./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-node-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4f9af400 extending candidate: java ['java'] extending candidate: /usr/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/oracle-jdk-bin-*/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/openjdk-*/bin/java ['java', '/usr/bin/java'] extending candidate: /usr/lib/jvm/java-*-openjdk-amd64/bin/java ['java', '/usr/bin/java', '/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java', '/usr/lib/jvm/java-17-openjdk-amd64/bin/java', '/usr/lib/jvm/java-11-openjdk-amd64/bin/java', '/usr/lib/jvm/java-1.17.0-openjdk-amd64/bin/java'] ['/root/.sdkman/candidates/java/21.0.5-tem/bin/java', '-Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config', '-Xmx15G', '-Xms4m', '-jar', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar', '-data', '@noDefault', '-ultimatedata', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data', '-tc', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml', '-i', '../sv-benchmarks/c/weaver/chl-node-subst.wvr.c', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf', '--cacsl2boogietranslator.entry.function', 'main', '--witnessprinter.witness.directory', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux', '--witnessprinter.witness.filename', 'witness', '--witnessprinter.write.witness.besides.input.file', 'false', '--witnessprinter.graph.data.specification', 'CHECK( init(main()), LTL(G ! call(reach_error())) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '32bit', '--witnessprinter.graph.data.programhash', '3b43103ca9a91605874c4d895f03c4116805b9b245b91cffe9bd63255503e5a0'] Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-node-subst.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3b43103ca9a91605874c4d895f03c4116805b9b245b91cffe9bd63255503e5a0 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 11:23:10,261 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 11:23:10,372 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-07 11:23:10,378 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 11:23:10,379 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 11:23:10,402 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 11:23:10,403 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 11:23:10,403 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 11:23:10,404 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 11:23:10,404 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 11:23:10,405 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 11:23:10,405 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 11:23:10,406 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 11:23:10,406 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 11:23:10,406 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 11:23:10,407 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 11:23:10,407 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 11:23:10,407 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 11:23:10,407 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 11:23:10,407 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 11:23:10,407 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 11:23:10,407 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 11:23:10,408 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 11:23:10,408 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 11:23:10,408 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 11:23:10,408 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 11:23:10,408 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 11:23:10,408 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 11:23:10,408 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 11:23:10,409 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 11:23:10,409 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 11:23:10,409 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 11:23:10,409 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:23:10,409 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 11:23:10,409 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 11:23:10,409 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 11:23:10,409 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 11:23:10,409 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 11:23:10,409 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 11:23:10,409 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 11:23:10,409 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 11:23:10,409 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 11:23:10,409 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3b43103ca9a91605874c4d895f03c4116805b9b245b91cffe9bd63255503e5a0 [2024-11-07 11:23:10,735 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 11:23:10,743 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 11:23:10,746 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 11:23:10,747 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 11:23:10,747 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 11:23:10,749 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2024-11-07 11:23:12,187 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 11:23:12,420 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 11:23:12,420 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2024-11-07 11:23:12,426 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/189401e34/42b1498f40eb4982921174ff831f5860/FLAGc4e85dad9 [2024-11-07 11:23:12,447 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/189401e34/42b1498f40eb4982921174ff831f5860 [2024-11-07 11:23:12,449 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 11:23:12,451 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 11:23:12,452 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 11:23:12,453 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 11:23:12,456 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 11:23:12,457 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:23:12" (1/1) ... [2024-11-07 11:23:12,457 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19c4c7b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:23:12, skipping insertion in model container [2024-11-07 11:23:12,457 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:23:12" (1/1) ... [2024-11-07 11:23:12,474 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 11:23:12,648 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/chl-node-subst.wvr.c[4035,4048] [2024-11-07 11:23:12,670 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:23:12,683 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 11:23:12,718 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/chl-node-subst.wvr.c[4035,4048] [2024-11-07 11:23:12,730 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:23:12,748 INFO L204 MainTranslator]: Completed translation [2024-11-07 11:23:12,749 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:23:12 WrapperNode [2024-11-07 11:23:12,749 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 11:23:12,750 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 11:23:12,751 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 11:23:12,752 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 11:23:12,757 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:23:12" (1/1) ... [2024-11-07 11:23:12,770 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:23:12" (1/1) ... [2024-11-07 11:23:12,810 INFO L138 Inliner]: procedures = 26, calls = 51, calls flagged for inlining = 22, calls inlined = 34, statements flattened = 424 [2024-11-07 11:23:12,810 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 11:23:12,811 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 11:23:12,811 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 11:23:12,811 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 11:23:12,822 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:23:12" (1/1) ... [2024-11-07 11:23:12,822 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:23:12" (1/1) ... [2024-11-07 11:23:12,828 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:23:12" (1/1) ... [2024-11-07 11:23:12,844 INFO L175 MemorySlicer]: Split 26 memory accesses to 3 slices as follows [2, 9, 15]. 58 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 6 writes are split as follows [0, 3, 3]. [2024-11-07 11:23:12,845 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:23:12" (1/1) ... [2024-11-07 11:23:12,845 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:23:12" (1/1) ... [2024-11-07 11:23:12,863 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:23:12" (1/1) ... [2024-11-07 11:23:12,868 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:23:12" (1/1) ... [2024-11-07 11:23:12,870 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:23:12" (1/1) ... [2024-11-07 11:23:12,872 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:23:12" (1/1) ... [2024-11-07 11:23:12,875 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 11:23:12,876 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 11:23:12,876 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 11:23:12,876 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 11:23:12,877 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:23:12" (1/1) ... [2024-11-07 11:23:12,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:23:12,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:23:12,911 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-07 11:23:12,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-07 11:23:12,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 11:23:12,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-07 11:23:12,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-07 11:23:12,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-07 11:23:12,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-07 11:23:12,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-07 11:23:12,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-07 11:23:12,942 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-07 11:23:12,942 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-07 11:23:12,942 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-07 11:23:12,942 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-07 11:23:12,942 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-07 11:23:12,942 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-07 11:23:12,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 11:23:12,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-07 11:23:12,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-07 11:23:12,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-07 11:23:12,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 11:23:12,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 11:23:12,945 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-07 11:23:13,053 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 11:23:13,055 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 11:23:13,720 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 11:23:13,720 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 11:23:14,309 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 11:23:14,309 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-07 11:23:14,309 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:23:14 BoogieIcfgContainer [2024-11-07 11:23:14,309 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 11:23:14,313 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 11:23:14,314 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 11:23:14,322 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 11:23:14,323 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 11:23:12" (1/3) ... [2024-11-07 11:23:14,323 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5faaa2e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:23:14, skipping insertion in model container [2024-11-07 11:23:14,324 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:23:12" (2/3) ... [2024-11-07 11:23:14,324 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5faaa2e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:23:14, skipping insertion in model container [2024-11-07 11:23:14,324 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:23:14" (3/3) ... [2024-11-07 11:23:14,325 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-subst.wvr.c [2024-11-07 11:23:14,340 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 11:23:14,340 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-07 11:23:14,340 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 11:23:14,426 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-07 11:23:14,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 31 transitions, 83 flow [2024-11-07 11:23:14,531 INFO L124 PetriNetUnfolderBase]: 6/28 cut-off events. [2024-11-07 11:23:14,534 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-07 11:23:14,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 28 events. 6/28 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 13 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2024-11-07 11:23:14,539 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 31 transitions, 83 flow [2024-11-07 11:23:14,542 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 27 transitions, 72 flow [2024-11-07 11:23:14,554 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 11:23:14,565 INFO L333 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, 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;@6e07e1cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 11:23:14,565 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-07 11:23:14,580 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 11:23:14,581 INFO L124 PetriNetUnfolderBase]: 6/26 cut-off events. [2024-11-07 11:23:14,582 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-07 11:23:14,582 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:23:14,583 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:23:14,584 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:23:14,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:23:14,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1832792802, now seen corresponding path program 1 times [2024-11-07 11:23:14,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:23:14,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496628106] [2024-11-07 11:23:14,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:23:14,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:23:14,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:15,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:23:15,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:23:15,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496628106] [2024-11-07 11:23:15,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496628106] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:23:15,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:23:15,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 11:23:15,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958983038] [2024-11-07 11:23:15,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:23:15,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 11:23:15,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:23:15,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 11:23:15,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 11:23:15,375 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-07 11:23:15,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 27 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2024-11-07 11:23:15,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:23:15,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-07 11:23:15,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:23:15,545 INFO L124 PetriNetUnfolderBase]: 38/83 cut-off events. [2024-11-07 11:23:15,545 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-11-07 11:23:15,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 83 events. 38/83 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 139 event pairs, 32 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 120. Up to 82 conditions per place. [2024-11-07 11:23:15,549 INFO L140 encePairwiseOnDemand]: 28/31 looper letters, 25 selfloop transitions, 2 changer transitions 0/28 dead transitions. [2024-11-07 11:23:15,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 28 transitions, 128 flow [2024-11-07 11:23:15,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 11:23:15,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 11:23:15,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 40 transitions. [2024-11-07 11:23:15,568 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2024-11-07 11:23:15,570 INFO L175 Difference]: Start difference. First operand has 31 places, 27 transitions, 72 flow. Second operand 3 states and 40 transitions. [2024-11-07 11:23:15,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 28 transitions, 128 flow [2024-11-07 11:23:15,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 28 transitions, 116 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-07 11:23:15,580 INFO L231 Difference]: Finished difference. Result has 28 places, 28 transitions, 72 flow [2024-11-07 11:23:15,582 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=28, PETRI_TRANSITIONS=28} [2024-11-07 11:23:15,587 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, -3 predicate places. [2024-11-07 11:23:15,587 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 28 transitions, 72 flow [2024-11-07 11:23:15,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2024-11-07 11:23:15,588 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:23:15,588 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:23:15,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 11:23:15,589 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:23:15,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:23:15,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1211915053, now seen corresponding path program 1 times [2024-11-07 11:23:15,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:23:15,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354973730] [2024-11-07 11:23:15,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:23:15,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:23:15,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:15,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:23:15,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:23:15,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354973730] [2024-11-07 11:23:15,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354973730] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:23:15,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:23:15,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 11:23:15,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135475358] [2024-11-07 11:23:15,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:23:15,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:23:15,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:23:15,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:23:15,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:23:15,880 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-07 11:23:15,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 28 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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) [2024-11-07 11:23:15,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:23:15,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-07 11:23:15,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:23:16,008 INFO L124 PetriNetUnfolderBase]: 38/84 cut-off events. [2024-11-07 11:23:16,008 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 11:23:16,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 84 events. 38/84 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 138 event pairs, 32 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 172. Up to 81 conditions per place. [2024-11-07 11:23:16,010 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 24 selfloop transitions, 4 changer transitions 0/29 dead transitions. [2024-11-07 11:23:16,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 29 transitions, 130 flow [2024-11-07 11:23:16,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 11:23:16,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 11:23:16,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 45 transitions. [2024-11-07 11:23:16,011 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-11-07 11:23:16,011 INFO L175 Difference]: Start difference. First operand has 28 places, 28 transitions, 72 flow. Second operand 4 states and 45 transitions. [2024-11-07 11:23:16,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 29 transitions, 130 flow [2024-11-07 11:23:16,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 126 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-07 11:23:16,013 INFO L231 Difference]: Finished difference. Result has 31 places, 29 transitions, 86 flow [2024-11-07 11:23:16,013 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=86, PETRI_PLACES=31, PETRI_TRANSITIONS=29} [2024-11-07 11:23:16,014 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 0 predicate places. [2024-11-07 11:23:16,014 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 29 transitions, 86 flow [2024-11-07 11:23:16,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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) [2024-11-07 11:23:16,014 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:23:16,014 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:23:16,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 11:23:16,015 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:23:16,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:23:16,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1038909340, now seen corresponding path program 1 times [2024-11-07 11:23:16,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:23:16,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078592874] [2024-11-07 11:23:16,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:23:16,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:23:16,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:16,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:23:16,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:23:16,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078592874] [2024-11-07 11:23:16,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078592874] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:23:16,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:23:16,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 11:23:16,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195553608] [2024-11-07 11:23:16,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:23:16,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:23:16,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:23:16,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:23:16,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:23:16,278 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-07 11:23:16,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 29 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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) [2024-11-07 11:23:16,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:23:16,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-07 11:23:16,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:23:16,413 INFO L124 PetriNetUnfolderBase]: 38/85 cut-off events. [2024-11-07 11:23:16,414 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 11:23:16,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 85 events. 38/85 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 138 event pairs, 32 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 172. Up to 82 conditions per place. [2024-11-07 11:23:16,415 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 25 selfloop transitions, 4 changer transitions 0/30 dead transitions. [2024-11-07 11:23:16,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 30 transitions, 146 flow [2024-11-07 11:23:16,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 11:23:16,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 11:23:16,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 45 transitions. [2024-11-07 11:23:16,420 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-11-07 11:23:16,420 INFO L175 Difference]: Start difference. First operand has 31 places, 29 transitions, 86 flow. Second operand 4 states and 45 transitions. [2024-11-07 11:23:16,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 30 transitions, 146 flow [2024-11-07 11:23:16,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 30 transitions, 145 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 11:23:16,421 INFO L231 Difference]: Finished difference. Result has 34 places, 30 transitions, 103 flow [2024-11-07 11:23:16,421 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=103, PETRI_PLACES=34, PETRI_TRANSITIONS=30} [2024-11-07 11:23:16,424 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 3 predicate places. [2024-11-07 11:23:16,424 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 30 transitions, 103 flow [2024-11-07 11:23:16,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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) [2024-11-07 11:23:16,424 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:23:16,424 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:23:16,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 11:23:16,425 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:23:16,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:23:16,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1091596161, now seen corresponding path program 1 times [2024-11-07 11:23:16,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:23:16,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157753354] [2024-11-07 11:23:16,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:23:16,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:23:16,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:16,653 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:23:16,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:23:16,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157753354] [2024-11-07 11:23:16,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157753354] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:23:16,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:23:16,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 11:23:16,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812162199] [2024-11-07 11:23:16,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:23:16,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:23:16,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:23:16,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:23:16,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:23:16,657 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-07 11:23:16,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 103 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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) [2024-11-07 11:23:16,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:23:16,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-07 11:23:16,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:23:16,783 INFO L124 PetriNetUnfolderBase]: 38/86 cut-off events. [2024-11-07 11:23:16,783 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-07 11:23:16,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 86 events. 38/86 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 138 event pairs, 32 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 179. Up to 84 conditions per place. [2024-11-07 11:23:16,785 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 27 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2024-11-07 11:23:16,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 31 transitions, 165 flow [2024-11-07 11:23:16,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 11:23:16,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 11:23:16,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 44 transitions. [2024-11-07 11:23:16,788 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-11-07 11:23:16,788 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 103 flow. Second operand 4 states and 44 transitions. [2024-11-07 11:23:16,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 31 transitions, 165 flow [2024-11-07 11:23:16,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 31 transitions, 161 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 11:23:16,790 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 113 flow [2024-11-07 11:23:16,790 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=113, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2024-11-07 11:23:16,790 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 5 predicate places. [2024-11-07 11:23:16,790 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 113 flow [2024-11-07 11:23:16,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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) [2024-11-07 11:23:16,791 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:23:16,791 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:23:16,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 11:23:16,792 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:23:16,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:23:16,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1484568796, now seen corresponding path program 1 times [2024-11-07 11:23:16,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:23:16,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870197529] [2024-11-07 11:23:16,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:23:16,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:23:16,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:17,005 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-07 11:23:17,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:23:17,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870197529] [2024-11-07 11:23:17,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870197529] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:23:17,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:23:17,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 11:23:17,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813600656] [2024-11-07 11:23:17,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:23:17,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:23:17,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:23:17,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:23:17,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:23:17,008 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-07 11:23:17,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 113 flow. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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) [2024-11-07 11:23:17,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:23:17,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-07 11:23:17,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:23:17,117 INFO L124 PetriNetUnfolderBase]: 38/87 cut-off events. [2024-11-07 11:23:17,118 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-07 11:23:17,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 87 events. 38/87 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 138 event pairs, 32 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 185. Up to 85 conditions per place. [2024-11-07 11:23:17,119 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 28 selfloop transitions, 3 changer transitions 0/32 dead transitions. [2024-11-07 11:23:17,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 32 transitions, 177 flow [2024-11-07 11:23:17,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 11:23:17,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 11:23:17,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 44 transitions. [2024-11-07 11:23:17,122 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-11-07 11:23:17,122 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 113 flow. Second operand 4 states and 44 transitions. [2024-11-07 11:23:17,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 32 transitions, 177 flow [2024-11-07 11:23:17,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 32 transitions, 171 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-07 11:23:17,123 INFO L231 Difference]: Finished difference. Result has 38 places, 32 transitions, 121 flow [2024-11-07 11:23:17,123 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=121, PETRI_PLACES=38, PETRI_TRANSITIONS=32} [2024-11-07 11:23:17,124 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2024-11-07 11:23:17,124 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 32 transitions, 121 flow [2024-11-07 11:23:17,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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) [2024-11-07 11:23:17,125 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:23:17,125 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:23:17,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-07 11:23:17,125 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:23:17,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:23:17,127 INFO L85 PathProgramCache]: Analyzing trace with hash 667979527, now seen corresponding path program 1 times [2024-11-07 11:23:17,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:23:17,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210427027] [2024-11-07 11:23:17,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:23:17,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:23:17,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:17,338 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 11:23:17,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:23:17,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210427027] [2024-11-07 11:23:17,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210427027] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:23:17,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:23:17,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 11:23:17,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638189060] [2024-11-07 11:23:17,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:23:17,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:23:17,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:23:17,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:23:17,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:23:17,342 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-07 11:23:17,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 121 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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) [2024-11-07 11:23:17,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:23:17,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-07 11:23:17,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:23:17,460 INFO L124 PetriNetUnfolderBase]: 38/88 cut-off events. [2024-11-07 11:23:17,461 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-11-07 11:23:17,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 88 events. 38/88 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 138 event pairs, 32 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 190. Up to 86 conditions per place. [2024-11-07 11:23:17,462 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 29 selfloop transitions, 3 changer transitions 0/33 dead transitions. [2024-11-07 11:23:17,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 33 transitions, 187 flow [2024-11-07 11:23:17,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 11:23:17,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 11:23:17,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 44 transitions. [2024-11-07 11:23:17,466 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-11-07 11:23:17,466 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 121 flow. Second operand 4 states and 44 transitions. [2024-11-07 11:23:17,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 33 transitions, 187 flow [2024-11-07 11:23:17,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 33 transitions, 181 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-07 11:23:17,468 INFO L231 Difference]: Finished difference. Result has 40 places, 33 transitions, 129 flow [2024-11-07 11:23:17,468 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=129, PETRI_PLACES=40, PETRI_TRANSITIONS=33} [2024-11-07 11:23:17,469 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2024-11-07 11:23:17,469 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 33 transitions, 129 flow [2024-11-07 11:23:17,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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) [2024-11-07 11:23:17,469 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:23:17,469 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:23:17,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-07 11:23:17,470 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:23:17,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:23:17,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1966291484, now seen corresponding path program 1 times [2024-11-07 11:23:17,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:23:17,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390035219] [2024-11-07 11:23:17,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:23:17,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:23:17,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:22,909 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-07 11:23:22,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:23:22,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390035219] [2024-11-07 11:23:22,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390035219] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:23:22,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235891976] [2024-11-07 11:23:22,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:23:22,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:23:22,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:23:22,913 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:23:22,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-07 11:23:23,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:23:23,115 INFO L255 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-07 11:23:23,125 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:23:34,195 WARN L286 SmtUtils]: Spent 6.50s on a formula simplification that was a NOOP. DAG size: 1142 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-07 11:23:34,196 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:23:34,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 19 select indices, 19 select index equivalence classes, 0 disjoint index pairs (out of 171 index pairs), introduced 19 new quantified variables, introduced 171 case distinctions, treesize of input 1352 treesize of output 4148 [2024-11-07 11:23:42,870 WARN L286 SmtUtils]: Spent 8.46s on a formula simplification that was a NOOP. DAG size: 1122 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-07 11:23:42,870 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:23:42,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 19 select indices, 19 select index equivalence classes, 0 disjoint index pairs (out of 171 index pairs), introduced 19 new quantified variables, introduced 171 case distinctions, treesize of input 680 treesize of output 3236