./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-figure1.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-figure1.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', 'facd7612076746f2d167aef7303c13ba7b66236eba7a99773acf1e3861338848'] 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-figure1.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 facd7612076746f2d167aef7303c13ba7b66236eba7a99773acf1e3861338848 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 23:40:05,281 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 23:40:05,327 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-07 23:40:05,331 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 23:40:05,331 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 23:40:05,345 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 23:40:05,345 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 23:40:05,346 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 23:40:05,346 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 23:40:05,346 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 23:40:05,346 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 23:40:05,346 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 23:40:05,346 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 23:40:05,346 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 23:40:05,347 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 23:40:05,347 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 23:40:05,347 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 23:40:05,347 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 23:40:05,347 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 23:40:05,347 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 23:40:05,347 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 23:40:05,347 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 23:40:05,347 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 23:40:05,347 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 23:40:05,347 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 23:40:05,348 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-07 23:40:05,348 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-07 23:40:05,348 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 23:40:05,348 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 23:40:05,348 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 23:40:05,348 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 23:40:05,348 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 23:40:05,348 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 23:40:05,348 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 23:40:05,348 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 23:40:05,348 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 23:40:05,349 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 23:40:05,349 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 23:40:05,349 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 23:40:05,349 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 23:40:05,349 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 23:40:05,349 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 23:40:05,349 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 23:40:05,349 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 23:40:05,349 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 -> facd7612076746f2d167aef7303c13ba7b66236eba7a99773acf1e3861338848 [2024-11-07 23:40:05,515 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 23:40:05,524 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 23:40:05,527 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 23:40:05,528 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 23:40:05,528 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 23:40:05,529 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-figure1.wvr.c [2024-11-07 23:40:06,770 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 23:40:06,983 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 23:40:06,985 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure1.wvr.c [2024-11-07 23:40:06,991 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9d616a038/130b5ca43e5b491881cea9e015bbc0ba/FLAG6bf3acbec [2024-11-07 23:40:07,340 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9d616a038/130b5ca43e5b491881cea9e015bbc0ba [2024-11-07 23:40:07,342 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 23:40:07,344 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 23:40:07,345 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 23:40:07,345 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 23:40:07,348 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 23:40:07,349 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:40:07" (1/1) ... [2024-11-07 23:40:07,350 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f60e229 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:40:07, skipping insertion in model container [2024-11-07 23:40:07,350 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:40:07" (1/1) ... [2024-11-07 23:40:07,362 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 23:40:07,484 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 23:40:07,490 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 23:40:07,504 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 23:40:07,519 INFO L204 MainTranslator]: Completed translation [2024-11-07 23:40:07,520 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:40:07 WrapperNode [2024-11-07 23:40:07,520 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 23:40:07,522 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 23:40:07,522 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 23:40:07,522 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 23:40:07,526 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:40:07" (1/1) ... [2024-11-07 23:40:07,530 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:40:07" (1/1) ... [2024-11-07 23:40:07,540 INFO L138 Inliner]: procedures = 18, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 63 [2024-11-07 23:40:07,541 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 23:40:07,541 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 23:40:07,541 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 23:40:07,541 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 23:40:07,547 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:40:07" (1/1) ... [2024-11-07 23:40:07,547 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:40:07" (1/1) ... [2024-11-07 23:40:07,548 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:40:07" (1/1) ... [2024-11-07 23:40:07,555 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-07 23:40:07,556 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:40:07" (1/1) ... [2024-11-07 23:40:07,556 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:40:07" (1/1) ... [2024-11-07 23:40:07,558 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:40:07" (1/1) ... [2024-11-07 23:40:07,560 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:40:07" (1/1) ... [2024-11-07 23:40:07,560 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:40:07" (1/1) ... [2024-11-07 23:40:07,561 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:40:07" (1/1) ... [2024-11-07 23:40:07,564 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 23:40:07,565 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 23:40:07,565 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 23:40:07,565 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 23:40:07,566 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:40:07" (1/1) ... [2024-11-07 23:40:07,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 23:40:07,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:40:07,590 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 23:40:07,594 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 23:40:07,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 23:40:07,610 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-07 23:40:07,610 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-07 23:40:07,610 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-07 23:40:07,610 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-07 23:40:07,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 23:40:07,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 23:40:07,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 23:40:07,611 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 23:40:07,667 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 23:40:07,668 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 23:40:07,761 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 23:40:07,762 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 23:40:07,832 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 23:40:07,833 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-07 23:40:07,833 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:40:07 BoogieIcfgContainer [2024-11-07 23:40:07,833 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 23:40:07,835 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 23:40:07,835 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 23:40:07,838 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 23:40:07,838 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 11:40:07" (1/3) ... [2024-11-07 23:40:07,839 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39673c6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:40:07, skipping insertion in model container [2024-11-07 23:40:07,839 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:40:07" (2/3) ... [2024-11-07 23:40:07,839 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39673c6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:40:07, skipping insertion in model container [2024-11-07 23:40:07,839 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:40:07" (3/3) ... [2024-11-07 23:40:07,840 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-figure1.wvr.c [2024-11-07 23:40:07,849 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 23:40:07,850 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-07 23:40:07,850 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 23:40:07,883 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-07 23:40:07,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 32 transitions, 78 flow [2024-11-07 23:40:07,923 INFO L124 PetriNetUnfolderBase]: 2/30 cut-off events. [2024-11-07 23:40:07,924 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 23:40:07,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 30 events. 2/30 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 67 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-11-07 23:40:07,926 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 32 transitions, 78 flow [2024-11-07 23:40:07,928 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 28 transitions, 65 flow [2024-11-07 23:40:07,933 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 23:40:07,940 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;@218cee65, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 23:40:07,940 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-07 23:40:07,944 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 23:40:07,944 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-11-07 23:40:07,944 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-07 23:40:07,944 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:40:07,944 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-07 23:40:07,944 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-07 23:40:07,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:40:07,947 INFO L85 PathProgramCache]: Analyzing trace with hash 244277289, now seen corresponding path program 1 times [2024-11-07 23:40:07,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:40:07,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034620586] [2024-11-07 23:40:07,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:07,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:40:08,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:08,078 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 23:40:08,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:40:08,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034620586] [2024-11-07 23:40:08,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034620586] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:40:08,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:40:08,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 23:40:08,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687360662] [2024-11-07 23:40:08,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:40:08,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 23:40:08,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:40:08,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 23:40:08,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 23:40:08,104 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-07 23:40:08,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 23:40:08,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:40:08,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-07 23:40:08,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:40:08,205 INFO L124 PetriNetUnfolderBase]: 194/408 cut-off events. [2024-11-07 23:40:08,205 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-11-07 23:40:08,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 781 conditions, 408 events. 194/408 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1825 event pairs, 77 based on Foata normal form. 0/312 useless extension candidates. Maximal degree in co-relation 718. Up to 289 conditions per place. [2024-11-07 23:40:08,209 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 25 selfloop transitions, 2 changer transitions 2/36 dead transitions. [2024-11-07 23:40:08,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 145 flow [2024-11-07 23:40:08,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 23:40:08,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 23:40:08,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2024-11-07 23:40:08,217 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6145833333333334 [2024-11-07 23:40:08,218 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 65 flow. Second operand 3 states and 59 transitions. [2024-11-07 23:40:08,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 145 flow [2024-11-07 23:40:08,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 36 transitions, 137 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-07 23:40:08,222 INFO L231 Difference]: Finished difference. Result has 33 places, 29 transitions, 76 flow [2024-11-07 23:40:08,224 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=33, PETRI_TRANSITIONS=29} [2024-11-07 23:40:08,226 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2024-11-07 23:40:08,226 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 29 transitions, 76 flow [2024-11-07 23:40:08,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 23:40:08,226 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:40:08,226 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:40:08,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 23:40:08,227 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-07 23:40:08,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:40:08,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1472717044, now seen corresponding path program 1 times [2024-11-07 23:40:08,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:40:08,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467581156] [2024-11-07 23:40:08,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:08,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:40:08,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:08,275 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 23:40:08,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:40:08,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467581156] [2024-11-07 23:40:08,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467581156] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:40:08,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:40:08,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 23:40:08,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815051050] [2024-11-07 23:40:08,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:40:08,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:40:08,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:40:08,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:40:08,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:40:08,289 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-07 23:40:08,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 76 flow. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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 23:40:08,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:40:08,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-07 23:40:08,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:40:08,436 INFO L124 PetriNetUnfolderBase]: 298/571 cut-off events. [2024-11-07 23:40:08,436 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2024-11-07 23:40:08,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1208 conditions, 571 events. 298/571 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2638 event pairs, 127 based on Foata normal form. 18/490 useless extension candidates. Maximal degree in co-relation 733. Up to 420 conditions per place. [2024-11-07 23:40:08,441 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 45 selfloop transitions, 3 changer transitions 1/54 dead transitions. [2024-11-07 23:40:08,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 54 transitions, 232 flow [2024-11-07 23:40:08,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:40:08,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:40:08,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 79 transitions. [2024-11-07 23:40:08,443 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6171875 [2024-11-07 23:40:08,443 INFO L175 Difference]: Start difference. First operand has 33 places, 29 transitions, 76 flow. Second operand 4 states and 79 transitions. [2024-11-07 23:40:08,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 54 transitions, 232 flow [2024-11-07 23:40:08,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 54 transitions, 230 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 23:40:08,444 INFO L231 Difference]: Finished difference. Result has 37 places, 31 transitions, 98 flow [2024-11-07 23:40:08,444 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=98, PETRI_PLACES=37, PETRI_TRANSITIONS=31} [2024-11-07 23:40:08,445 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2024-11-07 23:40:08,445 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 31 transitions, 98 flow [2024-11-07 23:40:08,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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 23:40:08,445 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:40:08,446 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:40:08,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 23:40:08,446 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-07 23:40:08,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:40:08,448 INFO L85 PathProgramCache]: Analyzing trace with hash 2077733453, now seen corresponding path program 1 times [2024-11-07 23:40:08,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:40:08,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146473580] [2024-11-07 23:40:08,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:08,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:40:08,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:08,552 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 23:40:08,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:40:08,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146473580] [2024-11-07 23:40:08,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146473580] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:40:08,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:40:08,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 23:40:08,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735551520] [2024-11-07 23:40:08,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:40:08,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 23:40:08,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:40:08,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 23:40:08,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 23:40:08,554 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-07 23:40:08,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 31 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 23:40:08,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:40:08,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-07 23:40:08,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:40:08,649 INFO L124 PetriNetUnfolderBase]: 210/466 cut-off events. [2024-11-07 23:40:08,649 INFO L125 PetriNetUnfolderBase]: For 149/153 co-relation queries the response was YES. [2024-11-07 23:40:08,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1079 conditions, 466 events. 210/466 cut-off events. For 149/153 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2278 event pairs, 122 based on Foata normal form. 0/404 useless extension candidates. Maximal degree in co-relation 863. Up to 262 conditions per place. [2024-11-07 23:40:08,652 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 36 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2024-11-07 23:40:08,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 46 transitions, 228 flow [2024-11-07 23:40:08,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 23:40:08,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 23:40:08,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 63 transitions. [2024-11-07 23:40:08,656 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65625 [2024-11-07 23:40:08,656 INFO L175 Difference]: Start difference. First operand has 37 places, 31 transitions, 98 flow. Second operand 3 states and 63 transitions. [2024-11-07 23:40:08,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 46 transitions, 228 flow [2024-11-07 23:40:08,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 46 transitions, 225 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 23:40:08,658 INFO L231 Difference]: Finished difference. Result has 39 places, 32 transitions, 120 flow [2024-11-07 23:40:08,658 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=39, PETRI_TRANSITIONS=32} [2024-11-07 23:40:08,658 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 6 predicate places. [2024-11-07 23:40:08,658 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 32 transitions, 120 flow [2024-11-07 23:40:08,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 23:40:08,658 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:40:08,658 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:40:08,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 23:40:08,659 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-07 23:40:08,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:40:08,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1435994762, now seen corresponding path program 1 times [2024-11-07 23:40:08,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:40:08,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449387813] [2024-11-07 23:40:08,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:08,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:40:08,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:08,749 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 23:40:08,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:40:08,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449387813] [2024-11-07 23:40:08,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449387813] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:40:08,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:40:08,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 23:40:08,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666643431] [2024-11-07 23:40:08,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:40:08,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:40:08,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:40:08,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:40:08,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:40:08,750 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-07 23:40:08,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 120 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 23:40:08,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:40:08,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-07 23:40:08,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:40:08,841 INFO L124 PetriNetUnfolderBase]: 261/559 cut-off events. [2024-11-07 23:40:08,841 INFO L125 PetriNetUnfolderBase]: For 468/470 co-relation queries the response was YES. [2024-11-07 23:40:08,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1425 conditions, 559 events. 261/559 cut-off events. For 468/470 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2539 event pairs, 45 based on Foata normal form. 25/571 useless extension candidates. Maximal degree in co-relation 1203. Up to 236 conditions per place. [2024-11-07 23:40:08,845 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 39 selfloop transitions, 4 changer transitions 0/50 dead transitions. [2024-11-07 23:40:08,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 50 transitions, 265 flow [2024-11-07 23:40:08,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:40:08,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:40:08,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 79 transitions. [2024-11-07 23:40:08,847 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6171875 [2024-11-07 23:40:08,848 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 120 flow. Second operand 4 states and 79 transitions. [2024-11-07 23:40:08,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 50 transitions, 265 flow [2024-11-07 23:40:08,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 50 transitions, 255 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 23:40:08,850 INFO L231 Difference]: Finished difference. Result has 42 places, 34 transitions, 148 flow [2024-11-07 23:40:08,850 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=42, PETRI_TRANSITIONS=34} [2024-11-07 23:40:08,851 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 9 predicate places. [2024-11-07 23:40:08,851 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 34 transitions, 148 flow [2024-11-07 23:40:08,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 23:40:08,851 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:40:08,851 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:40:08,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 23:40:08,851 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-07 23:40:08,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:40:08,852 INFO L85 PathProgramCache]: Analyzing trace with hash -622260346, now seen corresponding path program 1 times [2024-11-07 23:40:08,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:40:08,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446379521] [2024-11-07 23:40:08,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:08,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:40:08,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:08,916 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 23:40:08,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:40:08,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446379521] [2024-11-07 23:40:08,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446379521] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:40:08,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032237001] [2024-11-07 23:40:08,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:08,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:40:08,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:40:08,922 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 23:40:08,923 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 23:40:08,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:08,980 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-07 23:40:08,982 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:40:09,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:40:09,035 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 23:40:09,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032237001] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:40:09,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 23:40:09,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2024-11-07 23:40:09,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699733554] [2024-11-07 23:40:09,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:40:09,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 23:40:09,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:40:09,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 23:40:09,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-07 23:40:09,040 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-07 23:40:09,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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 23:40:09,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:40:09,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-07 23:40:09,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:40:09,135 INFO L124 PetriNetUnfolderBase]: 231/515 cut-off events. [2024-11-07 23:40:09,136 INFO L125 PetriNetUnfolderBase]: For 607/609 co-relation queries the response was YES. [2024-11-07 23:40:09,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1307 conditions, 515 events. 231/515 cut-off events. For 607/609 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2394 event pairs, 191 based on Foata normal form. 24/524 useless extension candidates. Maximal degree in co-relation 1057. Up to 405 conditions per place. [2024-11-07 23:40:09,143 INFO L140 encePairwiseOnDemand]: 30/32 looper letters, 24 selfloop transitions, 1 changer transitions 0/32 dead transitions. [2024-11-07 23:40:09,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 32 transitions, 180 flow [2024-11-07 23:40:09,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 23:40:09,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 23:40:09,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 47 transitions. [2024-11-07 23:40:09,144 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-11-07 23:40:09,144 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 148 flow. Second operand 3 states and 47 transitions. [2024-11-07 23:40:09,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 32 transitions, 180 flow [2024-11-07 23:40:09,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 32 transitions, 174 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-07 23:40:09,145 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 126 flow [2024-11-07 23:40:09,145 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=40, PETRI_TRANSITIONS=32} [2024-11-07 23:40:09,146 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 7 predicate places. [2024-11-07 23:40:09,146 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 126 flow [2024-11-07 23:40:09,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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 23:40:09,146 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:40:09,146 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:40:09,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-07 23:40:09,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:40:09,347 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-07 23:40:09,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:40:09,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1306455368, now seen corresponding path program 1 times [2024-11-07 23:40:09,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:40:09,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253455448] [2024-11-07 23:40:09,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:09,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:40:09,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:09,407 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 23:40:09,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:40:09,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253455448] [2024-11-07 23:40:09,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253455448] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:40:09,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:40:09,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 23:40:09,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864635065] [2024-11-07 23:40:09,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:40:09,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:40:09,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:40:09,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:40:09,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:40:09,419 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-07 23:40:09,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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 23:40:09,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:40:09,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-07 23:40:09,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:40:09,615 INFO L124 PetriNetUnfolderBase]: 445/852 cut-off events. [2024-11-07 23:40:09,616 INFO L125 PetriNetUnfolderBase]: For 593/629 co-relation queries the response was YES. [2024-11-07 23:40:09,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2225 conditions, 852 events. 445/852 cut-off events. For 593/629 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3934 event pairs, 239 based on Foata normal form. 22/851 useless extension candidates. Maximal degree in co-relation 2213. Up to 522 conditions per place. [2024-11-07 23:40:09,625 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 53 selfloop transitions, 4 changer transitions 0/62 dead transitions. [2024-11-07 23:40:09,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 62 transitions, 378 flow [2024-11-07 23:40:09,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:40:09,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:40:09,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 72 transitions. [2024-11-07 23:40:09,629 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-11-07 23:40:09,629 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 126 flow. Second operand 4 states and 72 transitions. [2024-11-07 23:40:09,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 62 transitions, 378 flow [2024-11-07 23:40:09,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 62 transitions, 377 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 23:40:09,631 INFO L231 Difference]: Finished difference. Result has 44 places, 35 transitions, 154 flow [2024-11-07 23:40:09,631 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=154, PETRI_PLACES=44, PETRI_TRANSITIONS=35} [2024-11-07 23:40:09,631 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 11 predicate places. [2024-11-07 23:40:09,631 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 35 transitions, 154 flow [2024-11-07 23:40:09,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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 23:40:09,632 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:40:09,632 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-07 23:40:09,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-07 23:40:09,632 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-07 23:40:09,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:40:09,635 INFO L85 PathProgramCache]: Analyzing trace with hash -991728855, now seen corresponding path program 1 times [2024-11-07 23:40:09,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:40:09,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473990382] [2024-11-07 23:40:09,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:09,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:40:09,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:09,703 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:40:09,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:40:09,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473990382] [2024-11-07 23:40:09,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473990382] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:40:09,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145835413] [2024-11-07 23:40:09,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:09,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:40:09,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:40:09,705 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 23:40:09,706 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 23:40:09,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:09,747 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-07 23:40:09,747 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:40:09,783 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:40:09,783 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 23:40:09,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145835413] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:40:09,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 23:40:09,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-07 23:40:09,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688291377] [2024-11-07 23:40:09,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:40:09,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 23:40:09,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:40:09,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 23:40:09,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-07 23:40:09,798 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-07 23:40:09,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 35 transitions, 154 flow. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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 23:40:09,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:40:09,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-07 23:40:09,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:40:09,949 INFO L124 PetriNetUnfolderBase]: 425/834 cut-off events. [2024-11-07 23:40:09,949 INFO L125 PetriNetUnfolderBase]: For 811/847 co-relation queries the response was YES. [2024-11-07 23:40:09,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2397 conditions, 834 events. 425/834 cut-off events. For 811/847 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3832 event pairs, 48 based on Foata normal form. 26/834 useless extension candidates. Maximal degree in co-relation 2383. Up to 294 conditions per place. [2024-11-07 23:40:09,952 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 72 selfloop transitions, 6 changer transitions 1/84 dead transitions. [2024-11-07 23:40:09,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 84 transitions, 520 flow [2024-11-07 23:40:09,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 23:40:09,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 23:40:09,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 104 transitions. [2024-11-07 23:40:09,954 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-11-07 23:40:09,954 INFO L175 Difference]: Start difference. First operand has 44 places, 35 transitions, 154 flow. Second operand 6 states and 104 transitions. [2024-11-07 23:40:09,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 84 transitions, 520 flow [2024-11-07 23:40:09,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 84 transitions, 505 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 23:40:09,956 INFO L231 Difference]: Finished difference. Result has 47 places, 34 transitions, 159 flow [2024-11-07 23:40:09,956 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=159, PETRI_PLACES=47, PETRI_TRANSITIONS=34} [2024-11-07 23:40:09,957 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 14 predicate places. [2024-11-07 23:40:09,957 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 34 transitions, 159 flow [2024-11-07 23:40:09,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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 23:40:09,957 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:40:09,957 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-07 23:40:09,970 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 23:40:10,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:40:10,162 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-07 23:40:10,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:40:10,162 INFO L85 PathProgramCache]: Analyzing trace with hash -678823162, now seen corresponding path program 1 times [2024-11-07 23:40:10,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:40:10,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581541061] [2024-11-07 23:40:10,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:10,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:40:10,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:10,216 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:40:10,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:40:10,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581541061] [2024-11-07 23:40:10,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581541061] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:40:10,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797893315] [2024-11-07 23:40:10,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:10,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:40:10,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:40:10,220 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 23:40:10,225 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 23:40:10,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:10,275 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-07 23:40:10,276 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:40:10,307 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:40:10,307 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:40:10,342 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:40:10,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797893315] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:40:10,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:40:10,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-07 23:40:10,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821582253] [2024-11-07 23:40:10,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:40:10,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-07 23:40:10,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:40:10,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-07 23:40:10,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-07 23:40:10,362 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-07 23:40:10,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 34 transitions, 159 flow. Second operand has 12 states, 12 states have (on average 8.666666666666666) internal successors, (104), 12 states have internal predecessors, (104), 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 23:40:10,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:40:10,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-07 23:40:10,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:40:10,621 INFO L124 PetriNetUnfolderBase]: 889/1728 cut-off events. [2024-11-07 23:40:10,621 INFO L125 PetriNetUnfolderBase]: For 2206/2282 co-relation queries the response was YES. [2024-11-07 23:40:10,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5197 conditions, 1728 events. 889/1728 cut-off events. For 2206/2282 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 8595 event pairs, 136 based on Foata normal form. 78/1804 useless extension candidates. Maximal degree in co-relation 5183. Up to 606 conditions per place. [2024-11-07 23:40:10,629 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 136 selfloop transitions, 12 changer transitions 0/153 dead transitions. [2024-11-07 23:40:10,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 153 transitions, 973 flow [2024-11-07 23:40:10,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 23:40:10,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-07 23:40:10,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-11-07 23:40:10,630 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5875 [2024-11-07 23:40:10,630 INFO L175 Difference]: Start difference. First operand has 47 places, 34 transitions, 159 flow. Second operand 10 states and 188 transitions. [2024-11-07 23:40:10,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 153 transitions, 973 flow [2024-11-07 23:40:10,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 153 transitions, 946 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-07 23:40:10,634 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 228 flow [2024-11-07 23:40:10,634 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=228, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2024-11-07 23:40:10,635 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 22 predicate places. [2024-11-07 23:40:10,635 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 228 flow [2024-11-07 23:40:10,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.666666666666666) internal successors, (104), 12 states have internal predecessors, (104), 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 23:40:10,635 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:40:10,635 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:40:10,650 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 23:40:10,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:40:10,836 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-07 23:40:10,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:40:10,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1803619285, now seen corresponding path program 1 times [2024-11-07 23:40:10,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:40:10,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705709289] [2024-11-07 23:40:10,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:10,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:40:10,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:10,890 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 23:40:10,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:40:10,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705709289] [2024-11-07 23:40:10,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705709289] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:40:10,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63833958] [2024-11-07 23:40:10,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:10,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:40:10,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:40:10,895 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 23:40:10,901 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 23:40:10,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:10,950 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-07 23:40:10,951 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:40:10,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:40:10,984 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 23:40:10,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63833958] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:40:10,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 23:40:10,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2024-11-07 23:40:10,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411281644] [2024-11-07 23:40:10,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:40:10,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:40:10,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:40:10,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:40:10,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-07 23:40:10,985 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-07 23:40:10,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 228 flow. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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 23:40:10,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:40:10,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-07 23:40:10,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:40:11,117 INFO L124 PetriNetUnfolderBase]: 749/1530 cut-off events. [2024-11-07 23:40:11,117 INFO L125 PetriNetUnfolderBase]: For 2437/2469 co-relation queries the response was YES. [2024-11-07 23:40:11,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4697 conditions, 1530 events. 749/1530 cut-off events. For 2437/2469 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 7763 event pairs, 585 based on Foata normal form. 62/1589 useless extension candidates. Maximal degree in co-relation 4681. Up to 1240 conditions per place. [2024-11-07 23:40:11,124 INFO L140 encePairwiseOnDemand]: 30/32 looper letters, 35 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2024-11-07 23:40:11,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 42 transitions, 296 flow [2024-11-07 23:40:11,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 23:40:11,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 23:40:11,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 46 transitions. [2024-11-07 23:40:11,125 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-11-07 23:40:11,125 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 228 flow. Second operand 3 states and 46 transitions. [2024-11-07 23:40:11,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 42 transitions, 296 flow [2024-11-07 23:40:11,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 42 transitions, 286 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-07 23:40:11,129 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 216 flow [2024-11-07 23:40:11,129 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=216, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2024-11-07 23:40:11,129 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 21 predicate places. [2024-11-07 23:40:11,130 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 216 flow [2024-11-07 23:40:11,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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 23:40:11,130 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:40:11,130 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-07 23:40:11,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-07 23:40:11,334 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,SelfDestructingSolverStorable8 [2024-11-07 23:40:11,334 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-07 23:40:11,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:40:11,335 INFO L85 PathProgramCache]: Analyzing trace with hash 485978698, now seen corresponding path program 1 times [2024-11-07 23:40:11,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:40:11,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887515153] [2024-11-07 23:40:11,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:11,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:40:11,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:11,382 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:40:11,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:40:11,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887515153] [2024-11-07 23:40:11,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887515153] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:40:11,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784216969] [2024-11-07 23:40:11,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:11,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:40:11,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:40:11,385 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 23:40:11,386 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 23:40:11,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:11,419 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-07 23:40:11,419 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:40:11,441 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:40:11,441 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:40:11,485 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:40:11,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784216969] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:40:11,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:40:11,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-07 23:40:11,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837534804] [2024-11-07 23:40:11,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:40:11,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-07 23:40:11,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:40:11,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-07 23:40:11,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-07 23:40:11,486 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-07 23:40:11,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 216 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 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 23:40:11,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:40:11,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-07 23:40:11,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:40:11,745 INFO L124 PetriNetUnfolderBase]: 1462/3039 cut-off events. [2024-11-07 23:40:11,745 INFO L125 PetriNetUnfolderBase]: For 5330/5464 co-relation queries the response was YES. [2024-11-07 23:40:11,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9123 conditions, 3039 events. 1462/3039 cut-off events. For 5330/5464 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 17568 event pairs, 85 based on Foata normal form. 198/3236 useless extension candidates. Maximal degree in co-relation 9105. Up to 461 conditions per place. [2024-11-07 23:40:11,756 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 148 selfloop transitions, 14 changer transitions 2/170 dead transitions. [2024-11-07 23:40:11,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 170 transitions, 1165 flow [2024-11-07 23:40:11,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 23:40:11,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-07 23:40:11,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 191 transitions. [2024-11-07 23:40:11,757 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6631944444444444 [2024-11-07 23:40:11,757 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 216 flow. Second operand 9 states and 191 transitions. [2024-11-07 23:40:11,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 170 transitions, 1165 flow [2024-11-07 23:40:11,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 170 transitions, 1164 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 23:40:11,767 INFO L231 Difference]: Finished difference. Result has 67 places, 53 transitions, 354 flow [2024-11-07 23:40:11,767 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=354, PETRI_PLACES=67, PETRI_TRANSITIONS=53} [2024-11-07 23:40:11,768 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 34 predicate places. [2024-11-07 23:40:11,768 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 53 transitions, 354 flow [2024-11-07 23:40:11,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 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 23:40:11,768 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:40:11,768 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:40:11,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-07 23:40:11,972 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,SelfDestructingSolverStorable9 [2024-11-07 23:40:11,973 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-07 23:40:11,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:40:11,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1414210555, now seen corresponding path program 1 times [2024-11-07 23:40:11,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:40:11,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138375842] [2024-11-07 23:40:11,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:11,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:40:11,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:12,014 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:40:12,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:40:12,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138375842] [2024-11-07 23:40:12,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138375842] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:40:12,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971079475] [2024-11-07 23:40:12,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:12,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:40:12,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:40:12,016 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 23:40:12,017 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 23:40:12,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:12,052 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-07 23:40:12,053 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:40:12,081 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:40:12,081 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 23:40:12,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971079475] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:40:12,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 23:40:12,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-07 23:40:12,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078198976] [2024-11-07 23:40:12,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:40:12,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 23:40:12,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:40:12,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 23:40:12,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-07 23:40:12,089 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-07 23:40:12,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 53 transitions, 354 flow. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 23:40:12,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:40:12,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-07 23:40:12,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:40:12,358 INFO L124 PetriNetUnfolderBase]: 1600/3112 cut-off events. [2024-11-07 23:40:12,358 INFO L125 PetriNetUnfolderBase]: For 7192/7230 co-relation queries the response was YES. [2024-11-07 23:40:12,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10449 conditions, 3112 events. 1600/3112 cut-off events. For 7192/7230 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 17561 event pairs, 251 based on Foata normal form. 111/3111 useless extension candidates. Maximal degree in co-relation 10424. Up to 897 conditions per place. [2024-11-07 23:40:12,370 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 144 selfloop transitions, 7 changer transitions 0/155 dead transitions. [2024-11-07 23:40:12,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 155 transitions, 1446 flow [2024-11-07 23:40:12,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 23:40:12,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 23:40:12,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 96 transitions. [2024-11-07 23:40:12,374 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-07 23:40:12,374 INFO L175 Difference]: Start difference. First operand has 67 places, 53 transitions, 354 flow. Second operand 6 states and 96 transitions. [2024-11-07 23:40:12,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 155 transitions, 1446 flow [2024-11-07 23:40:12,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 155 transitions, 1389 flow, removed 27 selfloop flow, removed 1 redundant places. [2024-11-07 23:40:12,381 INFO L231 Difference]: Finished difference. Result has 70 places, 52 transitions, 350 flow [2024-11-07 23:40:12,382 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=350, PETRI_PLACES=70, PETRI_TRANSITIONS=52} [2024-11-07 23:40:12,382 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 37 predicate places. [2024-11-07 23:40:12,382 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 52 transitions, 350 flow [2024-11-07 23:40:12,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 23:40:12,382 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:40:12,382 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:40:12,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-07 23:40:12,583 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,SelfDestructingSolverStorable10 [2024-11-07 23:40:12,583 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-07 23:40:12,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:40:12,583 INFO L85 PathProgramCache]: Analyzing trace with hash -370936087, now seen corresponding path program 1 times [2024-11-07 23:40:12,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:40:12,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256925048] [2024-11-07 23:40:12,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:12,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:40:12,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:12,624 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 23:40:12,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:40:12,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256925048] [2024-11-07 23:40:12,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256925048] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:40:12,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328935953] [2024-11-07 23:40:12,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:12,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:40:12,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:40:12,626 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 23:40:12,627 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 23:40:12,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:12,664 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-07 23:40:12,664 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:40:12,710 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 23:40:12,711 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:40:12,750 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 23:40:12,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328935953] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:40:12,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:40:12,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-07 23:40:12,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977285743] [2024-11-07 23:40:12,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:40:12,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-07 23:40:12,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:40:12,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-07 23:40:12,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-07 23:40:12,766 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-07 23:40:12,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 52 transitions, 350 flow. Second operand has 12 states, 12 states have (on average 9.833333333333334) internal successors, (118), 12 states have internal predecessors, (118), 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 23:40:12,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:40:12,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-07 23:40:12,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:40:13,228 INFO L124 PetriNetUnfolderBase]: 2870/5405 cut-off events. [2024-11-07 23:40:13,228 INFO L125 PetriNetUnfolderBase]: For 13472/13578 co-relation queries the response was YES. [2024-11-07 23:40:13,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19155 conditions, 5405 events. 2870/5405 cut-off events. For 13472/13578 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 32193 event pairs, 629 based on Foata normal form. 243/5647 useless extension candidates. Maximal degree in co-relation 19130. Up to 1842 conditions per place. [2024-11-07 23:40:13,317 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 243 selfloop transitions, 13 changer transitions 6/266 dead transitions. [2024-11-07 23:40:13,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 266 transitions, 2462 flow [2024-11-07 23:40:13,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 23:40:13,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-07 23:40:13,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-11-07 23:40:13,318 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.528125 [2024-11-07 23:40:13,318 INFO L175 Difference]: Start difference. First operand has 70 places, 52 transitions, 350 flow. Second operand 10 states and 169 transitions. [2024-11-07 23:40:13,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 266 transitions, 2462 flow [2024-11-07 23:40:13,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 266 transitions, 2432 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-07 23:40:13,336 INFO L231 Difference]: Finished difference. Result has 78 places, 60 transitions, 413 flow [2024-11-07 23:40:13,336 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=413, PETRI_PLACES=78, PETRI_TRANSITIONS=60} [2024-11-07 23:40:13,337 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 45 predicate places. [2024-11-07 23:40:13,337 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 60 transitions, 413 flow [2024-11-07 23:40:13,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.833333333333334) internal successors, (118), 12 states have internal predecessors, (118), 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 23:40:13,338 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:40:13,338 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1] [2024-11-07 23:40:13,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-07 23:40:13,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:40:13,539 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-07 23:40:13,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:40:13,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1310678851, now seen corresponding path program 2 times [2024-11-07 23:40:13,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:40:13,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484469548] [2024-11-07 23:40:13,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:13,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:40:13,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:13,672 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:40:13,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:40:13,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484469548] [2024-11-07 23:40:13,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484469548] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:40:13,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458199310] [2024-11-07 23:40:13,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 23:40:13,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:40:13,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:40:13,677 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 23:40:13,680 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 23:40:13,712 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-07 23:40:13,712 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 23:40:13,712 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-07 23:40:13,713 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:40:13,779 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-07 23:40:13,780 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:40:13,835 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-07 23:40:13,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458199310] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:40:13,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:40:13,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 14 [2024-11-07 23:40:13,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573412837] [2024-11-07 23:40:13,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:40:13,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-07 23:40:13,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:40:13,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-07 23:40:13,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-07 23:40:13,868 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-11-07 23:40:13,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 60 transitions, 413 flow. Second operand has 15 states, 15 states have (on average 8.266666666666667) internal successors, (124), 15 states have internal predecessors, (124), 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 23:40:13,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:40:13,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-11-07 23:40:13,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:40:14,632 INFO L124 PetriNetUnfolderBase]: 4196/7409 cut-off events. [2024-11-07 23:40:14,632 INFO L125 PetriNetUnfolderBase]: For 22314/22394 co-relation queries the response was YES. [2024-11-07 23:40:14,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26048 conditions, 7409 events. 4196/7409 cut-off events. For 22314/22394 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 43102 event pairs, 274 based on Foata normal form. 310/7719 useless extension candidates. Maximal degree in co-relation 26021. Up to 1667 conditions per place. [2024-11-07 23:40:14,669 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 304 selfloop transitions, 18 changer transitions 0/325 dead transitions. [2024-11-07 23:40:14,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 325 transitions, 2699 flow [2024-11-07 23:40:14,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-07 23:40:14,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-07 23:40:14,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 243 transitions. [2024-11-07 23:40:14,671 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.50625 [2024-11-07 23:40:14,671 INFO L175 Difference]: Start difference. First operand has 78 places, 60 transitions, 413 flow. Second operand 15 states and 243 transitions. [2024-11-07 23:40:14,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 325 transitions, 2699 flow [2024-11-07 23:40:14,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 325 transitions, 2564 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-11-07 23:40:14,699 INFO L231 Difference]: Finished difference. Result has 86 places, 64 transitions, 453 flow [2024-11-07 23:40:14,699 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=453, PETRI_PLACES=86, PETRI_TRANSITIONS=64} [2024-11-07 23:40:14,700 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 53 predicate places. [2024-11-07 23:40:14,700 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 64 transitions, 453 flow [2024-11-07 23:40:14,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.266666666666667) internal successors, (124), 15 states have internal predecessors, (124), 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 23:40:14,700 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:40:14,700 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 6, 6, 1, 1, 1, 1] [2024-11-07 23:40:14,769 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-07 23:40:14,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:40:14,901 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-07 23:40:14,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:40:14,902 INFO L85 PathProgramCache]: Analyzing trace with hash 424746634, now seen corresponding path program 2 times [2024-11-07 23:40:14,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:40:14,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988312243] [2024-11-07 23:40:14,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:14,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:40:14,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:15,009 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:40:15,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:40:15,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988312243] [2024-11-07 23:40:15,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988312243] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:40:15,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580736739] [2024-11-07 23:40:15,010 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 23:40:15,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:40:15,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:40:15,012 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 23:40:15,017 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 23:40:15,068 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 23:40:15,068 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 23:40:15,069 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-07 23:40:15,070 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:40:15,113 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:40:15,113 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:40:15,208 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:40:15,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580736739] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:40:15,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:40:15,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-07 23:40:15,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595701356] [2024-11-07 23:40:15,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:40:15,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-07 23:40:15,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:40:15,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-07 23:40:15,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2024-11-07 23:40:15,210 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-07 23:40:15,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 64 transitions, 453 flow. Second operand has 17 states, 17 states have (on average 11.823529411764707) internal successors, (201), 17 states have internal predecessors, (201), 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 23:40:15,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:40:15,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-07 23:40:15,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:40:16,877 INFO L124 PetriNetUnfolderBase]: 7900/15186 cut-off events. [2024-11-07 23:40:16,878 INFO L125 PetriNetUnfolderBase]: For 66915/67347 co-relation queries the response was YES. [2024-11-07 23:40:16,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55458 conditions, 15186 events. 7900/15186 cut-off events. For 66915/67347 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 104275 event pairs, 202 based on Foata normal form. 667/15852 useless extension candidates. Maximal degree in co-relation 55432. Up to 3123 conditions per place. [2024-11-07 23:40:16,950 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 414 selfloop transitions, 58 changer transitions 9/486 dead transitions. [2024-11-07 23:40:16,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 486 transitions, 3993 flow [2024-11-07 23:40:16,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-07 23:40:16,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-07 23:40:16,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 383 transitions. [2024-11-07 23:40:16,952 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7040441176470589 [2024-11-07 23:40:16,952 INFO L175 Difference]: Start difference. First operand has 86 places, 64 transitions, 453 flow. Second operand 17 states and 383 transitions. [2024-11-07 23:40:16,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 486 transitions, 3993 flow [2024-11-07 23:40:17,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 486 transitions, 3724 flow, removed 68 selfloop flow, removed 11 redundant places. [2024-11-07 23:40:17,010 INFO L231 Difference]: Finished difference. Result has 105 places, 106 transitions, 1005 flow [2024-11-07 23:40:17,011 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1005, PETRI_PLACES=105, PETRI_TRANSITIONS=106} [2024-11-07 23:40:17,011 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 72 predicate places. [2024-11-07 23:40:17,011 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 106 transitions, 1005 flow [2024-11-07 23:40:17,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 11.823529411764707) internal successors, (201), 17 states have internal predecessors, (201), 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 23:40:17,011 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:40:17,011 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:40:17,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-07 23:40:17,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:40:17,212 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-07 23:40:17,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:40:17,213 INFO L85 PathProgramCache]: Analyzing trace with hash -374252390, now seen corresponding path program 2 times [2024-11-07 23:40:17,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:40:17,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852130854] [2024-11-07 23:40:17,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:17,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:40:17,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:17,374 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 4 proven. 83 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 23:40:17,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:40:17,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852130854] [2024-11-07 23:40:17,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852130854] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:40:17,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907727758] [2024-11-07 23:40:17,375 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 23:40:17,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:40:17,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:40:17,377 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 23:40:17,384 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 23:40:17,424 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-07 23:40:17,424 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 23:40:17,424 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-07 23:40:17,425 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:40:17,497 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-07 23:40:17,497 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:40:17,561 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-07 23:40:17,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907727758] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:40:17,561 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:40:17,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 14 [2024-11-07 23:40:17,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744433940] [2024-11-07 23:40:17,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:40:17,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-07 23:40:17,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:40:17,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-07 23:40:17,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-07 23:40:17,576 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-07 23:40:17,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 106 transitions, 1005 flow. Second operand has 15 states, 15 states have (on average 10.733333333333333) internal successors, (161), 15 states have internal predecessors, (161), 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 23:40:17,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:40:17,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-07 23:40:17,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:40:19,623 INFO L124 PetriNetUnfolderBase]: 9727/18037 cut-off events. [2024-11-07 23:40:19,623 INFO L125 PetriNetUnfolderBase]: For 74161/74941 co-relation queries the response was YES. [2024-11-07 23:40:19,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67258 conditions, 18037 events. 9727/18037 cut-off events. For 74161/74941 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 125354 event pairs, 678 based on Foata normal form. 1223/19259 useless extension candidates. Maximal degree in co-relation 67218. Up to 3302 conditions per place. [2024-11-07 23:40:19,774 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 636 selfloop transitions, 22 changer transitions 38/700 dead transitions. [2024-11-07 23:40:19,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 700 transitions, 8806 flow [2024-11-07 23:40:19,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-07 23:40:19,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-07 23:40:19,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 237 transitions. [2024-11-07 23:40:19,775 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49375 [2024-11-07 23:40:19,775 INFO L175 Difference]: Start difference. First operand has 105 places, 106 transitions, 1005 flow. Second operand 15 states and 237 transitions. [2024-11-07 23:40:19,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 700 transitions, 8806 flow [2024-11-07 23:40:20,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 700 transitions, 7922 flow, removed 387 selfloop flow, removed 8 redundant places. [2024-11-07 23:40:20,062 INFO L231 Difference]: Finished difference. Result has 111 places, 108 transitions, 976 flow [2024-11-07 23:40:20,063 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=893, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=976, PETRI_PLACES=111, PETRI_TRANSITIONS=108} [2024-11-07 23:40:20,063 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 78 predicate places. [2024-11-07 23:40:20,063 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 108 transitions, 976 flow [2024-11-07 23:40:20,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 10.733333333333333) internal successors, (161), 15 states have internal predecessors, (161), 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 23:40:20,063 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:40:20,063 INFO L204 CegarLoopForPetriNet]: trace histogram [15, 14, 14, 14, 14, 1, 1, 1, 1] [2024-11-07 23:40:20,076 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 23:40:20,264 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,SelfDestructingSolverStorable14 [2024-11-07 23:40:20,264 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-07 23:40:20,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:40:20,265 INFO L85 PathProgramCache]: Analyzing trace with hash 245536522, now seen corresponding path program 3 times [2024-11-07 23:40:20,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:40:20,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414001926] [2024-11-07 23:40:20,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:20,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:40:20,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:20,541 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:40:20,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:40:20,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414001926] [2024-11-07 23:40:20,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414001926] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:40:20,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999616277] [2024-11-07 23:40:20,543 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 23:40:20,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:40:20,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:40:20,545 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 23:40:20,549 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 23:40:20,604 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-11-07 23:40:20,604 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 23:40:20,605 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-07 23:40:20,606 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:40:20,698 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:40:20,698 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:40:21,017 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:40:21,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999616277] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:40:21,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:40:21,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2024-11-07 23:40:21,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489659053] [2024-11-07 23:40:21,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:40:21,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-07 23:40:21,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:40:21,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-07 23:40:21,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2024-11-07 23:40:21,020 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-07 23:40:21,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 108 transitions, 976 flow. Second operand has 33 states, 33 states have (on average 11.909090909090908) internal successors, (393), 33 states have internal predecessors, (393), 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 23:40:21,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:40:21,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-07 23:40:21,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:40:25,400 INFO L124 PetriNetUnfolderBase]: 19082/37565 cut-off events. [2024-11-07 23:40:25,401 INFO L125 PetriNetUnfolderBase]: For 373127/373169 co-relation queries the response was YES. [2024-11-07 23:40:25,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139952 conditions, 37565 events. 19082/37565 cut-off events. For 373127/373169 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 279269 event pairs, 263 based on Foata normal form. 1180/38744 useless extension candidates. Maximal degree in co-relation 139917. Up to 6515 conditions per place. [2024-11-07 23:40:25,652 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 885 selfloop transitions, 214 changer transitions 0/1103 dead transitions. [2024-11-07 23:40:25,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 1103 transitions, 10325 flow [2024-11-07 23:40:25,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-07 23:40:25,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-11-07 23:40:25,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 705 transitions. [2024-11-07 23:40:25,654 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6676136363636364 [2024-11-07 23:40:25,654 INFO L175 Difference]: Start difference. First operand has 111 places, 108 transitions, 976 flow. Second operand 33 states and 705 transitions. [2024-11-07 23:40:25,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 1103 transitions, 10325 flow [2024-11-07 23:40:25,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 1103 transitions, 8674 flow, removed 217 selfloop flow, removed 12 redundant places. [2024-11-07 23:40:25,797 INFO L231 Difference]: Finished difference. Result has 159 places, 264 transitions, 3063 flow [2024-11-07 23:40:25,797 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=914, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=3063, PETRI_PLACES=159, PETRI_TRANSITIONS=264} [2024-11-07 23:40:25,798 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 126 predicate places. [2024-11-07 23:40:25,798 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 264 transitions, 3063 flow [2024-11-07 23:40:25,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 11.909090909090908) internal successors, (393), 33 states have internal predecessors, (393), 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 23:40:25,798 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:40:25,798 INFO L204 CegarLoopForPetriNet]: trace histogram [31, 30, 30, 30, 30, 1, 1, 1, 1] [2024-11-07 23:40:25,810 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 23:40:26,002 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,SelfDestructingSolverStorable15 [2024-11-07 23:40:26,003 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-07 23:40:26,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:40:26,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1266550794, now seen corresponding path program 4 times [2024-11-07 23:40:26,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:40:26,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814387283] [2024-11-07 23:40:26,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:26,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:40:26,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:27,331 INFO L134 CoverageAnalysis]: Checked inductivity of 2235 backedges. 0 proven. 2235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:40:27,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:40:27,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814387283] [2024-11-07 23:40:27,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814387283] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:40:27,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452153013] [2024-11-07 23:40:27,332 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-07 23:40:27,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:40:27,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:40:27,335 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 23:40:27,335 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 23:40:27,414 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-07 23:40:27,415 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 23:40:27,416 INFO L255 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-07 23:40:27,419 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:40:27,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2235 backedges. 0 proven. 2235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:40:27,648 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:40:28,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2235 backedges. 0 proven. 2235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:40:28,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452153013] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:40:28,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:40:28,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 63 [2024-11-07 23:40:28,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701263401] [2024-11-07 23:40:28,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:40:28,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-11-07 23:40:28,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:40:28,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-11-07 23:40:28,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2024-11-07 23:40:28,845 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-07 23:40:28,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 264 transitions, 3063 flow. Second operand has 65 states, 65 states have (on average 11.953846153846154) internal successors, (777), 65 states have internal predecessors, (777), 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 23:40:28,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:40:28,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-07 23:40:28,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:40:46,936 INFO L124 PetriNetUnfolderBase]: 49007/97566 cut-off events. [2024-11-07 23:40:46,936 INFO L125 PetriNetUnfolderBase]: For 3168371/3168407 co-relation queries the response was YES. [2024-11-07 23:40:47,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 350820 conditions, 97566 events. 49007/97566 cut-off events. For 3168371/3168407 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 777054 event pairs, 715 based on Foata normal form. 2236/99801 useless extension candidates. Maximal degree in co-relation 350755. Up to 16915 conditions per place. [2024-11-07 23:40:47,997 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 1749 selfloop transitions, 786 changer transitions 0/2539 dead transitions. [2024-11-07 23:40:47,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 2539 transitions, 23227 flow [2024-11-07 23:40:47,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2024-11-07 23:40:47,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2024-11-07 23:40:48,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 1409 transitions. [2024-11-07 23:40:48,000 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6774038461538462 [2024-11-07 23:40:48,001 INFO L175 Difference]: Start difference. First operand has 159 places, 264 transitions, 3063 flow. Second operand 65 states and 1409 transitions. [2024-11-07 23:40:48,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 2539 transitions, 23227 flow [2024-11-07 23:40:48,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 2539 transitions, 21401 flow, removed 873 selfloop flow, removed 7 redundant places. [2024-11-07 23:40:48,929 INFO L231 Difference]: Finished difference. Result has 278 places, 836 transitions, 10636 flow [2024-11-07 23:40:48,929 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2831, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=217, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=65, PETRI_FLOW=10636, PETRI_PLACES=278, PETRI_TRANSITIONS=836} [2024-11-07 23:40:48,930 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 245 predicate places. [2024-11-07 23:40:48,930 INFO L471 AbstractCegarLoop]: Abstraction has has 278 places, 836 transitions, 10636 flow [2024-11-07 23:40:48,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 11.953846153846154) internal successors, (777), 65 states have internal predecessors, (777), 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 23:40:48,930 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:40:48,930 INFO L204 CegarLoopForPetriNet]: trace histogram [63, 62, 62, 62, 62, 1, 1, 1, 1] [2024-11-07 23:40:48,946 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 23:40:49,134 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,SelfDestructingSolverStorable16 [2024-11-07 23:40:49,135 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-07 23:40:49,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:40:49,135 INFO L85 PathProgramCache]: Analyzing trace with hash -870913526, now seen corresponding path program 5 times [2024-11-07 23:40:49,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:40:49,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593716092] [2024-11-07 23:40:49,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:40:49,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:40:49,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:40:52,578 INFO L134 CoverageAnalysis]: Checked inductivity of 9579 backedges. 0 proven. 9579 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:40:52,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:40:52,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593716092] [2024-11-07 23:40:52,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593716092] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:40:52,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997734836] [2024-11-07 23:40:52,578 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-07 23:40:52,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:40:52,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:40:52,584 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 23:40:52,585 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 23:40:52,768 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 63 check-sat command(s) [2024-11-07 23:40:52,768 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 23:40:52,774 INFO L255 TraceCheckSpWp]: Trace formula consists of 852 conjuncts, 127 conjuncts are in the unsatisfiable core [2024-11-07 23:40:52,784 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:40:53,110 INFO L134 CoverageAnalysis]: Checked inductivity of 9579 backedges. 0 proven. 9579 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:40:53,111 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:40:57,009 INFO L134 CoverageAnalysis]: Checked inductivity of 9579 backedges. 0 proven. 9579 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:40:57,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997734836] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:40:57,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:40:57,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63, 63] total 127 [2024-11-07 23:40:57,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133235769] [2024-11-07 23:40:57,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:40:57,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 129 states [2024-11-07 23:40:57,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:40:57,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2024-11-07 23:40:57,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2024-11-07 23:40:57,017 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-07 23:40:57,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 836 transitions, 10636 flow. Second operand has 129 states, 129 states have (on average 11.976744186046512) internal successors, (1545), 129 states have internal predecessors, (1545), 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 23:40:57,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:40:57,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-07 23:40:57,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand