./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/popl20-three-array-max.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 80b1b132 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/popl20-three-array-max.wvr.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-?-80b1b13-m [2024-01-31 17:19:05,282 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 17:19:05,327 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 17:19:05,341 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 17:19:05,342 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 17:19:05,359 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 17:19:05,360 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 17:19:05,360 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 17:19:05,360 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 17:19:05,363 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 17:19:05,364 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 17:19:05,364 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 17:19:05,365 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 17:19:05,365 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 17:19:05,366 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 17:19:05,366 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 17:19:05,366 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 17:19:05,366 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 17:19:05,367 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 17:19:05,367 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 17:19:05,367 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 17:19:05,367 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 17:19:05,368 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 17:19:05,368 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 17:19:05,368 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 17:19:05,368 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 17:19:05,368 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 17:19:05,369 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 17:19:05,369 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 17:19:05,369 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 17:19:05,370 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 17:19:05,370 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 17:19:05,370 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:19:05,371 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 17:19:05,371 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 17:19:05,371 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 17:19:05,371 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 17:19:05,371 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 17:19:05,371 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 17:19:05,372 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 17:19:05,372 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 17:19:05,372 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 17:19:05,372 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 17:19:05,372 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 17:19:05,592 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 17:19:05,614 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 17:19:05,616 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 17:19:05,617 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 17:19:05,617 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 17:19:05,618 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c [2024-01-31 17:19:06,681 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 17:19:06,902 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 17:19:06,903 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c [2024-01-31 17:19:06,911 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3936bfa95/0cc138ce09d841e18062d7e1a8b7c31f/FLAG562a12c01 [2024-01-31 17:19:06,924 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3936bfa95/0cc138ce09d841e18062d7e1a8b7c31f [2024-01-31 17:19:06,927 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 17:19:06,927 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 17:19:06,928 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/popl20-three-array-max.wvr.yml/witness.yml [2024-01-31 17:19:07,062 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 17:19:07,063 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 17:19:07,067 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 17:19:07,067 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 17:19:07,072 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 17:19:07,072 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:19:06" (1/2) ... [2024-01-31 17:19:07,075 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d112b5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:19:07, skipping insertion in model container [2024-01-31 17:19:07,075 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:19:06" (1/2) ... [2024-01-31 17:19:07,077 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4ce1e164 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:19:07, skipping insertion in model container [2024-01-31 17:19:07,077 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:19:07" (2/2) ... [2024-01-31 17:19:07,078 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d112b5a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:19:07, skipping insertion in model container [2024-01-31 17:19:07,078 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:19:07" (2/2) ... [2024-01-31 17:19:07,078 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 17:19:07,141 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 17:19:07,142 INFO L98 nessWitnessExtractor]: Location invariant after [L75-L75] ((1 <= p) && ((unsigned long )_argptr == 0UL)) && ((((((((1 == i && i == 1) || ((1 <= i && i <= 2147483646) && i != 0)) || (1 <= i && i <= 7)) || (1 <= i && i <= 6)) || (1 <= i && i <= 5)) || (((0 <= i && 1 <= i) && i <= 4) && i <= 65535)) || (((0 <= i && 1 <= i) && i <= 3) && i <= 255)) || (((((0 <= i && 1 <= i) && i <= 2) && i <= 127) && i != 0) && (i == 1 || i == 2))) [2024-01-31 17:19:07,142 INFO L98 nessWitnessExtractor]: Location invariant after [L72-L72] (unsigned long )_argptr == 0UL [2024-01-31 17:19:07,161 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 17:19:07,310 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c[2862,2875] [2024-01-31 17:19:07,317 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:19:07,325 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 17:19:07,337 WARN L424 MainDispatcher]: Unable to annotate int with a witness entry [2024-01-31 17:19:07,337 WARN L424 MainDispatcher]: Unable to annotate _Bool with a witness entry [2024-01-31 17:19:07,342 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c[2862,2875] [2024-01-31 17:19:07,345 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:19:07,356 INFO L208 MainTranslator]: Completed translation [2024-01-31 17:19:07,356 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:19:07 WrapperNode [2024-01-31 17:19:07,357 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 17:19:07,357 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 17:19:07,357 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 17:19:07,358 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 17:19:07,362 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:19:07" (1/1) ... [2024-01-31 17:19:07,370 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:19:07" (1/1) ... [2024-01-31 17:19:07,403 INFO L138 Inliner]: procedures = 26, calls = 57, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 240 [2024-01-31 17:19:07,403 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 17:19:07,404 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 17:19:07,404 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 17:19:07,404 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 17:19:07,412 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:19:07" (1/1) ... [2024-01-31 17:19:07,412 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:19:07" (1/1) ... [2024-01-31 17:19:07,415 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:19:07" (1/1) ... [2024-01-31 17:19:07,427 INFO L175 MemorySlicer]: Split 24 memory accesses to 5 slices as follows [2, 2, 2, 2, 16]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 7 writes are split as follows [0, 1, 1, 1, 4]. [2024-01-31 17:19:07,428 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:19:07" (1/1) ... [2024-01-31 17:19:07,428 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:19:07" (1/1) ... [2024-01-31 17:19:07,437 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:19:07" (1/1) ... [2024-01-31 17:19:07,445 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:19:07" (1/1) ... [2024-01-31 17:19:07,447 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:19:07" (1/1) ... [2024-01-31 17:19:07,448 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:19:07" (1/1) ... [2024-01-31 17:19:07,451 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 17:19:07,452 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 17:19:07,452 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 17:19:07,452 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 17:19:07,453 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:19:07" (1/1) ... [2024-01-31 17:19:07,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:19:07,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:19:07,493 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-31 17:19:07,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-31 17:19:07,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 17:19:07,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 17:19:07,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 17:19:07,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 17:19:07,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 17:19:07,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 17:19:07,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-31 17:19:07,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-31 17:19:07,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-31 17:19:07,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-31 17:19:07,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-31 17:19:07,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-31 17:19:07,523 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-31 17:19:07,524 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-31 17:19:07,524 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-31 17:19:07,524 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-31 17:19:07,524 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-31 17:19:07,524 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-31 17:19:07,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 17:19:07,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 17:19:07,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 17:19:07,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 17:19:07,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-31 17:19:07,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 17:19:07,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 17:19:07,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-01-31 17:19:07,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 17:19:07,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 17:19:07,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 17:19:07,527 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 17:19:07,623 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 17:19:07,624 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 17:19:07,921 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 17:19:07,921 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 17:19:08,190 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 17:19:08,191 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-01-31 17:19:08,191 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:19:08 BoogieIcfgContainer [2024-01-31 17:19:08,191 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 17:19:08,193 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 17:19:08,193 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 17:19:08,195 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 17:19:08,195 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 05:19:06" (1/4) ... [2024-01-31 17:19:08,196 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1799cce5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:19:08, skipping insertion in model container [2024-01-31 17:19:08,196 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:19:07" (2/4) ... [2024-01-31 17:19:08,197 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1799cce5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:19:08, skipping insertion in model container [2024-01-31 17:19:08,197 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:19:07" (3/4) ... [2024-01-31 17:19:08,198 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1799cce5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:19:08, skipping insertion in model container [2024-01-31 17:19:08,198 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:19:08" (4/4) ... [2024-01-31 17:19:08,199 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-max.wvr.c [2024-01-31 17:19:08,213 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 17:19:08,213 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-31 17:19:08,213 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 17:19:08,252 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-01-31 17:19:08,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 41 transitions, 103 flow [2024-01-31 17:19:08,312 INFO L124 PetriNetUnfolderBase]: 7/38 cut-off events. [2024-01-31 17:19:08,312 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-31 17:19:08,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 38 events. 7/38 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 44 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2024-01-31 17:19:08,315 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 41 transitions, 103 flow [2024-01-31 17:19:08,318 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 37 transitions, 92 flow [2024-01-31 17:19:08,324 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 17:19:08,329 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;@2d1eaf8c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 17:19:08,329 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-01-31 17:19:08,343 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 17:19:08,343 INFO L124 PetriNetUnfolderBase]: 7/36 cut-off events. [2024-01-31 17:19:08,343 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-31 17:19:08,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:19:08,344 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] [2024-01-31 17:19:08,344 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:19:08,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:19:08,349 INFO L85 PathProgramCache]: Analyzing trace with hash 2092303507, now seen corresponding path program 1 times [2024-01-31 17:19:08,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:19:08,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980205062] [2024-01-31 17:19:08,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:19:08,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:19:08,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:19:08,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:19:08,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:19:08,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980205062] [2024-01-31 17:19:08,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980205062] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:19:08,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:19:08,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 17:19:08,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872108310] [2024-01-31 17:19:08,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:19:08,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:19:08,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:19:08,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:19:08,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:19:08,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-01-31 17:19:08,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 37 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:19:08,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:19:08,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-01-31 17:19:08,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:19:09,006 INFO L124 PetriNetUnfolderBase]: 406/689 cut-off events. [2024-01-31 17:19:09,006 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2024-01-31 17:19:09,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1305 conditions, 689 events. 406/689 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2827 event pairs, 265 based on Foata normal form. 0/609 useless extension candidates. Maximal degree in co-relation 993. Up to 557 conditions per place. [2024-01-31 17:19:09,014 INFO L140 encePairwiseOnDemand]: 38/41 looper letters, 29 selfloop transitions, 2 changer transitions 0/38 dead transitions. [2024-01-31 17:19:09,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 38 transitions, 156 flow [2024-01-31 17:19:09,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:19:09,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:19:09,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 62 transitions. [2024-01-31 17:19:09,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5040650406504065 [2024-01-31 17:19:09,026 INFO L175 Difference]: Start difference. First operand has 40 places, 37 transitions, 92 flow. Second operand 3 states and 62 transitions. [2024-01-31 17:19:09,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 38 transitions, 156 flow [2024-01-31 17:19:09,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 38 transitions, 144 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-31 17:19:09,033 INFO L231 Difference]: Finished difference. Result has 37 places, 38 transitions, 92 flow [2024-01-31 17:19:09,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=37, PETRI_TRANSITIONS=38} [2024-01-31 17:19:09,037 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -3 predicate places. [2024-01-31 17:19:09,037 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 38 transitions, 92 flow [2024-01-31 17:19:09,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:19:09,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:19:09,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:19:09,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 17:19:09,038 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:19:09,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:19:09,039 INFO L85 PathProgramCache]: Analyzing trace with hash 2133776376, now seen corresponding path program 1 times [2024-01-31 17:19:09,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:19:09,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028071760] [2024-01-31 17:19:09,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:19:09,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:19:09,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:19:09,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:19:09,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:19:09,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028071760] [2024-01-31 17:19:09,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028071760] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:19:09,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:19:09,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 17:19:09,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036415315] [2024-01-31 17:19:09,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:19:09,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:19:09,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:19:09,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:19:09,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:19:09,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-01-31 17:19:09,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 38 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:19:09,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:19:09,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-01-31 17:19:09,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:19:09,379 INFO L124 PetriNetUnfolderBase]: 406/691 cut-off events. [2024-01-31 17:19:09,380 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-01-31 17:19:09,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1275 conditions, 691 events. 406/691 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2830 event pairs, 265 based on Foata normal form. 0/611 useless extension candidates. Maximal degree in co-relation 1264. Up to 556 conditions per place. [2024-01-31 17:19:09,385 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 27 selfloop transitions, 6 changer transitions 0/40 dead transitions. [2024-01-31 17:19:09,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 40 transitions, 162 flow [2024-01-31 17:19:09,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 17:19:09,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 17:19:09,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 75 transitions. [2024-01-31 17:19:09,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4573170731707317 [2024-01-31 17:19:09,393 INFO L175 Difference]: Start difference. First operand has 37 places, 38 transitions, 92 flow. Second operand 4 states and 75 transitions. [2024-01-31 17:19:09,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 40 transitions, 162 flow [2024-01-31 17:19:09,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 40 transitions, 158 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-01-31 17:19:09,395 INFO L231 Difference]: Finished difference. Result has 40 places, 40 transitions, 116 flow [2024-01-31 17:19:09,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=116, PETRI_PLACES=40, PETRI_TRANSITIONS=40} [2024-01-31 17:19:09,396 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 0 predicate places. [2024-01-31 17:19:09,396 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 116 flow [2024-01-31 17:19:09,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:19:09,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:19:09,397 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] [2024-01-31 17:19:09,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 17:19:09,397 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:19:09,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:19:09,399 INFO L85 PathProgramCache]: Analyzing trace with hash 571813758, now seen corresponding path program 1 times [2024-01-31 17:19:09,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:19:09,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834801746] [2024-01-31 17:19:09,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:19:09,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:19:09,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:19:09,537 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-31 17:19:09,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:19:09,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834801746] [2024-01-31 17:19:09,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834801746] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:19:09,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:19:09,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 17:19:09,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858641099] [2024-01-31 17:19:09,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:19:09,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:19:09,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:19:09,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:19:09,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:19:09,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-01-31 17:19:09,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:19:09,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:19:09,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-01-31 17:19:09,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:19:09,655 INFO L124 PetriNetUnfolderBase]: 584/1064 cut-off events. [2024-01-31 17:19:09,656 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-01-31 17:19:09,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1870 conditions, 1064 events. 584/1064 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 4922 event pairs, 191 based on Foata normal form. 1/937 useless extension candidates. Maximal degree in co-relation 1850. Up to 398 conditions per place. [2024-01-31 17:19:09,665 INFO L140 encePairwiseOnDemand]: 38/41 looper letters, 44 selfloop transitions, 2 changer transitions 2/55 dead transitions. [2024-01-31 17:19:09,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 55 transitions, 245 flow [2024-01-31 17:19:09,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:19:09,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:19:09,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2024-01-31 17:19:09,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6178861788617886 [2024-01-31 17:19:09,669 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 116 flow. Second operand 3 states and 76 transitions. [2024-01-31 17:19:09,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 55 transitions, 245 flow [2024-01-31 17:19:09,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 55 transitions, 244 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 17:19:09,671 INFO L231 Difference]: Finished difference. Result has 42 places, 41 transitions, 127 flow [2024-01-31 17:19:09,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=42, PETRI_TRANSITIONS=41} [2024-01-31 17:19:09,672 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 2 predicate places. [2024-01-31 17:19:09,673 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 41 transitions, 127 flow [2024-01-31 17:19:09,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:19:09,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:19:09,673 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] [2024-01-31 17:19:09,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 17:19:09,673 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:19:09,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:19:09,674 INFO L85 PathProgramCache]: Analyzing trace with hash -486309193, now seen corresponding path program 1 times [2024-01-31 17:19:09,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:19:09,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038411187] [2024-01-31 17:19:09,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:19:09,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:19:09,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:19:09,825 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 17:19:09,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:19:09,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038411187] [2024-01-31 17:19:09,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038411187] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:19:09,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399198759] [2024-01-31 17:19:09,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:19:09,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:19:09,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:19:09,831 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:19:09,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-01-31 17:19:09,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:19:09,968 INFO L262 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 7 conjunts are in the unsatisfiable core [2024-01-31 17:19:09,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:19:10,085 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 17:19:10,085 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:19:10,139 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 17:19:10,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399198759] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:19:10,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:19:10,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-01-31 17:19:10,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062270161] [2024-01-31 17:19:10,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:19:10,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-01-31 17:19:10,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:19:10,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-01-31 17:19:10,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-01-31 17:19:10,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-01-31 17:19:10,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 41 transitions, 127 flow. Second operand has 12 states, 12 states have (on average 12.833333333333334) internal successors, (154), 12 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:19:10,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:19:10,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-01-31 17:19:10,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:19:10,424 INFO L124 PetriNetUnfolderBase]: 997/1625 cut-off events. [2024-01-31 17:19:10,424 INFO L125 PetriNetUnfolderBase]: For 111/111 co-relation queries the response was YES. [2024-01-31 17:19:10,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3191 conditions, 1625 events. 997/1625 cut-off events. For 111/111 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 7022 event pairs, 444 based on Foata normal form. 0/1382 useless extension candidates. Maximal degree in co-relation 2347. Up to 765 conditions per place. [2024-01-31 17:19:10,430 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 40 selfloop transitions, 10 changer transitions 41/97 dead transitions. [2024-01-31 17:19:10,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 97 transitions, 462 flow [2024-01-31 17:19:10,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 17:19:10,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 17:19:10,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-01-31 17:19:10,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46612466124661245 [2024-01-31 17:19:10,432 INFO L175 Difference]: Start difference. First operand has 42 places, 41 transitions, 127 flow. Second operand 9 states and 172 transitions. [2024-01-31 17:19:10,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 97 transitions, 462 flow [2024-01-31 17:19:10,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 97 transitions, 460 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 17:19:10,434 INFO L231 Difference]: Finished difference. Result has 53 places, 44 transitions, 177 flow [2024-01-31 17:19:10,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=177, PETRI_PLACES=53, PETRI_TRANSITIONS=44} [2024-01-31 17:19:10,435 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 13 predicate places. [2024-01-31 17:19:10,435 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 177 flow [2024-01-31 17:19:10,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.833333333333334) internal successors, (154), 12 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:19:10,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:19:10,436 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:19:10,450 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-01-31 17:19:10,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:19:10,647 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:19:10,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:19:10,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1632837600, now seen corresponding path program 2 times [2024-01-31 17:19:10,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:19:10,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451035206] [2024-01-31 17:19:10,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:19:10,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:19:10,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:19:10,817 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-01-31 17:19:10,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:19:10,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451035206] [2024-01-31 17:19:10,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451035206] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:19:10,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182086417] [2024-01-31 17:19:10,818 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-31 17:19:10,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:19:10,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:19:10,820 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:19:10,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-01-31 17:19:10,939 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-31 17:19:10,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:19:10,941 INFO L262 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 7 conjunts are in the unsatisfiable core [2024-01-31 17:19:10,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:19:11,000 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-01-31 17:19:11,000 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:19:11,058 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-01-31 17:19:11,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182086417] provided 1 perfect and 1 imperfect interpolant sequences [2024-01-31 17:19:11,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-01-31 17:19:11,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2024-01-31 17:19:11,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493710163] [2024-01-31 17:19:11,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:19:11,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:19:11,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:19:11,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:19:11,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-01-31 17:19:11,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-01-31 17:19:11,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 177 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:19:11,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:19:11,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-01-31 17:19:11,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:19:11,184 INFO L124 PetriNetUnfolderBase]: 720/1253 cut-off events. [2024-01-31 17:19:11,185 INFO L125 PetriNetUnfolderBase]: For 197/197 co-relation queries the response was YES. [2024-01-31 17:19:11,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2556 conditions, 1253 events. 720/1253 cut-off events. For 197/197 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 5896 event pairs, 377 based on Foata normal form. 0/1126 useless extension candidates. Maximal degree in co-relation 2521. Up to 771 conditions per place. [2024-01-31 17:19:11,190 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 47 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2024-01-31 17:19:11,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 59 transitions, 321 flow [2024-01-31 17:19:11,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 17:19:11,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 17:19:11,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2024-01-31 17:19:11,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4349593495934959 [2024-01-31 17:19:11,191 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 177 flow. Second operand 6 states and 107 transitions. [2024-01-31 17:19:11,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 59 transitions, 321 flow [2024-01-31 17:19:11,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 59 transitions, 301 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-01-31 17:19:11,194 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 177 flow [2024-01-31 17:19:11,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=177, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2024-01-31 17:19:11,194 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 11 predicate places. [2024-01-31 17:19:11,195 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 177 flow [2024-01-31 17:19:11,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:19:11,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:19:11,195 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:19:11,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-01-31 17:19:11,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:19:11,407 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:19:11,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:19:11,407 INFO L85 PathProgramCache]: Analyzing trace with hash 2095114933, now seen corresponding path program 1 times [2024-01-31 17:19:11,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:19:11,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412692272] [2024-01-31 17:19:11,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:19:11,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:19:11,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:19:11,589 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-01-31 17:19:11,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:19:11,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412692272] [2024-01-31 17:19:11,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412692272] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:19:11,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279155830] [2024-01-31 17:19:11,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:19:11,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:19:11,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:19:11,593 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:19:11,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-01-31 17:19:11,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:19:11,714 INFO L262 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 7 conjunts are in the unsatisfiable core [2024-01-31 17:19:11,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:19:11,757 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-01-31 17:19:11,757 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:19:11,804 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-01-31 17:19:11,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279155830] provided 1 perfect and 1 imperfect interpolant sequences [2024-01-31 17:19:11,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-01-31 17:19:11,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2024-01-31 17:19:11,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015990030] [2024-01-31 17:19:11,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:19:11,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:19:11,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:19:11,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:19:11,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-01-31 17:19:11,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-01-31 17:19:11,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 177 flow. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:19:11,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:19:11,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-01-31 17:19:11,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:19:11,977 INFO L124 PetriNetUnfolderBase]: 1030/1656 cut-off events. [2024-01-31 17:19:11,977 INFO L125 PetriNetUnfolderBase]: For 697/697 co-relation queries the response was YES. [2024-01-31 17:19:11,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3830 conditions, 1656 events. 1030/1656 cut-off events. For 697/697 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 7446 event pairs, 357 based on Foata normal form. 0/1401 useless extension candidates. Maximal degree in co-relation 3796. Up to 752 conditions per place. [2024-01-31 17:19:11,984 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 48 selfloop transitions, 6 changer transitions 0/60 dead transitions. [2024-01-31 17:19:11,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 60 transitions, 333 flow [2024-01-31 17:19:11,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 17:19:11,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 17:19:11,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 101 transitions. [2024-01-31 17:19:11,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4105691056910569 [2024-01-31 17:19:11,986 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 177 flow. Second operand 6 states and 101 transitions. [2024-01-31 17:19:11,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 60 transitions, 333 flow [2024-01-31 17:19:11,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 60 transitions, 319 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-01-31 17:19:11,990 INFO L231 Difference]: Finished difference. Result has 55 places, 46 transitions, 192 flow [2024-01-31 17:19:11,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=192, PETRI_PLACES=55, PETRI_TRANSITIONS=46} [2024-01-31 17:19:11,992 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 15 predicate places. [2024-01-31 17:19:11,992 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 46 transitions, 192 flow [2024-01-31 17:19:11,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:19:11,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:19:11,993 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:19:12,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-01-31 17:19:12,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:19:12,205 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:19:12,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:19:12,205 INFO L85 PathProgramCache]: Analyzing trace with hash 2000132837, now seen corresponding path program 1 times [2024-01-31 17:19:12,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:19:12,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307059639] [2024-01-31 17:19:12,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:19:12,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:19:12,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:19:13,594 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-01-31 17:19:13,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:19:13,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307059639] [2024-01-31 17:19:13,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307059639] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:19:13,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756282758] [2024-01-31 17:19:13,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:19:13,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:19:13,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:19:13,596 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:19:13,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-01-31 17:19:13,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:19:13,723 INFO L262 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 25 conjunts are in the unsatisfiable core [2024-01-31 17:19:13,729 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:19:14,108 INFO L349 Elim1Store]: treesize reduction 80, result has 60.2 percent of original size [2024-01-31 17:19:14,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 135 treesize of output 171