./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/stateful01-2.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/stateful01-2.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7c74aec Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread/stateful01-2.i ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/stateful01-2.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-wip.fs.fix-undeclared-acsl-variable-e7c74ae-m [2024-02-07 18:59:38,847 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 18:59:38,892 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 18:59:38,897 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 18:59:38,898 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 18:59:38,921 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 18:59:38,928 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 18:59:38,929 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 18:59:38,930 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 18:59:38,934 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 18:59:38,934 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 18:59:38,934 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 18:59:38,936 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 18:59:38,937 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 18:59:38,938 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 18:59:38,938 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 18:59:38,938 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 18:59:38,939 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 18:59:38,939 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 18:59:38,939 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 18:59:38,940 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 18:59:38,940 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 18:59:38,941 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 18:59:38,941 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 18:59:38,941 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 18:59:38,942 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 18:59:38,942 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 18:59:38,942 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 18:59:38,943 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 18:59:38,944 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 18:59:38,945 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 18:59:38,945 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 18:59:38,945 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 18:59:38,946 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 18:59:38,946 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 18:59:38,946 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 18:59:38,947 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 18:59:38,947 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 18:59:38,948 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 18:59:38,948 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 18:59:38,948 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 18:59:38,949 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 18:59:38,949 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 18:59:38,949 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 18:59:39,259 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 18:59:39,315 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 18:59:39,318 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 18:59:39,319 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 18:59:39,320 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 18:59:39,321 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/stateful01-2.yml/witness.yml [2024-02-07 18:59:39,426 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 18:59:39,427 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 18:59:39,431 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stateful01-2.i [2024-02-07 18:59:40,861 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 18:59:41,114 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 18:59:41,114 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-2.i [2024-02-07 18:59:41,133 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cefa07b0/94283c2fd05941219df92b5b0858c91e/FLAGcb02d5586 [2024-02-07 18:59:41,155 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cefa07b0/94283c2fd05941219df92b5b0858c91e [2024-02-07 18:59:41,156 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 18:59:41,157 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 18:59:41,161 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 18:59:41,161 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 18:59:41,167 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 18:59:41,168 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 06:59:39" (1/2) ... [2024-02-07 18:59:41,169 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41112f09 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 06:59:41, skipping insertion in model container [2024-02-07 18:59:41,169 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 06:59:39" (1/2) ... [2024-02-07 18:59:41,172 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@775eecf and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 06:59:41, skipping insertion in model container [2024-02-07 18:59:41,173 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 06:59:41" (2/2) ... [2024-02-07 18:59:41,174 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41112f09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:59:41, skipping insertion in model container [2024-02-07 18:59:41,174 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 06:59:41" (2/2) ... [2024-02-07 18:59:41,175 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 18:59:41,209 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 18:59:41,210 INFO L76 edCorrectnessWitness]: Location invariant before [L708-L708] 15 <= data1 [2024-02-07 18:59:41,210 INFO L76 edCorrectnessWitness]: Location invariant before [L701-L701] -2147483647 <= data2 [2024-02-07 18:59:41,211 INFO L76 edCorrectnessWitness]: Location invariant before [L711-L711] data2 <= 2147483641 [2024-02-07 18:59:41,211 INFO L76 edCorrectnessWitness]: Location invariant before [L697-L697] 10 <= data1 [2024-02-07 18:59:41,211 INFO L76 edCorrectnessWitness]: Location invariant before [L725-L725] 10 <= data1 [2024-02-07 18:59:41,211 INFO L76 edCorrectnessWitness]: Location invariant before [L707-L707] 10 <= data1 [2024-02-07 18:59:41,211 INFO L76 edCorrectnessWitness]: Location invariant before [L698-L698] 11 <= data1 [2024-02-07 18:59:41,211 INFO L76 edCorrectnessWitness]: Location invariant before [L721-L721] data2 == 10 [2024-02-07 18:59:41,212 INFO L76 edCorrectnessWitness]: Location invariant before [L720-L720] data1 == 10 [2024-02-07 18:59:41,270 INFO L181 MainTranslator]: Built tables and reachable declarations [2024-02-07 18:59:41,674 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-2.i[30826,30839] [2024-02-07 18:59:41,686 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 18:59:41,703 INFO L206 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 18:59:41,802 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-2.i[30826,30839] [2024-02-07 18:59:41,803 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 18:59:41,845 INFO L211 MainTranslator]: Completed translation [2024-02-07 18:59:41,847 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:59:41 WrapperNode [2024-02-07 18:59:41,848 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 18:59:41,849 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 18:59:41,849 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 18:59:41,849 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 18:59:41,857 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:59:41" (1/1) ... [2024-02-07 18:59:41,896 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:59:41" (1/1) ... [2024-02-07 18:59:41,927 INFO L138 Inliner]: procedures = 169, calls = 38, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 65 [2024-02-07 18:59:41,928 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 18:59:41,930 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 18:59:41,930 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 18:59:41,930 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 18:59:41,943 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:59:41" (1/1) ... [2024-02-07 18:59:41,944 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:59:41" (1/1) ... [2024-02-07 18:59:41,947 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:59:41" (1/1) ... [2024-02-07 18:59:41,970 INFO L175 MemorySlicer]: Split 16 memory accesses to 5 slices as follows [2, 5, 5, 2, 2]. 31 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5, 0, 0]. The 2 writes are split as follows [0, 0, 0, 1, 1]. [2024-02-07 18:59:41,974 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:59:41" (1/1) ... [2024-02-07 18:59:41,974 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:59:41" (1/1) ... [2024-02-07 18:59:41,987 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:59:41" (1/1) ... [2024-02-07 18:59:41,997 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:59:41" (1/1) ... [2024-02-07 18:59:41,999 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:59:41" (1/1) ... [2024-02-07 18:59:42,000 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:59:41" (1/1) ... [2024-02-07 18:59:42,002 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 18:59:42,012 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 18:59:42,012 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 18:59:42,012 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 18:59:42,013 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:59:41" (1/1) ... [2024-02-07 18:59:42,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 18:59:42,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 18:59:42,053 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) [2024-02-07 18:59:42,071 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 [2024-02-07 18:59:42,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-07 18:59:42,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-07 18:59:42,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-07 18:59:42,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-07 18:59:42,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-07 18:59:42,135 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-07 18:59:42,136 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-07 18:59:42,136 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-07 18:59:42,137 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-07 18:59:42,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 18:59:42,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 18:59:42,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 18:59:42,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 18:59:42,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-07 18:59:42,140 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-07 18:59:42,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 18:59:42,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 18:59:42,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 18:59:42,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 18:59:42,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 18:59:42,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 18:59:42,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 18:59:42,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-07 18:59:42,143 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-07 18:59:42,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 18:59:42,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 18:59:42,148 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-07 18:59:42,298 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 18:59:42,300 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 18:59:42,461 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 18:59:42,461 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 18:59:42,578 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 18:59:42,579 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-02-07 18:59:42,579 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 06:59:42 BoogieIcfgContainer [2024-02-07 18:59:42,579 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 18:59:42,581 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 18:59:42,582 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 18:59:42,596 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 18:59:42,596 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 06:59:39" (1/4) ... [2024-02-07 18:59:42,597 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15127636 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 06:59:42, skipping insertion in model container [2024-02-07 18:59:42,597 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 06:59:41" (2/4) ... [2024-02-07 18:59:42,598 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15127636 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 06:59:42, skipping insertion in model container [2024-02-07 18:59:42,598 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:59:41" (3/4) ... [2024-02-07 18:59:42,598 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15127636 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 06:59:42, skipping insertion in model container [2024-02-07 18:59:42,598 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 06:59:42" (4/4) ... [2024-02-07 18:59:42,599 INFO L112 eAbstractionObserver]: Analyzing ICFG stateful01-2.i [2024-02-07 18:59:42,617 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 18:59:42,617 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-02-07 18:59:42,617 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 18:59:42,658 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-02-07 18:59:42,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 52 transitions, 118 flow [2024-02-07 18:59:42,718 INFO L124 PetriNetUnfolderBase]: 1/50 cut-off events. [2024-02-07 18:59:42,718 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-07 18:59:42,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 50 events. 1/50 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 55 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2024-02-07 18:59:42,722 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 52 transitions, 118 flow [2024-02-07 18:59:42,725 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 47 transitions, 106 flow [2024-02-07 18:59:42,734 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 18:59:42,741 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;@3cd1c722, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 18:59:42,742 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-02-07 18:59:42,745 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 18:59:42,746 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-02-07 18:59:42,746 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 18:59:42,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 18:59:42,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-02-07 18:59:42,747 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 15 more)] === [2024-02-07 18:59:42,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 18:59:42,753 INFO L85 PathProgramCache]: Analyzing trace with hash 8450, now seen corresponding path program 1 times [2024-02-07 18:59:42,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 18:59:42,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193529903] [2024-02-07 18:59:42,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 18:59:42,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 18:59:42,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 18:59:43,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 18:59:43,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 18:59:43,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193529903] [2024-02-07 18:59:43,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193529903] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 18:59:43,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 18:59:43,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 18:59:43,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940009757] [2024-02-07 18:59:43,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 18:59:43,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 18:59:43,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 18:59:43,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 18:59:43,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 18:59:43,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 52 [2024-02-07 18:59:43,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 47 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 18:59:43,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 18:59:43,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 52 [2024-02-07 18:59:43,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 18:59:43,287 INFO L124 PetriNetUnfolderBase]: 280/628 cut-off events. [2024-02-07 18:59:43,287 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-02-07 18:59:43,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1176 conditions, 628 events. 280/628 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3147 event pairs, 131 based on Foata normal form. 0/557 useless extension candidates. Maximal degree in co-relation 1066. Up to 492 conditions per place. [2024-02-07 18:59:43,300 INFO L140 encePairwiseOnDemand]: 46/52 looper letters, 33 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2024-02-07 18:59:43,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 53 transitions, 193 flow [2024-02-07 18:59:43,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 18:59:43,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 18:59:43,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 99 transitions. [2024-02-07 18:59:43,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6346153846153846 [2024-02-07 18:59:43,315 INFO L175 Difference]: Start difference. First operand has 54 places, 47 transitions, 106 flow. Second operand 3 states and 99 transitions. [2024-02-07 18:59:43,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 53 transitions, 193 flow [2024-02-07 18:59:43,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 53 transitions, 183 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-07 18:59:43,322 INFO L231 Difference]: Finished difference. Result has 52 places, 48 transitions, 117 flow [2024-02-07 18:59:43,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=52, PETRI_TRANSITIONS=48} [2024-02-07 18:59:43,328 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -2 predicate places. [2024-02-07 18:59:43,328 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 48 transitions, 117 flow [2024-02-07 18:59:43,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 18:59:43,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 18:59:43,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-02-07 18:59:43,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 18:59:43,330 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 15 more)] === [2024-02-07 18:59:43,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 18:59:43,330 INFO L85 PathProgramCache]: Analyzing trace with hash 262202, now seen corresponding path program 1 times [2024-02-07 18:59:43,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 18:59:43,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069161700] [2024-02-07 18:59:43,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 18:59:43,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 18:59:43,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 18:59:43,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 18:59:43,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 18:59:43,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069161700] [2024-02-07 18:59:43,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069161700] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 18:59:43,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 18:59:43,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 18:59:43,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523236763] [2024-02-07 18:59:43,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 18:59:43,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 18:59:43,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 18:59:43,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 18:59:43,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 18:59:43,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 52 [2024-02-07 18:59:43,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 48 transitions, 117 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 18:59:43,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 18:59:43,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 52 [2024-02-07 18:59:43,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 18:59:43,508 INFO L124 PetriNetUnfolderBase]: 240/513 cut-off events. [2024-02-07 18:59:43,509 INFO L125 PetriNetUnfolderBase]: For 43/63 co-relation queries the response was YES. [2024-02-07 18:59:43,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1024 conditions, 513 events. 240/513 cut-off events. For 43/63 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2423 event pairs, 90 based on Foata normal form. 0/488 useless extension candidates. Maximal degree in co-relation 768. Up to 317 conditions per place. [2024-02-07 18:59:43,514 INFO L140 encePairwiseOnDemand]: 48/52 looper letters, 38 selfloop transitions, 3 changer transitions 0/60 dead transitions. [2024-02-07 18:59:43,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 60 transitions, 228 flow [2024-02-07 18:59:43,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 18:59:43,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 18:59:43,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 109 transitions. [2024-02-07 18:59:43,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6987179487179487 [2024-02-07 18:59:43,517 INFO L175 Difference]: Start difference. First operand has 52 places, 48 transitions, 117 flow. Second operand 3 states and 109 transitions. [2024-02-07 18:59:43,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 60 transitions, 228 flow [2024-02-07 18:59:43,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 60 transitions, 225 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 18:59:43,519 INFO L231 Difference]: Finished difference. Result has 53 places, 49 transitions, 129 flow [2024-02-07 18:59:43,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=53, PETRI_TRANSITIONS=49} [2024-02-07 18:59:43,520 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -1 predicate places. [2024-02-07 18:59:43,521 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 129 flow [2024-02-07 18:59:43,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 18:59:43,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 18:59:43,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 18:59:43,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 18:59:43,522 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 15 more)] === [2024-02-07 18:59:43,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 18:59:43,522 INFO L85 PathProgramCache]: Analyzing trace with hash 405153790, now seen corresponding path program 1 times [2024-02-07 18:59:43,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 18:59:43,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024939054] [2024-02-07 18:59:43,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 18:59:43,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 18:59:43,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 18:59:43,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 18:59:43,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 18:59:43,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024939054] [2024-02-07 18:59:43,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024939054] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 18:59:43,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 18:59:43,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 18:59:43,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861253981] [2024-02-07 18:59:43,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 18:59:43,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 18:59:43,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 18:59:43,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 18:59:43,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-07 18:59:43,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 52 [2024-02-07 18:59:43,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 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) [2024-02-07 18:59:43,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 18:59:43,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 52 [2024-02-07 18:59:43,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 18:59:43,713 INFO L124 PetriNetUnfolderBase]: 240/550 cut-off events. [2024-02-07 18:59:43,713 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-02-07 18:59:43,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1116 conditions, 550 events. 240/550 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2587 event pairs, 99 based on Foata normal form. 0/511 useless extension candidates. Maximal degree in co-relation 429. Up to 421 conditions per place. [2024-02-07 18:59:43,717 INFO L140 encePairwiseOnDemand]: 45/52 looper letters, 33 selfloop transitions, 3 changer transitions 0/50 dead transitions. [2024-02-07 18:59:43,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 50 transitions, 200 flow [2024-02-07 18:59:43,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 18:59:43,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 18:59:43,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2024-02-07 18:59:43,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5288461538461539 [2024-02-07 18:59:43,720 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 129 flow. Second operand 4 states and 110 transitions. [2024-02-07 18:59:43,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 50 transitions, 200 flow [2024-02-07 18:59:43,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 50 transitions, 197 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 18:59:43,722 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 120 flow [2024-02-07 18:59:43,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2024-02-07 18:59:43,723 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -3 predicate places. [2024-02-07 18:59:43,723 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 120 flow [2024-02-07 18:59:43,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 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) [2024-02-07 18:59:43,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 18:59:43,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 18:59:43,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-07 18:59:43,724 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 15 more)] === [2024-02-07 18:59:43,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 18:59:43,725 INFO L85 PathProgramCache]: Analyzing trace with hash -100864930, now seen corresponding path program 1 times [2024-02-07 18:59:43,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 18:59:43,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381780901] [2024-02-07 18:59:43,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 18:59:43,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 18:59:43,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 18:59:43,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 18:59:43,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 18:59:43,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381780901] [2024-02-07 18:59:43,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381780901] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 18:59:43,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 18:59:43,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 18:59:43,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808688812] [2024-02-07 18:59:43,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 18:59:43,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 18:59:43,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 18:59:43,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 18:59:43,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-07 18:59:43,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 52 [2024-02-07 18:59:43,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 120 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 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) [2024-02-07 18:59:43,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 18:59:43,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 52 [2024-02-07 18:59:43,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 18:59:43,907 INFO L124 PetriNetUnfolderBase]: 240/532 cut-off events. [2024-02-07 18:59:43,907 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-02-07 18:59:43,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1083 conditions, 532 events. 240/532 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2439 event pairs, 51 based on Foata normal form. 0/501 useless extension candidates. Maximal degree in co-relation 820. Up to 331 conditions per place. [2024-02-07 18:59:43,911 INFO L140 encePairwiseOnDemand]: 49/52 looper letters, 38 selfloop transitions, 3 changer transitions 0/54 dead transitions. [2024-02-07 18:59:43,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 54 transitions, 223 flow [2024-02-07 18:59:43,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 18:59:43,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 18:59:43,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2024-02-07 18:59:43,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5336538461538461 [2024-02-07 18:59:43,913 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 120 flow. Second operand 4 states and 111 transitions. [2024-02-07 18:59:43,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 54 transitions, 223 flow [2024-02-07 18:59:43,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 54 transitions, 219 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 18:59:43,915 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 120 flow [2024-02-07 18:59:43,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2024-02-07 18:59:43,916 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -3 predicate places. [2024-02-07 18:59:43,916 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 120 flow [2024-02-07 18:59:43,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 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) [2024-02-07 18:59:43,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 18:59:43,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 18:59:43,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-07 18:59:43,917 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 15 more)] === [2024-02-07 18:59:43,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 18:59:43,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1589820075, now seen corresponding path program 1 times [2024-02-07 18:59:43,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 18:59:43,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008294127] [2024-02-07 18:59:43,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 18:59:43,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 18:59:43,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 18:59:43,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 18:59:43,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 18:59:43,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008294127] [2024-02-07 18:59:43,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008294127] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 18:59:43,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 18:59:43,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 18:59:43,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203209966] [2024-02-07 18:59:43,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 18:59:43,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 18:59:43,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 18:59:43,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 18:59:43,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-07 18:59:43,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 52 [2024-02-07 18:59:43,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 120 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 18:59:43,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 18:59:43,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 52 [2024-02-07 18:59:43,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 18:59:44,086 INFO L124 PetriNetUnfolderBase]: 221/469 cut-off events. [2024-02-07 18:59:44,086 INFO L125 PetriNetUnfolderBase]: For 105/105 co-relation queries the response was YES. [2024-02-07 18:59:44,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1001 conditions, 469 events. 221/469 cut-off events. For 105/105 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2172 event pairs, 68 based on Foata normal form. 14/465 useless extension candidates. Maximal degree in co-relation 738. Up to 144 conditions per place. [2024-02-07 18:59:44,090 INFO L140 encePairwiseOnDemand]: 47/52 looper letters, 46 selfloop transitions, 5 changer transitions 0/65 dead transitions. [2024-02-07 18:59:44,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 65 transitions, 276 flow [2024-02-07 18:59:44,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 18:59:44,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 18:59:44,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 142 transitions. [2024-02-07 18:59:44,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6826923076923077 [2024-02-07 18:59:44,092 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 120 flow. Second operand 4 states and 142 transitions. [2024-02-07 18:59:44,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 65 transitions, 276 flow [2024-02-07 18:59:44,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 65 transitions, 271 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 18:59:44,094 INFO L231 Difference]: Finished difference. Result has 53 places, 44 transitions, 131 flow [2024-02-07 18:59:44,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=131, PETRI_PLACES=53, PETRI_TRANSITIONS=44} [2024-02-07 18:59:44,095 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -1 predicate places. [2024-02-07 18:59:44,095 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 131 flow [2024-02-07 18:59:44,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 18:59:44,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 18:59:44,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 18:59:44,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-07 18:59:44,096 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 15 more)] === [2024-02-07 18:59:44,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 18:59:44,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1295130266, now seen corresponding path program 1 times [2024-02-07 18:59:44,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 18:59:44,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941460508] [2024-02-07 18:59:44,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 18:59:44,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 18:59:44,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 18:59:44,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 18:59:44,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 18:59:44,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941460508] [2024-02-07 18:59:44,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941460508] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 18:59:44,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 18:59:44,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 18:59:44,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855587673] [2024-02-07 18:59:44,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 18:59:44,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 18:59:44,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 18:59:44,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 18:59:44,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-07 18:59:44,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 52 [2024-02-07 18:59:44,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 18:59:44,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 18:59:44,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 52 [2024-02-07 18:59:44,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 18:59:44,290 INFO L124 PetriNetUnfolderBase]: 230/501 cut-off events. [2024-02-07 18:59:44,291 INFO L125 PetriNetUnfolderBase]: For 181/181 co-relation queries the response was YES. [2024-02-07 18:59:44,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1110 conditions, 501 events. 230/501 cut-off events. For 181/181 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2328 event pairs, 91 based on Foata normal form. 20/503 useless extension candidates. Maximal degree in co-relation 864. Up to 176 conditions per place. [2024-02-07 18:59:44,294 INFO L140 encePairwiseOnDemand]: 46/52 looper letters, 45 selfloop transitions, 7 changer transitions 0/66 dead transitions. [2024-02-07 18:59:44,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 66 transitions, 289 flow [2024-02-07 18:59:44,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 18:59:44,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 18:59:44,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 148 transitions. [2024-02-07 18:59:44,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7115384615384616 [2024-02-07 18:59:44,296 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 131 flow. Second operand 4 states and 148 transitions. [2024-02-07 18:59:44,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 66 transitions, 289 flow [2024-02-07 18:59:44,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 66 transitions, 280 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-02-07 18:59:44,299 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 155 flow [2024-02-07 18:59:44,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=155, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2024-02-07 18:59:44,300 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 2 predicate places. [2024-02-07 18:59:44,301 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 155 flow [2024-02-07 18:59:44,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 18:59:44,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 18:59:44,301 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] [2024-02-07 18:59:44,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-07 18:59:44,302 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 15 more)] === [2024-02-07 18:59:44,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 18:59:44,302 INFO L85 PathProgramCache]: Analyzing trace with hash 2049374301, now seen corresponding path program 1 times [2024-02-07 18:59:44,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 18:59:44,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909159209] [2024-02-07 18:59:44,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 18:59:44,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 18:59:44,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 18:59:44,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 18:59:44,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 18:59:44,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909159209] [2024-02-07 18:59:44,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909159209] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 18:59:44,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 18:59:44,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 18:59:44,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940610348] [2024-02-07 18:59:44,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 18:59:44,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 18:59:44,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 18:59:44,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 18:59:44,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 18:59:44,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 52 [2024-02-07 18:59:44,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 18:59:44,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 18:59:44,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 52 [2024-02-07 18:59:44,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 18:59:44,467 INFO L124 PetriNetUnfolderBase]: 115/346 cut-off events. [2024-02-07 18:59:44,467 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2024-02-07 18:59:44,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 748 conditions, 346 events. 115/346 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1391 event pairs, 45 based on Foata normal form. 32/374 useless extension candidates. Maximal degree in co-relation 533. Up to 144 conditions per place. [2024-02-07 18:59:44,470 INFO L140 encePairwiseOnDemand]: 44/52 looper letters, 27 selfloop transitions, 8 changer transitions 0/51 dead transitions. [2024-02-07 18:59:44,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 51 transitions, 234 flow [2024-02-07 18:59:44,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 18:59:44,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 18:59:44,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2024-02-07 18:59:44,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7243589743589743 [2024-02-07 18:59:44,471 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 155 flow. Second operand 3 states and 113 transitions. [2024-02-07 18:59:44,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 51 transitions, 234 flow [2024-02-07 18:59:44,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 51 transitions, 215 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-02-07 18:59:44,474 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 145 flow [2024-02-07 18:59:44,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=145, PETRI_PLACES=54, PETRI_TRANSITIONS=44} [2024-02-07 18:59:44,475 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2024-02-07 18:59:44,476 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 145 flow [2024-02-07 18:59:44,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 18:59:44,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 18:59:44,476 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] [2024-02-07 18:59:44,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-07 18:59:44,477 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 15 more)] === [2024-02-07 18:59:44,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 18:59:44,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1700867767, now seen corresponding path program 1 times [2024-02-07 18:59:44,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 18:59:44,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391302458] [2024-02-07 18:59:44,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 18:59:44,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 18:59:44,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 18:59:44,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 18:59:44,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 18:59:44,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391302458] [2024-02-07 18:59:44,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391302458] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 18:59:44,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 18:59:44,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 18:59:44,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642913928] [2024-02-07 18:59:44,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 18:59:44,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 18:59:44,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 18:59:44,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 18:59:44,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-02-07 18:59:44,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 52 [2024-02-07 18:59:44,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 44 transitions, 145 flow. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 18:59:44,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 18:59:44,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 52 [2024-02-07 18:59:44,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 18:59:44,650 INFO L124 PetriNetUnfolderBase]: 119/329 cut-off events. [2024-02-07 18:59:44,651 INFO L125 PetriNetUnfolderBase]: For 126/126 co-relation queries the response was YES. [2024-02-07 18:59:44,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 754 conditions, 329 events. 119/329 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1281 event pairs, 49 based on Foata normal form. 6/325 useless extension candidates. Maximal degree in co-relation 542. Up to 100 conditions per place. [2024-02-07 18:59:44,654 INFO L140 encePairwiseOnDemand]: 46/52 looper letters, 43 selfloop transitions, 7 changer transitions 0/64 dead transitions. [2024-02-07 18:59:44,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 64 transitions, 305 flow [2024-02-07 18:59:44,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 18:59:44,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 18:59:44,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 169 transitions. [2024-02-07 18:59:44,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-02-07 18:59:44,656 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 145 flow. Second operand 5 states and 169 transitions. [2024-02-07 18:59:44,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 64 transitions, 305 flow [2024-02-07 18:59:44,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 64 transitions, 285 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 18:59:44,658 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 141 flow [2024-02-07 18:59:44,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=141, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2024-02-07 18:59:44,659 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 1 predicate places. [2024-02-07 18:59:44,659 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 141 flow [2024-02-07 18:59:44,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 18:59:44,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 18:59:44,660 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] [2024-02-07 18:59:44,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-07 18:59:44,660 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 15 more)] === [2024-02-07 18:59:44,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 18:59:44,661 INFO L85 PathProgramCache]: Analyzing trace with hash 2104000256, now seen corresponding path program 1 times [2024-02-07 18:59:44,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 18:59:44,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148968909] [2024-02-07 18:59:44,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 18:59:44,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 18:59:44,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 18:59:44,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 18:59:44,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 18:59:44,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148968909] [2024-02-07 18:59:44,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148968909] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 18:59:44,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 18:59:44,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 18:59:44,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722626316] [2024-02-07 18:59:44,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 18:59:44,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 18:59:44,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 18:59:44,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 18:59:44,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-02-07 18:59:44,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 52 [2024-02-07 18:59:44,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 141 flow. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 18:59:44,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 18:59:44,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 52 [2024-02-07 18:59:44,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 18:59:44,841 INFO L124 PetriNetUnfolderBase]: 115/319 cut-off events. [2024-02-07 18:59:44,842 INFO L125 PetriNetUnfolderBase]: For 118/118 co-relation queries the response was YES. [2024-02-07 18:59:44,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 709 conditions, 319 events. 115/319 cut-off events. For 118/118 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1262 event pairs, 65 based on Foata normal form. 4/313 useless extension candidates. Maximal degree in co-relation 508. Up to 145 conditions per place. [2024-02-07 18:59:44,845 INFO L140 encePairwiseOnDemand]: 48/52 looper letters, 39 selfloop transitions, 4 changer transitions 0/57 dead transitions. [2024-02-07 18:59:44,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 57 transitions, 260 flow [2024-02-07 18:59:44,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 18:59:44,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 18:59:44,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2024-02-07 18:59:44,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6192307692307693 [2024-02-07 18:59:44,847 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 141 flow. Second operand 5 states and 161 transitions. [2024-02-07 18:59:44,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 57 transitions, 260 flow [2024-02-07 18:59:44,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 57 transitions, 244 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-02-07 18:59:44,849 INFO L231 Difference]: Finished difference. Result has 53 places, 42 transitions, 127 flow [2024-02-07 18:59:44,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=127, PETRI_PLACES=53, PETRI_TRANSITIONS=42} [2024-02-07 18:59:44,850 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -1 predicate places. [2024-02-07 18:59:44,850 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 42 transitions, 127 flow [2024-02-07 18:59:44,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 18:59:44,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 18:59:44,850 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 18:59:44,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-02-07 18:59:44,851 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 15 more)] === [2024-02-07 18:59:44,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 18:59:44,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1260275821, now seen corresponding path program 1 times [2024-02-07 18:59:44,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 18:59:44,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068388223] [2024-02-07 18:59:44,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 18:59:44,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 18:59:44,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 18:59:44,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 18:59:44,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 18:59:44,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068388223] [2024-02-07 18:59:44,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068388223] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 18:59:44,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 18:59:44,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 18:59:44,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507304741] [2024-02-07 18:59:44,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 18:59:44,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 18:59:44,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 18:59:44,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 18:59:44,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-07 18:59:44,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 52 [2024-02-07 18:59:44,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 42 transitions, 127 flow. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 18:59:44,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 18:59:44,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 52 [2024-02-07 18:59:44,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 18:59:45,083 INFO L124 PetriNetUnfolderBase]: 115/319 cut-off events. [2024-02-07 18:59:45,084 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-02-07 18:59:45,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 698 conditions, 319 events. 115/319 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1243 event pairs, 49 based on Foata normal form. 1/310 useless extension candidates. Maximal degree in co-relation 499. Up to 80 conditions per place. [2024-02-07 18:59:45,086 INFO L140 encePairwiseOnDemand]: 48/52 looper letters, 29 selfloop transitions, 2 changer transitions 21/65 dead transitions. [2024-02-07 18:59:45,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 65 transitions, 294 flow [2024-02-07 18:59:45,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 18:59:45,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 18:59:45,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2024-02-07 18:59:45,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6192307692307693 [2024-02-07 18:59:45,087 INFO L175 Difference]: Start difference. First operand has 53 places, 42 transitions, 127 flow. Second operand 5 states and 161 transitions. [2024-02-07 18:59:45,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 65 transitions, 294 flow [2024-02-07 18:59:45,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 65 transitions, 290 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 18:59:45,089 INFO L231 Difference]: Finished difference. Result has 56 places, 40 transitions, 121 flow [2024-02-07 18:59:45,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=121, PETRI_PLACES=56, PETRI_TRANSITIONS=40} [2024-02-07 18:59:45,090 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 2 predicate places. [2024-02-07 18:59:45,090 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 40 transitions, 121 flow [2024-02-07 18:59:45,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 18:59:45,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 18:59:45,091 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 18:59:45,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-02-07 18:59:45,091 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 15 more)] === [2024-02-07 18:59:45,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 18:59:45,092 INFO L85 PathProgramCache]: Analyzing trace with hash 90083313, now seen corresponding path program 2 times [2024-02-07 18:59:45,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 18:59:45,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155824693] [2024-02-07 18:59:45,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 18:59:45,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 18:59:45,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 18:59:45,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 18:59:45,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 18:59:45,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155824693] [2024-02-07 18:59:45,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155824693] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 18:59:45,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 18:59:45,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 18:59:45,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40645510] [2024-02-07 18:59:45,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 18:59:45,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 18:59:45,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 18:59:45,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 18:59:45,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-07 18:59:45,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 52 [2024-02-07 18:59:45,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 40 transitions, 121 flow. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 18:59:45,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 18:59:45,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 52 [2024-02-07 18:59:45,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 18:59:45,274 INFO L124 PetriNetUnfolderBase]: 61/182 cut-off events. [2024-02-07 18:59:45,275 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2024-02-07 18:59:45,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 407 conditions, 182 events. 61/182 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 547 event pairs, 29 based on Foata normal form. 1/173 useless extension candidates. Maximal degree in co-relation 401. Up to 69 conditions per place. [2024-02-07 18:59:45,276 INFO L140 encePairwiseOnDemand]: 48/52 looper letters, 0 selfloop transitions, 0 changer transitions 45/45 dead transitions. [2024-02-07 18:59:45,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 45 transitions, 200 flow [2024-02-07 18:59:45,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 18:59:45,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 18:59:45,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 142 transitions. [2024-02-07 18:59:45,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5461538461538461 [2024-02-07 18:59:45,277 INFO L175 Difference]: Start difference. First operand has 56 places, 40 transitions, 121 flow. Second operand 5 states and 142 transitions. [2024-02-07 18:59:45,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 45 transitions, 200 flow [2024-02-07 18:59:45,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 45 transitions, 190 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-07 18:59:45,278 INFO L231 Difference]: Finished difference. Result has 51 places, 0 transitions, 0 flow [2024-02-07 18:59:45,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=51, PETRI_TRANSITIONS=0} [2024-02-07 18:59:45,279 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -3 predicate places. [2024-02-07 18:59:45,279 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 0 transitions, 0 flow [2024-02-07 18:59:45,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 18:59:45,282 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 18 remaining) [2024-02-07 18:59:45,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 18 remaining) [2024-02-07 18:59:45,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 18 remaining) [2024-02-07 18:59:45,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 18 remaining) [2024-02-07 18:59:45,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 18 remaining) [2024-02-07 18:59:45,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 18 remaining) [2024-02-07 18:59:45,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 18 remaining) [2024-02-07 18:59:45,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 18 remaining) [2024-02-07 18:59:45,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 18 remaining) [2024-02-07 18:59:45,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (8 of 18 remaining) [2024-02-07 18:59:45,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 18 remaining) [2024-02-07 18:59:45,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 18 remaining) [2024-02-07 18:59:45,285 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 18 remaining) [2024-02-07 18:59:45,285 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 18 remaining) [2024-02-07 18:59:45,285 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 18 remaining) [2024-02-07 18:59:45,285 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 18 remaining) [2024-02-07 18:59:45,285 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 18 remaining) [2024-02-07 18:59:45,286 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 18 remaining) [2024-02-07 18:59:45,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-02-07 18:59:45,286 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 18:59:45,291 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-02-07 18:59:45,291 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-02-07 18:59:45,295 INFO L503 ceAbstractionStarter]: Automizer considered 9 witness invariants [2024-02-07 18:59:45,295 INFO L504 ceAbstractionStarter]: WitnessConsidered=9 [2024-02-07 18:59:45,296 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.02 06:59:45 BasicIcfg [2024-02-07 18:59:45,296 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-02-07 18:59:45,297 INFO L158 Benchmark]: Toolchain (without parser) took 4140.23ms. Allocated memory was 142.6MB in the beginning and 272.6MB in the end (delta: 130.0MB). Free memory was 81.5MB in the beginning and 115.5MB in the end (delta: -34.0MB). Peak memory consumption was 97.8MB. Max. memory is 16.1GB. [2024-02-07 18:59:45,297 INFO L158 Benchmark]: Witness Parser took 0.17ms. Allocated memory is still 142.6MB. Free memory is still 117.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 18:59:45,297 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 142.6MB. Free memory is still 114.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 18:59:45,298 INFO L158 Benchmark]: CACSL2BoogieTranslator took 687.22ms. Allocated memory was 142.6MB in the beginning and 213.9MB in the end (delta: 71.3MB). Free memory was 81.3MB in the beginning and 172.3MB in the end (delta: -91.0MB). Peak memory consumption was 20.0MB. Max. memory is 16.1GB. [2024-02-07 18:59:45,298 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.63ms. Allocated memory is still 213.9MB. Free memory was 172.3MB in the beginning and 170.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-07 18:59:45,298 INFO L158 Benchmark]: Boogie Preprocessor took 81.31ms. Allocated memory is still 213.9MB. Free memory was 170.2MB in the beginning and 168.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-07 18:59:45,298 INFO L158 Benchmark]: RCFGBuilder took 567.87ms. Allocated memory is still 213.9MB. Free memory was 168.1MB in the beginning and 137.7MB in the end (delta: 30.4MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-02-07 18:59:45,299 INFO L158 Benchmark]: TraceAbstraction took 2714.97ms. Allocated memory was 213.9MB in the beginning and 272.6MB in the end (delta: 58.7MB). Free memory was 136.6MB in the beginning and 115.5MB in the end (delta: 21.1MB). Peak memory consumption was 79.9MB. Max. memory is 16.1GB. [2024-02-07 18:59:45,300 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.17ms. Allocated memory is still 142.6MB. Free memory is still 117.6MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.24ms. Allocated memory is still 142.6MB. Free memory is still 114.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 687.22ms. Allocated memory was 142.6MB in the beginning and 213.9MB in the end (delta: 71.3MB). Free memory was 81.3MB in the beginning and 172.3MB in the end (delta: -91.0MB). Peak memory consumption was 20.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 79.63ms. Allocated memory is still 213.9MB. Free memory was 172.3MB in the beginning and 170.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 81.31ms. Allocated memory is still 213.9MB. Free memory was 170.2MB in the beginning and 168.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 567.87ms. Allocated memory is still 213.9MB. Free memory was 168.1MB in the beginning and 137.7MB in the end (delta: 30.4MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2714.97ms. Allocated memory was 213.9MB in the beginning and 272.6MB in the end (delta: 58.7MB). Free memory was 136.6MB in the beginning and 115.5MB in the end (delta: 21.1MB). Peak memory consumption was 79.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 697]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 698]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 701]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 707]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 708]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 711]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 720]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 721]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 725]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 727]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 86 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.6s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 448 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 330 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 54 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 962 IncrementalHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 54 mSolverCounterUnsat, 8 mSDtfsCounter, 962 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=155occurred in iteration=6, InterpolantAutomatonStates: 45, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 210 NumberOfCodeBlocks, 210 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 199 ConstructedInterpolants, 0 QuantifiedInterpolants, 555 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-02-07 18:59:45,326 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE