./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-prod-cons-eq.wvr.c --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/popl20-prod-cons-eq.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 958ec4d9 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-prod-cons-eq.wvr.c ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/popl20-prod-cons-eq.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-dev-958ec4d-m [2024-02-07 14:41:43,766 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 14:41:43,814 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 14:41:43,817 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 14:41:43,818 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 14:41:43,857 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 14:41:43,857 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 14:41:43,857 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 14:41:43,858 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 14:41:43,858 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 14:41:43,858 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 14:41:43,859 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 14:41:43,859 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 14:41:43,859 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 14:41:43,860 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 14:41:43,860 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 14:41:43,860 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 14:41:43,861 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 14:41:43,861 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 14:41:43,861 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 14:41:43,861 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 14:41:43,863 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 14:41:43,863 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 14:41:43,864 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 14:41:43,864 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 14:41:43,864 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 14:41:43,864 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 14:41:43,864 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 14:41:43,865 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 14:41:43,865 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 14:41:43,865 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 14:41:43,865 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 14:41:43,865 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:41:43,866 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 14:41:43,866 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 14:41:43,867 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 14:41:43,867 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 14:41:43,867 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 14:41:43,867 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 14:41:43,868 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 14:41:43,868 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 14:41:43,868 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 14:41:43,868 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 14:41:43,868 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 14:41:44,067 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 14:41:44,088 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 14:41:44,090 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 14:41:44,091 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 14:41:44,091 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 14:41:44,092 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-prod-cons-eq.wvr.c [2024-02-07 14:41:45,245 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 14:41:45,420 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 14:41:45,421 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-prod-cons-eq.wvr.c [2024-02-07 14:41:45,427 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2778f1a31/fcf01ff680684893a93925bd97e08ce3/FLAG00b8cb443 [2024-02-07 14:41:45,436 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2778f1a31/fcf01ff680684893a93925bd97e08ce3 [2024-02-07 14:41:45,438 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 14:41:45,438 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 14:41:45,439 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/popl20-prod-cons-eq.wvr.yml/witness.yml [2024-02-07 14:41:45,509 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 14:41:45,510 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 14:41:45,511 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 14:41:45,511 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 14:41:45,516 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 14:41:45,517 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:41:45" (1/2) ... [2024-02-07 14:41:45,518 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@104bdddc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:41:45, skipping insertion in model container [2024-02-07 14:41:45,518 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:41:45" (1/2) ... [2024-02-07 14:41:45,519 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@798d71dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:41:45, skipping insertion in model container [2024-02-07 14:41:45,520 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:41:45" (2/2) ... [2024-02-07 14:41:45,520 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@104bdddc and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:41:45, skipping insertion in model container [2024-02-07 14:41:45,520 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:41:45" (2/2) ... [2024-02-07 14:41:45,520 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 14:41:45,543 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 14:41:45,544 INFO L76 edCorrectnessWitness]: Location invariant before [L83-L83] finished1 == (_Bool)1 [2024-02-07 14:41:45,545 INFO L76 edCorrectnessWitness]: Location invariant before [L70-L70] finished1 == (_Bool)1 [2024-02-07 14:41:45,545 INFO L76 edCorrectnessWitness]: Location invariant before [L80-L80] -2147483647 <= front1 [2024-02-07 14:41:45,545 INFO L76 edCorrectnessWitness]: Location invariant before [L62-L62] finished1 == (_Bool)0 || finished1 == (_Bool)1 [2024-02-07 14:41:45,545 INFO L76 edCorrectnessWitness]: Location invariant before [L75-L75] 0 <= state12 [2024-02-07 14:41:45,546 INFO L76 edCorrectnessWitness]: Location invariant before [L57-L57] -2147483647 <= size1 [2024-02-07 14:41:45,546 INFO L76 edCorrectnessWitness]: Location invariant before [L53-L53] (-2147483647 <= front1) && (-2147483647 <= size1) [2024-02-07 14:41:45,546 INFO L76 edCorrectnessWitness]: Location invariant before [L127-L127] ((((((((8 <= i && i <= 2147483646) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0) [2024-02-07 14:41:45,546 INFO L76 edCorrectnessWitness]: Location invariant before [L76-L76] 0 <= front1 [2024-02-07 14:41:45,546 INFO L76 edCorrectnessWitness]: Location invariant before [L81-L81] size1 <= 2147483646 [2024-02-07 14:41:45,546 INFO L76 edCorrectnessWitness]: Location invariant before [L161-L161] ((((((((8 <= i && i <= 2147483646) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0) [2024-02-07 14:41:45,546 INFO L76 edCorrectnessWitness]: Location invariant before [L150-L150] ((((((((0 == i && i == 0) || (8 <= i && i <= 2147483646)) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1 [2024-02-07 14:41:45,547 INFO L76 edCorrectnessWitness]: Location invariant after [L70-L70] finished1 == (_Bool)1 [2024-02-07 14:41:45,569 INFO L178 MainTranslator]: Built tables and reachable declarations [2024-02-07 14:41:45,695 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-prod-cons-eq.wvr.c[4419,4432] [2024-02-07 14:41:45,703 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:41:45,709 INFO L203 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 14:41:45,747 WARN L423 MainDispatcher]: Unable to annotate _Bool with a witness entry [2024-02-07 14:41:45,747 WARN L423 MainDispatcher]: Unable to annotate cond = !finished1 || size1 > 0 with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 14:41:45,758 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-prod-cons-eq.wvr.c[4419,4432] Start Parsing Local Start Parsing Local [2024-02-07 14:41:45,782 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:41:45,795 INFO L207 MainTranslator]: Completed translation [2024-02-07 14:41:45,796 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:41:45 WrapperNode [2024-02-07 14:41:45,796 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 14:41:45,797 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 14:41:45,797 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 14:41:45,797 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 14:41:45,802 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 02:41:45" (1/1) ... [2024-02-07 14:41:45,820 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 02:41:45" (1/1) ... [2024-02-07 14:41:45,849 INFO L138 Inliner]: procedures = 28, calls = 80, calls flagged for inlining = 26, calls inlined = 32, statements flattened = 428 [2024-02-07 14:41:45,849 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 14:41:45,850 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 14:41:45,850 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 14:41:45,850 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 14:41:45,857 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 02:41:45" (1/1) ... [2024-02-07 14:41:45,858 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 02:41:45" (1/1) ... [2024-02-07 14:41:45,871 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 02:41:45" (1/1) ... [2024-02-07 14:41:45,893 INFO L175 MemorySlicer]: Split 30 memory accesses to 7 slices as follows [2, 16, 3, 2, 2, 2, 3]. 53 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0]. The 9 writes are split as follows [0, 4, 1, 1, 1, 1, 1]. [2024-02-07 14:41:45,894 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 02:41:45" (1/1) ... [2024-02-07 14:41:45,894 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 02:41:45" (1/1) ... [2024-02-07 14:41:45,910 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 02:41:45" (1/1) ... [2024-02-07 14:41:45,918 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 02:41:45" (1/1) ... [2024-02-07 14:41:45,920 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 02:41:45" (1/1) ... [2024-02-07 14:41:45,922 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 02:41:45" (1/1) ... [2024-02-07 14:41:45,926 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 14:41:45,926 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 14:41:45,926 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 14:41:45,927 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 14:41:45,927 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 02:41:45" (1/1) ... [2024-02-07 14:41:45,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:41:45,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:41:45,948 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 14:41:45,994 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 14:41:46,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 14:41:46,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-02-07 14:41:46,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-02-07 14:41:46,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-02-07 14:41:46,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-02-07 14:41:46,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-02-07 14:41:46,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-02-07 14:41:46,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-02-07 14:41:46,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 14:41:46,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 14:41:46,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 14:41:46,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 14:41:46,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 14:41:46,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-07 14:41:46,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-02-07 14:41:46,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-02-07 14:41:46,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-07 14:41:46,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-07 14:41:46,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-07 14:41:46,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-07 14:41:46,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-07 14:41:46,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-02-07 14:41:46,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-02-07 14:41:46,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-02-07 14:41:46,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-02-07 14:41:46,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-02-07 14:41:46,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-02-07 14:41:46,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-02-07 14:41:46,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-02-07 14:41:46,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-02-07 14:41:46,014 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-07 14:41:46,014 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-07 14:41:46,014 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-07 14:41:46,015 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-07 14:41:46,015 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-02-07 14:41:46,015 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-02-07 14:41:46,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 14:41:46,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 14:41:46,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 14:41:46,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 14:41:46,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-07 14:41:46,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-02-07 14:41:46,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-02-07 14:41:46,016 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-07 14:41:46,016 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-07 14:41:46,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-02-07 14:41:46,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 14:41:46,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 14:41:46,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 14:41:46,018 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 14:41:46,162 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 14:41:46,164 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 14:41:46,594 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 14:41:46,594 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 14:41:47,055 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 14:41:47,056 INFO L320 CfgBuilder]: Removed 9 assume(true) statements. [2024-02-07 14:41:47,056 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:41:47 BoogieIcfgContainer [2024-02-07 14:41:47,056 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 14:41:47,060 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 14:41:47,060 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 14:41:47,062 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 14:41:47,063 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 02:41:45" (1/4) ... [2024-02-07 14:41:47,064 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a97ac3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 02:41:47, skipping insertion in model container [2024-02-07 14:41:47,064 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:41:45" (2/4) ... [2024-02-07 14:41:47,065 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a97ac3d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:41:47, skipping insertion in model container [2024-02-07 14:41:47,065 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 02:41:45" (3/4) ... [2024-02-07 14:41:47,066 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a97ac3d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:41:47, skipping insertion in model container [2024-02-07 14:41:47,066 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:41:47" (4/4) ... [2024-02-07 14:41:47,067 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons-eq.wvr.c [2024-02-07 14:41:47,083 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 14:41:47,083 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2024-02-07 14:41:47,084 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 14:41:47,153 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-02-07 14:41:47,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 65 transitions, 151 flow [2024-02-07 14:41:47,267 INFO L124 PetriNetUnfolderBase]: 9/62 cut-off events. [2024-02-07 14:41:47,267 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-02-07 14:41:47,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 62 events. 9/62 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 121 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2024-02-07 14:41:47,272 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 65 transitions, 151 flow [2024-02-07 14:41:47,276 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 61 transitions, 140 flow [2024-02-07 14:41:47,288 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 14:41:47,297 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;@6a224d54, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 14:41:47,297 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-02-07 14:41:47,302 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 14:41:47,302 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-02-07 14:41:47,302 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:41:47,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:41:47,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-02-07 14:41:47,303 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 23 more)] === [2024-02-07 14:41:47,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:41:47,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1283826, now seen corresponding path program 1 times [2024-02-07 14:41:47,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:41:47,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249809283] [2024-02-07 14:41:47,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:41:47,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:41:47,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:41:47,563 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 14:41:47,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:41:47,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249809283] [2024-02-07 14:41:47,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249809283] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:41:47,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:41:47,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 14:41:47,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073441645] [2024-02-07 14:41:47,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:41:47,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:41:47,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:41:47,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:41:47,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:41:47,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 65 [2024-02-07 14:41:47,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 61 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 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 14:41:47,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:41:47,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 65 [2024-02-07 14:41:47,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:41:48,089 INFO L124 PetriNetUnfolderBase]: 1543/2170 cut-off events. [2024-02-07 14:41:48,094 INFO L125 PetriNetUnfolderBase]: For 87/87 co-relation queries the response was YES. [2024-02-07 14:41:48,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4372 conditions, 2170 events. 1543/2170 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 10717 event pairs, 813 based on Foata normal form. 0/1308 useless extension candidates. Maximal degree in co-relation 3872. Up to 2036 conditions per place. [2024-02-07 14:41:48,108 INFO L140 encePairwiseOnDemand]: 49/65 looper letters, 42 selfloop transitions, 10 changer transitions 0/67 dead transitions. [2024-02-07 14:41:48,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 67 transitions, 256 flow [2024-02-07 14:41:48,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:41:48,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:41:48,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 112 transitions. [2024-02-07 14:41:48,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5743589743589743 [2024-02-07 14:41:48,118 INFO L175 Difference]: Start difference. First operand has 62 places, 61 transitions, 140 flow. Second operand 3 states and 112 transitions. [2024-02-07 14:41:48,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 67 transitions, 256 flow [2024-02-07 14:41:48,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 67 transitions, 244 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-02-07 14:41:48,124 INFO L231 Difference]: Finished difference. Result has 58 places, 67 transitions, 204 flow [2024-02-07 14:41:48,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=204, PETRI_PLACES=58, PETRI_TRANSITIONS=67} [2024-02-07 14:41:48,128 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -4 predicate places. [2024-02-07 14:41:48,128 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 67 transitions, 204 flow [2024-02-07 14:41:48,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 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 14:41:48,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:41:48,129 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-02-07 14:41:48,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 14:41:48,129 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 23 more)] === [2024-02-07 14:41:48,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:41:48,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1233799000, now seen corresponding path program 1 times [2024-02-07 14:41:48,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:41:48,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795457889] [2024-02-07 14:41:48,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:41:48,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:41:48,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:41:48,225 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:41:48,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:41:48,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795457889] [2024-02-07 14:41:48,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795457889] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 14:41:48,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517055468] [2024-02-07 14:41:48,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:41:48,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:41:48,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:41:48,257 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) [2024-02-07 14:41:48,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-02-07 14:41:48,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:41:48,398 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2024-02-07 14:41:48,401 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 14:41:48,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:41:48,420 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 14:41:48,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:41:48,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517055468] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 14:41:48,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 14:41:48,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-02-07 14:41:48,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820060049] [2024-02-07 14:41:48,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 14:41:48,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:41:48,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:41:48,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:41:48,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:41:48,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 65 [2024-02-07 14:41:48,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 67 transitions, 204 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 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 14:41:48,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:41:48,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 65 [2024-02-07 14:41:48,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:41:48,779 INFO L124 PetriNetUnfolderBase]: 1547/2182 cut-off events. [2024-02-07 14:41:48,779 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2024-02-07 14:41:48,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4341 conditions, 2182 events. 1547/2182 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 10809 event pairs, 813 based on Foata normal form. 0/1320 useless extension candidates. Maximal degree in co-relation 4223. Up to 2038 conditions per place. [2024-02-07 14:41:48,788 INFO L140 encePairwiseOnDemand]: 51/65 looper letters, 42 selfloop transitions, 18 changer transitions 0/75 dead transitions. [2024-02-07 14:41:48,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 75 transitions, 360 flow [2024-02-07 14:41:48,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:41:48,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:41:48,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 136 transitions. [2024-02-07 14:41:48,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5230769230769231 [2024-02-07 14:41:48,791 INFO L175 Difference]: Start difference. First operand has 58 places, 67 transitions, 204 flow. Second operand 4 states and 136 transitions. [2024-02-07 14:41:48,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 75 transitions, 360 flow [2024-02-07 14:41:48,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 75 transitions, 336 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:41:48,793 INFO L231 Difference]: Finished difference. Result has 60 places, 75 transitions, 284 flow [2024-02-07 14:41:48,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=284, PETRI_PLACES=60, PETRI_TRANSITIONS=75} [2024-02-07 14:41:48,794 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -2 predicate places. [2024-02-07 14:41:48,794 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 75 transitions, 284 flow [2024-02-07 14:41:48,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 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 14:41:48,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:41:48,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-02-07 14:41:48,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-02-07 14:41:49,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:41:49,007 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 23 more)] === [2024-02-07 14:41:49,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:41:49,007 INFO L85 PathProgramCache]: Analyzing trace with hash -405095947, now seen corresponding path program 1 times [2024-02-07 14:41:49,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:41:49,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7254745] [2024-02-07 14:41:49,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:41:49,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:41:49,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:41:49,050 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 14:41:49,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:41:49,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7254745] [2024-02-07 14:41:49,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7254745] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:41:49,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:41:49,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:41:49,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232064400] [2024-02-07 14:41:49,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:41:49,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:41:49,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:41:49,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:41:49,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:41:49,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 65 [2024-02-07 14:41:49,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 75 transitions, 284 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 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 14:41:49,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:41:49,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 65 [2024-02-07 14:41:49,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:41:49,338 INFO L124 PetriNetUnfolderBase]: 1548/2185 cut-off events. [2024-02-07 14:41:49,338 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2024-02-07 14:41:49,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4368 conditions, 2185 events. 1548/2185 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 10829 event pairs, 813 based on Foata normal form. 0/1326 useless extension candidates. Maximal degree in co-relation 4255. Up to 2046 conditions per place. [2024-02-07 14:41:49,348 INFO L140 encePairwiseOnDemand]: 61/65 looper letters, 54 selfloop transitions, 5 changer transitions 0/77 dead transitions. [2024-02-07 14:41:49,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 77 transitions, 406 flow [2024-02-07 14:41:49,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:41:49,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:41:49,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2024-02-07 14:41:49,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5487179487179488 [2024-02-07 14:41:49,349 INFO L175 Difference]: Start difference. First operand has 60 places, 75 transitions, 284 flow. Second operand 3 states and 107 transitions. [2024-02-07 14:41:49,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 77 transitions, 406 flow [2024-02-07 14:41:49,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 77 transitions, 382 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-02-07 14:41:49,351 INFO L231 Difference]: Finished difference. Result has 62 places, 77 transitions, 285 flow [2024-02-07 14:41:49,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=285, PETRI_PLACES=62, PETRI_TRANSITIONS=77} [2024-02-07 14:41:49,352 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 0 predicate places. [2024-02-07 14:41:49,352 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 77 transitions, 285 flow [2024-02-07 14:41:49,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 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 14:41:49,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:41:49,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:41:49,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-07 14:41:49,353 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 23 more)] === [2024-02-07 14:41:49,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:41:49,353 INFO L85 PathProgramCache]: Analyzing trace with hash 326930862, now seen corresponding path program 1 times [2024-02-07 14:41:49,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:41:49,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511992704] [2024-02-07 14:41:49,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:41:49,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:41:49,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:41:49,390 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 14:41:49,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:41:49,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511992704] [2024-02-07 14:41:49,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511992704] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:41:49,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:41:49,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:41:49,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61960608] [2024-02-07 14:41:49,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:41:49,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:41:49,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:41:49,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:41:49,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:41:49,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 65 [2024-02-07 14:41:49,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 77 transitions, 285 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 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 14:41:49,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:41:49,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 65 [2024-02-07 14:41:49,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:41:49,663 INFO L124 PetriNetUnfolderBase]: 1552/2198 cut-off events. [2024-02-07 14:41:49,664 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-02-07 14:41:49,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4404 conditions, 2198 events. 1552/2198 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 10890 event pairs, 813 based on Foata normal form. 1/1341 useless extension candidates. Maximal degree in co-relation 4287. Up to 2051 conditions per place. [2024-02-07 14:41:49,672 INFO L140 encePairwiseOnDemand]: 61/65 looper letters, 61 selfloop transitions, 6 changer transitions 0/85 dead transitions. [2024-02-07 14:41:49,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 85 transitions, 459 flow [2024-02-07 14:41:49,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:41:49,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:41:49,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 109 transitions. [2024-02-07 14:41:49,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.558974358974359 [2024-02-07 14:41:49,673 INFO L175 Difference]: Start difference. First operand has 62 places, 77 transitions, 285 flow. Second operand 3 states and 109 transitions. [2024-02-07 14:41:49,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 85 transitions, 459 flow [2024-02-07 14:41:49,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 85 transitions, 454 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:41:49,676 INFO L231 Difference]: Finished difference. Result has 64 places, 81 transitions, 326 flow [2024-02-07 14:41:49,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=326, PETRI_PLACES=64, PETRI_TRANSITIONS=81} [2024-02-07 14:41:49,677 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 2 predicate places. [2024-02-07 14:41:49,677 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 81 transitions, 326 flow [2024-02-07 14:41:49,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 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 14:41:49,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:41:49,677 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1] [2024-02-07 14:41:49,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-07 14:41:49,677 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 23 more)] === [2024-02-07 14:41:49,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:41:49,678 INFO L85 PathProgramCache]: Analyzing trace with hash 269907518, now seen corresponding path program 2 times [2024-02-07 14:41:49,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:41:49,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202863204] [2024-02-07 14:41:49,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:41:49,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:41:49,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:41:49,748 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:41:49,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:41:49,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202863204] [2024-02-07 14:41:49,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202863204] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 14:41:49,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498427221] [2024-02-07 14:41:49,749 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-07 14:41:49,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:41:49,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:41:49,750 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) [2024-02-07 14:41:49,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-02-07 14:41:49,883 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-07 14:41:49,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-07 14:41:49,884 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 7 conjunts are in the unsatisfiable core [2024-02-07 14:41:49,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 14:41:49,895 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:41:49,895 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 14:41:49,904 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:41:49,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498427221] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 14:41:49,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 14:41:49,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-02-07 14:41:49,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990885315] [2024-02-07 14:41:49,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 14:41:49,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 14:41:49,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:41:49,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 14:41:49,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-07 14:41:49,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 65 [2024-02-07 14:41:49,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 81 transitions, 326 flow. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:41:49,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:41:49,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 65 [2024-02-07 14:41:49,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:41:50,238 INFO L124 PetriNetUnfolderBase]: 1557/2213 cut-off events. [2024-02-07 14:41:50,238 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2024-02-07 14:41:50,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4469 conditions, 2213 events. 1557/2213 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 10998 event pairs, 813 based on Foata normal form. 0/1350 useless extension candidates. Maximal degree in co-relation 4322. Up to 2050 conditions per place. [2024-02-07 14:41:50,246 INFO L140 encePairwiseOnDemand]: 51/65 looper letters, 46 selfloop transitions, 29 changer transitions 0/90 dead transitions. [2024-02-07 14:41:50,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 90 transitions, 535 flow [2024-02-07 14:41:50,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:41:50,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:41:50,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 162 transitions. [2024-02-07 14:41:50,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49846153846153846 [2024-02-07 14:41:50,249 INFO L175 Difference]: Start difference. First operand has 64 places, 81 transitions, 326 flow. Second operand 5 states and 162 transitions. [2024-02-07 14:41:50,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 90 transitions, 535 flow [2024-02-07 14:41:50,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 90 transitions, 528 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:41:50,252 INFO L231 Difference]: Finished difference. Result has 68 places, 90 transitions, 471 flow [2024-02-07 14:41:50,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=471, PETRI_PLACES=68, PETRI_TRANSITIONS=90} [2024-02-07 14:41:50,255 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 6 predicate places. [2024-02-07 14:41:50,255 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 90 transitions, 471 flow [2024-02-07 14:41:50,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:41:50,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:41:50,255 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-02-07 14:41:50,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-02-07 14:41:50,471 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 [2024-02-07 14:41:50,472 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 23 more)] === [2024-02-07 14:41:50,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:41:50,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1544860346, now seen corresponding path program 1 times [2024-02-07 14:41:50,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:41:50,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538475892] [2024-02-07 14:41:50,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:41:50,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:41:50,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:41:50,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-07 14:41:50,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:41:50,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538475892] [2024-02-07 14:41:50,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538475892] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:41:50,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:41:50,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 14:41:50,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211128921] [2024-02-07 14:41:50,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:41:50,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 14:41:50,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:41:50,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 14:41:50,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-07 14:41:50,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 65 [2024-02-07 14:41:50,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 90 transitions, 471 flow. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 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) [2024-02-07 14:41:50,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:41:50,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 65 [2024-02-07 14:41:50,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:41:51,003 INFO L124 PetriNetUnfolderBase]: 2052/3035 cut-off events. [2024-02-07 14:41:51,003 INFO L125 PetriNetUnfolderBase]: For 239/239 co-relation queries the response was YES. [2024-02-07 14:41:51,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6239 conditions, 3035 events. 2052/3035 cut-off events. For 239/239 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 17058 event pairs, 1171 based on Foata normal form. 50/1988 useless extension candidates. Maximal degree in co-relation 5950. Up to 2069 conditions per place. [2024-02-07 14:41:51,016 INFO L140 encePairwiseOnDemand]: 53/65 looper letters, 110 selfloop transitions, 16 changer transitions 0/139 dead transitions. [2024-02-07 14:41:51,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 139 transitions, 995 flow [2024-02-07 14:41:51,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 14:41:51,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 14:41:51,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 183 transitions. [2024-02-07 14:41:51,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46923076923076923 [2024-02-07 14:41:51,018 INFO L175 Difference]: Start difference. First operand has 68 places, 90 transitions, 471 flow. Second operand 6 states and 183 transitions. [2024-02-07 14:41:51,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 139 transitions, 995 flow [2024-02-07 14:41:51,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 139 transitions, 881 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-02-07 14:41:51,021 INFO L231 Difference]: Finished difference. Result has 73 places, 100 transitions, 546 flow [2024-02-07 14:41:51,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=546, PETRI_PLACES=73, PETRI_TRANSITIONS=100} [2024-02-07 14:41:51,023 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 11 predicate places. [2024-02-07 14:41:51,024 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 100 transitions, 546 flow [2024-02-07 14:41:51,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 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) [2024-02-07 14:41:51,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:41:51,026 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1] [2024-02-07 14:41:51,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-07 14:41:51,026 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 23 more)] === [2024-02-07 14:41:51,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:41:51,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1683129252, now seen corresponding path program 3 times [2024-02-07 14:41:51,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:41:51,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434494534] [2024-02-07 14:41:51,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:41:51,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:41:51,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:41:51,109 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:41:51,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:41:51,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434494534] [2024-02-07 14:41:51,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434494534] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 14:41:51,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310519862] [2024-02-07 14:41:51,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-07 14:41:51,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:41:51,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:41:51,111 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) [2024-02-07 14:41:51,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-02-07 14:41:51,220 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-07 14:41:51,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-07 14:41:51,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 15 conjunts are in the unsatisfiable core [2024-02-07 14:41:51,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 14:41:51,314 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-02-07 14:41:51,314 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 14:41:51,465 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-02-07 14:41:51,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310519862] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 14:41:51,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 14:41:51,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 9 [2024-02-07 14:41:51,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421587027] [2024-02-07 14:41:51,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 14:41:51,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-07 14:41:51,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:41:51,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-07 14:41:51,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-02-07 14:41:51,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 65 [2024-02-07 14:41:51,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 100 transitions, 546 flow. Second operand has 11 states, 11 states have (on average 15.636363636363637) internal successors, (172), 11 states have internal predecessors, (172), 0 states have call successors, (0), 0 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 14:41:51,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:41:51,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 65 [2024-02-07 14:41:51,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:41:52,021 INFO L124 PetriNetUnfolderBase]: 2099/3115 cut-off events. [2024-02-07 14:41:52,021 INFO L125 PetriNetUnfolderBase]: For 394/394 co-relation queries the response was YES. [2024-02-07 14:41:52,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6808 conditions, 3115 events. 2099/3115 cut-off events. For 394/394 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 17579 event pairs, 1196 based on Foata normal form. 0/2228 useless extension candidates. Maximal degree in co-relation 6338. Up to 2843 conditions per place. [2024-02-07 14:41:52,038 INFO L140 encePairwiseOnDemand]: 50/65 looper letters, 68 selfloop transitions, 59 changer transitions 0/138 dead transitions. [2024-02-07 14:41:52,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 138 transitions, 1004 flow [2024-02-07 14:41:52,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-02-07 14:41:52,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-02-07 14:41:52,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 296 transitions. [2024-02-07 14:41:52,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3502958579881657 [2024-02-07 14:41:52,039 INFO L175 Difference]: Start difference. First operand has 73 places, 100 transitions, 546 flow. Second operand 13 states and 296 transitions. [2024-02-07 14:41:52,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 138 transitions, 1004 flow [2024-02-07 14:41:52,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 138 transitions, 995 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-02-07 14:41:52,043 INFO L231 Difference]: Finished difference. Result has 86 places, 119 transitions, 874 flow [2024-02-07 14:41:52,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=874, PETRI_PLACES=86, PETRI_TRANSITIONS=119} [2024-02-07 14:41:52,043 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 24 predicate places. [2024-02-07 14:41:52,043 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 119 transitions, 874 flow [2024-02-07 14:41:52,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.636363636363637) internal successors, (172), 11 states have internal predecessors, (172), 0 states have call successors, (0), 0 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 14:41:52,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:41:52,044 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:41:52,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-02-07 14:41:52,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:41:52,258 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 23 more)] === [2024-02-07 14:41:52,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:41:52,259 INFO L85 PathProgramCache]: Analyzing trace with hash -543052269, now seen corresponding path program 1 times [2024-02-07 14:41:52,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:41:52,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078805009] [2024-02-07 14:41:52,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:41:52,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:41:52,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:41:52,368 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:41:52,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:41:52,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078805009] [2024-02-07 14:41:52,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078805009] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 14:41:52,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112037096] [2024-02-07 14:41:52,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:41:52,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:41:52,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:41:52,370 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) [2024-02-07 14:41:52,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-02-07 14:41:52,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:41:52,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 10 conjunts are in the unsatisfiable core [2024-02-07 14:41:52,509 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 14:41:52,557 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:41:52,557 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 14:41:52,600 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:41:52,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112037096] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 14:41:52,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 14:41:52,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-02-07 14:41:52,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423209474] [2024-02-07 14:41:52,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 14:41:52,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-02-07 14:41:52,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:41:52,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-02-07 14:41:52,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-02-07 14:41:52,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 65 [2024-02-07 14:41:52,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 119 transitions, 874 flow. Second operand has 14 states, 14 states have (on average 13.785714285714286) internal successors, (193), 14 states have internal predecessors, (193), 0 states have call successors, (0), 0 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 14:41:52,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:41:52,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 65 [2024-02-07 14:41:52,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:41:53,361 INFO L124 PetriNetUnfolderBase]: 3652/5317 cut-off events. [2024-02-07 14:41:53,361 INFO L125 PetriNetUnfolderBase]: For 1034/1034 co-relation queries the response was YES. [2024-02-07 14:41:53,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11800 conditions, 5317 events. 3652/5317 cut-off events. For 1034/1034 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 31249 event pairs, 2009 based on Foata normal form. 1/3833 useless extension candidates. Maximal degree in co-relation 11711. Up to 2836 conditions per place. [2024-02-07 14:41:53,383 INFO L140 encePairwiseOnDemand]: 49/65 looper letters, 110 selfloop transitions, 76 changer transitions 0/195 dead transitions. [2024-02-07 14:41:53,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 195 transitions, 1736 flow [2024-02-07 14:41:53,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-07 14:41:53,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-07 14:41:53,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 252 transitions. [2024-02-07 14:41:53,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3230769230769231 [2024-02-07 14:41:53,385 INFO L175 Difference]: Start difference. First operand has 86 places, 119 transitions, 874 flow. Second operand 12 states and 252 transitions. [2024-02-07 14:41:53,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 195 transitions, 1736 flow [2024-02-07 14:41:53,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 195 transitions, 1462 flow, removed 79 selfloop flow, removed 4 redundant places. [2024-02-07 14:41:53,392 INFO L231 Difference]: Finished difference. Result has 98 places, 150 transitions, 1197 flow [2024-02-07 14:41:53,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=694, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1197, PETRI_PLACES=98, PETRI_TRANSITIONS=150} [2024-02-07 14:41:53,393 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 36 predicate places. [2024-02-07 14:41:53,393 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 150 transitions, 1197 flow [2024-02-07 14:41:53,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 13.785714285714286) internal successors, (193), 14 states have internal predecessors, (193), 0 states have call successors, (0), 0 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 14:41:53,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:41:53,393 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:41:53,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-02-07 14:41:53,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:41:53,604 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 23 more)] === [2024-02-07 14:41:53,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:41:53,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1387246627, now seen corresponding path program 1 times [2024-02-07 14:41:53,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:41:53,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82562315] [2024-02-07 14:41:53,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:41:53,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:41:53,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:41:53,672 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:41:53,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:41:53,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82562315] [2024-02-07 14:41:53,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82562315] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 14:41:53,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468048857] [2024-02-07 14:41:53,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:41:53,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:41:53,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:41:53,674 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-07 14:41:53,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-02-07 14:41:53,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:41:53,811 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 5 conjunts are in the unsatisfiable core [2024-02-07 14:41:53,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 14:41:53,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:41:53,819 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 14:41:53,825 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:41:53,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468048857] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 14:41:53,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 14:41:53,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-02-07 14:41:53,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585920866] [2024-02-07 14:41:53,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 14:41:53,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:41:53,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:41:53,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:41:53,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:41:53,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 65 [2024-02-07 14:41:53,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 150 transitions, 1197 flow. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 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 14:41:53,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:41:53,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 65 [2024-02-07 14:41:53,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:41:54,448 INFO L124 PetriNetUnfolderBase]: 3704/5417 cut-off events. [2024-02-07 14:41:54,449 INFO L125 PetriNetUnfolderBase]: For 1276/1276 co-relation queries the response was YES. [2024-02-07 14:41:54,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12225 conditions, 5417 events. 3704/5417 cut-off events. For 1276/1276 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 32314 event pairs, 2034 based on Foata normal form. 3/3914 useless extension candidates. Maximal degree in co-relation 12172. Up to 4955 conditions per place. [2024-02-07 14:41:54,468 INFO L140 encePairwiseOnDemand]: 61/65 looper letters, 144 selfloop transitions, 24 changer transitions 0/191 dead transitions. [2024-02-07 14:41:54,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 191 transitions, 1958 flow [2024-02-07 14:41:54,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:41:54,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:41:54,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2024-02-07 14:41:54,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5153846153846153 [2024-02-07 14:41:54,470 INFO L175 Difference]: Start difference. First operand has 98 places, 150 transitions, 1197 flow. Second operand 4 states and 134 transitions. [2024-02-07 14:41:54,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 191 transitions, 1958 flow [2024-02-07 14:41:54,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 191 transitions, 1940 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-02-07 14:41:54,477 INFO L231 Difference]: Finished difference. Result has 101 places, 159 transitions, 1351 flow [2024-02-07 14:41:54,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=1183, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1351, PETRI_PLACES=101, PETRI_TRANSITIONS=159} [2024-02-07 14:41:54,478 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 39 predicate places. [2024-02-07 14:41:54,478 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 159 transitions, 1351 flow [2024-02-07 14:41:54,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 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 14:41:54,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:41:54,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:41:54,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-02-07 14:41:54,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:41:54,690 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 23 more)] === [2024-02-07 14:41:54,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:41:54,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1385204736, now seen corresponding path program 1 times [2024-02-07 14:41:54,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:41:54,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322421832] [2024-02-07 14:41:54,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:41:54,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:41:54,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 14:41:54,709 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-07 14:41:54,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 14:41:54,742 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-07 14:41:54,742 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-07 14:41:54,743 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 26 remaining) [2024-02-07 14:41:54,744 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 26 remaining) [2024-02-07 14:41:54,745 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 26 remaining) [2024-02-07 14:41:54,745 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 26 remaining) [2024-02-07 14:41:54,745 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 26 remaining) [2024-02-07 14:41:54,745 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 26 remaining) [2024-02-07 14:41:54,745 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 26 remaining) [2024-02-07 14:41:54,745 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 26 remaining) [2024-02-07 14:41:54,745 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 26 remaining) [2024-02-07 14:41:54,745 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 26 remaining) [2024-02-07 14:41:54,746 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 26 remaining) [2024-02-07 14:41:54,746 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 26 remaining) [2024-02-07 14:41:54,746 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 26 remaining) [2024-02-07 14:41:54,746 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 26 remaining) [2024-02-07 14:41:54,746 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 26 remaining) [2024-02-07 14:41:54,746 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (10 of 26 remaining) [2024-02-07 14:41:54,746 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 26 remaining) [2024-02-07 14:41:54,747 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 26 remaining) [2024-02-07 14:41:54,747 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 26 remaining) [2024-02-07 14:41:54,747 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 26 remaining) [2024-02-07 14:41:54,747 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 26 remaining) [2024-02-07 14:41:54,747 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 26 remaining) [2024-02-07 14:41:54,747 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 26 remaining) [2024-02-07 14:41:54,747 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 26 remaining) [2024-02-07 14:41:54,748 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 26 remaining) [2024-02-07 14:41:54,748 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 26 remaining) [2024-02-07 14:41:54,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-02-07 14:41:54,748 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:41:54,753 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-02-07 14:41:54,753 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-02-07 14:41:54,780 WARN L1574 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2024-02-07 14:41:54,781 WARN L1574 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2024-02-07 14:41:54,782 WARN L1574 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2024-02-07 14:41:54,782 WARN L1574 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2024-02-07 14:41:54,783 WARN L1574 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2024-02-07 14:41:54,789 INFO L503 ceAbstractionStarter]: Automizer considered 14 witness invariants [2024-02-07 14:41:54,790 INFO L504 ceAbstractionStarter]: WitnessConsidered=14 [2024-02-07 14:41:54,790 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.02 02:41:54 BasicIcfg [2024-02-07 14:41:54,790 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-02-07 14:41:54,790 INFO L158 Benchmark]: Toolchain (without parser) took 9280.42ms. Allocated memory was 182.5MB in the beginning and 727.7MB in the end (delta: 545.3MB). Free memory was 109.4MB in the beginning and 564.8MB in the end (delta: -455.3MB). Peak memory consumption was 91.4MB. Max. memory is 16.1GB. [2024-02-07 14:41:54,791 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 182.5MB. Free memory is still 139.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 14:41:54,791 INFO L158 Benchmark]: Witness Parser took 0.14ms. Allocated memory is still 182.5MB. Free memory is still 112.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 14:41:54,791 INFO L158 Benchmark]: CACSL2BoogieTranslator took 285.12ms. Allocated memory is still 182.5MB. Free memory was 109.2MB in the beginning and 153.0MB in the end (delta: -43.8MB). Peak memory consumption was 22.2MB. Max. memory is 16.1GB. [2024-02-07 14:41:54,791 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.21ms. Allocated memory is still 182.5MB. Free memory was 152.7MB in the beginning and 149.2MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-02-07 14:41:54,791 INFO L158 Benchmark]: Boogie Preprocessor took 76.28ms. Allocated memory is still 182.5MB. Free memory was 149.2MB in the beginning and 144.4MB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-02-07 14:41:54,792 INFO L158 Benchmark]: RCFGBuilder took 1130.02ms. Allocated memory is still 182.5MB. Free memory was 144.4MB in the beginning and 75.3MB in the end (delta: 69.0MB). Peak memory consumption was 99.4MB. Max. memory is 16.1GB. [2024-02-07 14:41:54,792 INFO L158 Benchmark]: TraceAbstraction took 7730.53ms. Allocated memory was 182.5MB in the beginning and 727.7MB in the end (delta: 545.3MB). Free memory was 74.3MB in the beginning and 564.8MB in the end (delta: -490.4MB). Peak memory consumption was 55.8MB. Max. memory is 16.1GB. [2024-02-07 14:41:54,793 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 182.5MB. Free memory is still 139.2MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.14ms. Allocated memory is still 182.5MB. Free memory is still 112.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 285.12ms. Allocated memory is still 182.5MB. Free memory was 109.2MB in the beginning and 153.0MB in the end (delta: -43.8MB). Peak memory consumption was 22.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.21ms. Allocated memory is still 182.5MB. Free memory was 152.7MB in the beginning and 149.2MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 76.28ms. Allocated memory is still 182.5MB. Free memory was 149.2MB in the beginning and 144.4MB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1130.02ms. Allocated memory is still 182.5MB. Free memory was 144.4MB in the beginning and 75.3MB in the end (delta: 69.0MB). Peak memory consumption was 99.4MB. Max. memory is 16.1GB. * TraceAbstraction took 7730.53ms. Allocated memory was 182.5MB in the beginning and 727.7MB in the end (delta: 545.3MB). Free memory was 74.3MB in the beginning and 564.8MB in the end (delta: -490.4MB). Peak memory consumption was 55.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 53]: invariant of correctness witness can be violated invariant of correctness witness can be violated We found a FailurePath: [L41] 0 int *produce, *update, *queue1, **consume; [L42] 0 _Bool *done; [L43] 0 int front1, size1, state11, state12, state21, state22; [L44] 0 int n_queue, n_produce, n_update, n1, n2; [L45] 0 _Bool finished1, finished2; [L105] 0 pthread_t t1, t2, t3; [L107] 0 front1 = __VERIFIER_nondet_int() [L108] 0 state11 = __VERIFIER_nondet_int() [L109] 0 state21 = state11 [L110] 0 state12 = __VERIFIER_nondet_int() [L111] 0 state22 = state12 [L113] 0 n_queue = __VERIFIER_nondet_int() [L114] 0 n_produce = __VERIFIER_nondet_int() [L115] 0 n_update = __VERIFIER_nondet_int() [L116] 0 n1 = __VERIFIER_nondet_int() [L117] 0 n2 = __VERIFIER_nondet_int() [L119] CALL, EXPR 0 create_fresh_int_array(n_produce) [L145] CALL 0 assume_abort_if_not(size >= 0) [L38] COND FALSE 0 !(!cond) [L145] RET 0 assume_abort_if_not(size >= 0) [L146] CALL 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L38] COND FALSE 0 !(!cond) [L146] RET 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L148] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L149] 0 int i = 0; VAL [\old(size)=0, arr={-2:0}, consume={0:0}, done={0:0}, finished1=0, finished2=0, front1=-2147483648, i=0, n1=0, n2=0, n_produce=0, n_queue=0, n_update=0, produce={0:0}, queue1={0:0}, size1=0, size=0, state11=0, state12=0, state21=0, state22=0, update={0:0}] [L149] COND FALSE 0 !(i < size) [L152] 0 return arr; [L119] RET, EXPR 0 create_fresh_int_array(n_produce) [L119] 0 produce = create_fresh_int_array(n_produce) [L120] CALL, EXPR 0 create_fresh_int_array(n_update) [L145] CALL 0 assume_abort_if_not(size >= 0) [L38] COND FALSE 0 !(!cond) [L145] RET 0 assume_abort_if_not(size >= 0) [L146] CALL 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L38] COND FALSE 0 !(!cond) [L146] RET 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L148] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L149] 0 int i = 0; VAL [\old(size)=0, arr={-3:0}, consume={0:0}, done={0:0}, finished1=0, finished2=0, front1=-2147483648, i=0, n1=0, n2=0, n_produce=0, n_queue=0, n_update=0, produce={-2:0}, queue1={0:0}, size1=0, size=0, state11=0, state12=0, state21=0, state22=0, update={0:0}] [L149] COND FALSE 0 !(i < size) [L152] 0 return arr; [L120] RET, EXPR 0 create_fresh_int_array(n_update) [L120] 0 update = create_fresh_int_array(n_update) [L121] CALL, EXPR 0 create_fresh_int_array(n_queue) [L145] CALL 0 assume_abort_if_not(size >= 0) [L38] COND FALSE 0 !(!cond) [L145] RET 0 assume_abort_if_not(size >= 0) [L146] CALL 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L38] COND FALSE 0 !(!cond) [L146] RET 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L148] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L149] 0 int i = 0; VAL [\old(size)=0, arr={-4:0}, consume={0:0}, done={0:0}, finished1=0, finished2=0, front1=-2147483648, i=0, n1=0, n2=0, n_produce=0, n_queue=0, n_update=0, produce={-2:0}, queue1={0:0}, size1=0, size=0, state11=0, state12=0, state21=0, state22=0, update={-3:0}] [L149] COND FALSE 0 !(i < size) [L152] 0 return arr; [L121] RET, EXPR 0 create_fresh_int_array(n_queue) [L121] 0 queue1 = create_fresh_int_array(n_queue) [L122] CALL, EXPR 0 create_fresh_bool_array(n_update) [L156] CALL 0 assume_abort_if_not(size >= 0) [L38] COND FALSE 0 !(!cond) [L156] RET 0 assume_abort_if_not(size >= 0) [L157] CALL 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(_Bool))) [L38] COND FALSE 0 !(!cond) [L157] RET 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(_Bool))) [L159] 0 _Bool* arr = (_Bool*)malloc(sizeof(_Bool) * (size_t)size); [L160] 0 int i = 0; VAL [\old(size)=0, arr={-5:0}, consume={0:0}, done={0:0}, finished1=0, finished2=0, front1=-2147483648, i=0, n1=0, n2=0, n_produce=0, n_queue=0, n_update=0, produce={-2:0}, queue1={-4:0}, size1=0, size=0, state11=0, state12=0, state21=0, state22=0, update={-3:0}] [L160] COND FALSE 0 !(i < size) [L163] 0 return arr; [L122] RET, EXPR 0 create_fresh_bool_array(n_update) [L122] 0 done = create_fresh_bool_array(n_update) [L123] CALL 0 assume_abort_if_not(n1 >= 0) [L38] COND FALSE 0 !(!cond) [L123] RET 0 assume_abort_if_not(n1 >= 0) [L124] CALL 0 assume_abort_if_not(n1 <= (((size_t) 4294967295) / sizeof(int*))) [L38] COND FALSE 0 !(!cond) [L124] RET 0 assume_abort_if_not(n1 <= (((size_t) 4294967295) / sizeof(int*))) [L125] 0 consume = (int**)malloc(sizeof(int*) * (size_t)n1) [L126] 0 int i=0; VAL [consume={-6:0}, done={-5:0}, finished1=0, finished2=0, front1=-2147483648, i=0, n1=0, n2=0, n_produce=0, n_queue=0, n_update=0, produce={-2:0}, queue1={-4:0}, size1=0, state11=0, state12=0, state21=0, state22=0, t1={5:0}, t2={6:0}, t3={3:0}, update={-3:0}] [L126] COND FALSE 0 !(i