponding path program 6 times [2024-01-31 16:49:06,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:49:06,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86117371] [2024-01-31 16:49:06,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:49:06,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:49:06,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:49:06,709 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-31 16:49:06,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:49:06,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86117371] [2024-01-31 16:49:06,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86117371] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:49:06,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:49:06,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:49:06,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540946562] [2024-01-31 16:49:06,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:49:06,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:49:06,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:49:06,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:49:06,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:49:06,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-31 16:49:06,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 193 transitions, 3551 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) [2024-01-31 16:49:06,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:49:06,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-31 16:49:06,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:49:08,660 INFO L124 PetriNetUnfolderBase]: 8069/12944 cut-off events. [2024-01-31 16:49:08,661 INFO L125 PetriNetUnfolderBase]: For 172825/172858 co-relation queries the response was YES. [2024-01-31 16:49:08,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64195 conditions, 12944 events. 8069/12944 cut-off events. For 172825/172858 co-relation queries the response was YES. Maximal size of possible extension queue 799. Compared 96217 event pairs, 2337 based on Foata normal form. 24/12942 useless extension candidates. Maximal degree in co-relation 64133. Up to 5304 conditions per place. [2024-01-31 16:49:08,769 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 224 selfloop transitions, 67 changer transitions 1/296 dead transitions. [2024-01-31 16:49:08,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 296 transitions, 4991 flow [2024-01-31 16:49:08,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:49:08,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:49:08,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-01-31 16:49:08,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6127819548872181 [2024-01-31 16:49:08,770 INFO L175 Difference]: Start difference. First operand has 150 places, 193 transitions, 3551 flow. Second operand 7 states and 163 transitions. [2024-01-31 16:49:08,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 296 transitions, 4991 flow [2024-01-31 16:49:09,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 296 transitions, 4849 flow, removed 29 selfloop flow, removed 3 redundant places. [2024-01-31 16:49:09,145 INFO L231 Difference]: Finished difference. Result has 155 places, 194 transitions, 3590 flow [2024-01-31 16:49:09,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3421, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3590, PETRI_PLACES=155, PETRI_TRANSITIONS=194} [2024-01-31 16:49:09,146 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 118 predicate places. [2024-01-31 16:49:09,146 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 194 transitions, 3590 flow [2024-01-31 16:49:09,146 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) [2024-01-31 16:49:09,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:49:09,146 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:49:09,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-01-31 16:49:09,146 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:49:09,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:49:09,147 INFO L85 PathProgramCache]: Analyzing trace with hash 979003894, now seen corresponding path program 7 times [2024-01-31 16:49:09,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:49:09,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500795710] [2024-01-31 16:49:09,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:49:09,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:49:09,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:49:09,472 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-31 16:49:09,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:49:09,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500795710] [2024-01-31 16:49:09,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500795710] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:49:09,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:49:09,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:49:09,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639335987] [2024-01-31 16:49:09,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:49:09,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:49:09,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:49:09,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:49:09,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:49:09,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-31 16:49:09,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 194 transitions, 3590 flow. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:49:09,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:49:09,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-31 16:49:09,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:49:11,531 INFO L124 PetriNetUnfolderBase]: 8420/13585 cut-off events. [2024-01-31 16:49:11,531 INFO L125 PetriNetUnfolderBase]: For 166429/166462 co-relation queries the response was YES. [2024-01-31 16:49:11,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65956 conditions, 13585 events. 8420/13585 cut-off events. For 166429/166462 co-relation queries the response was YES. Maximal size of possible extension queue 827. Compared 102434 event pairs, 2151 based on Foata normal form. 24/13559 useless extension candidates. Maximal degree in co-relation 65892. Up to 5304 conditions per place. [2024-01-31 16:49:11,644 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 264 selfloop transitions, 49 changer transitions 1/318 dead transitions. [2024-01-31 16:49:11,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 318 transitions, 5403 flow [2024-01-31 16:49:11,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:49:11,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:49:11,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-01-31 16:49:11,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6015037593984962 [2024-01-31 16:49:11,645 INFO L175 Difference]: Start difference. First operand has 155 places, 194 transitions, 3590 flow. Second operand 7 states and 160 transitions. [2024-01-31 16:49:11,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 318 transitions, 5403 flow [2024-01-31 16:49:12,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 318 transitions, 5342 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-01-31 16:49:12,224 INFO L231 Difference]: Finished difference. Result has 162 places, 197 transitions, 3724 flow [2024-01-31 16:49:12,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3529, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3724, PETRI_PLACES=162, PETRI_TRANSITIONS=197} [2024-01-31 16:49:12,225 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 125 predicate places. [2024-01-31 16:49:12,225 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 197 transitions, 3724 flow [2024-01-31 16:49:12,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:49:12,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:49:12,225 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:49:12,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-01-31 16:49:12,225 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:49:12,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:49:12,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1197162162, now seen corresponding path program 8 times [2024-01-31 16:49:12,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:49:12,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203482186] [2024-01-31 16:49:12,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:49:12,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:49:12,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:49:12,593 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-31 16:49:12,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:49:12,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203482186] [2024-01-31 16:49:12,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203482186] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:49:12,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:49:12,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:49:12,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773691250] [2024-01-31 16:49:12,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:49:12,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:49:12,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:49:12,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:49:12,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:49:12,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-31 16:49:12,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 197 transitions, 3724 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) [2024-01-31 16:49:12,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:49:12,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-31 16:49:12,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:49:15,461 INFO L124 PetriNetUnfolderBase]: 9171/14874 cut-off events. [2024-01-31 16:49:15,461 INFO L125 PetriNetUnfolderBase]: For 191181/191181 co-relation queries the response was YES. [2024-01-31 16:49:15,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73451 conditions, 14874 events. 9171/14874 cut-off events. For 191181/191181 co-relation queries the response was YES. Maximal size of possible extension queue 928. Compared 114597 event pairs, 2471 based on Foata normal form. 6/14830 useless extension candidates. Maximal degree in co-relation 73384. Up to 5304 conditions per place. [2024-01-31 16:49:15,569 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 228 selfloop transitions, 87 changer transitions 1/320 dead transitions. [2024-01-31 16:49:15,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 320 transitions, 5649 flow [2024-01-31 16:49:15,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:49:15,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:49:15,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-01-31 16:49:15,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6015037593984962 [2024-01-31 16:49:15,570 INFO L175 Difference]: Start difference. First operand has 162 places, 197 transitions, 3724 flow. Second operand 7 states and 160 transitions. [2024-01-31 16:49:15,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 320 transitions, 5649 flow [2024-01-31 16:49:15,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 320 transitions, 5568 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-01-31 16:49:15,911 INFO L231 Difference]: Finished difference. Result has 169 places, 229 transitions, 4646 flow [2024-01-31 16:49:15,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3658, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4646, PETRI_PLACES=169, PETRI_TRANSITIONS=229} [2024-01-31 16:49:15,911 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 132 predicate places. [2024-01-31 16:49:15,911 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 229 transitions, 4646 flow [2024-01-31 16:49:15,911 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) [2024-01-31 16:49:15,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:49:15,912 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:49:15,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-01-31 16:49:15,912 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:49:15,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:49:15,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1322836188, now seen corresponding path program 9 times [2024-01-31 16:49:15,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:49:15,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293341008] [2024-01-31 16:49:15,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:49:15,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:49:15,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:49:16,226 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-31 16:49:16,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:49:16,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293341008] [2024-01-31 16:49:16,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293341008] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:49:16,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:49:16,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:49:16,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363696757] [2024-01-31 16:49:16,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:49:16,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:49:16,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:49:16,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:49:16,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:49:16,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-31 16:49:16,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 229 transitions, 4646 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) [2024-01-31 16:49:16,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:49:16,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-31 16:49:16,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:49:18,699 INFO L124 PetriNetUnfolderBase]: 9148/14821 cut-off events. [2024-01-31 16:49:18,699 INFO L125 PetriNetUnfolderBase]: For 214900/214900 co-relation queries the response was YES. [2024-01-31 16:49:18,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76164 conditions, 14821 events. 9148/14821 cut-off events. For 214900/214900 co-relation queries the response was YES. Maximal size of possible extension queue 923. Compared 113839 event pairs, 2365 based on Foata normal form. 14/14809 useless extension candidates. Maximal degree in co-relation 76094. Up to 5304 conditions per place. [2024-01-31 16:49:18,829 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 266 selfloop transitions, 61 changer transitions 1/332 dead transitions. [2024-01-31 16:49:18,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 332 transitions, 6128 flow [2024-01-31 16:49:18,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:49:18,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:49:18,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2024-01-31 16:49:18,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5902255639097744 [2024-01-31 16:49:18,831 INFO L175 Difference]: Start difference. First operand has 169 places, 229 transitions, 4646 flow. Second operand 7 states and 157 transitions. [2024-01-31 16:49:18,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 332 transitions, 6128 flow [2024-01-31 16:49:19,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 332 transitions, 6020 flow, removed 28 selfloop flow, removed 2 redundant places. [2024-01-31 16:49:19,388 INFO L231 Difference]: Finished difference. Result has 175 places, 232 transitions, 4757 flow [2024-01-31 16:49:19,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4560, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4757, PETRI_PLACES=175, PETRI_TRANSITIONS=232} [2024-01-31 16:49:19,389 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 138 predicate places. [2024-01-31 16:49:19,389 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 232 transitions, 4757 flow [2024-01-31 16:49:19,389 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) [2024-01-31 16:49:19,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:49:19,389 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:49:19,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-01-31 16:49:19,390 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:49:19,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:49:19,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1266465062, now seen corresponding path program 10 times [2024-01-31 16:49:19,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:49:19,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830714385] [2024-01-31 16:49:19,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:49:19,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:49:19,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:49:19,704 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-31 16:49:19,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:49:19,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830714385] [2024-01-31 16:49:19,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830714385] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:49:19,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:49:19,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:49:19,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950967838] [2024-01-31 16:49:19,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:49:19,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:49:19,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:49:19,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:49:19,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:49:19,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-31 16:49:19,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 232 transitions, 4757 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) [2024-01-31 16:49:19,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:49:19,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-31 16:49:19,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:49:22,124 INFO L124 PetriNetUnfolderBase]: 9148/14703 cut-off events. [2024-01-31 16:49:22,124 INFO L125 PetriNetUnfolderBase]: For 217587/217608 co-relation queries the response was YES. [2024-01-31 16:49:22,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76078 conditions, 14703 events. 9148/14703 cut-off events. For 217587/217608 co-relation queries the response was YES. Maximal size of possible extension queue 910. Compared 111039 event pairs, 3259 based on Foata normal form. 34/14719 useless extension candidates. Maximal degree in co-relation 76006. Up to 5304 conditions per place. [2024-01-31 16:49:22,261 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 227 selfloop transitions, 92 changer transitions 1/324 dead transitions. [2024-01-31 16:49:22,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 324 transitions, 6086 flow [2024-01-31 16:49:22,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:49:22,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:49:22,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-01-31 16:49:22,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6015037593984962 [2024-01-31 16:49:22,263 INFO L175 Difference]: Start difference. First operand has 175 places, 232 transitions, 4757 flow. Second operand 7 states and 160 transitions. [2024-01-31 16:49:22,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 324 transitions, 6086 flow [2024-01-31 16:49:22,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 324 transitions, 6004 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-31 16:49:22,713 INFO L231 Difference]: Finished difference. Result has 180 places, 236 transitions, 4992 flow [2024-01-31 16:49:22,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4678, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4992, PETRI_PLACES=180, PETRI_TRANSITIONS=236} [2024-01-31 16:49:22,714 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 143 predicate places. [2024-01-31 16:49:22,714 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 236 transitions, 4992 flow [2024-01-31 16:49:22,714 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) [2024-01-31 16:49:22,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:49:22,715 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:49:22,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-01-31 16:49:22,717 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:49:22,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:49:22,717 INFO L85 PathProgramCache]: Analyzing trace with hash 301712452, now seen corresponding path program 11 times [2024-01-31 16:49:22,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:49:22,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316252843] [2024-01-31 16:49:22,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:49:22,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:49:22,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:49:23,038 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-31 16:49:23,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:49:23,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316252843] [2024-01-31 16:49:23,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316252843] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:49:23,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:49:23,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:49:23,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471173312] [2024-01-31 16:49:23,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:49:23,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:49:23,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:49:23,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:49:23,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:49:23,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-31 16:49:23,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 236 transitions, 4992 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) [2024-01-31 16:49:23,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:49:23,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-31 16:49:23,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:49:25,577 INFO L124 PetriNetUnfolderBase]: 9135/14792 cut-off events. [2024-01-31 16:49:25,577 INFO L125 PetriNetUnfolderBase]: For 221737/221770 co-relation queries the response was YES. [2024-01-31 16:49:25,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76984 conditions, 14792 events. 9135/14792 cut-off events. For 221737/221770 co-relation queries the response was YES. Maximal size of possible extension queue 920. Compared 113693 event pairs, 2405 based on Foata normal form. 14/14756 useless extension candidates. Maximal degree in co-relation 76910. Up to 5304 conditions per place. [2024-01-31 16:49:25,705 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 260 selfloop transitions, 59 changer transitions 6/329 dead transitions. [2024-01-31 16:49:25,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 329 transitions, 6355 flow [2024-01-31 16:49:25,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:49:25,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:49:25,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 149 transitions. [2024-01-31 16:49:25,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5601503759398496 [2024-01-31 16:49:25,706 INFO L175 Difference]: Start difference. First operand has 180 places, 236 transitions, 4992 flow. Second operand 7 states and 149 transitions. [2024-01-31 16:49:25,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 329 transitions, 6355 flow [2024-01-31 16:49:26,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 329 transitions, 6246 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-01-31 16:49:26,229 INFO L231 Difference]: Finished difference. Result has 183 places, 234 transitions, 4951 flow [2024-01-31 16:49:26,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4850, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4951, PETRI_PLACES=183, PETRI_TRANSITIONS=234} [2024-01-31 16:49:26,230 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 146 predicate places. [2024-01-31 16:49:26,230 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 234 transitions, 4951 flow [2024-01-31 16:49:26,230 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) [2024-01-31 16:49:26,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:49:26,230 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:49:26,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-01-31 16:49:26,230 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:49:26,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:49:26,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1347665474, now seen corresponding path program 12 times [2024-01-31 16:49:26,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:49:26,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631200996] [2024-01-31 16:49:26,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:49:26,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:49:26,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:49:26,583 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-31 16:49:26,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:49:26,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631200996] [2024-01-31 16:49:26,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631200996] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:49:26,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:49:26,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:49:26,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725959728] [2024-01-31 16:49:26,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:49:26,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:49:26,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:49:26,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:49:26,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:49:26,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-31 16:49:26,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 234 transitions, 4951 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) [2024-01-31 16:49:26,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:49:26,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-31 16:49:26,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:49:29,138 INFO L124 PetriNetUnfolderBase]: 9155/14766 cut-off events. [2024-01-31 16:49:29,139 INFO L125 PetriNetUnfolderBase]: For 226508/226508 co-relation queries the response was YES. [2024-01-31 16:49:29,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77036 conditions, 14766 events. 9155/14766 cut-off events. For 226508/226508 co-relation queries the response was YES. Maximal size of possible extension queue 912. Compared 112332 event pairs, 3099 based on Foata normal form. 6/14742 useless extension candidates. Maximal degree in co-relation 76962. Up to 5304 conditions per place. [2024-01-31 16:49:29,307 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 232 selfloop transitions, 91 changer transitions 1/328 dead transitions. [2024-01-31 16:49:29,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 328 transitions, 6327 flow [2024-01-31 16:49:29,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:49:29,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:49:29,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2024-01-31 16:49:29,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5902255639097744 [2024-01-31 16:49:29,309 INFO L175 Difference]: Start difference. First operand has 183 places, 234 transitions, 4951 flow. Second operand 7 states and 157 transitions. [2024-01-31 16:49:29,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 328 transitions, 6327 flow [2024-01-31 16:49:29,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 328 transitions, 6232 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-31 16:49:29,864 INFO L231 Difference]: Finished difference. Result has 186 places, 241 transitions, 5246 flow [2024-01-31 16:49:29,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4862, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5246, PETRI_PLACES=186, PETRI_TRANSITIONS=241} [2024-01-31 16:49:29,865 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 149 predicate places. [2024-01-31 16:49:29,865 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 241 transitions, 5246 flow [2024-01-31 16:49:29,865 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) [2024-01-31 16:49:29,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:49:29,865 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:49:29,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-01-31 16:49:29,866 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:49:29,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:49:29,866 INFO L85 PathProgramCache]: Analyzing trace with hash -564182836, now seen corresponding path program 13 times [2024-01-31 16:49:29,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:49:29,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805784094] [2024-01-31 16:49:29,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:49:29,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:49:29,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:49:30,193 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-31 16:49:30,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:49:30,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805784094] [2024-01-31 16:49:30,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805784094] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:49:30,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:49:30,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:49:30,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188449167] [2024-01-31 16:49:30,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:49:30,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:49:30,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:49:30,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:49:30,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:49:30,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-31 16:49:30,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 241 transitions, 5246 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) [2024-01-31 16:49:30,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:49:30,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-31 16:49:30,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:49:32,972 INFO L124 PetriNetUnfolderBase]: 9123/14779 cut-off events. [2024-01-31 16:49:32,972 INFO L125 PetriNetUnfolderBase]: For 237635/237668 co-relation queries the response was YES. [2024-01-31 16:49:33,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78448 conditions, 14779 events. 9123/14779 cut-off events. For 237635/237668 co-relation queries the response was YES. Maximal size of possible extension queue 918. Compared 113571 event pairs, 2497 based on Foata normal form. 24/14777 useless extension candidates. Maximal degree in co-relation 78371. Up to 5304 conditions per place. [2024-01-31 16:49:33,094 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 234 selfloop transitions, 92 changer transitions 1/331 dead transitions. [2024-01-31 16:49:33,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 331 transitions, 6571 flow [2024-01-31 16:49:33,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:49:33,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:49:33,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2024-01-31 16:49:33,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5902255639097744 [2024-01-31 16:49:33,095 INFO L175 Difference]: Start difference. First operand has 186 places, 241 transitions, 5246 flow. Second operand 7 states and 157 transitions. [2024-01-31 16:49:33,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 331 transitions, 6571 flow [2024-01-31 16:49:33,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 331 transitions, 6450 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-01-31 16:49:33,560 INFO L231 Difference]: Finished difference. Result has 192 places, 245 transitions, 5468 flow [2024-01-31 16:49:33,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5127, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5468, PETRI_PLACES=192, PETRI_TRANSITIONS=245} [2024-01-31 16:49:33,560 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 155 predicate places. [2024-01-31 16:49:33,560 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 245 transitions, 5468 flow [2024-01-31 16:49:33,561 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) [2024-01-31 16:49:33,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:49:33,561 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:49:33,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-01-31 16:49:33,561 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:49:33,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:49:33,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1815508194, now seen corresponding path program 14 times [2024-01-31 16:49:33,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:49:33,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354493128] [2024-01-31 16:49:33,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:49:33,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:49:33,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:49:33,862 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-31 16:49:33,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:49:33,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354493128] [2024-01-31 16:49:33,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354493128] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:49:33,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:49:33,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:49:33,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207677056] [2024-01-31 16:49:33,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:49:33,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:49:33,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:49:33,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:49:33,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:49:33,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-31 16:49:33,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 245 transitions, 5468 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) [2024-01-31 16:49:33,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:49:33,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-31 16:49:33,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:49:36,320 INFO L124 PetriNetUnfolderBase]: 9125/14786 cut-off events. [2024-01-31 16:49:36,320 INFO L125 PetriNetUnfolderBase]: For 247047/247047 co-relation queries the response was YES. [2024-01-31 16:49:36,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79268 conditions, 14786 events. 9125/14786 cut-off events. For 247047/247047 co-relation queries the response was YES. Maximal size of possible extension queue 924. Compared 113779 event pairs, 2677 based on Foata normal form. 4/14740 useless extension candidates. Maximal degree in co-relation 79188. Up to 5304 conditions per place. [2024-01-31 16:49:36,469 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 226 selfloop transitions, 88 changer transitions 6/324 dead transitions. [2024-01-31 16:49:36,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 324 transitions, 6672 flow [2024-01-31 16:49:36,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:49:36,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:49:36,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 149 transitions. [2024-01-31 16:49:36,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5601503759398496 [2024-01-31 16:49:36,471 INFO L175 Difference]: Start difference. First operand has 192 places, 245 transitions, 5468 flow. Second operand 7 states and 149 transitions. [2024-01-31 16:49:36,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 324 transitions, 6672 flow [2024-01-31 16:49:36,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 324 transitions, 6557 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-01-31 16:49:37,000 INFO L231 Difference]: Finished difference. Result has 197 places, 245 transitions, 5545 flow [2024-01-31 16:49:37,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5353, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5545, PETRI_PLACES=197, PETRI_TRANSITIONS=245} [2024-01-31 16:49:37,001 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 160 predicate places. [2024-01-31 16:49:37,001 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 245 transitions, 5545 flow [2024-01-31 16:49:37,001 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) [2024-01-31 16:49:37,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:49:37,001 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:49:37,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-01-31 16:49:37,002 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:49:37,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:49:37,002 INFO L85 PathProgramCache]: Analyzing trace with hash -475857714, now seen corresponding path program 15 times [2024-01-31 16:49:37,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:49:37,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668282714] [2024-01-31 16:49:37,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:49:37,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:49:37,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:49:37,295 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-31 16:49:37,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:49:37,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668282714] [2024-01-31 16:49:37,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668282714] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:49:37,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:49:37,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:49:37,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242083583] [2024-01-31 16:49:37,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:49:37,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:49:37,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:49:37,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:49:37,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:49:37,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-31 16:49:37,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 245 transitions, 5545 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) [2024-01-31 16:49:37,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:49:37,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-31 16:49:37,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:49:39,683 INFO L124 PetriNetUnfolderBase]: 9106/14738 cut-off events. [2024-01-31 16:49:39,684 INFO L125 PetriNetUnfolderBase]: For 253912/253912 co-relation queries the response was YES. [2024-01-31 16:49:39,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79271 conditions, 14738 events. 9106/14738 cut-off events. For 253912/253912 co-relation queries the response was YES. Maximal size of possible extension queue 918. Compared 113243 event pairs, 2545 based on Foata normal form. 4/14692 useless extension candidates. Maximal degree in co-relation 79189. Up to 5304 conditions per place. [2024-01-31 16:49:39,875 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 226 selfloop transitions, 88 changer transitions 6/324 dead transitions. [2024-01-31 16:49:39,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 324 transitions, 6719 flow [2024-01-31 16:49:39,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:49:39,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:49:39,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 149 transitions. [2024-01-31 16:49:39,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5601503759398496 [2024-01-31 16:49:39,876 INFO L175 Difference]: Start difference. First operand has 197 places, 245 transitions, 5545 flow. Second operand 7 states and 149 transitions. [2024-01-31 16:49:39,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 324 transitions, 6719 flow [2024-01-31 16:49:40,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 324 transitions, 6593 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-31 16:49:40,528 INFO L231 Difference]: Finished difference. Result has 199 places, 244 transitions, 5572 flow [2024-01-31 16:49:40,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5380, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5572, PETRI_PLACES=199, PETRI_TRANSITIONS=244} [2024-01-31 16:49:40,529 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 162 predicate places. [2024-01-31 16:49:40,529 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 244 transitions, 5572 flow [2024-01-31 16:49:40,529 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) [2024-01-31 16:49:40,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:49:40,529 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:49:40,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-01-31 16:49:40,530 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:49:40,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:49:40,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1028632078, now seen corresponding path program 1 times [2024-01-31 16:49:40,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:49:40,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86518607] [2024-01-31 16:49:40,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:49:40,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:49:40,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:49:40,776 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-31 16:49:40,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:49:40,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86518607] [2024-01-31 16:49:40,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86518607] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:49:40,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:49:40,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:49:40,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702794033] [2024-01-31 16:49:40,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:49:40,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:49:40,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:49:40,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:49:40,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:49:40,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-31 16:49:40,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 244 transitions, 5572 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) [2024-01-31 16:49:40,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:49:40,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-31 16:49:40,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:49:43,736 INFO L124 PetriNetUnfolderBase]: 10617/17268 cut-off events. [2024-01-31 16:49:43,736 INFO L125 PetriNetUnfolderBase]: For 277682/277682 co-relation queries the response was YES. [2024-01-31 16:49:43,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89129 conditions, 17268 events. 10617/17268 cut-off events. For 277682/277682 co-relation queries the response was YES. Maximal size of possible extension queue 1043. Compared 135002 event pairs, 2716 based on Foata normal form. 12/17264 useless extension candidates. Maximal degree in co-relation 89046. Up to 8306 conditions per place. [2024-01-31 16:49:43,901 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 263 selfloop transitions, 106 changer transitions 1/374 dead transitions. [2024-01-31 16:49:43,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 374 transitions, 7801 flow [2024-01-31 16:49:43,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:49:43,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:49:43,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 153 transitions. [2024-01-31 16:49:43,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.575187969924812 [2024-01-31 16:49:43,902 INFO L175 Difference]: Start difference. First operand has 199 places, 244 transitions, 5572 flow. Second operand 7 states and 153 transitions. [2024-01-31 16:49:43,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 374 transitions, 7801 flow [2024-01-31 16:49:44,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 374 transitions, 7559 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-01-31 16:49:44,542 INFO L231 Difference]: Finished difference. Result has 203 places, 260 transitions, 6058 flow [2024-01-31 16:49:44,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5392, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6058, PETRI_PLACES=203, PETRI_TRANSITIONS=260} [2024-01-31 16:49:44,543 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 166 predicate places. [2024-01-31 16:49:44,543 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 260 transitions, 6058 flow [2024-01-31 16:49:44,543 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) [2024-01-31 16:49:44,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:49:44,543 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:49:44,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-01-31 16:49:44,544 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:49:44,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:49:44,544 INFO L85 PathProgramCache]: Analyzing trace with hash 2058483782, now seen corresponding path program 2 times [2024-01-31 16:49:44,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:49:44,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619698800] [2024-01-31 16:49:44,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:49:44,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:49:44,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:49:44,800 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-31 16:49:44,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:49:44,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619698800] [2024-01-31 16:49:44,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619698800] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:49:44,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:49:44,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:49:44,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699796594] [2024-01-31 16:49:44,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:49:44,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:49:44,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:49:44,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:49:44,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:49:44,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-31 16:49:44,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 260 transitions, 6058 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) [2024-01-31 16:49:44,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:49:44,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-31 16:49:44,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:49:47,939 INFO L124 PetriNetUnfolderBase]: 10671/17203 cut-off events. [2024-01-31 16:49:47,939 INFO L125 PetriNetUnfolderBase]: For 306949/306982 co-relation queries the response was YES. [2024-01-31 16:49:48,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90707 conditions, 17203 events. 10671/17203 cut-off events. For 306949/306982 co-relation queries the response was YES. Maximal size of possible extension queue 1053. Compared 133680 event pairs, 3959 based on Foata normal form. 8/17185 useless extension candidates. Maximal degree in co-relation 90620. Up to 11283 conditions per place. [2024-01-31 16:49:48,091 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 240 selfloop transitions, 92 changer transitions 9/345 dead transitions. [2024-01-31 16:49:48,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 345 transitions, 7429 flow [2024-01-31 16:49:48,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:49:48,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:49:48,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 149 transitions. [2024-01-31 16:49:48,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5601503759398496 [2024-01-31 16:49:48,092 INFO L175 Difference]: Start difference. First operand has 203 places, 260 transitions, 6058 flow. Second operand 7 states and 149 transitions. [2024-01-31 16:49:48,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 345 transitions, 7429 flow [2024-01-31 16:49:48,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 345 transitions, 7285 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-01-31 16:49:48,704 INFO L231 Difference]: Finished difference. Result has 211 places, 271 transitions, 6392 flow [2024-01-31 16:49:48,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5925, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6392, PETRI_PLACES=211, PETRI_TRANSITIONS=271} [2024-01-31 16:49:48,705 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 174 predicate places. [2024-01-31 16:49:48,705 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 271 transitions, 6392 flow [2024-01-31 16:49:48,705 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) [2024-01-31 16:49:48,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:49:48,705 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:49:48,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-01-31 16:49:48,705 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:49:48,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:49:48,706 INFO L85 PathProgramCache]: Analyzing trace with hash 454516782, now seen corresponding path program 3 times [2024-01-31 16:49:48,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:49:48,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243175460] [2024-01-31 16:49:48,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:49:48,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:49:48,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:49:48,985 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-31 16:49:48,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:49:48,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243175460] [2024-01-31 16:49:48,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243175460] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:49:48,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:49:48,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:49:48,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147900619] [2024-01-31 16:49:48,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:49:48,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:49:48,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:49:48,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:49:48,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:49:48,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-31 16:49:48,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 271 transitions, 6392 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) [2024-01-31 16:49:48,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:49:48,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-31 16:49:48,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:49:54,070 INFO L124 PetriNetUnfolderBase]: 14198/23289 cut-off events. [2024-01-31 16:49:54,070 INFO L125 PetriNetUnfolderBase]: For 355431/355440 co-relation queries the response was YES. [2024-01-31 16:49:54,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116922 conditions, 23289 events. 14198/23289 cut-off events. For 355431/355440 co-relation queries the response was YES. Maximal size of possible extension queue 1390. Compared 191344 event pairs, 2441 based on Foata normal form. 12/23284 useless extension candidates. Maximal degree in co-relation 116831. Up to 10378 conditions per place. [2024-01-31 16:49:54,331 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 360 selfloop transitions, 92 changer transitions 2/458 dead transitions. [2024-01-31 16:49:54,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 458 transitions, 10308 flow [2024-01-31 16:49:54,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:49:54,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:49:54,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 152 transitions. [2024-01-31 16:49:54,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-01-31 16:49:54,332 INFO L175 Difference]: Start difference. First operand has 211 places, 271 transitions, 6392 flow. Second operand 7 states and 152 transitions. [2024-01-31 16:49:54,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 458 transitions, 10308 flow [2024-01-31 16:49:55,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 458 transitions, 10085 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-01-31 16:49:55,339 INFO L231 Difference]: Finished difference. Result has 218 places, 323 transitions, 7825 flow [2024-01-31 16:49:55,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6266, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7825, PETRI_PLACES=218, PETRI_TRANSITIONS=323} [2024-01-31 16:49:55,339 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 181 predicate places. [2024-01-31 16:49:55,339 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 323 transitions, 7825 flow [2024-01-31 16:49:55,339 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) [2024-01-31 16:49:55,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:49:55,340 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:49:55,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-01-31 16:49:55,340 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:49:55,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:49:55,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1180883656, now seen corresponding path program 4 times [2024-01-31 16:49:55,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:49:55,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488711443] [2024-01-31 16:49:55,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:49:55,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:49:55,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:49:55,596 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-31 16:49:55,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:49:55,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488711443] [2024-01-31 16:49:55,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488711443] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:49:55,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:49:55,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:49:55,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217616848] [2024-01-31 16:49:55,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:49:55,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:49:55,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:49:55,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:49:55,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:49:55,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-31 16:49:55,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 323 transitions, 7825 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) [2024-01-31 16:49:55,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:49:55,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-31 16:49:55,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:50:01,199 INFO L124 PetriNetUnfolderBase]: 14192/22810 cut-off events. [2024-01-31 16:50:01,199 INFO L125 PetriNetUnfolderBase]: For 387802/387802 co-relation queries the response was YES. [2024-01-31 16:50:01,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119675 conditions, 22810 events. 14192/22810 cut-off events. For 387802/387802 co-relation queries the response was YES. Maximal size of possible extension queue 1373. Compared 183441 event pairs, 5343 based on Foata normal form. 6/22732 useless extension candidates. Maximal degree in co-relation 119580. Up to 15049 conditions per place. [2024-01-31 16:50:01,443 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 248 selfloop transitions, 142 changer transitions 9/403 dead transitions. [2024-01-31 16:50:01,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 403 transitions, 9086 flow [2024-01-31 16:50:01,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:50:01,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:50:01,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 153 transitions. [2024-01-31 16:50:01,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.575187969924812 [2024-01-31 16:50:01,444 INFO L175 Difference]: Start difference. First operand has 218 places, 323 transitions, 7825 flow. Second operand 7 states and 153 transitions. [2024-01-31 16:50:01,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 403 transitions, 9086 flow [2024-01-31 16:50:02,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 403 transitions, 9004 flow, removed 15 selfloop flow, removed 1 redundant places. [2024-01-31 16:50:02,567 INFO L231 Difference]: Finished difference. Result has 224 places, 324 transitions, 8030 flow [2024-01-31 16:50:02,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7707, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8030, PETRI_PLACES=224, PETRI_TRANSITIONS=324} [2024-01-31 16:50:02,567 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 187 predicate places. [2024-01-31 16:50:02,568 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 324 transitions, 8030 flow [2024-01-31 16:50:02,568 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) [2024-01-31 16:50:02,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:50:02,568 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:50:02,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-01-31 16:50:02,568 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:50:02,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:50:02,569 INFO L85 PathProgramCache]: Analyzing trace with hash -268211430, now seen corresponding path program 5 times [2024-01-31 16:50:02,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:50:02,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765186473] [2024-01-31 16:50:02,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:50:02,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:50:02,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:50:02,863 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-31 16:50:02,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:50:02,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765186473] [2024-01-31 16:50:02,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765186473] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:50:02,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:50:02,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:50:02,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591121557] [2024-01-31 16:50:02,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:50:02,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:50:02,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:50:02,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:50:02,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:50:02,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-01-31 16:50:02,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 324 transitions, 8030 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) [2024-01-31 16:50:02,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:50:02,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-01-31 16:50:02,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand