./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b1e99af7c76570461a4b0ac70d664412f250ec04f47fd9ca8c0f85236f1348c6 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 09:47:50,705 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 09:47:50,771 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-19 09:47:50,775 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 09:47:50,778 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 09:47:50,806 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 09:47:50,806 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 09:47:50,807 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 09:47:50,807 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 09:47:50,810 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 09:47:50,810 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 09:47:50,810 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 09:47:50,810 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 09:47:50,811 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 09:47:50,811 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 09:47:50,811 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 09:47:50,811 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 09:47:50,811 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 09:47:50,812 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 09:47:50,812 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 09:47:50,813 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-19 09:47:50,813 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-19 09:47:50,813 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-19 09:47:50,813 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 09:47:50,813 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-19 09:47:50,814 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 09:47:50,814 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 09:47:50,815 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 09:47:50,815 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 09:47:50,815 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 09:47:50,815 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 09:47:50,815 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 09:47:50,815 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 09:47:50,816 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:47:50,816 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 09:47:50,816 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 09:47:50,817 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 09:47:50,817 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 09:47:50,817 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 09:47:50,817 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 09:47:50,817 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 09:47:50,818 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 09:47:50,818 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1e99af7c76570461a4b0ac70d664412f250ec04f47fd9ca8c0f85236f1348c6 [2024-11-19 09:47:51,001 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 09:47:51,018 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 09:47:51,019 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 09:47:51,020 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 09:47:51,020 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 09:47:51,021 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c [2024-11-19 09:47:52,196 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 09:47:52,378 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 09:47:52,378 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c [2024-11-19 09:47:52,385 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94a5c2ddc/f08b81f1feca48699a0d67dbdb60782d/FLAG2d75cebe3 [2024-11-19 09:47:52,772 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94a5c2ddc/f08b81f1feca48699a0d67dbdb60782d [2024-11-19 09:47:52,774 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 09:47:52,775 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 09:47:52,776 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 09:47:52,776 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 09:47:52,784 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 09:47:52,784 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:47:52" (1/1) ... [2024-11-19 09:47:52,786 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bce871e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:52, skipping insertion in model container [2024-11-19 09:47:52,786 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:47:52" (1/1) ... [2024-11-19 09:47:52,806 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 09:47:52,969 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-19 09:47:52,972 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:47:52,978 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 09:47:53,002 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:47:53,015 INFO L204 MainTranslator]: Completed translation [2024-11-19 09:47:53,016 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:53 WrapperNode [2024-11-19 09:47:53,016 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 09:47:53,017 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 09:47:53,017 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 09:47:53,017 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 09:47:53,022 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:53" (1/1) ... [2024-11-19 09:47:53,028 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:53" (1/1) ... [2024-11-19 09:47:53,058 INFO L138 Inliner]: procedures = 26, calls = 49, calls flagged for inlining = 19, calls inlined = 25, statements flattened = 297 [2024-11-19 09:47:53,058 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 09:47:53,059 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 09:47:53,059 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 09:47:53,059 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 09:47:53,068 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:53" (1/1) ... [2024-11-19 09:47:53,068 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:53" (1/1) ... [2024-11-19 09:47:53,079 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:53" (1/1) ... [2024-11-19 09:47:53,099 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-19 09:47:53,099 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:53" (1/1) ... [2024-11-19 09:47:53,099 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:53" (1/1) ... [2024-11-19 09:47:53,115 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:53" (1/1) ... [2024-11-19 09:47:53,122 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:53" (1/1) ... [2024-11-19 09:47:53,126 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:53" (1/1) ... [2024-11-19 09:47:53,128 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:53" (1/1) ... [2024-11-19 09:47:53,130 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 09:47:53,131 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 09:47:53,131 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 09:47:53,131 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 09:47:53,132 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:53" (1/1) ... [2024-11-19 09:47:53,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:47:53,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:47:53,159 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 09:47:53,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 09:47:53,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 09:47:53,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 09:47:53,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 09:47:53,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 09:47:53,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 09:47:53,195 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 09:47:53,195 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 09:47:53,195 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 09:47:53,195 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 09:47:53,195 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-19 09:47:53,195 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-19 09:47:53,195 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-19 09:47:53,195 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-19 09:47:53,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 09:47:53,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 09:47:53,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-19 09:47:53,196 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-19 09:47:53,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 09:47:53,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 09:47:53,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 09:47:53,197 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 09:47:53,295 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 09:47:53,297 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 09:47:53,630 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 09:47:53,630 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 09:47:53,901 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 09:47:53,901 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-19 09:47:53,902 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:47:53 BoogieIcfgContainer [2024-11-19 09:47:53,902 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 09:47:53,903 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 09:47:53,903 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 09:47:53,907 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 09:47:53,907 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 09:47:52" (1/3) ... [2024-11-19 09:47:53,907 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8b7ec45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:47:53, skipping insertion in model container [2024-11-19 09:47:53,907 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:53" (2/3) ... [2024-11-19 09:47:53,908 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8b7ec45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:47:53, skipping insertion in model container [2024-11-19 09:47:53,908 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:47:53" (3/3) ... [2024-11-19 09:47:53,910 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-1.wvr.c [2024-11-19 09:47:53,922 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 09:47:53,923 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-11-19 09:47:53,923 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 09:47:53,981 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-19 09:47:54,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 67 transitions, 162 flow [2024-11-19 09:47:54,040 INFO L124 PetriNetUnfolderBase]: 9/63 cut-off events. [2024-11-19 09:47:54,041 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-19 09:47:54,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 63 events. 9/63 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 151 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2024-11-19 09:47:54,045 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 67 transitions, 162 flow [2024-11-19 09:47:54,048 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 62 transitions, 148 flow [2024-11-19 09:47:54,057 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:47:54,062 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=None, 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;@6bb79dd0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:47:54,063 INFO L334 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2024-11-19 09:47:54,066 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:47:54,067 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-11-19 09:47:54,067 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:47:54,067 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:47:54,067 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 09:47:54,068 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-19 09:47:54,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:47:54,072 INFO L85 PathProgramCache]: Analyzing trace with hash 882549, now seen corresponding path program 1 times [2024-11-19 09:47:54,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:47:54,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702183684] [2024-11-19 09:47:54,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:47:54,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:47:54,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:47:54,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:47:54,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:47:54,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702183684] [2024-11-19 09:47:54,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702183684] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:47:54,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:47:54,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 09:47:54,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643547224] [2024-11-19 09:47:54,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:47:54,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:47:54,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:47:54,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:47:54,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:47:54,393 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 67 [2024-11-19 09:47:54,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 62 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2024-11-19 09:47:54,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:47:54,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 67 [2024-11-19 09:47:54,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:47:58,877 INFO L124 PetriNetUnfolderBase]: 52585/68171 cut-off events. [2024-11-19 09:47:58,877 INFO L125 PetriNetUnfolderBase]: For 2931/2931 co-relation queries the response was YES. [2024-11-19 09:47:59,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138723 conditions, 68171 events. 52585/68171 cut-off events. For 2931/2931 co-relation queries the response was YES. Maximal size of possible extension queue 2690. Compared 379823 event pairs, 45974 based on Foata normal form. 1/48215 useless extension candidates. Maximal degree in co-relation 131525. Up to 68084 conditions per place. [2024-11-19 09:47:59,299 INFO L140 encePairwiseOnDemand]: 59/67 looper letters, 47 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2024-11-19 09:47:59,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 55 transitions, 232 flow [2024-11-19 09:47:59,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:47:59,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:47:59,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 88 transitions. [2024-11-19 09:47:59,308 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43781094527363185 [2024-11-19 09:47:59,309 INFO L175 Difference]: Start difference. First operand has 66 places, 62 transitions, 148 flow. Second operand 3 states and 88 transitions. [2024-11-19 09:47:59,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 55 transitions, 232 flow [2024-11-19 09:47:59,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 55 transitions, 216 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-19 09:47:59,451 INFO L231 Difference]: Finished difference. Result has 57 places, 55 transitions, 122 flow [2024-11-19 09:47:59,453 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=57, PETRI_TRANSITIONS=55} [2024-11-19 09:47:59,455 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, -9 predicate places. [2024-11-19 09:47:59,455 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 55 transitions, 122 flow [2024-11-19 09:47:59,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2024-11-19 09:47:59,455 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:47:59,455 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 09:47:59,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 09:47:59,456 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-19 09:47:59,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:47:59,457 INFO L85 PathProgramCache]: Analyzing trace with hash 882550, now seen corresponding path program 1 times [2024-11-19 09:47:59,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:47:59,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889057047] [2024-11-19 09:47:59,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:47:59,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:47:59,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:47:59,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:47:59,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:47:59,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889057047] [2024-11-19 09:47:59,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889057047] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:47:59,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:47:59,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:47:59,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597123551] [2024-11-19 09:47:59,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:47:59,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:47:59,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:47:59,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:47:59,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:47:59,686 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 67 [2024-11-19 09:47:59,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 55 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2024-11-19 09:47:59,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:47:59,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 67 [2024-11-19 09:47:59,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:48:02,883 INFO L124 PetriNetUnfolderBase]: 52585/68170 cut-off events. [2024-11-19 09:48:02,884 INFO L125 PetriNetUnfolderBase]: For 665/665 co-relation queries the response was YES. [2024-11-19 09:48:02,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137081 conditions, 68170 events. 52585/68170 cut-off events. For 665/665 co-relation queries the response was YES. Maximal size of possible extension queue 2690. Compared 380010 event pairs, 45974 based on Foata normal form. 0/48214 useless extension candidates. Maximal degree in co-relation 137068. Up to 68084 conditions per place. [2024-11-19 09:48:03,156 INFO L140 encePairwiseOnDemand]: 62/67 looper letters, 45 selfloop transitions, 4 changer transitions 0/54 dead transitions. [2024-11-19 09:48:03,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 54 transitions, 218 flow [2024-11-19 09:48:03,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:48:03,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:48:03,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2024-11-19 09:48:03,158 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35074626865671643 [2024-11-19 09:48:03,158 INFO L175 Difference]: Start difference. First operand has 57 places, 55 transitions, 122 flow. Second operand 4 states and 94 transitions. [2024-11-19 09:48:03,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 54 transitions, 218 flow [2024-11-19 09:48:03,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 54 transitions, 214 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:48:03,160 INFO L231 Difference]: Finished difference. Result has 57 places, 54 transitions, 124 flow [2024-11-19 09:48:03,160 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=124, PETRI_PLACES=57, PETRI_TRANSITIONS=54} [2024-11-19 09:48:03,161 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, -9 predicate places. [2024-11-19 09:48:03,161 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 54 transitions, 124 flow [2024-11-19 09:48:03,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2024-11-19 09:48:03,162 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:48:03,162 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:48:03,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 09:48:03,163 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-19 09:48:03,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:48:03,164 INFO L85 PathProgramCache]: Analyzing trace with hash -852936496, now seen corresponding path program 1 times [2024-11-19 09:48:03,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:48:03,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621989068] [2024-11-19 09:48:03,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:48:03,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:48:03,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:48:03,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:48:03,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:48:03,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621989068] [2024-11-19 09:48:03,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621989068] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:48:03,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:48:03,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:48:03,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678285033] [2024-11-19 09:48:03,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:48:03,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:48:03,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:48:03,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:48:03,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:48:03,248 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 67 [2024-11-19 09:48:03,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 54 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 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) [2024-11-19 09:48:03,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:48:03,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 67 [2024-11-19 09:48:03,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:48:05,341 INFO L124 PetriNetUnfolderBase]: 33332/43282 cut-off events. [2024-11-19 09:48:05,341 INFO L125 PetriNetUnfolderBase]: For 456/456 co-relation queries the response was YES. [2024-11-19 09:48:05,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87080 conditions, 43282 events. 33332/43282 cut-off events. For 456/456 co-relation queries the response was YES. Maximal size of possible extension queue 1681. Compared 229656 event pairs, 28616 based on Foata normal form. 0/33739 useless extension candidates. Maximal degree in co-relation 87065. Up to 43203 conditions per place. [2024-11-19 09:48:05,526 INFO L140 encePairwiseOnDemand]: 61/67 looper letters, 43 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2024-11-19 09:48:05,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 50 transitions, 206 flow [2024-11-19 09:48:05,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:48:05,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:48:05,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2024-11-19 09:48:05,528 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34701492537313433 [2024-11-19 09:48:05,528 INFO L175 Difference]: Start difference. First operand has 57 places, 54 transitions, 124 flow. Second operand 4 states and 93 transitions. [2024-11-19 09:48:05,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 50 transitions, 206 flow [2024-11-19 09:48:05,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 50 transitions, 198 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 09:48:05,529 INFO L231 Difference]: Finished difference. Result has 53 places, 50 transitions, 112 flow [2024-11-19 09:48:05,530 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=112, PETRI_PLACES=53, PETRI_TRANSITIONS=50} [2024-11-19 09:48:05,531 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, -13 predicate places. [2024-11-19 09:48:05,531 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 50 transitions, 112 flow [2024-11-19 09:48:05,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 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) [2024-11-19 09:48:05,532 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:48:05,532 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:48:05,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 09:48:05,532 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-19 09:48:05,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:48:05,532 INFO L85 PathProgramCache]: Analyzing trace with hash -852936495, now seen corresponding path program 1 times [2024-11-19 09:48:05,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:48:05,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974017037] [2024-11-19 09:48:05,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:48:05,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:48:05,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:48:05,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:48:05,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:48:05,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974017037] [2024-11-19 09:48:05,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974017037] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:48:05,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:48:05,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:48:05,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459150619] [2024-11-19 09:48:05,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:48:05,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:48:05,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:48:05,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:48:05,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:48:05,606 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 67 [2024-11-19 09:48:05,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 50 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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) [2024-11-19 09:48:05,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:48:05,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 67 [2024-11-19 09:48:05,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:48:08,443 INFO L124 PetriNetUnfolderBase]: 45012/59021 cut-off events. [2024-11-19 09:48:08,443 INFO L125 PetriNetUnfolderBase]: For 728/728 co-relation queries the response was YES. [2024-11-19 09:48:08,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118683 conditions, 59021 events. 45012/59021 cut-off events. For 728/728 co-relation queries the response was YES. Maximal size of possible extension queue 2092. Compared 331521 event pairs, 39355 based on Foata normal form. 1507/47739 useless extension candidates. Maximal degree in co-relation 86609. Up to 42952 conditions per place. [2024-11-19 09:48:08,681 INFO L140 encePairwiseOnDemand]: 59/67 looper letters, 78 selfloop transitions, 3 changer transitions 1/87 dead transitions. [2024-11-19 09:48:08,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 87 transitions, 360 flow [2024-11-19 09:48:08,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:48:08,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:48:08,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2024-11-19 09:48:08,682 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.503731343283582 [2024-11-19 09:48:08,682 INFO L175 Difference]: Start difference. First operand has 53 places, 50 transitions, 112 flow. Second operand 4 states and 135 transitions. [2024-11-19 09:48:08,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 87 transitions, 360 flow [2024-11-19 09:48:08,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 87 transitions, 356 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:48:08,686 INFO L231 Difference]: Finished difference. Result has 56 places, 52 transitions, 138 flow [2024-11-19 09:48:08,686 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=56, PETRI_TRANSITIONS=52} [2024-11-19 09:48:08,687 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, -10 predicate places. [2024-11-19 09:48:08,687 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 52 transitions, 138 flow [2024-11-19 09:48:08,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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) [2024-11-19 09:48:08,687 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:48:08,687 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:48:08,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 09:48:08,687 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-19 09:48:08,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:48:08,688 INFO L85 PathProgramCache]: Analyzing trace with hash -2086864114, now seen corresponding path program 1 times [2024-11-19 09:48:08,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:48:08,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156261902] [2024-11-19 09:48:08,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:48:08,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:48:08,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:48:08,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:48:08,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:48:08,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156261902] [2024-11-19 09:48:08,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156261902] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:48:08,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566312600] [2024-11-19 09:48:08,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:48:08,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:48:08,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:48:08,749 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:48:08,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 09:48:08,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:48:08,823 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 09:48:08,827 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:48:08,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:48:08,894 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:48:08,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:48:08,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566312600] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:48:08,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:48:08,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 8 [2024-11-19 09:48:08,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388016867] [2024-11-19 09:48:08,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:48:08,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 09:48:08,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:48:08,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 09:48:08,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-11-19 09:48:08,957 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 67 [2024-11-19 09:48:08,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 138 flow. Second operand has 10 states, 10 states have (on average 14.0) internal successors, (140), 10 states have internal predecessors, (140), 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) [2024-11-19 09:48:08,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:48:08,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 67 [2024-11-19 09:48:08,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:48:12,721 INFO L124 PetriNetUnfolderBase]: 56893/74963 cut-off events. [2024-11-19 09:48:12,721 INFO L125 PetriNetUnfolderBase]: For 4800/4800 co-relation queries the response was YES. [2024-11-19 09:48:12,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155499 conditions, 74963 events. 56893/74963 cut-off events. For 4800/4800 co-relation queries the response was YES. Maximal size of possible extension queue 2372. Compared 435402 event pairs, 50289 based on Foata normal form. 1506/60209 useless extension candidates. Maximal degree in co-relation 123426. Up to 42950 conditions per place. [2024-11-19 09:48:13,066 INFO L140 encePairwiseOnDemand]: 58/67 looper letters, 78 selfloop transitions, 8 changer transitions 0/91 dead transitions. [2024-11-19 09:48:13,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 91 transitions, 403 flow [2024-11-19 09:48:13,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 09:48:13,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 09:48:13,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-11-19 09:48:13,069 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37100213219616207 [2024-11-19 09:48:13,069 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 138 flow. Second operand 7 states and 174 transitions. [2024-11-19 09:48:13,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 91 transitions, 403 flow [2024-11-19 09:48:13,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 91 transitions, 401 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:48:13,074 INFO L231 Difference]: Finished difference. Result has 64 places, 56 transitions, 191 flow [2024-11-19 09:48:13,074 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=191, PETRI_PLACES=64, PETRI_TRANSITIONS=56} [2024-11-19 09:48:13,074 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, -2 predicate places. [2024-11-19 09:48:13,075 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 56 transitions, 191 flow [2024-11-19 09:48:13,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.0) internal successors, (140), 10 states have internal predecessors, (140), 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) [2024-11-19 09:48:13,075 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:48:13,075 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:48:13,089 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 09:48:13,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:48:13,280 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-19 09:48:13,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:48:13,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1222540746, now seen corresponding path program 1 times [2024-11-19 09:48:13,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:48:13,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681004544] [2024-11-19 09:48:13,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:48:13,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:48:13,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:48:13,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:48:13,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:48:13,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681004544] [2024-11-19 09:48:13,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681004544] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:48:13,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:48:13,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:48:13,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762844607] [2024-11-19 09:48:13,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:48:13,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:48:13,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:48:13,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:48:13,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:48:13,338 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 67 [2024-11-19 09:48:13,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 56 transitions, 191 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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) [2024-11-19 09:48:13,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:48:13,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 67 [2024-11-19 09:48:13,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:48:16,501 INFO L124 PetriNetUnfolderBase]: 49569/65350 cut-off events. [2024-11-19 09:48:16,501 INFO L125 PetriNetUnfolderBase]: For 7732/7732 co-relation queries the response was YES. [2024-11-19 09:48:16,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141014 conditions, 65350 events. 49569/65350 cut-off events. For 7732/7732 co-relation queries the response was YES. Maximal size of possible extension queue 2294. Compared 376900 event pairs, 43898 based on Foata normal form. 611/51887 useless extension candidates. Maximal degree in co-relation 96536. Up to 59025 conditions per place. [2024-11-19 09:48:16,790 INFO L140 encePairwiseOnDemand]: 60/67 looper letters, 49 selfloop transitions, 2 changer transitions 29/85 dead transitions. [2024-11-19 09:48:16,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 85 transitions, 419 flow [2024-11-19 09:48:16,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:48:16,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:48:16,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 128 transitions. [2024-11-19 09:48:16,791 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47761194029850745 [2024-11-19 09:48:16,791 INFO L175 Difference]: Start difference. First operand has 64 places, 56 transitions, 191 flow. Second operand 4 states and 128 transitions. [2024-11-19 09:48:16,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 85 transitions, 419 flow [2024-11-19 09:48:16,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 85 transitions, 410 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-19 09:48:16,798 INFO L231 Difference]: Finished difference. Result has 67 places, 55 transitions, 185 flow [2024-11-19 09:48:16,798 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=185, PETRI_PLACES=67, PETRI_TRANSITIONS=55} [2024-11-19 09:48:16,798 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 1 predicate places. [2024-11-19 09:48:16,798 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 55 transitions, 185 flow [2024-11-19 09:48:16,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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) [2024-11-19 09:48:16,799 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:48:16,799 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:48:16,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 09:48:16,799 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-19 09:48:16,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:48:16,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1814635019, now seen corresponding path program 2 times [2024-11-19 09:48:16,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:48:16,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997802091] [2024-11-19 09:48:16,800 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:48:16,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:48:16,819 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 09:48:16,819 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:48:16,971 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 09:48:16,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:48:16,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997802091] [2024-11-19 09:48:16,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997802091] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:48:16,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:48:16,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:48:16,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865904990] [2024-11-19 09:48:16,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:48:16,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:48:16,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:48:16,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:48:16,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:48:16,978 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 67 [2024-11-19 09:48:16,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 55 transitions, 185 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:48:16,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:48:16,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 67 [2024-11-19 09:48:16,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:48:19,773 INFO L124 PetriNetUnfolderBase]: 37613/49370 cut-off events. [2024-11-19 09:48:19,774 INFO L125 PetriNetUnfolderBase]: For 7811/7811 co-relation queries the response was YES. [2024-11-19 09:48:19,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109001 conditions, 49370 events. 37613/49370 cut-off events. For 7811/7811 co-relation queries the response was YES. Maximal size of possible extension queue 1900. Compared 274892 event pairs, 32760 based on Foata normal form. 0/40129 useless extension candidates. Maximal degree in co-relation 108979. Up to 49251 conditions per place. [2024-11-19 09:48:19,988 INFO L140 encePairwiseOnDemand]: 63/67 looper letters, 45 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2024-11-19 09:48:19,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 53 transitions, 269 flow [2024-11-19 09:48:19,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:48:19,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:48:19,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2024-11-19 09:48:19,989 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34701492537313433 [2024-11-19 09:48:19,989 INFO L175 Difference]: Start difference. First operand has 67 places, 55 transitions, 185 flow. Second operand 4 states and 93 transitions. [2024-11-19 09:48:19,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 53 transitions, 269 flow [2024-11-19 09:48:20,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 53 transitions, 261 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-19 09:48:20,004 INFO L231 Difference]: Finished difference. Result has 64 places, 53 transitions, 171 flow [2024-11-19 09:48:20,004 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=171, PETRI_PLACES=64, PETRI_TRANSITIONS=53} [2024-11-19 09:48:20,005 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, -2 predicate places. [2024-11-19 09:48:20,005 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 53 transitions, 171 flow [2024-11-19 09:48:20,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:48:20,005 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:48:20,005 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:48:20,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 09:48:20,005 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-19 09:48:20,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:48:20,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1056758151, now seen corresponding path program 1 times [2024-11-19 09:48:20,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:48:20,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156555655] [2024-11-19 09:48:20,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:48:20,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:48:20,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:48:20,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:48:20,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:48:20,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156555655] [2024-11-19 09:48:20,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156555655] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:48:20,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614728899] [2024-11-19 09:48:20,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:48:20,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:48:20,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:48:20,075 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:48:20,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 09:48:20,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:48:20,140 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 09:48:20,141 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:48:20,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:48:20,201 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:48:20,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:48:20,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614728899] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:48:20,240 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:48:20,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 8 [2024-11-19 09:48:20,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575462210] [2024-11-19 09:48:20,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:48:20,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 09:48:20,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:48:20,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 09:48:20,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-11-19 09:48:20,249 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 67 [2024-11-19 09:48:20,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 53 transitions, 171 flow. Second operand has 10 states, 10 states have (on average 14.8) internal successors, (148), 10 states have internal predecessors, (148), 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) [2024-11-19 09:48:20,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:48:20,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 67 [2024-11-19 09:48:20,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:48:22,446 INFO L124 PetriNetUnfolderBase]: 29978/39446 cut-off events. [2024-11-19 09:48:22,446 INFO L125 PetriNetUnfolderBase]: For 7524/7524 co-relation queries the response was YES. [2024-11-19 09:48:22,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87131 conditions, 39446 events. 29978/39446 cut-off events. For 7524/7524 co-relation queries the response was YES. Maximal size of possible extension queue 1422. Compared 213530 event pairs, 26084 based on Foata normal form. 611/33121 useless extension candidates. Maximal degree in co-relation 74626. Up to 33163 conditions per place. [2024-11-19 09:48:22,657 INFO L140 encePairwiseOnDemand]: 58/67 looper letters, 66 selfloop transitions, 7 changer transitions 4/82 dead transitions. [2024-11-19 09:48:22,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 82 transitions, 393 flow [2024-11-19 09:48:22,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 09:48:22,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 09:48:22,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-11-19 09:48:22,658 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35181236673773986 [2024-11-19 09:48:22,658 INFO L175 Difference]: Start difference. First operand has 64 places, 53 transitions, 171 flow. Second operand 7 states and 165 transitions. [2024-11-19 09:48:22,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 82 transitions, 393 flow [2024-11-19 09:48:22,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 82 transitions, 385 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-19 09:48:22,669 INFO L231 Difference]: Finished difference. Result has 68 places, 53 transitions, 186 flow [2024-11-19 09:48:22,669 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=186, PETRI_PLACES=68, PETRI_TRANSITIONS=53} [2024-11-19 09:48:22,669 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 2 predicate places. [2024-11-19 09:48:22,670 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 53 transitions, 186 flow [2024-11-19 09:48:22,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.8) internal successors, (148), 10 states have internal predecessors, (148), 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) [2024-11-19 09:48:22,670 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:48:22,670 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:48:22,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-19 09:48:22,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-19 09:48:22,871 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-19 09:48:22,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:48:22,871 INFO L85 PathProgramCache]: Analyzing trace with hash 653474308, now seen corresponding path program 2 times [2024-11-19 09:48:22,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:48:22,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706792075] [2024-11-19 09:48:22,871 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:48:22,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:48:22,884 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 09:48:22,884 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:48:23,011 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 09:48:23,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:48:23,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706792075] [2024-11-19 09:48:23,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706792075] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:48:23,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:48:23,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:48:23,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054946663] [2024-11-19 09:48:23,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:48:23,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:48:23,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:48:23,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:48:23,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:48:23,021 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 67 [2024-11-19 09:48:23,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 53 transitions, 186 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2024-11-19 09:48:23,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:48:23,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 67 [2024-11-19 09:48:23,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:48:24,468 INFO L124 PetriNetUnfolderBase]: 24355/32134 cut-off events. [2024-11-19 09:48:24,469 INFO L125 PetriNetUnfolderBase]: For 4859/4859 co-relation queries the response was YES. [2024-11-19 09:48:24,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69541 conditions, 32134 events. 24355/32134 cut-off events. For 4859/4859 co-relation queries the response was YES. Maximal size of possible extension queue 1160. Compared 171067 event pairs, 21124 based on Foata normal form. 0/27481 useless extension candidates. Maximal degree in co-relation 57030. Up to 32015 conditions per place. [2024-11-19 09:48:24,582 INFO L140 encePairwiseOnDemand]: 63/67 looper letters, 43 selfloop transitions, 3 changer transitions 0/51 dead transitions. [2024-11-19 09:48:24,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 51 transitions, 266 flow [2024-11-19 09:48:24,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:48:24,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:48:24,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2024-11-19 09:48:24,583 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33955223880597013 [2024-11-19 09:48:24,583 INFO L175 Difference]: Start difference. First operand has 68 places, 53 transitions, 186 flow. Second operand 4 states and 91 transitions. [2024-11-19 09:48:24,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 51 transitions, 266 flow [2024-11-19 09:48:24,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 51 transitions, 250 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-19 09:48:24,589 INFO L231 Difference]: Finished difference. Result has 64 places, 51 transitions, 164 flow [2024-11-19 09:48:24,590 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=164, PETRI_PLACES=64, PETRI_TRANSITIONS=51} [2024-11-19 09:48:24,590 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, -2 predicate places. [2024-11-19 09:48:24,590 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 51 transitions, 164 flow [2024-11-19 09:48:24,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2024-11-19 09:48:24,591 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:48:24,591 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, 1, 1, 1] [2024-11-19 09:48:24,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 09:48:24,591 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-19 09:48:24,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:48:24,591 INFO L85 PathProgramCache]: Analyzing trace with hash -190697098, now seen corresponding path program 1 times [2024-11-19 09:48:24,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:48:24,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460129609] [2024-11-19 09:48:24,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:48:24,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:48:24,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:48:24,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:48:24,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:48:24,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460129609] [2024-11-19 09:48:24,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460129609] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:48:24,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:48:24,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:48:24,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222105994] [2024-11-19 09:48:24,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:48:24,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:48:24,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:48:24,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:48:24,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:48:24,647 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 67 [2024-11-19 09:48:24,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 51 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 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) [2024-11-19 09:48:24,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:48:24,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 67 [2024-11-19 09:48:24,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand