./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/popl20-proofs-counter-add-4-semi-Q67.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bcb38a6f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c ./goblint.2024-05-21_14-57-05.files/protection/popl20-proofs-counter-add-4-semi-Q67.wvr.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-bcb38a6-m [2024-06-03 19:01:51,768 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-03 19:01:51,814 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-03 19:01:51,817 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-03 19:01:51,817 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-03 19:01:51,839 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-03 19:01:51,839 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-03 19:01:51,839 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-03 19:01:51,840 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-03 19:01:51,840 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-03 19:01:51,840 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-03 19:01:51,841 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-03 19:01:51,841 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-03 19:01:51,841 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-03 19:01:51,842 INFO L153 SettingsManager]: * Use SBE=true [2024-06-03 19:01:51,842 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-03 19:01:51,842 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-03 19:01:51,843 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-03 19:01:51,843 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-03 19:01:51,843 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-03 19:01:51,843 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-03 19:01:51,856 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-03 19:01:51,856 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-03 19:01:51,856 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-03 19:01:51,857 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-03 19:01:51,857 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-03 19:01:51,857 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-03 19:01:51,857 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-03 19:01:51,858 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-03 19:01:51,858 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-03 19:01:51,858 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-03 19:01:51,858 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-03 19:01:51,858 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 19:01:51,859 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-03 19:01:51,859 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-03 19:01:51,859 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-03 19:01:51,859 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-03 19:01:51,859 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-03 19:01:51,859 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-03 19:01:51,860 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-03 19:01:51,860 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-03 19:01:51,860 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-03 19:01:51,860 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-03 19:01:51,860 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-03 19:01:52,001 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-03 19:01:52,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-03 19:01:52,019 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-03 19:01:52,020 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-03 19:01:52,020 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-03 19:01:52,021 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/popl20-proofs-counter-add-4-semi-Q67.wvr.yml/witness.yml [2024-06-03 19:01:52,114 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-03 19:01:52,114 INFO L274 PluginConnector]: CDTParser initialized [2024-06-03 19:01:52,115 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2024-06-03 19:01:53,216 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-03 19:01:53,344 INFO L384 CDTParser]: Found 1 translation units. [2024-06-03 19:01:53,345 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2024-06-03 19:01:53,350 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c3d772ef/5d0243282ea64ef19aee58468a6b26ba/FLAGa7f84ec2f [2024-06-03 19:01:53,362 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c3d772ef/5d0243282ea64ef19aee58468a6b26ba [2024-06-03 19:01:53,363 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-03 19:01:53,364 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-03 19:01:53,365 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-03 19:01:53,365 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-03 19:01:53,368 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-03 19:01:53,369 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 07:01:52" (1/2) ... [2024-06-03 19:01:53,370 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d083dd5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:01:53, skipping insertion in model container [2024-06-03 19:01:53,370 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 07:01:52" (1/2) ... [2024-06-03 19:01:53,371 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@59dfe0a4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:01:53, skipping insertion in model container [2024-06-03 19:01:53,371 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 07:01:53" (2/2) ... [2024-06-03 19:01:53,371 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d083dd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:01:53, skipping insertion in model container [2024-06-03 19:01:53,372 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 07:01:53" (2/2) ... [2024-06-03 19:01:53,372 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-03 19:01:53,387 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-03 19:01:53,388 INFO L97 edCorrectnessWitness]: Location invariant before [L98-L98] (((! multithreaded || 0 <= i2) && (! multithreaded || 0 <= j2)) && (! multithreaded || 0 <= j1)) && (! multithreaded || 0 <= i1) [2024-06-03 19:01:53,388 INFO L97 edCorrectnessWitness]: Location invariant before [L96-L96] (((! multithreaded || 0 <= i2) && (! multithreaded || 0 <= j2)) && (! multithreaded || 0 <= j1)) && (! multithreaded || 0 <= i1) [2024-06-03 19:01:53,388 INFO L97 edCorrectnessWitness]: Location invariant before [L99-L99] (((! multithreaded || 0 <= i2) && (! multithreaded || 0 <= j2)) && (! multithreaded || 0 <= j1)) && (! multithreaded || 0 <= i1) [2024-06-03 19:01:53,389 INFO L97 edCorrectnessWitness]: Location invariant before [L97-L97] (((! multithreaded || 0 <= i2) && (! multithreaded || 0 <= j2)) && (! multithreaded || 0 <= j1)) && (! multithreaded || 0 <= i1) [2024-06-03 19:01:53,389 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-03 19:01:53,389 INFO L106 edCorrectnessWitness]: ghost_update [L95-L95] multithreaded = 1; [2024-06-03 19:01:53,404 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-03 19:01:53,540 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 19:01:53,547 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-03 19:01:53,641 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 19:01:53,653 INFO L206 MainTranslator]: Completed translation [2024-06-03 19:01:53,653 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:01:53 WrapperNode [2024-06-03 19:01:53,654 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-03 19:01:53,654 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-03 19:01:53,654 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-03 19:01:53,655 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-03 19:01:53,660 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:01:53" (1/1) ... [2024-06-03 19:01:53,665 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:01:53" (1/1) ... [2024-06-03 19:01:53,681 INFO L138 Inliner]: procedures = 21, calls = 23, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 121 [2024-06-03 19:01:53,681 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-03 19:01:53,682 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-03 19:01:53,682 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-03 19:01:53,682 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-03 19:01:53,689 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:01:53" (1/1) ... [2024-06-03 19:01:53,690 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:01:53" (1/1) ... [2024-06-03 19:01:53,699 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:01:53" (1/1) ... [2024-06-03 19:01:53,709 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-03 19:01:53,710 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:01:53" (1/1) ... [2024-06-03 19:01:53,710 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:01:53" (1/1) ... [2024-06-03 19:01:53,721 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:01:53" (1/1) ... [2024-06-03 19:01:53,728 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:01:53" (1/1) ... [2024-06-03 19:01:53,729 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:01:53" (1/1) ... [2024-06-03 19:01:53,730 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:01:53" (1/1) ... [2024-06-03 19:01:53,732 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-03 19:01:53,732 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-03 19:01:53,732 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-03 19:01:53,732 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-03 19:01:53,733 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:01:53" (1/1) ... [2024-06-03 19:01:53,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 19:01:53,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-03 19:01:53,799 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) [2024-06-03 19:01:53,811 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 [2024-06-03 19:01:53,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-03 19:01:53,840 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-03 19:01:53,840 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-03 19:01:53,840 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-03 19:01:53,840 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-03 19:01:53,840 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-03 19:01:53,840 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-03 19:01:53,841 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-06-03 19:01:53,841 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-06-03 19:01:53,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-03 19:01:53,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-03 19:01:53,842 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-03 19:01:53,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-03 19:01:53,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-03 19:01:53,843 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-03 19:01:53,911 INFO L244 CfgBuilder]: Building ICFG [2024-06-03 19:01:53,913 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-03 19:01:54,094 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-03 19:01:54,094 INFO L293 CfgBuilder]: Performing block encoding [2024-06-03 19:01:54,246 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-03 19:01:54,246 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-06-03 19:01:54,247 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 07:01:54 BoogieIcfgContainer [2024-06-03 19:01:54,247 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-03 19:01:54,248 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-03 19:01:54,248 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-03 19:01:54,250 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-03 19:01:54,251 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 07:01:52" (1/4) ... [2024-06-03 19:01:54,251 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8973894 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 07:01:54, skipping insertion in model container [2024-06-03 19:01:54,251 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.06 07:01:53" (2/4) ... [2024-06-03 19:01:54,252 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8973894 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.06 07:01:54, skipping insertion in model container [2024-06-03 19:01:54,253 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:01:53" (3/4) ... [2024-06-03 19:01:54,253 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8973894 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.06 07:01:54, skipping insertion in model container [2024-06-03 19:01:54,253 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 07:01:54" (4/4) ... [2024-06-03 19:01:54,254 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-proofs-counter-add-4-semi-Q67.wvr.c [2024-06-03 19:01:54,267 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-03 19:01:54,267 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-03 19:01:54,267 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-03 19:01:54,309 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-06-03 19:01:54,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 40 transitions, 108 flow [2024-06-03 19:01:54,386 INFO L124 PetriNetUnfolderBase]: 4/36 cut-off events. [2024-06-03 19:01:54,387 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-03 19:01:54,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 36 events. 4/36 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 28 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-06-03 19:01:54,390 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 40 transitions, 108 flow [2024-06-03 19:01:54,394 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 34 transitions, 89 flow [2024-06-03 19:01:54,407 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-03 19:01:54,414 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;@7bb1c7f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-03 19:01:54,414 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-03 19:01:54,422 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-03 19:01:54,422 INFO L124 PetriNetUnfolderBase]: 1/8 cut-off events. [2024-06-03 19:01:54,423 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 19:01:54,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:01:54,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-03 19:01:54,424 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)] === [2024-06-03 19:01:54,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:01:54,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1298174766, now seen corresponding path program 1 times [2024-06-03 19:01:54,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:01:54,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927729569] [2024-06-03 19:01:54,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:01:54,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:01:54,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:01:54,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:01:54,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:01:54,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927729569] [2024-06-03 19:01:54,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927729569] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:01:54,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:01:54,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-03 19:01:54,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130907507] [2024-06-03 19:01:54,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:01:54,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-03 19:01:54,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:01:54,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-03 19:01:54,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-03 19:01:54,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-03 19:01:54,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2024-06-03 19:01:54,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:01:54,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-03 19:01:54,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:01:55,015 INFO L124 PetriNetUnfolderBase]: 595/872 cut-off events. [2024-06-03 19:01:55,016 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-06-03 19:01:55,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1768 conditions, 872 events. 595/872 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2857 event pairs, 132 based on Foata normal form. 16/869 useless extension candidates. Maximal degree in co-relation 1532. Up to 563 conditions per place. [2024-06-03 19:01:55,026 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 40 selfloop transitions, 4 changer transitions 6/55 dead transitions. [2024-06-03 19:01:55,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 55 transitions, 249 flow [2024-06-03 19:01:55,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-03 19:01:55,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-03 19:01:55,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-06-03 19:01:55,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.675 [2024-06-03 19:01:55,037 INFO L175 Difference]: Start difference. First operand has 43 places, 34 transitions, 89 flow. Second operand 3 states and 81 transitions. [2024-06-03 19:01:55,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 55 transitions, 249 flow [2024-06-03 19:01:55,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 55 transitions, 225 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-03 19:01:55,044 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 99 flow [2024-06-03 19:01:55,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2024-06-03 19:01:55,048 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -4 predicate places. [2024-06-03 19:01:55,048 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 99 flow [2024-06-03 19:01:55,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2024-06-03 19:01:55,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:01:55,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:01:55,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-03 19:01:55,049 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:01:55,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:01:55,049 INFO L85 PathProgramCache]: Analyzing trace with hash -2005396496, now seen corresponding path program 1 times [2024-06-03 19:01:55,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:01:55,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800032306] [2024-06-03 19:01:55,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:01:55,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:01:55,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:01:55,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:01:55,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:01:55,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800032306] [2024-06-03 19:01:55,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800032306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:01:55,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:01:55,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-03 19:01:55,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347254308] [2024-06-03 19:01:55,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:01:55,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-03 19:01:55,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:01:55,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-03 19:01:55,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-03 19:01:55,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-03 19:01:55,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 99 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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) [2024-06-03 19:01:55,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:01:55,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-03 19:01:55,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:01:55,325 INFO L124 PetriNetUnfolderBase]: 733/1082 cut-off events. [2024-06-03 19:01:55,325 INFO L125 PetriNetUnfolderBase]: For 237/237 co-relation queries the response was YES. [2024-06-03 19:01:55,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2541 conditions, 1082 events. 733/1082 cut-off events. For 237/237 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3950 event pairs, 114 based on Foata normal form. 30/1107 useless extension candidates. Maximal degree in co-relation 671. Up to 501 conditions per place. [2024-06-03 19:01:55,331 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 52 selfloop transitions, 6 changer transitions 0/63 dead transitions. [2024-06-03 19:01:55,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 63 transitions, 284 flow [2024-06-03 19:01:55,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-03 19:01:55,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-03 19:01:55,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2024-06-03 19:01:55,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6125 [2024-06-03 19:01:55,335 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 99 flow. Second operand 4 states and 98 transitions. [2024-06-03 19:01:55,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 63 transitions, 284 flow [2024-06-03 19:01:55,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 63 transitions, 280 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-03 19:01:55,338 INFO L231 Difference]: Finished difference. Result has 38 places, 35 transitions, 124 flow [2024-06-03 19:01:55,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=124, PETRI_PLACES=38, PETRI_TRANSITIONS=35} [2024-06-03 19:01:55,339 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -5 predicate places. [2024-06-03 19:01:55,340 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 35 transitions, 124 flow [2024-06-03 19:01:55,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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) [2024-06-03 19:01:55,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:01:55,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:01:55,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-03 19:01:55,343 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)] === [2024-06-03 19:01:55,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:01:55,348 INFO L85 PathProgramCache]: Analyzing trace with hash -504894652, now seen corresponding path program 1 times [2024-06-03 19:01:55,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:01:55,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404716796] [2024-06-03 19:01:55,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:01:55,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:01:55,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:01:55,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:01:55,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:01:55,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404716796] [2024-06-03 19:01:55,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404716796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:01:55,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:01:55,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-03 19:01:55,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502400544] [2024-06-03 19:01:55,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:01:55,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-03 19:01:55,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:01:55,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-03 19:01:55,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-03 19:01:55,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2024-06-03 19:01:55,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 35 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2024-06-03 19:01:55,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:01:55,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2024-06-03 19:01:55,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:01:55,537 INFO L124 PetriNetUnfolderBase]: 827/1267 cut-off events. [2024-06-03 19:01:55,537 INFO L125 PetriNetUnfolderBase]: For 978/992 co-relation queries the response was YES. [2024-06-03 19:01:55,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3111 conditions, 1267 events. 827/1267 cut-off events. For 978/992 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 5234 event pairs, 134 based on Foata normal form. 50/1301 useless extension candidates. Maximal degree in co-relation 1022. Up to 940 conditions per place. [2024-06-03 19:01:55,544 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 40 selfloop transitions, 3 changer transitions 0/51 dead transitions. [2024-06-03 19:01:55,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 51 transitions, 251 flow [2024-06-03 19:01:55,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-03 19:01:55,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-03 19:01:55,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2024-06-03 19:01:55,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6583333333333333 [2024-06-03 19:01:55,548 INFO L175 Difference]: Start difference. First operand has 38 places, 35 transitions, 124 flow. Second operand 3 states and 79 transitions. [2024-06-03 19:01:55,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 51 transitions, 251 flow [2024-06-03 19:01:55,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 51 transitions, 241 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-03 19:01:55,550 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 140 flow [2024-06-03 19:01:55,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2024-06-03 19:01:55,551 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -4 predicate places. [2024-06-03 19:01:55,551 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 140 flow [2024-06-03 19:01:55,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2024-06-03 19:01:55,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:01:55,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:01:55,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-03 19:01:55,553 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)] === [2024-06-03 19:01:55,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:01:55,553 INFO L85 PathProgramCache]: Analyzing trace with hash -844968504, now seen corresponding path program 1 times [2024-06-03 19:01:55,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:01:55,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765096107] [2024-06-03 19:01:55,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:01:55,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:01:55,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:01:55,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:01:55,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:01:55,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765096107] [2024-06-03 19:01:55,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765096107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:01:55,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:01:55,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-03 19:01:55,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979381106] [2024-06-03 19:01:55,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:01:55,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-03 19:01:55,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:01:55,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-03 19:01:55,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-03 19:01:55,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-03 19:01:55,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 140 flow. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:01:55,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:01:55,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-03 19:01:55,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:01:55,936 INFO L124 PetriNetUnfolderBase]: 1043/1556 cut-off events. [2024-06-03 19:01:55,936 INFO L125 PetriNetUnfolderBase]: For 1103/1103 co-relation queries the response was YES. [2024-06-03 19:01:55,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4046 conditions, 1556 events. 1043/1556 cut-off events. For 1103/1103 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 6467 event pairs, 224 based on Foata normal form. 28/1575 useless extension candidates. Maximal degree in co-relation 1326. Up to 429 conditions per place. [2024-06-03 19:01:55,944 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 61 selfloop transitions, 8 changer transitions 2/76 dead transitions. [2024-06-03 19:01:55,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 76 transitions, 383 flow [2024-06-03 19:01:55,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 19:01:55,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 19:01:55,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-06-03 19:01:55,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.585 [2024-06-03 19:01:55,946 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 140 flow. Second operand 5 states and 117 transitions. [2024-06-03 19:01:55,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 76 transitions, 383 flow [2024-06-03 19:01:55,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 76 transitions, 380 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-03 19:01:55,949 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 161 flow [2024-06-03 19:01:55,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=161, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2024-06-03 19:01:55,950 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -1 predicate places. [2024-06-03 19:01:55,950 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 161 flow [2024-06-03 19:01:55,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:01:55,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:01:55,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:01:55,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-03 19:01:55,951 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)] === [2024-06-03 19:01:55,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:01:55,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1894021893, now seen corresponding path program 1 times [2024-06-03 19:01:55,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:01:55,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886126847] [2024-06-03 19:01:55,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:01:55,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:01:55,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:01:56,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:01:56,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:01:56,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886126847] [2024-06-03 19:01:56,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886126847] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:01:56,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:01:56,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-03 19:01:56,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761422147] [2024-06-03 19:01:56,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:01:56,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-03 19:01:56,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:01:56,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-03 19:01:56,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-03 19:01:56,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-03 19:01:56,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 161 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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) [2024-06-03 19:01:56,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:01:56,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-03 19:01:56,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:01:56,219 INFO L124 PetriNetUnfolderBase]: 1227/1815 cut-off events. [2024-06-03 19:01:56,219 INFO L125 PetriNetUnfolderBase]: For 1932/1932 co-relation queries the response was YES. [2024-06-03 19:01:56,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4897 conditions, 1815 events. 1227/1815 cut-off events. For 1932/1932 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 7657 event pairs, 193 based on Foata normal form. 24/1834 useless extension candidates. Maximal degree in co-relation 3392. Up to 1042 conditions per place. [2024-06-03 19:01:56,226 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 59 selfloop transitions, 8 changer transitions 0/72 dead transitions. [2024-06-03 19:01:56,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 72 transitions, 389 flow [2024-06-03 19:01:56,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 19:01:56,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 19:01:56,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 111 transitions. [2024-06-03 19:01:56,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.555 [2024-06-03 19:01:56,227 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 161 flow. Second operand 5 states and 111 transitions. [2024-06-03 19:01:56,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 72 transitions, 389 flow [2024-06-03 19:01:56,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 72 transitions, 375 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-03 19:01:56,231 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 186 flow [2024-06-03 19:01:56,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=186, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2024-06-03 19:01:56,232 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2024-06-03 19:01:56,232 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 186 flow [2024-06-03 19:01:56,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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) [2024-06-03 19:01:56,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:01:56,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:01:56,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-03 19:01:56,233 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)] === [2024-06-03 19:01:56,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:01:56,233 INFO L85 PathProgramCache]: Analyzing trace with hash -819715561, now seen corresponding path program 1 times [2024-06-03 19:01:56,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:01:56,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797234555] [2024-06-03 19:01:56,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:01:56,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:01:56,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:01:56,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:01:56,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:01:56,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797234555] [2024-06-03 19:01:56,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797234555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:01:56,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:01:56,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 19:01:56,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900850516] [2024-06-03 19:01:56,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:01:56,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 19:01:56,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:01:56,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 19:01:56,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-03 19:01:56,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-03 19:01:56,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 186 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:01:56,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:01:56,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-03 19:01:56,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:01:56,588 INFO L124 PetriNetUnfolderBase]: 1315/1952 cut-off events. [2024-06-03 19:01:56,588 INFO L125 PetriNetUnfolderBase]: For 2432/2432 co-relation queries the response was YES. [2024-06-03 19:01:56,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5482 conditions, 1952 events. 1315/1952 cut-off events. For 2432/2432 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 8275 event pairs, 166 based on Foata normal form. 24/1971 useless extension candidates. Maximal degree in co-relation 3886. Up to 902 conditions per place. [2024-06-03 19:01:56,595 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 65 selfloop transitions, 9 changer transitions 4/83 dead transitions. [2024-06-03 19:01:56,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 83 transitions, 458 flow [2024-06-03 19:01:56,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:01:56,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:01:56,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 131 transitions. [2024-06-03 19:01:56,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5458333333333333 [2024-06-03 19:01:56,597 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 186 flow. Second operand 6 states and 131 transitions. [2024-06-03 19:01:56,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 83 transitions, 458 flow [2024-06-03 19:01:56,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 83 transitions, 442 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-03 19:01:56,604 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 194 flow [2024-06-03 19:01:56,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=194, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2024-06-03 19:01:56,604 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 3 predicate places. [2024-06-03 19:01:56,605 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 194 flow [2024-06-03 19:01:56,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:01:56,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:01:56,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:01:56,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-03 19:01:56,605 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:01:56,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:01:56,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1866823194, now seen corresponding path program 1 times [2024-06-03 19:01:56,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:01:56,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214789013] [2024-06-03 19:01:56,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:01:56,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:01:56,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:01:56,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:01:56,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:01:56,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214789013] [2024-06-03 19:01:56,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214789013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:01:56,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:01:56,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-03 19:01:56,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105012082] [2024-06-03 19:01:56,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:01:56,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-03 19:01:56,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:01:56,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-03 19:01:56,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-03 19:01:56,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-03 19:01:56,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 194 flow. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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) [2024-06-03 19:01:56,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:01:56,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-03 19:01:56,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:01:56,856 INFO L124 PetriNetUnfolderBase]: 1427/2112 cut-off events. [2024-06-03 19:01:56,856 INFO L125 PetriNetUnfolderBase]: For 3120/3120 co-relation queries the response was YES. [2024-06-03 19:01:56,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6058 conditions, 2112 events. 1427/2112 cut-off events. For 3120/3120 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 9193 event pairs, 248 based on Foata normal form. 16/2119 useless extension candidates. Maximal degree in co-relation 4605. Up to 1075 conditions per place. [2024-06-03 19:01:56,864 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 59 selfloop transitions, 8 changer transitions 4/76 dead transitions. [2024-06-03 19:01:56,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 76 transitions, 445 flow [2024-06-03 19:01:56,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 19:01:56,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 19:01:56,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 111 transitions. [2024-06-03 19:01:56,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.555 [2024-06-03 19:01:56,866 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 194 flow. Second operand 5 states and 111 transitions. [2024-06-03 19:01:56,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 76 transitions, 445 flow [2024-06-03 19:01:56,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 76 transitions, 427 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-03 19:01:56,872 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 204 flow [2024-06-03 19:01:56,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=204, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2024-06-03 19:01:56,872 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2024-06-03 19:01:56,872 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 204 flow [2024-06-03 19:01:56,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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) [2024-06-03 19:01:56,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:01:56,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:01:56,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-03 19:01:56,873 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:01:56,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:01:56,873 INFO L85 PathProgramCache]: Analyzing trace with hash 771834214, now seen corresponding path program 1 times [2024-06-03 19:01:56,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:01:56,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996613592] [2024-06-03 19:01:56,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:01:56,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:01:56,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:01:56,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:01:56,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:01:56,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996613592] [2024-06-03 19:01:56,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996613592] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:01:56,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:01:56,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-03 19:01:56,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021852724] [2024-06-03 19:01:56,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:01:56,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-03 19:01:56,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:01:56,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-03 19:01:56,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-03 19:01:57,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-03 19:01:57,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 204 flow. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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) [2024-06-03 19:01:57,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:01:57,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-03 19:01:57,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:01:57,164 INFO L124 PetriNetUnfolderBase]: 1539/2258 cut-off events. [2024-06-03 19:01:57,165 INFO L125 PetriNetUnfolderBase]: For 3707/3707 co-relation queries the response was YES. [2024-06-03 19:01:57,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6661 conditions, 2258 events. 1539/2258 cut-off events. For 3707/3707 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 9847 event pairs, 276 based on Foata normal form. 16/2269 useless extension candidates. Maximal degree in co-relation 5121. Up to 1538 conditions per place. [2024-06-03 19:01:57,173 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 57 selfloop transitions, 8 changer transitions 2/72 dead transitions. [2024-06-03 19:01:57,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 72 transitions, 432 flow [2024-06-03 19:01:57,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 19:01:57,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 19:01:57,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2024-06-03 19:01:57,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53 [2024-06-03 19:01:57,174 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 204 flow. Second operand 5 states and 106 transitions. [2024-06-03 19:01:57,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 72 transitions, 432 flow [2024-06-03 19:01:57,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 72 transitions, 418 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-03 19:01:57,182 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 229 flow [2024-06-03 19:01:57,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=229, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2024-06-03 19:01:57,183 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 6 predicate places. [2024-06-03 19:01:57,183 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 229 flow [2024-06-03 19:01:57,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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) [2024-06-03 19:01:57,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:01:57,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:01:57,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-03 19:01:57,184 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:01:57,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:01:57,184 INFO L85 PathProgramCache]: Analyzing trace with hash 530266554, now seen corresponding path program 1 times [2024-06-03 19:01:57,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:01:57,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653274577] [2024-06-03 19:01:57,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:01:57,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:01:57,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:01:57,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:01:57,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:01:57,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653274577] [2024-06-03 19:01:57,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653274577] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:01:57,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:01:57,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 19:01:57,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079982292] [2024-06-03 19:01:57,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:01:57,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-03 19:01:57,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:01:57,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-03 19:01:57,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-03 19:01:57,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2024-06-03 19:01:57,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 229 flow. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 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) [2024-06-03 19:01:57,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:01:57,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2024-06-03 19:01:57,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:01:57,564 INFO L124 PetriNetUnfolderBase]: 3535/5310 cut-off events. [2024-06-03 19:01:57,564 INFO L125 PetriNetUnfolderBase]: For 11572/11588 co-relation queries the response was YES. [2024-06-03 19:01:57,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15758 conditions, 5310 events. 3535/5310 cut-off events. For 11572/11588 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 29342 event pairs, 703 based on Foata normal form. 223/5508 useless extension candidates. Maximal degree in co-relation 11829. Up to 2164 conditions per place. [2024-06-03 19:01:57,585 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 61 selfloop transitions, 23 changer transitions 0/90 dead transitions. [2024-06-03 19:01:57,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 90 transitions, 631 flow [2024-06-03 19:01:57,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-03 19:01:57,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-03 19:01:57,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2024-06-03 19:01:57,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-06-03 19:01:57,586 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 229 flow. Second operand 4 states and 110 transitions. [2024-06-03 19:01:57,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 90 transitions, 631 flow [2024-06-03 19:01:57,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 90 transitions, 606 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-03 19:01:57,602 INFO L231 Difference]: Finished difference. Result has 51 places, 62 transitions, 506 flow [2024-06-03 19:01:57,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=506, PETRI_PLACES=51, PETRI_TRANSITIONS=62} [2024-06-03 19:01:57,603 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 8 predicate places. [2024-06-03 19:01:57,603 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 62 transitions, 506 flow [2024-06-03 19:01:57,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 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) [2024-06-03 19:01:57,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:01:57,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:01:57,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-03 19:01:57,604 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:01:57,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:01:57,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1255431028, now seen corresponding path program 1 times [2024-06-03 19:01:57,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:01:57,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514248177] [2024-06-03 19:01:57,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:01:57,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:01:57,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:01:57,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:01:57,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:01:57,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514248177] [2024-06-03 19:01:57,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514248177] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:01:57,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:01:57,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 19:01:57,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798680791] [2024-06-03 19:01:57,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:01:57,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 19:01:57,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:01:57,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 19:01:57,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-03 19:01:57,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-03 19:01:57,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 62 transitions, 506 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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) [2024-06-03 19:01:57,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:01:57,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-03 19:01:57,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:01:58,079 INFO L124 PetriNetUnfolderBase]: 3943/5823 cut-off events. [2024-06-03 19:01:58,080 INFO L125 PetriNetUnfolderBase]: For 19022/19022 co-relation queries the response was YES. [2024-06-03 19:01:58,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20605 conditions, 5823 events. 3943/5823 cut-off events. For 19022/19022 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 31416 event pairs, 682 based on Foata normal form. 48/5866 useless extension candidates. Maximal degree in co-relation 15028. Up to 3944 conditions per place. [2024-06-03 19:01:58,180 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 84 selfloop transitions, 16 changer transitions 6/111 dead transitions. [2024-06-03 19:01:58,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 111 transitions, 968 flow [2024-06-03 19:01:58,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:01:58,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:01:58,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 124 transitions. [2024-06-03 19:01:58,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5166666666666667 [2024-06-03 19:01:58,182 INFO L175 Difference]: Start difference. First operand has 51 places, 62 transitions, 506 flow. Second operand 6 states and 124 transitions. [2024-06-03 19:01:58,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 111 transitions, 968 flow [2024-06-03 19:01:58,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 111 transitions, 954 flow, removed 7 selfloop flow, removed 0 redundant places. [2024-06-03 19:01:58,208 INFO L231 Difference]: Finished difference. Result has 57 places, 64 transitions, 569 flow [2024-06-03 19:01:58,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=569, PETRI_PLACES=57, PETRI_TRANSITIONS=64} [2024-06-03 19:01:58,209 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 14 predicate places. [2024-06-03 19:01:58,209 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 64 transitions, 569 flow [2024-06-03 19:01:58,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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) [2024-06-03 19:01:58,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:01:58,209 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:01:58,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-03 19:01:58,210 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:01:58,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:01:58,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1375084866, now seen corresponding path program 2 times [2024-06-03 19:01:58,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:01:58,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266059818] [2024-06-03 19:01:58,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:01:58,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:01:58,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:01:58,315 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:01:58,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:01:58,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266059818] [2024-06-03 19:01:58,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266059818] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-03 19:01:58,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554143505] [2024-06-03 19:01:58,316 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-03 19:01:58,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-03 19:01:58,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-03 19:01:58,333 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-03 19:01:58,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-06-03 19:01:58,408 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-06-03 19:01:58,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-03 19:01:58,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 9 conjunts are in the unsatisfiable core [2024-06-03 19:01:58,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-03 19:01:58,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:01:58,615 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-03 19:01:58,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554143505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:01:58,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-06-03 19:01:58,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2024-06-03 19:01:58,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89160729] [2024-06-03 19:01:58,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:01:58,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:01:58,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:01:58,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:01:58,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:01:58,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-03 19:01:58,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 64 transitions, 569 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 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) [2024-06-03 19:01:58,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:01:58,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-03 19:01:58,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:01:59,536 INFO L124 PetriNetUnfolderBase]: 7593/11345 cut-off events. [2024-06-03 19:01:59,536 INFO L125 PetriNetUnfolderBase]: For 47245/47245 co-relation queries the response was YES. [2024-06-03 19:01:59,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40077 conditions, 11345 events. 7593/11345 cut-off events. For 47245/47245 co-relation queries the response was YES. Maximal size of possible extension queue 582. Compared 68316 event pairs, 1698 based on Foata normal form. 240/11572 useless extension candidates. Maximal degree in co-relation 27684. Up to 3000 conditions per place. [2024-06-03 19:01:59,562 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 0 selfloop transitions, 0 changer transitions 161/161 dead transitions. [2024-06-03 19:01:59,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 161 transitions, 1608 flow [2024-06-03 19:01:59,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:01:59,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:01:59,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 150 transitions. [2024-06-03 19:01:59,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-06-03 19:01:59,563 INFO L175 Difference]: Start difference. First operand has 57 places, 64 transitions, 569 flow. Second operand 7 states and 150 transitions. [2024-06-03 19:01:59,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 161 transitions, 1608 flow [2024-06-03 19:01:59,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 161 transitions, 1571 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-03 19:01:59,658 INFO L231 Difference]: Finished difference. Result has 58 places, 0 transitions, 0 flow [2024-06-03 19:01:59,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=58, PETRI_TRANSITIONS=0} [2024-06-03 19:01:59,659 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 15 predicate places. [2024-06-03 19:01:59,659 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 0 transitions, 0 flow [2024-06-03 19:01:59,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 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) [2024-06-03 19:01:59,662 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 8 remaining) [2024-06-03 19:01:59,662 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 8 remaining) [2024-06-03 19:01:59,662 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 8 remaining) [2024-06-03 19:01:59,662 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 8 remaining) [2024-06-03 19:01:59,662 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 8 remaining) [2024-06-03 19:01:59,663 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 8 remaining) [2024-06-03 19:01:59,663 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2024-06-03 19:01:59,663 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2024-06-03 19:01:59,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-06-03 19:01:59,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-06-03 19:01:59,874 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:01:59,877 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-03 19:01:59,877 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-03 19:01:59,880 INFO L507 ceAbstractionStarter]: Automizer considered 4 witness invariants [2024-06-03 19:01:59,880 INFO L508 ceAbstractionStarter]: WitnessConsidered=4 [2024-06-03 19:01:59,881 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.06 07:01:59 BasicIcfg [2024-06-03 19:01:59,881 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-03 19:01:59,881 INFO L158 Benchmark]: Toolchain (without parser) took 6517.76ms. Allocated memory was 192.9MB in the beginning and 645.9MB in the end (delta: 453.0MB). Free memory was 118.5MB in the beginning and 355.5MB in the end (delta: -237.0MB). Peak memory consumption was 227.9MB. Max. memory is 16.1GB. [2024-06-03 19:01:59,881 INFO L158 Benchmark]: Witness Parser took 0.16ms. Allocated memory is still 192.9MB. Free memory is still 149.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 19:01:59,881 INFO L158 Benchmark]: CDTParser took 0.07ms. Allocated memory is still 192.9MB. Free memory is still 164.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 19:01:59,882 INFO L158 Benchmark]: CACSL2BoogieTranslator took 289.25ms. Allocated memory is still 192.9MB. Free memory was 118.3MB in the beginning and 160.6MB in the end (delta: -42.3MB). Peak memory consumption was 15.0MB. Max. memory is 16.1GB. [2024-06-03 19:01:59,882 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.11ms. Allocated memory is still 192.9MB. Free memory was 160.6MB in the beginning and 158.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-03 19:01:59,882 INFO L158 Benchmark]: Boogie Preprocessor took 49.73ms. Allocated memory is still 192.9MB. Free memory was 158.5MB in the beginning and 156.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-03 19:01:59,882 INFO L158 Benchmark]: RCFGBuilder took 514.63ms. Allocated memory is still 192.9MB. Free memory was 156.4MB in the beginning and 117.7MB in the end (delta: 38.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2024-06-03 19:01:59,882 INFO L158 Benchmark]: TraceAbstraction took 5632.91ms. Allocated memory was 192.9MB in the beginning and 645.9MB in the end (delta: 453.0MB). Free memory was 116.6MB in the beginning and 355.5MB in the end (delta: -238.9MB). Peak memory consumption was 225.5MB. Max. memory is 16.1GB. [2024-06-03 19:01:59,883 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 0.16ms. Allocated memory is still 192.9MB. Free memory is still 149.6MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.07ms. Allocated memory is still 192.9MB. Free memory is still 164.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 289.25ms. Allocated memory is still 192.9MB. Free memory was 118.3MB in the beginning and 160.6MB in the end (delta: -42.3MB). Peak memory consumption was 15.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.11ms. Allocated memory is still 192.9MB. Free memory was 160.6MB in the beginning and 158.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.73ms. Allocated memory is still 192.9MB. Free memory was 158.5MB in the beginning and 156.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 514.63ms. Allocated memory is still 192.9MB. Free memory was 156.4MB in the beginning and 117.7MB in the end (delta: 38.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * TraceAbstraction took 5632.91ms. Allocated memory was 192.9MB in the beginning and 645.9MB in the end (delta: 453.0MB). Free memory was 116.6MB in the beginning and 355.5MB in the end (delta: -238.9MB). Peak memory consumption was 225.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 96]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 97]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 98]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 99]: 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, 53 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: 5.5s, OverallIterations: 11, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 547 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 426 mSDsluCounter, 34 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 89 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1965 IncrementalHoareTripleChecker+Invalid, 2054 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 89 mSolverCounterUnsat, 34 mSDtfsCounter, 1965 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=569occurred in iteration=10, InterpolantAutomatonStates: 53, 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, 1.2s InterpolantComputationTime, 198 NumberOfCodeBlocks, 198 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 186 ConstructedInterpolants, 0 QuantifiedInterpolants, 2114 SizeOfPredicates, 0 NumberOfNonLiveVariables, 131 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 12 InterpolantComputations, 11 PerfectInterpolantSequences, 2/4 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! [2024-06-03 19:01:59,901 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