./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-ext/03_incdec-pthread.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/03_incdec-pthread.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-ext/03_incdec-pthread.i ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/03_incdec-pthread.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 19:01:01,030 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 19:01:01,102 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 19:01:01,106 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 19:01:01,106 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 19:01:01,124 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 19:01:01,125 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 19:01:01,125 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 19:01:01,126 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 19:01:01,130 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 19:01:01,130 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 19:01:01,131 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 19:01:01,131 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 19:01:01,132 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 19:01:01,132 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 19:01:01,133 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 19:01:01,133 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 19:01:01,133 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 19:01:01,134 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 19:01:01,134 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 19:01:01,134 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 19:01:01,134 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 19:01:01,135 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 19:01:01,135 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 19:01:01,135 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 19:01:01,135 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 19:01:01,136 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 19:01:01,136 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 19:01:01,137 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 19:01:01,137 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 19:01:01,138 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 19:01:01,138 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 19:01:01,138 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:01:01,139 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 19:01:01,139 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 19:01:01,139 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 19:01:01,139 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 19:01:01,139 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 19:01:01,139 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 19:01:01,140 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 19:01:01,140 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 19:01:01,140 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 19:01:01,140 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 19:01:01,141 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 19:01:01,368 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 19:01:01,392 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 19:01:01,395 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 19:01:01,396 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 19:01:01,396 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 19:01:01,397 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/03_incdec-pthread.i [2024-02-07 19:01:02,850 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 19:01:03,178 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 19:01:03,183 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/03_incdec-pthread.i [2024-02-07 19:01:03,202 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b726800d/8ca65554de4b41bba4870181598f6e65/FLAGdd5a9839a [2024-02-07 19:01:03,217 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b726800d/8ca65554de4b41bba4870181598f6e65 [2024-02-07 19:01:03,220 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 19:01:03,221 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 19:01:03,221 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/03_incdec-pthread.yml/witness.yml [2024-02-07 19:01:03,314 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 19:01:03,315 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 19:01:03,317 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 19:01:03,317 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 19:01:03,322 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 19:01:03,322 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:01:03" (1/2) ... [2024-02-07 19:01:03,323 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f10bb74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:01:03, skipping insertion in model container [2024-02-07 19:01:03,324 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:01:03" (1/2) ... [2024-02-07 19:01:03,325 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@185401ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:01:03, skipping insertion in model container [2024-02-07 19:01:03,326 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:01:03" (2/2) ... [2024-02-07 19:01:03,326 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f10bb74 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:01:03, skipping insertion in model container [2024-02-07 19:01:03,326 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:01:03" (2/2) ... [2024-02-07 19:01:03,327 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 19:01:03,398 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 19:01:03,400 INFO L76 edCorrectnessWitness]: Location invariant before [L715-L715] (1U <= dec_v) && (dec_v != 0U) [2024-02-07 19:01:03,400 INFO L76 edCorrectnessWitness]: Location invariant before [L713-L713] ((unsigned int )value <= 4294967294U) && ((unsigned int )value != 4294967295U) [2024-02-07 19:01:03,401 INFO L76 edCorrectnessWitness]: Location invariant before [L700-L700] (inc_v <= 4294967294U) && (inc_v != 4294967295U) [2024-02-07 19:01:03,401 INFO L76 edCorrectnessWitness]: Location invariant before [L694-L694] 0U == inc_v [2024-02-07 19:01:03,401 INFO L76 edCorrectnessWitness]: Location invariant before [L699-L699] (1U <= (unsigned int )value) && ((unsigned int )value != 0U) [2024-02-07 19:01:03,402 INFO L76 edCorrectnessWitness]: Location invariant before [L698-L698] (inc_v <= 4294967294U) && (inc_v != 4294967295U) [2024-02-07 19:01:03,402 INFO L76 edCorrectnessWitness]: Location invariant before [L693-L693] 0U == inc_v [2024-02-07 19:01:03,402 INFO L76 edCorrectnessWitness]: Location invariant before [L712-L712] (1U <= dec_v) && (dec_v != 0U) [2024-02-07 19:01:03,403 INFO L76 edCorrectnessWitness]: Location invariant before [L692-L692] (0U == inc_v) && (inc_v == 0U) [2024-02-07 19:01:03,403 INFO L76 edCorrectnessWitness]: Location invariant before [L714-L714] (1U <= dec_v) && (dec_v != 0U) [2024-02-07 19:01:03,403 INFO L76 edCorrectnessWitness]: Location invariant before [L701-L701] (inc_v <= 4294967294U) && (inc_v != 4294967295U) [2024-02-07 19:01:03,403 INFO L76 edCorrectnessWitness]: Location invariant before [L695-L695] (0U == inc_v) && (inc_v == 0U) [2024-02-07 19:01:03,403 INFO L76 edCorrectnessWitness]: Location invariant before [L711-L711] (1U <= (unsigned int )value) && ((unsigned int )value != 0U) [2024-02-07 19:01:03,403 INFO L76 edCorrectnessWitness]: Location invariant before [L697-L697] (((unsigned int )value <= 4294967294U) && (0U == inc_v)) && ((unsigned int )value != 4294967295U) [2024-02-07 19:01:03,444 INFO L181 MainTranslator]: Built tables and reachable declarations [2024-02-07 19:01:03,771 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-ext/03_incdec-pthread.i[30745,30758] [2024-02-07 19:01:03,777 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-ext/03_incdec-pthread.i[31120,31133] [2024-02-07 19:01:03,781 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:01:03,792 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 [2024-02-07 19:01:03,868 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-ext/03_incdec-pthread.i[30745,30758] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 19:01:03,874 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-ext/03_incdec-pthread.i[31120,31133] Start Parsing Local [2024-02-07 19:01:03,877 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:01:03,914 INFO L211 MainTranslator]: Completed translation [2024-02-07 19:01:03,915 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:01:03 WrapperNode [2024-02-07 19:01:03,916 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 19:01:03,917 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 19:01:03,917 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 19:01:03,917 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 19:01:03,924 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:01:03" (1/1) ... [2024-02-07 19:01:03,936 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:01:03" (1/1) ... [2024-02-07 19:01:03,967 INFO L138 Inliner]: procedures = 165, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 113 [2024-02-07 19:01:03,969 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 19:01:03,970 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 19:01:03,971 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 19:01:03,971 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 19:01:03,981 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:01:03" (1/1) ... [2024-02-07 19:01:03,981 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:01:03" (1/1) ... [2024-02-07 19:01:03,986 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:01:03" (1/1) ... [2024-02-07 19:01:04,000 INFO L175 MemorySlicer]: Split 8 memory accesses to 3 slices as follows [2, 5, 1]. 63 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 1 writes are split as follows [0, 0, 1]. [2024-02-07 19:01:04,000 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:01:03" (1/1) ... [2024-02-07 19:01:04,000 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:01:03" (1/1) ... [2024-02-07 19:01:04,009 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:01:03" (1/1) ... [2024-02-07 19:01:04,012 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:01:03" (1/1) ... [2024-02-07 19:01:04,013 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:01:03" (1/1) ... [2024-02-07 19:01:04,015 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:01:03" (1/1) ... [2024-02-07 19:01:04,017 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 19:01:04,031 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 19:01:04,031 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 19:01:04,032 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 19:01:04,033 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:01:03" (1/1) ... [2024-02-07 19:01:04,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:01:04,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:01:04,094 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 19:01:04,138 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 19:01:04,163 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-02-07 19:01:04,164 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-02-07 19:01:04,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 19:01:04,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 19:01:04,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 19:01:04,167 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-07 19:01:04,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 19:01:04,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 19:01:04,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 19:01:04,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 19:01:04,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 19:01:04,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 19:01:04,168 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-07 19:01:04,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 19:01:04,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 19:01:04,174 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 19:01:04,341 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 19:01:04,343 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 19:01:04,643 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 19:01:04,643 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 19:01:04,733 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 19:01:04,734 INFO L320 CfgBuilder]: Removed 1 assume(true) statements. [2024-02-07 19:01:04,734 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:01:04 BoogieIcfgContainer [2024-02-07 19:01:04,734 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 19:01:04,736 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 19:01:04,736 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 19:01:04,739 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 19:01:04,739 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 07:01:03" (1/4) ... [2024-02-07 19:01:04,740 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b86bb87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 07:01:04, skipping insertion in model container [2024-02-07 19:01:04,740 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:01:03" (2/4) ... [2024-02-07 19:01:04,740 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b86bb87 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 07:01:04, skipping insertion in model container [2024-02-07 19:01:04,741 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:01:03" (3/4) ... [2024-02-07 19:01:04,741 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b86bb87 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 07:01:04, skipping insertion in model container [2024-02-07 19:01:04,741 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:01:04" (4/4) ... [2024-02-07 19:01:04,742 INFO L112 eAbstractionObserver]: Analyzing ICFG 03_incdec-pthread.i [2024-02-07 19:01:04,759 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 19:01:04,759 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2024-02-07 19:01:04,759 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 19:01:04,809 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-07 19:01:04,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 72 transitions, 148 flow [2024-02-07 19:01:04,929 INFO L124 PetriNetUnfolderBase]: 5/74 cut-off events. [2024-02-07 19:01:04,931 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:01:04,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 74 events. 5/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 168 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2024-02-07 19:01:04,934 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 72 transitions, 148 flow [2024-02-07 19:01:04,941 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 72 transitions, 148 flow [2024-02-07 19:01:04,953 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 19:01:04,961 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;@361eafc3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 19:01:04,961 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2024-02-07 19:01:04,974 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 19:01:04,974 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-02-07 19:01:04,974 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:01:04,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:01:04,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-02-07 19:01:04,976 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-02-07 19:01:04,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:01:04,981 INFO L85 PathProgramCache]: Analyzing trace with hash 504895306, now seen corresponding path program 1 times [2024-02-07 19:01:04,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:01:04,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621582445] [2024-02-07 19:01:04,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:01:04,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:01:05,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:01:05,471 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 19:01:05,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:01:05,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621582445] [2024-02-07 19:01:05,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621582445] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:01:05,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:01:05,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:01:05,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235735611] [2024-02-07 19:01:05,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:01:05,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:01:05,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:01:05,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:01:05,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:01:05,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 72 [2024-02-07 19:01:05,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 72 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 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 19:01:05,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:01:05,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 72 [2024-02-07 19:01:05,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:01:05,704 INFO L124 PetriNetUnfolderBase]: 59/239 cut-off events. [2024-02-07 19:01:05,704 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:01:05,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 383 conditions, 239 events. 59/239 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1038 event pairs, 42 based on Foata normal form. 15/224 useless extension candidates. Maximal degree in co-relation 371. Up to 120 conditions per place. [2024-02-07 19:01:05,710 INFO L140 encePairwiseOnDemand]: 62/72 looper letters, 31 selfloop transitions, 3 changer transitions 0/68 dead transitions. [2024-02-07 19:01:05,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 68 transitions, 208 flow [2024-02-07 19:01:05,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:01:05,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:01:05,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 144 transitions. [2024-02-07 19:01:05,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-02-07 19:01:05,725 INFO L175 Difference]: Start difference. First operand has 70 places, 72 transitions, 148 flow. Second operand 3 states and 144 transitions. [2024-02-07 19:01:05,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 68 transitions, 208 flow [2024-02-07 19:01:05,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 68 transitions, 208 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 19:01:05,734 INFO L231 Difference]: Finished difference. Result has 68 places, 66 transitions, 147 flow [2024-02-07 19:01:05,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=147, PETRI_PLACES=68, PETRI_TRANSITIONS=66} [2024-02-07 19:01:05,740 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -2 predicate places. [2024-02-07 19:01:05,740 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 66 transitions, 147 flow [2024-02-07 19:01:05,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 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 19:01:05,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:01:05,741 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-02-07 19:01:05,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 19:01:05,742 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-02-07 19:01:05,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:01:05,744 INFO L85 PathProgramCache]: Analyzing trace with hash 504846078, now seen corresponding path program 1 times [2024-02-07 19:01:05,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:01:05,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69439100] [2024-02-07 19:01:05,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:01:05,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:01:05,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 19:01:05,792 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-07 19:01:05,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 19:01:05,834 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-07 19:01:05,835 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-07 19:01:05,836 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (32 of 33 remaining) [2024-02-07 19:01:05,838 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 33 remaining) [2024-02-07 19:01:05,838 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 33 remaining) [2024-02-07 19:01:05,839 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 33 remaining) [2024-02-07 19:01:05,839 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 33 remaining) [2024-02-07 19:01:05,839 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 33 remaining) [2024-02-07 19:01:05,840 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 33 remaining) [2024-02-07 19:01:05,840 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 33 remaining) [2024-02-07 19:01:05,840 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 33 remaining) [2024-02-07 19:01:05,841 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 33 remaining) [2024-02-07 19:01:05,841 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 33 remaining) [2024-02-07 19:01:05,841 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 33 remaining) [2024-02-07 19:01:05,842 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONERROR_FUNCTION (20 of 33 remaining) [2024-02-07 19:01:05,842 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 33 remaining) [2024-02-07 19:01:05,843 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 33 remaining) [2024-02-07 19:01:05,843 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONERROR_FUNCTION (17 of 33 remaining) [2024-02-07 19:01:05,843 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 33 remaining) [2024-02-07 19:01:05,846 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 33 remaining) [2024-02-07 19:01:05,848 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 33 remaining) [2024-02-07 19:01:05,849 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 33 remaining) [2024-02-07 19:01:05,854 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 33 remaining) [2024-02-07 19:01:05,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 33 remaining) [2024-02-07 19:01:05,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 33 remaining) [2024-02-07 19:01:05,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 33 remaining) [2024-02-07 19:01:05,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 33 remaining) [2024-02-07 19:01:05,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 33 remaining) [2024-02-07 19:01:05,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 33 remaining) [2024-02-07 19:01:05,861 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 33 remaining) [2024-02-07 19:01:05,861 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONERROR_FUNCTION (4 of 33 remaining) [2024-02-07 19:01:05,861 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 33 remaining) [2024-02-07 19:01:05,861 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 33 remaining) [2024-02-07 19:01:05,861 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONERROR_FUNCTION (1 of 33 remaining) [2024-02-07 19:01:05,862 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 33 remaining) [2024-02-07 19:01:05,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 19:01:05,862 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2024-02-07 19:01:05,865 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-02-07 19:01:05,866 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-02-07 19:01:05,933 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-07 19:01:05,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 139 transitions, 288 flow [2024-02-07 19:01:05,971 INFO L124 PetriNetUnfolderBase]: 10/144 cut-off events. [2024-02-07 19:01:05,971 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-07 19:01:05,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 144 events. 10/144 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 595 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 135. Up to 3 conditions per place. [2024-02-07 19:01:05,976 INFO L82 GeneralOperation]: Start removeDead. Operand has 134 places, 139 transitions, 288 flow [2024-02-07 19:01:05,978 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 139 transitions, 288 flow [2024-02-07 19:01:05,979 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 19:01:05,979 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;@361eafc3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 19:01:05,979 INFO L358 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2024-02-07 19:01:05,984 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 19:01:05,985 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-02-07 19:01:05,985 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-02-07 19:01:05,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:01:05,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-02-07 19:01:05,986 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 46 more)] === [2024-02-07 19:01:05,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:01:05,986 INFO L85 PathProgramCache]: Analyzing trace with hash 324060138, now seen corresponding path program 1 times [2024-02-07 19:01:05,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:01:05,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319772238] [2024-02-07 19:01:05,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:01:05,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:01:06,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:01:06,075 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 19:01:06,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:01:06,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319772238] [2024-02-07 19:01:06,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319772238] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:01:06,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:01:06,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:01:06,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725884432] [2024-02-07 19:01:06,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:01:06,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:01:06,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:01:06,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:01:06,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:01:06,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 139 [2024-02-07 19:01:06,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 139 transitions, 288 flow. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 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 19:01:06,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:01:06,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 139 [2024-02-07 19:01:06,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:01:06,961 INFO L124 PetriNetUnfolderBase]: 3233/8165 cut-off events. [2024-02-07 19:01:06,961 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2024-02-07 19:01:06,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13278 conditions, 8165 events. 3233/8165 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 76898 event pairs, 2352 based on Foata normal form. 453/7376 useless extension candidates. Maximal degree in co-relation 5324. Up to 4278 conditions per place. [2024-02-07 19:01:07,008 INFO L140 encePairwiseOnDemand]: 127/139 looper letters, 81 selfloop transitions, 3 changer transitions 0/158 dead transitions. [2024-02-07 19:01:07,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 158 transitions, 499 flow [2024-02-07 19:01:07,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:01:07,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:01:07,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 318 transitions. [2024-02-07 19:01:07,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.762589928057554 [2024-02-07 19:01:07,014 INFO L175 Difference]: Start difference. First operand has 134 places, 139 transitions, 288 flow. Second operand 3 states and 318 transitions. [2024-02-07 19:01:07,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 158 transitions, 499 flow [2024-02-07 19:01:07,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 158 transitions, 499 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 19:01:07,018 INFO L231 Difference]: Finished difference. Result has 132 places, 131 transitions, 283 flow [2024-02-07 19:01:07,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=283, PETRI_PLACES=132, PETRI_TRANSITIONS=131} [2024-02-07 19:01:07,019 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, -2 predicate places. [2024-02-07 19:01:07,020 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 131 transitions, 283 flow [2024-02-07 19:01:07,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 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 19:01:07,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:01:07,020 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-02-07 19:01:07,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-07 19:01:07,021 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 46 more)] === [2024-02-07 19:01:07,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:01:07,021 INFO L85 PathProgramCache]: Analyzing trace with hash -132499416, now seen corresponding path program 1 times [2024-02-07 19:01:07,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:01:07,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99909219] [2024-02-07 19:01:07,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:01:07,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:01:07,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 19:01:07,055 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-07 19:01:07,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 19:01:07,064 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-07 19:01:07,065 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-07 19:01:07,065 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (48 of 49 remaining) [2024-02-07 19:01:07,065 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (47 of 49 remaining) [2024-02-07 19:01:07,065 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (46 of 49 remaining) [2024-02-07 19:01:07,065 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (45 of 49 remaining) [2024-02-07 19:01:07,066 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 49 remaining) [2024-02-07 19:01:07,066 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 49 remaining) [2024-02-07 19:01:07,066 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 49 remaining) [2024-02-07 19:01:07,066 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 49 remaining) [2024-02-07 19:01:07,066 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 49 remaining) [2024-02-07 19:01:07,066 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 49 remaining) [2024-02-07 19:01:07,067 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 49 remaining) [2024-02-07 19:01:07,067 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 49 remaining) [2024-02-07 19:01:07,067 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONERROR_FUNCTION (36 of 49 remaining) [2024-02-07 19:01:07,067 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 49 remaining) [2024-02-07 19:01:07,067 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 49 remaining) [2024-02-07 19:01:07,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONERROR_FUNCTION (33 of 49 remaining) [2024-02-07 19:01:07,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 49 remaining) [2024-02-07 19:01:07,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 49 remaining) [2024-02-07 19:01:07,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 49 remaining) [2024-02-07 19:01:07,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 49 remaining) [2024-02-07 19:01:07,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 49 remaining) [2024-02-07 19:01:07,069 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 49 remaining) [2024-02-07 19:01:07,069 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 49 remaining) [2024-02-07 19:01:07,069 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 49 remaining) [2024-02-07 19:01:07,069 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 49 remaining) [2024-02-07 19:01:07,069 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 49 remaining) [2024-02-07 19:01:07,069 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 49 remaining) [2024-02-07 19:01:07,069 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 49 remaining) [2024-02-07 19:01:07,070 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONERROR_FUNCTION (20 of 49 remaining) [2024-02-07 19:01:07,070 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 49 remaining) [2024-02-07 19:01:07,070 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 49 remaining) [2024-02-07 19:01:07,070 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONERROR_FUNCTION (17 of 49 remaining) [2024-02-07 19:01:07,070 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 49 remaining) [2024-02-07 19:01:07,070 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 49 remaining) [2024-02-07 19:01:07,071 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 49 remaining) [2024-02-07 19:01:07,072 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 49 remaining) [2024-02-07 19:01:07,072 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 49 remaining) [2024-02-07 19:01:07,072 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 49 remaining) [2024-02-07 19:01:07,073 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 49 remaining) [2024-02-07 19:01:07,073 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 49 remaining) [2024-02-07 19:01:07,073 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 49 remaining) [2024-02-07 19:01:07,073 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 49 remaining) [2024-02-07 19:01:07,073 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 49 remaining) [2024-02-07 19:01:07,073 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 49 remaining) [2024-02-07 19:01:07,073 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONERROR_FUNCTION (4 of 49 remaining) [2024-02-07 19:01:07,074 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 49 remaining) [2024-02-07 19:01:07,074 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 49 remaining) [2024-02-07 19:01:07,074 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONERROR_FUNCTION (1 of 49 remaining) [2024-02-07 19:01:07,074 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 49 remaining) [2024-02-07 19:01:07,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-07 19:01:07,074 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2024-02-07 19:01:07,075 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-02-07 19:01:07,075 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-02-07 19:01:07,128 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-07 19:01:07,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 206 transitions, 430 flow [2024-02-07 19:01:07,153 INFO L124 PetriNetUnfolderBase]: 15/214 cut-off events. [2024-02-07 19:01:07,153 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-02-07 19:01:07,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 214 events. 15/214 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1075 event pairs, 0 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 201. Up to 4 conditions per place. [2024-02-07 19:01:07,155 INFO L82 GeneralOperation]: Start removeDead. Operand has 198 places, 206 transitions, 430 flow [2024-02-07 19:01:07,159 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 198 places, 206 transitions, 430 flow [2024-02-07 19:01:07,160 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 19:01:07,164 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;@361eafc3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 19:01:07,165 INFO L358 AbstractCegarLoop]: Starting to check reachability of 65 error locations. [2024-02-07 19:01:07,167 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 19:01:07,167 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2024-02-07 19:01:07,167 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-02-07 19:01:07,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:01:07,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-02-07 19:01:07,167 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 62 more)] === [2024-02-07 19:01:07,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:01:07,168 INFO L85 PathProgramCache]: Analyzing trace with hash 2125250984, now seen corresponding path program 1 times [2024-02-07 19:01:07,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:01:07,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073698579] [2024-02-07 19:01:07,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:01:07,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:01:07,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:01:07,230 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 19:01:07,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:01:07,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073698579] [2024-02-07 19:01:07,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073698579] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:01:07,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:01:07,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:01:07,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367431248] [2024-02-07 19:01:07,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:01:07,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:01:07,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:01:07,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:01:07,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:01:07,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 206 [2024-02-07 19:01:07,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 206 transitions, 430 flow. Second operand has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 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 19:01:07,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:01:07,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 206 [2024-02-07 19:01:07,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:01:26,678 INFO L124 PetriNetUnfolderBase]: 114245/227904 cut-off events. [2024-02-07 19:01:26,678 INFO L125 PetriNetUnfolderBase]: For 3664/3664 co-relation queries the response was YES. [2024-02-07 19:01:27,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 384070 conditions, 227904 events. 114245/227904 cut-off events. For 3664/3664 co-relation queries the response was YES. Maximal size of possible extension queue 8321. Compared 2880021 event pairs, 83664 based on Foata normal form. 12750/208542 useless extension candidates. Maximal degree in co-relation 60324. Up to 130602 conditions per place. [2024-02-07 19:01:28,767 INFO L140 encePairwiseOnDemand]: 192/206 looper letters, 131 selfloop transitions, 3 changer transitions 0/248 dead transitions. [2024-02-07 19:01:28,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 248 transitions, 794 flow [2024-02-07 19:01:28,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:01:28,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:01:28,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 492 transitions. [2024-02-07 19:01:28,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7961165048543689 [2024-02-07 19:01:28,771 INFO L175 Difference]: Start difference. First operand has 198 places, 206 transitions, 430 flow. Second operand 3 states and 492 transitions. [2024-02-07 19:01:28,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 248 transitions, 794 flow [2024-02-07 19:01:28,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 248 transitions, 790 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-02-07 19:01:28,779 INFO L231 Difference]: Finished difference. Result has 196 places, 196 transitions, 419 flow [2024-02-07 19:01:28,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=419, PETRI_PLACES=196, PETRI_TRANSITIONS=196} [2024-02-07 19:01:28,780 INFO L281 CegarLoopForPetriNet]: 198 programPoint places, -2 predicate places. [2024-02-07 19:01:28,780 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 196 transitions, 419 flow [2024-02-07 19:01:28,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 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 19:01:28,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:01:28,781 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:01:28,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-07 19:01:28,781 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 62 more)] === [2024-02-07 19:01:28,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:01:28,782 INFO L85 PathProgramCache]: Analyzing trace with hash 2119915844, now seen corresponding path program 1 times [2024-02-07 19:01:28,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:01:28,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942502371] [2024-02-07 19:01:28,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:01:28,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:01:28,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:01:28,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-07 19:01:28,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:01:28,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942502371] [2024-02-07 19:01:28,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942502371] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:01:28,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:01:28,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:01:28,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468860148] [2024-02-07 19:01:28,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:01:28,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:01:28,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:01:28,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:01:28,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:01:28,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 206 [2024-02-07 19:01:28,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 196 transitions, 419 flow. Second operand has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 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 19:01:28,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:01:28,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 206 [2024-02-07 19:01:28,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:01:44,312 INFO L124 PetriNetUnfolderBase]: 119262/233362 cut-off events. [2024-02-07 19:01:44,313 INFO L125 PetriNetUnfolderBase]: For 12495/12495 co-relation queries the response was YES. [2024-02-07 19:01:45,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 406611 conditions, 233362 events. 119262/233362 cut-off events. For 12495/12495 co-relation queries the response was YES. Maximal size of possible extension queue 8308. Compared 2899652 event pairs, 87536 based on Foata normal form. 4761/208224 useless extension candidates. Maximal degree in co-relation 219172. Up to 136400 conditions per place. [2024-02-07 19:01:46,120 INFO L140 encePairwiseOnDemand]: 199/206 looper letters, 132 selfloop transitions, 3 changer transitions 0/245 dead transitions. [2024-02-07 19:01:46,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 245 transitions, 803 flow [2024-02-07 19:01:46,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:01:46,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:01:46,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 479 transitions. [2024-02-07 19:01:46,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7750809061488673 [2024-02-07 19:01:46,122 INFO L175 Difference]: Start difference. First operand has 196 places, 196 transitions, 419 flow. Second operand 3 states and 479 transitions. [2024-02-07 19:01:46,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 245 transitions, 803 flow [2024-02-07 19:01:46,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 245 transitions, 797 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 19:01:46,172 INFO L231 Difference]: Finished difference. Result has 194 places, 193 transitions, 421 flow [2024-02-07 19:01:46,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=421, PETRI_PLACES=194, PETRI_TRANSITIONS=193} [2024-02-07 19:01:46,175 INFO L281 CegarLoopForPetriNet]: 198 programPoint places, -4 predicate places. [2024-02-07 19:01:46,175 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 193 transitions, 421 flow [2024-02-07 19:01:46,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 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 19:01:46,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:01:46,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:01:46,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-07 19:01:46,176 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 62 more)] === [2024-02-07 19:01:46,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:01:46,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1238937601, now seen corresponding path program 1 times [2024-02-07 19:01:46,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:01:46,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192683000] [2024-02-07 19:01:46,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:01:46,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:01:46,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:01:46,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:01:46,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:01:46,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192683000] [2024-02-07 19:01:46,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192683000] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:01:46,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:01:46,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:01:46,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713257333] [2024-02-07 19:01:46,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:01:46,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:01:46,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:01:46,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:01:46,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:01:46,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 206 [2024-02-07 19:01:46,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 193 transitions, 421 flow. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 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 19:01:46,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:01:46,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 206 [2024-02-07 19:01:46,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand