./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/array-eq-trans.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/array-eq-trans.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', 'e7f1528a4c77969c5bff279724a3ed43475460be047e2e4b141f1353c3ea9cfe'] 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/array-eq-trans.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 e7f1528a4c77969c5bff279724a3ed43475460be047e2e4b141f1353c3ea9cfe --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 23:35:29,162 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 23:35:29,249 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-07 23:35:29,254 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 23:35:29,256 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 23:35:29,284 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 23:35:29,286 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 23:35:29,286 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 23:35:29,287 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 23:35:29,287 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 23:35:29,287 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 23:35:29,287 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 23:35:29,288 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 23:35:29,288 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 23:35:29,288 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 23:35:29,288 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 23:35:29,289 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 23:35:29,290 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 23:35:29,290 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 23:35:29,290 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 23:35:29,290 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 23:35:29,290 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 23:35:29,290 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 23:35:29,290 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 23:35:29,290 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 23:35:29,290 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-07 23:35:29,290 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-07 23:35:29,290 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 23:35:29,291 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 23:35:29,291 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 23:35:29,291 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 23:35:29,291 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 23:35:29,291 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 23:35:29,291 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 23:35:29,291 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 23:35:29,291 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 23:35:29,292 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 23:35:29,292 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 23:35:29,292 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 23:35:29,292 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 23:35:29,292 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 23:35:29,292 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 23:35:29,293 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 23:35:29,293 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 23:35:29,293 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 -> e7f1528a4c77969c5bff279724a3ed43475460be047e2e4b141f1353c3ea9cfe [2024-11-07 23:35:29,577 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 23:35:29,586 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 23:35:29,590 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 23:35:29,591 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 23:35:29,591 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 23:35:29,593 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2024-11-07 23:35:30,921 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 23:35:31,142 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 23:35:31,143 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2024-11-07 23:35:31,153 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ae37fe9bf/fe2c8c5cde6a4d0a96f210ee12a92618/FLAG6e12b15a6 [2024-11-07 23:35:31,175 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ae37fe9bf/fe2c8c5cde6a4d0a96f210ee12a92618 [2024-11-07 23:35:31,177 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 23:35:31,181 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 23:35:31,183 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 23:35:31,184 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 23:35:31,188 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 23:35:31,189 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:35:31" (1/1) ... [2024-11-07 23:35:31,191 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72032956 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:35:31, skipping insertion in model container [2024-11-07 23:35:31,191 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:35:31" (1/1) ... [2024-11-07 23:35:31,209 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 23:35:31,393 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 23:35:31,405 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 23:35:31,441 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 23:35:31,460 INFO L204 MainTranslator]: Completed translation [2024-11-07 23:35:31,461 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:35:31 WrapperNode [2024-11-07 23:35:31,461 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 23:35:31,463 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 23:35:31,463 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 23:35:31,463 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 23:35:31,472 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:35:31" (1/1) ... [2024-11-07 23:35:31,480 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:35:31" (1/1) ... [2024-11-07 23:35:31,510 INFO L138 Inliner]: procedures = 23, calls = 32, calls flagged for inlining = 11, calls inlined = 15, statements flattened = 202 [2024-11-07 23:35:31,512 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 23:35:31,513 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 23:35:31,513 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 23:35:31,514 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 23:35:31,522 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:35:31" (1/1) ... [2024-11-07 23:35:31,523 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:35:31" (1/1) ... [2024-11-07 23:35:31,530 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:35:31" (1/1) ... [2024-11-07 23:35:31,553 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-07 23:35:31,557 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:35:31" (1/1) ... [2024-11-07 23:35:31,557 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:35:31" (1/1) ... [2024-11-07 23:35:31,566 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:35:31" (1/1) ... [2024-11-07 23:35:31,577 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:35:31" (1/1) ... [2024-11-07 23:35:31,583 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:35:31" (1/1) ... [2024-11-07 23:35:31,584 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:35:31" (1/1) ... [2024-11-07 23:35:31,588 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 23:35:31,589 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 23:35:31,589 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 23:35:31,589 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 23:35:31,590 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:35:31" (1/1) ... [2024-11-07 23:35:31,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 23:35:31,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:35:31,624 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 23:35:31,627 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 23:35:31,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 23:35:31,656 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-07 23:35:31,656 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-07 23:35:31,656 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-07 23:35:31,656 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-07 23:35:31,657 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-07 23:35:31,657 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-07 23:35:31,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 23:35:31,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-07 23:35:31,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-07 23:35:31,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-07 23:35:31,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-07 23:35:31,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 23:35:31,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 23:35:31,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-07 23:35:31,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-07 23:35:31,660 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 23:35:31,755 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 23:35:31,757 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 23:35:32,210 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 23:35:32,211 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 23:35:32,563 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 23:35:32,564 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-07 23:35:32,564 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:35:32 BoogieIcfgContainer [2024-11-07 23:35:32,564 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 23:35:32,566 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 23:35:32,567 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 23:35:32,571 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 23:35:32,572 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 11:35:31" (1/3) ... [2024-11-07 23:35:32,572 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@634862c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:35:32, skipping insertion in model container [2024-11-07 23:35:32,572 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:35:31" (2/3) ... [2024-11-07 23:35:32,573 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@634862c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:35:32, skipping insertion in model container [2024-11-07 23:35:32,573 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:35:32" (3/3) ... [2024-11-07 23:35:32,574 INFO L112 eAbstractionObserver]: Analyzing ICFG array-eq-trans.wvr.c [2024-11-07 23:35:32,588 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 23:35:32,588 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-11-07 23:35:32,588 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 23:35:32,683 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-07 23:35:32,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 62 transitions, 145 flow [2024-11-07 23:35:32,761 INFO L124 PetriNetUnfolderBase]: 9/59 cut-off events. [2024-11-07 23:35:32,763 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-07 23:35:32,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 59 events. 9/59 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 147 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2024-11-07 23:35:32,768 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 62 transitions, 145 flow [2024-11-07 23:35:32,772 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 57 transitions, 129 flow [2024-11-07 23:35:32,781 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 23:35:32,792 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;@19309e6a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 23:35:32,792 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-11-07 23:35:32,796 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 23:35:32,796 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-07 23:35:32,796 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 23:35:32,796 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:35:32,797 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-07 23:35:32,797 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-07 23:35:32,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:35:32,802 INFO L85 PathProgramCache]: Analyzing trace with hash 770478, now seen corresponding path program 1 times [2024-11-07 23:35:32,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:35:32,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217088211] [2024-11-07 23:35:32,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:35:32,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:35:32,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:35:33,053 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 23:35:33,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:35:33,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217088211] [2024-11-07 23:35:33,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217088211] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:35:33,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:35:33,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 23:35:33,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501138835] [2024-11-07 23:35:33,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:35:33,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:35:33,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:35:33,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:35:33,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:35:33,127 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-07 23:35:33,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 57 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 23:35:33,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:35:33,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-07 23:35:33,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:35:33,675 INFO L124 PetriNetUnfolderBase]: 1728/2695 cut-off events. [2024-11-07 23:35:33,675 INFO L125 PetriNetUnfolderBase]: For 126/126 co-relation queries the response was YES. [2024-11-07 23:35:33,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5111 conditions, 2695 events. 1728/2695 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 14562 event pairs, 995 based on Foata normal form. 3/1816 useless extension candidates. Maximal degree in co-relation 4712. Up to 2276 conditions per place. [2024-11-07 23:35:33,709 INFO L140 encePairwiseOnDemand]: 46/62 looper letters, 41 selfloop transitions, 10 changer transitions 0/66 dead transitions. [2024-11-07 23:35:33,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 66 transitions, 249 flow [2024-11-07 23:35:33,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:35:33,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:35:33,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2024-11-07 23:35:33,720 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5201612903225806 [2024-11-07 23:35:33,722 INFO L175 Difference]: Start difference. First operand has 58 places, 57 transitions, 129 flow. Second operand 4 states and 129 transitions. [2024-11-07 23:35:33,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 66 transitions, 249 flow [2024-11-07 23:35:33,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 66 transitions, 240 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-07 23:35:33,733 INFO L231 Difference]: Finished difference. Result has 59 places, 66 transitions, 208 flow [2024-11-07 23:35:33,736 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=208, PETRI_PLACES=59, PETRI_TRANSITIONS=66} [2024-11-07 23:35:33,743 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 1 predicate places. [2024-11-07 23:35:33,743 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 66 transitions, 208 flow [2024-11-07 23:35:33,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 23:35:33,743 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:35:33,743 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-07 23:35:33,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 23:35:33,744 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-07 23:35:33,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:35:33,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1479239291, now seen corresponding path program 1 times [2024-11-07 23:35:33,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:35:33,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16924434] [2024-11-07 23:35:33,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:35:33,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:35:33,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:35:33,926 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 23:35:33,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:35:33,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16924434] [2024-11-07 23:35:33,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16924434] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:35:33,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933601946] [2024-11-07 23:35:33,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:35:33,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:35:33,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:35:33,930 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 23:35:33,932 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 23:35:34,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:35:34,022 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-07 23:35:34,025 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:35:34,084 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 23:35:34,084 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 23:35:34,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933601946] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:35:34,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 23:35:34,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-07 23:35:34,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528445202] [2024-11-07 23:35:34,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:35:34,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 23:35:34,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:35:34,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 23:35:34,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-07 23:35:34,123 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-07 23:35:34,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 66 transitions, 208 flow. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 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 23:35:34,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:35:34,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-07 23:35:34,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:35:34,534 INFO L124 PetriNetUnfolderBase]: 1728/2692 cut-off events. [2024-11-07 23:35:34,535 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-11-07 23:35:34,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5088 conditions, 2692 events. 1728/2692 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 14544 event pairs, 995 based on Foata normal form. 3/1818 useless extension candidates. Maximal degree in co-relation 5015. Up to 2261 conditions per place. [2024-11-07 23:35:34,559 INFO L140 encePairwiseOnDemand]: 49/62 looper letters, 31 selfloop transitions, 17 changer transitions 0/63 dead transitions. [2024-11-07 23:35:34,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 63 transitions, 292 flow [2024-11-07 23:35:34,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 23:35:34,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 23:35:34,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 159 transitions. [2024-11-07 23:35:34,563 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4274193548387097 [2024-11-07 23:35:34,563 INFO L175 Difference]: Start difference. First operand has 59 places, 66 transitions, 208 flow. Second operand 6 states and 159 transitions. [2024-11-07 23:35:34,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 63 transitions, 292 flow [2024-11-07 23:35:34,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 63 transitions, 292 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 23:35:34,566 INFO L231 Difference]: Finished difference. Result has 61 places, 63 transitions, 230 flow [2024-11-07 23:35:34,568 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=230, PETRI_PLACES=61, PETRI_TRANSITIONS=63} [2024-11-07 23:35:34,570 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 3 predicate places. [2024-11-07 23:35:34,570 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 63 transitions, 230 flow [2024-11-07 23:35:34,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 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 23:35:34,572 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:35:34,572 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-07 23:35:34,591 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 23:35:34,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:35:34,777 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-07 23:35:34,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:35:34,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1388221465, now seen corresponding path program 1 times [2024-11-07 23:35:34,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:35:34,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661085875] [2024-11-07 23:35:34,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:35:34,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:35:34,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:35:34,908 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:35:34,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:35:34,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661085875] [2024-11-07 23:35:34,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661085875] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:35:34,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762963159] [2024-11-07 23:35:34,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:35:34,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:35:34,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:35:34,913 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 23:35:34,915 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 23:35:34,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:35:34,991 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-07 23:35:34,992 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:35:35,019 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:35:35,019 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:35:35,063 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:35:35,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762963159] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:35:35,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:35:35,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-07 23:35:35,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370217745] [2024-11-07 23:35:35,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:35:35,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-07 23:35:35,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:35:35,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-07 23:35:35,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-07 23:35:35,115 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-07 23:35:35,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 63 transitions, 230 flow. Second operand has 12 states, 12 states have (on average 19.083333333333332) internal successors, (229), 12 states have internal predecessors, (229), 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 23:35:35,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:35:35,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-07 23:35:35,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:35:35,571 INFO L124 PetriNetUnfolderBase]: 1737/2728 cut-off events. [2024-11-07 23:35:35,571 INFO L125 PetriNetUnfolderBase]: For 106/106 co-relation queries the response was YES. [2024-11-07 23:35:35,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5229 conditions, 2728 events. 1737/2728 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 14903 event pairs, 995 based on Foata normal form. 9/1860 useless extension candidates. Maximal degree in co-relation 5017. Up to 2276 conditions per place. [2024-11-07 23:35:35,596 INFO L140 encePairwiseOnDemand]: 49/62 looper letters, 38 selfloop transitions, 37 changer transitions 0/90 dead transitions. [2024-11-07 23:35:35,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 90 transitions, 554 flow [2024-11-07 23:35:35,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 23:35:35,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-07 23:35:35,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 264 transitions. [2024-11-07 23:35:35,601 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4258064516129032 [2024-11-07 23:35:35,602 INFO L175 Difference]: Start difference. First operand has 61 places, 63 transitions, 230 flow. Second operand 10 states and 264 transitions. [2024-11-07 23:35:35,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 90 transitions, 554 flow [2024-11-07 23:35:35,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 90 transitions, 471 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-11-07 23:35:35,605 INFO L231 Difference]: Finished difference. Result has 68 places, 90 transitions, 445 flow [2024-11-07 23:35:35,606 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=445, PETRI_PLACES=68, PETRI_TRANSITIONS=90} [2024-11-07 23:35:35,607 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 10 predicate places. [2024-11-07 23:35:35,607 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 90 transitions, 445 flow [2024-11-07 23:35:35,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.083333333333332) internal successors, (229), 12 states have internal predecessors, (229), 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 23:35:35,608 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:35:35,608 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:35:35,625 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-07 23:35:35,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:35:35,813 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-07 23:35:35,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:35:35,814 INFO L85 PathProgramCache]: Analyzing trace with hash 2068068255, now seen corresponding path program 1 times [2024-11-07 23:35:35,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:35:35,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759980494] [2024-11-07 23:35:35,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:35:35,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:35:35,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:35:35,922 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 23:35:35,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:35:35,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759980494] [2024-11-07 23:35:35,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759980494] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:35:35,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:35:35,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 23:35:35,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116725844] [2024-11-07 23:35:35,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:35:35,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:35:35,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:35:35,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:35:35,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:35:35,932 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 62 [2024-11-07 23:35:35,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 90 transitions, 445 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 23:35:35,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:35:35,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 62 [2024-11-07 23:35:35,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:35:36,224 INFO L124 PetriNetUnfolderBase]: 2009/3084 cut-off events. [2024-11-07 23:35:36,225 INFO L125 PetriNetUnfolderBase]: For 142/142 co-relation queries the response was YES. [2024-11-07 23:35:36,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5978 conditions, 3084 events. 2009/3084 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 16788 event pairs, 829 based on Foata normal form. 86/2159 useless extension candidates. Maximal degree in co-relation 5880. Up to 1981 conditions per place. [2024-11-07 23:35:36,250 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 87 selfloop transitions, 3 changer transitions 0/106 dead transitions. [2024-11-07 23:35:36,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 106 transitions, 660 flow [2024-11-07 23:35:36,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:35:36,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:35:36,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 143 transitions. [2024-11-07 23:35:36,252 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5766129032258065 [2024-11-07 23:35:36,252 INFO L175 Difference]: Start difference. First operand has 68 places, 90 transitions, 445 flow. Second operand 4 states and 143 transitions. [2024-11-07 23:35:36,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 106 transitions, 660 flow [2024-11-07 23:35:36,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 106 transitions, 623 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-07 23:35:36,260 INFO L231 Difference]: Finished difference. Result has 68 places, 89 transitions, 412 flow [2024-11-07 23:35:36,261 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=412, PETRI_PLACES=68, PETRI_TRANSITIONS=89} [2024-11-07 23:35:36,261 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 10 predicate places. [2024-11-07 23:35:36,262 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 89 transitions, 412 flow [2024-11-07 23:35:36,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 23:35:36,262 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:35:36,263 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:35:36,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 23:35:36,263 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-07 23:35:36,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:35:36,264 INFO L85 PathProgramCache]: Analyzing trace with hash -314392714, now seen corresponding path program 1 times [2024-11-07 23:35:36,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:35:36,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400632052] [2024-11-07 23:35:36,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:35:36,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:35:36,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:35:36,365 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 23:35:36,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:35:36,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400632052] [2024-11-07 23:35:36,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400632052] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:35:36,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:35:36,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 23:35:36,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476364340] [2024-11-07 23:35:36,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:35:36,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:35:36,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:35:36,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:35:36,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:35:36,377 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 62 [2024-11-07 23:35:36,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 89 transitions, 412 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 23:35:36,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:35:36,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 62 [2024-11-07 23:35:36,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:35:36,811 INFO L124 PetriNetUnfolderBase]: 3164/4652 cut-off events. [2024-11-07 23:35:36,811 INFO L125 PetriNetUnfolderBase]: For 354/354 co-relation queries the response was YES. [2024-11-07 23:35:36,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9464 conditions, 4652 events. 3164/4652 cut-off events. For 354/354 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 24920 event pairs, 657 based on Foata normal form. 86/3558 useless extension candidates. Maximal degree in co-relation 9370. Up to 2383 conditions per place. [2024-11-07 23:35:36,848 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 112 selfloop transitions, 3 changer transitions 0/131 dead transitions. [2024-11-07 23:35:36,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 131 transitions, 738 flow [2024-11-07 23:35:36,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:35:36,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:35:36,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 168 transitions. [2024-11-07 23:35:36,851 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6774193548387096 [2024-11-07 23:35:36,851 INFO L175 Difference]: Start difference. First operand has 68 places, 89 transitions, 412 flow. Second operand 4 states and 168 transitions. [2024-11-07 23:35:36,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 131 transitions, 738 flow [2024-11-07 23:35:36,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 131 transitions, 728 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-07 23:35:36,856 INFO L231 Difference]: Finished difference. Result has 70 places, 91 transitions, 426 flow [2024-11-07 23:35:36,857 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=426, PETRI_PLACES=70, PETRI_TRANSITIONS=91} [2024-11-07 23:35:36,857 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 12 predicate places. [2024-11-07 23:35:36,858 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 91 transitions, 426 flow [2024-11-07 23:35:36,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 23:35:36,858 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:35:36,858 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:35:36,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-07 23:35:36,858 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-07 23:35:36,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:35:36,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1767512434, now seen corresponding path program 1 times [2024-11-07 23:35:36,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:35:36,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348687742] [2024-11-07 23:35:36,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:35:36,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:35:36,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:35:36,968 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 23:35:36,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:35:36,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348687742] [2024-11-07 23:35:36,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348687742] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:35:36,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:35:36,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 23:35:36,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869285562] [2024-11-07 23:35:36,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:35:36,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:35:36,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:35:36,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:35:36,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:35:36,976 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 62 [2024-11-07 23:35:36,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 91 transitions, 426 flow. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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 23:35:36,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:35:36,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 62 [2024-11-07 23:35:36,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:35:37,649 INFO L124 PetriNetUnfolderBase]: 5476/8026 cut-off events. [2024-11-07 23:35:37,649 INFO L125 PetriNetUnfolderBase]: For 1195/1297 co-relation queries the response was YES. [2024-11-07 23:35:37,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16805 conditions, 8026 events. 5476/8026 cut-off events. For 1195/1297 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 45427 event pairs, 1108 based on Foata normal form. 152/6208 useless extension candidates. Maximal degree in co-relation 16709. Up to 4449 conditions per place. [2024-11-07 23:35:37,697 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 116 selfloop transitions, 3 changer transitions 0/134 dead transitions. [2024-11-07 23:35:37,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 134 transitions, 779 flow [2024-11-07 23:35:37,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:35:37,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:35:37,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 167 transitions. [2024-11-07 23:35:37,699 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6733870967741935 [2024-11-07 23:35:37,699 INFO L175 Difference]: Start difference. First operand has 70 places, 91 transitions, 426 flow. Second operand 4 states and 167 transitions. [2024-11-07 23:35:37,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 134 transitions, 779 flow [2024-11-07 23:35:37,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 134 transitions, 775 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 23:35:37,705 INFO L231 Difference]: Finished difference. Result has 74 places, 93 transitions, 446 flow [2024-11-07 23:35:37,707 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=446, PETRI_PLACES=74, PETRI_TRANSITIONS=93} [2024-11-07 23:35:37,708 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 16 predicate places. [2024-11-07 23:35:37,708 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 93 transitions, 446 flow [2024-11-07 23:35:37,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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 23:35:37,708 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:35:37,708 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:35:37,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-07 23:35:37,708 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-07 23:35:37,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:35:37,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1456205597, now seen corresponding path program 1 times [2024-11-07 23:35:37,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:35:37,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897360568] [2024-11-07 23:35:37,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:35:37,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:35:37,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:35:37,807 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 23:35:37,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:35:37,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897360568] [2024-11-07 23:35:37,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897360568] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:35:37,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:35:37,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 23:35:37,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774675924] [2024-11-07 23:35:37,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:35:37,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:35:37,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:35:37,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:35:37,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:35:37,819 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 62 [2024-11-07 23:35:37,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 93 transitions, 446 flow. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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 23:35:37,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:35:37,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 62 [2024-11-07 23:35:37,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:35:38,707 INFO L124 PetriNetUnfolderBase]: 8504/12528 cut-off events. [2024-11-07 23:35:38,708 INFO L125 PetriNetUnfolderBase]: For 3516/3966 co-relation queries the response was YES. [2024-11-07 23:35:38,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27627 conditions, 12528 events. 8504/12528 cut-off events. For 3516/3966 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 74671 event pairs, 2163 based on Foata normal form. 224/10503 useless extension candidates. Maximal degree in co-relation 27529. Up to 6413 conditions per place. [2024-11-07 23:35:38,808 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 119 selfloop transitions, 3 changer transitions 0/137 dead transitions. [2024-11-07 23:35:38,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 137 transitions, 824 flow [2024-11-07 23:35:38,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:35:38,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:35:38,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 164 transitions. [2024-11-07 23:35:38,811 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6612903225806451 [2024-11-07 23:35:38,811 INFO L175 Difference]: Start difference. First operand has 74 places, 93 transitions, 446 flow. Second operand 4 states and 164 transitions. [2024-11-07 23:35:38,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 137 transitions, 824 flow [2024-11-07 23:35:38,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 137 transitions, 820 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 23:35:38,816 INFO L231 Difference]: Finished difference. Result has 78 places, 95 transitions, 466 flow [2024-11-07 23:35:38,816 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=466, PETRI_PLACES=78, PETRI_TRANSITIONS=95} [2024-11-07 23:35:38,817 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 20 predicate places. [2024-11-07 23:35:38,817 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 95 transitions, 466 flow [2024-11-07 23:35:38,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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 23:35:38,818 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:35:38,818 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:35:38,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-07 23:35:38,818 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-07 23:35:38,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:35:38,819 INFO L85 PathProgramCache]: Analyzing trace with hash 130547706, now seen corresponding path program 1 times [2024-11-07 23:35:38,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:35:38,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152106344] [2024-11-07 23:35:38,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:35:38,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:35:38,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:35:38,938 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 23:35:38,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:35:38,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152106344] [2024-11-07 23:35:38,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152106344] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:35:38,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:35:38,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 23:35:38,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752649287] [2024-11-07 23:35:38,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:35:38,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:35:38,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:35:38,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:35:38,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:35:38,940 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-11-07 23:35:38,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 95 transitions, 466 flow. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 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 23:35:38,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:35:38,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-11-07 23:35:38,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:35:39,901 INFO L124 PetriNetUnfolderBase]: 9178/14736 cut-off events. [2024-11-07 23:35:39,901 INFO L125 PetriNetUnfolderBase]: For 4978/5117 co-relation queries the response was YES. [2024-11-07 23:35:39,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33377 conditions, 14736 events. 9178/14736 cut-off events. For 4978/5117 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 101326 event pairs, 6652 based on Foata normal form. 0/13048 useless extension candidates. Maximal degree in co-relation 33220. Up to 9737 conditions per place. [2024-11-07 23:35:40,120 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 124 selfloop transitions, 10 changer transitions 0/151 dead transitions. [2024-11-07 23:35:40,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 151 transitions, 1002 flow [2024-11-07 23:35:40,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 23:35:40,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 23:35:40,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 194 transitions. [2024-11-07 23:35:40,122 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6258064516129033 [2024-11-07 23:35:40,122 INFO L175 Difference]: Start difference. First operand has 78 places, 95 transitions, 466 flow. Second operand 5 states and 194 transitions. [2024-11-07 23:35:40,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 151 transitions, 1002 flow [2024-11-07 23:35:40,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 151 transitions, 999 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 23:35:40,135 INFO L231 Difference]: Finished difference. Result has 83 places, 102 transitions, 558 flow [2024-11-07 23:35:40,136 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=558, PETRI_PLACES=83, PETRI_TRANSITIONS=102} [2024-11-07 23:35:40,138 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 25 predicate places. [2024-11-07 23:35:40,138 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 102 transitions, 558 flow [2024-11-07 23:35:40,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 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 23:35:40,139 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:35:40,139 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:35:40,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-07 23:35:40,139 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-07 23:35:40,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:35:40,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1804449395, now seen corresponding path program 1 times [2024-11-07 23:35:40,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:35:40,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499828971] [2024-11-07 23:35:40,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:35:40,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:35:40,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:35:40,260 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 23:35:40,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:35:40,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499828971] [2024-11-07 23:35:40,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499828971] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:35:40,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:35:40,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 23:35:40,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641411004] [2024-11-07 23:35:40,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:35:40,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 23:35:40,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:35:40,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 23:35:40,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-07 23:35:40,263 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-11-07 23:35:40,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 102 transitions, 558 flow. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 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 23:35:40,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:35:40,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-11-07 23:35:40,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:35:41,366 INFO L124 PetriNetUnfolderBase]: 11462/18144 cut-off events. [2024-11-07 23:35:41,366 INFO L125 PetriNetUnfolderBase]: For 6345/6757 co-relation queries the response was YES. [2024-11-07 23:35:41,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41392 conditions, 18144 events. 11462/18144 cut-off events. For 6345/6757 co-relation queries the response was YES. Maximal size of possible extension queue 674. Compared 125296 event pairs, 4982 based on Foata normal form. 0/16680 useless extension candidates. Maximal degree in co-relation 41174. Up to 6489 conditions per place. [2024-11-07 23:35:41,495 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 139 selfloop transitions, 14 changer transitions 0/170 dead transitions. [2024-11-07 23:35:41,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 170 transitions, 1137 flow [2024-11-07 23:35:41,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 23:35:41,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 23:35:41,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 235 transitions. [2024-11-07 23:35:41,497 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6317204301075269 [2024-11-07 23:35:41,497 INFO L175 Difference]: Start difference. First operand has 83 places, 102 transitions, 558 flow. Second operand 6 states and 235 transitions. [2024-11-07 23:35:41,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 170 transitions, 1137 flow [2024-11-07 23:35:41,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 170 transitions, 1133 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-07 23:35:41,512 INFO L231 Difference]: Finished difference. Result has 89 places, 106 transitions, 637 flow [2024-11-07 23:35:41,513 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=637, PETRI_PLACES=89, PETRI_TRANSITIONS=106} [2024-11-07 23:35:41,513 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 31 predicate places. [2024-11-07 23:35:41,514 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 106 transitions, 637 flow [2024-11-07 23:35:41,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 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 23:35:41,514 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:35:41,514 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-07 23:35:41,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-07 23:35:41,514 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-07 23:35:41,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:35:41,515 INFO L85 PathProgramCache]: Analyzing trace with hash 844002644, now seen corresponding path program 2 times [2024-11-07 23:35:41,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:35:41,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554506343] [2024-11-07 23:35:41,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:35:41,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:35:41,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:35:41,723 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:35:41,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:35:41,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554506343] [2024-11-07 23:35:41,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554506343] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:35:41,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584932473] [2024-11-07 23:35:41,724 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 23:35:41,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:35:41,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:35:41,727 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 23:35:41,729 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 23:35:41,809 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-07 23:35:41,809 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 23:35:41,810 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-07 23:35:41,811 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:35:41,867 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-07 23:35:41,867 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:35:41,911 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-07 23:35:41,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584932473] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:35:41,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:35:41,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-07 23:35:41,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628932600] [2024-11-07 23:35:41,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:35:41,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-07 23:35:41,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:35:41,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-07 23:35:41,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-07 23:35:41,960 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-07 23:35:41,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 106 transitions, 637 flow. Second operand has 14 states, 14 states have (on average 19.142857142857142) internal successors, (268), 14 states have internal predecessors, (268), 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 23:35:41,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:35:41,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-07 23:35:41,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:35:43,623 INFO L124 PetriNetUnfolderBase]: 11469/18852 cut-off events. [2024-11-07 23:35:43,624 INFO L125 PetriNetUnfolderBase]: For 7689/7729 co-relation queries the response was YES. [2024-11-07 23:35:43,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43454 conditions, 18852 events. 11469/18852 cut-off events. For 7689/7729 co-relation queries the response was YES. Maximal size of possible extension queue 687. Compared 138441 event pairs, 8454 based on Foata normal form. 8/17969 useless extension candidates. Maximal degree in co-relation 43134. Up to 15729 conditions per place. [2024-11-07 23:35:43,733 INFO L140 encePairwiseOnDemand]: 49/62 looper letters, 40 selfloop transitions, 61 changer transitions 0/115 dead transitions. [2024-11-07 23:35:43,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 115 transitions, 902 flow [2024-11-07 23:35:43,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-07 23:35:43,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-07 23:35:43,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 519 transitions. [2024-11-07 23:35:43,736 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3487903225806452 [2024-11-07 23:35:43,736 INFO L175 Difference]: Start difference. First operand has 89 places, 106 transitions, 637 flow. Second operand 24 states and 519 transitions. [2024-11-07 23:35:43,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 115 transitions, 902 flow [2024-11-07 23:35:43,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 115 transitions, 888 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-07 23:35:43,752 INFO L231 Difference]: Finished difference. Result has 111 places, 115 transitions, 833 flow [2024-11-07 23:35:43,752 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=833, PETRI_PLACES=111, PETRI_TRANSITIONS=115} [2024-11-07 23:35:43,753 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 53 predicate places. [2024-11-07 23:35:43,753 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 115 transitions, 833 flow [2024-11-07 23:35:43,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 19.142857142857142) internal successors, (268), 14 states have internal predecessors, (268), 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 23:35:43,753 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:35:43,753 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:35:43,766 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 23:35:43,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:35:43,954 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-07 23:35:43,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:35:43,954 INFO L85 PathProgramCache]: Analyzing trace with hash 610272312, now seen corresponding path program 1 times [2024-11-07 23:35:43,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:35:43,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829372346] [2024-11-07 23:35:43,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:35:43,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:35:43,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:35:44,065 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 23:35:44,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:35:44,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829372346] [2024-11-07 23:35:44,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829372346] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:35:44,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:35:44,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 23:35:44,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269889012] [2024-11-07 23:35:44,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:35:44,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:35:44,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:35:44,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:35:44,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:35:44,066 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-11-07 23:35:44,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 115 transitions, 833 flow. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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 23:35:44,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:35:44,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-11-07 23:35:44,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:35:45,108 INFO L124 PetriNetUnfolderBase]: 9752/15640 cut-off events. [2024-11-07 23:35:45,108 INFO L125 PetriNetUnfolderBase]: For 6269/6469 co-relation queries the response was YES. [2024-11-07 23:35:45,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36428 conditions, 15640 events. 9752/15640 cut-off events. For 6269/6469 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 108079 event pairs, 7166 based on Foata normal form. 0/14999 useless extension candidates. Maximal degree in co-relation 36187. Up to 12337 conditions per place. [2024-11-07 23:35:45,241 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 130 selfloop transitions, 12 changer transitions 5/163 dead transitions. [2024-11-07 23:35:45,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 163 transitions, 1428 flow [2024-11-07 23:35:45,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 23:35:45,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 23:35:45,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 190 transitions. [2024-11-07 23:35:45,242 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6129032258064516 [2024-11-07 23:35:45,242 INFO L175 Difference]: Start difference. First operand has 111 places, 115 transitions, 833 flow. Second operand 5 states and 190 transitions. [2024-11-07 23:35:45,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 163 transitions, 1428 flow [2024-11-07 23:35:45,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 163 transitions, 1225 flow, removed 20 selfloop flow, removed 11 redundant places. [2024-11-07 23:35:45,259 INFO L231 Difference]: Finished difference. Result has 105 places, 114 transitions, 695 flow [2024-11-07 23:35:45,259 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=673, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=695, PETRI_PLACES=105, PETRI_TRANSITIONS=114} [2024-11-07 23:35:45,260 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 47 predicate places. [2024-11-07 23:35:45,260 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 114 transitions, 695 flow [2024-11-07 23:35:45,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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 23:35:45,260 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:35:45,261 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:35:45,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-07 23:35:45,261 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-07 23:35:45,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:35:45,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1384429299, now seen corresponding path program 1 times [2024-11-07 23:35:45,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:35:45,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208117504] [2024-11-07 23:35:45,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:35:45,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:35:45,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:35:45,346 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-07 23:35:45,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:35:45,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208117504] [2024-11-07 23:35:45,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208117504] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:35:45,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:35:45,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 23:35:45,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036533984] [2024-11-07 23:35:45,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:35:45,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 23:35:45,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:35:45,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 23:35:45,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 23:35:45,349 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-11-07 23:35:45,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 114 transitions, 695 flow. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 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 23:35:45,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:35:45,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-11-07 23:35:45,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:35:46,484 INFO L124 PetriNetUnfolderBase]: 8401/12979 cut-off events. [2024-11-07 23:35:46,484 INFO L125 PetriNetUnfolderBase]: For 5611/6166 co-relation queries the response was YES. [2024-11-07 23:35:46,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31061 conditions, 12979 events. 8401/12979 cut-off events. For 5611/6166 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 82405 event pairs, 3460 based on Foata normal form. 67/12995 useless extension candidates. Maximal degree in co-relation 30838. Up to 5531 conditions per place. [2024-11-07 23:35:46,565 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 144 selfloop transitions, 14 changer transitions 3/177 dead transitions. [2024-11-07 23:35:46,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 177 transitions, 1273 flow [2024-11-07 23:35:46,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 23:35:46,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 23:35:46,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 233 transitions. [2024-11-07 23:35:46,567 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6263440860215054 [2024-11-07 23:35:46,567 INFO L175 Difference]: Start difference. First operand has 105 places, 114 transitions, 695 flow. Second operand 6 states and 233 transitions. [2024-11-07 23:35:46,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 177 transitions, 1273 flow [2024-11-07 23:35:46,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 177 transitions, 1249 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-07 23:35:46,584 INFO L231 Difference]: Finished difference. Result has 107 places, 114 transitions, 704 flow [2024-11-07 23:35:46,585 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=671, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=704, PETRI_PLACES=107, PETRI_TRANSITIONS=114} [2024-11-07 23:35:46,585 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 49 predicate places. [2024-11-07 23:35:46,585 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 114 transitions, 704 flow [2024-11-07 23:35:46,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 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 23:35:46,586 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:35:46,586 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:35:46,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-07 23:35:46,586 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-07 23:35:46,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:35:46,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1148795679, now seen corresponding path program 1 times [2024-11-07 23:35:46,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:35:46,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236498357] [2024-11-07 23:35:46,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:35:46,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:35:46,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:35:46,712 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 23:35:46,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:35:46,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236498357] [2024-11-07 23:35:46,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236498357] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:35:46,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:35:46,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 23:35:46,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41896041] [2024-11-07 23:35:46,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:35:46,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 23:35:46,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:35:46,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 23:35:46,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-07 23:35:46,716 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-11-07 23:35:46,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 114 transitions, 704 flow. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 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 23:35:46,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:35:46,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-11-07 23:35:46,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:35:47,949 INFO L124 PetriNetUnfolderBase]: 10798/17310 cut-off events. [2024-11-07 23:35:47,949 INFO L125 PetriNetUnfolderBase]: For 8586/8923 co-relation queries the response was YES. [2024-11-07 23:35:48,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41470 conditions, 17310 events. 10798/17310 cut-off events. For 8586/8923 co-relation queries the response was YES. Maximal size of possible extension queue 603. Compared 120328 event pairs, 5144 based on Foata normal form. 262/17517 useless extension candidates. Maximal degree in co-relation 41247. Up to 6048 conditions per place. [2024-11-07 23:35:48,085 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 129 selfloop transitions, 19 changer transitions 1/165 dead transitions. [2024-11-07 23:35:48,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 165 transitions, 1172 flow [2024-11-07 23:35:48,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 23:35:48,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 23:35:48,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 205 transitions. [2024-11-07 23:35:48,086 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6612903225806451 [2024-11-07 23:35:48,086 INFO L175 Difference]: Start difference. First operand has 107 places, 114 transitions, 704 flow. Second operand 5 states and 205 transitions. [2024-11-07 23:35:48,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 165 transitions, 1172 flow [2024-11-07 23:35:48,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 165 transitions, 1143 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-07 23:35:48,109 INFO L231 Difference]: Finished difference. Result has 108 places, 113 transitions, 709 flow [2024-11-07 23:35:48,109 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=679, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=709, PETRI_PLACES=108, PETRI_TRANSITIONS=113} [2024-11-07 23:35:48,110 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 50 predicate places. [2024-11-07 23:35:48,110 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 113 transitions, 709 flow [2024-11-07 23:35:48,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 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 23:35:48,110 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:35:48,110 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1] [2024-11-07 23:35:48,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-07 23:35:48,111 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-07 23:35:48,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:35:48,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1617871485, now seen corresponding path program 1 times [2024-11-07 23:35:48,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:35:48,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731049369] [2024-11-07 23:35:48,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:35:48,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:35:48,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:35:48,312 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:35:48,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:35:48,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731049369] [2024-11-07 23:35:48,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731049369] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:35:48,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947642765] [2024-11-07 23:35:48,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:35:48,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:35:48,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:35:48,315 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 23:35:48,318 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 23:35:48,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:35:48,406 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-07 23:35:48,408 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:35:48,466 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:35:48,466 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:35:48,658 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:35:48,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947642765] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:35:48,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:35:48,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2024-11-07 23:35:48,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066914491] [2024-11-07 23:35:48,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:35:48,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-07 23:35:48,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:35:48,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-07 23:35:48,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2024-11-07 23:35:48,727 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-07 23:35:48,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 113 transitions, 709 flow. Second operand has 28 states, 28 states have (on average 19.071428571428573) internal successors, (534), 28 states have internal predecessors, (534), 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 23:35:48,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:35:48,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-07 23:35:48,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:35:50,258 INFO L124 PetriNetUnfolderBase]: 10723/17788 cut-off events. [2024-11-07 23:35:50,258 INFO L125 PetriNetUnfolderBase]: For 10565/10597 co-relation queries the response was YES. [2024-11-07 23:35:50,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43070 conditions, 17788 events. 10723/17788 cut-off events. For 10565/10597 co-relation queries the response was YES. Maximal size of possible extension queue 620. Compared 130493 event pairs, 7960 based on Foata normal form. 42/17671 useless extension candidates. Maximal degree in co-relation 42138. Up to 14797 conditions per place. [2024-11-07 23:35:50,425 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 43 selfloop transitions, 126 changer transitions 0/183 dead transitions. [2024-11-07 23:35:50,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 183 transitions, 1621 flow [2024-11-07 23:35:50,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-07 23:35:50,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-07 23:35:50,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 628 transitions. [2024-11-07 23:35:50,427 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38957816377171217 [2024-11-07 23:35:50,427 INFO L175 Difference]: Start difference. First operand has 108 places, 113 transitions, 709 flow. Second operand 26 states and 628 transitions. [2024-11-07 23:35:50,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 183 transitions, 1621 flow [2024-11-07 23:35:50,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 183 transitions, 1588 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 23:35:50,462 INFO L231 Difference]: Finished difference. Result has 138 places, 183 transitions, 1586 flow [2024-11-07 23:35:50,463 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1586, PETRI_PLACES=138, PETRI_TRANSITIONS=183} [2024-11-07 23:35:50,463 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 80 predicate places. [2024-11-07 23:35:50,463 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 183 transitions, 1586 flow [2024-11-07 23:35:50,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 19.071428571428573) internal successors, (534), 28 states have internal predecessors, (534), 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 23:35:50,464 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:35:50,464 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:35:50,482 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 23:35:50,667 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,SelfDestructingSolverStorable13 [2024-11-07 23:35:50,668 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-07 23:35:50,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:35:50,668 INFO L85 PathProgramCache]: Analyzing trace with hash -873364429, now seen corresponding path program 1 times [2024-11-07 23:35:50,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:35:50,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094033489] [2024-11-07 23:35:50,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:35:50,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:35:50,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:35:50,838 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 23:35:50,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:35:50,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094033489] [2024-11-07 23:35:50,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094033489] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:35:50,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844761043] [2024-11-07 23:35:50,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:35:50,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:35:50,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:35:50,842 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 23:35:50,844 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 23:35:50,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:35:50,953 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-07 23:35:50,955 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:35:51,298 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 23:35:51,299 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:35:51,440 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 23:35:51,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844761043] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:35:51,440 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:35:51,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 20 [2024-11-07 23:35:51,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414368437] [2024-11-07 23:35:51,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:35:51,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-07 23:35:51,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:35:51,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-07 23:35:51,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2024-11-07 23:35:51,625 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-07 23:35:51,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 183 transitions, 1586 flow. Second operand has 21 states, 21 states have (on average 17.952380952380953) internal successors, (377), 21 states have internal predecessors, (377), 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 23:35:51,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:35:51,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-07 23:35:51,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:35:56,783 INFO L124 PetriNetUnfolderBase]: 33758/52405 cut-off events. [2024-11-07 23:35:56,783 INFO L125 PetriNetUnfolderBase]: For 31274/32940 co-relation queries the response was YES. [2024-11-07 23:35:57,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128344 conditions, 52405 events. 33758/52405 cut-off events. For 31274/32940 co-relation queries the response was YES. Maximal size of possible extension queue 1735. Compared 413082 event pairs, 13312 based on Foata normal form. 870/52940 useless extension candidates. Maximal degree in co-relation 127706. Up to 7493 conditions per place. [2024-11-07 23:35:57,290 INFO L140 encePairwiseOnDemand]: 49/62 looper letters, 591 selfloop transitions, 268 changer transitions 40/912 dead transitions. [2024-11-07 23:35:57,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 912 transitions, 8602 flow [2024-11-07 23:35:57,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-07 23:35:57,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2024-11-07 23:35:57,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 1182 transitions. [2024-11-07 23:35:57,295 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4056280027453672 [2024-11-07 23:35:57,295 INFO L175 Difference]: Start difference. First operand has 138 places, 183 transitions, 1586 flow. Second operand 47 states and 1182 transitions. [2024-11-07 23:35:57,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 912 transitions, 8602 flow [2024-11-07 23:35:57,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 912 transitions, 6929 flow, removed 600 selfloop flow, removed 12 redundant places. [2024-11-07 23:35:57,383 INFO L231 Difference]: Finished difference. Result has 184 places, 430 transitions, 3944 flow [2024-11-07 23:35:57,383 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1239, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=3944, PETRI_PLACES=184, PETRI_TRANSITIONS=430} [2024-11-07 23:35:57,384 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 126 predicate places. [2024-11-07 23:35:57,384 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 430 transitions, 3944 flow [2024-11-07 23:35:57,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 17.952380952380953) internal successors, (377), 21 states have internal predecessors, (377), 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 23:35:57,384 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:35:57,384 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:35:57,397 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-07 23:35:57,585 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,SelfDestructingSolverStorable14 [2024-11-07 23:35:57,585 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-07 23:35:57,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:35:57,586 INFO L85 PathProgramCache]: Analyzing trace with hash -553337275, now seen corresponding path program 1 times [2024-11-07 23:35:57,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:35:57,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731584837] [2024-11-07 23:35:57,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:35:57,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:35:57,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:35:57,694 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 23:35:57,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:35:57,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731584837] [2024-11-07 23:35:57,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731584837] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:35:57,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:35:57,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 23:35:57,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473974166] [2024-11-07 23:35:57,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:35:57,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 23:35:57,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:35:57,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 23:35:57,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-07 23:35:57,698 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-11-07 23:35:57,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 430 transitions, 3944 flow. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 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 23:35:57,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:35:57,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-11-07 23:35:57,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:36:01,784 INFO L124 PetriNetUnfolderBase]: 28077/44707 cut-off events. [2024-11-07 23:36:01,784 INFO L125 PetriNetUnfolderBase]: For 47741/48743 co-relation queries the response was YES. [2024-11-07 23:36:02,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115286 conditions, 44707 events. 28077/44707 cut-off events. For 47741/48743 co-relation queries the response was YES. Maximal size of possible extension queue 1494. Compared 354169 event pairs, 12342 based on Foata normal form. 236/44865 useless extension candidates. Maximal degree in co-relation 114697. Up to 19610 conditions per place. [2024-11-07 23:36:02,335 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 414 selfloop transitions, 40 changer transitions 15/485 dead transitions. [2024-11-07 23:36:02,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 485 transitions, 5132 flow [2024-11-07 23:36:02,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 23:36:02,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 23:36:02,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 199 transitions. [2024-11-07 23:36:02,337 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6419354838709678 [2024-11-07 23:36:02,337 INFO L175 Difference]: Start difference. First operand has 184 places, 430 transitions, 3944 flow. Second operand 5 states and 199 transitions. [2024-11-07 23:36:02,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 485 transitions, 5132 flow [2024-11-07 23:36:02,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 485 transitions, 5055 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-11-07 23:36:02,427 INFO L231 Difference]: Finished difference. Result has 183 places, 426 transitions, 3900 flow [2024-11-07 23:36:02,427 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3869, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3900, PETRI_PLACES=183, PETRI_TRANSITIONS=426} [2024-11-07 23:36:02,427 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 125 predicate places. [2024-11-07 23:36:02,427 INFO L471 AbstractCegarLoop]: Abstraction has has 183 places, 426 transitions, 3900 flow [2024-11-07 23:36:02,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 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 23:36:02,428 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:36:02,428 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:36:02,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-07 23:36:02,428 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-07 23:36:02,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:36:02,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1636799628, now seen corresponding path program 1 times [2024-11-07 23:36:02,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:36:02,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250767339] [2024-11-07 23:36:02,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:36:02,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:36:02,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:36:02,507 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 23:36:02,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:36:02,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250767339] [2024-11-07 23:36:02,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250767339] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:36:02,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045878302] [2024-11-07 23:36:02,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:36:02,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:36:02,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:36:02,511 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 23:36:02,512 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 23:36:02,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:36:02,602 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-07 23:36:02,603 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:36:02,735 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 23:36:02,736 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:36:02,862 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 23:36:02,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045878302] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:36:02,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:36:02,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 8] total 18 [2024-11-07 23:36:02,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405296782] [2024-11-07 23:36:02,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:36:02,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-07 23:36:02,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:36:02,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-07 23:36:02,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2024-11-07 23:36:02,956 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-07 23:36:02,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 426 transitions, 3900 flow. Second operand has 19 states, 19 states have (on average 18.526315789473685) internal successors, (352), 19 states have internal predecessors, (352), 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 23:36:02,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:36:02,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-07 23:36:02,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:36:06,738 INFO L124 PetriNetUnfolderBase]: 25309/38811 cut-off events. [2024-11-07 23:36:06,738 INFO L125 PetriNetUnfolderBase]: For 48412/49310 co-relation queries the response was YES. [2024-11-07 23:36:07,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103420 conditions, 38811 events. 25309/38811 cut-off events. For 48412/49310 co-relation queries the response was YES. Maximal size of possible extension queue 1289. Compared 287694 event pairs, 8714 based on Foata normal form. 882/39186 useless extension candidates. Maximal degree in co-relation 102816. Up to 8526 conditions per place. [2024-11-07 23:36:07,206 INFO L140 encePairwiseOnDemand]: 48/62 looper letters, 392 selfloop transitions, 194 changer transitions 12/610 dead transitions. [2024-11-07 23:36:07,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 610 transitions, 5926 flow [2024-11-07 23:36:07,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-07 23:36:07,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-07 23:36:07,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 466 transitions. [2024-11-07 23:36:07,207 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44212523719165087 [2024-11-07 23:36:07,207 INFO L175 Difference]: Start difference. First operand has 183 places, 426 transitions, 3900 flow. Second operand 17 states and 466 transitions. [2024-11-07 23:36:07,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 610 transitions, 5926 flow [2024-11-07 23:36:07,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 610 transitions, 5833 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-07 23:36:07,309 INFO L231 Difference]: Finished difference. Result has 196 places, 427 transitions, 4218 flow [2024-11-07 23:36:07,309 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3817, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4218, PETRI_PLACES=196, PETRI_TRANSITIONS=427} [2024-11-07 23:36:07,310 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 138 predicate places. [2024-11-07 23:36:07,310 INFO L471 AbstractCegarLoop]: Abstraction has has 196 places, 427 transitions, 4218 flow [2024-11-07 23:36:07,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 18.526315789473685) internal successors, (352), 19 states have internal predecessors, (352), 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 23:36:07,310 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:36:07,310 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:36:07,323 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-07 23:36:07,511 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,SelfDestructingSolverStorable16 [2024-11-07 23:36:07,511 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-07 23:36:07,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:36:07,511 INFO L85 PathProgramCache]: Analyzing trace with hash -168509946, now seen corresponding path program 1 times [2024-11-07 23:36:07,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:36:07,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136819196] [2024-11-07 23:36:07,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:36:07,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:36:07,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:36:07,595 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 23:36:07,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:36:07,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136819196] [2024-11-07 23:36:07,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136819196] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:36:07,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815808575] [2024-11-07 23:36:07,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:36:07,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:36:07,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:36:07,599 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 23:36:07,602 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 23:36:07,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:36:07,707 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-07 23:36:07,709 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:36:07,841 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 23:36:07,841 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:36:07,952 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 23:36:07,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815808575] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:36:07,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:36:07,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 17 [2024-11-07 23:36:07,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578420234] [2024-11-07 23:36:07,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:36:07,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-07 23:36:07,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:36:07,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-07 23:36:07,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2024-11-07 23:36:08,050 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-07 23:36:08,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 427 transitions, 4218 flow. Second operand has 18 states, 18 states have (on average 19.055555555555557) internal successors, (343), 18 states have internal predecessors, (343), 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 23:36:08,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:36:08,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-07 23:36:08,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:36:11,397 INFO L124 PetriNetUnfolderBase]: 22650/34631 cut-off events. [2024-11-07 23:36:11,398 INFO L125 PetriNetUnfolderBase]: For 53814/54182 co-relation queries the response was YES. [2024-11-07 23:36:11,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95673 conditions, 34631 events. 22650/34631 cut-off events. For 53814/54182 co-relation queries the response was YES. Maximal size of possible extension queue 1112. Compared 249922 event pairs, 8754 based on Foata normal form. 748/34948 useless extension candidates. Maximal degree in co-relation 95042. Up to 7803 conditions per place. [2024-11-07 23:36:11,816 INFO L140 encePairwiseOnDemand]: 48/62 looper letters, 450 selfloop transitions, 163 changer transitions 32/656 dead transitions. [2024-11-07 23:36:11,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 656 transitions, 6910 flow [2024-11-07 23:36:11,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-07 23:36:11,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-07 23:36:11,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 473 transitions. [2024-11-07 23:36:11,817 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4487666034155598 [2024-11-07 23:36:11,817 INFO L175 Difference]: Start difference. First operand has 196 places, 427 transitions, 4218 flow. Second operand 17 states and 473 transitions. [2024-11-07 23:36:11,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 656 transitions, 6910 flow [2024-11-07 23:36:11,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 656 transitions, 6749 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-11-07 23:36:11,899 INFO L231 Difference]: Finished difference. Result has 203 places, 426 transitions, 4460 flow [2024-11-07 23:36:11,899 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=4123, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4460, PETRI_PLACES=203, PETRI_TRANSITIONS=426} [2024-11-07 23:36:11,900 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 145 predicate places. [2024-11-07 23:36:11,900 INFO L471 AbstractCegarLoop]: Abstraction has has 203 places, 426 transitions, 4460 flow [2024-11-07 23:36:11,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 19.055555555555557) internal successors, (343), 18 states have internal predecessors, (343), 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 23:36:11,900 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:36:11,900 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:36:11,912 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-07 23:36:12,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:36:12,101 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-07 23:36:12,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:36:12,101 INFO L85 PathProgramCache]: Analyzing trace with hash -260381577, now seen corresponding path program 1 times [2024-11-07 23:36:12,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:36:12,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792569503] [2024-11-07 23:36:12,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:36:12,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:36:12,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:36:12,191 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-07 23:36:12,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:36:12,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792569503] [2024-11-07 23:36:12,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792569503] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:36:12,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404376843] [2024-11-07 23:36:12,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:36:12,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:36:12,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:36:12,195 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 23:36:12,196 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 23:36:12,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:36:12,293 INFO L255 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-07 23:36:12,295 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:36:12,382 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 23:36:12,382 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:36:12,471 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 23:36:12,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404376843] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:36:12,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:36:12,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 8] total 18 [2024-11-07 23:36:12,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482084116] [2024-11-07 23:36:12,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:36:12,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-07 23:36:12,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:36:12,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-07 23:36:12,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2024-11-07 23:36:12,565 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-07 23:36:12,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 426 transitions, 4460 flow. Second operand has 19 states, 19 states have (on average 18.36842105263158) internal successors, (349), 19 states have internal predecessors, (349), 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 23:36:12,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:36:12,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-07 23:36:12,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:36:18,888 INFO L124 PetriNetUnfolderBase]: 42605/64528 cut-off events. [2024-11-07 23:36:18,889 INFO L125 PetriNetUnfolderBase]: For 109402/110136 co-relation queries the response was YES. [2024-11-07 23:36:19,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180402 conditions, 64528 events. 42605/64528 cut-off events. For 109402/110136 co-relation queries the response was YES. Maximal size of possible extension queue 1814. Compared 492051 event pairs, 13463 based on Foata normal form. 854/65185 useless extension candidates. Maximal degree in co-relation 179753. Up to 12343 conditions per place. [2024-11-07 23:36:19,746 INFO L140 encePairwiseOnDemand]: 49/62 looper letters, 274 selfloop transitions, 348 changer transitions 20/653 dead transitions. [2024-11-07 23:36:19,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 653 transitions, 6848 flow [2024-11-07 23:36:19,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-07 23:36:19,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-07 23:36:19,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 428 transitions. [2024-11-07 23:36:19,747 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4930875576036866 [2024-11-07 23:36:19,747 INFO L175 Difference]: Start difference. First operand has 203 places, 426 transitions, 4460 flow. Second operand 14 states and 428 transitions. [2024-11-07 23:36:19,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 653 transitions, 6848 flow [2024-11-07 23:36:19,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 653 transitions, 6574 flow, removed 20 selfloop flow, removed 11 redundant places. [2024-11-07 23:36:19,921 INFO L231 Difference]: Finished difference. Result has 206 places, 431 transitions, 5003 flow [2024-11-07 23:36:19,922 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=4272, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=342, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=5003, PETRI_PLACES=206, PETRI_TRANSITIONS=431} [2024-11-07 23:36:19,922 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 148 predicate places. [2024-11-07 23:36:19,922 INFO L471 AbstractCegarLoop]: Abstraction has has 206 places, 431 transitions, 5003 flow [2024-11-07 23:36:19,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 18.36842105263158) internal successors, (349), 19 states have internal predecessors, (349), 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 23:36:19,922 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:36:19,922 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:36:19,934 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 23:36:20,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:36:20,123 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-07 23:36:20,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:36:20,123 INFO L85 PathProgramCache]: Analyzing trace with hash -754914406, now seen corresponding path program 2 times [2024-11-07 23:36:20,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:36:20,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515926187] [2024-11-07 23:36:20,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:36:20,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:36:20,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:36:20,223 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-07 23:36:20,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:36:20,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515926187] [2024-11-07 23:36:20,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515926187] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:36:20,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266950101] [2024-11-07 23:36:20,224 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 23:36:20,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:36:20,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:36:20,226 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 23:36:20,228 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 23:36:20,319 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-07 23:36:20,319 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 23:36:20,320 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-07 23:36:20,322 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:36:20,378 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-07 23:36:20,379 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:36:20,425 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-07 23:36:20,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266950101] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:36:20,426 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:36:20,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 7 [2024-11-07 23:36:20,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609793905] [2024-11-07 23:36:20,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:36:20,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-07 23:36:20,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:36:20,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-07 23:36:20,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-07 23:36:20,436 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 62 [2024-11-07 23:36:20,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 431 transitions, 5003 flow. Second operand has 9 states, 9 states have (on average 25.333333333333332) internal successors, (228), 9 states have internal predecessors, (228), 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 23:36:20,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:36:20,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 62 [2024-11-07 23:36:20,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand