./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe019_rmo.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe019_rmo.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb4cb34f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe019_rmo.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe019_rmo.oepc.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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-eb4cb34-m [2024-06-21 19:39:21,751 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-21 19:39:21,828 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-21 19:39:21,833 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-21 19:39:21,834 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-21 19:39:21,869 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-21 19:39:21,870 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-21 19:39:21,870 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-21 19:39:21,871 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-21 19:39:21,871 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-21 19:39:21,872 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-21 19:39:21,877 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-21 19:39:21,877 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-21 19:39:21,878 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-21 19:39:21,878 INFO L153 SettingsManager]: * Use SBE=true [2024-06-21 19:39:21,879 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-21 19:39:21,879 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-21 19:39:21,879 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-21 19:39:21,880 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-21 19:39:21,882 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-21 19:39:21,883 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-21 19:39:21,883 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-21 19:39:21,884 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-21 19:39:21,884 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-21 19:39:21,884 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-21 19:39:21,884 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-21 19:39:21,885 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-21 19:39:21,885 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-21 19:39:21,886 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-21 19:39:21,886 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-21 19:39:21,886 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-21 19:39:21,886 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-21 19:39:21,887 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 19:39:21,887 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-21 19:39:21,887 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-21 19:39:21,887 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-21 19:39:21,887 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-21 19:39:21,888 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-21 19:39:21,888 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-21 19:39:21,888 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-21 19:39:21,888 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-21 19:39:21,889 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-21 19:39:21,889 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-21 19:39:21,889 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-21 19:39:22,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-21 19:39:22,192 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-21 19:39:22,195 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-21 19:39:22,196 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-21 19:39:22,196 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-21 19:39:22,198 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe019_rmo.oepc.yml/witness.yml [2024-06-21 19:39:22,287 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-21 19:39:22,287 INFO L274 PluginConnector]: CDTParser initialized [2024-06-21 19:39:22,288 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe019_rmo.oepc.i [2024-06-21 19:39:23,435 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-21 19:39:23,701 INFO L384 CDTParser]: Found 1 translation units. [2024-06-21 19:39:23,702 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_rmo.oepc.i [2024-06-21 19:39:23,718 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ae4c6da4/d64cdca04d4d44e7b6b181b07664060d/FLAG2f8eae78f [2024-06-21 19:39:23,733 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ae4c6da4/d64cdca04d4d44e7b6b181b07664060d [2024-06-21 19:39:23,734 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-21 19:39:23,736 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-21 19:39:23,739 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-21 19:39:23,739 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-21 19:39:23,743 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-21 19:39:23,744 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 07:39:22" (1/2) ... [2024-06-21 19:39:23,745 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@119a04dd and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:39:23, skipping insertion in model container [2024-06-21 19:39:23,746 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 07:39:22" (1/2) ... [2024-06-21 19:39:23,749 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6fd7394 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:39:23, skipping insertion in model container [2024-06-21 19:39:23,749 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 07:39:23" (2/2) ... [2024-06-21 19:39:23,749 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@119a04dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:39:23, skipping insertion in model container [2024-06-21 19:39:23,750 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 07:39:23" (2/2) ... [2024-06-21 19:39:23,750 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-21 19:39:23,784 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-21 19:39:23,785 INFO L97 edCorrectnessWitness]: Location invariant before [L861-L861] ! multithreaded || ((0LL - (long long )__unbuffered_p0_EBX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )x >= 0LL) [2024-06-21 19:39:23,786 INFO L97 edCorrectnessWitness]: Location invariant before [L858-L858] ! multithreaded || ((0LL - (long long )__unbuffered_p0_EBX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )x >= 0LL) [2024-06-21 19:39:23,786 INFO L97 edCorrectnessWitness]: Location invariant before [L856-L856] ! multithreaded || ((0LL - (long long )__unbuffered_p0_EBX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )x >= 0LL) [2024-06-21 19:39:23,786 INFO L97 edCorrectnessWitness]: Location invariant before [L860-L860] ! multithreaded || ((0LL - (long long )__unbuffered_p0_EBX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )x >= 0LL) [2024-06-21 19:39:23,787 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-21 19:39:23,787 INFO L106 edCorrectnessWitness]: ghost_update [L854-L854] multithreaded = 1; [2024-06-21 19:39:23,839 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-21 19:39:24,262 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 19:39:24,273 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-21 19:39:24,380 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 19:39:24,416 INFO L206 MainTranslator]: Completed translation [2024-06-21 19:39:24,417 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:39:24 WrapperNode [2024-06-21 19:39:24,417 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-21 19:39:24,418 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-21 19:39:24,419 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-21 19:39:24,419 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-21 19:39:24,426 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:39:24" (1/1) ... [2024-06-21 19:39:24,454 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:39:24" (1/1) ... [2024-06-21 19:39:24,482 INFO L138 Inliner]: procedures = 176, calls = 70, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 180 [2024-06-21 19:39:24,482 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-21 19:39:24,483 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-21 19:39:24,483 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-21 19:39:24,483 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-21 19:39:24,492 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:39:24" (1/1) ... [2024-06-21 19:39:24,493 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:39:24" (1/1) ... [2024-06-21 19:39:24,497 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:39:24" (1/1) ... [2024-06-21 19:39:24,517 INFO L175 MemorySlicer]: Split 24 memory accesses to 2 slices as follows [2, 22]. 92 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 9 writes are split as follows [0, 9]. [2024-06-21 19:39:24,517 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:39:24" (1/1) ... [2024-06-21 19:39:24,517 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:39:24" (1/1) ... [2024-06-21 19:39:24,526 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:39:24" (1/1) ... [2024-06-21 19:39:24,529 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:39:24" (1/1) ... [2024-06-21 19:39:24,531 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:39:24" (1/1) ... [2024-06-21 19:39:24,533 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:39:24" (1/1) ... [2024-06-21 19:39:24,538 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-21 19:39:24,538 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-21 19:39:24,539 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-21 19:39:24,539 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-21 19:39:24,542 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:39:24" (1/1) ... [2024-06-21 19:39:24,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 19:39:24,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 19:39:24,578 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) [2024-06-21 19:39:24,605 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 [2024-06-21 19:39:24,623 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-21 19:39:24,623 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-21 19:39:24,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-21 19:39:24,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-21 19:39:24,624 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-21 19:39:24,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-21 19:39:24,625 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-21 19:39:24,625 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-21 19:39:24,625 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-21 19:39:24,625 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-21 19:39:24,626 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-21 19:39:24,626 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-21 19:39:24,626 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-21 19:39:24,627 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-21 19:39:24,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-21 19:39:24,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-21 19:39:24,628 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-21 19:39:24,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-21 19:39:24,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-21 19:39:24,630 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-21 19:39:24,826 INFO L244 CfgBuilder]: Building ICFG [2024-06-21 19:39:24,828 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-21 19:39:25,239 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-21 19:39:25,239 INFO L293 CfgBuilder]: Performing block encoding [2024-06-21 19:39:25,510 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-21 19:39:25,511 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-21 19:39:25,511 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 07:39:25 BoogieIcfgContainer [2024-06-21 19:39:25,511 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-21 19:39:25,514 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-21 19:39:25,514 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-21 19:39:25,517 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-21 19:39:25,517 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 07:39:22" (1/4) ... [2024-06-21 19:39:25,518 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c2d0792 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 07:39:25, skipping insertion in model container [2024-06-21 19:39:25,518 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 07:39:23" (2/4) ... [2024-06-21 19:39:25,520 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c2d0792 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 07:39:25, skipping insertion in model container [2024-06-21 19:39:25,520 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:39:24" (3/4) ... [2024-06-21 19:39:25,520 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c2d0792 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 07:39:25, skipping insertion in model container [2024-06-21 19:39:25,521 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 07:39:25" (4/4) ... [2024-06-21 19:39:25,522 INFO L112 eAbstractionObserver]: Analyzing ICFG safe019_rmo.oepc.i [2024-06-21 19:39:25,538 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-21 19:39:25,539 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-21 19:39:25,539 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-21 19:39:25,625 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-21 19:39:25,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 49 transitions, 114 flow [2024-06-21 19:39:25,719 INFO L124 PetriNetUnfolderBase]: 0/45 cut-off events. [2024-06-21 19:39:25,720 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 19:39:25,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 45 events. 0/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 78 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-21 19:39:25,723 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 49 transitions, 114 flow [2024-06-21 19:39:25,727 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 39 transitions, 90 flow [2024-06-21 19:39:25,734 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-21 19:39:25,739 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;@578ed06c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-21 19:39:25,740 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-21 19:39:25,743 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-21 19:39:25,744 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-21 19:39:25,744 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 19:39:25,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:39:25,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-21 19:39:25,745 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:39:25,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:39:25,750 INFO L85 PathProgramCache]: Analyzing trace with hash 630789305, now seen corresponding path program 1 times [2024-06-21 19:39:25,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:39:25,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832160004] [2024-06-21 19:39:25,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:39:25,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:39:25,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:39:26,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:39:26,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:39:26,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832160004] [2024-06-21 19:39:26,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832160004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:39:26,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:39:26,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-21 19:39:26,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115726630] [2024-06-21 19:39:26,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:39:26,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 19:39:26,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:39:26,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 19:39:26,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 19:39:26,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 49 [2024-06-21 19:39:26,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2024-06-21 19:39:26,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:39:26,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 49 [2024-06-21 19:39:26,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:39:26,480 INFO L124 PetriNetUnfolderBase]: 1249/2023 cut-off events. [2024-06-21 19:39:26,480 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2024-06-21 19:39:26,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3935 conditions, 2023 events. 1249/2023 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 11957 event pairs, 476 based on Foata normal form. 48/2007 useless extension candidates. Maximal degree in co-relation 3922. Up to 1434 conditions per place. [2024-06-21 19:39:26,501 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 38 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2024-06-21 19:39:26,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 53 transitions, 204 flow [2024-06-21 19:39:26,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 19:39:26,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 19:39:26,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-06-21 19:39:26,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6870748299319728 [2024-06-21 19:39:26,514 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 90 flow. Second operand 3 states and 101 transitions. [2024-06-21 19:39:26,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 53 transitions, 204 flow [2024-06-21 19:39:26,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 53 transitions, 198 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-21 19:39:26,524 INFO L231 Difference]: Finished difference. Result has 50 places, 38 transitions, 96 flow [2024-06-21 19:39:26,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=50, PETRI_TRANSITIONS=38} [2024-06-21 19:39:26,529 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -2 predicate places. [2024-06-21 19:39:26,529 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 38 transitions, 96 flow [2024-06-21 19:39:26,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2024-06-21 19:39:26,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:39:26,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:39:26,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-21 19:39:26,531 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:39:26,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:39:26,532 INFO L85 PathProgramCache]: Analyzing trace with hash -148297009, now seen corresponding path program 1 times [2024-06-21 19:39:26,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:39:26,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227136287] [2024-06-21 19:39:26,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:39:26,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:39:26,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:39:26,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:39:26,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:39:26,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227136287] [2024-06-21 19:39:26,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227136287] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:39:26,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:39:26,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 19:39:26,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064852891] [2024-06-21 19:39:26,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:39:26,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 19:39:26,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:39:26,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 19:39:26,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-21 19:39:26,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-06-21 19:39:26,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 38 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2024-06-21 19:39:26,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:39:26,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-06-21 19:39:26,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:39:27,171 INFO L124 PetriNetUnfolderBase]: 2116/3299 cut-off events. [2024-06-21 19:39:27,172 INFO L125 PetriNetUnfolderBase]: For 416/416 co-relation queries the response was YES. [2024-06-21 19:39:27,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7115 conditions, 3299 events. 2116/3299 cut-off events. For 416/416 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 19505 event pairs, 602 based on Foata normal form. 24/3296 useless extension candidates. Maximal degree in co-relation 7103. Up to 2805 conditions per place. [2024-06-21 19:39:27,196 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 52 selfloop transitions, 6 changer transitions 0/69 dead transitions. [2024-06-21 19:39:27,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 69 transitions, 287 flow [2024-06-21 19:39:27,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 19:39:27,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 19:39:27,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2024-06-21 19:39:27,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6581632653061225 [2024-06-21 19:39:27,202 INFO L175 Difference]: Start difference. First operand has 50 places, 38 transitions, 96 flow. Second operand 4 states and 129 transitions. [2024-06-21 19:39:27,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 69 transitions, 287 flow [2024-06-21 19:39:27,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 69 transitions, 281 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-21 19:39:27,212 INFO L231 Difference]: Finished difference. Result has 53 places, 43 transitions, 134 flow [2024-06-21 19:39:27,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=53, PETRI_TRANSITIONS=43} [2024-06-21 19:39:27,214 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 1 predicate places. [2024-06-21 19:39:27,214 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 43 transitions, 134 flow [2024-06-21 19:39:27,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2024-06-21 19:39:27,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:39:27,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:39:27,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-21 19:39:27,221 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:39:27,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:39:27,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1701997406, now seen corresponding path program 1 times [2024-06-21 19:39:27,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:39:27,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322868170] [2024-06-21 19:39:27,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:39:27,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:39:27,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:39:27,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:39:27,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:39:27,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322868170] [2024-06-21 19:39:27,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322868170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:39:27,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:39:27,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 19:39:27,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297822348] [2024-06-21 19:39:27,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:39:27,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 19:39:27,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:39:27,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 19:39:27,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-21 19:39:27,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-06-21 19:39:27,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 43 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 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) [2024-06-21 19:39:27,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:39:27,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-06-21 19:39:27,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:39:28,164 INFO L124 PetriNetUnfolderBase]: 2992/4997 cut-off events. [2024-06-21 19:39:28,167 INFO L125 PetriNetUnfolderBase]: For 1561/1563 co-relation queries the response was YES. [2024-06-21 19:39:28,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11003 conditions, 4997 events. 2992/4997 cut-off events. For 1561/1563 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 34414 event pairs, 488 based on Foata normal form. 184/5154 useless extension candidates. Maximal degree in co-relation 10989. Up to 2145 conditions per place. [2024-06-21 19:39:28,195 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 58 selfloop transitions, 7 changer transitions 2/78 dead transitions. [2024-06-21 19:39:28,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 78 transitions, 354 flow [2024-06-21 19:39:28,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 19:39:28,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 19:39:28,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2024-06-21 19:39:28,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6785714285714286 [2024-06-21 19:39:28,200 INFO L175 Difference]: Start difference. First operand has 53 places, 43 transitions, 134 flow. Second operand 4 states and 133 transitions. [2024-06-21 19:39:28,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 78 transitions, 354 flow [2024-06-21 19:39:28,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 78 transitions, 354 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-21 19:39:28,204 INFO L231 Difference]: Finished difference. Result has 57 places, 45 transitions, 172 flow [2024-06-21 19:39:28,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=172, PETRI_PLACES=57, PETRI_TRANSITIONS=45} [2024-06-21 19:39:28,206 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 5 predicate places. [2024-06-21 19:39:28,206 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 45 transitions, 172 flow [2024-06-21 19:39:28,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 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) [2024-06-21 19:39:28,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:39:28,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:39:28,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-21 19:39:28,207 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:39:28,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:39:28,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1701992756, now seen corresponding path program 2 times [2024-06-21 19:39:28,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:39:28,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333749486] [2024-06-21 19:39:28,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:39:28,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:39:28,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:39:28,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:39:28,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:39:28,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333749486] [2024-06-21 19:39:28,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333749486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:39:28,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:39:28,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 19:39:28,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873091566] [2024-06-21 19:39:28,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:39:28,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 19:39:28,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:39:28,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 19:39:28,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-21 19:39:28,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-06-21 19:39:28,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 45 transitions, 172 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 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) [2024-06-21 19:39:28,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:39:28,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-06-21 19:39:28,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:39:28,960 INFO L124 PetriNetUnfolderBase]: 2936/4717 cut-off events. [2024-06-21 19:39:28,961 INFO L125 PetriNetUnfolderBase]: For 3214/3216 co-relation queries the response was YES. [2024-06-21 19:39:28,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11616 conditions, 4717 events. 2936/4717 cut-off events. For 3214/3216 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 31388 event pairs, 444 based on Foata normal form. 24/4694 useless extension candidates. Maximal degree in co-relation 11599. Up to 3641 conditions per place. [2024-06-21 19:39:28,988 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 60 selfloop transitions, 8 changer transitions 1/80 dead transitions. [2024-06-21 19:39:28,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 80 transitions, 394 flow [2024-06-21 19:39:28,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 19:39:28,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 19:39:28,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 153 transitions. [2024-06-21 19:39:28,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6244897959183674 [2024-06-21 19:39:28,990 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 172 flow. Second operand 5 states and 153 transitions. [2024-06-21 19:39:28,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 80 transitions, 394 flow [2024-06-21 19:39:28,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 80 transitions, 378 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-21 19:39:28,997 INFO L231 Difference]: Finished difference. Result has 59 places, 45 transitions, 184 flow [2024-06-21 19:39:28,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=184, PETRI_PLACES=59, PETRI_TRANSITIONS=45} [2024-06-21 19:39:28,998 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 7 predicate places. [2024-06-21 19:39:28,998 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 45 transitions, 184 flow [2024-06-21 19:39:28,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 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) [2024-06-21 19:39:28,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:39:28,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:39:28,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-21 19:39:28,999 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:39:28,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:39:28,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1136179815, now seen corresponding path program 1 times [2024-06-21 19:39:29,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:39:29,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325803279] [2024-06-21 19:39:29,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:39:29,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:39:29,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:39:29,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:39:29,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:39:29,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325803279] [2024-06-21 19:39:29,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325803279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:39:29,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:39:29,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 19:39:29,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12684562] [2024-06-21 19:39:29,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:39:29,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 19:39:29,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:39:29,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 19:39:29,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-21 19:39:29,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-06-21 19:39:29,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 45 transitions, 184 flow. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 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) [2024-06-21 19:39:29,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:39:29,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-06-21 19:39:29,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:39:29,740 INFO L124 PetriNetUnfolderBase]: 2686/4655 cut-off events. [2024-06-21 19:39:29,740 INFO L125 PetriNetUnfolderBase]: For 3209/3212 co-relation queries the response was YES. [2024-06-21 19:39:29,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11121 conditions, 4655 events. 2686/4655 cut-off events. For 3209/3212 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 32350 event pairs, 602 based on Foata normal form. 83/4673 useless extension candidates. Maximal degree in co-relation 11103. Up to 2279 conditions per place. [2024-06-21 19:39:29,765 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 69 selfloop transitions, 8 changer transitions 2/90 dead transitions. [2024-06-21 19:39:29,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 90 transitions, 455 flow [2024-06-21 19:39:29,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 19:39:29,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 19:39:29,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2024-06-21 19:39:29,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6571428571428571 [2024-06-21 19:39:29,770 INFO L175 Difference]: Start difference. First operand has 59 places, 45 transitions, 184 flow. Second operand 5 states and 161 transitions. [2024-06-21 19:39:29,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 90 transitions, 455 flow [2024-06-21 19:39:29,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 90 transitions, 442 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-21 19:39:29,777 INFO L231 Difference]: Finished difference. Result has 63 places, 45 transitions, 195 flow [2024-06-21 19:39:29,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=195, PETRI_PLACES=63, PETRI_TRANSITIONS=45} [2024-06-21 19:39:29,779 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 11 predicate places. [2024-06-21 19:39:29,780 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 45 transitions, 195 flow [2024-06-21 19:39:29,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 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) [2024-06-21 19:39:29,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:39:29,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:39:29,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-21 19:39:29,781 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:39:29,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:39:29,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1061507694, now seen corresponding path program 1 times [2024-06-21 19:39:29,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:39:29,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635628156] [2024-06-21 19:39:29,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:39:29,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:39:29,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:39:29,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:39:29,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:39:29,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635628156] [2024-06-21 19:39:29,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635628156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:39:29,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:39:29,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:39:29,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189140637] [2024-06-21 19:39:29,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:39:29,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:39:29,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:39:29,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:39:29,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:39:29,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-06-21 19:39:29,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 45 transitions, 195 flow. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 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) [2024-06-21 19:39:29,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:39:29,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-06-21 19:39:29,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:39:30,470 INFO L124 PetriNetUnfolderBase]: 2428/4075 cut-off events. [2024-06-21 19:39:30,471 INFO L125 PetriNetUnfolderBase]: For 3981/3983 co-relation queries the response was YES. [2024-06-21 19:39:30,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9960 conditions, 4075 events. 2428/4075 cut-off events. For 3981/3983 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 27239 event pairs, 396 based on Foata normal form. 80/4146 useless extension candidates. Maximal degree in co-relation 9940. Up to 1153 conditions per place. [2024-06-21 19:39:30,500 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 64 selfloop transitions, 7 changer transitions 6/88 dead transitions. [2024-06-21 19:39:30,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 88 transitions, 445 flow [2024-06-21 19:39:30,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 19:39:30,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 19:39:30,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 160 transitions. [2024-06-21 19:39:30,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6530612244897959 [2024-06-21 19:39:30,502 INFO L175 Difference]: Start difference. First operand has 63 places, 45 transitions, 195 flow. Second operand 5 states and 160 transitions. [2024-06-21 19:39:30,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 88 transitions, 445 flow [2024-06-21 19:39:30,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 88 transitions, 429 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-21 19:39:30,511 INFO L231 Difference]: Finished difference. Result has 66 places, 42 transitions, 178 flow [2024-06-21 19:39:30,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=178, PETRI_PLACES=66, PETRI_TRANSITIONS=42} [2024-06-21 19:39:30,514 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 14 predicate places. [2024-06-21 19:39:30,514 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 42 transitions, 178 flow [2024-06-21 19:39:30,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 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) [2024-06-21 19:39:30,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:39:30,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:39:30,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-21 19:39:30,515 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:39:30,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:39:30,516 INFO L85 PathProgramCache]: Analyzing trace with hash 51452670, now seen corresponding path program 2 times [2024-06-21 19:39:30,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:39:30,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284849637] [2024-06-21 19:39:30,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:39:30,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:39:30,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:39:30,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:39:30,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:39:30,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284849637] [2024-06-21 19:39:30,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284849637] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:39:30,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:39:30,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:39:30,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597801026] [2024-06-21 19:39:30,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:39:30,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 19:39:30,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:39:30,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 19:39:30,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-21 19:39:30,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-06-21 19:39:30,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 42 transitions, 178 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2024-06-21 19:39:30,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:39:30,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-06-21 19:39:30,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:39:31,099 INFO L124 PetriNetUnfolderBase]: 2254/3867 cut-off events. [2024-06-21 19:39:31,100 INFO L125 PetriNetUnfolderBase]: For 4578/4578 co-relation queries the response was YES. [2024-06-21 19:39:31,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9219 conditions, 3867 events. 2254/3867 cut-off events. For 4578/4578 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 26082 event pairs, 298 based on Foata normal form. 80/3900 useless extension candidates. Maximal degree in co-relation 9197. Up to 1312 conditions per place. [2024-06-21 19:39:31,128 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 50 selfloop transitions, 4 changer transitions 17/82 dead transitions. [2024-06-21 19:39:31,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 82 transitions, 410 flow [2024-06-21 19:39:31,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 19:39:31,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 19:39:31,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 155 transitions. [2024-06-21 19:39:31,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6326530612244898 [2024-06-21 19:39:31,130 INFO L175 Difference]: Start difference. First operand has 66 places, 42 transitions, 178 flow. Second operand 5 states and 155 transitions. [2024-06-21 19:39:31,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 82 transitions, 410 flow [2024-06-21 19:39:31,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 82 transitions, 378 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-21 19:39:31,138 INFO L231 Difference]: Finished difference. Result has 62 places, 40 transitions, 146 flow [2024-06-21 19:39:31,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=146, PETRI_PLACES=62, PETRI_TRANSITIONS=40} [2024-06-21 19:39:31,138 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 10 predicate places. [2024-06-21 19:39:31,139 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 40 transitions, 146 flow [2024-06-21 19:39:31,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2024-06-21 19:39:31,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:39:31,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:39:31,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-21 19:39:31,140 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:39:31,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:39:31,140 INFO L85 PathProgramCache]: Analyzing trace with hash 512113864, now seen corresponding path program 3 times [2024-06-21 19:39:31,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:39:31,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180508690] [2024-06-21 19:39:31,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:39:31,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:39:31,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:39:31,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:39:31,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:39:31,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180508690] [2024-06-21 19:39:31,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180508690] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:39:31,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:39:31,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:39:31,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167891785] [2024-06-21 19:39:31,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:39:31,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 19:39:31,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:39:31,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 19:39:31,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-21 19:39:31,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-06-21 19:39:31,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 40 transitions, 146 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2024-06-21 19:39:31,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:39:31,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-06-21 19:39:31,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:39:31,799 INFO L124 PetriNetUnfolderBase]: 2118/3751 cut-off events. [2024-06-21 19:39:31,799 INFO L125 PetriNetUnfolderBase]: For 3394/3394 co-relation queries the response was YES. [2024-06-21 19:39:31,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8525 conditions, 3751 events. 2118/3751 cut-off events. For 3394/3394 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 25787 event pairs, 338 based on Foata normal form. 80/3740 useless extension candidates. Maximal degree in co-relation 8507. Up to 1624 conditions per place. [2024-06-21 19:39:31,822 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 36 selfloop transitions, 1 changer transitions 30/78 dead transitions. [2024-06-21 19:39:31,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 78 transitions, 364 flow [2024-06-21 19:39:31,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 19:39:31,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 19:39:31,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 153 transitions. [2024-06-21 19:39:31,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6244897959183674 [2024-06-21 19:39:31,825 INFO L175 Difference]: Start difference. First operand has 62 places, 40 transitions, 146 flow. Second operand 5 states and 153 transitions. [2024-06-21 19:39:31,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 78 transitions, 364 flow [2024-06-21 19:39:31,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 78 transitions, 350 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-21 19:39:31,836 INFO L231 Difference]: Finished difference. Result has 61 places, 37 transitions, 117 flow [2024-06-21 19:39:31,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=117, PETRI_PLACES=61, PETRI_TRANSITIONS=37} [2024-06-21 19:39:31,838 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 9 predicate places. [2024-06-21 19:39:31,838 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 37 transitions, 117 flow [2024-06-21 19:39:31,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2024-06-21 19:39:31,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:39:31,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:39:31,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-21 19:39:31,839 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:39:31,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:39:31,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1403306824, now seen corresponding path program 4 times [2024-06-21 19:39:31,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:39:31,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977271480] [2024-06-21 19:39:31,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:39:31,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:39:31,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:39:31,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:39:31,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:39:31,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977271480] [2024-06-21 19:39:31,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977271480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:39:31,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:39:31,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:39:31,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949038649] [2024-06-21 19:39:31,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:39:31,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:39:31,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:39:31,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:39:31,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:39:31,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-06-21 19:39:31,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 37 transitions, 117 flow. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 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) [2024-06-21 19:39:31,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:39:31,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-06-21 19:39:31,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:39:32,249 INFO L124 PetriNetUnfolderBase]: 1026/1895 cut-off events. [2024-06-21 19:39:32,250 INFO L125 PetriNetUnfolderBase]: For 1360/1360 co-relation queries the response was YES. [2024-06-21 19:39:32,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4160 conditions, 1895 events. 1026/1895 cut-off events. For 1360/1360 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 11512 event pairs, 170 based on Foata normal form. 80/1968 useless extension candidates. Maximal degree in co-relation 4151. Up to 604 conditions per place. [2024-06-21 19:39:32,255 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 0 selfloop transitions, 0 changer transitions 57/57 dead transitions. [2024-06-21 19:39:32,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 57 transitions, 237 flow [2024-06-21 19:39:32,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 19:39:32,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 19:39:32,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 133 transitions. [2024-06-21 19:39:32,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2024-06-21 19:39:32,256 INFO L175 Difference]: Start difference. First operand has 61 places, 37 transitions, 117 flow. Second operand 5 states and 133 transitions. [2024-06-21 19:39:32,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 57 transitions, 237 flow [2024-06-21 19:39:32,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 57 transitions, 226 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-21 19:39:32,259 INFO L231 Difference]: Finished difference. Result has 54 places, 0 transitions, 0 flow [2024-06-21 19:39:32,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=54, PETRI_TRANSITIONS=0} [2024-06-21 19:39:32,260 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 2 predicate places. [2024-06-21 19:39:32,260 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 0 transitions, 0 flow [2024-06-21 19:39:32,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 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) [2024-06-21 19:39:32,263 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 8 remaining) [2024-06-21 19:39:32,263 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 8 remaining) [2024-06-21 19:39:32,264 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 8 remaining) [2024-06-21 19:39:32,264 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 8 remaining) [2024-06-21 19:39:32,264 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 8 remaining) [2024-06-21 19:39:32,265 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 8 remaining) [2024-06-21 19:39:32,265 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2024-06-21 19:39:32,266 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2024-06-21 19:39:32,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-21 19:39:32,266 INFO L445 BasicCegarLoop]: Path program histogram: [4, 2, 1, 1, 1] [2024-06-21 19:39:32,269 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-21 19:39:32,269 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-21 19:39:32,273 INFO L507 ceAbstractionStarter]: Automizer considered 4 witness invariants [2024-06-21 19:39:32,273 INFO L508 ceAbstractionStarter]: WitnessConsidered=4 [2024-06-21 19:39:32,274 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 07:39:32 BasicIcfg [2024-06-21 19:39:32,274 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-21 19:39:32,275 INFO L158 Benchmark]: Toolchain (without parser) took 8539.02ms. Allocated memory was 161.5MB in the beginning and 694.2MB in the end (delta: 532.7MB). Free memory was 103.5MB in the beginning and 590.7MB in the end (delta: -487.2MB). Peak memory consumption was 446.1MB. Max. memory is 16.1GB. [2024-06-21 19:39:32,275 INFO L158 Benchmark]: Witness Parser took 0.20ms. Allocated memory is still 161.5MB. Free memory is still 127.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 19:39:32,275 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 161.5MB. Free memory is still 125.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 19:39:32,276 INFO L158 Benchmark]: CACSL2BoogieTranslator took 679.16ms. Allocated memory is still 161.5MB. Free memory was 103.1MB in the beginning and 72.4MB in the end (delta: 30.7MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-06-21 19:39:32,276 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.83ms. Allocated memory is still 161.5MB. Free memory was 72.4MB in the beginning and 69.6MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-21 19:39:32,277 INFO L158 Benchmark]: Boogie Preprocessor took 54.99ms. Allocated memory is still 161.5MB. Free memory was 69.6MB in the beginning and 65.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-21 19:39:32,277 INFO L158 Benchmark]: RCFGBuilder took 973.07ms. Allocated memory is still 161.5MB. Free memory was 65.4MB in the beginning and 55.8MB in the end (delta: 9.6MB). Peak memory consumption was 30.0MB. Max. memory is 16.1GB. [2024-06-21 19:39:32,277 INFO L158 Benchmark]: TraceAbstraction took 6760.71ms. Allocated memory was 161.5MB in the beginning and 694.2MB in the end (delta: 532.7MB). Free memory was 55.0MB in the beginning and 590.7MB in the end (delta: -535.7MB). Peak memory consumption was 397.3MB. Max. memory is 16.1GB. [2024-06-21 19:39:32,283 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.20ms. Allocated memory is still 161.5MB. Free memory is still 127.9MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.18ms. Allocated memory is still 161.5MB. Free memory is still 125.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 679.16ms. Allocated memory is still 161.5MB. Free memory was 103.1MB in the beginning and 72.4MB in the end (delta: 30.7MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.83ms. Allocated memory is still 161.5MB. Free memory was 72.4MB in the beginning and 69.6MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.99ms. Allocated memory is still 161.5MB. Free memory was 69.6MB in the beginning and 65.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 973.07ms. Allocated memory is still 161.5MB. Free memory was 65.4MB in the beginning and 55.8MB in the end (delta: 9.6MB). Peak memory consumption was 30.0MB. Max. memory is 16.1GB. * TraceAbstraction took 6760.71ms. Allocated memory was 161.5MB in the beginning and 694.2MB in the end (delta: 532.7MB). Free memory was 55.0MB in the beginning and 590.7MB in the end (delta: -535.7MB). Peak memory consumption was 397.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 856]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 858]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 860]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 861]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 80 locations, 8 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.6s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 5.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 587 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 506 mSDsluCounter, 28 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 40 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1143 IncrementalHoareTripleChecker+Invalid, 1183 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 40 mSolverCounterUnsat, 20 mSDtfsCounter, 1143 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=195occurred in iteration=5, InterpolantAutomatonStates: 41, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 119 ConstructedInterpolants, 0 QuantifiedInterpolants, 491 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-21 19:39:32,306 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE