./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4f9af400 extending candidate: java ['java'] extending candidate: /usr/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/oracle-jdk-bin-*/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/openjdk-*/bin/java ['java', '/usr/bin/java'] extending candidate: /usr/lib/jvm/java-*-openjdk-amd64/bin/java ['java', '/usr/bin/java', '/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java', '/usr/lib/jvm/java-17-openjdk-amd64/bin/java', '/usr/lib/jvm/java-11-openjdk-amd64/bin/java', '/usr/lib/jvm/java-1.17.0-openjdk-amd64/bin/java'] ['/root/.sdkman/candidates/java/21.0.5-tem/bin/java', '-Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config', '-Xmx15G', '-Xms4m', '-jar', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar', '-data', '@noDefault', '-ultimatedata', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data', '-tc', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml', '-i', '../sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf', '--cacsl2boogietranslator.entry.function', 'main', '--witnessprinter.witness.directory', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux', '--witnessprinter.witness.filename', 'witness', '--witnessprinter.write.witness.besides.input.file', 'false', '--witnessprinter.graph.data.specification', 'CHECK( init(main()), LTL(G ! call(reach_error())) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '32bit', '--witnessprinter.graph.data.programhash', '39e90898aa78f5642c5c7d6f9df6b2e15e069a046a9465d5d61576c4b07f46b8'] Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 39e90898aa78f5642c5c7d6f9df6b2e15e069a046a9465d5d61576c4b07f46b8 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 11:26:52,464 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 11:26:52,563 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-07 11:26:52,569 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 11:26:52,569 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 11:26:52,592 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 11:26:52,594 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 11:26:52,595 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 11:26:52,595 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 11:26:52,595 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 11:26:52,596 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 11:26:52,596 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 11:26:52,596 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 11:26:52,597 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 11:26:52,597 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 11:26:52,597 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 11:26:52,597 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 11:26:52,597 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 11:26:52,597 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 11:26:52,598 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 11:26:52,598 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 11:26:52,598 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 11:26:52,598 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 11:26:52,598 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 11:26:52,598 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 11:26:52,598 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 11:26:52,598 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 11:26:52,599 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 11:26:52,599 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 11:26:52,599 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 11:26:52,599 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 11:26:52,599 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 11:26:52,599 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:26:52,599 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 11:26:52,600 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 11:26:52,600 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 11:26:52,600 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 11:26:52,600 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 11:26:52,600 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 11:26:52,600 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 11:26:52,600 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 11:26:52,600 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 11:26:52,600 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39e90898aa78f5642c5c7d6f9df6b2e15e069a046a9465d5d61576c4b07f46b8 [2024-11-07 11:26:53,055 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 11:26:53,061 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 11:26:53,062 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 11:26:53,063 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 11:26:53,063 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 11:26:53,065 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c [2024-11-07 11:26:54,361 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 11:26:54,604 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 11:26:54,605 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c [2024-11-07 11:26:54,612 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2187f3af3/b5e15f465657413a880b3d5a6aa24621/FLAG433eb327b [2024-11-07 11:26:54,629 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2187f3af3/b5e15f465657413a880b3d5a6aa24621 [2024-11-07 11:26:54,631 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 11:26:54,632 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 11:26:54,635 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 11:26:54,636 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 11:26:54,639 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 11:26:54,639 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:26:54" (1/1) ... [2024-11-07 11:26:54,640 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d76e020 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:26:54, skipping insertion in model container [2024-11-07 11:26:54,640 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:26:54" (1/1) ... [2024-11-07 11:26:54,655 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 11:26:54,800 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c[2904,2917] [2024-11-07 11:26:54,812 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:26:54,820 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 11:26:54,841 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c[2904,2917] [2024-11-07 11:26:54,847 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:26:54,861 INFO L204 MainTranslator]: Completed translation [2024-11-07 11:26:54,863 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:26:54 WrapperNode [2024-11-07 11:26:54,864 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 11:26:54,865 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 11:26:54,865 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 11:26:54,866 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 11:26:54,871 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:26:54" (1/1) ... [2024-11-07 11:26:54,878 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:26:54" (1/1) ... [2024-11-07 11:26:54,903 INFO L138 Inliner]: procedures = 25, calls = 40, calls flagged for inlining = 16, calls inlined = 22, statements flattened = 272 [2024-11-07 11:26:54,906 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 11:26:54,906 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 11:26:54,907 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 11:26:54,907 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 11:26:54,913 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:26:54" (1/1) ... [2024-11-07 11:26:54,914 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:26:54" (1/1) ... [2024-11-07 11:26:54,916 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:26:54" (1/1) ... [2024-11-07 11:26:54,947 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-07 11:26:54,948 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:26:54" (1/1) ... [2024-11-07 11:26:54,948 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:26:54" (1/1) ... [2024-11-07 11:26:54,961 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:26:54" (1/1) ... [2024-11-07 11:26:54,969 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:26:54" (1/1) ... [2024-11-07 11:26:54,970 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:26:54" (1/1) ... [2024-11-07 11:26:54,971 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:26:54" (1/1) ... [2024-11-07 11:26:54,976 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 11:26:54,981 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 11:26:54,981 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 11:26:54,981 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 11:26:54,982 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:26:54" (1/1) ... [2024-11-07 11:26:54,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:26:55,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:26:55,023 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-07 11:26:55,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-07 11:26:55,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 11:26:55,045 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-07 11:26:55,045 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-07 11:26:55,045 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-07 11:26:55,045 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-07 11:26:55,045 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-07 11:26:55,045 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-07 11:26:55,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 11:26:55,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-07 11:26:55,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-07 11:26:55,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-07 11:26:55,045 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-07 11:26:55,045 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-07 11:26:55,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-07 11:26:55,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 11:26:55,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 11:26:55,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-07 11:26:55,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-07 11:26:55,046 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-07 11:26:55,180 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 11:26:55,183 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 11:26:55,530 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 11:26:55,530 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 11:26:55,824 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 11:26:55,824 INFO L316 CfgBuilder]: Removed 8 assume(true) statements. [2024-11-07 11:26:55,825 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:26:55 BoogieIcfgContainer [2024-11-07 11:26:55,825 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 11:26:55,827 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 11:26:55,827 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 11:26:55,831 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 11:26:55,831 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 11:26:54" (1/3) ... [2024-11-07 11:26:55,831 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4977b706 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:26:55, skipping insertion in model container [2024-11-07 11:26:55,831 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:26:54" (2/3) ... [2024-11-07 11:26:55,832 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4977b706 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:26:55, skipping insertion in model container [2024-11-07 11:26:55,832 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:26:55" (3/3) ... [2024-11-07 11:26:55,833 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-dot-product.wvr.c [2024-11-07 11:26:55,844 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 11:26:55,844 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-07 11:26:55,844 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 11:26:55,900 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-07 11:26:55,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 50 transitions, 121 flow [2024-11-07 11:26:55,966 INFO L124 PetriNetUnfolderBase]: 11/47 cut-off events. [2024-11-07 11:26:55,968 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-07 11:26:55,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 47 events. 11/47 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 76 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2024-11-07 11:26:55,974 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 50 transitions, 121 flow [2024-11-07 11:26:55,979 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 46 transitions, 110 flow [2024-11-07 11:26:55,986 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 11:26:56,000 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6afe04d4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 11:26:56,004 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-07 11:26:56,021 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 11:26:56,021 INFO L124 PetriNetUnfolderBase]: 11/45 cut-off events. [2024-11-07 11:26:56,022 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-07 11:26:56,022 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:26:56,022 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] [2024-11-07 11:26:56,023 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:26:56,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:26:56,026 INFO L85 PathProgramCache]: Analyzing trace with hash -643790171, now seen corresponding path program 1 times [2024-11-07 11:26:56,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:26:56,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792753825] [2024-11-07 11:26:56,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:26:56,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:26:56,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:26:56,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:26:56,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:26:56,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792753825] [2024-11-07 11:26:56,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792753825] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:26:56,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:26:56,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 11:26:56,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936516392] [2024-11-07 11:26:56,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:26:56,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:26:56,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:26:56,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:26:56,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:26:56,375 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 50 [2024-11-07 11:26:56,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 46 transitions, 110 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) [2024-11-07 11:26:56,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:26:56,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 50 [2024-11-07 11:26:56,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:26:56,795 INFO L124 PetriNetUnfolderBase]: 2373/3340 cut-off events. [2024-11-07 11:26:56,796 INFO L125 PetriNetUnfolderBase]: For 181/181 co-relation queries the response was YES. [2024-11-07 11:26:56,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6751 conditions, 3340 events. 2373/3340 cut-off events. For 181/181 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 15242 event pairs, 1692 based on Foata normal form. 339/2982 useless extension candidates. Maximal degree in co-relation 6310. Up to 3232 conditions per place. [2024-11-07 11:26:56,816 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 38 selfloop transitions, 2 changer transitions 3/47 dead transitions. [2024-11-07 11:26:56,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 47 transitions, 198 flow [2024-11-07 11:26:56,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:26:56,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:26:56,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 83 transitions. [2024-11-07 11:26:56,825 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.332 [2024-11-07 11:26:56,826 INFO L175 Difference]: Start difference. First operand has 45 places, 46 transitions, 110 flow. Second operand 5 states and 83 transitions. [2024-11-07 11:26:56,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 47 transitions, 198 flow [2024-11-07 11:26:56,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 47 transitions, 186 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-07 11:26:56,836 INFO L231 Difference]: Finished difference. Result has 46 places, 44 transitions, 110 flow [2024-11-07 11:26:56,837 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=110, PETRI_PLACES=46, PETRI_TRANSITIONS=44} [2024-11-07 11:26:56,840 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 1 predicate places. [2024-11-07 11:26:56,840 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 44 transitions, 110 flow [2024-11-07 11:26:56,840 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) [2024-11-07 11:26:56,840 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:26:56,840 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:26:56,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 11:26:56,841 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:26:56,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:26:56,841 INFO L85 PathProgramCache]: Analyzing trace with hash 389702561, now seen corresponding path program 1 times [2024-11-07 11:26:56,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:26:56,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160645237] [2024-11-07 11:26:56,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:26:56,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:26:56,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:26:56,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:26:56,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:26:56,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160645237] [2024-11-07 11:26:56,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160645237] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:26:56,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108523348] [2024-11-07 11:26:56,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:26:56,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:26:56,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:26:56,993 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:26:56,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-07 11:26:57,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:26:57,075 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-07 11:26:57,078 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:26:57,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:26:57,120 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:26:57,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:26:57,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108523348] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-07 11:26:57,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-07 11:26:57,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-11-07 11:26:57,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406587202] [2024-11-07 11:26:57,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:26:57,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 11:26:57,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:26:57,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 11:26:57,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-07 11:26:57,155 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 50 [2024-11-07 11:26:57,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 110 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:26:57,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:26:57,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 50 [2024-11-07 11:26:57,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:26:57,462 INFO L124 PetriNetUnfolderBase]: 2677/3766 cut-off events. [2024-11-07 11:26:57,463 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-11-07 11:26:57,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7496 conditions, 3766 events. 2677/3766 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 17544 event pairs, 794 based on Foata normal form. 0/3023 useless extension candidates. Maximal degree in co-relation 7483. Up to 2323 conditions per place. [2024-11-07 11:26:57,480 INFO L140 encePairwiseOnDemand]: 44/50 looper letters, 57 selfloop transitions, 5 changer transitions 0/66 dead transitions. [2024-11-07 11:26:57,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 66 transitions, 280 flow [2024-11-07 11:26:57,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:26:57,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:26:57,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 98 transitions. [2024-11-07 11:26:57,482 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.392 [2024-11-07 11:26:57,482 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 110 flow. Second operand 5 states and 98 transitions. [2024-11-07 11:26:57,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 66 transitions, 280 flow [2024-11-07 11:26:57,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 66 transitions, 270 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-11-07 11:26:57,484 INFO L231 Difference]: Finished difference. Result has 47 places, 45 transitions, 123 flow [2024-11-07 11:26:57,484 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=123, PETRI_PLACES=47, PETRI_TRANSITIONS=45} [2024-11-07 11:26:57,484 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 2 predicate places. [2024-11-07 11:26:57,484 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 45 transitions, 123 flow [2024-11-07 11:26:57,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:26:57,485 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:26:57,485 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:26:57,498 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-07 11:26:57,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:26:57,686 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:26:57,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:26:57,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1767188247, now seen corresponding path program 1 times [2024-11-07 11:26:57,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:26:57,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944277658] [2024-11-07 11:26:57,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:26:57,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:26:57,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:26:57,778 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:26:57,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:26:57,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944277658] [2024-11-07 11:26:57,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944277658] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:26:57,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304260609] [2024-11-07 11:26:57,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:26:57,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:26:57,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:26:57,781 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:26:57,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-07 11:26:57,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:26:57,856 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-07 11:26:57,857 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:26:57,917 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:26:57,918 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:26:57,944 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:26:57,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304260609] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:26:57,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:26:57,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-11-07 11:26:57,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945174589] [2024-11-07 11:26:57,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:26:57,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 11:26:57,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:26:57,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 11:26:57,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-07 11:26:57,950 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 50 [2024-11-07 11:26:57,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 123 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:26:57,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:26:57,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 50 [2024-11-07 11:26:57,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:26:58,317 INFO L124 PetriNetUnfolderBase]: 3003/4236 cut-off events. [2024-11-07 11:26:58,318 INFO L125 PetriNetUnfolderBase]: For 1295/1295 co-relation queries the response was YES. [2024-11-07 11:26:58,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9433 conditions, 4236 events. 3003/4236 cut-off events. For 1295/1295 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 20053 event pairs, 881 based on Foata normal form. 0/3555 useless extension candidates. Maximal degree in co-relation 9414. Up to 2470 conditions per place. [2024-11-07 11:26:58,339 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 58 selfloop transitions, 4 changer transitions 0/66 dead transitions. [2024-11-07 11:26:58,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 66 transitions, 307 flow [2024-11-07 11:26:58,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 11:26:58,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 11:26:58,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2024-11-07 11:26:58,342 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44 [2024-11-07 11:26:58,342 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 123 flow. Second operand 4 states and 88 transitions. [2024-11-07 11:26:58,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 66 transitions, 307 flow [2024-11-07 11:26:58,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 66 transitions, 298 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-07 11:26:58,344 INFO L231 Difference]: Finished difference. Result has 49 places, 46 transitions, 138 flow [2024-11-07 11:26:58,344 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=49, PETRI_TRANSITIONS=46} [2024-11-07 11:26:58,344 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 4 predicate places. [2024-11-07 11:26:58,344 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 46 transitions, 138 flow [2024-11-07 11:26:58,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:26:58,344 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:26:58,344 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] [2024-11-07 11:26:58,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-07 11:26:58,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:26:58,551 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:26:58,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:26:58,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1329234884, now seen corresponding path program 1 times [2024-11-07 11:26:58,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:26:58,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516782670] [2024-11-07 11:26:58,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:26:58,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:26:58,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:26:58,710 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:26:58,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:26:58,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516782670] [2024-11-07 11:26:58,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516782670] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:26:58,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:26:58,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 11:26:58,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894011656] [2024-11-07 11:26:58,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:26:58,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 11:26:58,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:26:58,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 11:26:58,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 11:26:58,714 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 50 [2024-11-07 11:26:58,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 46 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 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) [2024-11-07 11:26:58,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:26:58,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 50 [2024-11-07 11:26:58,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:26:59,658 INFO L124 PetriNetUnfolderBase]: 5022/7069 cut-off events. [2024-11-07 11:26:59,659 INFO L125 PetriNetUnfolderBase]: For 3084/3084 co-relation queries the response was YES. [2024-11-07 11:26:59,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17044 conditions, 7069 events. 5022/7069 cut-off events. For 3084/3084 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 35836 event pairs, 1438 based on Foata normal form. 1/6066 useless extension candidates. Maximal degree in co-relation 17024. Up to 4351 conditions per place. [2024-11-07 11:26:59,711 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 68 selfloop transitions, 4 changer transitions 1/77 dead transitions. [2024-11-07 11:26:59,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 77 transitions, 380 flow [2024-11-07 11:26:59,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 11:26:59,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 11:26:59,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 90 transitions. [2024-11-07 11:26:59,713 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-11-07 11:26:59,714 INFO L175 Difference]: Start difference. First operand has 49 places, 46 transitions, 138 flow. Second operand 3 states and 90 transitions. [2024-11-07 11:26:59,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 77 transitions, 380 flow [2024-11-07 11:26:59,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 77 transitions, 373 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 11:26:59,729 INFO L231 Difference]: Finished difference. Result has 50 places, 49 transitions, 160 flow [2024-11-07 11:26:59,730 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=50, PETRI_TRANSITIONS=49} [2024-11-07 11:26:59,731 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 5 predicate places. [2024-11-07 11:26:59,731 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 49 transitions, 160 flow [2024-11-07 11:26:59,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 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) [2024-11-07 11:26:59,731 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:26:59,732 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:26:59,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 11:26:59,732 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:26:59,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:26:59,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1146571422, now seen corresponding path program 1 times [2024-11-07 11:26:59,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:26:59,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668445506] [2024-11-07 11:26:59,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:26:59,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:26:59,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:26:59,934 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:26:59,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:26:59,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668445506] [2024-11-07 11:26:59,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668445506] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:26:59,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:26:59,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-07 11:26:59,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145719179] [2024-11-07 11:26:59,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:26:59,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 11:26:59,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:26:59,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 11:26:59,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-07 11:26:59,949 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 50 [2024-11-07 11:26:59,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 49 transitions, 160 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:26:59,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:26:59,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 50 [2024-11-07 11:26:59,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:27:00,981 INFO L124 PetriNetUnfolderBase]: 9996/13941 cut-off events. [2024-11-07 11:27:00,985 INFO L125 PetriNetUnfolderBase]: For 6351/6351 co-relation queries the response was YES. [2024-11-07 11:27:01,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34832 conditions, 13941 events. 9996/13941 cut-off events. For 6351/6351 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 76091 event pairs, 5933 based on Foata normal form. 0/12116 useless extension candidates. Maximal degree in co-relation 34810. Up to 7669 conditions per place. [2024-11-07 11:27:01,039 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 124 selfloop transitions, 8 changer transitions 0/135 dead transitions. [2024-11-07 11:27:01,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 135 transitions, 692 flow [2024-11-07 11:27:01,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 11:27:01,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 11:27:01,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2024-11-07 11:27:01,040 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.51 [2024-11-07 11:27:01,040 INFO L175 Difference]: Start difference. First operand has 50 places, 49 transitions, 160 flow. Second operand 6 states and 153 transitions. [2024-11-07 11:27:01,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 135 transitions, 692 flow [2024-11-07 11:27:01,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 135 transitions, 682 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 11:27:01,048 INFO L231 Difference]: Finished difference. Result has 58 places, 56 transitions, 226 flow [2024-11-07 11:27:01,048 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=226, PETRI_PLACES=58, PETRI_TRANSITIONS=56} [2024-11-07 11:27:01,048 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 13 predicate places. [2024-11-07 11:27:01,048 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 56 transitions, 226 flow [2024-11-07 11:27:01,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:01,049 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:27:01,049 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:27:01,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-07 11:27:01,049 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:27:01,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:27:01,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1360117292, now seen corresponding path program 1 times [2024-11-07 11:27:01,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:27:01,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487361305] [2024-11-07 11:27:01,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:27:01,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:27:01,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:27:01,175 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:27:01,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:27:01,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487361305] [2024-11-07 11:27:01,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487361305] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:27:01,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:27:01,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-07 11:27:01,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317847457] [2024-11-07 11:27:01,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:27:01,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 11:27:01,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:27:01,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 11:27:01,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-07 11:27:01,185 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 50 [2024-11-07 11:27:01,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 56 transitions, 226 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:01,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:27:01,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 50 [2024-11-07 11:27:01,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:27:01,927 INFO L124 PetriNetUnfolderBase]: 8807/12260 cut-off events. [2024-11-07 11:27:01,927 INFO L125 PetriNetUnfolderBase]: For 11268/11457 co-relation queries the response was YES. [2024-11-07 11:27:01,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33278 conditions, 12260 events. 8807/12260 cut-off events. For 11268/11457 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 64471 event pairs, 5542 based on Foata normal form. 189/10956 useless extension candidates. Maximal degree in co-relation 33251. Up to 7624 conditions per place. [2024-11-07 11:27:01,981 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 108 selfloop transitions, 8 changer transitions 0/120 dead transitions. [2024-11-07 11:27:01,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 120 transitions, 686 flow [2024-11-07 11:27:01,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 11:27:01,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 11:27:01,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-11-07 11:27:01,983 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-11-07 11:27:01,983 INFO L175 Difference]: Start difference. First operand has 58 places, 56 transitions, 226 flow. Second operand 6 states and 140 transitions. [2024-11-07 11:27:01,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 120 transitions, 686 flow [2024-11-07 11:27:01,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 120 transitions, 682 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-07 11:27:01,996 INFO L231 Difference]: Finished difference. Result has 65 places, 61 transitions, 279 flow [2024-11-07 11:27:01,996 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=279, PETRI_PLACES=65, PETRI_TRANSITIONS=61} [2024-11-07 11:27:01,997 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 20 predicate places. [2024-11-07 11:27:01,997 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 61 transitions, 279 flow [2024-11-07 11:27:01,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:01,997 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:27:01,997 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:27:01,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-07 11:27:01,997 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:27:01,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:27:01,998 INFO L85 PathProgramCache]: Analyzing trace with hash 292540957, now seen corresponding path program 1 times [2024-11-07 11:27:01,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:27:01,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192787606] [2024-11-07 11:27:01,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:27:01,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:27:02,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:27:02,192 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:27:02,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:27:02,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192787606] [2024-11-07 11:27:02,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192787606] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:27:02,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197424074] [2024-11-07 11:27:02,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:27:02,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:27:02,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:27:02,195 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:27:02,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-07 11:27:02,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:27:02,285 INFO L255 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-07 11:27:02,286 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:27:02,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2024-11-07 11:27:02,359 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:27:02,359 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:27:02,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 9 [2024-11-07 11:27:02,427 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:27:02,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197424074] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:27:02,428 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:27:02,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-07 11:27:02,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689871230] [2024-11-07 11:27:02,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:27:02,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-07 11:27:02,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:27:02,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-07 11:27:02,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-07 11:27:02,458 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 50 [2024-11-07 11:27:02,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 61 transitions, 279 flow. Second operand has 15 states, 15 states have (on average 8.933333333333334) internal successors, (134), 15 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:02,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:27:02,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 50 [2024-11-07 11:27:02,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:27:03,997 INFO L124 PetriNetUnfolderBase]: 13231/18633 cut-off events. [2024-11-07 11:27:03,998 INFO L125 PetriNetUnfolderBase]: For 19078/19200 co-relation queries the response was YES. [2024-11-07 11:27:04,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53928 conditions, 18633 events. 13231/18633 cut-off events. For 19078/19200 co-relation queries the response was YES. Maximal size of possible extension queue 679. Compared 106860 event pairs, 7388 based on Foata normal form. 122/16531 useless extension candidates. Maximal degree in co-relation 53897. Up to 7669 conditions per place. [2024-11-07 11:27:04,094 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 136 selfloop transitions, 15 changer transitions 0/155 dead transitions. [2024-11-07 11:27:04,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 155 transitions, 951 flow [2024-11-07 11:27:04,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 11:27:04,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 11:27:04,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 161 transitions. [2024-11-07 11:27:04,098 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46 [2024-11-07 11:27:04,098 INFO L175 Difference]: Start difference. First operand has 65 places, 61 transitions, 279 flow. Second operand 7 states and 161 transitions. [2024-11-07 11:27:04,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 155 transitions, 951 flow [2024-11-07 11:27:04,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 155 transitions, 946 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 11:27:04,176 INFO L231 Difference]: Finished difference. Result has 73 places, 68 transitions, 383 flow [2024-11-07 11:27:04,177 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=383, PETRI_PLACES=73, PETRI_TRANSITIONS=68} [2024-11-07 11:27:04,177 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 28 predicate places. [2024-11-07 11:27:04,177 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 68 transitions, 383 flow [2024-11-07 11:27:04,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.933333333333334) internal successors, (134), 15 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:04,177 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:27:04,178 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:27:04,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-07 11:27:04,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:27:04,382 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:27:04,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:27:04,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1332575869, now seen corresponding path program 1 times [2024-11-07 11:27:04,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:27:04,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19508151] [2024-11-07 11:27:04,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:27:04,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:27:04,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:27:04,525 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:27:04,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:27:04,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19508151] [2024-11-07 11:27:04,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19508151] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:27:04,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986088765] [2024-11-07 11:27:04,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:27:04,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:27:04,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:27:04,531 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:27:04,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-07 11:27:04,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:27:04,606 INFO L255 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-07 11:27:04,607 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:27:04,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2024-11-07 11:27:04,668 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:27:04,669 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:27:04,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 9 [2024-11-07 11:27:04,738 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:27:04,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986088765] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:27:04,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:27:04,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-07 11:27:04,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874125660] [2024-11-07 11:27:04,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:27:04,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-07 11:27:04,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:27:04,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-07 11:27:04,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-07 11:27:04,774 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 50 [2024-11-07 11:27:04,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 68 transitions, 383 flow. Second operand has 15 states, 15 states have (on average 8.933333333333334) internal successors, (134), 15 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:04,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:27:04,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 50 [2024-11-07 11:27:04,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:27:05,950 INFO L124 PetriNetUnfolderBase]: 12016/16800 cut-off events. [2024-11-07 11:27:05,951 INFO L125 PetriNetUnfolderBase]: For 33328/33895 co-relation queries the response was YES. [2024-11-07 11:27:05,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53542 conditions, 16800 events. 12016/16800 cut-off events. For 33328/33895 co-relation queries the response was YES. Maximal size of possible extension queue 598. Compared 92886 event pairs, 7043 based on Foata normal form. 567/15452 useless extension candidates. Maximal degree in co-relation 53507. Up to 7624 conditions per place. [2024-11-07 11:27:06,052 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 120 selfloop transitions, 15 changer transitions 0/140 dead transitions. [2024-11-07 11:27:06,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 140 transitions, 1003 flow [2024-11-07 11:27:06,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 11:27:06,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 11:27:06,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 148 transitions. [2024-11-07 11:27:06,056 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4228571428571429 [2024-11-07 11:27:06,056 INFO L175 Difference]: Start difference. First operand has 73 places, 68 transitions, 383 flow. Second operand 7 states and 148 transitions. [2024-11-07 11:27:06,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 140 transitions, 1003 flow [2024-11-07 11:27:06,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 140 transitions, 980 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-07 11:27:06,120 INFO L231 Difference]: Finished difference. Result has 80 places, 73 transitions, 452 flow [2024-11-07 11:27:06,120 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=452, PETRI_PLACES=80, PETRI_TRANSITIONS=73} [2024-11-07 11:27:06,121 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 35 predicate places. [2024-11-07 11:27:06,121 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 73 transitions, 452 flow [2024-11-07 11:27:06,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.933333333333334) internal successors, (134), 15 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:06,121 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:27:06,121 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:27:06,153 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-07 11:27:06,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-07 11:27:06,322 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:27:06,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:27:06,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1929539554, now seen corresponding path program 2 times [2024-11-07 11:27:06,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:27:06,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097233698] [2024-11-07 11:27:06,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:27:06,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:27:06,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:27:07,005 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:27:07,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:27:07,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097233698] [2024-11-07 11:27:07,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097233698] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:27:07,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878285339] [2024-11-07 11:27:07,006 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:27:07,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:27:07,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:27:07,010 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:27:07,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-07 11:27:07,103 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:27:07,103 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:27:07,104 INFO L255 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-07 11:27:07,106 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:27:07,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-07 11:27:07,683 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:27:07,684 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:27:07,841 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:27:07,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 17 [2024-11-07 11:27:08,072 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:27:08,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878285339] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:27:08,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:27:08,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 12] total 36 [2024-11-07 11:27:08,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296547646] [2024-11-07 11:27:08,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:27:08,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-07 11:27:08,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:27:08,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-07 11:27:08,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1174, Unknown=0, NotChecked=0, Total=1332 [2024-11-07 11:27:08,239 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 50 [2024-11-07 11:27:08,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 73 transitions, 452 flow. Second operand has 37 states, 37 states have (on average 7.351351351351352) internal successors, (272), 37 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:08,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:27:08,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 50 [2024-11-07 11:27:08,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:27:18,957 INFO L124 PetriNetUnfolderBase]: 65995/90515 cut-off events. [2024-11-07 11:27:18,958 INFO L125 PetriNetUnfolderBase]: For 133008/133008 co-relation queries the response was YES. [2024-11-07 11:27:19,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286251 conditions, 90515 events. 65995/90515 cut-off events. For 133008/133008 co-relation queries the response was YES. Maximal size of possible extension queue 2307. Compared 575324 event pairs, 23296 based on Foata normal form. 0/78955 useless extension candidates. Maximal degree in co-relation 222951. Up to 18894 conditions per place. [2024-11-07 11:27:19,618 INFO L140 encePairwiseOnDemand]: 31/50 looper letters, 987 selfloop transitions, 150 changer transitions 0/1139 dead transitions. [2024-11-07 11:27:19,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 1139 transitions, 6995 flow [2024-11-07 11:27:19,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-07 11:27:19,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2024-11-07 11:27:19,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 1289 transitions. [2024-11-07 11:27:19,623 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46035714285714285 [2024-11-07 11:27:19,623 INFO L175 Difference]: Start difference. First operand has 80 places, 73 transitions, 452 flow. Second operand 56 states and 1289 transitions. [2024-11-07 11:27:19,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 1139 transitions, 6995 flow [2024-11-07 11:27:21,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 1139 transitions, 6675 flow, removed 152 selfloop flow, removed 3 redundant places. [2024-11-07 11:27:21,616 INFO L231 Difference]: Finished difference. Result has 177 places, 269 transitions, 2269 flow [2024-11-07 11:27:21,616 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=2269, PETRI_PLACES=177, PETRI_TRANSITIONS=269} [2024-11-07 11:27:21,617 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 132 predicate places. [2024-11-07 11:27:21,617 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 269 transitions, 2269 flow [2024-11-07 11:27:21,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 7.351351351351352) internal successors, (272), 37 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:21,617 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:27:21,618 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:27:21,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-07 11:27:21,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:27:21,818 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:27:21,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:27:21,819 INFO L85 PathProgramCache]: Analyzing trace with hash 2143374978, now seen corresponding path program 2 times [2024-11-07 11:27:21,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:27:21,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344765076] [2024-11-07 11:27:21,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:27:21,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:27:21,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:27:22,274 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:27:22,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:27:22,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344765076] [2024-11-07 11:27:22,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344765076] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:27:22,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004793402] [2024-11-07 11:27:22,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:27:22,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:27:22,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:27:22,281 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:27:22,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-07 11:27:22,365 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:27:22,366 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:27:22,367 INFO L255 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-07 11:27:22,372 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:27:22,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-07 11:27:22,654 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:27:22,654 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:27:22,733 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:27:22,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 15 [2024-11-07 11:27:22,834 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:27:22,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004793402] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:27:22,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:27:22,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 31 [2024-11-07 11:27:22,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676614168] [2024-11-07 11:27:22,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:27:22,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-07 11:27:22,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:27:22,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-07 11:27:22,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=869, Unknown=0, NotChecked=0, Total=992 [2024-11-07 11:27:22,968 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 50 [2024-11-07 11:27:22,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 269 transitions, 2269 flow. Second operand has 32 states, 32 states have (on average 7.25) internal successors, (232), 32 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:22,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:27:22,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 50 [2024-11-07 11:27:22,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:27:35,686 INFO L124 PetriNetUnfolderBase]: 77900/106679 cut-off events. [2024-11-07 11:27:35,687 INFO L125 PetriNetUnfolderBase]: For 733746/733746 co-relation queries the response was YES. [2024-11-07 11:27:36,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 483000 conditions, 106679 events. 77900/106679 cut-off events. For 733746/733746 co-relation queries the response was YES. Maximal size of possible extension queue 2878. Compared 698235 event pairs, 21182 based on Foata normal form. 0/93900 useless extension candidates. Maximal degree in co-relation 431057. Up to 21904 conditions per place. [2024-11-07 11:27:37,196 INFO L140 encePairwiseOnDemand]: 33/50 looper letters, 614 selfloop transitions, 82 changer transitions 0/698 dead transitions. [2024-11-07 11:27:37,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 698 transitions, 7159 flow [2024-11-07 11:27:37,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-07 11:27:37,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-07 11:27:37,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 399 transitions. [2024-11-07 11:27:37,198 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46941176470588236 [2024-11-07 11:27:37,198 INFO L175 Difference]: Start difference. First operand has 177 places, 269 transitions, 2269 flow. Second operand 17 states and 399 transitions. [2024-11-07 11:27:37,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 698 transitions, 7159 flow [2024-11-07 11:27:55,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 698 transitions, 6769 flow, removed 194 selfloop flow, removed 1 redundant places. [2024-11-07 11:27:55,083 INFO L231 Difference]: Finished difference. Result has 201 places, 308 transitions, 2773 flow [2024-11-07 11:27:55,085 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1941, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2773, PETRI_PLACES=201, PETRI_TRANSITIONS=308} [2024-11-07 11:27:55,086 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 156 predicate places. [2024-11-07 11:27:55,087 INFO L471 AbstractCegarLoop]: Abstraction has has 201 places, 308 transitions, 2773 flow [2024-11-07 11:27:55,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 7.25) internal successors, (232), 32 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:55,088 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:27:55,088 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:27:55,101 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-07 11:27:55,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-07 11:27:55,292 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 11:27:55,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:27:55,293 INFO L85 PathProgramCache]: Analyzing trace with hash -907681486, now seen corresponding path program 3 times [2024-11-07 11:27:55,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:27:55,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094431732] [2024-11-07 11:27:55,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:27:55,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:27:55,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:27:55,834 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:27:55,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:27:55,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094431732] [2024-11-07 11:27:55,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094431732] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:27:55,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944984437] [2024-11-07 11:27:55,835 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 11:27:55,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:27:55,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:27:55,837 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:27:55,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-07 11:27:55,915 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-07 11:27:55,916 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:27:55,917 INFO L255 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-07 11:27:55,919 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:27:56,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-07 11:27:56,099 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:27:56,099 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:27:56,248 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 11:27:56,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2024-11-07 11:27:56,374 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 11:27:56,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944984437] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:27:56,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:27:56,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 12] total 36 [2024-11-07 11:27:56,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955446945] [2024-11-07 11:27:56,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:27:56,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-07 11:27:56,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:27:56,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-07 11:27:56,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1156, Unknown=0, NotChecked=0, Total=1332 [2024-11-07 11:27:56,469 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 50 [2024-11-07 11:27:56,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 308 transitions, 2773 flow. Second operand has 37 states, 37 states have (on average 7.297297297297297) internal successors, (270), 37 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:27:56,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:27:56,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 50 [2024-11-07 11:27:56,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand