./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-two-queue.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows 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-two-queue.wvr.c', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-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 ! overflow) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '32bit', '--witnessprinter.graph.data.programhash', '2b29a4c23931df07495caab7fd70ec22fec28fcea21b47e1c8eb19fb44a778d8'] 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-two-queue.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2b29a4c23931df07495caab7fd70ec22fec28fcea21b47e1c8eb19fb44a778d8 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 23:42:48,901 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 23:42:48,980 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-07 23:42:48,984 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 23:42:48,984 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 23:42:49,004 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 23:42:49,005 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 23:42:49,005 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 23:42:49,007 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 23:42:49,007 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 23:42:49,007 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 23:42:49,007 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 23:42:49,008 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 23:42:49,008 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 23:42:49,008 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 23:42:49,008 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 23:42:49,008 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 23:42:49,008 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 23:42:49,008 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 23:42:49,008 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 23:42:49,008 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 23:42:49,008 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 23:42:49,008 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 23:42:49,008 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 23:42:49,008 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 23:42:49,008 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-07 23:42:49,008 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-07 23:42:49,008 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 23:42:49,008 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 23:42:49,008 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 23:42:49,009 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 23:42:49,009 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 23:42:49,009 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 23:42:49,009 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 23:42:49,009 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 23:42:49,009 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 23:42:49,009 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 23:42:49,009 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 23:42:49,009 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 23:42:49,009 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 23:42:49,009 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 23:42:49,009 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 23:42:49,009 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 23:42:49,009 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 23:42:49,009 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 ! overflow) ) 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 -> 2b29a4c23931df07495caab7fd70ec22fec28fcea21b47e1c8eb19fb44a778d8 [2024-11-07 23:42:49,212 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 23:42:49,220 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 23:42:49,221 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 23:42:49,221 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 23:42:49,222 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 23:42:49,223 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-two-queue.wvr.c [2024-11-07 23:42:50,326 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 23:42:50,488 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 23:42:50,489 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-two-queue.wvr.c [2024-11-07 23:42:50,493 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/de16fadc0/b2203e81ca0146088ecc135d0b7447bb/FLAG31e577ca7 [2024-11-07 23:42:50,506 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/de16fadc0/b2203e81ca0146088ecc135d0b7447bb [2024-11-07 23:42:50,507 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 23:42:50,508 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 23:42:50,509 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 23:42:50,509 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 23:42:50,512 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 23:42:50,512 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:42:50" (1/1) ... [2024-11-07 23:42:50,513 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ecb7df0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:42:50, skipping insertion in model container [2024-11-07 23:42:50,513 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:42:50" (1/1) ... [2024-11-07 23:42:50,523 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 23:42:50,629 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 23:42:50,638 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 23:42:50,655 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 23:42:50,668 INFO L204 MainTranslator]: Completed translation [2024-11-07 23:42:50,668 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:42:50 WrapperNode [2024-11-07 23:42:50,669 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 23:42:50,669 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 23:42:50,669 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 23:42:50,670 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 23:42:50,675 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:42:50" (1/1) ... [2024-11-07 23:42:50,680 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:42:50" (1/1) ... [2024-11-07 23:42:50,701 INFO L138 Inliner]: procedures = 23, calls = 34, calls flagged for inlining = 14, calls inlined = 16, statements flattened = 216 [2024-11-07 23:42:50,703 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 23:42:50,704 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 23:42:50,704 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 23:42:50,704 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 23:42:50,711 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:42:50" (1/1) ... [2024-11-07 23:42:50,711 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:42:50" (1/1) ... [2024-11-07 23:42:50,717 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:42:50" (1/1) ... [2024-11-07 23:42:50,737 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 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 23:42:50,737 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:42:50" (1/1) ... [2024-11-07 23:42:50,737 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:42:50" (1/1) ... [2024-11-07 23:42:50,741 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:42:50" (1/1) ... [2024-11-07 23:42:50,743 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:42:50" (1/1) ... [2024-11-07 23:42:50,744 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:42:50" (1/1) ... [2024-11-07 23:42:50,745 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:42:50" (1/1) ... [2024-11-07 23:42:50,746 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 23:42:50,748 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 23:42:50,749 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 23:42:50,749 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 23:42:50,749 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:42:50" (1/1) ... [2024-11-07 23:42:50,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 23:42:50,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:42:50,770 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 23:42:50,771 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 23:42:50,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 23:42:50,787 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-07 23:42:50,787 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-07 23:42:50,788 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-07 23:42:50,788 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-07 23:42:50,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 23:42:50,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-07 23:42:50,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-07 23:42:50,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-07 23:42:50,788 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-07 23:42:50,788 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-07 23:42:50,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-07 23:42:50,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 23:42:50,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 23:42:50,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-07 23:42:50,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-07 23:42:50,789 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 23:42:50,861 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 23:42:50,863 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 23:42:51,115 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 23:42:51,115 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 23:42:51,298 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 23:42:51,299 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-07 23:42:51,299 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:42:51 BoogieIcfgContainer [2024-11-07 23:42:51,299 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 23:42:51,300 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 23:42:51,300 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 23:42:51,304 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 23:42:51,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 11:42:50" (1/3) ... [2024-11-07 23:42:51,305 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20277b40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:42:51, skipping insertion in model container [2024-11-07 23:42:51,305 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:42:50" (2/3) ... [2024-11-07 23:42:51,306 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20277b40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:42:51, skipping insertion in model container [2024-11-07 23:42:51,306 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:42:51" (3/3) ... [2024-11-07 23:42:51,307 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-two-queue.wvr.c [2024-11-07 23:42:51,317 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 23:42:51,317 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2024-11-07 23:42:51,317 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 23:42:51,359 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-07 23:42:51,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 50 transitions, 114 flow [2024-11-07 23:42:51,408 INFO L124 PetriNetUnfolderBase]: 4/48 cut-off events. [2024-11-07 23:42:51,411 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 23:42:51,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 48 events. 4/48 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 127 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-11-07 23:42:51,414 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 50 transitions, 114 flow [2024-11-07 23:42:51,416 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 46 transitions, 101 flow [2024-11-07 23:42:51,424 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 23:42:51,435 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;@1484ed77, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 23:42:51,436 INFO L334 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2024-11-07 23:42:51,440 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 23:42:51,440 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-07 23:42:51,440 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 23:42:51,440 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:42:51,440 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-07 23:42:51,441 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-07 23:42:51,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:42:51,443 INFO L85 PathProgramCache]: Analyzing trace with hash 668136, now seen corresponding path program 1 times [2024-11-07 23:42:51,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:42:51,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635400133] [2024-11-07 23:42:51,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:42:51,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:42:51,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:42:51,619 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 23:42:51,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:42:51,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635400133] [2024-11-07 23:42:51,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635400133] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:42:51,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:42:51,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 23:42:51,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294211024] [2024-11-07 23:42:51,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:42:51,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:42:51,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:42:51,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:42:51,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:42:51,661 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-11-07 23:42:51,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 46 transitions, 101 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 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 23:42:51,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:42:51,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-11-07 23:42:51,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:42:51,807 INFO L124 PetriNetUnfolderBase]: 213/466 cut-off events. [2024-11-07 23:42:51,808 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-07 23:42:51,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 827 conditions, 466 events. 213/466 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2436 event pairs, 128 based on Foata normal form. 2/342 useless extension candidates. Maximal degree in co-relation 755. Up to 327 conditions per place. [2024-11-07 23:42:51,814 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 20 selfloop transitions, 6 changer transitions 0/40 dead transitions. [2024-11-07 23:42:51,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 40 transitions, 141 flow [2024-11-07 23:42:51,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:42:51,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:42:51,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2024-11-07 23:42:51,824 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48 [2024-11-07 23:42:51,825 INFO L175 Difference]: Start difference. First operand has 49 places, 46 transitions, 101 flow. Second operand 4 states and 96 transitions. [2024-11-07 23:42:51,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 40 transitions, 141 flow [2024-11-07 23:42:51,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 40 transitions, 136 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-07 23:42:51,831 INFO L231 Difference]: Finished difference. Result has 43 places, 40 transitions, 96 flow [2024-11-07 23:42:51,833 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=96, PETRI_PLACES=43, PETRI_TRANSITIONS=40} [2024-11-07 23:42:51,835 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, -6 predicate places. [2024-11-07 23:42:51,835 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 40 transitions, 96 flow [2024-11-07 23:42:51,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 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 23:42:51,835 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:42:51,835 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-07 23:42:51,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 23:42:51,835 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-07 23:42:51,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:42:51,836 INFO L85 PathProgramCache]: Analyzing trace with hash 20712876, now seen corresponding path program 1 times [2024-11-07 23:42:51,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:42:51,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991923313] [2024-11-07 23:42:51,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:42:51,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:42:51,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:42:51,901 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 23:42:51,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:42:51,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991923313] [2024-11-07 23:42:51,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991923313] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:42:51,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:42:51,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 23:42:51,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394013132] [2024-11-07 23:42:51,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:42:51,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:42:51,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:42:51,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:42:51,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:42:51,913 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-11-07 23:42:51,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 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 23:42:51,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:42:51,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-11-07 23:42:51,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:42:52,009 INFO L124 PetriNetUnfolderBase]: 215/474 cut-off events. [2024-11-07 23:42:52,009 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-07 23:42:52,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 843 conditions, 474 events. 215/474 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2465 event pairs, 128 based on Foata normal form. 2/352 useless extension candidates. Maximal degree in co-relation 795. Up to 336 conditions per place. [2024-11-07 23:42:52,013 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 25 selfloop transitions, 7 changer transitions 0/46 dead transitions. [2024-11-07 23:42:52,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 46 transitions, 182 flow [2024-11-07 23:42:52,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:42:52,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:42:52,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2024-11-07 23:42:52,014 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49 [2024-11-07 23:42:52,014 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 96 flow. Second operand 4 states and 98 transitions. [2024-11-07 23:42:52,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 46 transitions, 182 flow [2024-11-07 23:42:52,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 46 transitions, 160 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-07 23:42:52,016 INFO L231 Difference]: Finished difference. Result has 46 places, 46 transitions, 140 flow [2024-11-07 23:42:52,016 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=140, PETRI_PLACES=46, PETRI_TRANSITIONS=46} [2024-11-07 23:42:52,016 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, -3 predicate places. [2024-11-07 23:42:52,016 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 46 transitions, 140 flow [2024-11-07 23:42:52,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 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 23:42:52,016 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:42:52,017 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:42:52,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 23:42:52,017 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-07 23:42:52,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:42:52,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1428888319, now seen corresponding path program 1 times [2024-11-07 23:42:52,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:42:52,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150080365] [2024-11-07 23:42:52,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:42:52,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:42:52,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:42:52,154 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 23:42:52,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:42:52,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150080365] [2024-11-07 23:42:52,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150080365] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:42:52,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:42:52,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 23:42:52,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675659843] [2024-11-07 23:42:52,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:42:52,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:42:52,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:42:52,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:42:52,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:42:52,157 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-11-07 23:42:52,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 46 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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 23:42:52,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:42:52,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-11-07 23:42:52,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:42:52,262 INFO L124 PetriNetUnfolderBase]: 232/522 cut-off events. [2024-11-07 23:42:52,262 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-11-07 23:42:52,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 949 conditions, 522 events. 232/522 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2749 event pairs, 146 based on Foata normal form. 14/406 useless extension candidates. Maximal degree in co-relation 807. Up to 335 conditions per place. [2024-11-07 23:42:52,267 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 33 selfloop transitions, 4 changer transitions 2/55 dead transitions. [2024-11-07 23:42:52,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 55 transitions, 240 flow [2024-11-07 23:42:52,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:42:52,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:42:52,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2024-11-07 23:42:52,269 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-11-07 23:42:52,269 INFO L175 Difference]: Start difference. First operand has 46 places, 46 transitions, 140 flow. Second operand 4 states and 120 transitions. [2024-11-07 23:42:52,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 55 transitions, 240 flow [2024-11-07 23:42:52,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 55 transitions, 240 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 23:42:52,271 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 157 flow [2024-11-07 23:42:52,271 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=157, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2024-11-07 23:42:52,271 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 1 predicate places. [2024-11-07 23:42:52,271 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 157 flow [2024-11-07 23:42:52,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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 23:42:52,271 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:42:52,271 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-07 23:42:52,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 23:42:52,273 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-07 23:42:52,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:42:52,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1417338175, now seen corresponding path program 1 times [2024-11-07 23:42:52,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:42:52,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688451575] [2024-11-07 23:42:52,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:42:52,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:42:52,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:42:52,347 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:42:52,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:42:52,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688451575] [2024-11-07 23:42:52,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688451575] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:42:52,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269087723] [2024-11-07 23:42:52,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:42:52,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:42:52,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:42:52,349 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 23:42:52,350 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 23:42:52,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:42:52,404 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-07 23:42:52,406 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:42:52,431 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:42:52,431 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:42:52,464 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:42:52,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269087723] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:42:52,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:42:52,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-07 23:42:52,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158880050] [2024-11-07 23:42:52,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:42:52,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-07 23:42:52,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:42:52,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-07 23:42:52,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-07 23:42:52,485 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-11-07 23:42:52,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 157 flow. Second operand has 10 states, 10 states have (on average 17.0) internal successors, (170), 10 states have internal predecessors, (170), 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 23:42:52,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:42:52,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-11-07 23:42:52,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:42:52,650 INFO L124 PetriNetUnfolderBase]: 238/546 cut-off events. [2024-11-07 23:42:52,650 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-11-07 23:42:52,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1113 conditions, 546 events. 238/546 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2967 event pairs, 146 based on Foata normal form. 0/411 useless extension candidates. Maximal degree in co-relation 928. Up to 381 conditions per place. [2024-11-07 23:42:52,652 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 25 selfloop transitions, 25 changer transitions 0/64 dead transitions. [2024-11-07 23:42:52,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 64 transitions, 341 flow [2024-11-07 23:42:52,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 23:42:52,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-07 23:42:52,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 216 transitions. [2024-11-07 23:42:52,656 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.432 [2024-11-07 23:42:52,656 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 157 flow. Second operand 10 states and 216 transitions. [2024-11-07 23:42:52,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 64 transitions, 341 flow [2024-11-07 23:42:52,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 64 transitions, 335 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 23:42:52,659 INFO L231 Difference]: Finished difference. Result has 61 places, 64 transitions, 319 flow [2024-11-07 23:42:52,659 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=319, PETRI_PLACES=61, PETRI_TRANSITIONS=64} [2024-11-07 23:42:52,660 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 12 predicate places. [2024-11-07 23:42:52,660 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 64 transitions, 319 flow [2024-11-07 23:42:52,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.0) internal successors, (170), 10 states have internal predecessors, (170), 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 23:42:52,660 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:42:52,660 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:42:52,673 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 23:42:52,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:42:52,865 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-07 23:42:52,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:42:52,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1214008352, now seen corresponding path program 1 times [2024-11-07 23:42:52,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:42:52,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999983091] [2024-11-07 23:42:52,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:42:52,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:42:52,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:42:52,940 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 23:42:52,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:42:52,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999983091] [2024-11-07 23:42:52,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999983091] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:42:52,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:42:52,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 23:42:52,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674564543] [2024-11-07 23:42:52,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:42:52,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:42:52,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:42:52,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:42:52,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:42:52,941 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-11-07 23:42:52,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 64 transitions, 319 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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 23:42:52,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:42:52,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-11-07 23:42:52,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:42:53,034 INFO L124 PetriNetUnfolderBase]: 269/651 cut-off events. [2024-11-07 23:42:53,034 INFO L125 PetriNetUnfolderBase]: For 140/140 co-relation queries the response was YES. [2024-11-07 23:42:53,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1410 conditions, 651 events. 269/651 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3676 event pairs, 174 based on Foata normal form. 14/527 useless extension candidates. Maximal degree in co-relation 1314. Up to 396 conditions per place. [2024-11-07 23:42:53,036 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 65 selfloop transitions, 3 changer transitions 4/88 dead transitions. [2024-11-07 23:42:53,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 88 transitions, 595 flow [2024-11-07 23:42:53,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:42:53,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:42:53,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 123 transitions. [2024-11-07 23:42:53,037 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.615 [2024-11-07 23:42:53,037 INFO L175 Difference]: Start difference. First operand has 61 places, 64 transitions, 319 flow. Second operand 4 states and 123 transitions. [2024-11-07 23:42:53,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 88 transitions, 595 flow [2024-11-07 23:42:53,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 88 transitions, 501 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-11-07 23:42:53,041 INFO L231 Difference]: Finished difference. Result has 61 places, 64 transitions, 270 flow [2024-11-07 23:42:53,041 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=270, PETRI_PLACES=61, PETRI_TRANSITIONS=64} [2024-11-07 23:42:53,041 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 12 predicate places. [2024-11-07 23:42:53,041 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 64 transitions, 270 flow [2024-11-07 23:42:53,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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 23:42:53,041 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:42:53,041 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:42:53,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-07 23:42:53,041 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-07 23:42:53,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:42:53,042 INFO L85 PathProgramCache]: Analyzing trace with hash 147329721, now seen corresponding path program 1 times [2024-11-07 23:42:53,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:42:53,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160830672] [2024-11-07 23:42:53,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:42:53,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:42:53,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:42:53,150 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 23:42:53,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:42:53,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160830672] [2024-11-07 23:42:53,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160830672] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:42:53,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57671498] [2024-11-07 23:42:53,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:42:53,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:42:53,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:42:53,153 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 23:42:53,154 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 23:42:53,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:42:53,209 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-07 23:42:53,210 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:42:53,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 23:42:53,224 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 23:42:53,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57671498] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:42:53,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 23:42:53,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2024-11-07 23:42:53,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791702975] [2024-11-07 23:42:53,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:42:53,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 23:42:53,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:42:53,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 23:42:53,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-07 23:42:53,225 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-11-07 23:42:53,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 64 transitions, 270 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 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 23:42:53,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:42:53,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-11-07 23:42:53,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:42:53,294 INFO L124 PetriNetUnfolderBase]: 204/539 cut-off events. [2024-11-07 23:42:53,294 INFO L125 PetriNetUnfolderBase]: For 132/140 co-relation queries the response was YES. [2024-11-07 23:42:53,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1176 conditions, 539 events. 204/539 cut-off events. For 132/140 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2994 event pairs, 132 based on Foata normal form. 0/461 useless extension candidates. Maximal degree in co-relation 1092. Up to 382 conditions per place. [2024-11-07 23:42:53,296 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 45 selfloop transitions, 1 changer transitions 0/62 dead transitions. [2024-11-07 23:42:53,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 62 transitions, 354 flow [2024-11-07 23:42:53,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 23:42:53,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 23:42:53,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2024-11-07 23:42:53,297 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.56 [2024-11-07 23:42:53,297 INFO L175 Difference]: Start difference. First operand has 61 places, 64 transitions, 270 flow. Second operand 3 states and 84 transitions. [2024-11-07 23:42:53,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 62 transitions, 354 flow [2024-11-07 23:42:53,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 62 transitions, 342 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-07 23:42:53,301 INFO L231 Difference]: Finished difference. Result has 59 places, 62 transitions, 252 flow [2024-11-07 23:42:53,302 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=252, PETRI_PLACES=59, PETRI_TRANSITIONS=62} [2024-11-07 23:42:53,302 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 10 predicate places. [2024-11-07 23:42:53,303 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 62 transitions, 252 flow [2024-11-07 23:42:53,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 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 23:42:53,303 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:42:53,303 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:42:53,316 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 23:42:53,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:42:53,504 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-07 23:42:53,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:42:53,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1655825365, now seen corresponding path program 1 times [2024-11-07 23:42:53,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:42:53,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679277756] [2024-11-07 23:42:53,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:42:53,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:42:53,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:42:53,603 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 23:42:53,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:42:53,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679277756] [2024-11-07 23:42:53,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679277756] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:42:53,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245784099] [2024-11-07 23:42:53,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:42:53,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:42:53,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:42:53,606 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 23:42:53,607 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 23:42:53,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:42:53,661 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-07 23:42:53,662 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:42:53,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 23:42:53,677 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 23:42:53,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245784099] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:42:53,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 23:42:53,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-07 23:42:53,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763477683] [2024-11-07 23:42:53,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:42:53,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 23:42:53,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:42:53,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 23:42:53,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-07 23:42:53,678 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-11-07 23:42:53,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 62 transitions, 252 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 23:42:53,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:42:53,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-11-07 23:42:53,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:42:53,726 INFO L124 PetriNetUnfolderBase]: 150/435 cut-off events. [2024-11-07 23:42:53,726 INFO L125 PetriNetUnfolderBase]: For 113/116 co-relation queries the response was YES. [2024-11-07 23:42:53,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 927 conditions, 435 events. 150/435 cut-off events. For 113/116 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2312 event pairs, 96 based on Foata normal form. 0/403 useless extension candidates. Maximal degree in co-relation 912. Up to 298 conditions per place. [2024-11-07 23:42:53,728 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 42 selfloop transitions, 1 changer transitions 1/60 dead transitions. [2024-11-07 23:42:53,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 60 transitions, 332 flow [2024-11-07 23:42:53,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 23:42:53,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 23:42:53,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2024-11-07 23:42:53,729 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5466666666666666 [2024-11-07 23:42:53,729 INFO L175 Difference]: Start difference. First operand has 59 places, 62 transitions, 252 flow. Second operand 3 states and 82 transitions. [2024-11-07 23:42:53,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 60 transitions, 332 flow [2024-11-07 23:42:53,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 60 transitions, 331 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 23:42:53,732 INFO L231 Difference]: Finished difference. Result has 58 places, 59 transitions, 238 flow [2024-11-07 23:42:53,732 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=58, PETRI_TRANSITIONS=59} [2024-11-07 23:42:53,732 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 9 predicate places. [2024-11-07 23:42:53,732 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 59 transitions, 238 flow [2024-11-07 23:42:53,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 23:42:53,733 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:42:53,733 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-07 23:42:53,745 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 23:42:53,933 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 23:42:53,933 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-07 23:42:53,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:42:53,934 INFO L85 PathProgramCache]: Analyzing trace with hash 731807084, now seen corresponding path program 2 times [2024-11-07 23:42:53,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:42:53,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628539828] [2024-11-07 23:42:53,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:42:53,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:42:53,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:42:54,031 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:42:54,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:42:54,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628539828] [2024-11-07 23:42:54,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628539828] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:42:54,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30958815] [2024-11-07 23:42:54,031 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 23:42:54,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:42:54,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:42:54,033 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 23:42:54,034 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 23:42:54,079 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-07 23:42:54,079 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 23:42:54,079 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-07 23:42:54,080 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:42:54,122 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-07 23:42:54,122 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:42:54,146 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-07 23:42:54,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30958815] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:42:54,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:42:54,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-07 23:42:54,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901978721] [2024-11-07 23:42:54,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:42:54,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-07 23:42:54,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:42:54,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-07 23:42:54,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-07 23:42:54,174 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-11-07 23:42:54,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 59 transitions, 238 flow. Second operand has 14 states, 14 states have (on average 17.142857142857142) internal successors, (240), 14 states have internal predecessors, (240), 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 23:42:54,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:42:54,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-11-07 23:42:54,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:42:54,402 INFO L124 PetriNetUnfolderBase]: 132/378 cut-off events. [2024-11-07 23:42:54,402 INFO L125 PetriNetUnfolderBase]: For 158/161 co-relation queries the response was YES. [2024-11-07 23:42:54,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 816 conditions, 378 events. 132/378 cut-off events. For 158/161 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1889 event pairs, 75 based on Foata normal form. 4/349 useless extension candidates. Maximal degree in co-relation 800. Up to 217 conditions per place. [2024-11-07 23:42:54,404 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 17 selfloop transitions, 33 changer transitions 0/64 dead transitions. [2024-11-07 23:42:54,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 64 transitions, 357 flow [2024-11-07 23:42:54,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-07 23:42:54,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-07 23:42:54,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 437 transitions. [2024-11-07 23:42:54,407 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3641666666666667 [2024-11-07 23:42:54,407 INFO L175 Difference]: Start difference. First operand has 58 places, 59 transitions, 238 flow. Second operand 24 states and 437 transitions. [2024-11-07 23:42:54,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 64 transitions, 357 flow [2024-11-07 23:42:54,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 64 transitions, 356 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 23:42:54,409 INFO L231 Difference]: Finished difference. Result has 80 places, 64 transitions, 335 flow [2024-11-07 23:42:54,409 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=335, PETRI_PLACES=80, PETRI_TRANSITIONS=64} [2024-11-07 23:42:54,410 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 31 predicate places. [2024-11-07 23:42:54,410 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 64 transitions, 335 flow [2024-11-07 23:42:54,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.142857142857142) internal successors, (240), 14 states have internal predecessors, (240), 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 23:42:54,410 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:42:54,410 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:42:54,422 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 23:42:54,610 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 23:42:54,610 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-07 23:42:54,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:42:54,611 INFO L85 PathProgramCache]: Analyzing trace with hash -756417951, now seen corresponding path program 1 times [2024-11-07 23:42:54,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:42:54,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862033929] [2024-11-07 23:42:54,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:42:54,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:42:54,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:42:54,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 23:42:54,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:42:54,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862033929] [2024-11-07 23:42:54,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862033929] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:42:54,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:42:54,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 23:42:54,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946784789] [2024-11-07 23:42:54,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:42:54,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 23:42:54,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:42:54,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 23:42:54,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 23:42:54,646 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-11-07 23:42:54,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 64 transitions, 335 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 23:42:54,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:42:54,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-11-07 23:42:54,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:42:54,689 INFO L124 PetriNetUnfolderBase]: 122/345 cut-off events. [2024-11-07 23:42:54,689 INFO L125 PetriNetUnfolderBase]: For 169/169 co-relation queries the response was YES. [2024-11-07 23:42:54,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 829 conditions, 345 events. 122/345 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1620 event pairs, 40 based on Foata normal form. 6/325 useless extension candidates. Maximal degree in co-relation 810. Up to 124 conditions per place. [2024-11-07 23:42:54,691 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 52 selfloop transitions, 2 changer transitions 1/70 dead transitions. [2024-11-07 23:42:54,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 70 transitions, 462 flow [2024-11-07 23:42:54,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 23:42:54,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 23:42:54,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2024-11-07 23:42:54,692 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.58 [2024-11-07 23:42:54,692 INFO L175 Difference]: Start difference. First operand has 80 places, 64 transitions, 335 flow. Second operand 3 states and 87 transitions. [2024-11-07 23:42:54,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 70 transitions, 462 flow [2024-11-07 23:42:54,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 70 transitions, 365 flow, removed 10 selfloop flow, removed 12 redundant places. [2024-11-07 23:42:54,694 INFO L231 Difference]: Finished difference. Result has 71 places, 65 transitions, 252 flow [2024-11-07 23:42:54,694 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=252, PETRI_PLACES=71, PETRI_TRANSITIONS=65} [2024-11-07 23:42:54,694 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 22 predicate places. [2024-11-07 23:42:54,694 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 65 transitions, 252 flow [2024-11-07 23:42:54,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 23:42:54,695 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:42:54,695 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:42:54,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-07 23:42:54,695 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-07 23:42:54,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:42:54,695 INFO L85 PathProgramCache]: Analyzing trace with hash -2063574928, now seen corresponding path program 1 times [2024-11-07 23:42:54,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:42:54,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698365643] [2024-11-07 23:42:54,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:42:54,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:42:54,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:42:54,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 23:42:54,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:42:54,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698365643] [2024-11-07 23:42:54,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698365643] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:42:54,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:42:54,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 23:42:54,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431217255] [2024-11-07 23:42:54,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:42:54,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 23:42:54,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:42:54,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 23:42:54,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 23:42:54,740 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-11-07 23:42:54,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 65 transitions, 252 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 23:42:54,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:42:54,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-11-07 23:42:54,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:42:54,796 INFO L124 PetriNetUnfolderBase]: 104/305 cut-off events. [2024-11-07 23:42:54,796 INFO L125 PetriNetUnfolderBase]: For 148/148 co-relation queries the response was YES. [2024-11-07 23:42:54,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 726 conditions, 305 events. 104/305 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1293 event pairs, 42 based on Foata normal form. 5/292 useless extension candidates. Maximal degree in co-relation 708. Up to 117 conditions per place. [2024-11-07 23:42:54,797 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 53 selfloop transitions, 2 changer transitions 3/73 dead transitions. [2024-11-07 23:42:54,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 73 transitions, 394 flow [2024-11-07 23:42:54,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 23:42:54,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 23:42:54,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2024-11-07 23:42:54,799 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5933333333333334 [2024-11-07 23:42:54,799 INFO L175 Difference]: Start difference. First operand has 71 places, 65 transitions, 252 flow. Second operand 3 states and 89 transitions. [2024-11-07 23:42:54,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 73 transitions, 394 flow [2024-11-07 23:42:54,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 73 transitions, 387 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-07 23:42:54,800 INFO L231 Difference]: Finished difference. Result has 73 places, 66 transitions, 260 flow [2024-11-07 23:42:54,800 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=260, PETRI_PLACES=73, PETRI_TRANSITIONS=66} [2024-11-07 23:42:54,801 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 24 predicate places. [2024-11-07 23:42:54,801 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 66 transitions, 260 flow [2024-11-07 23:42:54,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 23:42:54,801 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:42:54,801 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1] [2024-11-07 23:42:54,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-07 23:42:54,801 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-07 23:42:54,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:42:54,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1733778148, now seen corresponding path program 1 times [2024-11-07 23:42:54,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:42:54,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505262311] [2024-11-07 23:42:54,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:42:54,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:42:54,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:42:54,952 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:42:54,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:42:54,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505262311] [2024-11-07 23:42:54,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505262311] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:42:54,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831127962] [2024-11-07 23:42:54,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:42:54,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:42:54,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:42:54,955 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 23:42:54,956 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 23:42:55,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:42:55,017 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-07 23:42:55,017 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:42:55,059 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:42:55,059 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:42:55,206 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:42:55,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831127962] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:42:55,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:42:55,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2024-11-07 23:42:55,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551408804] [2024-11-07 23:42:55,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:42:55,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-07 23:42:55,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:42:55,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-07 23:42:55,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2024-11-07 23:42:55,264 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-11-07 23:42:55,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 66 transitions, 260 flow. Second operand has 28 states, 28 states have (on average 17.071428571428573) internal successors, (478), 28 states have internal predecessors, (478), 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 23:42:55,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:42:55,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-11-07 23:42:55,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:42:55,531 INFO L124 PetriNetUnfolderBase]: 125/393 cut-off events. [2024-11-07 23:42:55,532 INFO L125 PetriNetUnfolderBase]: For 491/491 co-relation queries the response was YES. [2024-11-07 23:42:55,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1014 conditions, 393 events. 125/393 cut-off events. For 491/491 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1675 event pairs, 72 based on Foata normal form. 14/374 useless extension candidates. Maximal degree in co-relation 994. Up to 206 conditions per place. [2024-11-07 23:42:55,533 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 22 selfloop transitions, 72 changer transitions 0/108 dead transitions. [2024-11-07 23:42:55,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 108 transitions, 658 flow [2024-11-07 23:42:55,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-07 23:42:55,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-07 23:42:55,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 515 transitions. [2024-11-07 23:42:55,535 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39615384615384613 [2024-11-07 23:42:55,535 INFO L175 Difference]: Start difference. First operand has 73 places, 66 transitions, 260 flow. Second operand 26 states and 515 transitions. [2024-11-07 23:42:55,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 108 transitions, 658 flow [2024-11-07 23:42:55,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 108 transitions, 650 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-07 23:42:55,538 INFO L231 Difference]: Finished difference. Result has 103 places, 108 transitions, 658 flow [2024-11-07 23:42:55,538 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=658, PETRI_PLACES=103, PETRI_TRANSITIONS=108} [2024-11-07 23:42:55,539 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 54 predicate places. [2024-11-07 23:42:55,539 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 108 transitions, 658 flow [2024-11-07 23:42:55,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 17.071428571428573) internal successors, (478), 28 states have internal predecessors, (478), 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 23:42:55,539 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:42:55,539 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 23:42:55,553 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-07 23:42:55,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-07 23:42:55,740 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-07 23:42:55,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:42:55,740 INFO L85 PathProgramCache]: Analyzing trace with hash -755873469, now seen corresponding path program 1 times [2024-11-07 23:42:55,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:42:55,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179446656] [2024-11-07 23:42:55,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:42:55,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:42:55,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:42:56,135 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 23:42:56,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:42:56,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179446656] [2024-11-07 23:42:56,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179446656] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:42:56,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535503207] [2024-11-07 23:42:56,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:42:56,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:42:56,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:42:56,138 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 23:42:56,139 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 23:42:56,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:42:56,205 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-07 23:42:56,206 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:42:56,258 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-07 23:42:56,501 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-07 23:42:56,501 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 12 [2024-11-07 23:42:56,507 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 23:42:56,507 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:42:56,684 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 20 treesize of output 18 [2024-11-07 23:42:56,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 26 treesize of output 20 [2024-11-07 23:42:56,772 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 23:42:56,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535503207] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:42:56,772 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:42:56,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2024-11-07 23:42:56,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508104974] [2024-11-07 23:42:56,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:42:56,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-07 23:42:56,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:42:56,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-07 23:42:56,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=478, Unknown=0, NotChecked=0, Total=552 [2024-11-07 23:42:56,902 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-11-07 23:42:56,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 108 transitions, 658 flow. Second operand has 24 states, 24 states have (on average 13.791666666666666) internal successors, (331), 24 states have internal predecessors, (331), 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 23:42:56,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:42:56,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-11-07 23:42:56,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:42:57,762 INFO L124 PetriNetUnfolderBase]: 377/874 cut-off events. [2024-11-07 23:42:57,763 INFO L125 PetriNetUnfolderBase]: For 622/622 co-relation queries the response was YES. [2024-11-07 23:42:57,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2236 conditions, 874 events. 377/874 cut-off events. For 622/622 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 4567 event pairs, 63 based on Foata normal form. 0/818 useless extension candidates. Maximal degree in co-relation 2209. Up to 134 conditions per place. [2024-11-07 23:42:57,766 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 103 selfloop transitions, 81 changer transitions 11/205 dead transitions. [2024-11-07 23:42:57,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 205 transitions, 1330 flow [2024-11-07 23:42:57,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-07 23:42:57,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-07 23:42:57,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 372 transitions. [2024-11-07 23:42:57,768 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.372 [2024-11-07 23:42:57,768 INFO L175 Difference]: Start difference. First operand has 103 places, 108 transitions, 658 flow. Second operand 20 states and 372 transitions. [2024-11-07 23:42:57,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 205 transitions, 1330 flow [2024-11-07 23:42:57,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 205 transitions, 1145 flow, removed 54 selfloop flow, removed 12 redundant places. [2024-11-07 23:42:57,774 INFO L231 Difference]: Finished difference. Result has 113 places, 119 transitions, 682 flow [2024-11-07 23:42:57,775 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=682, PETRI_PLACES=113, PETRI_TRANSITIONS=119} [2024-11-07 23:42:57,775 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 64 predicate places. [2024-11-07 23:42:57,776 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 119 transitions, 682 flow [2024-11-07 23:42:57,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 13.791666666666666) internal successors, (331), 24 states have internal predecessors, (331), 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 23:42:57,776 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:42:57,776 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 23:42:57,789 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 23:42:57,977 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,SelfDestructingSolverStorable11 [2024-11-07 23:42:57,977 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-07 23:42:57,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:42:57,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1551120531, now seen corresponding path program 1 times [2024-11-07 23:42:57,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:42:57,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020098914] [2024-11-07 23:42:57,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:42:57,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:42:57,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:42:58,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:42:58,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:42:58,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020098914] [2024-11-07 23:42:58,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020098914] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:42:58,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187296830] [2024-11-07 23:42:58,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:42:58,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:42:58,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:42:58,434 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 23:42:58,434 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 23:42:58,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:42:58,501 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-07 23:42:58,502 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:42:58,559 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 23:42:58,582 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 23:42:58,582 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 23:42:58,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187296830] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:42:58,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 23:42:58,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 12 [2024-11-07 23:42:58,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594008491] [2024-11-07 23:42:58,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:42:58,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 23:42:58,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:42:58,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 23:42:58,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-11-07 23:42:58,598 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 50 [2024-11-07 23:42:58,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 119 transitions, 682 flow. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 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 23:42:58,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:42:58,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 50 [2024-11-07 23:42:58,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:42:58,781 INFO L124 PetriNetUnfolderBase]: 495/1129 cut-off events. [2024-11-07 23:42:58,781 INFO L125 PetriNetUnfolderBase]: For 951/975 co-relation queries the response was YES. [2024-11-07 23:42:58,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3020 conditions, 1129 events. 495/1129 cut-off events. For 951/975 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 6188 event pairs, 84 based on Foata normal form. 16/1096 useless extension candidates. Maximal degree in co-relation 2991. Up to 320 conditions per place. [2024-11-07 23:42:58,787 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 143 selfloop transitions, 7 changer transitions 5/172 dead transitions. [2024-11-07 23:42:58,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 172 transitions, 1211 flow [2024-11-07 23:42:58,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 23:42:58,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 23:42:58,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-11-07 23:42:58,789 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2024-11-07 23:42:58,789 INFO L175 Difference]: Start difference. First operand has 113 places, 119 transitions, 682 flow. Second operand 7 states and 180 transitions. [2024-11-07 23:42:58,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 172 transitions, 1211 flow [2024-11-07 23:42:58,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 172 transitions, 1182 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-07 23:42:58,796 INFO L231 Difference]: Finished difference. Result has 116 places, 124 transitions, 703 flow [2024-11-07 23:42:58,796 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=703, PETRI_PLACES=116, PETRI_TRANSITIONS=124} [2024-11-07 23:42:58,797 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 67 predicate places. [2024-11-07 23:42:58,797 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 124 transitions, 703 flow [2024-11-07 23:42:58,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 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 23:42:58,797 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:42:58,798 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:42:58,810 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-07 23:42:59,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:42:59,002 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-07 23:42:59,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:42:59,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1957671331, now seen corresponding path program 1 times [2024-11-07 23:42:59,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:42:59,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185024462] [2024-11-07 23:42:59,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:42:59,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:42:59,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:42:59,256 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 23:42:59,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:42:59,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185024462] [2024-11-07 23:42:59,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185024462] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:42:59,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457878492] [2024-11-07 23:42:59,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:42:59,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:42:59,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:42:59,258 INFO L229 MonitoredProcess]: Starting monitored process 9 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 23:42:59,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-07 23:42:59,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:42:59,319 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-07 23:42:59,320 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:42:59,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-07 23:42:59,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-07 23:42:59,412 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 23:42:59,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2024-11-07 23:42:59,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-07 23:42:59,520 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 23:42:59,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:42:59,547 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:43:00,014 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 23:43:00,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 42 [2024-11-07 23:43:00,027 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 23:43:00,028 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 62 treesize of output 54 [2024-11-07 23:43:00,037 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 23:43:00,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 38 treesize of output 34 [2024-11-07 23:43:00,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:43:00,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457878492] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:43:00,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:43:00,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 23 [2024-11-07 23:43:00,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111862374] [2024-11-07 23:43:00,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:43:00,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-07 23:43:00,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:43:00,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-07 23:43:00,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=512, Unknown=2, NotChecked=0, Total=600 [2024-11-07 23:43:00,439 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 50 [2024-11-07 23:43:00,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 124 transitions, 703 flow. Second operand has 25 states, 25 states have (on average 9.4) internal successors, (235), 25 states have internal predecessors, (235), 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 23:43:00,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:43:00,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 50 [2024-11-07 23:43:00,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:43:03,066 INFO L124 PetriNetUnfolderBase]: 2741/5152 cut-off events. [2024-11-07 23:43:03,066 INFO L125 PetriNetUnfolderBase]: For 3966/4064 co-relation queries the response was YES. [2024-11-07 23:43:03,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14450 conditions, 5152 events. 2741/5152 cut-off events. For 3966/4064 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 32873 event pairs, 371 based on Foata normal form. 154/4786 useless extension candidates. Maximal degree in co-relation 14418. Up to 1178 conditions per place. [2024-11-07 23:43:03,087 INFO L140 encePairwiseOnDemand]: 35/50 looper letters, 399 selfloop transitions, 161 changer transitions 35/603 dead transitions. [2024-11-07 23:43:03,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 603 transitions, 3948 flow [2024-11-07 23:43:03,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-07 23:43:03,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2024-11-07 23:43:03,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 694 transitions. [2024-11-07 23:43:03,091 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3017391304347826 [2024-11-07 23:43:03,091 INFO L175 Difference]: Start difference. First operand has 116 places, 124 transitions, 703 flow. Second operand 46 states and 694 transitions. [2024-11-07 23:43:03,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 603 transitions, 3948 flow [2024-11-07 23:43:03,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 603 transitions, 3944 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 23:43:03,109 INFO L231 Difference]: Finished difference. Result has 185 places, 260 transitions, 2219 flow [2024-11-07 23:43:03,110 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=701, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=2219, PETRI_PLACES=185, PETRI_TRANSITIONS=260} [2024-11-07 23:43:03,110 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 136 predicate places. [2024-11-07 23:43:03,110 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 260 transitions, 2219 flow [2024-11-07 23:43:03,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 9.4) internal successors, (235), 25 states have internal predecessors, (235), 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 23:43:03,110 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:43:03,110 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:43:03,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-07 23:43:03,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:43:03,311 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-07 23:43:03,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:43:03,311 INFO L85 PathProgramCache]: Analyzing trace with hash -138230339, now seen corresponding path program 1 times [2024-11-07 23:43:03,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:43:03,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811078531] [2024-11-07 23:43:03,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:43:03,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:43:03,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:43:03,541 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 23:43:03,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:43:03,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811078531] [2024-11-07 23:43:03,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811078531] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:43:03,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486371823] [2024-11-07 23:43:03,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:43:03,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:43:03,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:43:03,544 INFO L229 MonitoredProcess]: Starting monitored process 10 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 23:43:03,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-07 23:43:03,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:43:03,608 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-07 23:43:03,611 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:43:03,684 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-07 23:43:03,784 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 23:43:03,804 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 23:43:03,804 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:43:03,983 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 38 treesize of output 34 [2024-11-07 23:43:03,988 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 23:43:03,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 46 treesize of output 42 [2024-11-07 23:43:04,073 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 23:43:04,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486371823] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:43:04,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:43:04,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2024-11-07 23:43:04,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438291992] [2024-11-07 23:43:04,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:43:04,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-07 23:43:04,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:43:04,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-07 23:43:04,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2024-11-07 23:43:04,367 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-11-07 23:43:04,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 260 transitions, 2219 flow. Second operand has 26 states, 26 states have (on average 14.73076923076923) internal successors, (383), 26 states have internal predecessors, (383), 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 23:43:04,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:43:04,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-11-07 23:43:04,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:43:05,959 INFO L124 PetriNetUnfolderBase]: 3226/6873 cut-off events. [2024-11-07 23:43:05,959 INFO L125 PetriNetUnfolderBase]: For 48967/49245 co-relation queries the response was YES. [2024-11-07 23:43:05,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28428 conditions, 6873 events. 3226/6873 cut-off events. For 48967/49245 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 55308 event pairs, 241 based on Foata normal form. 361/7169 useless extension candidates. Maximal degree in co-relation 28370. Up to 1227 conditions per place. [2024-11-07 23:43:06,008 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 333 selfloop transitions, 272 changer transitions 8/641 dead transitions. [2024-11-07 23:43:06,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 641 transitions, 6387 flow [2024-11-07 23:43:06,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-07 23:43:06,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-11-07 23:43:06,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 723 transitions. [2024-11-07 23:43:06,010 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38052631578947366 [2024-11-07 23:43:06,010 INFO L175 Difference]: Start difference. First operand has 185 places, 260 transitions, 2219 flow. Second operand 38 states and 723 transitions. [2024-11-07 23:43:06,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 641 transitions, 6387 flow [2024-11-07 23:43:06,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 641 transitions, 6126 flow, removed 126 selfloop flow, removed 4 redundant places. [2024-11-07 23:43:06,081 INFO L231 Difference]: Finished difference. Result has 228 places, 457 transitions, 4790 flow [2024-11-07 23:43:06,081 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2129, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=4790, PETRI_PLACES=228, PETRI_TRANSITIONS=457} [2024-11-07 23:43:06,082 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 179 predicate places. [2024-11-07 23:43:06,082 INFO L471 AbstractCegarLoop]: Abstraction has has 228 places, 457 transitions, 4790 flow [2024-11-07 23:43:06,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 14.73076923076923) internal successors, (383), 26 states have internal predecessors, (383), 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 23:43:06,082 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:43:06,082 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:43:06,094 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-07 23:43:06,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:43:06,283 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-07 23:43:06,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:43:06,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1515227615, now seen corresponding path program 2 times [2024-11-07 23:43:06,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:43:06,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245083575] [2024-11-07 23:43:06,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:43:06,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:43:06,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:43:07,429 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:43:07,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:43:07,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245083575] [2024-11-07 23:43:07,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245083575] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:43:07,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522432867] [2024-11-07 23:43:07,429 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 23:43:07,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:43:07,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:43:07,431 INFO L229 MonitoredProcess]: Starting monitored process 11 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 23:43:07,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-07 23:43:07,500 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-07 23:43:07,500 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 23:43:07,501 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-07 23:43:07,504 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:43:07,596 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 23:43:07,634 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-07 23:43:07,634 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 23:43:07,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522432867] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:43:07,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 23:43:07,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 18 [2024-11-07 23:43:07,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430171227] [2024-11-07 23:43:07,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:43:07,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 23:43:07,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:43:07,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 23:43:07,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2024-11-07 23:43:07,650 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 50 [2024-11-07 23:43:07,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 457 transitions, 4790 flow. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 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 23:43:07,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:43:07,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 50 [2024-11-07 23:43:07,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:43:08,653 INFO L124 PetriNetUnfolderBase]: 3474/7473 cut-off events. [2024-11-07 23:43:08,653 INFO L125 PetriNetUnfolderBase]: For 79468/79852 co-relation queries the response was YES. [2024-11-07 23:43:08,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36343 conditions, 7473 events. 3474/7473 cut-off events. For 79468/79852 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 61812 event pairs, 529 based on Foata normal form. 243/7663 useless extension candidates. Maximal degree in co-relation 36274. Up to 2431 conditions per place. [2024-11-07 23:43:08,707 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 425 selfloop transitions, 100 changer transitions 4/558 dead transitions. [2024-11-07 23:43:08,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 558 transitions, 6820 flow [2024-11-07 23:43:08,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 23:43:08,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 23:43:08,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-11-07 23:43:08,709 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5228571428571429 [2024-11-07 23:43:08,709 INFO L175 Difference]: Start difference. First operand has 228 places, 457 transitions, 4790 flow. Second operand 7 states and 183 transitions. [2024-11-07 23:43:08,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 558 transitions, 6820 flow [2024-11-07 23:43:08,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 558 transitions, 6319 flow, removed 186 selfloop flow, removed 11 redundant places. [2024-11-07 23:43:08,908 INFO L231 Difference]: Finished difference. Result has 221 places, 449 transitions, 4573 flow [2024-11-07 23:43:08,909 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=4173, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4573, PETRI_PLACES=221, PETRI_TRANSITIONS=449} [2024-11-07 23:43:08,909 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 172 predicate places. [2024-11-07 23:43:08,909 INFO L471 AbstractCegarLoop]: Abstraction has has 221 places, 449 transitions, 4573 flow [2024-11-07 23:43:08,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 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 23:43:08,910 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:43:08,910 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:43:08,921 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-07 23:43:09,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-07 23:43:09,110 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-07 23:43:09,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:43:09,111 INFO L85 PathProgramCache]: Analyzing trace with hash 2046179802, now seen corresponding path program 1 times [2024-11-07 23:43:09,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:43:09,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837938121] [2024-11-07 23:43:09,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:43:09,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:43:09,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:43:09,192 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 23:43:09,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:43:09,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837938121] [2024-11-07 23:43:09,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837938121] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:43:09,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357825821] [2024-11-07 23:43:09,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:43:09,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:43:09,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:43:09,194 INFO L229 MonitoredProcess]: Starting monitored process 12 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 23:43:09,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-07 23:43:09,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:43:09,259 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-07 23:43:09,259 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:43:09,377 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 23:43:09,378 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:43:09,460 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 23:43:09,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357825821] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:43:09,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:43:09,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-07 23:43:09,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913591416] [2024-11-07 23:43:09,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:43:09,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-07 23:43:09,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:43:09,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-07 23:43:09,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-07 23:43:09,500 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-11-07 23:43:09,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 449 transitions, 4573 flow. Second operand has 15 states, 15 states have (on average 18.266666666666666) internal successors, (274), 15 states have internal predecessors, (274), 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 23:43:09,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:43:09,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-11-07 23:43:09,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:43:10,106 INFO L124 PetriNetUnfolderBase]: 1986/4847 cut-off events. [2024-11-07 23:43:10,106 INFO L125 PetriNetUnfolderBase]: For 57873/58289 co-relation queries the response was YES. [2024-11-07 23:43:10,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22973 conditions, 4847 events. 1986/4847 cut-off events. For 57873/58289 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 40375 event pairs, 837 based on Foata normal form. 231/4999 useless extension candidates. Maximal degree in co-relation 22906. Up to 2022 conditions per place. [2024-11-07 23:43:10,134 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 336 selfloop transitions, 64 changer transitions 3/443 dead transitions. [2024-11-07 23:43:10,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 443 transitions, 5232 flow [2024-11-07 23:43:10,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-07 23:43:10,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-07 23:43:10,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 249 transitions. [2024-11-07 23:43:10,135 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.415 [2024-11-07 23:43:10,135 INFO L175 Difference]: Start difference. First operand has 221 places, 449 transitions, 4573 flow. Second operand 12 states and 249 transitions. [2024-11-07 23:43:10,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 443 transitions, 5232 flow [2024-11-07 23:43:10,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 443 transitions, 5087 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-11-07 23:43:10,240 INFO L231 Difference]: Finished difference. Result has 220 places, 375 transitions, 3819 flow [2024-11-07 23:43:10,241 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3688, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3819, PETRI_PLACES=220, PETRI_TRANSITIONS=375} [2024-11-07 23:43:10,241 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 171 predicate places. [2024-11-07 23:43:10,241 INFO L471 AbstractCegarLoop]: Abstraction has has 220 places, 375 transitions, 3819 flow [2024-11-07 23:43:10,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 18.266666666666666) internal successors, (274), 15 states have internal predecessors, (274), 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 23:43:10,241 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:43:10,241 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:43:10,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-07 23:43:10,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-07 23:43:10,442 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-07 23:43:10,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:43:10,442 INFO L85 PathProgramCache]: Analyzing trace with hash -369533526, now seen corresponding path program 2 times [2024-11-07 23:43:10,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:43:10,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848905572] [2024-11-07 23:43:10,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:43:10,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:43:10,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:43:10,971 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 23:43:10,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:43:10,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848905572] [2024-11-07 23:43:10,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848905572] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:43:10,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140738754] [2024-11-07 23:43:10,971 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 23:43:10,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:43:10,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:43:10,973 INFO L229 MonitoredProcess]: Starting monitored process 13 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 23:43:10,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-07 23:43:11,039 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-07 23:43:11,040 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 23:43:11,040 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-07 23:43:11,041 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:43:11,125 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 23:43:11,154 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-07 23:43:11,154 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 23:43:11,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140738754] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:43:11,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 23:43:11,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 13 [2024-11-07 23:43:11,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138645008] [2024-11-07 23:43:11,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:43:11,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 23:43:11,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:43:11,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 23:43:11,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2024-11-07 23:43:11,171 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 50 [2024-11-07 23:43:11,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 375 transitions, 3819 flow. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 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 23:43:11,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:43:11,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 50 [2024-11-07 23:43:11,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:43:11,858 INFO L124 PetriNetUnfolderBase]: 2405/5352 cut-off events. [2024-11-07 23:43:11,858 INFO L125 PetriNetUnfolderBase]: For 54031/54177 co-relation queries the response was YES. [2024-11-07 23:43:11,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24970 conditions, 5352 events. 2405/5352 cut-off events. For 54031/54177 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 42303 event pairs, 305 based on Foata normal form. 122/5414 useless extension candidates. Maximal degree in co-relation 24904. Up to 2696 conditions per place. [2024-11-07 23:43:11,893 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 348 selfloop transitions, 64 changer transitions 5/443 dead transitions. [2024-11-07 23:43:11,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 443 transitions, 5658 flow [2024-11-07 23:43:11,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 23:43:11,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 23:43:11,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-11-07 23:43:11,894 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-07 23:43:11,894 INFO L175 Difference]: Start difference. First operand has 220 places, 375 transitions, 3819 flow. Second operand 7 states and 175 transitions. [2024-11-07 23:43:11,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 443 transitions, 5658 flow [2024-11-07 23:43:12,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 443 transitions, 5517 flow, removed 41 selfloop flow, removed 10 redundant places. [2024-11-07 23:43:12,031 INFO L231 Difference]: Finished difference. Result has 216 places, 374 transitions, 3856 flow [2024-11-07 23:43:12,031 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3728, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3856, PETRI_PLACES=216, PETRI_TRANSITIONS=374} [2024-11-07 23:43:12,032 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 167 predicate places. [2024-11-07 23:43:12,032 INFO L471 AbstractCegarLoop]: Abstraction has has 216 places, 374 transitions, 3856 flow [2024-11-07 23:43:12,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 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 23:43:12,032 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:43:12,032 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:43:12,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-07 23:43:12,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-07 23:43:12,232 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-07 23:43:12,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:43:12,233 INFO L85 PathProgramCache]: Analyzing trace with hash 2067056519, now seen corresponding path program 1 times [2024-11-07 23:43:12,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:43:12,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414196855] [2024-11-07 23:43:12,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:43:12,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:43:12,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:43:12,317 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 23:43:12,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:43:12,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414196855] [2024-11-07 23:43:12,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414196855] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:43:12,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952156611] [2024-11-07 23:43:12,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:43:12,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:43:12,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:43:12,319 INFO L229 MonitoredProcess]: Starting monitored process 14 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 23:43:12,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-07 23:43:12,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:43:12,387 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-07 23:43:12,390 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:43:12,455 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 23:43:12,455 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:43:12,534 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 23:43:12,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952156611] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:43:12,536 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:43:12,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-07 23:43:12,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484490706] [2024-11-07 23:43:12,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:43:12,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-07 23:43:12,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:43:12,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-07 23:43:12,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-07 23:43:12,565 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-11-07 23:43:12,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 374 transitions, 3856 flow. Second operand has 15 states, 15 states have (on average 18.733333333333334) internal successors, (281), 15 states have internal predecessors, (281), 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 23:43:12,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:43:12,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-11-07 23:43:12,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:43:13,046 INFO L124 PetriNetUnfolderBase]: 1585/4044 cut-off events. [2024-11-07 23:43:13,046 INFO L125 PetriNetUnfolderBase]: For 38742/38983 co-relation queries the response was YES. [2024-11-07 23:43:13,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18740 conditions, 4044 events. 1585/4044 cut-off events. For 38742/38983 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 32760 event pairs, 748 based on Foata normal form. 118/4094 useless extension candidates. Maximal degree in co-relation 18676. Up to 1923 conditions per place. [2024-11-07 23:43:13,074 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 209 selfloop transitions, 99 changer transitions 24/371 dead transitions. [2024-11-07 23:43:13,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 371 transitions, 4476 flow [2024-11-07 23:43:13,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-07 23:43:13,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-07 23:43:13,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 175 transitions. [2024-11-07 23:43:13,075 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-11-07 23:43:13,075 INFO L175 Difference]: Start difference. First operand has 216 places, 374 transitions, 3856 flow. Second operand 8 states and 175 transitions. [2024-11-07 23:43:13,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 371 transitions, 4476 flow [2024-11-07 23:43:13,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 371 transitions, 4376 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-11-07 23:43:13,150 INFO L231 Difference]: Finished difference. Result has 220 places, 327 transitions, 3520 flow [2024-11-07 23:43:13,151 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3474, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3520, PETRI_PLACES=220, PETRI_TRANSITIONS=327} [2024-11-07 23:43:13,151 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 171 predicate places. [2024-11-07 23:43:13,151 INFO L471 AbstractCegarLoop]: Abstraction has has 220 places, 327 transitions, 3520 flow [2024-11-07 23:43:13,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 18.733333333333334) internal successors, (281), 15 states have internal predecessors, (281), 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 23:43:13,151 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:43:13,151 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:43:13,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-07 23:43:13,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:43:13,352 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-07 23:43:13,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:43:13,352 INFO L85 PathProgramCache]: Analyzing trace with hash 442907941, now seen corresponding path program 2 times [2024-11-07 23:43:13,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:43:13,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97343979] [2024-11-07 23:43:13,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:43:13,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:43:13,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:43:13,434 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 23:43:13,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:43:13,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97343979] [2024-11-07 23:43:13,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97343979] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:43:13,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824949770] [2024-11-07 23:43:13,435 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 23:43:13,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:43:13,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:43:13,437 INFO L229 MonitoredProcess]: Starting monitored process 15 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 23:43:13,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-07 23:43:13,509 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 23:43:13,509 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 23:43:13,510 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-07 23:43:13,511 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:43:13,624 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 23:43:13,625 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:43:13,803 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 23:43:13,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824949770] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:43:13,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:43:13,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 21 [2024-11-07 23:43:13,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276335020] [2024-11-07 23:43:13,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:43:13,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-07 23:43:13,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:43:13,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-07 23:43:13,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2024-11-07 23:43:13,846 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-11-07 23:43:13,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 327 transitions, 3520 flow. Second operand has 21 states, 21 states have (on average 18.285714285714285) internal successors, (384), 21 states have internal predecessors, (384), 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 23:43:13,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:43:13,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-11-07 23:43:13,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:43:14,297 INFO L124 PetriNetUnfolderBase]: 1298/3285 cut-off events. [2024-11-07 23:43:14,297 INFO L125 PetriNetUnfolderBase]: For 29527/29725 co-relation queries the response was YES. [2024-11-07 23:43:14,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15254 conditions, 3285 events. 1298/3285 cut-off events. For 29527/29725 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 25192 event pairs, 321 based on Foata normal form. 76/3311 useless extension candidates. Maximal degree in co-relation 15189. Up to 1709 conditions per place. [2024-11-07 23:43:14,313 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 156 selfloop transitions, 99 changer transitions 55/343 dead transitions. [2024-11-07 23:43:14,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 343 transitions, 4152 flow [2024-11-07 23:43:14,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 23:43:14,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-07 23:43:14,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 238 transitions. [2024-11-07 23:43:14,314 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43272727272727274 [2024-11-07 23:43:14,314 INFO L175 Difference]: Start difference. First operand has 220 places, 327 transitions, 3520 flow. Second operand 11 states and 238 transitions. [2024-11-07 23:43:14,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 343 transitions, 4152 flow [2024-11-07 23:43:14,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 343 transitions, 3918 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-11-07 23:43:14,356 INFO L231 Difference]: Finished difference. Result has 220 places, 283 transitions, 3036 flow [2024-11-07 23:43:14,357 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3116, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3036, PETRI_PLACES=220, PETRI_TRANSITIONS=283} [2024-11-07 23:43:14,357 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 171 predicate places. [2024-11-07 23:43:14,357 INFO L471 AbstractCegarLoop]: Abstraction has has 220 places, 283 transitions, 3036 flow [2024-11-07 23:43:14,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 18.285714285714285) internal successors, (384), 21 states have internal predecessors, (384), 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 23:43:14,357 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:43:14,357 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:43:14,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-07 23:43:14,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:43:14,561 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-07 23:43:14,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:43:14,562 INFO L85 PathProgramCache]: Analyzing trace with hash 755845743, now seen corresponding path program 2 times [2024-11-07 23:43:14,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:43:14,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423006428] [2024-11-07 23:43:14,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:43:14,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:43:14,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:43:14,643 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 23:43:14,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:43:14,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423006428] [2024-11-07 23:43:14,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423006428] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:43:14,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86214291] [2024-11-07 23:43:14,643 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 23:43:14,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:43:14,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:43:14,646 INFO L229 MonitoredProcess]: Starting monitored process 16 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 23:43:14,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-07 23:43:14,720 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 23:43:14,720 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 23:43:14,720 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-07 23:43:14,721 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:43:14,792 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 23:43:14,793 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:43:14,884 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 23:43:14,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86214291] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:43:14,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:43:14,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-07 23:43:14,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455577773] [2024-11-07 23:43:14,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:43:14,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-07 23:43:14,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:43:14,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-07 23:43:14,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-07 23:43:14,919 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-11-07 23:43:14,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 283 transitions, 3036 flow. Second operand has 15 states, 15 states have (on average 18.333333333333332) internal successors, (275), 15 states have internal predecessors, (275), 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 23:43:14,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:43:14,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-11-07 23:43:14,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:43:15,254 INFO L124 PetriNetUnfolderBase]: 944/2321 cut-off events. [2024-11-07 23:43:15,254 INFO L125 PetriNetUnfolderBase]: For 24772/25058 co-relation queries the response was YES. [2024-11-07 23:43:15,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11152 conditions, 2321 events. 944/2321 cut-off events. For 24772/25058 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 15824 event pairs, 244 based on Foata normal form. 64/2347 useless extension candidates. Maximal degree in co-relation 11086. Up to 1056 conditions per place. [2024-11-07 23:43:15,267 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 119 selfloop transitions, 64 changer transitions 78/285 dead transitions. [2024-11-07 23:43:15,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 285 transitions, 3425 flow [2024-11-07 23:43:15,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-07 23:43:15,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-07 23:43:15,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 275 transitions. [2024-11-07 23:43:15,268 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4230769230769231 [2024-11-07 23:43:15,268 INFO L175 Difference]: Start difference. First operand has 220 places, 283 transitions, 3036 flow. Second operand 13 states and 275 transitions. [2024-11-07 23:43:15,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 285 transitions, 3425 flow [2024-11-07 23:43:15,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 285 transitions, 3116 flow, removed 49 selfloop flow, removed 17 redundant places. [2024-11-07 23:43:15,300 INFO L231 Difference]: Finished difference. Result has 192 places, 203 transitions, 2046 flow [2024-11-07 23:43:15,300 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2380, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2046, PETRI_PLACES=192, PETRI_TRANSITIONS=203} [2024-11-07 23:43:15,300 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 143 predicate places. [2024-11-07 23:43:15,301 INFO L471 AbstractCegarLoop]: Abstraction has has 192 places, 203 transitions, 2046 flow [2024-11-07 23:43:15,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 18.333333333333332) internal successors, (275), 15 states have internal predecessors, (275), 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 23:43:15,301 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:43:15,301 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:43:15,313 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-07 23:43:15,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:43:15,501 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-07 23:43:15,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:43:15,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1694712449, now seen corresponding path program 1 times [2024-11-07 23:43:15,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:43:15,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980165644] [2024-11-07 23:43:15,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:43:15,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:43:15,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:43:15,538 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-07 23:43:15,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:43:15,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980165644] [2024-11-07 23:43:15,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980165644] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:43:15,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:43:15,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 23:43:15,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659080104] [2024-11-07 23:43:15,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:43:15,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:43:15,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:43:15,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:43:15,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:43:15,540 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-11-07 23:43:15,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 203 transitions, 2046 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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 23:43:15,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:43:15,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-11-07 23:43:15,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:43:15,714 INFO L124 PetriNetUnfolderBase]: 778/1898 cut-off events. [2024-11-07 23:43:15,714 INFO L125 PetriNetUnfolderBase]: For 12283/12600 co-relation queries the response was YES. [2024-11-07 23:43:15,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8330 conditions, 1898 events. 778/1898 cut-off events. For 12283/12600 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 12057 event pairs, 248 based on Foata normal form. 72/1912 useless extension candidates. Maximal degree in co-relation 8275. Up to 597 conditions per place. [2024-11-07 23:43:15,724 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 203 selfloop transitions, 12 changer transitions 0/240 dead transitions. [2024-11-07 23:43:15,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 240 transitions, 2785 flow [2024-11-07 23:43:15,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:43:15,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:43:15,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2024-11-07 23:43:15,725 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-11-07 23:43:15,725 INFO L175 Difference]: Start difference. First operand has 192 places, 203 transitions, 2046 flow. Second operand 4 states and 120 transitions. [2024-11-07 23:43:15,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 240 transitions, 2785 flow [2024-11-07 23:43:15,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 240 transitions, 2579 flow, removed 39 selfloop flow, removed 18 redundant places. [2024-11-07 23:43:15,739 INFO L231 Difference]: Finished difference. Result has 164 places, 201 transitions, 1909 flow [2024-11-07 23:43:15,739 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1778, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1909, PETRI_PLACES=164, PETRI_TRANSITIONS=201} [2024-11-07 23:43:15,740 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 115 predicate places. [2024-11-07 23:43:15,740 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 201 transitions, 1909 flow [2024-11-07 23:43:15,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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 23:43:15,740 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:43:15,740 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:43:15,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-07 23:43:15,740 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-07 23:43:15,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:43:15,741 INFO L85 PathProgramCache]: Analyzing trace with hash 744012687, now seen corresponding path program 3 times [2024-11-07 23:43:15,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:43:15,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879487881] [2024-11-07 23:43:15,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:43:15,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:43:15,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:43:15,785 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-07 23:43:15,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:43:15,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879487881] [2024-11-07 23:43:15,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879487881] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:43:15,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:43:15,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 23:43:15,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85766564] [2024-11-07 23:43:15,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:43:15,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:43:15,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:43:15,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:43:15,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:43:15,787 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-11-07 23:43:15,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 201 transitions, 1909 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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 23:43:15,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:43:15,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-11-07 23:43:15,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:43:15,993 INFO L124 PetriNetUnfolderBase]: 939/2402 cut-off events. [2024-11-07 23:43:15,994 INFO L125 PetriNetUnfolderBase]: For 11463/11841 co-relation queries the response was YES. [2024-11-07 23:43:16,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9682 conditions, 2402 events. 939/2402 cut-off events. For 11463/11841 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 17223 event pairs, 335 based on Foata normal form. 89/2406 useless extension candidates. Maximal degree in co-relation 9635. Up to 778 conditions per place. [2024-11-07 23:43:16,005 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 200 selfloop transitions, 22 changer transitions 0/246 dead transitions. [2024-11-07 23:43:16,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 246 transitions, 2771 flow [2024-11-07 23:43:16,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:43:16,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:43:16,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2024-11-07 23:43:16,005 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.61 [2024-11-07 23:43:16,005 INFO L175 Difference]: Start difference. First operand has 164 places, 201 transitions, 1909 flow. Second operand 4 states and 122 transitions. [2024-11-07 23:43:16,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 246 transitions, 2771 flow [2024-11-07 23:43:16,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 246 transitions, 2747 flow, removed 12 selfloop flow, removed 0 redundant places. [2024-11-07 23:43:16,016 INFO L231 Difference]: Finished difference. Result has 168 places, 206 transitions, 2027 flow [2024-11-07 23:43:16,016 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1851, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2027, PETRI_PLACES=168, PETRI_TRANSITIONS=206} [2024-11-07 23:43:16,016 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 119 predicate places. [2024-11-07 23:43:16,017 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 206 transitions, 2027 flow [2024-11-07 23:43:16,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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 23:43:16,017 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:43:16,017 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:43:16,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-07 23:43:16,017 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-07 23:43:16,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:43:16,017 INFO L85 PathProgramCache]: Analyzing trace with hash -583904322, now seen corresponding path program 1 times [2024-11-07 23:43:16,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:43:16,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008449447] [2024-11-07 23:43:16,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:43:16,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:43:16,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:43:16,360 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 23:43:16,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:43:16,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008449447] [2024-11-07 23:43:16,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008449447] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:43:16,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398996803] [2024-11-07 23:43:16,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:43:16,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:43:16,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:43:16,362 INFO L229 MonitoredProcess]: Starting monitored process 17 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 23:43:16,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-07 23:43:16,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:43:16,436 INFO L255 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-07 23:43:16,439 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:43:16,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-07 23:43:16,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-07 23:43:16,607 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 23:43:16,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2024-11-07 23:43:16,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-07 23:43:16,767 INFO L349 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2024-11-07 23:43:16,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 21 [2024-11-07 23:43:17,952 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-07 23:43:17,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 17 [2024-11-07 23:43:18,000 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:43:18,000 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:43:35,852 INFO L349 Elim1Store]: treesize reduction 35, result has 63.2 percent of original size [2024-11-07 23:43:35,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 3081 treesize of output 2860 [2024-11-07 23:43:35,912 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 23:43:35,912 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 989 treesize of output 961 [2024-11-07 23:43:36,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 265 treesize of output 247 [2024-11-07 23:43:36,432 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 23:43:36,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 239 treesize of output 182 [2024-11-07 23:43:37,039 INFO L349 Elim1Store]: treesize reduction 5, result has 93.6 percent of original size [2024-11-07 23:43:37,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1707 treesize of output 1430 [2024-11-07 23:43:42,726 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:43:42,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398996803] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:43:42,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:43:42,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 21, 21] total 54 [2024-11-07 23:43:42,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143161254] [2024-11-07 23:43:42,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:43:42,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-07 23:43:42,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:43:42,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-07 23:43:42,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=2764, Unknown=4, NotChecked=0, Total=3080 [2024-11-07 23:43:46,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-07 23:43:50,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-07 23:43:55,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-07 23:43:59,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-07 23:44:03,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-07 23:44:07,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-07 23:44:07,327 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 50 [2024-11-07 23:44:07,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 206 transitions, 2027 flow. Second operand has 56 states, 56 states have (on average 5.982142857142857) internal successors, (335), 56 states have internal predecessors, (335), 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 23:44:07,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:44:07,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 50 [2024-11-07 23:44:07,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:44:16,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]