./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_24-sound_lock_racing.i --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/goblint-regression/28-race_reach_24-sound_lock_racing.i', '-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', '1eea0d699fc30cae440905f5eeea19b8e9e5d0b5cc249e9ffded8d356549b279'] 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/goblint-regression/28-race_reach_24-sound_lock_racing.i -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 1eea0d699fc30cae440905f5eeea19b8e9e5d0b5cc249e9ffded8d356549b279 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 23:33:48,101 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 23:33:48,173 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-07 23:33:48,183 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 23:33:48,183 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 23:33:48,207 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 23:33:48,208 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 23:33:48,208 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 23:33:48,208 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 23:33:48,209 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 23:33:48,209 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 23:33:48,209 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 23:33:48,209 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 23:33:48,211 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 23:33:48,211 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 23:33:48,212 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 23:33:48,212 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 23:33:48,212 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 23:33:48,212 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 23:33:48,212 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 23:33:48,212 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 23:33:48,212 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 23:33:48,212 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 23:33:48,213 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 23:33:48,213 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 23:33:48,213 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-07 23:33:48,213 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-07 23:33:48,213 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 23:33:48,213 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 23:33:48,213 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 23:33:48,213 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 23:33:48,213 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 23:33:48,213 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 23:33:48,213 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 23:33:48,213 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 23:33:48,213 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 23:33:48,213 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 23:33:48,213 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 23:33:48,213 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 23:33:48,214 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 23:33:48,214 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 23:33:48,214 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 23:33:48,214 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 23:33:48,214 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 23:33:48,214 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 -> 1eea0d699fc30cae440905f5eeea19b8e9e5d0b5cc249e9ffded8d356549b279 [2024-11-07 23:33:48,527 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 23:33:48,535 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 23:33:48,537 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 23:33:48,538 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 23:33:48,538 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 23:33:48,539 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_24-sound_lock_racing.i [2024-11-07 23:33:49,873 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 23:33:50,142 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 23:33:50,143 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_24-sound_lock_racing.i [2024-11-07 23:33:50,154 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/858f49cc3/cbb29475daec461e85221e12565f5140/FLAGde8b4f1c4 [2024-11-07 23:33:50,170 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/858f49cc3/cbb29475daec461e85221e12565f5140 [2024-11-07 23:33:50,173 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 23:33:50,175 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 23:33:50,177 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 23:33:50,177 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 23:33:50,182 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 23:33:50,183 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:33:50" (1/1) ... [2024-11-07 23:33:50,185 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52f6845b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:50, skipping insertion in model container [2024-11-07 23:33:50,185 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:33:50" (1/1) ... [2024-11-07 23:33:50,222 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 23:33:50,557 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 23:33:50,578 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 23:33:50,614 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 23:33:50,652 INFO L204 MainTranslator]: Completed translation [2024-11-07 23:33:50,652 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:50 WrapperNode [2024-11-07 23:33:50,653 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 23:33:50,654 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 23:33:50,654 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 23:33:50,654 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 23:33:50,659 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:50" (1/1) ... [2024-11-07 23:33:50,669 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:50" (1/1) ... [2024-11-07 23:33:50,694 INFO L138 Inliner]: procedures = 171, calls = 42, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 96 [2024-11-07 23:33:50,695 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 23:33:50,695 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 23:33:50,696 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 23:33:50,696 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 23:33:50,703 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:50" (1/1) ... [2024-11-07 23:33:50,703 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:50" (1/1) ... [2024-11-07 23:33:50,712 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:50" (1/1) ... [2024-11-07 23:33:50,734 INFO L175 MemorySlicer]: Split 19 memory accesses to 4 slices as follows [2, 5, 10, 2]. 53 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 10, 0]. The 1 writes are split as follows [0, 0, 0, 1]. [2024-11-07 23:33:50,734 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:50" (1/1) ... [2024-11-07 23:33:50,734 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:50" (1/1) ... [2024-11-07 23:33:50,740 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:50" (1/1) ... [2024-11-07 23:33:50,748 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:50" (1/1) ... [2024-11-07 23:33:50,749 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:50" (1/1) ... [2024-11-07 23:33:50,750 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:50" (1/1) ... [2024-11-07 23:33:50,754 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 23:33:50,758 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 23:33:50,759 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 23:33:50,759 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 23:33:50,760 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:50" (1/1) ... [2024-11-07 23:33:50,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 23:33:50,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:33:50,793 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 23:33:50,799 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 23:33:50,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-07 23:33:50,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-07 23:33:50,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-07 23:33:50,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-07 23:33:50,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-07 23:33:50,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-07 23:33:50,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-07 23:33:50,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-07 23:33:50,817 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-07 23:33:50,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 23:33:50,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-07 23:33:50,817 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-07 23:33:50,817 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-07 23:33:50,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-07 23:33:50,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 23:33:50,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-07 23:33:50,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-07 23:33:50,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-07 23:33:50,818 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-07 23:33:50,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 23:33:50,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 23:33:50,819 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 23:33:50,969 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 23:33:50,971 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 23:33:51,276 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 23:33:51,277 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 23:33:51,487 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 23:33:51,487 INFO L316 CfgBuilder]: Removed 10 assume(true) statements. [2024-11-07 23:33:51,487 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:33:51 BoogieIcfgContainer [2024-11-07 23:33:51,488 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 23:33:51,491 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 23:33:51,491 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 23:33:51,495 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 23:33:51,496 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 11:33:50" (1/3) ... [2024-11-07 23:33:51,496 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76b60c73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:33:51, skipping insertion in model container [2024-11-07 23:33:51,496 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:50" (2/3) ... [2024-11-07 23:33:51,497 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76b60c73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:33:51, skipping insertion in model container [2024-11-07 23:33:51,497 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:33:51" (3/3) ... [2024-11-07 23:33:51,498 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_24-sound_lock_racing.i [2024-11-07 23:33:51,510 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 23:33:51,511 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-07 23:33:51,511 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 23:33:51,563 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-07 23:33:51,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 60 transitions, 127 flow [2024-11-07 23:33:51,634 INFO L124 PetriNetUnfolderBase]: 11/75 cut-off events. [2024-11-07 23:33:51,635 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-07 23:33:51,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 75 events. 11/75 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 217 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 51. Up to 4 conditions per place. [2024-11-07 23:33:51,639 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 60 transitions, 127 flow [2024-11-07 23:33:51,643 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 59 transitions, 125 flow [2024-11-07 23:33:51,654 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 23:33:51,671 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;@46289f65, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 23:33:51,671 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-11-07 23:33:51,680 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 23:33:51,681 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-11-07 23:33:51,681 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 23:33:51,681 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:33:51,682 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-07 23:33:51,682 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-07 23:33:51,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:33:51,686 INFO L85 PathProgramCache]: Analyzing trace with hash 349853884, now seen corresponding path program 1 times [2024-11-07 23:33:51,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:33:51,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666793943] [2024-11-07 23:33:51,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:33:51,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:33:51,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:33:52,037 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 23:33:52,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:33:52,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666793943] [2024-11-07 23:33:52,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666793943] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:33:52,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:33:52,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 23:33:52,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346018077] [2024-11-07 23:33:52,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:33:52,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:33:52,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:33:52,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:33:52,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:33:52,086 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 60 [2024-11-07 23:33:52,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 59 transitions, 125 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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 23:33:52,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:33:52,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 60 [2024-11-07 23:33:52,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:33:52,314 INFO L124 PetriNetUnfolderBase]: 132/361 cut-off events. [2024-11-07 23:33:52,315 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-07 23:33:52,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 658 conditions, 361 events. 132/361 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1719 event pairs, 20 based on Foata normal form. 76/410 useless extension candidates. Maximal degree in co-relation 630. Up to 255 conditions per place. [2024-11-07 23:33:52,319 INFO L140 encePairwiseOnDemand]: 46/60 looper letters, 46 selfloop transitions, 3 changer transitions 0/72 dead transitions. [2024-11-07 23:33:52,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 72 transitions, 249 flow [2024-11-07 23:33:52,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:33:52,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:33:52,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 164 transitions. [2024-11-07 23:33:52,339 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6833333333333333 [2024-11-07 23:33:52,341 INFO L175 Difference]: Start difference. First operand has 54 places, 59 transitions, 125 flow. Second operand 4 states and 164 transitions. [2024-11-07 23:33:52,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 72 transitions, 249 flow [2024-11-07 23:33:52,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 72 transitions, 249 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 23:33:52,353 INFO L231 Difference]: Finished difference. Result has 56 places, 49 transitions, 115 flow [2024-11-07 23:33:52,355 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=115, PETRI_PLACES=56, PETRI_TRANSITIONS=49} [2024-11-07 23:33:52,361 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 2 predicate places. [2024-11-07 23:33:52,361 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 49 transitions, 115 flow [2024-11-07 23:33:52,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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 23:33:52,361 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:33:52,362 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-07 23:33:52,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 23:33:52,362 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-07 23:33:52,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:33:52,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1388177240, now seen corresponding path program 1 times [2024-11-07 23:33:52,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:33:52,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147456322] [2024-11-07 23:33:52,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:33:52,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:33:52,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 23:33:52,408 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-07 23:33:52,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 23:33:52,459 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-07 23:33:52,461 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-07 23:33:52,463 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-11-07 23:33:52,466 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2024-11-07 23:33:52,466 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2024-11-07 23:33:52,467 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2024-11-07 23:33:52,467 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2024-11-07 23:33:52,467 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2024-11-07 23:33:52,467 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2024-11-07 23:33:52,467 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2024-11-07 23:33:52,467 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2024-11-07 23:33:52,468 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2024-11-07 23:33:52,468 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2024-11-07 23:33:52,468 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2024-11-07 23:33:52,468 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2024-11-07 23:33:52,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 23:33:52,469 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-07 23:33:52,473 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-07 23:33:52,473 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-07 23:33:52,497 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-07 23:33:52,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 93 transitions, 202 flow [2024-11-07 23:33:52,528 INFO L124 PetriNetUnfolderBase]: 21/142 cut-off events. [2024-11-07 23:33:52,528 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-07 23:33:52,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 142 events. 21/142 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 504 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 91. Up to 6 conditions per place. [2024-11-07 23:33:52,531 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 93 transitions, 202 flow [2024-11-07 23:33:52,533 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 93 transitions, 202 flow [2024-11-07 23:33:52,535 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 23:33:52,536 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;@46289f65, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 23:33:52,537 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-11-07 23:33:52,550 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 23:33:52,551 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-11-07 23:33:52,551 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 23:33:52,552 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:33:52,552 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-07 23:33:52,553 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-07 23:33:52,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:33:52,555 INFO L85 PathProgramCache]: Analyzing trace with hash 438634040, now seen corresponding path program 1 times [2024-11-07 23:33:52,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:33:52,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135717754] [2024-11-07 23:33:52,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:33:52,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:33:52,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:33:52,663 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 23:33:52,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:33:52,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135717754] [2024-11-07 23:33:52,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135717754] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:33:52,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:33:52,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 23:33:52,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134323710] [2024-11-07 23:33:52,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:33:52,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:33:52,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:33:52,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:33:52,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:33:52,675 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 93 [2024-11-07 23:33:52,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 93 transitions, 202 flow. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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 23:33:52,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:33:52,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 93 [2024-11-07 23:33:52,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:33:53,784 INFO L124 PetriNetUnfolderBase]: 4028/8614 cut-off events. [2024-11-07 23:33:53,784 INFO L125 PetriNetUnfolderBase]: For 84/84 co-relation queries the response was YES. [2024-11-07 23:33:53,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15092 conditions, 8614 events. 4028/8614 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 72019 event pairs, 1892 based on Foata normal form. 1643/9359 useless extension candidates. Maximal degree in co-relation 1207. Up to 6374 conditions per place. [2024-11-07 23:33:53,838 INFO L140 encePairwiseOnDemand]: 73/93 looper letters, 64 selfloop transitions, 3 changer transitions 0/104 dead transitions. [2024-11-07 23:33:53,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 104 transitions, 358 flow [2024-11-07 23:33:53,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:33:53,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:33:53,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 244 transitions. [2024-11-07 23:33:53,843 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6559139784946236 [2024-11-07 23:33:53,843 INFO L175 Difference]: Start difference. First operand has 82 places, 93 transitions, 202 flow. Second operand 4 states and 244 transitions. [2024-11-07 23:33:53,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 104 transitions, 358 flow [2024-11-07 23:33:53,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 104 transitions, 358 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 23:33:53,847 INFO L231 Difference]: Finished difference. Result has 87 places, 81 transitions, 198 flow [2024-11-07 23:33:53,848 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=198, PETRI_PLACES=87, PETRI_TRANSITIONS=81} [2024-11-07 23:33:53,849 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, 5 predicate places. [2024-11-07 23:33:53,849 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 81 transitions, 198 flow [2024-11-07 23:33:53,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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 23:33:53,849 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:33:53,849 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-07 23:33:53,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 23:33:53,850 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-07 23:33:53,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:33:53,850 INFO L85 PathProgramCache]: Analyzing trace with hash 760991838, now seen corresponding path program 1 times [2024-11-07 23:33:53,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:33:53,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603022231] [2024-11-07 23:33:53,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:33:53,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:33:53,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:33:54,020 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:33:54,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:33:54,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603022231] [2024-11-07 23:33:54,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603022231] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:33:54,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864963610] [2024-11-07 23:33:54,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:33:54,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:33:54,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:33:54,024 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 23:33:54,025 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 23:33:54,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:33:54,126 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-07 23:33:54,128 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:33:54,174 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:33:54,174 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 23:33:54,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864963610] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:33:54,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 23:33:54,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-07 23:33:54,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123531061] [2024-11-07 23:33:54,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:33:54,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 23:33:54,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:33:54,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 23:33:54,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-07 23:33:54,184 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 93 [2024-11-07 23:33:54,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 81 transitions, 198 flow. Second operand has 6 states, 6 states have (on average 38.5) internal successors, (231), 6 states have internal predecessors, (231), 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 23:33:54,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:33:54,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 93 [2024-11-07 23:33:54,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:33:55,245 INFO L124 PetriNetUnfolderBase]: 3764/7352 cut-off events. [2024-11-07 23:33:55,245 INFO L125 PetriNetUnfolderBase]: For 624/624 co-relation queries the response was YES. [2024-11-07 23:33:55,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14062 conditions, 7352 events. 3764/7352 cut-off events. For 624/624 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 57965 event pairs, 252 based on Foata normal form. 144/7012 useless extension candidates. Maximal degree in co-relation 1168. Up to 4012 conditions per place. [2024-11-07 23:33:55,297 INFO L140 encePairwiseOnDemand]: 88/93 looper letters, 104 selfloop transitions, 6 changer transitions 0/147 dead transitions. [2024-11-07 23:33:55,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 147 transitions, 548 flow [2024-11-07 23:33:55,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 23:33:55,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 23:33:55,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 333 transitions. [2024-11-07 23:33:55,302 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5967741935483871 [2024-11-07 23:33:55,302 INFO L175 Difference]: Start difference. First operand has 87 places, 81 transitions, 198 flow. Second operand 6 states and 333 transitions. [2024-11-07 23:33:55,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 147 transitions, 548 flow [2024-11-07 23:33:55,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 147 transitions, 546 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 23:33:55,309 INFO L231 Difference]: Finished difference. Result has 90 places, 80 transitions, 204 flow [2024-11-07 23:33:55,310 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=204, PETRI_PLACES=90, PETRI_TRANSITIONS=80} [2024-11-07 23:33:55,311 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, 8 predicate places. [2024-11-07 23:33:55,311 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 80 transitions, 204 flow [2024-11-07 23:33:55,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.5) internal successors, (231), 6 states have internal predecessors, (231), 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 23:33:55,312 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:33:55,312 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:33:55,331 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-07 23:33:55,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:33:55,513 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-07 23:33:55,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:33:55,514 INFO L85 PathProgramCache]: Analyzing trace with hash -2032975205, now seen corresponding path program 1 times [2024-11-07 23:33:55,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:33:55,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792414976] [2024-11-07 23:33:55,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:33:55,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:33:55,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:33:55,590 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 23:33:55,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:33:55,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792414976] [2024-11-07 23:33:55,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792414976] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:33:55,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:33:55,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 23:33:55,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655647192] [2024-11-07 23:33:55,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:33:55,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:33:55,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:33:55,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:33:55,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:33:55,599 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 93 [2024-11-07 23:33:55,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 80 transitions, 204 flow. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 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 23:33:55,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:33:55,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 93 [2024-11-07 23:33:55,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:33:56,794 INFO L124 PetriNetUnfolderBase]: 5385/11251 cut-off events. [2024-11-07 23:33:56,795 INFO L125 PetriNetUnfolderBase]: For 1173/1334 co-relation queries the response was YES. [2024-11-07 23:33:56,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20759 conditions, 11251 events. 5385/11251 cut-off events. For 1173/1334 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 97189 event pairs, 1446 based on Foata normal form. 209/10503 useless extension candidates. Maximal degree in co-relation 16761. Up to 5441 conditions per place. [2024-11-07 23:33:56,852 INFO L140 encePairwiseOnDemand]: 84/93 looper letters, 118 selfloop transitions, 12 changer transitions 0/168 dead transitions. [2024-11-07 23:33:56,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 168 transitions, 694 flow [2024-11-07 23:33:56,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 23:33:56,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 23:33:56,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 321 transitions. [2024-11-07 23:33:56,855 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6903225806451613 [2024-11-07 23:33:56,855 INFO L175 Difference]: Start difference. First operand has 90 places, 80 transitions, 204 flow. Second operand 5 states and 321 transitions. [2024-11-07 23:33:56,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 168 transitions, 694 flow [2024-11-07 23:33:56,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 168 transitions, 671 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-11-07 23:33:56,867 INFO L231 Difference]: Finished difference. Result has 94 places, 91 transitions, 286 flow [2024-11-07 23:33:56,868 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=286, PETRI_PLACES=94, PETRI_TRANSITIONS=91} [2024-11-07 23:33:56,869 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, 12 predicate places. [2024-11-07 23:33:56,869 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 91 transitions, 286 flow [2024-11-07 23:33:56,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 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 23:33:56,870 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:33:56,870 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-11-07 23:33:56,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-07 23:33:56,871 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-07 23:33:56,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:33:56,871 INFO L85 PathProgramCache]: Analyzing trace with hash 2115910986, now seen corresponding path program 1 times [2024-11-07 23:33:56,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:33:56,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416218232] [2024-11-07 23:33:56,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:33:56,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:33:56,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:33:56,943 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 23:33:56,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:33:56,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416218232] [2024-11-07 23:33:56,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416218232] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:33:56,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:33:56,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 23:33:56,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251064810] [2024-11-07 23:33:56,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:33:56,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:33:56,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:33:56,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:33:56,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:33:56,953 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 93 [2024-11-07 23:33:56,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 91 transitions, 286 flow. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 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 23:33:56,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:33:56,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 93 [2024-11-07 23:33:56,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:33:58,179 INFO L124 PetriNetUnfolderBase]: 5235/10715 cut-off events. [2024-11-07 23:33:58,181 INFO L125 PetriNetUnfolderBase]: For 3989/3993 co-relation queries the response was YES. [2024-11-07 23:33:58,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22510 conditions, 10715 events. 5235/10715 cut-off events. For 3989/3993 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 90605 event pairs, 1118 based on Foata normal form. 152/10234 useless extension candidates. Maximal degree in co-relation 17039. Up to 7245 conditions per place. [2024-11-07 23:33:58,231 INFO L140 encePairwiseOnDemand]: 88/93 looper letters, 102 selfloop transitions, 6 changer transitions 0/145 dead transitions. [2024-11-07 23:33:58,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 145 transitions, 672 flow [2024-11-07 23:33:58,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:33:58,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:33:58,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 234 transitions. [2024-11-07 23:33:58,235 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6290322580645161 [2024-11-07 23:33:58,235 INFO L175 Difference]: Start difference. First operand has 94 places, 91 transitions, 286 flow. Second operand 4 states and 234 transitions. [2024-11-07 23:33:58,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 145 transitions, 672 flow [2024-11-07 23:33:58,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 145 transitions, 668 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-07 23:33:58,246 INFO L231 Difference]: Finished difference. Result has 96 places, 91 transitions, 298 flow [2024-11-07 23:33:58,247 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=298, PETRI_PLACES=96, PETRI_TRANSITIONS=91} [2024-11-07 23:33:58,248 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, 14 predicate places. [2024-11-07 23:33:58,248 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 91 transitions, 298 flow [2024-11-07 23:33:58,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 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 23:33:58,249 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:33:58,249 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2024-11-07 23:33:58,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-07 23:33:58,249 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-07 23:33:58,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:33:58,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1870941858, now seen corresponding path program 1 times [2024-11-07 23:33:58,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:33:58,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785001072] [2024-11-07 23:33:58,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:33:58,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:33:58,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 23:33:58,275 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-07 23:33:58,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 23:33:58,296 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-07 23:33:58,300 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-07 23:33:58,301 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2024-11-07 23:33:58,303 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2024-11-07 23:33:58,303 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2024-11-07 23:33:58,303 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2024-11-07 23:33:58,303 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2024-11-07 23:33:58,303 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2024-11-07 23:33:58,303 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2024-11-07 23:33:58,304 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2024-11-07 23:33:58,304 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2024-11-07 23:33:58,304 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2024-11-07 23:33:58,304 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2024-11-07 23:33:58,304 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2024-11-07 23:33:58,304 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2024-11-07 23:33:58,304 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2024-11-07 23:33:58,304 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2024-11-07 23:33:58,304 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2024-11-07 23:33:58,304 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2024-11-07 23:33:58,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-07 23:33:58,304 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-07 23:33:58,305 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-07 23:33:58,305 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-07 23:33:58,341 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-07 23:33:58,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 126 transitions, 279 flow [2024-11-07 23:33:58,368 INFO L124 PetriNetUnfolderBase]: 34/228 cut-off events. [2024-11-07 23:33:58,369 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-07 23:33:58,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 228 events. 34/228 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 920 event pairs, 1 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 157. Up to 12 conditions per place. [2024-11-07 23:33:58,371 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 126 transitions, 279 flow [2024-11-07 23:33:58,373 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 126 transitions, 279 flow [2024-11-07 23:33:58,374 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 23:33:58,375 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;@46289f65, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 23:33:58,375 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-11-07 23:33:58,377 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 23:33:58,378 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-11-07 23:33:58,378 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 23:33:58,378 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:33:58,378 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-07 23:33:58,378 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-07 23:33:58,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:33:58,379 INFO L85 PathProgramCache]: Analyzing trace with hash 558906261, now seen corresponding path program 1 times [2024-11-07 23:33:58,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:33:58,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139724668] [2024-11-07 23:33:58,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:33:58,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:33:58,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:33:58,429 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 23:33:58,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:33:58,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139724668] [2024-11-07 23:33:58,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139724668] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:33:58,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:33:58,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 23:33:58,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490644827] [2024-11-07 23:33:58,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:33:58,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:33:58,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:33:58,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:33:58,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:33:58,442 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 126 [2024-11-07 23:33:58,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 126 transitions, 279 flow. Second operand has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 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 23:33:58,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:33:58,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 126 [2024-11-07 23:33:58,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:34:07,074 INFO L124 PetriNetUnfolderBase]: 76325/138173 cut-off events. [2024-11-07 23:34:07,075 INFO L125 PetriNetUnfolderBase]: For 1879/1879 co-relation queries the response was YES. [2024-11-07 23:34:07,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245270 conditions, 138173 events. 76325/138173 cut-off events. For 1879/1879 co-relation queries the response was YES. Maximal size of possible extension queue 3150. Compared 1452180 event pairs, 49600 based on Foata normal form. 29480/155039 useless extension candidates. Maximal degree in co-relation 15960. Up to 105935 conditions per place. [2024-11-07 23:34:08,117 INFO L140 encePairwiseOnDemand]: 100/126 looper letters, 77 selfloop transitions, 3 changer transitions 0/131 dead transitions. [2024-11-07 23:34:08,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 131 transitions, 449 flow [2024-11-07 23:34:08,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:34:08,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:34:08,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 319 transitions. [2024-11-07 23:34:08,120 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6329365079365079 [2024-11-07 23:34:08,120 INFO L175 Difference]: Start difference. First operand has 110 places, 126 transitions, 279 flow. Second operand 4 states and 319 transitions. [2024-11-07 23:34:08,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 131 transitions, 449 flow [2024-11-07 23:34:08,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 131 transitions, 449 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 23:34:08,127 INFO L231 Difference]: Finished difference. Result has 115 places, 108 transitions, 263 flow [2024-11-07 23:34:08,128 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=263, PETRI_PLACES=115, PETRI_TRANSITIONS=108} [2024-11-07 23:34:08,128 INFO L277 CegarLoopForPetriNet]: 110 programPoint places, 5 predicate places. [2024-11-07 23:34:08,128 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 108 transitions, 263 flow [2024-11-07 23:34:08,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 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 23:34:08,129 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:34:08,129 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:34:08,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-07 23:34:08,129 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-07 23:34:08,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:34:08,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1772863142, now seen corresponding path program 1 times [2024-11-07 23:34:08,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:34:08,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269294227] [2024-11-07 23:34:08,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:34:08,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:34:08,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:34:08,206 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 23:34:08,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:34:08,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269294227] [2024-11-07 23:34:08,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269294227] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:34:08,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:34:08,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 23:34:08,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569005454] [2024-11-07 23:34:08,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:34:08,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:34:08,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:34:08,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:34:08,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:34:08,212 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 126 [2024-11-07 23:34:08,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 108 transitions, 263 flow. Second operand has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 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 23:34:08,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:34:08,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 126 [2024-11-07 23:34:08,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:34:19,666 INFO L124 PetriNetUnfolderBase]: 111387/192543 cut-off events. [2024-11-07 23:34:19,666 INFO L125 PetriNetUnfolderBase]: For 7138/11655 co-relation queries the response was YES. [2024-11-07 23:34:20,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354539 conditions, 192543 events. 111387/192543 cut-off events. For 7138/11655 co-relation queries the response was YES. Maximal size of possible extension queue 4534. Compared 2001945 event pairs, 38008 based on Foata normal form. 2848/180517 useless extension candidates. Maximal degree in co-relation 354437. Up to 101431 conditions per place. [2024-11-07 23:34:20,923 INFO L140 encePairwiseOnDemand]: 115/126 looper letters, 170 selfloop transitions, 16 changer transitions 0/239 dead transitions. [2024-11-07 23:34:20,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 239 transitions, 967 flow [2024-11-07 23:34:20,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 23:34:20,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 23:34:20,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 447 transitions. [2024-11-07 23:34:20,925 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7095238095238096 [2024-11-07 23:34:20,925 INFO L175 Difference]: Start difference. First operand has 115 places, 108 transitions, 263 flow. Second operand 5 states and 447 transitions. [2024-11-07 23:34:20,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 239 transitions, 967 flow [2024-11-07 23:34:20,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 239 transitions, 963 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 23:34:20,938 INFO L231 Difference]: Finished difference. Result has 122 places, 123 transitions, 389 flow [2024-11-07 23:34:20,938 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=389, PETRI_PLACES=122, PETRI_TRANSITIONS=123} [2024-11-07 23:34:20,940 INFO L277 CegarLoopForPetriNet]: 110 programPoint places, 12 predicate places. [2024-11-07 23:34:20,940 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 123 transitions, 389 flow [2024-11-07 23:34:20,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 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 23:34:20,940 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:34:20,941 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-07 23:34:20,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-07 23:34:20,941 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-07 23:34:20,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:34:20,941 INFO L85 PathProgramCache]: Analyzing trace with hash -3693954, now seen corresponding path program 1 times [2024-11-07 23:34:20,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:34:20,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093156710] [2024-11-07 23:34:20,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:34:20,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:34:20,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:34:21,014 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:34:21,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:34:21,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093156710] [2024-11-07 23:34:21,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093156710] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:34:21,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189308729] [2024-11-07 23:34:21,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:34:21,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:34:21,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:34:21,018 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 23:34:21,020 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 23:34:21,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:34:21,100 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-07 23:34:21,101 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:34:21,126 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:34:21,126 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 23:34:21,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189308729] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:34:21,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 23:34:21,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-07 23:34:21,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917078768] [2024-11-07 23:34:21,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:34:21,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 23:34:21,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:34:21,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 23:34:21,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-07 23:34:21,134 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 126 [2024-11-07 23:34:21,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 123 transitions, 389 flow. Second operand has 6 states, 6 states have (on average 52.5) internal successors, (315), 6 states have internal predecessors, (315), 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 23:34:21,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:34:21,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 126 [2024-11-07 23:34:21,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:34:33,820 INFO L124 PetriNetUnfolderBase]: 115196/195528 cut-off events. [2024-11-07 23:34:33,820 INFO L125 PetriNetUnfolderBase]: For 77099/77149 co-relation queries the response was YES. [2024-11-07 23:34:34,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 422460 conditions, 195528 events. 115196/195528 cut-off events. For 77099/77149 co-relation queries the response was YES. Maximal size of possible extension queue 4614. Compared 2012803 event pairs, 33963 based on Foata normal form. 2152/184260 useless extension candidates. Maximal degree in co-relation 249760. Up to 124175 conditions per place. [2024-11-07 23:34:35,263 INFO L140 encePairwiseOnDemand]: 121/126 looper letters, 168 selfloop transitions, 6 changer transitions 0/225 dead transitions. [2024-11-07 23:34:35,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 225 transitions, 1059 flow [2024-11-07 23:34:35,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 23:34:35,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 23:34:35,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 452 transitions. [2024-11-07 23:34:35,266 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5978835978835979 [2024-11-07 23:34:35,266 INFO L175 Difference]: Start difference. First operand has 122 places, 123 transitions, 389 flow. Second operand 6 states and 452 transitions. [2024-11-07 23:34:35,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 225 transitions, 1059 flow [2024-11-07 23:34:35,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 225 transitions, 1059 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 23:34:35,306 INFO L231 Difference]: Finished difference. Result has 126 places, 122 transitions, 397 flow [2024-11-07 23:34:35,307 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=397, PETRI_PLACES=126, PETRI_TRANSITIONS=122} [2024-11-07 23:34:35,307 INFO L277 CegarLoopForPetriNet]: 110 programPoint places, 16 predicate places. [2024-11-07 23:34:35,308 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 122 transitions, 397 flow [2024-11-07 23:34:35,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 52.5) internal successors, (315), 6 states have internal predecessors, (315), 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 23:34:35,308 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:34:35,308 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-11-07 23:34:35,321 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 23:34:35,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:34:35,510 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-07 23:34:35,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:34:35,510 INFO L85 PathProgramCache]: Analyzing trace with hash -114511960, now seen corresponding path program 1 times [2024-11-07 23:34:35,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:34:35,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009306536] [2024-11-07 23:34:35,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:34:35,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:34:35,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:34:35,564 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 23:34:35,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:34:35,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009306536] [2024-11-07 23:34:35,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009306536] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:34:35,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:34:35,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 23:34:35,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556283051] [2024-11-07 23:34:35,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:34:35,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:34:35,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:34:35,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:34:35,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:34:35,574 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 126 [2024-11-07 23:34:35,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 122 transitions, 397 flow. Second operand has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 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 23:34:35,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:34:35,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 126 [2024-11-07 23:34:35,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand