./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-min-max-inc.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_500c6a84-96bd-4597-abb8-6e7312bb5511/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_500c6a84-96bd-4597-abb8-6e7312bb5511/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_500c6a84-96bd-4597-abb8-6e7312bb5511/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_500c6a84-96bd-4597-abb8-6e7312bb5511/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-min-max-inc.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_500c6a84-96bd-4597-abb8-6e7312bb5511/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_500c6a84-96bd-4597-abb8-6e7312bb5511/bin/uautomizer-verify-aQ6SnzHsRB --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 341ac5a9697f243416924cef7ae19a5e9bc693a5982154ab196fb2faacf237d5 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:48:26,434 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:48:26,516 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_500c6a84-96bd-4597-abb8-6e7312bb5511/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:48:26,527 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:48:26,527 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:48:26,570 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:48:26,571 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:48:26,572 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:48:26,572 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:48:26,572 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:48:26,573 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:48:26,573 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:48:26,574 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:48:26,574 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:48:26,575 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:48:26,575 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:48:26,575 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:48:26,575 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:48:26,575 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:48:26,575 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:48:26,576 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:48:26,576 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:48:26,576 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:48:26,576 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:48:26,576 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:48:26,576 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:48:26,576 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:48:26,576 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:48:26,576 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:48:26,576 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:48:26,577 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:48:26,577 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:48:26,577 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:48:26,577 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:48:26,577 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:48:26,577 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:48:26,577 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:48:26,578 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:48:26,578 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:48:26,578 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:48:26,578 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:48:26,578 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:48:26,578 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:48:26,578 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:48:26,579 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:48:26,579 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:48:26,579 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:48:26,579 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:48:26,579 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 -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_500c6a84-96bd-4597-abb8-6e7312bb5511/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 341ac5a9697f243416924cef7ae19a5e9bc693a5982154ab196fb2faacf237d5 [2024-11-28 02:48:26,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:48:26,943 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:48:26,947 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:48:26,949 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:48:26,949 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:48:26,950 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_500c6a84-96bd-4597-abb8-6e7312bb5511/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/popl20-min-max-inc.wvr.c [2024-11-28 02:48:30,005 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_500c6a84-96bd-4597-abb8-6e7312bb5511/bin/uautomizer-verify-aQ6SnzHsRB/data/4cfdb4ba5/3fc5134c95b0474ebaa32c01f1f4ac19/FLAG16a55950f [2024-11-28 02:48:30,323 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:48:30,323 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_500c6a84-96bd-4597-abb8-6e7312bb5511/sv-benchmarks/c/weaver/popl20-min-max-inc.wvr.c [2024-11-28 02:48:30,364 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_500c6a84-96bd-4597-abb8-6e7312bb5511/bin/uautomizer-verify-aQ6SnzHsRB/data/4cfdb4ba5/3fc5134c95b0474ebaa32c01f1f4ac19/FLAG16a55950f [2024-11-28 02:48:30,405 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_500c6a84-96bd-4597-abb8-6e7312bb5511/bin/uautomizer-verify-aQ6SnzHsRB/data/4cfdb4ba5/3fc5134c95b0474ebaa32c01f1f4ac19 [2024-11-28 02:48:30,408 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:48:30,411 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:48:30,413 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:48:30,414 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:48:30,420 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:48:30,421 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:48:30" (1/1) ... [2024-11-28 02:48:30,421 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18588e30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:30, skipping insertion in model container [2024-11-28 02:48:30,422 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:48:30" (1/1) ... [2024-11-28 02:48:30,444 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:48:30,671 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_500c6a84-96bd-4597-abb8-6e7312bb5511/sv-benchmarks/c/weaver/popl20-min-max-inc.wvr.c[2682,2695] [2024-11-28 02:48:30,686 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:48:30,699 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:48:30,739 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_500c6a84-96bd-4597-abb8-6e7312bb5511/sv-benchmarks/c/weaver/popl20-min-max-inc.wvr.c[2682,2695] [2024-11-28 02:48:30,744 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:48:30,766 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:48:30,766 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:30 WrapperNode [2024-11-28 02:48:30,767 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:48:30,769 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:48:30,769 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:48:30,769 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:48:30,780 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:30" (1/1) ... [2024-11-28 02:48:30,791 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:30" (1/1) ... [2024-11-28 02:48:30,819 INFO L138 Inliner]: procedures = 23, calls = 25, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 116 [2024-11-28 02:48:30,820 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:48:30,820 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:48:30,821 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:48:30,821 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:48:30,830 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:30" (1/1) ... [2024-11-28 02:48:30,830 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:30" (1/1) ... [2024-11-28 02:48:30,833 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:30" (1/1) ... [2024-11-28 02:48:30,849 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-28 02:48:30,849 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:30" (1/1) ... [2024-11-28 02:48:30,849 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:30" (1/1) ... [2024-11-28 02:48:30,863 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:30" (1/1) ... [2024-11-28 02:48:30,864 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:30" (1/1) ... [2024-11-28 02:48:30,875 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:30" (1/1) ... [2024-11-28 02:48:30,877 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:30" (1/1) ... [2024-11-28 02:48:30,881 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:30" (1/1) ... [2024-11-28 02:48:30,883 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:48:30,884 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:48:30,884 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:48:30,884 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:48:30,889 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:30" (1/1) ... [2024-11-28 02:48:30,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:48:30,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_500c6a84-96bd-4597-abb8-6e7312bb5511/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:48:30,940 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_500c6a84-96bd-4597-abb8-6e7312bb5511/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:48:30,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_500c6a84-96bd-4597-abb8-6e7312bb5511/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:48:30,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:48:30,976 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-28 02:48:30,976 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-28 02:48:30,976 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-28 02:48:30,976 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-28 02:48:30,976 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-28 02:48:30,977 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-28 02:48:30,977 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-28 02:48:30,977 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-28 02:48:30,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:48:30,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 02:48:30,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 02:48:30,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 02:48:30,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 02:48:30,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:48:30,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:48:30,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 02:48:30,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 02:48:30,980 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 02:48:31,121 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:48:31,123 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:48:31,519 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 02:48:31,519 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:48:31,728 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:48:31,729 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-28 02:48:31,729 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:48:31 BoogieIcfgContainer [2024-11-28 02:48:31,729 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:48:31,731 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:48:31,731 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:48:31,736 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:48:31,736 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:48:30" (1/3) ... [2024-11-28 02:48:31,737 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72ced43f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:48:31, skipping insertion in model container [2024-11-28 02:48:31,737 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:30" (2/3) ... [2024-11-28 02:48:31,737 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72ced43f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:48:31, skipping insertion in model container [2024-11-28 02:48:31,737 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:48:31" (3/3) ... [2024-11-28 02:48:31,738 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-min-max-inc.wvr.c [2024-11-28 02:48:31,754 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:48:31,755 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-min-max-inc.wvr.c that has 5 procedures, 57 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2024-11-28 02:48:31,755 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 02:48:31,846 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-28 02:48:31,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 62 transitions, 152 flow [2024-11-28 02:48:31,933 INFO L124 PetriNetUnfolderBase]: 6/58 cut-off events. [2024-11-28 02:48:31,936 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-28 02:48:31,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 58 events. 6/58 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 127 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2024-11-28 02:48:31,940 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 62 transitions, 152 flow [2024-11-28 02:48:31,944 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 57 transitions, 138 flow [2024-11-28 02:48:31,951 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:48:31,963 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;@4344282f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:48:31,965 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-28 02:48:31,999 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:48:32,000 INFO L124 PetriNetUnfolderBase]: 6/56 cut-off events. [2024-11-28 02:48:32,000 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-28 02:48:32,000 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:48:32,001 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:48:32,001 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 2 more)] === [2024-11-28 02:48:32,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:32,007 INFO L85 PathProgramCache]: Analyzing trace with hash -318618966, now seen corresponding path program 1 times [2024-11-28 02:48:32,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:32,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896665590] [2024-11-28 02:48:32,016 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:32,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:32,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:32,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:48:32,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:32,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896665590] [2024-11-28 02:48:32,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896665590] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:32,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:48:32,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:48:32,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096966518] [2024-11-28 02:48:32,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:32,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:48:32,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:32,510 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:48:32,511 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:48:32,538 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 62 [2024-11-28 02:48:32,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 57 transitions, 138 flow. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 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) [2024-11-28 02:48:32,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:48:32,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 62 [2024-11-28 02:48:32,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:48:35,105 INFO L124 PetriNetUnfolderBase]: 11334/16648 cut-off events. [2024-11-28 02:48:35,106 INFO L125 PetriNetUnfolderBase]: For 884/884 co-relation queries the response was YES. [2024-11-28 02:48:35,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31544 conditions, 16648 events. 11334/16648 cut-off events. For 884/884 co-relation queries the response was YES. Maximal size of possible extension queue 860. Compared 112571 event pairs, 5075 based on Foata normal form. 309/16215 useless extension candidates. Maximal degree in co-relation 29703. Up to 8424 conditions per place. [2024-11-28 02:48:35,271 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 54 selfloop transitions, 3 changer transitions 0/78 dead transitions. [2024-11-28 02:48:35,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 78 transitions, 303 flow [2024-11-28 02:48:35,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:48:35,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:48:35,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 158 transitions. [2024-11-28 02:48:35,292 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6370967741935484 [2024-11-28 02:48:35,293 INFO L175 Difference]: Start difference. First operand has 64 places, 57 transitions, 138 flow. Second operand 4 states and 158 transitions. [2024-11-28 02:48:35,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 78 transitions, 303 flow [2024-11-28 02:48:35,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 78 transitions, 281 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-28 02:48:35,334 INFO L231 Difference]: Finished difference. Result has 60 places, 58 transitions, 136 flow [2024-11-28 02:48:35,337 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=60, PETRI_TRANSITIONS=58} [2024-11-28 02:48:35,341 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, -4 predicate places. [2024-11-28 02:48:35,343 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 58 transitions, 136 flow [2024-11-28 02:48:35,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 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) [2024-11-28 02:48:35,344 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:48:35,344 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:48:35,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:48:35,346 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 2 more)] === [2024-11-28 02:48:35,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:35,347 INFO L85 PathProgramCache]: Analyzing trace with hash 764484494, now seen corresponding path program 1 times [2024-11-28 02:48:35,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:35,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122796787] [2024-11-28 02:48:35,348 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:35,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:35,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:35,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:48:35,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:35,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122796787] [2024-11-28 02:48:35,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122796787] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:35,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:48:35,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:48:35,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628547833] [2024-11-28 02:48:35,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:35,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:48:35,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:35,653 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:48:35,654 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:48:35,671 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-11-28 02:48:35,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 58 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 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) [2024-11-28 02:48:35,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:48:35,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-11-28 02:48:35,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:48:38,189 INFO L124 PetriNetUnfolderBase]: 16337/24718 cut-off events. [2024-11-28 02:48:38,190 INFO L125 PetriNetUnfolderBase]: For 2302/2302 co-relation queries the response was YES. [2024-11-28 02:48:38,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47276 conditions, 24718 events. 16337/24718 cut-off events. For 2302/2302 co-relation queries the response was YES. Maximal size of possible extension queue 1025. Compared 176537 event pairs, 8357 based on Foata normal form. 494/23751 useless extension candidates. Maximal degree in co-relation 4458. Up to 13377 conditions per place. [2024-11-28 02:48:38,381 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 59 selfloop transitions, 3 changer transitions 0/82 dead transitions. [2024-11-28 02:48:38,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 82 transitions, 321 flow [2024-11-28 02:48:38,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:48:38,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:48:38,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 157 transitions. [2024-11-28 02:48:38,384 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6330645161290323 [2024-11-28 02:48:38,385 INFO L175 Difference]: Start difference. First operand has 60 places, 58 transitions, 136 flow. Second operand 4 states and 157 transitions. [2024-11-28 02:48:38,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 82 transitions, 321 flow [2024-11-28 02:48:38,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 82 transitions, 315 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:48:38,395 INFO L231 Difference]: Finished difference. Result has 62 places, 59 transitions, 146 flow [2024-11-28 02:48:38,395 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=146, PETRI_PLACES=62, PETRI_TRANSITIONS=59} [2024-11-28 02:48:38,396 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, -2 predicate places. [2024-11-28 02:48:38,397 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 59 transitions, 146 flow [2024-11-28 02:48:38,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 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) [2024-11-28 02:48:38,398 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:48:38,398 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:48:38,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:48:38,398 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 2 more)] === [2024-11-28 02:48:38,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:38,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1523298140, now seen corresponding path program 1 times [2024-11-28 02:48:38,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:38,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225375951] [2024-11-28 02:48:38,401 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:38,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:38,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:38,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:48:38,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:38,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225375951] [2024-11-28 02:48:38,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225375951] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:38,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:48:38,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:48:38,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374435147] [2024-11-28 02:48:38,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:38,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:48:38,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:38,589 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:48:38,590 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:48:38,607 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-11-28 02:48:38,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 59 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 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) [2024-11-28 02:48:38,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:48:38,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-11-28 02:48:38,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:48:41,097 INFO L124 PetriNetUnfolderBase]: 20760/31551 cut-off events. [2024-11-28 02:48:41,098 INFO L125 PetriNetUnfolderBase]: For 4069/4803 co-relation queries the response was YES. [2024-11-28 02:48:41,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63050 conditions, 31551 events. 20760/31551 cut-off events. For 4069/4803 co-relation queries the response was YES. Maximal size of possible extension queue 986. Compared 226248 event pairs, 11156 based on Foata normal form. 1420/31182 useless extension candidates. Maximal degree in co-relation 20255. Up to 16911 conditions per place. [2024-11-28 02:48:41,282 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 60 selfloop transitions, 3 changer transitions 0/83 dead transitions. [2024-11-28 02:48:41,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 83 transitions, 338 flow [2024-11-28 02:48:41,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:48:41,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:48:41,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 156 transitions. [2024-11-28 02:48:41,287 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6290322580645161 [2024-11-28 02:48:41,287 INFO L175 Difference]: Start difference. First operand has 62 places, 59 transitions, 146 flow. Second operand 4 states and 156 transitions. [2024-11-28 02:48:41,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 83 transitions, 338 flow [2024-11-28 02:48:41,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 83 transitions, 333 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:48:41,293 INFO L231 Difference]: Finished difference. Result has 64 places, 60 transitions, 156 flow [2024-11-28 02:48:41,293 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=64, PETRI_TRANSITIONS=60} [2024-11-28 02:48:41,295 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 0 predicate places. [2024-11-28 02:48:41,295 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 60 transitions, 156 flow [2024-11-28 02:48:41,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 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) [2024-11-28 02:48:41,296 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:48:41,296 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:48:41,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:48:41,296 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 2 more)] === [2024-11-28 02:48:41,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:41,297 INFO L85 PathProgramCache]: Analyzing trace with hash 377586936, now seen corresponding path program 1 times [2024-11-28 02:48:41,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:41,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760448625] [2024-11-28 02:48:41,297 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:41,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:41,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:41,508 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:48:41,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:41,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760448625] [2024-11-28 02:48:41,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760448625] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:41,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:48:41,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:48:41,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261992] [2024-11-28 02:48:41,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:41,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:48:41,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:41,510 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:48:41,510 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:48:41,510 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 62 [2024-11-28 02:48:41,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 60 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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) [2024-11-28 02:48:41,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:48:41,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 62 [2024-11-28 02:48:41,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:48:43,363 INFO L124 PetriNetUnfolderBase]: 18370/27689 cut-off events. [2024-11-28 02:48:43,363 INFO L125 PetriNetUnfolderBase]: For 5103/6413 co-relation queries the response was YES. [2024-11-28 02:48:43,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57796 conditions, 27689 events. 18370/27689 cut-off events. For 5103/6413 co-relation queries the response was YES. Maximal size of possible extension queue 950. Compared 196020 event pairs, 15082 based on Foata normal form. 1310/27483 useless extension candidates. Maximal degree in co-relation 19096. Up to 22509 conditions per place. [2024-11-28 02:48:43,526 INFO L140 encePairwiseOnDemand]: 59/62 looper letters, 37 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2024-11-28 02:48:43,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 61 transitions, 236 flow [2024-11-28 02:48:43,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:48:43,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:48:43,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2024-11-28 02:48:43,528 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6182795698924731 [2024-11-28 02:48:43,528 INFO L175 Difference]: Start difference. First operand has 64 places, 60 transitions, 156 flow. Second operand 3 states and 115 transitions. [2024-11-28 02:48:43,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 61 transitions, 236 flow [2024-11-28 02:48:43,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 61 transitions, 232 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:48:43,534 INFO L231 Difference]: Finished difference. Result has 65 places, 61 transitions, 164 flow [2024-11-28 02:48:43,535 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=65, PETRI_TRANSITIONS=61} [2024-11-28 02:48:43,535 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 1 predicate places. [2024-11-28 02:48:43,535 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 61 transitions, 164 flow [2024-11-28 02:48:43,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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) [2024-11-28 02:48:43,536 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:48:43,536 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:48:43,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:48:43,536 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 2 more)] === [2024-11-28 02:48:43,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:43,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1493278530, now seen corresponding path program 1 times [2024-11-28 02:48:43,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:43,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169235782] [2024-11-28 02:48:43,538 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:43,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:43,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:44,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:48:44,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:44,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169235782] [2024-11-28 02:48:44,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169235782] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:44,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:48:44,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 02:48:44,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151407940] [2024-11-28 02:48:44,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:44,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:48:44,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:44,107 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:48:44,107 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:48:44,210 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 62 [2024-11-28 02:48:44,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 61 transitions, 164 flow. Second operand has 8 states, 8 states have (on average 24.0) internal successors, (192), 8 states have internal predecessors, (192), 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) [2024-11-28 02:48:44,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:48:44,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 62 [2024-11-28 02:48:44,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:49:06,124 INFO L124 PetriNetUnfolderBase]: 211500/305360 cut-off events. [2024-11-28 02:49:06,124 INFO L125 PetriNetUnfolderBase]: For 55572/62879 co-relation queries the response was YES. [2024-11-28 02:49:06,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 651259 conditions, 305360 events. 211500/305360 cut-off events. For 55572/62879 co-relation queries the response was YES. Maximal size of possible extension queue 8010. Compared 2529258 event pairs, 12155 based on Foata normal form. 7315/302519 useless extension candidates. Maximal degree in co-relation 651242. Up to 59522 conditions per place. [2024-11-28 02:49:07,103 INFO L140 encePairwiseOnDemand]: 49/62 looper letters, 470 selfloop transitions, 81 changer transitions 473/1039 dead transitions. [2024-11-28 02:49:07,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 1039 transitions, 4944 flow [2024-11-28 02:49:07,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-28 02:49:07,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2024-11-28 02:49:07,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 1859 transitions. [2024-11-28 02:49:07,109 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6119157340355497 [2024-11-28 02:49:07,109 INFO L175 Difference]: Start difference. First operand has 65 places, 61 transitions, 164 flow. Second operand 49 states and 1859 transitions. [2024-11-28 02:49:07,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 1039 transitions, 4944 flow [2024-11-28 02:49:08,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 1039 transitions, 4940 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-28 02:49:08,490 INFO L231 Difference]: Finished difference. Result has 152 places, 148 transitions, 782 flow [2024-11-28 02:49:08,490 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=782, PETRI_PLACES=152, PETRI_TRANSITIONS=148} [2024-11-28 02:49:08,491 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 88 predicate places. [2024-11-28 02:49:08,491 INFO L471 AbstractCegarLoop]: Abstraction has has 152 places, 148 transitions, 782 flow [2024-11-28 02:49:08,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.0) internal successors, (192), 8 states have internal predecessors, (192), 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) [2024-11-28 02:49:08,491 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:49:08,492 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:49:08,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:49:08,492 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 2 more)] === [2024-11-28 02:49:08,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:49:08,497 INFO L85 PathProgramCache]: Analyzing trace with hash 2138280188, now seen corresponding path program 2 times [2024-11-28 02:49:08,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:49:08,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955094511] [2024-11-28 02:49:08,497 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:49:08,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:49:08,543 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 02:49:08,543 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:49:08,916 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:49:08,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:49:08,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955094511] [2024-11-28 02:49:08,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955094511] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:49:08,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:49:08,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 02:49:08,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231377968] [2024-11-28 02:49:08,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:49:08,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:49:08,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:49:08,920 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:49:08,920 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:49:08,991 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 62 [2024-11-28 02:49:08,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 148 transitions, 782 flow. Second operand has 8 states, 8 states have (on average 24.0) internal successors, (192), 8 states have internal predecessors, (192), 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) [2024-11-28 02:49:08,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:49:08,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 62 [2024-11-28 02:49:08,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand