./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-min-max-inc-dec.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/popl20-min-max-inc-dec.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 80b1b132 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/popl20-min-max-inc-dec.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/popl20-min-max-inc-dec.wvr.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-?-80b1b13-m [2024-01-31 17:04:58,419 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 17:04:58,483 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 17:04:58,489 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 17:04:58,490 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 17:04:58,523 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 17:04:58,528 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 17:04:58,529 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 17:04:58,529 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 17:04:58,532 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 17:04:58,533 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 17:04:58,533 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 17:04:58,533 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 17:04:58,534 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 17:04:58,534 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 17:04:58,535 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 17:04:58,535 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 17:04:58,535 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 17:04:58,535 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 17:04:58,535 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 17:04:58,536 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 17:04:58,536 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 17:04:58,536 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 17:04:58,536 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 17:04:58,536 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 17:04:58,537 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 17:04:58,537 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 17:04:58,537 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 17:04:58,538 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 17:04:58,538 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 17:04:58,538 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 17:04:58,539 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 17:04:58,539 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:04:58,539 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 17:04:58,539 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 17:04:58,539 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 17:04:58,540 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 17:04:58,540 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 17:04:58,540 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 17:04:58,541 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 17:04:58,541 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 17:04:58,541 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 17:04:58,541 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 17:04:58,541 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 17:04:58,746 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 17:04:58,768 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 17:04:58,770 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 17:04:58,771 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 17:04:58,771 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 17:04:58,772 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/popl20-min-max-inc-dec.wvr.yml/witness.yml [2024-01-31 17:04:58,945 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 17:04:58,946 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 17:04:58,947 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-min-max-inc-dec.wvr.c [2024-01-31 17:04:59,854 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 17:05:00,025 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 17:05:00,026 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-min-max-inc-dec.wvr.c [2024-01-31 17:05:00,032 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7aff5f7df/efff2de08d1b495b8aea27611602d2ef/FLAGddd15e8ee [2024-01-31 17:05:00,045 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7aff5f7df/efff2de08d1b495b8aea27611602d2ef [2024-01-31 17:05:00,046 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 17:05:00,047 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 17:05:00,049 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 17:05:00,049 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 17:05:00,053 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 17:05:00,053 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:04:58" (1/2) ... [2024-01-31 17:05:00,054 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54b467b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:05:00, skipping insertion in model container [2024-01-31 17:05:00,054 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:04:58" (1/2) ... [2024-01-31 17:05:00,056 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@23e3367 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:05:00, skipping insertion in model container [2024-01-31 17:05:00,056 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:05:00" (2/2) ... [2024-01-31 17:05:00,056 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54b467b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:05:00, skipping insertion in model container [2024-01-31 17:05:00,056 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:05:00" (2/2) ... [2024-01-31 17:05:00,056 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 17:05:00,113 INFO L93 nessWitnessExtractor]: Witness did not contain any usable entries. [2024-01-31 17:05:00,146 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 17:05:00,311 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-min-max-inc-dec.wvr.c[3336,3349] [2024-01-31 17:05:00,318 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:05:00,326 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 17:05:00,349 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-min-max-inc-dec.wvr.c[3336,3349] [2024-01-31 17:05:00,352 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:05:00,365 INFO L208 MainTranslator]: Completed translation [2024-01-31 17:05:00,366 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:05:00 WrapperNode [2024-01-31 17:05:00,366 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 17:05:00,367 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 17:05:00,367 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 17:05:00,367 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 17:05:00,372 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:05:00" (1/1) ... [2024-01-31 17:05:00,389 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:05:00" (1/1) ... [2024-01-31 17:05:00,428 INFO L138 Inliner]: procedures = 27, calls = 75, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 180 [2024-01-31 17:05:00,429 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 17:05:00,430 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 17:05:00,430 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 17:05:00,430 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 17:05:00,439 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:05:00" (1/1) ... [2024-01-31 17:05:00,439 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:05:00" (1/1) ... [2024-01-31 17:05:00,455 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:05:00" (1/1) ... [2024-01-31 17:05:00,476 INFO L175 MemorySlicer]: Split 25 memory accesses to 7 slices as follows [2, 2, 2, 2, 13, 2, 2]. 52 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0]. The 8 writes are split as follows [0, 1, 1, 1, 3, 1, 1]. [2024-01-31 17:05:00,480 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:05:00" (1/1) ... [2024-01-31 17:05:00,481 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:05:00" (1/1) ... [2024-01-31 17:05:00,488 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:05:00" (1/1) ... [2024-01-31 17:05:00,491 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:05:00" (1/1) ... [2024-01-31 17:05:00,492 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:05:00" (1/1) ... [2024-01-31 17:05:00,493 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:05:00" (1/1) ... [2024-01-31 17:05:00,498 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 17:05:00,499 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 17:05:00,499 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 17:05:00,499 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 17:05:00,500 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:05:00" (1/1) ... [2024-01-31 17:05:00,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:05:00,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:05:00,530 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-31 17:05:00,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-31 17:05:00,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 17:05:00,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 17:05:00,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 17:05:00,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 17:05:00,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 17:05:00,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 17:05:00,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-31 17:05:00,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-01-31 17:05:00,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-01-31 17:05:00,557 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-31 17:05:00,557 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-31 17:05:00,557 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-31 17:05:00,557 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-31 17:05:00,557 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-31 17:05:00,557 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-01-31 17:05:00,557 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-01-31 17:05:00,558 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-31 17:05:00,558 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-31 17:05:00,558 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-31 17:05:00,558 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-31 17:05:00,558 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-31 17:05:00,558 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-31 17:05:00,558 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-01-31 17:05:00,558 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-01-31 17:05:00,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 17:05:00,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 17:05:00,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 17:05:00,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 17:05:00,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-31 17:05:00,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-01-31 17:05:00,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-01-31 17:05:00,559 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2024-01-31 17:05:00,559 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2024-01-31 17:05:00,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 17:05:00,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 17:05:00,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-01-31 17:05:00,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 17:05:00,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 17:05:00,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 17:05:00,561 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 17:05:00,658 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 17:05:00,659 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 17:05:00,931 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 17:05:00,931 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 17:05:01,104 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 17:05:01,105 INFO L320 CfgBuilder]: Removed 5 assume(true) statements. [2024-01-31 17:05:01,105 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:05:01 BoogieIcfgContainer [2024-01-31 17:05:01,105 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 17:05:01,107 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 17:05:01,107 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 17:05:01,110 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 17:05:01,110 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:04:58" (1/4) ... [2024-01-31 17:05:01,110 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@116e2204 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:05:01, skipping insertion in model container [2024-01-31 17:05:01,110 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 05:05:00" (2/4) ... [2024-01-31 17:05:01,111 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@116e2204 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:05:01, skipping insertion in model container [2024-01-31 17:05:01,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:05:00" (3/4) ... [2024-01-31 17:05:01,112 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@116e2204 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:05:01, skipping insertion in model container [2024-01-31 17:05:01,112 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:05:01" (4/4) ... [2024-01-31 17:05:01,113 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-inc-dec.wvr.c [2024-01-31 17:05:01,126 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 17:05:01,126 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-31 17:05:01,126 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 17:05:01,188 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2024-01-31 17:05:01,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 59 transitions, 153 flow [2024-01-31 17:05:01,264 INFO L124 PetriNetUnfolderBase]: 5/54 cut-off events. [2024-01-31 17:05:01,264 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-01-31 17:05:01,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 54 events. 5/54 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 95 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2024-01-31 17:05:01,267 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 59 transitions, 153 flow [2024-01-31 17:05:01,270 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 53 transitions, 136 flow [2024-01-31 17:05:01,281 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 17:05:01,287 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;@362daa9c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 17:05:01,288 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-01-31 17:05:01,314 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 17:05:01,314 INFO L124 PetriNetUnfolderBase]: 5/52 cut-off events. [2024-01-31 17:05:01,314 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-01-31 17:05:01,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:05:01,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:05:01,316 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-01-31 17:05:01,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:05:01,320 INFO L85 PathProgramCache]: Analyzing trace with hash -2128190068, now seen corresponding path program 1 times [2024-01-31 17:05:01,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:05:01,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952634220] [2024-01-31 17:05:01,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:05:01,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:05:01,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:05:01,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:05:01,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:05:01,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952634220] [2024-01-31 17:05:01,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952634220] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:05:01,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:05:01,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 17:05:01,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880323396] [2024-01-31 17:05:01,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:05:01,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:05:01,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:05:01,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:05:01,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:05:01,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 59 [2024-01-31 17:05:01,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 53 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:05:01,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:05:01,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 59 [2024-01-31 17:05:01,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:05:03,786 INFO L124 PetriNetUnfolderBase]: 19022/25535 cut-off events. [2024-01-31 17:05:03,786 INFO L125 PetriNetUnfolderBase]: For 1219/1219 co-relation queries the response was YES. [2024-01-31 17:05:03,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50980 conditions, 25535 events. 19022/25535 cut-off events. For 1219/1219 co-relation queries the response was YES. Maximal size of possible extension queue 1173. Compared 156168 event pairs, 9036 based on Foata normal form. 746/25689 useless extension candidates. Maximal degree in co-relation 45287. Up to 15793 conditions per place. [2024-01-31 17:05:03,967 INFO L140 encePairwiseOnDemand]: 55/59 looper letters, 61 selfloop transitions, 3 changer transitions 0/77 dead transitions. [2024-01-31 17:05:03,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 77 transitions, 324 flow [2024-01-31 17:05:03,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 17:05:03,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 17:05:03,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2024-01-31 17:05:03,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5805084745762712 [2024-01-31 17:05:03,978 INFO L175 Difference]: Start difference. First operand has 64 places, 53 transitions, 136 flow. Second operand 4 states and 137 transitions. [2024-01-31 17:05:03,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 77 transitions, 324 flow [2024-01-31 17:05:04,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 77 transitions, 296 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-01-31 17:05:04,009 INFO L231 Difference]: Finished difference. Result has 58 places, 54 transitions, 130 flow [2024-01-31 17:05:04,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=130, PETRI_PLACES=58, PETRI_TRANSITIONS=54} [2024-01-31 17:05:04,013 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -6 predicate places. [2024-01-31 17:05:04,013 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 54 transitions, 130 flow [2024-01-31 17:05:04,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:05:04,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:05:04,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:05:04,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 17:05:04,014 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-01-31 17:05:04,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:05:04,015 INFO L85 PathProgramCache]: Analyzing trace with hash -276973944, now seen corresponding path program 1 times [2024-01-31 17:05:04,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:05:04,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462595759] [2024-01-31 17:05:04,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:05:04,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:05:04,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:05:04,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:05:04,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:05:04,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462595759] [2024-01-31 17:05:04,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462595759] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:05:04,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:05:04,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 17:05:04,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996699582] [2024-01-31 17:05:04,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:05:04,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:05:04,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:05:04,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:05:04,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:05:04,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 59 [2024-01-31 17:05:04,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 130 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:05:04,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:05:04,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 59 [2024-01-31 17:05:04,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:05:06,109 INFO L124 PetriNetUnfolderBase]: 24711/33202 cut-off events. [2024-01-31 17:05:06,109 INFO L125 PetriNetUnfolderBase]: For 5476/5476 co-relation queries the response was YES. [2024-01-31 17:05:06,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70181 conditions, 33202 events. 24711/33202 cut-off events. For 5476/5476 co-relation queries the response was YES. Maximal size of possible extension queue 1360. Compared 201262 event pairs, 13878 based on Foata normal form. 792/33320 useless extension candidates. Maximal degree in co-relation 9315. Up to 22788 conditions per place. [2024-01-31 17:05:06,415 INFO L140 encePairwiseOnDemand]: 55/59 looper letters, 64 selfloop transitions, 3 changer transitions 0/79 dead transitions. [2024-01-31 17:05:06,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 79 transitions, 328 flow [2024-01-31 17:05:06,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 17:05:06,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 17:05:06,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2024-01-31 17:05:06,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5677966101694916 [2024-01-31 17:05:06,417 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 130 flow. Second operand 4 states and 134 transitions. [2024-01-31 17:05:06,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 79 transitions, 328 flow [2024-01-31 17:05:06,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 79 transitions, 322 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 17:05:06,425 INFO L231 Difference]: Finished difference. Result has 60 places, 55 transitions, 140 flow [2024-01-31 17:05:06,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=140, PETRI_PLACES=60, PETRI_TRANSITIONS=55} [2024-01-31 17:05:06,426 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -4 predicate places. [2024-01-31 17:05:06,426 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 55 transitions, 140 flow [2024-01-31 17:05:06,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:05:06,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:05:06,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:05:06,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 17:05:06,427 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-01-31 17:05:06,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:05:06,428 INFO L85 PathProgramCache]: Analyzing trace with hash 708818271, now seen corresponding path program 1 times [2024-01-31 17:05:06,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:05:06,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24998411] [2024-01-31 17:05:06,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:05:06,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:05:06,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:05:06,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:05:06,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:05:06,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24998411] [2024-01-31 17:05:06,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24998411] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:05:06,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:05:06,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 17:05:06,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453730404] [2024-01-31 17:05:06,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:05:06,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:05:06,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:05:06,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:05:06,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:05:06,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 59 [2024-01-31 17:05:06,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 55 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:05:06,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:05:06,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 59 [2024-01-31 17:05:06,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:05:08,514 INFO L124 PetriNetUnfolderBase]: 28504/38008 cut-off events. [2024-01-31 17:05:08,514 INFO L125 PetriNetUnfolderBase]: For 7412/8517 co-relation queries the response was YES. [2024-01-31 17:05:08,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84580 conditions, 38008 events. 28504/38008 cut-off events. For 7412/8517 co-relation queries the response was YES. Maximal size of possible extension queue 1333. Compared 226838 event pairs, 16499 based on Foata normal form. 2149/39399 useless extension candidates. Maximal degree in co-relation 22074. Up to 25792 conditions per place. [2024-01-31 17:05:09,041 INFO L140 encePairwiseOnDemand]: 55/59 looper letters, 66 selfloop transitions, 3 changer transitions 0/81 dead transitions. [2024-01-31 17:05:09,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 81 transitions, 349 flow [2024-01-31 17:05:09,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 17:05:09,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 17:05:09,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2024-01-31 17:05:09,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5677966101694916 [2024-01-31 17:05:09,045 INFO L175 Difference]: Start difference. First operand has 60 places, 55 transitions, 140 flow. Second operand 4 states and 134 transitions. [2024-01-31 17:05:09,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 81 transitions, 349 flow [2024-01-31 17:05:09,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 81 transitions, 344 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 17:05:09,051 INFO L231 Difference]: Finished difference. Result has 62 places, 56 transitions, 150 flow [2024-01-31 17:05:09,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=150, PETRI_PLACES=62, PETRI_TRANSITIONS=56} [2024-01-31 17:05:09,052 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -2 predicate places. [2024-01-31 17:05:09,052 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 56 transitions, 150 flow [2024-01-31 17:05:09,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:05:09,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:05:09,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:05:09,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 17:05:09,054 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-01-31 17:05:09,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:05:09,055 INFO L85 PathProgramCache]: Analyzing trace with hash 939392660, now seen corresponding path program 1 times [2024-01-31 17:05:09,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:05:09,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416945136] [2024-01-31 17:05:09,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:05:09,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:05:09,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:05:09,183 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:05:09,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:05:09,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416945136] [2024-01-31 17:05:09,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416945136] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:05:09,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:05:09,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 17:05:09,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478422572] [2024-01-31 17:05:09,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:05:09,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:05:09,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:05:09,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:05:09,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:05:09,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 59 [2024-01-31 17:05:09,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 56 transitions, 150 flow. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:05:09,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:05:09,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 59 [2024-01-31 17:05:09,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:05:12,130 INFO L124 PetriNetUnfolderBase]: 35980/48134 cut-off events. [2024-01-31 17:05:12,130 INFO L125 PetriNetUnfolderBase]: For 13160/16052 co-relation queries the response was YES. [2024-01-31 17:05:12,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111398 conditions, 48134 events. 35980/48134 cut-off events. For 13160/16052 co-relation queries the response was YES. Maximal size of possible extension queue 1752. Compared 307896 event pairs, 19961 based on Foata normal form. 4360/51869 useless extension candidates. Maximal degree in co-relation 31637. Up to 30868 conditions per place. [2024-01-31 17:05:12,356 INFO L140 encePairwiseOnDemand]: 55/59 looper letters, 67 selfloop transitions, 3 changer transitions 0/83 dead transitions. [2024-01-31 17:05:12,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 83 transitions, 369 flow [2024-01-31 17:05:12,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 17:05:12,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 17:05:12,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2024-01-31 17:05:12,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5805084745762712 [2024-01-31 17:05:12,358 INFO L175 Difference]: Start difference. First operand has 62 places, 56 transitions, 150 flow. Second operand 4 states and 137 transitions. [2024-01-31 17:05:12,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 83 transitions, 369 flow [2024-01-31 17:05:12,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 83 transitions, 364 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 17:05:12,364 INFO L231 Difference]: Finished difference. Result has 64 places, 57 transitions, 160 flow [2024-01-31 17:05:12,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=160, PETRI_PLACES=64, PETRI_TRANSITIONS=57} [2024-01-31 17:05:12,365 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 0 predicate places. [2024-01-31 17:05:12,365 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 57 transitions, 160 flow [2024-01-31 17:05:12,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:05:12,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:05:12,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:05:12,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 17:05:12,366 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-01-31 17:05:12,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:05:12,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1875594045, now seen corresponding path program 1 times [2024-01-31 17:05:12,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:05:12,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314368352] [2024-01-31 17:05:12,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:05:12,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:05:12,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:05:12,515 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-01-31 17:05:12,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:05:12,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314368352] [2024-01-31 17:05:12,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314368352] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:05:12,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:05:12,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 17:05:12,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302755923] [2024-01-31 17:05:12,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:05:12,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:05:12,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:05:12,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:05:12,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:05:12,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 59 [2024-01-31 17:05:12,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 57 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:05:12,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:05:12,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 59 [2024-01-31 17:05:12,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:05:15,279 INFO L124 PetriNetUnfolderBase]: 35980/47774 cut-off events. [2024-01-31 17:05:15,279 INFO L125 PetriNetUnfolderBase]: For 19669/22561 co-relation queries the response was YES. [2024-01-31 17:05:15,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116856 conditions, 47774 events. 35980/47774 cut-off events. For 19669/22561 co-relation queries the response was YES. Maximal size of possible extension queue 1742. Compared 296904 event pairs, 30069 based on Foata normal form. 2892/50116 useless extension candidates. Maximal degree in co-relation 34009. Up to 45313 conditions per place. [2024-01-31 17:05:15,501 INFO L140 encePairwiseOnDemand]: 56/59 looper letters, 43 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2024-01-31 17:05:15,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 58 transitions, 252 flow [2024-01-31 17:05:15,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:05:15,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:05:15,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2024-01-31 17:05:15,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5423728813559322 [2024-01-31 17:05:15,502 INFO L175 Difference]: Start difference. First operand has 64 places, 57 transitions, 160 flow. Second operand 3 states and 96 transitions. [2024-01-31 17:05:15,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 58 transitions, 252 flow [2024-01-31 17:05:15,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 58 transitions, 248 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 17:05:15,522 INFO L231 Difference]: Finished difference. Result has 65 places, 58 transitions, 168 flow [2024-01-31 17:05:15,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=65, PETRI_TRANSITIONS=58} [2024-01-31 17:05:15,522 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 1 predicate places. [2024-01-31 17:05:15,522 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 58 transitions, 168 flow [2024-01-31 17:05:15,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:05:15,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:05:15,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:05:15,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 17:05:15,523 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-01-31 17:05:15,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:05:15,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1478200091, now seen corresponding path program 1 times [2024-01-31 17:05:15,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:05:15,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695433364] [2024-01-31 17:05:15,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:05:15,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:05:15,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:05:15,998 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:05:15,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:05:15,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695433364] [2024-01-31 17:05:15,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695433364] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:05:15,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759241703] [2024-01-31 17:05:15,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:05:15,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:05:15,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:05:16,000 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:05:16,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-01-31 17:05:16,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:05:16,143 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 25 conjunts are in the unsatisfiable core [2024-01-31 17:05:16,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:05:16,190 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 [2024-01-31 17:05:16,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2024-01-31 17:05:16,402 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:05:16,402 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:05:16,741 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:05:16,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759241703] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:05:16,743 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:05:16,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11, 8] total 22 [2024-01-31 17:05:16,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282028556] [2024-01-31 17:05:16,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:05:16,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-01-31 17:05:16,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:05:16,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-01-31 17:05:16,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2024-01-31 17:05:16,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2024-01-31 17:05:16,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 58 transitions, 168 flow. Second operand has 22 states, 22 states have (on average 20.681818181818183) internal successors, (455), 22 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:05:16,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:05:16,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2024-01-31 17:05:16,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand