./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-word-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-word-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', '1c6ecf58df9dd6f4f380af0d7ef563f293bde5430d47e04b9ba5ac44168fc198'] 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-word-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 1c6ecf58df9dd6f4f380af0d7ef563f293bde5430d47e04b9ba5ac44168fc198 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 11:24:12,903 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 11:24:13,007 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-07 11:24:13,014 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 11:24:13,015 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 11:24:13,044 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 11:24:13,046 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 11:24:13,046 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 11:24:13,047 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 11:24:13,047 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 11:24:13,047 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 11:24:13,047 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 11:24:13,048 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 11:24:13,048 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 11:24:13,048 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 11:24:13,048 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 11:24:13,048 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 11:24:13,048 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 11:24:13,048 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 11:24:13,049 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 11:24:13,049 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 11:24:13,049 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 11:24:13,049 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 11:24:13,049 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 11:24:13,049 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 11:24:13,049 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 11:24:13,049 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 11:24:13,050 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 11:24:13,050 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 11:24:13,050 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 11:24:13,050 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 11:24:13,050 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 11:24:13,050 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:24:13,050 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 11:24:13,051 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 11:24:13,051 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 11:24:13,051 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 11:24:13,051 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 11:24:13,051 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 11:24:13,052 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 11:24:13,052 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 11:24:13,052 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 11:24:13,052 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 -> 1c6ecf58df9dd6f4f380af0d7ef563f293bde5430d47e04b9ba5ac44168fc198 [2024-11-07 11:24:13,336 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 11:24:13,342 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 11:24:13,344 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 11:24:13,345 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 11:24:13,345 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 11:24:13,346 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2024-11-07 11:24:14,655 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 11:24:14,877 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 11:24:14,878 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2024-11-07 11:24:14,886 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c939ebd4f/6ff9f3031b284f6c81d432a3cea2d0d9/FLAG9991bf3a5 [2024-11-07 11:24:14,901 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c939ebd4f/6ff9f3031b284f6c81d432a3cea2d0d9 [2024-11-07 11:24:14,903 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 11:24:14,904 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 11:24:14,905 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 11:24:14,905 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 11:24:14,909 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 11:24:14,910 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:24:14" (1/1) ... [2024-11-07 11:24:14,911 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e7b022 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:24:14, skipping insertion in model container [2024-11-07 11:24:14,911 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:24:14" (1/1) ... [2024-11-07 11:24:14,926 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 11:24:15,099 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-word-subst.wvr.c[3384,3397] [2024-11-07 11:24:15,115 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:24:15,127 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 11:24:15,164 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-word-subst.wvr.c[3384,3397] [2024-11-07 11:24:15,167 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:24:15,185 INFO L204 MainTranslator]: Completed translation [2024-11-07 11:24:15,186 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:24:15 WrapperNode [2024-11-07 11:24:15,187 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 11:24:15,188 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 11:24:15,189 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 11:24:15,189 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 11:24:15,195 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:24:15" (1/1) ... [2024-11-07 11:24:15,207 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:24:15" (1/1) ... [2024-11-07 11:24:15,241 INFO L138 Inliner]: procedures = 24, calls = 30, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 169 [2024-11-07 11:24:15,242 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 11:24:15,242 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 11:24:15,244 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 11:24:15,244 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 11:24:15,253 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:24:15" (1/1) ... [2024-11-07 11:24:15,254 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:24:15" (1/1) ... [2024-11-07 11:24:15,259 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:24:15" (1/1) ... [2024-11-07 11:24:15,292 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-07 11:24:15,292 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:24:15" (1/1) ... [2024-11-07 11:24:15,292 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:24:15" (1/1) ... [2024-11-07 11:24:15,305 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:24:15" (1/1) ... [2024-11-07 11:24:15,313 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:24:15" (1/1) ... [2024-11-07 11:24:15,318 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:24:15" (1/1) ... [2024-11-07 11:24:15,323 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:24:15" (1/1) ... [2024-11-07 11:24:15,326 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 11:24:15,331 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 11:24:15,331 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 11:24:15,331 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 11:24:15,332 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:24:15" (1/1) ... [2024-11-07 11:24:15,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:24:15,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:24:15,369 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 11:24:15,372 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 11:24:15,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 11:24:15,399 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-07 11:24:15,400 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-07 11:24:15,400 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-07 11:24:15,400 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-07 11:24:15,400 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-07 11:24:15,400 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-07 11:24:15,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 11:24:15,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-07 11:24:15,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-07 11:24:15,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-07 11:24:15,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-07 11:24:15,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 11:24:15,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 11:24:15,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-07 11:24:15,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-07 11:24:15,403 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 11:24:15,539 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 11:24:15,541 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 11:24:15,948 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 11:24:15,948 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 11:24:16,231 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 11:24:16,232 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-07 11:24:16,232 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:24:16 BoogieIcfgContainer [2024-11-07 11:24:16,233 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 11:24:16,234 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 11:24:16,235 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 11:24:16,239 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 11:24:16,239 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 11:24:14" (1/3) ... [2024-11-07 11:24:16,240 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f6bc880 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:24:16, skipping insertion in model container [2024-11-07 11:24:16,240 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:24:15" (2/3) ... [2024-11-07 11:24:16,240 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f6bc880 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:24:16, skipping insertion in model container [2024-11-07 11:24:16,240 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:24:16" (3/3) ... [2024-11-07 11:24:16,241 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-subst.wvr.c [2024-11-07 11:24:16,256 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 11:24:16,256 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-07 11:24:16,256 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 11:24:16,322 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-07 11:24:16,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 49 transitions, 119 flow [2024-11-07 11:24:16,405 INFO L124 PetriNetUnfolderBase]: 12/46 cut-off events. [2024-11-07 11:24:16,408 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-07 11:24:16,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 12/46 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 74 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2024-11-07 11:24:16,412 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 49 transitions, 119 flow [2024-11-07 11:24:16,416 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 45 transitions, 108 flow [2024-11-07 11:24:16,429 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 11:24:16,442 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;@114663e5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 11:24:16,442 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-07 11:24:16,460 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 11:24:16,461 INFO L124 PetriNetUnfolderBase]: 12/44 cut-off events. [2024-11-07 11:24:16,461 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-07 11:24:16,461 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:24:16,462 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 11:24:16,462 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 11:24:16,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:24:16,467 INFO L85 PathProgramCache]: Analyzing trace with hash -220026163, now seen corresponding path program 1 times [2024-11-07 11:24:16,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:24:16,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423797538] [2024-11-07 11:24:16,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:24:16,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:24:16,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:24:17,083 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 11:24:17,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:24:17,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423797538] [2024-11-07 11:24:17,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423797538] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:24:17,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:24:17,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 11:24:17,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003252554] [2024-11-07 11:24:17,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:24:17,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 11:24:17,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:24:17,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 11:24:17,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 11:24:17,120 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-07 11:24:17,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 45 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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 11:24:17,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:24:17,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-07 11:24:17,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:24:17,860 INFO L124 PetriNetUnfolderBase]: 3738/4998 cut-off events. [2024-11-07 11:24:17,861 INFO L125 PetriNetUnfolderBase]: For 277/277 co-relation queries the response was YES. [2024-11-07 11:24:17,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10276 conditions, 4998 events. 3738/4998 cut-off events. For 277/277 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 20524 event pairs, 1692 based on Foata normal form. 1/3664 useless extension candidates. Maximal degree in co-relation 9368. Up to 3459 conditions per place. [2024-11-07 11:24:17,900 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 65 selfloop transitions, 2 changer transitions 5/73 dead transitions. [2024-11-07 11:24:17,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 73 transitions, 323 flow [2024-11-07 11:24:17,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 11:24:17,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 11:24:17,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2024-11-07 11:24:17,912 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5782312925170068 [2024-11-07 11:24:17,913 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 108 flow. Second operand 3 states and 85 transitions. [2024-11-07 11:24:17,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 73 transitions, 323 flow [2024-11-07 11:24:17,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 73 transitions, 301 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-07 11:24:17,930 INFO L231 Difference]: Finished difference. Result has 40 places, 45 transitions, 106 flow [2024-11-07 11:24:17,934 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=40, PETRI_TRANSITIONS=45} [2024-11-07 11:24:17,937 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2024-11-07 11:24:17,938 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 45 transitions, 106 flow [2024-11-07 11:24:17,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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 11:24:17,938 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:24:17,938 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 11:24:17,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 11:24:17,939 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 11:24:17,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:24:17,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1290270659, now seen corresponding path program 1 times [2024-11-07 11:24:17,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:24:17,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510428573] [2024-11-07 11:24:17,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:24:17,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:24:18,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:24:19,137 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 11:24:19,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:24:19,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510428573] [2024-11-07 11:24:19,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510428573] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:24:19,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:24:19,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-07 11:24:19,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136259025] [2024-11-07 11:24:19,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:24:19,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 11:24:19,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:24:19,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 11:24:19,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-07 11:24:19,143 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-07 11:24:19,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 45 transitions, 106 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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 11:24:19,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:24:19,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-07 11:24:19,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:24:20,018 INFO L124 PetriNetUnfolderBase]: 3507/4756 cut-off events. [2024-11-07 11:24:20,021 INFO L125 PetriNetUnfolderBase]: For 334/334 co-relation queries the response was YES. [2024-11-07 11:24:20,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10209 conditions, 4756 events. 3507/4756 cut-off events. For 334/334 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 20957 event pairs, 377 based on Foata normal form. 1/3751 useless extension candidates. Maximal degree in co-relation 8283. Up to 3012 conditions per place. [2024-11-07 11:24:20,057 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 87 selfloop transitions, 9 changer transitions 14/111 dead transitions. [2024-11-07 11:24:20,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 111 transitions, 485 flow [2024-11-07 11:24:20,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 11:24:20,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 11:24:20,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-11-07 11:24:20,062 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4489795918367347 [2024-11-07 11:24:20,062 INFO L175 Difference]: Start difference. First operand has 40 places, 45 transitions, 106 flow. Second operand 6 states and 132 transitions. [2024-11-07 11:24:20,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 111 transitions, 485 flow [2024-11-07 11:24:20,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 111 transitions, 475 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-07 11:24:20,084 INFO L231 Difference]: Finished difference. Result has 49 places, 52 transitions, 170 flow [2024-11-07 11:24:20,085 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=170, PETRI_PLACES=49, PETRI_TRANSITIONS=52} [2024-11-07 11:24:20,086 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 6 predicate places. [2024-11-07 11:24:20,086 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 52 transitions, 170 flow [2024-11-07 11:24:20,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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 11:24:20,086 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:24:20,086 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 11:24:20,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 11:24:20,087 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 11:24:20,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:24:20,088 INFO L85 PathProgramCache]: Analyzing trace with hash 510529653, now seen corresponding path program 2 times [2024-11-07 11:24:20,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:24:20,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164464176] [2024-11-07 11:24:20,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:24:20,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:24:20,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:24:20,577 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 11:24:20,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:24:20,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164464176] [2024-11-07 11:24:20,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164464176] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:24:20,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:24:20,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 11:24:20,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746071130] [2024-11-07 11:24:20,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:24:20,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 11:24:20,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:24:20,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 11:24:20,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-07 11:24:20,579 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-07 11:24:20,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 52 transitions, 170 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 11:24:20,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:24:20,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-07 11:24:20,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:24:21,277 INFO L124 PetriNetUnfolderBase]: 4215/5817 cut-off events. [2024-11-07 11:24:21,278 INFO L125 PetriNetUnfolderBase]: For 1352/1352 co-relation queries the response was YES. [2024-11-07 11:24:21,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13038 conditions, 5817 events. 4215/5817 cut-off events. For 1352/1352 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 25580 event pairs, 2040 based on Foata normal form. 1/4988 useless extension candidates. Maximal degree in co-relation 13014. Up to 3779 conditions per place. [2024-11-07 11:24:21,318 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 88 selfloop transitions, 3 changer transitions 15/107 dead transitions. [2024-11-07 11:24:21,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 107 transitions, 534 flow [2024-11-07 11:24:21,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:24:21,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:24:21,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2024-11-07 11:24:21,320 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47346938775510206 [2024-11-07 11:24:21,320 INFO L175 Difference]: Start difference. First operand has 49 places, 52 transitions, 170 flow. Second operand 5 states and 116 transitions. [2024-11-07 11:24:21,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 107 transitions, 534 flow [2024-11-07 11:24:21,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 107 transitions, 528 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-07 11:24:21,328 INFO L231 Difference]: Finished difference. Result has 54 places, 53 transitions, 188 flow [2024-11-07 11:24:21,328 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=188, PETRI_PLACES=54, PETRI_TRANSITIONS=53} [2024-11-07 11:24:21,329 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 11 predicate places. [2024-11-07 11:24:21,329 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 53 transitions, 188 flow [2024-11-07 11:24:21,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 11:24:21,329 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:24:21,330 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 11:24:21,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 11:24:21,330 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 11:24:21,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:24:21,330 INFO L85 PathProgramCache]: Analyzing trace with hash -574546763, now seen corresponding path program 3 times [2024-11-07 11:24:21,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:24:21,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886050261] [2024-11-07 11:24:21,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:24:21,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:24:21,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:24:21,812 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 11:24:21,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:24:21,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886050261] [2024-11-07 11:24:21,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886050261] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:24:21,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:24:21,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 11:24:21,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214959701] [2024-11-07 11:24:21,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:24:21,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 11:24:21,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:24:21,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 11:24:21,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 11:24:21,815 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-07 11:24:21,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 53 transitions, 188 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 11:24:21,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:24:21,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-07 11:24:21,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:24:22,529 INFO L124 PetriNetUnfolderBase]: 4645/6434 cut-off events. [2024-11-07 11:24:22,529 INFO L125 PetriNetUnfolderBase]: For 2951/2951 co-relation queries the response was YES. [2024-11-07 11:24:22,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14892 conditions, 6434 events. 4645/6434 cut-off events. For 2951/2951 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 30979 event pairs, 683 based on Foata normal form. 1/5525 useless extension candidates. Maximal degree in co-relation 14861. Up to 4403 conditions per place. [2024-11-07 11:24:22,583 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 92 selfloop transitions, 3 changer transitions 15/111 dead transitions. [2024-11-07 11:24:22,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 111 transitions, 563 flow [2024-11-07 11:24:22,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:24:22,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:24:22,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-11-07 11:24:22,585 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-11-07 11:24:22,585 INFO L175 Difference]: Start difference. First operand has 54 places, 53 transitions, 188 flow. Second operand 5 states and 120 transitions. [2024-11-07 11:24:22,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 111 transitions, 563 flow [2024-11-07 11:24:22,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 111 transitions, 552 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-07 11:24:22,608 INFO L231 Difference]: Finished difference. Result has 58 places, 54 transitions, 203 flow [2024-11-07 11:24:22,609 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=203, PETRI_PLACES=58, PETRI_TRANSITIONS=54} [2024-11-07 11:24:22,610 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 15 predicate places. [2024-11-07 11:24:22,610 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 54 transitions, 203 flow [2024-11-07 11:24:22,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 11:24:22,611 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:24:22,611 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 11:24:22,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 11:24:22,611 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 11:24:22,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:24:22,612 INFO L85 PathProgramCache]: Analyzing trace with hash -330068201, now seen corresponding path program 4 times [2024-11-07 11:24:22,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:24:22,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252814783] [2024-11-07 11:24:22,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:24:22,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:24:22,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:24:23,251 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 11:24:23,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:24:23,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252814783] [2024-11-07 11:24:23,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252814783] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:24:23,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:24:23,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-07 11:24:23,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041933719] [2024-11-07 11:24:23,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:24:23,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 11:24:23,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:24:23,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 11:24:23,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-07 11:24:23,254 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-07 11:24:23,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 203 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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 11:24:23,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:24:23,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-07 11:24:23,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:24:24,114 INFO L124 PetriNetUnfolderBase]: 5270/7359 cut-off events. [2024-11-07 11:24:24,114 INFO L125 PetriNetUnfolderBase]: For 5567/5567 co-relation queries the response was YES. [2024-11-07 11:24:24,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17409 conditions, 7359 events. 5270/7359 cut-off events. For 5567/5567 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 34046 event pairs, 2962 based on Foata normal form. 1/6346 useless extension candidates. Maximal degree in co-relation 17368. Up to 5333 conditions per place. [2024-11-07 11:24:24,159 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 80 selfloop transitions, 11 changer transitions 16/108 dead transitions. [2024-11-07 11:24:24,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 108 transitions, 586 flow [2024-11-07 11:24:24,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 11:24:24,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 11:24:24,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 124 transitions. [2024-11-07 11:24:24,163 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4217687074829932 [2024-11-07 11:24:24,163 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 203 flow. Second operand 6 states and 124 transitions. [2024-11-07 11:24:24,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 108 transitions, 586 flow [2024-11-07 11:24:24,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 108 transitions, 570 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-11-07 11:24:24,185 INFO L231 Difference]: Finished difference. Result has 62 places, 55 transitions, 242 flow [2024-11-07 11:24:24,185 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=242, PETRI_PLACES=62, PETRI_TRANSITIONS=55} [2024-11-07 11:24:24,185 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 19 predicate places. [2024-11-07 11:24:24,186 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 55 transitions, 242 flow [2024-11-07 11:24:24,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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 11:24:24,186 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:24:24,186 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 11:24:24,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-07 11:24:24,186 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 11:24:24,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:24:24,187 INFO L85 PathProgramCache]: Analyzing trace with hash -458472143, now seen corresponding path program 5 times [2024-11-07 11:24:24,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:24:24,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036500097] [2024-11-07 11:24:24,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:24:24,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:24:24,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:24:24,582 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 11:24:24,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:24:24,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036500097] [2024-11-07 11:24:24,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036500097] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:24:24,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:24:24,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 11:24:24,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257748624] [2024-11-07 11:24:24,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:24:24,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 11:24:24,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:24:24,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 11:24:24,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 11:24:24,584 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-07 11:24:24,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 55 transitions, 242 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 11:24:24,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:24:24,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-07 11:24:24,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:24:25,392 INFO L124 PetriNetUnfolderBase]: 5153/7169 cut-off events. [2024-11-07 11:24:25,392 INFO L125 PetriNetUnfolderBase]: For 6533/6533 co-relation queries the response was YES. [2024-11-07 11:24:25,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17299 conditions, 7169 events. 5153/7169 cut-off events. For 6533/6533 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 33292 event pairs, 2769 based on Foata normal form. 1/6164 useless extension candidates. Maximal degree in co-relation 17261. Up to 5151 conditions per place. [2024-11-07 11:24:25,428 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 97 selfloop transitions, 4 changer transitions 14/116 dead transitions. [2024-11-07 11:24:25,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 116 transitions, 635 flow [2024-11-07 11:24:25,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:24:25,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:24:25,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-11-07 11:24:25,430 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5020408163265306 [2024-11-07 11:24:25,430 INFO L175 Difference]: Start difference. First operand has 62 places, 55 transitions, 242 flow. Second operand 5 states and 123 transitions. [2024-11-07 11:24:25,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 116 transitions, 635 flow [2024-11-07 11:24:25,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 116 transitions, 615 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-11-07 11:24:25,451 INFO L231 Difference]: Finished difference. Result has 64 places, 55 transitions, 238 flow [2024-11-07 11:24:25,451 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=238, PETRI_PLACES=64, PETRI_TRANSITIONS=55} [2024-11-07 11:24:25,452 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 21 predicate places. [2024-11-07 11:24:25,452 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 55 transitions, 238 flow [2024-11-07 11:24:25,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 11:24:25,453 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:24:25,453 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 11:24:25,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-07 11:24:25,453 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 11:24:25,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:24:25,454 INFO L85 PathProgramCache]: Analyzing trace with hash 871185299, now seen corresponding path program 6 times [2024-11-07 11:24:25,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:24:25,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209929121] [2024-11-07 11:24:25,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:24:25,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:24:25,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:24:25,790 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 11:24:25,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:24:25,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209929121] [2024-11-07 11:24:25,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209929121] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:24:25,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:24:25,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 11:24:25,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970170970] [2024-11-07 11:24:25,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:24:25,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 11:24:25,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:24:25,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 11:24:25,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 11:24:25,791 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-07 11:24:25,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 55 transitions, 238 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 11:24:25,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:24:25,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-07 11:24:25,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:24:26,482 INFO L124 PetriNetUnfolderBase]: 5041/7000 cut-off events. [2024-11-07 11:24:26,482 INFO L125 PetriNetUnfolderBase]: For 7038/7038 co-relation queries the response was YES. [2024-11-07 11:24:26,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16863 conditions, 7000 events. 5041/7000 cut-off events. For 7038/7038 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 31621 event pairs, 2870 based on Foata normal form. 1/6003 useless extension candidates. Maximal degree in co-relation 16828. Up to 5338 conditions per place. [2024-11-07 11:24:26,584 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 94 selfloop transitions, 3 changer transitions 14/112 dead transitions. [2024-11-07 11:24:26,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 112 transitions, 613 flow [2024-11-07 11:24:26,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:24:26,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:24:26,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-11-07 11:24:26,586 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2024-11-07 11:24:26,586 INFO L175 Difference]: Start difference. First operand has 64 places, 55 transitions, 238 flow. Second operand 5 states and 119 transitions. [2024-11-07 11:24:26,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 112 transitions, 613 flow [2024-11-07 11:24:26,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 112 transitions, 602 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-07 11:24:26,604 INFO L231 Difference]: Finished difference. Result has 65 places, 55 transitions, 240 flow [2024-11-07 11:24:26,604 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=240, PETRI_PLACES=65, PETRI_TRANSITIONS=55} [2024-11-07 11:24:26,606 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 22 predicate places. [2024-11-07 11:24:26,606 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 55 transitions, 240 flow [2024-11-07 11:24:26,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 11:24:26,606 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:24:26,606 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, 1] [2024-11-07 11:24:26,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-07 11:24:26,607 INFO L396 AbstractCegarLoop]: === Iteration 8 === 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 11:24:26,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:24:26,607 INFO L85 PathProgramCache]: Analyzing trace with hash 2016084104, now seen corresponding path program 1 times [2024-11-07 11:24:26,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:24:26,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998907236] [2024-11-07 11:24:26,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:24:26,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:24:26,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:24:26,700 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 11:24:26,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:24:26,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998907236] [2024-11-07 11:24:26,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998907236] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:24:26,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:24:26,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 11:24:26,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119682412] [2024-11-07 11:24:26,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:24:26,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:24:26,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:24:26,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:24:26,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:24:26,703 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-07 11:24:26,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 55 transitions, 240 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) [2024-11-07 11:24:26,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:24:26,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-07 11:24:26,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:24:27,399 INFO L124 PetriNetUnfolderBase]: 6044/8410 cut-off events. [2024-11-07 11:24:27,400 INFO L125 PetriNetUnfolderBase]: For 9162/9162 co-relation queries the response was YES. [2024-11-07 11:24:27,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20007 conditions, 8410 events. 6044/8410 cut-off events. For 9162/9162 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 40729 event pairs, 477 based on Foata normal form. 66/7236 useless extension candidates. Maximal degree in co-relation 19964. Up to 5299 conditions per place. [2024-11-07 11:24:27,460 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 94 selfloop transitions, 6 changer transitions 0/101 dead transitions. [2024-11-07 11:24:27,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 101 transitions, 582 flow [2024-11-07 11:24:27,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 11:24:27,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 11:24:27,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 105 transitions. [2024-11-07 11:24:27,462 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-11-07 11:24:27,462 INFO L175 Difference]: Start difference. First operand has 65 places, 55 transitions, 240 flow. Second operand 4 states and 105 transitions. [2024-11-07 11:24:27,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 101 transitions, 582 flow [2024-11-07 11:24:27,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 101 transitions, 573 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-07 11:24:27,485 INFO L231 Difference]: Finished difference. Result has 66 places, 60 transitions, 296 flow [2024-11-07 11:24:27,485 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=296, PETRI_PLACES=66, PETRI_TRANSITIONS=60} [2024-11-07 11:24:27,486 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 23 predicate places. [2024-11-07 11:24:27,486 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 60 transitions, 296 flow [2024-11-07 11:24:27,486 INFO L472 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) [2024-11-07 11:24:27,486 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:24:27,486 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, 1] [2024-11-07 11:24:27,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-07 11:24:27,487 INFO L396 AbstractCegarLoop]: === Iteration 9 === 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 11:24:27,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:24:27,487 INFO L85 PathProgramCache]: Analyzing trace with hash 895690072, now seen corresponding path program 2 times [2024-11-07 11:24:27,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:24:27,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434727922] [2024-11-07 11:24:27,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:24:27,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:24:27,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:24:27,573 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 11:24:27,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:24:27,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434727922] [2024-11-07 11:24:27,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434727922] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:24:27,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:24:27,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 11:24:27,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451798907] [2024-11-07 11:24:27,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:24:27,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:24:27,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:24:27,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:24:27,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:24:27,574 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-07 11:24:27,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 296 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) [2024-11-07 11:24:27,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:24:27,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-07 11:24:27,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:24:28,119 INFO L124 PetriNetUnfolderBase]: 5676/7907 cut-off events. [2024-11-07 11:24:28,119 INFO L125 PetriNetUnfolderBase]: For 8509/8509 co-relation queries the response was YES. [2024-11-07 11:24:28,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19576 conditions, 7907 events. 5676/7907 cut-off events. For 8509/8509 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 37476 event pairs, 637 based on Foata normal form. 66/6805 useless extension candidates. Maximal degree in co-relation 19511. Up to 4823 conditions per place. [2024-11-07 11:24:28,162 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 99 selfloop transitions, 8 changer transitions 0/108 dead transitions. [2024-11-07 11:24:28,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 108 transitions, 688 flow [2024-11-07 11:24:28,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 11:24:28,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 11:24:28,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 105 transitions. [2024-11-07 11:24:28,164 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-11-07 11:24:28,165 INFO L175 Difference]: Start difference. First operand has 66 places, 60 transitions, 296 flow. Second operand 4 states and 105 transitions. [2024-11-07 11:24:28,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 108 transitions, 688 flow [2024-11-07 11:24:28,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 108 transitions, 688 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 11:24:28,188 INFO L231 Difference]: Finished difference. Result has 72 places, 65 transitions, 385 flow [2024-11-07 11:24:28,188 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=385, PETRI_PLACES=72, PETRI_TRANSITIONS=65} [2024-11-07 11:24:28,190 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 29 predicate places. [2024-11-07 11:24:28,190 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 65 transitions, 385 flow [2024-11-07 11:24:28,191 INFO L472 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) [2024-11-07 11:24:28,191 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:24:28,191 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, 1] [2024-11-07 11:24:28,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-07 11:24:28,192 INFO L396 AbstractCegarLoop]: === Iteration 10 === 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 11:24:28,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:24:28,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1223396110, now seen corresponding path program 3 times [2024-11-07 11:24:28,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:24:28,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334417349] [2024-11-07 11:24:28,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:24:28,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:24:28,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:24:28,277 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 11:24:28,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:24:28,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334417349] [2024-11-07 11:24:28,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334417349] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:24:28,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:24:28,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 11:24:28,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351227166] [2024-11-07 11:24:28,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:24:28,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:24:28,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:24:28,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:24:28,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:24:28,279 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-07 11:24:28,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 65 transitions, 385 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) [2024-11-07 11:24:28,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:24:28,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-07 11:24:28,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:24:28,885 INFO L124 PetriNetUnfolderBase]: 5348/7444 cut-off events. [2024-11-07 11:24:28,885 INFO L125 PetriNetUnfolderBase]: For 10280/10280 co-relation queries the response was YES. [2024-11-07 11:24:28,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19373 conditions, 7444 events. 5348/7444 cut-off events. For 10280/10280 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 35152 event pairs, 1270 based on Foata normal form. 26/6374 useless extension candidates. Maximal degree in co-relation 19305. Up to 5180 conditions per place. [2024-11-07 11:24:28,923 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 99 selfloop transitions, 11 changer transitions 2/113 dead transitions. [2024-11-07 11:24:28,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 113 transitions, 742 flow [2024-11-07 11:24:28,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:24:28,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:24:28,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-11-07 11:24:28,925 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4775510204081633 [2024-11-07 11:24:28,925 INFO L175 Difference]: Start difference. First operand has 72 places, 65 transitions, 385 flow. Second operand 5 states and 117 transitions. [2024-11-07 11:24:28,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 113 transitions, 742 flow [2024-11-07 11:24:28,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 113 transitions, 740 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-07 11:24:28,950 INFO L231 Difference]: Finished difference. Result has 77 places, 66 transitions, 415 flow [2024-11-07 11:24:28,951 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=415, PETRI_PLACES=77, PETRI_TRANSITIONS=66} [2024-11-07 11:24:28,953 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 34 predicate places. [2024-11-07 11:24:28,954 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 66 transitions, 415 flow [2024-11-07 11:24:28,954 INFO L472 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) [2024-11-07 11:24:28,954 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:24:28,954 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, 1] [2024-11-07 11:24:28,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-07 11:24:28,954 INFO L396 AbstractCegarLoop]: === Iteration 11 === 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 11:24:28,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:24:28,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1591909984, now seen corresponding path program 1 times [2024-11-07 11:24:28,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:24:28,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684281283] [2024-11-07 11:24:28,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:24:28,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:24:28,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:24:29,029 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 11:24:29,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:24:29,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684281283] [2024-11-07 11:24:29,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684281283] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:24:29,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:24:29,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 11:24:29,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190788556] [2024-11-07 11:24:29,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:24:29,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:24:29,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:24:29,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:24:29,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:24:29,033 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-07 11:24:29,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 66 transitions, 415 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) [2024-11-07 11:24:29,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:24:29,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-07 11:24:29,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:24:29,649 INFO L124 PetriNetUnfolderBase]: 6218/8668 cut-off events. [2024-11-07 11:24:29,650 INFO L125 PetriNetUnfolderBase]: For 13282/13282 co-relation queries the response was YES. [2024-11-07 11:24:29,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22214 conditions, 8668 events. 6218/8668 cut-off events. For 13282/13282 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 42392 event pairs, 982 based on Foata normal form. 65/7425 useless extension candidates. Maximal degree in co-relation 22144. Up to 5977 conditions per place. [2024-11-07 11:24:29,696 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 97 selfloop transitions, 10 changer transitions 0/108 dead transitions. [2024-11-07 11:24:29,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 108 transitions, 754 flow [2024-11-07 11:24:29,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 11:24:29,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 11:24:29,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2024-11-07 11:24:29,697 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2024-11-07 11:24:29,698 INFO L175 Difference]: Start difference. First operand has 77 places, 66 transitions, 415 flow. Second operand 4 states and 104 transitions. [2024-11-07 11:24:29,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 108 transitions, 754 flow [2024-11-07 11:24:29,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 108 transitions, 719 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-11-07 11:24:29,733 INFO L231 Difference]: Finished difference. Result has 77 places, 69 transitions, 444 flow [2024-11-07 11:24:29,734 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=444, PETRI_PLACES=77, PETRI_TRANSITIONS=69} [2024-11-07 11:24:29,734 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 34 predicate places. [2024-11-07 11:24:29,736 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 69 transitions, 444 flow [2024-11-07 11:24:29,736 INFO L472 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) [2024-11-07 11:24:29,736 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:24:29,736 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, 1] [2024-11-07 11:24:29,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-07 11:24:29,737 INFO L396 AbstractCegarLoop]: === Iteration 12 === 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 11:24:29,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:24:29,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1076861620, now seen corresponding path program 2 times [2024-11-07 11:24:29,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:24:29,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185807438] [2024-11-07 11:24:29,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:24:29,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:24:29,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:24:29,811 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 11:24:29,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:24:29,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185807438] [2024-11-07 11:24:29,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185807438] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:24:29,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:24:29,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 11:24:29,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410670857] [2024-11-07 11:24:29,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:24:29,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:24:29,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:24:29,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:24:29,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:24:29,813 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-07 11:24:29,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 69 transitions, 444 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) [2024-11-07 11:24:29,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:24:29,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-07 11:24:29,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:24:30,412 INFO L124 PetriNetUnfolderBase]: 5884/8196 cut-off events. [2024-11-07 11:24:30,412 INFO L125 PetriNetUnfolderBase]: For 10758/10758 co-relation queries the response was YES. [2024-11-07 11:24:30,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21569 conditions, 8196 events. 5884/8196 cut-off events. For 10758/10758 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 39474 event pairs, 1560 based on Foata normal form. 27/6989 useless extension candidates. Maximal degree in co-relation 21501. Up to 5822 conditions per place. [2024-11-07 11:24:30,464 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 105 selfloop transitions, 11 changer transitions 3/120 dead transitions. [2024-11-07 11:24:30,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 120 transitions, 825 flow [2024-11-07 11:24:30,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:24:30,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:24:30,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-11-07 11:24:30,466 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-11-07 11:24:30,466 INFO L175 Difference]: Start difference. First operand has 77 places, 69 transitions, 444 flow. Second operand 5 states and 120 transitions. [2024-11-07 11:24:30,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 120 transitions, 825 flow [2024-11-07 11:24:30,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 120 transitions, 807 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-11-07 11:24:30,497 INFO L231 Difference]: Finished difference. Result has 81 places, 71 transitions, 478 flow [2024-11-07 11:24:30,497 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=478, PETRI_PLACES=81, PETRI_TRANSITIONS=71} [2024-11-07 11:24:30,499 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 38 predicate places. [2024-11-07 11:24:30,500 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 71 transitions, 478 flow [2024-11-07 11:24:30,500 INFO L472 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) [2024-11-07 11:24:30,500 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:24:30,500 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, 1] [2024-11-07 11:24:30,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-07 11:24:30,500 INFO L396 AbstractCegarLoop]: === Iteration 13 === 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 11:24:30,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:24:30,501 INFO L85 PathProgramCache]: Analyzing trace with hash 542634404, now seen corresponding path program 3 times [2024-11-07 11:24:30,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:24:30,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897055248] [2024-11-07 11:24:30,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:24:30,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:24:30,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:24:30,573 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 11:24:30,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:24:30,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897055248] [2024-11-07 11:24:30,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897055248] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:24:30,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:24:30,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 11:24:30,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200565824] [2024-11-07 11:24:30,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:24:30,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:24:30,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:24:30,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:24:30,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:24:30,575 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-07 11:24:30,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 71 transitions, 478 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) [2024-11-07 11:24:30,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:24:30,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-07 11:24:30,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:24:31,249 INFO L124 PetriNetUnfolderBase]: 5222/7261 cut-off events. [2024-11-07 11:24:31,251 INFO L125 PetriNetUnfolderBase]: For 12533/12533 co-relation queries the response was YES. [2024-11-07 11:24:31,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19390 conditions, 7261 events. 5222/7261 cut-off events. For 12533/12533 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 33784 event pairs, 2384 based on Foata normal form. 53/6226 useless extension candidates. Maximal degree in co-relation 19321. Up to 4857 conditions per place. [2024-11-07 11:24:31,309 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 118 selfloop transitions, 7 changer transitions 6/132 dead transitions. [2024-11-07 11:24:31,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 132 transitions, 882 flow [2024-11-07 11:24:31,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:24:31,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:24:31,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-11-07 11:24:31,313 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5224489795918368 [2024-11-07 11:24:31,313 INFO L175 Difference]: Start difference. First operand has 81 places, 71 transitions, 478 flow. Second operand 5 states and 128 transitions. [2024-11-07 11:24:31,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 132 transitions, 882 flow [2024-11-07 11:24:31,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 132 transitions, 868 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-07 11:24:31,349 INFO L231 Difference]: Finished difference. Result has 85 places, 69 transitions, 443 flow [2024-11-07 11:24:31,349 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=443, PETRI_PLACES=85, PETRI_TRANSITIONS=69} [2024-11-07 11:24:31,350 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 42 predicate places. [2024-11-07 11:24:31,350 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 69 transitions, 443 flow [2024-11-07 11:24:31,350 INFO L472 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) [2024-11-07 11:24:31,351 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:24:31,351 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, 1] [2024-11-07 11:24:31,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-07 11:24:31,351 INFO L396 AbstractCegarLoop]: === Iteration 14 === 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 11:24:31,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:24:31,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1097262630, now seen corresponding path program 4 times [2024-11-07 11:24:31,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:24:31,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743599568] [2024-11-07 11:24:31,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:24:31,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:24:31,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:24:31,441 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 11:24:31,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:24:31,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743599568] [2024-11-07 11:24:31,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743599568] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:24:31,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:24:31,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 11:24:31,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231310706] [2024-11-07 11:24:31,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:24:31,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:24:31,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:24:31,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:24:31,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:24:31,444 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-07 11:24:31,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 69 transitions, 443 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) [2024-11-07 11:24:31,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:24:31,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-07 11:24:31,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:24:32,057 INFO L124 PetriNetUnfolderBase]: 4621/6392 cut-off events. [2024-11-07 11:24:32,058 INFO L125 PetriNetUnfolderBase]: For 11663/11663 co-relation queries the response was YES. [2024-11-07 11:24:32,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16924 conditions, 6392 events. 4621/6392 cut-off events. For 11663/11663 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 28377 event pairs, 1094 based on Foata normal form. 65/5463 useless extension candidates. Maximal degree in co-relation 16854. Up to 5031 conditions per place. [2024-11-07 11:24:32,091 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 91 selfloop transitions, 10 changer transitions 2/104 dead transitions. [2024-11-07 11:24:32,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 104 transitions, 735 flow [2024-11-07 11:24:32,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 11:24:32,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 11:24:32,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 100 transitions. [2024-11-07 11:24:32,093 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5102040816326531 [2024-11-07 11:24:32,093 INFO L175 Difference]: Start difference. First operand has 85 places, 69 transitions, 443 flow. Second operand 4 states and 100 transitions. [2024-11-07 11:24:32,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 104 transitions, 735 flow [2024-11-07 11:24:32,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 104 transitions, 709 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-11-07 11:24:32,119 INFO L231 Difference]: Finished difference. Result has 83 places, 68 transitions, 421 flow [2024-11-07 11:24:32,119 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=421, PETRI_PLACES=83, PETRI_TRANSITIONS=68} [2024-11-07 11:24:32,120 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 40 predicate places. [2024-11-07 11:24:32,120 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 68 transitions, 421 flow [2024-11-07 11:24:32,120 INFO L472 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) [2024-11-07 11:24:32,120 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:24:32,121 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, 1] [2024-11-07 11:24:32,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-07 11:24:32,121 INFO L396 AbstractCegarLoop]: === Iteration 15 === 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 11:24:32,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:24:32,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1650530228, now seen corresponding path program 5 times [2024-11-07 11:24:32,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:24:32,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308650056] [2024-11-07 11:24:32,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:24:32,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:24:32,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:24:32,171 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 11:24:32,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:24:32,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308650056] [2024-11-07 11:24:32,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308650056] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:24:32,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:24:32,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 11:24:32,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407820804] [2024-11-07 11:24:32,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:24:32,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:24:32,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:24:32,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:24:32,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:24:32,173 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-07 11:24:32,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 68 transitions, 421 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) [2024-11-07 11:24:32,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:24:32,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-07 11:24:32,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:24:32,667 INFO L124 PetriNetUnfolderBase]: 4526/6259 cut-off events. [2024-11-07 11:24:32,667 INFO L125 PetriNetUnfolderBase]: For 8040/8040 co-relation queries the response was YES. [2024-11-07 11:24:32,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16345 conditions, 6259 events. 4526/6259 cut-off events. For 8040/8040 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 28018 event pairs, 2710 based on Foata normal form. 20/5281 useless extension candidates. Maximal degree in co-relation 16277. Up to 5489 conditions per place. [2024-11-07 11:24:32,701 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 84 selfloop transitions, 1 changer transitions 14/100 dead transitions. [2024-11-07 11:24:32,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 100 transitions, 693 flow [2024-11-07 11:24:32,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 11:24:32,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 11:24:32,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2024-11-07 11:24:32,702 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4744897959183674 [2024-11-07 11:24:32,702 INFO L175 Difference]: Start difference. First operand has 83 places, 68 transitions, 421 flow. Second operand 4 states and 93 transitions. [2024-11-07 11:24:32,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 100 transitions, 693 flow [2024-11-07 11:24:32,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 100 transitions, 665 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-11-07 11:24:32,720 INFO L231 Difference]: Finished difference. Result has 83 places, 66 transitions, 379 flow [2024-11-07 11:24:32,720 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=379, PETRI_PLACES=83, PETRI_TRANSITIONS=66} [2024-11-07 11:24:32,721 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 40 predicate places. [2024-11-07 11:24:32,721 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 66 transitions, 379 flow [2024-11-07 11:24:32,721 INFO L472 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) [2024-11-07 11:24:32,721 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:24:32,721 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, 1] [2024-11-07 11:24:32,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-07 11:24:32,721 INFO L396 AbstractCegarLoop]: === Iteration 16 === 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 11:24:32,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:24:32,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1814186152, now seen corresponding path program 4 times [2024-11-07 11:24:32,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:24:32,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640337693] [2024-11-07 11:24:32,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:24:32,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:24:32,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:24:32,811 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 11:24:32,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:24:32,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640337693] [2024-11-07 11:24:32,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640337693] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:24:32,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:24:32,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 11:24:32,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896138279] [2024-11-07 11:24:32,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:24:32,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:24:32,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:24:32,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:24:32,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:24:32,814 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-07 11:24:32,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 66 transitions, 379 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) [2024-11-07 11:24:32,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:24:32,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-07 11:24:32,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:24:33,187 INFO L124 PetriNetUnfolderBase]: 4155/5726 cut-off events. [2024-11-07 11:24:33,188 INFO L125 PetriNetUnfolderBase]: For 5951/5951 co-relation queries the response was YES. [2024-11-07 11:24:33,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14685 conditions, 5726 events. 4155/5726 cut-off events. For 5951/5951 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 24769 event pairs, 884 based on Foata normal form. 40/4842 useless extension candidates. Maximal degree in co-relation 14668. Up to 5120 conditions per place. [2024-11-07 11:24:33,220 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 72 selfloop transitions, 5 changer transitions 16/94 dead transitions. [2024-11-07 11:24:33,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 94 transitions, 611 flow [2024-11-07 11:24:33,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 11:24:33,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 11:24:33,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2024-11-07 11:24:33,221 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46938775510204084 [2024-11-07 11:24:33,221 INFO L175 Difference]: Start difference. First operand has 83 places, 66 transitions, 379 flow. Second operand 4 states and 92 transitions. [2024-11-07 11:24:33,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 94 transitions, 611 flow [2024-11-07 11:24:33,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 94 transitions, 610 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 11:24:33,235 INFO L231 Difference]: Finished difference. Result has 83 places, 63 transitions, 348 flow [2024-11-07 11:24:33,236 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=348, PETRI_PLACES=83, PETRI_TRANSITIONS=63} [2024-11-07 11:24:33,236 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 40 predicate places. [2024-11-07 11:24:33,236 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 63 transitions, 348 flow [2024-11-07 11:24:33,236 INFO L472 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) [2024-11-07 11:24:33,237 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:24:33,237 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, 1] [2024-11-07 11:24:33,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-07 11:24:33,237 INFO L396 AbstractCegarLoop]: === Iteration 17 === 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 11:24:33,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:24:33,237 INFO L85 PathProgramCache]: Analyzing trace with hash -70028716, now seen corresponding path program 5 times [2024-11-07 11:24:33,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:24:33,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353956271] [2024-11-07 11:24:33,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:24:33,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:24:33,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:24:33,302 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 11:24:33,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:24:33,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353956271] [2024-11-07 11:24:33,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353956271] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:24:33,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:24:33,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 11:24:33,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492273172] [2024-11-07 11:24:33,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:24:33,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:24:33,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:24:33,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:24:33,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:24:33,304 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-07 11:24:33,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 63 transitions, 348 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) [2024-11-07 11:24:33,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:24:33,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-07 11:24:33,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:24:33,655 INFO L124 PetriNetUnfolderBase]: 3657/5013 cut-off events. [2024-11-07 11:24:33,656 INFO L125 PetriNetUnfolderBase]: For 5007/5007 co-relation queries the response was YES. [2024-11-07 11:24:33,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12913 conditions, 5013 events. 3657/5013 cut-off events. For 5007/5007 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 20960 event pairs, 2319 based on Foata normal form. 20/4213 useless extension candidates. Maximal degree in co-relation 12895. Up to 4857 conditions per place. [2024-11-07 11:24:33,681 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 59 selfloop transitions, 0 changer transitions 15/75 dead transitions. [2024-11-07 11:24:33,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 75 transitions, 501 flow [2024-11-07 11:24:33,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 11:24:33,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 11:24:33,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2024-11-07 11:24:33,682 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37244897959183676 [2024-11-07 11:24:33,682 INFO L175 Difference]: Start difference. First operand has 83 places, 63 transitions, 348 flow. Second operand 4 states and 73 transitions. [2024-11-07 11:24:33,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 75 transitions, 501 flow [2024-11-07 11:24:33,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 75 transitions, 485 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-11-07 11:24:33,687 INFO L231 Difference]: Finished difference. Result has 74 places, 60 transitions, 292 flow [2024-11-07 11:24:33,687 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=292, PETRI_PLACES=74, PETRI_TRANSITIONS=60} [2024-11-07 11:24:33,687 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 31 predicate places. [2024-11-07 11:24:33,687 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 60 transitions, 292 flow [2024-11-07 11:24:33,687 INFO L472 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) [2024-11-07 11:24:33,687 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:24:33,687 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, 1, 1, 1] [2024-11-07 11:24:33,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-07 11:24:33,688 INFO L396 AbstractCegarLoop]: === Iteration 18 === 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 11:24:33,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:24:33,688 INFO L85 PathProgramCache]: Analyzing trace with hash 295309173, now seen corresponding path program 1 times [2024-11-07 11:24:33,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:24:33,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631385325] [2024-11-07 11:24:33,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:24:33,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:24:33,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:24:34,040 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 11:24:34,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:24:34,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631385325] [2024-11-07 11:24:34,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631385325] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:24:34,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:24:34,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-07 11:24:34,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375553011] [2024-11-07 11:24:34,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:24:34,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-07 11:24:34,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:24:34,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-07 11:24:34,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-07 11:24:34,041 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-07 11:24:34,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 60 transitions, 292 flow. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 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 11:24:34,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:24:34,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-07 11:24:34,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:24:34,997 INFO L124 PetriNetUnfolderBase]: 8965/12323 cut-off events. [2024-11-07 11:24:34,997 INFO L125 PetriNetUnfolderBase]: For 6511/6511 co-relation queries the response was YES. [2024-11-07 11:24:35,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31358 conditions, 12323 events. 8965/12323 cut-off events. For 6511/6511 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 60988 event pairs, 1972 based on Foata normal form. 1/10449 useless extension candidates. Maximal degree in co-relation 31344. Up to 3976 conditions per place. [2024-11-07 11:24:35,114 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 176 selfloop transitions, 16 changer transitions 1/194 dead transitions. [2024-11-07 11:24:35,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 194 transitions, 1254 flow [2024-11-07 11:24:35,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 11:24:35,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-07 11:24:35,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 188 transitions. [2024-11-07 11:24:35,115 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42630385487528344 [2024-11-07 11:24:35,115 INFO L175 Difference]: Start difference. First operand has 74 places, 60 transitions, 292 flow. Second operand 9 states and 188 transitions. [2024-11-07 11:24:35,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 194 transitions, 1254 flow [2024-11-07 11:24:35,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 194 transitions, 1236 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-07 11:24:35,134 INFO L231 Difference]: Finished difference. Result has 79 places, 73 transitions, 394 flow [2024-11-07 11:24:35,135 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=394, PETRI_PLACES=79, PETRI_TRANSITIONS=73} [2024-11-07 11:24:35,135 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 36 predicate places. [2024-11-07 11:24:35,135 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 73 transitions, 394 flow [2024-11-07 11:24:35,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 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 11:24:35,136 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:24:35,136 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, 1, 1, 1, 1] [2024-11-07 11:24:35,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-07 11:24:35,136 INFO L396 AbstractCegarLoop]: === Iteration 19 === 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 11:24:35,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:24:35,136 INFO L85 PathProgramCache]: Analyzing trace with hash 501131277, now seen corresponding path program 1 times [2024-11-07 11:24:35,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:24:35,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095911220] [2024-11-07 11:24:35,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:24:35,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:24:35,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:24:35,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:24:35,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:24:35,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095911220] [2024-11-07 11:24:35,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095911220] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:24:35,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92854403] [2024-11-07 11:24:35,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:24:35,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:24:35,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:24:35,289 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 11:24:35,290 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 11:24:35,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:24:35,394 INFO L255 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-07 11:24:35,398 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:24:35,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:24:35,996 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:24:37,887 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 11:24:37,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92854403] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-07 11:24:37,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-07 11:24:37,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7, 12] total 25 [2024-11-07 11:24:37,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109725578] [2024-11-07 11:24:37,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:24:37,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-07 11:24:37,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:24:37,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-07 11:24:37,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=486, Unknown=0, NotChecked=0, Total=600 [2024-11-07 11:24:37,889 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-07 11:24:37,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 73 transitions, 394 flow. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 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) [2024-11-07 11:24:37,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:24:37,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-07 11:24:37,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:24:41,125 INFO L124 PetriNetUnfolderBase]: 19969/27861 cut-off events. [2024-11-07 11:24:41,125 INFO L125 PetriNetUnfolderBase]: For 17263/17263 co-relation queries the response was YES. [2024-11-07 11:24:41,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77119 conditions, 27861 events. 19969/27861 cut-off events. For 17263/17263 co-relation queries the response was YES. Maximal size of possible extension queue 1040. Compared 161084 event pairs, 2126 based on Foata normal form. 1/25308 useless extension candidates. Maximal degree in co-relation 77101. Up to 7406 conditions per place. [2024-11-07 11:24:41,287 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 334 selfloop transitions, 83 changer transitions 9/427 dead transitions. [2024-11-07 11:24:41,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 427 transitions, 2839 flow [2024-11-07 11:24:41,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-07 11:24:41,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-07 11:24:41,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 339 transitions. [2024-11-07 11:24:41,289 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49416909620991256 [2024-11-07 11:24:41,289 INFO L175 Difference]: Start difference. First operand has 79 places, 73 transitions, 394 flow. Second operand 14 states and 339 transitions. [2024-11-07 11:24:41,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 427 transitions, 2839 flow [2024-11-07 11:24:41,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 427 transitions, 2829 flow, removed 5 selfloop flow, removed 0 redundant places. [2024-11-07 11:24:41,341 INFO L231 Difference]: Finished difference. Result has 102 places, 165 transitions, 1183 flow [2024-11-07 11:24:41,341 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1183, PETRI_PLACES=102, PETRI_TRANSITIONS=165} [2024-11-07 11:24:41,341 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 59 predicate places. [2024-11-07 11:24:41,341 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 165 transitions, 1183 flow [2024-11-07 11:24:41,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 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) [2024-11-07 11:24:41,341 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:24:41,341 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, 1, 1, 1, 1] [2024-11-07 11:24:41,353 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-07 11:24:41,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:24:41,543 INFO L396 AbstractCegarLoop]: === Iteration 20 === 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 11:24:41,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:24:41,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1818739996, now seen corresponding path program 1 times [2024-11-07 11:24:41,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:24:41,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224318721] [2024-11-07 11:24:41,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:24:41,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:24:41,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:24:41,616 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 11:24:41,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:24:41,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224318721] [2024-11-07 11:24:41,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224318721] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:24:41,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:24:41,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 11:24:41,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77049169] [2024-11-07 11:24:41,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:24:41,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 11:24:41,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:24:41,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 11:24:41,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-07 11:24:41,619 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-07 11:24:41,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 165 transitions, 1183 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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 11:24:41,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:24:41,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-07 11:24:41,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:24:44,003 INFO L124 PetriNetUnfolderBase]: 23229/32934 cut-off events. [2024-11-07 11:24:44,003 INFO L125 PetriNetUnfolderBase]: For 71407/71407 co-relation queries the response was YES. [2024-11-07 11:24:44,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117328 conditions, 32934 events. 23229/32934 cut-off events. For 71407/71407 co-relation queries the response was YES. Maximal size of possible extension queue 1255. Compared 200242 event pairs, 11344 based on Foata normal form. 0/30465 useless extension candidates. Maximal degree in co-relation 117299. Up to 13603 conditions per place. [2024-11-07 11:24:44,288 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 279 selfloop transitions, 26 changer transitions 6/312 dead transitions. [2024-11-07 11:24:44,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 312 transitions, 2792 flow [2024-11-07 11:24:44,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 11:24:44,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 11:24:44,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 127 transitions. [2024-11-07 11:24:44,289 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43197278911564624 [2024-11-07 11:24:44,289 INFO L175 Difference]: Start difference. First operand has 102 places, 165 transitions, 1183 flow. Second operand 6 states and 127 transitions. [2024-11-07 11:24:44,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 312 transitions, 2792 flow [2024-11-07 11:24:44,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 312 transitions, 2731 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-11-07 11:24:44,591 INFO L231 Difference]: Finished difference. Result has 106 places, 167 transitions, 1331 flow [2024-11-07 11:24:44,591 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1065, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1331, PETRI_PLACES=106, PETRI_TRANSITIONS=167} [2024-11-07 11:24:44,592 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 63 predicate places. [2024-11-07 11:24:44,592 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 167 transitions, 1331 flow [2024-11-07 11:24:44,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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 11:24:44,592 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:24:44,592 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, 1, 1, 1, 1] [2024-11-07 11:24:44,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-07 11:24:44,592 INFO L396 AbstractCegarLoop]: === Iteration 21 === 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 11:24:44,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:24:44,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1098878460, now seen corresponding path program 1 times [2024-11-07 11:24:44,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:24:44,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453566717] [2024-11-07 11:24:44,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:24:44,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:24:44,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:24:44,677 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 11:24:44,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:24:44,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453566717] [2024-11-07 11:24:44,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453566717] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:24:44,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:24:44,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 11:24:44,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806543981] [2024-11-07 11:24:44,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:24:44,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 11:24:44,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:24:44,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 11:24:44,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-07 11:24:44,679 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-07 11:24:44,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 167 transitions, 1331 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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 11:24:44,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:24:44,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-07 11:24:44,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:24:48,508 INFO L124 PetriNetUnfolderBase]: 33446/48223 cut-off events. [2024-11-07 11:24:48,508 INFO L125 PetriNetUnfolderBase]: For 133087/133087 co-relation queries the response was YES. [2024-11-07 11:24:48,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178336 conditions, 48223 events. 33446/48223 cut-off events. For 133087/133087 co-relation queries the response was YES. Maximal size of possible extension queue 1848. Compared 319928 event pairs, 18149 based on Foata normal form. 0/46157 useless extension candidates. Maximal degree in co-relation 178305. Up to 23711 conditions per place. [2024-11-07 11:24:48,941 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 288 selfloop transitions, 19 changer transitions 22/330 dead transitions. [2024-11-07 11:24:48,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 330 transitions, 3310 flow [2024-11-07 11:24:48,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 11:24:48,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 11:24:48,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 122 transitions. [2024-11-07 11:24:48,943 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41496598639455784 [2024-11-07 11:24:48,943 INFO L175 Difference]: Start difference. First operand has 106 places, 167 transitions, 1331 flow. Second operand 6 states and 122 transitions. [2024-11-07 11:24:48,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 330 transitions, 3310 flow [2024-11-07 11:24:49,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 330 transitions, 3297 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-07 11:24:49,440 INFO L231 Difference]: Finished difference. Result has 112 places, 155 transitions, 1307 flow [2024-11-07 11:24:49,440 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1196, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1307, PETRI_PLACES=112, PETRI_TRANSITIONS=155} [2024-11-07 11:24:49,441 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 69 predicate places. [2024-11-07 11:24:49,441 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 155 transitions, 1307 flow [2024-11-07 11:24:49,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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 11:24:49,441 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:24:49,441 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, 1, 1, 1, 1] [2024-11-07 11:24:49,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-07 11:24:49,441 INFO L396 AbstractCegarLoop]: === Iteration 22 === 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 11:24:49,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:24:49,442 INFO L85 PathProgramCache]: Analyzing trace with hash 59614561, now seen corresponding path program 2 times [2024-11-07 11:24:49,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:24:49,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111287914] [2024-11-07 11:24:49,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:24:49,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:24:49,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:24:49,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:24:49,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:24:49,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111287914] [2024-11-07 11:24:49,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111287914] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:24:49,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478889519] [2024-11-07 11:24:49,636 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:24:49,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:24:49,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:24:49,638 INFO L229 MonitoredProcess]: Starting monitored process 3 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 11:24:49,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-07 11:24:49,865 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-07 11:24:49,866 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:24:49,867 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-07 11:24:49,869 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:24:50,331 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 11:24:50,331 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 11:24:50,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478889519] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:24:50,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 11:24:50,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [7] total 17 [2024-11-07 11:24:50,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077717004] [2024-11-07 11:24:50,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:24:50,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-07 11:24:50,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:24:50,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-07 11:24:50,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2024-11-07 11:24:50,334 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-07 11:24:50,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 155 transitions, 1307 flow. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 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 11:24:50,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:24:50,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-07 11:24:50,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:24:54,898 INFO L124 PetriNetUnfolderBase]: 34630/49307 cut-off events. [2024-11-07 11:24:54,899 INFO L125 PetriNetUnfolderBase]: For 156184/156184 co-relation queries the response was YES. [2024-11-07 11:24:55,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190337 conditions, 49307 events. 34630/49307 cut-off events. For 156184/156184 co-relation queries the response was YES. Maximal size of possible extension queue 1867. Compared 322934 event pairs, 5023 based on Foata normal form. 1/47985 useless extension candidates. Maximal degree in co-relation 190303. Up to 24755 conditions per place. [2024-11-07 11:24:55,384 INFO L140 encePairwiseOnDemand]: 33/49 looper letters, 323 selfloop transitions, 121 changer transitions 5/450 dead transitions. [2024-11-07 11:24:55,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 450 transitions, 4340 flow [2024-11-07 11:24:55,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-07 11:24:55,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-07 11:24:55,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 281 transitions. [2024-11-07 11:24:55,385 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4096209912536443 [2024-11-07 11:24:55,386 INFO L175 Difference]: Start difference. First operand has 112 places, 155 transitions, 1307 flow. Second operand 14 states and 281 transitions. [2024-11-07 11:24:55,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 450 transitions, 4340 flow [2024-11-07 11:24:56,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 450 transitions, 4210 flow, removed 44 selfloop flow, removed 4 redundant places. [2024-11-07 11:24:56,895 INFO L231 Difference]: Finished difference. Result has 127 places, 226 transitions, 2256 flow [2024-11-07 11:24:56,896 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1248, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2256, PETRI_PLACES=127, PETRI_TRANSITIONS=226} [2024-11-07 11:24:56,896 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 84 predicate places. [2024-11-07 11:24:56,896 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 226 transitions, 2256 flow [2024-11-07 11:24:56,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 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 11:24:56,896 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:24:56,896 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, 1, 1, 1, 1] [2024-11-07 11:24:56,910 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-07 11:24:57,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:24:57,097 INFO L396 AbstractCegarLoop]: === Iteration 23 === 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 11:24:57,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:24:57,098 INFO L85 PathProgramCache]: Analyzing trace with hash -500687249, now seen corresponding path program 3 times [2024-11-07 11:24:57,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:24:57,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026287975] [2024-11-07 11:24:57,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:24:57,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:24:57,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:24:57,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:24:57,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:24:57,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026287975] [2024-11-07 11:24:57,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026287975] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:24:57,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108120645] [2024-11-07 11:24:57,265 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 11:24:57,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:24:57,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:24:57,267 INFO L229 MonitoredProcess]: Starting monitored process 4 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 11:24:57,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-07 11:24:57,371 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-07 11:24:57,371 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:24:57,373 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-07 11:24:57,376 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:24:57,841 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 11:24:57,841 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 11:24:57,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108120645] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:24:57,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 11:24:57,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [7] total 17 [2024-11-07 11:24:57,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915371816] [2024-11-07 11:24:57,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:24:57,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-07 11:24:57,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:24:57,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-07 11:24:57,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-11-07 11:24:57,843 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-07 11:24:57,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 226 transitions, 2256 flow. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 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 11:24:57,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:24:57,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-07 11:24:57,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:25:02,834 INFO L124 PetriNetUnfolderBase]: 35856/51014 cut-off events. [2024-11-07 11:25:02,835 INFO L125 PetriNetUnfolderBase]: For 183961/183961 co-relation queries the response was YES. [2024-11-07 11:25:03,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210368 conditions, 51014 events. 35856/51014 cut-off events. For 183961/183961 co-relation queries the response was YES. Maximal size of possible extension queue 1952. Compared 335434 event pairs, 4858 based on Foata normal form. 1/49639 useless extension candidates. Maximal degree in co-relation 210329. Up to 25148 conditions per place. [2024-11-07 11:25:03,378 INFO L140 encePairwiseOnDemand]: 33/49 looper letters, 338 selfloop transitions, 156 changer transitions 14/509 dead transitions. [2024-11-07 11:25:03,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 509 transitions, 5388 flow [2024-11-07 11:25:03,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-07 11:25:03,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-07 11:25:03,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 327 transitions. [2024-11-07 11:25:03,380 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39255702280912363 [2024-11-07 11:25:03,380 INFO L175 Difference]: Start difference. First operand has 127 places, 226 transitions, 2256 flow. Second operand 17 states and 327 transitions. [2024-11-07 11:25:03,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 509 transitions, 5388 flow [2024-11-07 11:25:05,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 509 transitions, 5292 flow, removed 27 selfloop flow, removed 3 redundant places. [2024-11-07 11:25:05,022 INFO L231 Difference]: Finished difference. Result has 147 places, 270 transitions, 3087 flow [2024-11-07 11:25:05,022 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2181, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3087, PETRI_PLACES=147, PETRI_TRANSITIONS=270} [2024-11-07 11:25:05,023 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 104 predicate places. [2024-11-07 11:25:05,023 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 270 transitions, 3087 flow [2024-11-07 11:25:05,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 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 11:25:05,023 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:25:05,023 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, 1, 1, 1, 1] [2024-11-07 11:25:05,039 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-07 11:25:05,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:25:05,224 INFO L396 AbstractCegarLoop]: === Iteration 24 === 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 11:25:05,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:25:05,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1742562783, now seen corresponding path program 4 times [2024-11-07 11:25:05,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:25:05,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616671965] [2024-11-07 11:25:05,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:25:05,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:25:05,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:25:05,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:25:05,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:25:05,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616671965] [2024-11-07 11:25:05,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616671965] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:25:05,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400005497] [2024-11-07 11:25:05,395 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-07 11:25:05,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:25:05,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:25:05,397 INFO L229 MonitoredProcess]: Starting monitored process 5 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 11:25:05,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-07 11:25:05,502 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-07 11:25:05,502 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:25:05,503 INFO L255 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-07 11:25:05,505 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:25:05,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:25:05,892 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:25:06,510 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 11:25:06,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400005497] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-07 11:25:06,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-07 11:25:06,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 11] total 25 [2024-11-07 11:25:06,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554767197] [2024-11-07 11:25:06,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:25:06,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-07 11:25:06,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:25:06,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-07 11:25:06,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=482, Unknown=0, NotChecked=0, Total=600 [2024-11-07 11:25:06,511 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-07 11:25:06,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 270 transitions, 3087 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 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 11:25:06,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:25:06,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-07 11:25:06,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:25:12,193 INFO L124 PetriNetUnfolderBase]: 37265/52964 cut-off events. [2024-11-07 11:25:12,193 INFO L125 PetriNetUnfolderBase]: For 227781/227781 co-relation queries the response was YES. [2024-11-07 11:25:12,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228506 conditions, 52964 events. 37265/52964 cut-off events. For 227781/227781 co-relation queries the response was YES. Maximal size of possible extension queue 2008. Compared 348682 event pairs, 3699 based on Foata normal form. 4/51592 useless extension candidates. Maximal degree in co-relation 228459. Up to 12134 conditions per place. [2024-11-07 11:25:12,851 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 485 selfloop transitions, 173 changer transitions 12/671 dead transitions. [2024-11-07 11:25:12,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 671 transitions, 7996 flow [2024-11-07 11:25:12,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-07 11:25:12,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-07 11:25:12,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 344 transitions. [2024-11-07 11:25:12,853 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46802721088435373 [2024-11-07 11:25:12,853 INFO L175 Difference]: Start difference. First operand has 147 places, 270 transitions, 3087 flow. Second operand 15 states and 344 transitions. [2024-11-07 11:25:12,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 671 transitions, 7996 flow [2024-11-07 11:25:15,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 671 transitions, 7637 flow, removed 43 selfloop flow, removed 6 redundant places. [2024-11-07 11:25:15,239 INFO L231 Difference]: Finished difference. Result has 160 places, 315 transitions, 3830 flow [2024-11-07 11:25:15,240 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2852, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3830, PETRI_PLACES=160, PETRI_TRANSITIONS=315} [2024-11-07 11:25:15,240 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 117 predicate places. [2024-11-07 11:25:15,240 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 315 transitions, 3830 flow [2024-11-07 11:25:15,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 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 11:25:15,240 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:25:15,240 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, 1, 1, 1, 1] [2024-11-07 11:25:15,252 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-07 11:25:15,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-07 11:25:15,441 INFO L396 AbstractCegarLoop]: === Iteration 25 === 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 11:25:15,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:25:15,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1363015643, now seen corresponding path program 5 times [2024-11-07 11:25:15,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:25:15,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694257398] [2024-11-07 11:25:15,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:25:15,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:25:15,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:25:15,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:25:15,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:25:15,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694257398] [2024-11-07 11:25:15,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694257398] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:25:15,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144949506] [2024-11-07 11:25:15,611 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-07 11:25:15,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:25:15,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:25:15,614 INFO L229 MonitoredProcess]: Starting monitored process 6 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 11:25:15,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-07 11:25:15,717 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:25:15,718 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:25:15,724 INFO L255 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-07 11:25:15,729 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:25:16,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:25:16,183 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:25:16,845 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 11:25:16,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144949506] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-07 11:25:16,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-07 11:25:16,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7, 12] total 25 [2024-11-07 11:25:16,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002987563] [2024-11-07 11:25:16,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:25:16,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-07 11:25:16,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:25:16,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-07 11:25:16,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2024-11-07 11:25:16,847 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-07 11:25:16,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 315 transitions, 3830 flow. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 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) [2024-11-07 11:25:16,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:25:16,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-07 11:25:16,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:25:23,217 INFO L124 PetriNetUnfolderBase]: 38256/54649 cut-off events. [2024-11-07 11:25:23,217 INFO L125 PetriNetUnfolderBase]: For 268676/268676 co-relation queries the response was YES. [2024-11-07 11:25:23,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244346 conditions, 54649 events. 38256/54649 cut-off events. For 268676/268676 co-relation queries the response was YES. Maximal size of possible extension queue 2079. Compared 364972 event pairs, 3815 based on Foata normal form. 4/53277 useless extension candidates. Maximal degree in co-relation 244294. Up to 12134 conditions per place. [2024-11-07 11:25:24,013 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 493 selfloop transitions, 180 changer transitions 13/687 dead transitions. [2024-11-07 11:25:24,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 687 transitions, 8383 flow [2024-11-07 11:25:24,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-07 11:25:24,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-07 11:25:24,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 347 transitions. [2024-11-07 11:25:24,015 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47210884353741495 [2024-11-07 11:25:24,015 INFO L175 Difference]: Start difference. First operand has 160 places, 315 transitions, 3830 flow. Second operand 15 states and 347 transitions. [2024-11-07 11:25:24,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 687 transitions, 8383 flow