./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-array-sum.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/mutex-meet/popl20-more-array-sum.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b44c8288 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-more-array-sum.wvr.c ./goblint.2024-05-07_14-17-48.files/mutex-meet/popl20-more-array-sum.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-wip.fs.witness-ghost-b44c828-m [2024-05-12 12:27:17,698 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 12:27:17,763 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 12:27:17,767 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 12:27:17,768 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 12:27:17,785 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 12:27:17,786 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 12:27:17,786 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 12:27:17,786 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 12:27:17,787 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 12:27:17,787 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 12:27:17,787 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 12:27:17,787 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 12:27:17,787 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 12:27:17,788 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 12:27:17,790 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 12:27:17,791 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 12:27:17,796 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 12:27:17,796 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 12:27:17,796 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 12:27:17,797 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 12:27:17,797 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 12:27:17,798 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 12:27:17,798 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 12:27:17,798 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 12:27:17,798 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 12:27:17,798 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 12:27:17,798 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 12:27:17,799 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 12:27:17,799 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 12:27:17,799 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 12:27:17,800 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 12:27:17,800 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 12:27:17,800 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 12:27:17,800 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 12:27:17,800 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 12:27:17,800 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 12:27:17,800 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 12:27:17,800 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 12:27:17,800 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 12:27:17,801 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 12:27:17,801 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 12:27:17,801 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 12:27:17,801 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 12:27:18,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 12:27:18,018 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 12:27:18,020 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 12:27:18,020 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 12:27:18,021 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 12:27:18,022 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/mutex-meet/popl20-more-array-sum.wvr.yml/witness.yml [2024-05-12 12:27:18,112 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 12:27:18,113 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 12:27:18,114 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-array-sum.wvr.c [2024-05-12 12:27:19,100 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 12:27:19,255 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 12:27:19,255 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum.wvr.c [2024-05-12 12:27:19,263 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18c5cdff4/57170e6743144c2c9b6a5fb75ddb8107/FLAGddfefc2be [2024-05-12 12:27:19,276 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18c5cdff4/57170e6743144c2c9b6a5fb75ddb8107 [2024-05-12 12:27:19,277 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 12:27:19,277 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 12:27:19,279 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 12:27:19,279 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 12:27:19,283 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 12:27:19,283 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 12:27:18" (1/2) ... [2024-05-12 12:27:19,284 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d85f3f1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:27:19, skipping insertion in model container [2024-05-12 12:27:19,285 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 12:27:18" (1/2) ... [2024-05-12 12:27:19,286 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@62ad1991 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:27:19, skipping insertion in model container [2024-05-12 12:27:19,286 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 12:27:19" (2/2) ... [2024-05-12 12:27:19,287 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d85f3f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:27:19, skipping insertion in model container [2024-05-12 12:27:19,287 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 12:27:19" (2/2) ... [2024-05-12 12:27:19,288 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 12:27:19,302 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 12:27:19,303 INFO L97 edCorrectnessWitness]: Location invariant before [L99-L99] ! multithreaded || ((((4294967296LL + (long long )M) + (long long )N >= 0LL && (4294967295LL - (long long )M) + (long long )N >= 0LL) && (4294967295LL + (long long )M) - (long long )N >= 0LL) && (4294967294LL - (long long )M) - (long long )N >= 0LL) [2024-05-12 12:27:19,303 INFO L97 edCorrectnessWitness]: Location invariant before [L100-L100] ! multithreaded || ((((4294967296LL + (long long )M) + (long long )N >= 0LL && (4294967295LL - (long long )M) + (long long )N >= 0LL) && (4294967295LL + (long long )M) - (long long )N >= 0LL) && (4294967294LL - (long long )M) - (long long )N >= 0LL) [2024-05-12 12:27:19,304 INFO L97 edCorrectnessWitness]: Location invariant before [L101-L101] ! multithreaded || ((((4294967296LL + (long long )M) + (long long )N >= 0LL && (4294967295LL - (long long )M) + (long long )N >= 0LL) && (4294967295LL + (long long )M) - (long long )N >= 0LL) && (4294967294LL - (long long )M) - (long long )N >= 0LL) [2024-05-12 12:27:19,304 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 12:27:19,304 INFO L106 edCorrectnessWitness]: ghost_update [L98-L98] multithreaded = 1; [2024-05-12 12:27:19,322 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 12:27:19,535 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum.wvr.c[2835,2848] [2024-05-12 12:27:19,546 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 12:27:19,552 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 12:27:19,609 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum.wvr.c[2835,2848] [2024-05-12 12:27:19,614 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 12:27:19,627 INFO L206 MainTranslator]: Completed translation [2024-05-12 12:27:19,627 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:27:19 WrapperNode [2024-05-12 12:27:19,627 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 12:27:19,628 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 12:27:19,628 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 12:27:19,628 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 12:27:19,633 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:27:19" (1/1) ... [2024-05-12 12:27:19,639 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:27:19" (1/1) ... [2024-05-12 12:27:19,663 INFO L138 Inliner]: procedures = 25, calls = 58, calls flagged for inlining = 16, calls inlined = 28, statements flattened = 297 [2024-05-12 12:27:19,664 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 12:27:19,664 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 12:27:19,665 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 12:27:19,665 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 12:27:19,673 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:27:19" (1/1) ... [2024-05-12 12:27:19,673 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:27:19" (1/1) ... [2024-05-12 12:27:19,676 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:27:19" (1/1) ... [2024-05-12 12:27:19,692 INFO L175 MemorySlicer]: Split 16 memory accesses to 5 slices as follows [2, 8, 2, 2, 2]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 5 writes are split as follows [0, 2, 1, 1, 1]. [2024-05-12 12:27:19,692 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:27:19" (1/1) ... [2024-05-12 12:27:19,692 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:27:19" (1/1) ... [2024-05-12 12:27:19,699 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:27:19" (1/1) ... [2024-05-12 12:27:19,701 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:27:19" (1/1) ... [2024-05-12 12:27:19,703 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:27:19" (1/1) ... [2024-05-12 12:27:19,704 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:27:19" (1/1) ... [2024-05-12 12:27:19,707 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 12:27:19,708 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 12:27:19,708 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 12:27:19,708 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 12:27:19,712 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:27:19" (1/1) ... [2024-05-12 12:27:19,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 12:27:19,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 12:27:19,737 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) [2024-05-12 12:27:19,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 12:27:19,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 12:27:19,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 12:27:19,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 12:27:19,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 12:27:19,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-05-12 12:27:19,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-05-12 12:27:19,755 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 [2024-05-12 12:27:19,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-05-12 12:27:19,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-05-12 12:27:19,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-05-12 12:27:19,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-05-12 12:27:19,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-05-12 12:27:19,769 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-05-12 12:27:19,770 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-05-12 12:27:19,772 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-05-12 12:27:19,772 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-05-12 12:27:19,772 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-05-12 12:27:19,772 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-05-12 12:27:19,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 12:27:19,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 12:27:19,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 12:27:19,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-05-12 12:27:19,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-05-12 12:27:19,773 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-05-12 12:27:19,779 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-05-12 12:27:19,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-05-12 12:27:19,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 12:27:19,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 12:27:19,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 12:27:19,783 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-05-12 12:27:19,880 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 12:27:19,881 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 12:27:20,167 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 12:27:20,168 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 12:27:20,476 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 12:27:20,476 INFO L320 CfgBuilder]: Removed 5 assume(true) statements. [2024-05-12 12:27:20,477 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 12:27:20 BoogieIcfgContainer [2024-05-12 12:27:20,477 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 12:27:20,479 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 12:27:20,479 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 12:27:20,482 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 12:27:20,482 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 12:27:18" (1/4) ... [2024-05-12 12:27:20,483 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ad09459 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 12:27:20, skipping insertion in model container [2024-05-12 12:27:20,483 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 12:27:19" (2/4) ... [2024-05-12 12:27:20,483 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ad09459 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 12:27:20, skipping insertion in model container [2024-05-12 12:27:20,483 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:27:19" (3/4) ... [2024-05-12 12:27:20,485 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ad09459 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 12:27:20, skipping insertion in model container [2024-05-12 12:27:20,485 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 12:27:20" (4/4) ... [2024-05-12 12:27:20,486 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum.wvr.c [2024-05-12 12:27:20,500 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 12:27:20,500 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-05-12 12:27:20,500 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 12:27:20,544 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-05-12 12:27:20,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 48 transitions, 117 flow [2024-05-12 12:27:20,600 INFO L124 PetriNetUnfolderBase]: 5/45 cut-off events. [2024-05-12 12:27:20,600 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-05-12 12:27:20,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 45 events. 5/45 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 53 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-05-12 12:27:20,603 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 48 transitions, 117 flow [2024-05-12 12:27:20,606 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 44 transitions, 106 flow [2024-05-12 12:27:20,615 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 12:27:20,620 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;@53342cde, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 12:27:20,620 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-05-12 12:27:20,626 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 12:27:20,626 INFO L124 PetriNetUnfolderBase]: 2/10 cut-off events. [2024-05-12 12:27:20,626 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 12:27:20,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:27:20,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:27:20,627 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:27:20,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:27:20,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1910173167, now seen corresponding path program 1 times [2024-05-12 12:27:20,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:27:20,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485378266] [2024-05-12 12:27:20,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:27:20,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:27:20,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:27:20,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:27:20,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:27:20,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485378266] [2024-05-12 12:27:20,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485378266] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:27:20,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:27:20,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 12:27:20,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463352212] [2024-05-12 12:27:20,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:27:20,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 12:27:20,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:27:20,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 12:27:20,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-05-12 12:27:21,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 12:27:21,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 44 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2024-05-12 12:27:21,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:27:21,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 12:27:21,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:27:21,252 INFO L124 PetriNetUnfolderBase]: 822/1250 cut-off events. [2024-05-12 12:27:21,252 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2024-05-12 12:27:21,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2423 conditions, 1250 events. 822/1250 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 5665 event pairs, 464 based on Foata normal form. 0/1208 useless extension candidates. Maximal degree in co-relation 2110. Up to 1105 conditions per place. [2024-05-12 12:27:21,263 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 30 selfloop transitions, 1 changer transitions 0/41 dead transitions. [2024-05-12 12:27:21,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 41 transitions, 162 flow [2024-05-12 12:27:21,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 12:27:21,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 12:27:21,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2024-05-12 12:27:21,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5069444444444444 [2024-05-12 12:27:21,273 INFO L175 Difference]: Start difference. First operand has 49 places, 44 transitions, 106 flow. Second operand 3 states and 73 transitions. [2024-05-12 12:27:21,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 41 transitions, 162 flow [2024-05-12 12:27:21,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 41 transitions, 150 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-05-12 12:27:21,280 INFO L231 Difference]: Finished difference. Result has 42 places, 41 transitions, 90 flow [2024-05-12 12:27:21,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=42, PETRI_TRANSITIONS=41} [2024-05-12 12:27:21,284 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -7 predicate places. [2024-05-12 12:27:21,284 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 41 transitions, 90 flow [2024-05-12 12:27:21,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2024-05-12 12:27:21,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:27:21,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:27:21,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 12:27:21,285 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:27:21,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:27:21,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1697000990, now seen corresponding path program 1 times [2024-05-12 12:27:21,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:27:21,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003253231] [2024-05-12 12:27:21,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:27:21,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:27:21,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:27:21,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:27:21,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:27:21,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003253231] [2024-05-12 12:27:21,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003253231] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:27:21,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:27:21,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 12:27:21,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265582397] [2024-05-12 12:27:21,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:27:21,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 12:27:21,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:27:21,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 12:27:21,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-05-12 12:27:21,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-05-12 12:27:21,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 41 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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) [2024-05-12 12:27:21,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:27:21,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-05-12 12:27:21,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:27:21,674 INFO L124 PetriNetUnfolderBase]: 823/1255 cut-off events. [2024-05-12 12:27:21,676 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-05-12 12:27:21,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2390 conditions, 1255 events. 823/1255 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 5677 event pairs, 464 based on Foata normal form. 0/1212 useless extension candidates. Maximal degree in co-relation 2384. Up to 1106 conditions per place. [2024-05-12 12:27:21,683 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 29 selfloop transitions, 4 changer transitions 3/46 dead transitions. [2024-05-12 12:27:21,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 46 transitions, 172 flow [2024-05-12 12:27:21,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 12:27:21,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 12:27:21,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-05-12 12:27:21,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49583333333333335 [2024-05-12 12:27:21,692 INFO L175 Difference]: Start difference. First operand has 42 places, 41 transitions, 90 flow. Second operand 5 states and 119 transitions. [2024-05-12 12:27:21,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 46 transitions, 172 flow [2024-05-12 12:27:21,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 46 transitions, 171 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 12:27:21,695 INFO L231 Difference]: Finished difference. Result has 48 places, 43 transitions, 117 flow [2024-05-12 12:27:21,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=117, PETRI_PLACES=48, PETRI_TRANSITIONS=43} [2024-05-12 12:27:21,696 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -1 predicate places. [2024-05-12 12:27:21,696 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 43 transitions, 117 flow [2024-05-12 12:27:21,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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) [2024-05-12 12:27:21,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:27:21,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:27:21,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 12:27:21,697 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:27:21,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:27:21,698 INFO L85 PathProgramCache]: Analyzing trace with hash 765030785, now seen corresponding path program 1 times [2024-05-12 12:27:21,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:27:21,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462144168] [2024-05-12 12:27:21,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:27:21,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:27:21,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:27:21,792 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-05-12 12:27:21,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:27:21,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462144168] [2024-05-12 12:27:21,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462144168] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:27:21,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:27:21,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 12:27:21,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209238965] [2024-05-12 12:27:21,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:27:21,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 12:27:21,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:27:21,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 12:27:21,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 12:27:21,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 12:27:21,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 43 transitions, 117 flow. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2024-05-12 12:27:21,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:27:21,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 12:27:21,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:27:22,073 INFO L124 PetriNetUnfolderBase]: 1844/2730 cut-off events. [2024-05-12 12:27:22,074 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-05-12 12:27:22,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5301 conditions, 2730 events. 1844/2730 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 14230 event pairs, 306 based on Foata normal form. 1/2701 useless extension candidates. Maximal degree in co-relation 5291. Up to 2155 conditions per place. [2024-05-12 12:27:22,085 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 53 selfloop transitions, 4 changer transitions 1/65 dead transitions. [2024-05-12 12:27:22,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 65 transitions, 282 flow [2024-05-12 12:27:22,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 12:27:22,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 12:27:22,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2024-05-12 12:27:22,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-05-12 12:27:22,086 INFO L175 Difference]: Start difference. First operand has 48 places, 43 transitions, 117 flow. Second operand 3 states and 96 transitions. [2024-05-12 12:27:22,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 65 transitions, 282 flow [2024-05-12 12:27:22,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 65 transitions, 272 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-05-12 12:27:22,088 INFO L231 Difference]: Finished difference. Result has 46 places, 46 transitions, 133 flow [2024-05-12 12:27:22,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=46, PETRI_TRANSITIONS=46} [2024-05-12 12:27:22,089 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -3 predicate places. [2024-05-12 12:27:22,089 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 46 transitions, 133 flow [2024-05-12 12:27:22,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2024-05-12 12:27:22,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:27:22,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:27:22,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 12:27:22,090 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:27:22,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:27:22,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1868457832, now seen corresponding path program 1 times [2024-05-12 12:27:22,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:27:22,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473859203] [2024-05-12 12:27:22,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:27:22,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:27:22,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:27:22,184 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-05-12 12:27:22,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:27:22,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473859203] [2024-05-12 12:27:22,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473859203] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:27:22,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:27:22,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 12:27:22,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678806639] [2024-05-12 12:27:22,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:27:22,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 12:27:22,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:27:22,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 12:27:22,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-05-12 12:27:22,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-05-12 12:27:22,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 46 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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) [2024-05-12 12:27:22,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:27:22,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-05-12 12:27:22,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:27:22,442 INFO L124 PetriNetUnfolderBase]: 1731/2566 cut-off events. [2024-05-12 12:27:22,443 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2024-05-12 12:27:22,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5175 conditions, 2566 events. 1731/2566 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 14006 event pairs, 535 based on Foata normal form. 0/2431 useless extension candidates. Maximal degree in co-relation 5165. Up to 1236 conditions per place. [2024-05-12 12:27:22,457 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 44 selfloop transitions, 4 changer transitions 0/59 dead transitions. [2024-05-12 12:27:22,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 59 transitions, 257 flow [2024-05-12 12:27:22,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 12:27:22,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 12:27:22,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 103 transitions. [2024-05-12 12:27:22,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5364583333333334 [2024-05-12 12:27:22,460 INFO L175 Difference]: Start difference. First operand has 46 places, 46 transitions, 133 flow. Second operand 4 states and 103 transitions. [2024-05-12 12:27:22,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 59 transitions, 257 flow [2024-05-12 12:27:22,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 59 transitions, 251 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-05-12 12:27:22,464 INFO L231 Difference]: Finished difference. Result has 50 places, 47 transitions, 148 flow [2024-05-12 12:27:22,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=50, PETRI_TRANSITIONS=47} [2024-05-12 12:27:22,465 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 1 predicate places. [2024-05-12 12:27:22,466 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 47 transitions, 148 flow [2024-05-12 12:27:22,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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) [2024-05-12 12:27:22,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:27:22,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:27:22,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 12:27:22,467 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:27:22,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:27:22,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1068722624, now seen corresponding path program 1 times [2024-05-12 12:27:22,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:27:22,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295125483] [2024-05-12 12:27:22,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:27:22,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:27:22,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:27:22,570 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-05-12 12:27:22,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:27:22,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295125483] [2024-05-12 12:27:22,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295125483] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 12:27:22,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663425678] [2024-05-12 12:27:22,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:27:22,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:27:22,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 12:27:22,573 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) [2024-05-12 12:27:22,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-05-12 12:27:22,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:27:22,672 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 6 conjunts are in the unsatisfiable core [2024-05-12 12:27:22,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 12:27:22,716 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-05-12 12:27:22,718 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 12:27:22,751 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-05-12 12:27:22,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663425678] provided 1 perfect and 1 imperfect interpolant sequences [2024-05-12 12:27:22,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-05-12 12:27:22,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-05-12 12:27:22,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662671207] [2024-05-12 12:27:22,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:27:22,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 12:27:22,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:27:22,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 12:27:22,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:27:22,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-05-12 12:27:22,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 47 transitions, 148 flow. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 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) [2024-05-12 12:27:22,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:27:22,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-05-12 12:27:22,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:27:23,008 INFO L124 PetriNetUnfolderBase]: 1666/2481 cut-off events. [2024-05-12 12:27:23,008 INFO L125 PetriNetUnfolderBase]: For 608/693 co-relation queries the response was YES. [2024-05-12 12:27:23,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5471 conditions, 2481 events. 1666/2481 cut-off events. For 608/693 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 12700 event pairs, 426 based on Foata normal form. 85/2357 useless extension candidates. Maximal degree in co-relation 5459. Up to 1264 conditions per place. [2024-05-12 12:27:23,022 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 45 selfloop transitions, 5 changer transitions 0/62 dead transitions. [2024-05-12 12:27:23,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 62 transitions, 286 flow [2024-05-12 12:27:23,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 12:27:23,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 12:27:23,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-05-12 12:27:23,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-05-12 12:27:23,025 INFO L175 Difference]: Start difference. First operand has 50 places, 47 transitions, 148 flow. Second operand 5 states and 120 transitions. [2024-05-12 12:27:23,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 62 transitions, 286 flow [2024-05-12 12:27:23,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 62 transitions, 281 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 12:27:23,028 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 167 flow [2024-05-12 12:27:23,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=167, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2024-05-12 12:27:23,030 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 5 predicate places. [2024-05-12 12:27:23,030 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 167 flow [2024-05-12 12:27:23,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 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) [2024-05-12 12:27:23,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:27:23,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:27:23,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-05-12 12:27:23,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:27:23,249 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:27:23,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:27:23,250 INFO L85 PathProgramCache]: Analyzing trace with hash -2020759041, now seen corresponding path program 1 times [2024-05-12 12:27:23,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:27:23,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764195902] [2024-05-12 12:27:23,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:27:23,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:27:23,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:27:24,272 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:27:24,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:27:24,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764195902] [2024-05-12 12:27:24,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764195902] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 12:27:24,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605865952] [2024-05-12 12:27:24,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:27:24,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:27:24,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 12:27:24,277 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) [2024-05-12 12:27:24,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-05-12 12:27:24,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:27:24,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 51 conjunts are in the unsatisfiable core [2024-05-12 12:27:24,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 12:27:24,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2024-05-12 12:27:24,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 12:27:24,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2024-05-12 12:27:24,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 12:27:24,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2024-05-12 12:27:24,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 12:27:24,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-05-12 12:27:24,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 12:27:24,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2024-05-12 12:27:24,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 12:27:24,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2024-05-12 12:27:24,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 12:27:24,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2024-05-12 12:27:24,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 12:27:24,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-05-12 12:27:24,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 12:27:24,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-05-12 12:27:24,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 12:27:24,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2024-05-12 12:27:24,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 12:27:24,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2024-05-12 12:27:24,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 12:27:24,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-05-12 12:27:24,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 12:27:24,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-05-12 12:27:24,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 12:27:24,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2024-05-12 12:27:24,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 12:27:24,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2024-05-12 12:27:24,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 12:27:24,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-05-12 12:27:24,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 12:27:24,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2024-05-12 12:27:24,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 12:27:24,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-05-12 12:27:24,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 12:27:24,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-05-12 12:27:24,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 12:27:24,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2024-05-12 12:27:24,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 12:27:24,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-05-12 12:27:24,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 12:27:24,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2024-05-12 12:27:24,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 12:27:24,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-05-12 12:27:24,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 12:27:24,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2024-05-12 12:27:24,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-05-12 12:27:24,614 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-05-12 12:27:24,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-05-12 12:27:24,649 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-05-12 12:27:24,910 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-05-12 12:27:24,922 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:27:24,922 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 12:27:35,093 INFO L349 Elim1Store]: treesize reduction 28, result has 64.6 percent of original size [2024-05-12 12:27:35,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 1682 treesize of output 1252 [2024-05-12 12:27:35,137 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-05-12 12:27:35,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 737 treesize of output 693 [2024-05-12 12:27:45,409 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:27:45,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605865952] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 12:27:45,409 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-12 12:27:45,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 32 [2024-05-12 12:27:45,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687636894] [2024-05-12 12:27:45,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-12 12:27:45,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-05-12 12:27:45,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:27:45,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-05-12 12:27:45,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=928, Unknown=3, NotChecked=0, Total=1056 [2024-05-12 12:27:49,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-05-12 12:27:53,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-05-12 12:27:57,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-05-12 12:28:02,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-05-12 12:28:06,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-05-12 12:28:06,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 48 [2024-05-12 12:28:06,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 167 flow. Second operand has 33 states, 33 states have (on average 7.454545454545454) internal successors, (246), 33 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:28:06,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:28:06,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 48 [2024-05-12 12:28:06,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:28:10,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-05-12 12:28:14,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-05-12 12:28:37,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-05-12 12:28:41,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-05-12 12:28:45,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-05-12 12:29:15,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-05-12 12:29:20,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-05-12 12:29:24,245 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-05-12 12:29:27,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-05-12 12:29:27,586 INFO L124 PetriNetUnfolderBase]: 7993/11148 cut-off events. [2024-05-12 12:29:27,586 INFO L125 PetriNetUnfolderBase]: For 5750/5750 co-relation queries the response was YES. [2024-05-12 12:29:27,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29103 conditions, 11148 events. 7993/11148 cut-off events. For 5750/5750 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 56782 event pairs, 851 based on Foata normal form. 2/10342 useless extension candidates. Maximal degree in co-relation 29088. Up to 5137 conditions per place. [2024-05-12 12:29:27,634 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 251 selfloop transitions, 65 changer transitions 2/320 dead transitions. [2024-05-12 12:29:27,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 320 transitions, 1627 flow [2024-05-12 12:29:27,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-05-12 12:29:27,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-05-12 12:29:27,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 438 transitions. [2024-05-12 12:29:27,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.365 [2024-05-12 12:29:27,636 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 167 flow. Second operand 25 states and 438 transitions. [2024-05-12 12:29:27,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 320 transitions, 1627 flow [2024-05-12 12:29:27,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 320 transitions, 1603 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-05-12 12:29:27,652 INFO L231 Difference]: Finished difference. Result has 87 places, 110 transitions, 649 flow [2024-05-12 12:29:27,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=649, PETRI_PLACES=87, PETRI_TRANSITIONS=110} [2024-05-12 12:29:27,654 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 38 predicate places. [2024-05-12 12:29:27,654 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 110 transitions, 649 flow [2024-05-12 12:29:27,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 7.454545454545454) internal successors, (246), 33 states have internal predecessors, (246), 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) [2024-05-12 12:29:27,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:29:27,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:29:27,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-05-12 12:29:27,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-05-12 12:29:27,864 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:29:27,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:29:27,865 INFO L85 PathProgramCache]: Analyzing trace with hash 522932341, now seen corresponding path program 2 times [2024-05-12 12:29:27,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:29:27,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926104019] [2024-05-12 12:29:27,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:29:27,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:29:27,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:29:28,846 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:29:28,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:29:28,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926104019] [2024-05-12 12:29:28,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926104019] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 12:29:28,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581254357] [2024-05-12 12:29:28,847 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-05-12 12:29:28,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:29:28,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 12:29:28,848 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) [2024-05-12 12:29:28,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-05-12 12:29:28,975 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-05-12 12:29:28,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-05-12 12:29:28,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 45 conjunts are in the unsatisfiable core [2024-05-12 12:29:28,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 12:29:29,092 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-05-12 12:29:29,328 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-05-12 12:29:29,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2024-05-12 12:29:29,362 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:29:29,362 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 12:29:29,600 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-05-12 12:29:29,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 248 treesize of output 232 [2024-05-12 12:29:29,801 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-05-12 12:29:29,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 214 treesize of output 190 [2024-05-12 12:29:29,810 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-05-12 12:29:29,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 182 treesize of output 134 [2024-05-12 12:29:29,993 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:29:29,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581254357] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 12:29:29,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-12 12:29:29,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 29 [2024-05-12 12:29:29,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597572601] [2024-05-12 12:29:29,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-12 12:29:29,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-05-12 12:29:29,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:29:29,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-05-12 12:29:29,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=754, Unknown=0, NotChecked=0, Total=870 [2024-05-12 12:29:30,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-05-12 12:29:30,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 110 transitions, 649 flow. Second operand has 30 states, 30 states have (on average 12.666666666666666) internal successors, (380), 30 states have internal predecessors, (380), 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) [2024-05-12 12:29:30,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:29:30,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-05-12 12:29:30,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:29:33,197 INFO L124 PetriNetUnfolderBase]: 8054/11518 cut-off events. [2024-05-12 12:29:33,198 INFO L125 PetriNetUnfolderBase]: For 12082/12082 co-relation queries the response was YES. [2024-05-12 12:29:33,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36058 conditions, 11518 events. 8054/11518 cut-off events. For 12082/12082 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 66249 event pairs, 1422 based on Foata normal form. 1/11500 useless extension candidates. Maximal degree in co-relation 36031. Up to 7154 conditions per place. [2024-05-12 12:29:33,254 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 267 selfloop transitions, 94 changer transitions 1/367 dead transitions. [2024-05-12 12:29:33,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 367 transitions, 2391 flow [2024-05-12 12:29:33,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-05-12 12:29:33,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-05-12 12:29:33,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 619 transitions. [2024-05-12 12:29:33,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4029947916666667 [2024-05-12 12:29:33,258 INFO L175 Difference]: Start difference. First operand has 87 places, 110 transitions, 649 flow. Second operand 32 states and 619 transitions. [2024-05-12 12:29:33,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 367 transitions, 2391 flow [2024-05-12 12:29:33,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 367 transitions, 2235 flow, removed 74 selfloop flow, removed 2 redundant places. [2024-05-12 12:29:33,295 INFO L231 Difference]: Finished difference. Result has 135 places, 183 transitions, 1378 flow [2024-05-12 12:29:33,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1378, PETRI_PLACES=135, PETRI_TRANSITIONS=183} [2024-05-12 12:29:33,296 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 86 predicate places. [2024-05-12 12:29:33,296 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 183 transitions, 1378 flow [2024-05-12 12:29:33,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 12.666666666666666) internal successors, (380), 30 states have internal predecessors, (380), 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) [2024-05-12 12:29:33,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:29:33,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:29:33,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-05-12 12:29:33,511 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 [2024-05-12 12:29:33,511 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:29:33,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:29:33,512 INFO L85 PathProgramCache]: Analyzing trace with hash -758572857, now seen corresponding path program 3 times [2024-05-12 12:29:33,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:29:33,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148337873] [2024-05-12 12:29:33,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:29:33,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:29:33,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:29:34,351 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:29:34,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:29:34,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148337873] [2024-05-12 12:29:34,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148337873] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 12:29:34,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271162878] [2024-05-12 12:29:34,352 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-05-12 12:29:34,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:29:34,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 12:29:34,353 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) [2024-05-12 12:29:34,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-05-12 12:29:34,455 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-05-12 12:29:34,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-05-12 12:29:34,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 48 conjunts are in the unsatisfiable core [2024-05-12 12:29:34,462 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 12:29:34,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-05-12 12:29:34,961 INFO L173 IndexEqualityManager]: detected equality via solver [2024-05-12 12:29:34,977 INFO L349 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2024-05-12 12:29:34,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 25 [2024-05-12 12:29:35,123 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:29:35,123 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 12:29:35,499 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-05-12 12:29:35,499 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 256 treesize of output 240 [2024-05-12 12:29:35,694 INFO L173 IndexEqualityManager]: detected equality via solver [2024-05-12 12:29:35,706 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-05-12 12:29:35,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 113 treesize of output 89 [2024-05-12 12:29:35,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 12:29:35,741 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-05-12 12:29:35,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 196 treesize of output 134 [2024-05-12 12:29:35,821 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-05-12 12:29:35,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 417 treesize of output 353 [2024-05-12 12:29:35,839 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-05-12 12:29:35,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 254 treesize of output 204 [2024-05-12 12:29:36,047 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:29:36,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271162878] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 12:29:36,047 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-12 12:29:36,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 36 [2024-05-12 12:29:36,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396849446] [2024-05-12 12:29:36,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-12 12:29:36,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-05-12 12:29:36,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:29:36,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-05-12 12:29:36,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1148, Unknown=0, NotChecked=0, Total=1332 [2024-05-12 12:29:36,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 48 [2024-05-12 12:29:36,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 183 transitions, 1378 flow. Second operand has 37 states, 37 states have (on average 8.567567567567568) internal successors, (317), 37 states have internal predecessors, (317), 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) [2024-05-12 12:29:36,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:29:36,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 48 [2024-05-12 12:29:36,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:29:42,162 INFO L124 PetriNetUnfolderBase]: 16596/23343 cut-off events. [2024-05-12 12:29:42,162 INFO L125 PetriNetUnfolderBase]: For 64606/64606 co-relation queries the response was YES. [2024-05-12 12:29:42,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87185 conditions, 23343 events. 16596/23343 cut-off events. For 64606/64606 co-relation queries the response was YES. Maximal size of possible extension queue 1052. Compared 143182 event pairs, 1775 based on Foata normal form. 3/23334 useless extension candidates. Maximal degree in co-relation 87139. Up to 11017 conditions per place. [2024-05-12 12:29:42,445 INFO L140 encePairwiseOnDemand]: 31/48 looper letters, 464 selfloop transitions, 243 changer transitions 9/719 dead transitions. [2024-05-12 12:29:42,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 719 transitions, 5525 flow [2024-05-12 12:29:42,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-05-12 12:29:42,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2024-05-12 12:29:42,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 850 transitions. [2024-05-12 12:29:42,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-05-12 12:29:42,455 INFO L175 Difference]: Start difference. First operand has 135 places, 183 transitions, 1378 flow. Second operand 50 states and 850 transitions. [2024-05-12 12:29:42,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 719 transitions, 5525 flow [2024-05-12 12:29:42,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 719 transitions, 5410 flow, removed 49 selfloop flow, removed 7 redundant places. [2024-05-12 12:29:42,749 INFO L231 Difference]: Finished difference. Result has 191 places, 358 transitions, 3805 flow [2024-05-12 12:29:42,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1315, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=3805, PETRI_PLACES=191, PETRI_TRANSITIONS=358} [2024-05-12 12:29:42,750 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 142 predicate places. [2024-05-12 12:29:42,750 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 358 transitions, 3805 flow [2024-05-12 12:29:42,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 8.567567567567568) internal successors, (317), 37 states have internal predecessors, (317), 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) [2024-05-12 12:29:42,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:29:42,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:29:42,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-05-12 12:29:42,961 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 [2024-05-12 12:29:42,961 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:29:42,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:29:42,962 INFO L85 PathProgramCache]: Analyzing trace with hash -378686101, now seen corresponding path program 4 times [2024-05-12 12:29:42,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:29:42,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205569568] [2024-05-12 12:29:42,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:29:42,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:29:42,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:29:43,862 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:29:43,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:29:43,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205569568] [2024-05-12 12:29:43,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205569568] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 12:29:43,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322824805] [2024-05-12 12:29:43,862 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-05-12 12:29:43,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:29:43,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 12:29:43,864 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) [2024-05-12 12:29:43,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-05-12 12:29:43,951 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-05-12 12:29:43,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-05-12 12:29:43,953 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 46 conjunts are in the unsatisfiable core [2024-05-12 12:29:43,954 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 12:29:44,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-05-12 12:29:44,309 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-05-12 12:29:44,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2024-05-12 12:29:44,357 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-05-12 12:29:44,358 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 12:29:44,620 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-05-12 12:29:44,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 248 treesize of output 232 [2024-05-12 12:29:44,818 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-05-12 12:29:44,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 214 treesize of output 190 [2024-05-12 12:29:44,832 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-05-12 12:29:44,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 166 treesize of output 130 [2024-05-12 12:29:44,946 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-05-12 12:29:44,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322824805] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 12:29:44,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-12 12:29:44,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 10] total 29 [2024-05-12 12:29:44,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078729477] [2024-05-12 12:29:44,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-12 12:29:44,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-05-12 12:29:44,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:29:44,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-05-12 12:29:44,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=763, Unknown=0, NotChecked=0, Total=870 [2024-05-12 12:29:45,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-05-12 12:29:45,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 358 transitions, 3805 flow. Second operand has 30 states, 30 states have (on average 12.733333333333333) internal successors, (382), 30 states have internal predecessors, (382), 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) [2024-05-12 12:29:45,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:29:45,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-05-12 12:29:45,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:29:49,873 INFO L124 PetriNetUnfolderBase]: 16254/23187 cut-off events. [2024-05-12 12:29:49,874 INFO L125 PetriNetUnfolderBase]: For 122072/122072 co-relation queries the response was YES. [2024-05-12 12:29:49,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105072 conditions, 23187 events. 16254/23187 cut-off events. For 122072/122072 co-relation queries the response was YES. Maximal size of possible extension queue 1138. Compared 147410 event pairs, 2522 based on Foata normal form. 1/23178 useless extension candidates. Maximal degree in co-relation 105011. Up to 17057 conditions per place. [2024-05-12 12:29:50,061 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 357 selfloop transitions, 230 changer transitions 1/593 dead transitions. [2024-05-12 12:29:50,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 593 transitions, 6677 flow [2024-05-12 12:29:50,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-05-12 12:29:50,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-05-12 12:29:50,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 470 transitions. [2024-05-12 12:29:50,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4257246376811594 [2024-05-12 12:29:50,063 INFO L175 Difference]: Start difference. First operand has 191 places, 358 transitions, 3805 flow. Second operand 23 states and 470 transitions. [2024-05-12 12:29:50,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 593 transitions, 6677 flow [2024-05-12 12:29:51,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 593 transitions, 5733 flow, removed 438 selfloop flow, removed 11 redundant places. [2024-05-12 12:29:51,467 INFO L231 Difference]: Finished difference. Result has 209 places, 444 transitions, 4667 flow [2024-05-12 12:29:51,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3148, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=4667, PETRI_PLACES=209, PETRI_TRANSITIONS=444} [2024-05-12 12:29:51,468 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 160 predicate places. [2024-05-12 12:29:51,468 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 444 transitions, 4667 flow [2024-05-12 12:29:51,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 12.733333333333333) internal successors, (382), 30 states have internal predecessors, (382), 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) [2024-05-12 12:29:51,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:29:51,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:29:51,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-05-12 12:29:51,680 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 [2024-05-12 12:29:51,680 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:29:51,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:29:51,680 INFO L85 PathProgramCache]: Analyzing trace with hash -623167885, now seen corresponding path program 5 times [2024-05-12 12:29:51,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:29:51,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93281988] [2024-05-12 12:29:51,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:29:51,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:29:51,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:29:52,624 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:29:52,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:29:52,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93281988] [2024-05-12 12:29:52,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93281988] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 12:29:52,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390566874] [2024-05-12 12:29:52,624 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-05-12 12:29:52,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:29:52,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 12:29:52,625 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-12 12:29:52,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-05-12 12:29:52,722 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-05-12 12:29:52,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-05-12 12:29:52,723 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 45 conjunts are in the unsatisfiable core [2024-05-12 12:29:52,729 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 12:29:52,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-05-12 12:29:53,246 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-05-12 12:29:53,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2024-05-12 12:29:53,260 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:29:53,261 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 12:29:53,686 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-05-12 12:29:53,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 256 treesize of output 240 [2024-05-12 12:29:53,902 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-05-12 12:29:53,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 267 treesize of output 227 [2024-05-12 12:29:53,916 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-05-12 12:29:53,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 166 treesize of output 134 [2024-05-12 12:29:54,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 12:29:54,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 50 [2024-05-12 12:29:54,054 INFO L349 Elim1Store]: treesize reduction 5, result has 82.8 percent of original size [2024-05-12 12:29:54,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 172 treesize of output 139 [2024-05-12 12:29:54,146 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-05-12 12:29:54,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 369 treesize of output 313 [2024-05-12 12:29:54,162 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-05-12 12:29:54,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 236 treesize of output 192 [2024-05-12 12:29:54,393 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:29:54,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390566874] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 12:29:54,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-12 12:29:54,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 32 [2024-05-12 12:29:54,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415103656] [2024-05-12 12:29:54,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-12 12:29:54,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-05-12 12:29:54,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:29:54,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-05-12 12:29:54,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=912, Unknown=0, NotChecked=0, Total=1056 [2024-05-12 12:29:58,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-05-12 12:30:02,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-05-12 12:30:06,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-05-12 12:30:06,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2024-05-12 12:30:06,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 444 transitions, 4667 flow. Second operand has 33 states, 33 states have (on average 9.484848484848484) internal successors, (313), 33 states have internal predecessors, (313), 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) [2024-05-12 12:30:06,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:30:06,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2024-05-12 12:30:06,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:30:13,178 INFO L124 PetriNetUnfolderBase]: 18970/27097 cut-off events. [2024-05-12 12:30:13,178 INFO L125 PetriNetUnfolderBase]: For 131750/131750 co-relation queries the response was YES. [2024-05-12 12:30:13,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121822 conditions, 27097 events. 18970/27097 cut-off events. For 131750/131750 co-relation queries the response was YES. Maximal size of possible extension queue 1384. Compared 178328 event pairs, 3108 based on Foata normal form. 2/27090 useless extension candidates. Maximal degree in co-relation 121753. Up to 20914 conditions per place. [2024-05-12 12:30:13,394 INFO L140 encePairwiseOnDemand]: 32/48 looper letters, 564 selfloop transitions, 201 changer transitions 2/772 dead transitions. [2024-05-12 12:30:13,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 772 transitions, 8003 flow [2024-05-12 12:30:13,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-05-12 12:30:13,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2024-05-12 12:30:13,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 659 transitions. [2024-05-12 12:30:13,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38136574074074076 [2024-05-12 12:30:13,406 INFO L175 Difference]: Start difference. First operand has 209 places, 444 transitions, 4667 flow. Second operand 36 states and 659 transitions. [2024-05-12 12:30:13,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 772 transitions, 8003 flow [2024-05-12 12:30:14,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 772 transitions, 7808 flow, removed 89 selfloop flow, removed 5 redundant places. [2024-05-12 12:30:14,407 INFO L231 Difference]: Finished difference. Result has 249 places, 511 transitions, 5936 flow [2024-05-12 12:30:14,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4532, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=5936, PETRI_PLACES=249, PETRI_TRANSITIONS=511} [2024-05-12 12:30:14,408 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 200 predicate places. [2024-05-12 12:30:14,408 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 511 transitions, 5936 flow [2024-05-12 12:30:14,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 9.484848484848484) internal successors, (313), 33 states have internal predecessors, (313), 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) [2024-05-12 12:30:14,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:30:14,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:30:14,419 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-05-12 12:30:14,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:30:14,619 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:30:14,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:30:14,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1110141461, now seen corresponding path program 6 times [2024-05-12 12:30:14,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:30:14,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342262436] [2024-05-12 12:30:14,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:30:14,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:30:14,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:30:15,278 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:30:15,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:30:15,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342262436] [2024-05-12 12:30:15,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342262436] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 12:30:15,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216432939] [2024-05-12 12:30:15,279 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-05-12 12:30:15,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:30:15,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 12:30:15,279 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-12 12:30:15,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-05-12 12:30:15,401 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-05-12 12:30:15,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-05-12 12:30:15,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 45 conjunts are in the unsatisfiable core [2024-05-12 12:30:15,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 12:30:15,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-05-12 12:30:15,713 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-05-12 12:30:15,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2024-05-12 12:30:15,738 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:30:15,739 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 12:30:15,978 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-05-12 12:30:15,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 256 treesize of output 240 [2024-05-12 12:30:16,195 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-05-12 12:30:16,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 283 treesize of output 243 [2024-05-12 12:30:16,211 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-05-12 12:30:16,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 166 treesize of output 130 [2024-05-12 12:30:16,377 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:30:16,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216432939] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 12:30:16,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-12 12:30:16,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 30 [2024-05-12 12:30:16,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198326070] [2024-05-12 12:30:16,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-12 12:30:16,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-05-12 12:30:16,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:30:16,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-05-12 12:30:16,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=809, Unknown=0, NotChecked=0, Total=930 [2024-05-12 12:30:16,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-05-12 12:30:16,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 511 transitions, 5936 flow. Second operand has 31 states, 31 states have (on average 12.64516129032258) internal successors, (392), 31 states have internal predecessors, (392), 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) [2024-05-12 12:30:16,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:30:16,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-05-12 12:30:16,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:30:23,358 INFO L124 PetriNetUnfolderBase]: 22883/32594 cut-off events. [2024-05-12 12:30:23,358 INFO L125 PetriNetUnfolderBase]: For 192022/192022 co-relation queries the response was YES. [2024-05-12 12:30:23,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155045 conditions, 32594 events. 22883/32594 cut-off events. For 192022/192022 co-relation queries the response was YES. Maximal size of possible extension queue 1690. Compared 219364 event pairs, 3581 based on Foata normal form. 1/32587 useless extension candidates. Maximal degree in co-relation 154965. Up to 25621 conditions per place. [2024-05-12 12:30:23,846 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 615 selfloop transitions, 204 changer transitions 1/825 dead transitions. [2024-05-12 12:30:23,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 825 transitions, 10083 flow [2024-05-12 12:30:23,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-05-12 12:30:23,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-05-12 12:30:23,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 650 transitions. [2024-05-12 12:30:23,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4231770833333333 [2024-05-12 12:30:23,849 INFO L175 Difference]: Start difference. First operand has 249 places, 511 transitions, 5936 flow. Second operand 32 states and 650 transitions. [2024-05-12 12:30:23,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 825 transitions, 10083 flow [2024-05-12 12:30:25,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 825 transitions, 9663 flow, removed 103 selfloop flow, removed 18 redundant places. [2024-05-12 12:30:25,384 INFO L231 Difference]: Finished difference. Result has 273 places, 624 transitions, 7811 flow [2024-05-12 12:30:25,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5555, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=7811, PETRI_PLACES=273, PETRI_TRANSITIONS=624} [2024-05-12 12:30:25,384 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 224 predicate places. [2024-05-12 12:30:25,384 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 624 transitions, 7811 flow [2024-05-12 12:30:25,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 12.64516129032258) internal successors, (392), 31 states have internal predecessors, (392), 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) [2024-05-12 12:30:25,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:30:25,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:30:25,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-05-12 12:30:25,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:30:25,591 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:30:25,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:30:25,592 INFO L85 PathProgramCache]: Analyzing trace with hash 54982881, now seen corresponding path program 7 times [2024-05-12 12:30:25,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:30:25,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562736719] [2024-05-12 12:30:25,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:30:25,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:30:25,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:30:26,305 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:30:26,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:30:26,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562736719] [2024-05-12 12:30:26,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562736719] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 12:30:26,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048172424] [2024-05-12 12:30:26,305 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-05-12 12:30:26,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:30:26,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 12:30:26,306 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-12 12:30:26,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-05-12 12:30:26,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:30:26,398 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 53 conjunts are in the unsatisfiable core [2024-05-12 12:30:26,408 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 12:30:26,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-05-12 12:30:26,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 12:30:26,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-05-12 12:30:26,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 12:30:26,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2024-05-12 12:30:26,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 12:30:26,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-05-12 12:30:26,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 12:30:26,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2024-05-12 12:30:26,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 12:30:26,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-05-12 12:30:26,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 12:30:26,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-05-12 12:30:26,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 12:30:26,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2024-05-12 12:30:26,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 12:30:26,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2024-05-12 12:30:26,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 12:30:26,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-05-12 12:30:26,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 12:30:26,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2024-05-12 12:30:26,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 12:30:26,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-05-12 12:30:26,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 12:30:26,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2024-05-12 12:30:26,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 12:30:26,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2024-05-12 12:30:26,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 12:30:26,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-05-12 12:30:26,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 12:30:26,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2024-05-12 12:30:26,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 12:30:26,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2024-05-12 12:30:26,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 12:30:26,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-05-12 12:30:26,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 12:30:26,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-05-12 12:30:26,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 12:30:26,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2024-05-12 12:30:26,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 12:30:26,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-05-12 12:30:26,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 12:30:26,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2024-05-12 12:30:26,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 12:30:26,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2024-05-12 12:30:26,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 12:30:26,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-05-12 12:30:26,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-05-12 12:30:26,658 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-05-12 12:30:26,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-05-12 12:30:26,690 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-05-12 12:30:27,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-05-12 12:30:27,076 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:30:27,076 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 12:30:28,953 INFO L349 Elim1Store]: treesize reduction 28, result has 64.6 percent of original size [2024-05-12 12:30:28,953 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 1514 treesize of output 1084 [2024-05-12 12:30:29,041 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-05-12 12:30:29,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 759 treesize of output 699 [2024-05-12 12:31:06,779 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-05-12 12:31:08,041 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-05-12 12:31:08,096 WARN L672 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2024-05-12 12:31:08,124 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-05-12 12:31:08,571 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-05-12 12:31:10,606 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-05-12 12:31:13,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2024-05-12 12:31:13,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 71 [2024-05-12 12:31:14,976 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-05-12 12:31:14,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 2368 treesize of output 1882 [2024-05-12 12:31:16,562 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:31:16,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048172424] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 12:31:16,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-12 12:31:16,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 33 [2024-05-12 12:31:16,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039489939] [2024-05-12 12:31:16,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-12 12:31:16,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-05-12 12:31:16,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:31:16,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-05-12 12:31:16,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=985, Unknown=0, NotChecked=0, Total=1122 [2024-05-12 12:31:21,812 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-05-12 12:31:25,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-05-12 12:31:25,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 48 [2024-05-12 12:31:25,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 624 transitions, 7811 flow. Second operand has 34 states, 34 states have (on average 10.441176470588236) internal successors, (355), 34 states have internal predecessors, (355), 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) [2024-05-12 12:31:25,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:31:25,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 48 [2024-05-12 12:31:25,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:31:33,872 INFO L124 PetriNetUnfolderBase]: 25099/35732 cut-off events. [2024-05-12 12:31:33,872 INFO L125 PetriNetUnfolderBase]: For 273437/273437 co-relation queries the response was YES. [2024-05-12 12:31:34,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181845 conditions, 35732 events. 25099/35732 cut-off events. For 273437/273437 co-relation queries the response was YES. Maximal size of possible extension queue 1913. Compared 243927 event pairs, 4206 based on Foata normal form. 1/35725 useless extension candidates. Maximal degree in co-relation 181754. Up to 30499 conditions per place. [2024-05-12 12:31:34,303 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 666 selfloop transitions, 151 changer transitions 1/823 dead transitions. [2024-05-12 12:31:34,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 823 transitions, 10828 flow [2024-05-12 12:31:34,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-05-12 12:31:34,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-05-12 12:31:34,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 439 transitions. [2024-05-12 12:31:34,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3810763888888889 [2024-05-12 12:31:34,305 INFO L175 Difference]: Start difference. First operand has 273 places, 624 transitions, 7811 flow. Second operand 24 states and 439 transitions. [2024-05-12 12:31:34,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 823 transitions, 10828 flow [2024-05-12 12:31:36,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 823 transitions, 10174 flow, removed 304 selfloop flow, removed 10 redundant places. [2024-05-12 12:31:36,756 INFO L231 Difference]: Finished difference. Result has 296 places, 678 transitions, 8432 flow [2024-05-12 12:31:36,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7159, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=624, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=8432, PETRI_PLACES=296, PETRI_TRANSITIONS=678} [2024-05-12 12:31:36,757 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 247 predicate places. [2024-05-12 12:31:36,757 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 678 transitions, 8432 flow [2024-05-12 12:31:36,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 10.441176470588236) internal successors, (355), 34 states have internal predecessors, (355), 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) [2024-05-12 12:31:36,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:31:36,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:31:36,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-05-12 12:31:36,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-05-12 12:31:36,965 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:31:36,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:31:36,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1533687775, now seen corresponding path program 8 times [2024-05-12 12:31:36,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:31:36,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304005662] [2024-05-12 12:31:36,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:31:36,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:31:37,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:31:37,606 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:31:37,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:31:37,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304005662] [2024-05-12 12:31:37,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304005662] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 12:31:37,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385525004] [2024-05-12 12:31:37,607 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-05-12 12:31:37,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:31:37,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 12:31:37,608 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-12 12:31:37,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-05-12 12:31:37,717 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-05-12 12:31:37,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-05-12 12:31:37,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 45 conjunts are in the unsatisfiable core [2024-05-12 12:31:37,720 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 12:31:37,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-05-12 12:31:37,977 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-05-12 12:31:37,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2024-05-12 12:31:38,013 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:31:38,013 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 12:31:38,231 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-05-12 12:31:38,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 248 treesize of output 232 [2024-05-12 12:31:38,452 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-05-12 12:31:38,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 369 treesize of output 313 [2024-05-12 12:31:38,466 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-05-12 12:31:38,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 236 treesize of output 192 [2024-05-12 12:31:38,639 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:31:38,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385525004] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 12:31:38,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-12 12:31:38,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 27 [2024-05-12 12:31:38,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094253846] [2024-05-12 12:31:38,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-12 12:31:38,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-05-12 12:31:38,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:31:38,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-05-12 12:31:38,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=652, Unknown=0, NotChecked=0, Total=756 [2024-05-12 12:31:39,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-05-12 12:31:39,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 678 transitions, 8432 flow. Second operand has 28 states, 28 states have (on average 13.321428571428571) internal successors, (373), 28 states have internal predecessors, (373), 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) [2024-05-12 12:31:39,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:31:39,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-05-12 12:31:39,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand