./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_21-deref_read_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_21-deref_read_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', 'cb010ae024b402436affeb854f96a5f9e0df3d8ec2cfe8b3a7f33676b7169a2c'] 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_21-deref_read_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 cb010ae024b402436affeb854f96a5f9e0df3d8ec2cfe8b3a7f33676b7169a2c --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 23:33:38,021 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 23:33:38,110 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-07 23:33:38,115 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 23:33:38,116 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 23:33:38,142 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 23:33:38,144 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 23:33:38,144 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 23:33:38,144 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 23:33:38,145 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 23:33:38,145 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 23:33:38,145 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 23:33:38,146 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 23:33:38,146 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 23:33:38,146 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 23:33:38,146 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 23:33:38,147 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 23:33:38,147 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 23:33:38,147 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 23:33:38,147 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 23:33:38,147 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 23:33:38,147 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 23:33:38,147 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 23:33:38,148 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 23:33:38,148 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 23:33:38,148 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-07 23:33:38,148 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-07 23:33:38,148 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 23:33:38,148 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 23:33:38,148 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 23:33:38,149 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 23:33:38,149 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 23:33:38,149 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 23:33:38,149 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 23:33:38,149 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 23:33:38,149 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 23:33:38,150 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 23:33:38,150 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 23:33:38,150 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 23:33:38,150 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 23:33:38,151 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 23:33:38,151 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 23:33:38,151 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 23:33:38,151 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 23:33:38,151 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 -> cb010ae024b402436affeb854f96a5f9e0df3d8ec2cfe8b3a7f33676b7169a2c [2024-11-07 23:33:38,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 23:33:38,446 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 23:33:38,448 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 23:33:38,449 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 23:33:38,450 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 23:33:38,452 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_21-deref_read_racing.i [2024-11-07 23:33:39,704 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 23:33:39,968 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 23:33:39,968 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_21-deref_read_racing.i [2024-11-07 23:33:39,978 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9c5c5e47e/1a683b9dbcb14283b8c2030db32aabc6/FLAGd492d55fa [2024-11-07 23:33:39,996 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9c5c5e47e/1a683b9dbcb14283b8c2030db32aabc6 [2024-11-07 23:33:39,999 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 23:33:40,000 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 23:33:40,001 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 23:33:40,001 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 23:33:40,007 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 23:33:40,008 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:33:39" (1/1) ... [2024-11-07 23:33:40,010 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35e073b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:40, skipping insertion in model container [2024-11-07 23:33:40,011 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:33:39" (1/1) ... [2024-11-07 23:33:40,046 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 23:33:40,307 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 23:33:40,320 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 23:33:40,362 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 23:33:40,411 INFO L204 MainTranslator]: Completed translation [2024-11-07 23:33:40,412 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:40 WrapperNode [2024-11-07 23:33:40,412 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 23:33:40,413 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 23:33:40,413 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 23:33:40,413 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 23:33:40,420 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:40" (1/1) ... [2024-11-07 23:33:40,433 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:40" (1/1) ... [2024-11-07 23:33:40,449 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2024-11-07 23:33:40,450 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 23:33:40,450 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 23:33:40,451 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 23:33:40,451 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 23:33:40,457 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:40" (1/1) ... [2024-11-07 23:33:40,457 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:40" (1/1) ... [2024-11-07 23:33:40,460 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:40" (1/1) ... [2024-11-07 23:33:40,474 INFO L175 MemorySlicer]: Split 18 memory accesses to 4 slices as follows [2, 5, 6, 5]. 33 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 5, 1, 5]. The 2 writes are split as follows [0, 0, 2, 0]. [2024-11-07 23:33:40,475 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:40" (1/1) ... [2024-11-07 23:33:40,475 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:40" (1/1) ... [2024-11-07 23:33:40,484 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:40" (1/1) ... [2024-11-07 23:33:40,491 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:40" (1/1) ... [2024-11-07 23:33:40,492 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:40" (1/1) ... [2024-11-07 23:33:40,493 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:40" (1/1) ... [2024-11-07 23:33:40,495 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 23:33:40,496 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 23:33:40,496 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 23:33:40,496 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 23:33:40,497 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:40" (1/1) ... [2024-11-07 23:33:40,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 23:33:40,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:33:40,529 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 23:33:40,533 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 23:33:40,556 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-07 23:33:40,556 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-07 23:33:40,556 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-07 23:33:40,557 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-07 23:33:40,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-07 23:33:40,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-07 23:33:40,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-07 23:33:40,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-07 23:33:40,557 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-07 23:33:40,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 23:33:40,557 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-07 23:33:40,557 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-07 23:33:40,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 23:33:40,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-07 23:33:40,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-07 23:33:40,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-07 23:33:40,558 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-07 23:33:40,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 23:33:40,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 23:33:40,559 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 23:33:40,693 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 23:33:40,695 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 23:33:40,922 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 23:33:40,922 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 23:33:41,078 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 23:33:41,078 INFO L316 CfgBuilder]: Removed 9 assume(true) statements. [2024-11-07 23:33:41,078 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:33:41 BoogieIcfgContainer [2024-11-07 23:33:41,079 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 23:33:41,081 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 23:33:41,081 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 23:33:41,085 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 23:33:41,085 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 11:33:39" (1/3) ... [2024-11-07 23:33:41,086 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@152f5d95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:33:41, skipping insertion in model container [2024-11-07 23:33:41,086 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:33:40" (2/3) ... [2024-11-07 23:33:41,086 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@152f5d95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:33:41, skipping insertion in model container [2024-11-07 23:33:41,086 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:33:41" (3/3) ... [2024-11-07 23:33:41,087 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_21-deref_read_racing.i [2024-11-07 23:33:41,100 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 23:33:41,100 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-11-07 23:33:41,100 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 23:33:41,140 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-07 23:33:41,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 49 transitions, 102 flow [2024-11-07 23:33:41,202 INFO L124 PetriNetUnfolderBase]: 10/59 cut-off events. [2024-11-07 23:33:41,204 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 23:33:41,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 59 events. 10/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 155 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 46. Up to 4 conditions per place. [2024-11-07 23:33:41,207 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 49 transitions, 102 flow [2024-11-07 23:33:41,210 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 49 transitions, 102 flow [2024-11-07 23:33:41,216 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 23:33:41,228 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;@62c13b2f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 23:33:41,229 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-11-07 23:33:41,234 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 23:33:41,234 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2024-11-07 23:33:41,234 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 23:33:41,234 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:33:41,235 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-07 23:33:41,235 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2024-11-07 23:33:41,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:33:41,240 INFO L85 PathProgramCache]: Analyzing trace with hash 316449182, now seen corresponding path program 1 times [2024-11-07 23:33:41,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:33:41,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135811711] [2024-11-07 23:33:41,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:33:41,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:33:41,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:33:41,535 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 23:33:41,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:33:41,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135811711] [2024-11-07 23:33:41,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135811711] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:33:41,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:33:41,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 23:33:41,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98265866] [2024-11-07 23:33:41,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:33:41,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:33:41,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:33:41,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:33:41,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:33:41,582 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2024-11-07 23:33:41,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 49 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 23:33:41,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:33:41,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2024-11-07 23:33:41,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:33:41,787 INFO L124 PetriNetUnfolderBase]: 88/260 cut-off events. [2024-11-07 23:33:41,788 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 23:33:41,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 463 conditions, 260 events. 88/260 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1221 event pairs, 0 based on Foata normal form. 60/306 useless extension candidates. Maximal degree in co-relation 440. Up to 162 conditions per place. [2024-11-07 23:33:41,792 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 41 selfloop transitions, 3 changer transitions 0/62 dead transitions. [2024-11-07 23:33:41,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 62 transitions, 216 flow [2024-11-07 23:33:41,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:33:41,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:33:41,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 139 transitions. [2024-11-07 23:33:41,808 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7091836734693877 [2024-11-07 23:33:41,809 INFO L175 Difference]: Start difference. First operand has 44 places, 49 transitions, 102 flow. Second operand 4 states and 139 transitions. [2024-11-07 23:33:41,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 62 transitions, 216 flow [2024-11-07 23:33:41,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 62 transitions, 216 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 23:33:41,818 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 92 flow [2024-11-07 23:33:41,821 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=92, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2024-11-07 23:33:41,824 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 2 predicate places. [2024-11-07 23:33:41,824 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 92 flow [2024-11-07 23:33:41,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 23:33:41,825 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:33:41,825 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-07 23:33:41,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 23:33:41,825 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2024-11-07 23:33:41,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:33:41,826 INFO L85 PathProgramCache]: Analyzing trace with hash -115315048, now seen corresponding path program 1 times [2024-11-07 23:33:41,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:33:41,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851671666] [2024-11-07 23:33:41,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:33:41,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:33:41,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 23:33:41,848 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-07 23:33:41,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 23:33:41,888 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-07 23:33:41,889 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-07 23:33:41,890 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2024-11-07 23:33:41,891 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2024-11-07 23:33:41,895 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2024-11-07 23:33:41,895 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2024-11-07 23:33:41,895 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2024-11-07 23:33:41,895 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2024-11-07 23:33:41,895 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2024-11-07 23:33:41,896 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2024-11-07 23:33:41,896 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2024-11-07 23:33:41,896 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2024-11-07 23:33:41,896 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2024-11-07 23:33:41,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 23:33:41,896 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-07 23:33:41,899 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-07 23:33:41,902 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-07 23:33:41,930 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-07 23:33:41,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 81 transitions, 172 flow [2024-11-07 23:33:41,961 INFO L124 PetriNetUnfolderBase]: 18/106 cut-off events. [2024-11-07 23:33:41,965 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 23:33:41,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 106 events. 18/106 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 344 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 77. Up to 6 conditions per place. [2024-11-07 23:33:41,967 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 81 transitions, 172 flow [2024-11-07 23:33:41,968 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 81 transitions, 172 flow [2024-11-07 23:33:41,969 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 23:33:41,969 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;@62c13b2f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 23:33:41,969 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-11-07 23:33:41,977 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 23:33:41,978 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-11-07 23:33:41,978 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 23:33:41,978 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:33:41,978 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-07 23:33:41,979 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-07 23:33:41,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:33:41,980 INFO L85 PathProgramCache]: Analyzing trace with hash 393777678, now seen corresponding path program 1 times [2024-11-07 23:33:41,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:33:41,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021576511] [2024-11-07 23:33:41,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:33:41,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:33:42,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:33:42,066 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 23:33:42,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:33:42,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021576511] [2024-11-07 23:33:42,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021576511] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:33:42,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:33:42,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 23:33:42,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072659444] [2024-11-07 23:33:42,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:33:42,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:33:42,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:33:42,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:33:42,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:33:42,084 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 81 [2024-11-07 23:33:42,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 81 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 23:33:42,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:33:42,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 81 [2024-11-07 23:33:42,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:33:42,888 INFO L124 PetriNetUnfolderBase]: 2860/5993 cut-off events. [2024-11-07 23:33:42,889 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2024-11-07 23:33:42,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10589 conditions, 5993 events. 2860/5993 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 47342 event pairs, 1596 based on Foata normal form. 1239/6669 useless extension candidates. Maximal degree in co-relation 2143. Up to 4518 conditions per place. [2024-11-07 23:33:42,942 INFO L140 encePairwiseOnDemand]: 61/81 looper letters, 57 selfloop transitions, 3 changer transitions 0/92 dead transitions. [2024-11-07 23:33:42,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 92 transitions, 314 flow [2024-11-07 23:33:42,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:33:42,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:33:42,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 217 transitions. [2024-11-07 23:33:42,947 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6697530864197531 [2024-11-07 23:33:42,947 INFO L175 Difference]: Start difference. First operand has 72 places, 81 transitions, 172 flow. Second operand 4 states and 217 transitions. [2024-11-07 23:33:42,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 92 transitions, 314 flow [2024-11-07 23:33:42,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 92 transitions, 314 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 23:33:42,951 INFO L231 Difference]: Finished difference. Result has 77 places, 69 transitions, 168 flow [2024-11-07 23:33:42,952 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=168, PETRI_PLACES=77, PETRI_TRANSITIONS=69} [2024-11-07 23:33:42,953 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, 5 predicate places. [2024-11-07 23:33:42,953 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 69 transitions, 168 flow [2024-11-07 23:33:42,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 23:33:42,953 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:33:42,953 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:33:42,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 23:33:42,954 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-07 23:33:42,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:33:42,954 INFO L85 PathProgramCache]: Analyzing trace with hash -551578820, now seen corresponding path program 1 times [2024-11-07 23:33:42,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:33:42,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680162536] [2024-11-07 23:33:42,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:33:42,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:33:42,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:33:43,094 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 23:33:43,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:33:43,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680162536] [2024-11-07 23:33:43,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680162536] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:33:43,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:33:43,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 23:33:43,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439360561] [2024-11-07 23:33:43,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:33:43,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:33:43,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:33:43,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:33:43,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:33:43,103 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 81 [2024-11-07 23:33:43,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 69 transitions, 168 flow. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 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 23:33:43,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:33:43,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 81 [2024-11-07 23:33:43,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:33:43,733 INFO L124 PetriNetUnfolderBase]: 2393/5170 cut-off events. [2024-11-07 23:33:43,733 INFO L125 PetriNetUnfolderBase]: For 394/727 co-relation queries the response was YES. [2024-11-07 23:33:43,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9434 conditions, 5170 events. 2393/5170 cut-off events. For 394/727 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 40087 event pairs, 757 based on Foata normal form. 115/5011 useless extension candidates. Maximal degree in co-relation 9333. Up to 3353 conditions per place. [2024-11-07 23:33:43,765 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 74 selfloop transitions, 6 changer transitions 0/114 dead transitions. [2024-11-07 23:33:43,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 114 transitions, 446 flow [2024-11-07 23:33:43,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 23:33:43,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 23:33:43,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 246 transitions. [2024-11-07 23:33:43,767 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6074074074074074 [2024-11-07 23:33:43,768 INFO L175 Difference]: Start difference. First operand has 77 places, 69 transitions, 168 flow. Second operand 5 states and 246 transitions. [2024-11-07 23:33:43,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 114 transitions, 446 flow [2024-11-07 23:33:43,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 114 transitions, 442 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 23:33:43,772 INFO L231 Difference]: Finished difference. Result has 83 places, 74 transitions, 210 flow [2024-11-07 23:33:43,773 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=210, PETRI_PLACES=83, PETRI_TRANSITIONS=74} [2024-11-07 23:33:43,774 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, 11 predicate places. [2024-11-07 23:33:43,775 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 74 transitions, 210 flow [2024-11-07 23:33:43,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 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 23:33:43,776 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:33:43,776 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-07 23:33:43,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 23:33:43,776 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-07 23:33:43,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:33:43,776 INFO L85 PathProgramCache]: Analyzing trace with hash 634657270, now seen corresponding path program 1 times [2024-11-07 23:33:43,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:33:43,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720778276] [2024-11-07 23:33:43,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:33:43,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:33:43,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:33:43,867 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 23:33:43,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:33:43,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720778276] [2024-11-07 23:33:43,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720778276] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:33:43,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439916996] [2024-11-07 23:33:43,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:33:43,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:33:43,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:33:43,872 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 23:33:43,874 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 23:33:43,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:33:43,953 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-07 23:33:43,955 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:33:44,013 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 23:33:44,013 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 23:33:44,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439916996] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:33:44,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 23:33:44,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2024-11-07 23:33:44,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146319457] [2024-11-07 23:33:44,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:33:44,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 23:33:44,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:33:44,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 23:33:44,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-07 23:33:44,025 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 81 [2024-11-07 23:33:44,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 74 transitions, 210 flow. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 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 23:33:44,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:33:44,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 81 [2024-11-07 23:33:44,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:33:44,699 INFO L124 PetriNetUnfolderBase]: 3028/5702 cut-off events. [2024-11-07 23:33:44,699 INFO L125 PetriNetUnfolderBase]: For 1030/1030 co-relation queries the response was YES. [2024-11-07 23:33:44,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12034 conditions, 5702 events. 3028/5702 cut-off events. For 1030/1030 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 42531 event pairs, 671 based on Foata normal form. 152/5484 useless extension candidates. Maximal degree in co-relation 11152. Up to 2271 conditions per place. [2024-11-07 23:33:44,746 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 90 selfloop transitions, 6 changer transitions 0/127 dead transitions. [2024-11-07 23:33:44,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 127 transitions, 552 flow [2024-11-07 23:33:44,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:33:44,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:33:44,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 204 transitions. [2024-11-07 23:33:44,751 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6296296296296297 [2024-11-07 23:33:44,751 INFO L175 Difference]: Start difference. First operand has 83 places, 74 transitions, 210 flow. Second operand 4 states and 204 transitions. [2024-11-07 23:33:44,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 127 transitions, 552 flow [2024-11-07 23:33:44,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 127 transitions, 552 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 23:33:44,760 INFO L231 Difference]: Finished difference. Result has 85 places, 73 transitions, 218 flow [2024-11-07 23:33:44,761 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=218, PETRI_PLACES=85, PETRI_TRANSITIONS=73} [2024-11-07 23:33:44,762 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, 13 predicate places. [2024-11-07 23:33:44,763 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 73 transitions, 218 flow [2024-11-07 23:33:44,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 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 23:33:44,763 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:33:44,763 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-11-07 23:33:44,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-07 23:33:44,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:33:44,964 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-07 23:33:44,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:33:44,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1800460708, now seen corresponding path program 1 times [2024-11-07 23:33:44,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:33:44,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007963799] [2024-11-07 23:33:44,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:33:44,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:33:44,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:33:45,019 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 23:33:45,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:33:45,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007963799] [2024-11-07 23:33:45,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007963799] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:33:45,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:33:45,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 23:33:45,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553431201] [2024-11-07 23:33:45,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:33:45,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:33:45,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:33:45,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:33:45,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:33:45,031 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 81 [2024-11-07 23:33:45,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 73 transitions, 218 flow. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 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 23:33:45,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:33:45,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 81 [2024-11-07 23:33:45,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:33:45,621 INFO L124 PetriNetUnfolderBase]: 2459/4829 cut-off events. [2024-11-07 23:33:45,621 INFO L125 PetriNetUnfolderBase]: For 1738/1738 co-relation queries the response was YES. [2024-11-07 23:33:45,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10486 conditions, 4829 events. 2459/4829 cut-off events. For 1738/1738 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 35483 event pairs, 254 based on Foata normal form. 152/4881 useless extension candidates. Maximal degree in co-relation 9719. Up to 2725 conditions per place. [2024-11-07 23:33:45,647 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 89 selfloop transitions, 6 changer transitions 0/127 dead transitions. [2024-11-07 23:33:45,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 127 transitions, 560 flow [2024-11-07 23:33:45,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:33:45,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:33:45,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 207 transitions. [2024-11-07 23:33:45,649 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6388888888888888 [2024-11-07 23:33:45,649 INFO L175 Difference]: Start difference. First operand has 85 places, 73 transitions, 218 flow. Second operand 4 states and 207 transitions. [2024-11-07 23:33:45,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 127 transitions, 560 flow [2024-11-07 23:33:45,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 127 transitions, 548 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-07 23:33:45,659 INFO L231 Difference]: Finished difference. Result has 85 places, 73 transitions, 222 flow [2024-11-07 23:33:45,659 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=222, PETRI_PLACES=85, PETRI_TRANSITIONS=73} [2024-11-07 23:33:45,660 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, 13 predicate places. [2024-11-07 23:33:45,661 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 73 transitions, 222 flow [2024-11-07 23:33:45,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 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 23:33:45,661 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:33:45,661 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2024-11-07 23:33:45,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-07 23:33:45,661 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-07 23:33:45,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:33:45,662 INFO L85 PathProgramCache]: Analyzing trace with hash 629092752, now seen corresponding path program 1 times [2024-11-07 23:33:45,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:33:45,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051896664] [2024-11-07 23:33:45,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:33:45,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:33:45,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 23:33:45,678 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-07 23:33:45,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 23:33:45,693 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-07 23:33:45,693 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-07 23:33:45,694 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2024-11-07 23:33:45,694 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 15 remaining) [2024-11-07 23:33:45,694 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 15 remaining) [2024-11-07 23:33:45,694 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 15 remaining) [2024-11-07 23:33:45,694 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 15 remaining) [2024-11-07 23:33:45,694 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 15 remaining) [2024-11-07 23:33:45,694 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 15 remaining) [2024-11-07 23:33:45,694 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 15 remaining) [2024-11-07 23:33:45,694 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 15 remaining) [2024-11-07 23:33:45,694 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 15 remaining) [2024-11-07 23:33:45,694 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 15 remaining) [2024-11-07 23:33:45,694 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 15 remaining) [2024-11-07 23:33:45,694 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 15 remaining) [2024-11-07 23:33:45,694 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 15 remaining) [2024-11-07 23:33:45,694 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 15 remaining) [2024-11-07 23:33:45,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-07 23:33:45,695 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-07 23:33:45,699 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-07 23:33:45,699 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-07 23:33:45,725 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-07 23:33:45,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 113 transitions, 244 flow [2024-11-07 23:33:45,742 INFO L124 PetriNetUnfolderBase]: 26/153 cut-off events. [2024-11-07 23:33:45,743 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-07 23:33:45,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 153 events. 26/153 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 527 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 117. Up to 8 conditions per place. [2024-11-07 23:33:45,744 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 113 transitions, 244 flow [2024-11-07 23:33:45,745 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 113 transitions, 244 flow [2024-11-07 23:33:45,746 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 23:33:45,747 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;@62c13b2f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 23:33:45,747 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2024-11-07 23:33:45,749 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 23:33:45,750 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-11-07 23:33:45,750 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 23:33:45,750 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:33:45,750 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-07 23:33:45,750 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-07 23:33:45,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:33:45,751 INFO L85 PathProgramCache]: Analyzing trace with hash 501643934, now seen corresponding path program 1 times [2024-11-07 23:33:45,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:33:45,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401624067] [2024-11-07 23:33:45,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:33:45,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:33:45,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:33:45,795 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 23:33:45,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:33:45,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401624067] [2024-11-07 23:33:45,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401624067] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:33:45,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:33:45,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 23:33:45,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615587383] [2024-11-07 23:33:45,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:33:45,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:33:45,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:33:45,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:33:45,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:33:45,802 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 113 [2024-11-07 23:33:45,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 113 transitions, 244 flow. Second operand has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 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 23:33:45,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:33:45,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 113 [2024-11-07 23:33:45,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:33:51,968 INFO L124 PetriNetUnfolderBase]: 53548/96435 cut-off events. [2024-11-07 23:33:51,968 INFO L125 PetriNetUnfolderBase]: For 1002/1002 co-relation queries the response was YES. [2024-11-07 23:33:52,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171304 conditions, 96435 events. 53548/96435 cut-off events. For 1002/1002 co-relation queries the response was YES. Maximal size of possible extension queue 2346. Compared 968902 event pairs, 51804 based on Foata normal form. 21332/109397 useless extension candidates. Maximal degree in co-relation 87005. Up to 74214 conditions per place. [2024-11-07 23:33:52,509 INFO L140 encePairwiseOnDemand]: 87/113 looper letters, 69 selfloop transitions, 3 changer transitions 0/118 dead transitions. [2024-11-07 23:33:52,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 118 transitions, 398 flow [2024-11-07 23:33:52,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:33:52,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:33:52,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 291 transitions. [2024-11-07 23:33:52,511 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6438053097345132 [2024-11-07 23:33:52,511 INFO L175 Difference]: Start difference. First operand has 100 places, 113 transitions, 244 flow. Second operand 4 states and 291 transitions. [2024-11-07 23:33:52,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 118 transitions, 398 flow [2024-11-07 23:33:52,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 118 transitions, 396 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-07 23:33:52,514 INFO L231 Difference]: Finished difference. Result has 105 places, 95 transitions, 226 flow [2024-11-07 23:33:52,516 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=226, PETRI_PLACES=105, PETRI_TRANSITIONS=95} [2024-11-07 23:33:52,518 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 5 predicate places. [2024-11-07 23:33:52,519 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 95 transitions, 226 flow [2024-11-07 23:33:52,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 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 23:33:52,519 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:33:52,519 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-07 23:33:52,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-07 23:33:52,519 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-07 23:33:52,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:33:52,520 INFO L85 PathProgramCache]: Analyzing trace with hash -67177482, now seen corresponding path program 1 times [2024-11-07 23:33:52,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:33:52,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112174448] [2024-11-07 23:33:52,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:33:52,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:33:52,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:33:52,588 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 23:33:52,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:33:52,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112174448] [2024-11-07 23:33:52,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112174448] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:33:52,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192539304] [2024-11-07 23:33:52,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:33:52,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:33:52,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:33:52,592 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 23:33:52,594 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 23:33:52,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:33:52,669 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-07 23:33:52,670 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:33:52,706 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 23:33:52,706 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 23:33:52,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192539304] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:33:52,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 23:33:52,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2024-11-07 23:33:52,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48217434] [2024-11-07 23:33:52,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:33:52,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 23:33:52,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:33:52,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 23:33:52,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-07 23:33:52,712 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 113 [2024-11-07 23:33:52,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 95 transitions, 226 flow. Second operand has 5 states, 5 states have (on average 47.0) internal successors, (235), 5 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 23:33:52,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:33:52,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 113 [2024-11-07 23:33:52,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:33:57,836 INFO L124 PetriNetUnfolderBase]: 53559/84206 cut-off events. [2024-11-07 23:33:57,837 INFO L125 PetriNetUnfolderBase]: For 4324/4324 co-relation queries the response was YES. [2024-11-07 23:33:57,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166506 conditions, 84206 events. 53559/84206 cut-off events. For 4324/4324 co-relation queries the response was YES. Maximal size of possible extension queue 1995. Compared 735058 event pairs, 13354 based on Foata normal form. 1872/81329 useless extension candidates. Maximal degree in co-relation 137981. Up to 34556 conditions per place. [2024-11-07 23:33:58,327 INFO L140 encePairwiseOnDemand]: 108/113 looper letters, 109 selfloop transitions, 6 changer transitions 0/160 dead transitions. [2024-11-07 23:33:58,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 160 transitions, 584 flow [2024-11-07 23:33:58,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:33:58,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:33:58,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 294 transitions. [2024-11-07 23:33:58,329 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6504424778761062 [2024-11-07 23:33:58,329 INFO L175 Difference]: Start difference. First operand has 105 places, 95 transitions, 226 flow. Second operand 4 states and 294 transitions. [2024-11-07 23:33:58,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 160 transitions, 584 flow [2024-11-07 23:33:58,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 160 transitions, 582 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 23:33:58,345 INFO L231 Difference]: Finished difference. Result has 106 places, 94 transitions, 232 flow [2024-11-07 23:33:58,346 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=232, PETRI_PLACES=106, PETRI_TRANSITIONS=94} [2024-11-07 23:33:58,346 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 6 predicate places. [2024-11-07 23:33:58,346 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 94 transitions, 232 flow [2024-11-07 23:33:58,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.0) internal successors, (235), 5 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 23:33:58,347 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:33:58,347 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:33:58,518 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 23:33:58,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:33:58,548 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-07 23:33:58,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:33:58,548 INFO L85 PathProgramCache]: Analyzing trace with hash -228615717, now seen corresponding path program 1 times [2024-11-07 23:33:58,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:33:58,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754620009] [2024-11-07 23:33:58,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:33:58,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:33:58,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:33:58,618 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 23:33:58,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:33:58,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754620009] [2024-11-07 23:33:58,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754620009] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:33:58,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:33:58,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 23:33:58,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480411742] [2024-11-07 23:33:58,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:33:58,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:33:58,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:33:58,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:33:58,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:33:58,624 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 113 [2024-11-07 23:33:58,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 94 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 48.75) internal successors, (195), 4 states have internal predecessors, (195), 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 23:33:58,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:33:58,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 113 [2024-11-07 23:33:58,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:34:03,302 INFO L124 PetriNetUnfolderBase]: 47105/82279 cut-off events. [2024-11-07 23:34:03,302 INFO L125 PetriNetUnfolderBase]: For 16535/18794 co-relation queries the response was YES. [2024-11-07 23:34:03,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157481 conditions, 82279 events. 47105/82279 cut-off events. For 16535/18794 co-relation queries the response was YES. Maximal size of possible extension queue 2159. Compared 787290 event pairs, 18833 based on Foata normal form. 1267/79515 useless extension candidates. Maximal degree in co-relation 134808. Up to 60521 conditions per place. [2024-11-07 23:34:03,766 INFO L140 encePairwiseOnDemand]: 106/113 looper letters, 110 selfloop transitions, 8 changer transitions 0/165 dead transitions. [2024-11-07 23:34:03,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 165 transitions, 667 flow [2024-11-07 23:34:03,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 23:34:03,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 23:34:03,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 354 transitions. [2024-11-07 23:34:03,768 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6265486725663717 [2024-11-07 23:34:03,768 INFO L175 Difference]: Start difference. First operand has 106 places, 94 transitions, 232 flow. Second operand 5 states and 354 transitions. [2024-11-07 23:34:03,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 165 transitions, 667 flow [2024-11-07 23:34:03,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 165 transitions, 639 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-07 23:34:03,781 INFO L231 Difference]: Finished difference. Result has 110 places, 101 transitions, 281 flow [2024-11-07 23:34:03,781 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=281, PETRI_PLACES=110, PETRI_TRANSITIONS=101} [2024-11-07 23:34:03,782 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 10 predicate places. [2024-11-07 23:34:03,782 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 101 transitions, 281 flow [2024-11-07 23:34:03,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.75) internal successors, (195), 4 states have internal predecessors, (195), 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 23:34:03,784 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:34:03,784 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-11-07 23:34:03,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-07 23:34:03,785 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-07 23:34:03,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:34:03,785 INFO L85 PathProgramCache]: Analyzing trace with hash -2082501427, now seen corresponding path program 1 times [2024-11-07 23:34:03,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:34:03,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167682197] [2024-11-07 23:34:03,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:34:03,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:34:03,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:34:03,843 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 23:34:03,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:34:03,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167682197] [2024-11-07 23:34:03,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167682197] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:34:03,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:34:03,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 23:34:03,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295176664] [2024-11-07 23:34:03,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:34:03,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:34:03,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:34:03,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:34:03,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:34:03,854 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 113 [2024-11-07 23:34:03,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 101 transitions, 281 flow. Second operand has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 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 23:34:03,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:34:03,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 113 [2024-11-07 23:34:03,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:34:08,820 INFO L124 PetriNetUnfolderBase]: 48909/79486 cut-off events. [2024-11-07 23:34:08,820 INFO L125 PetriNetUnfolderBase]: For 18311/18311 co-relation queries the response was YES. [2024-11-07 23:34:09,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166850 conditions, 79486 events. 48909/79486 cut-off events. For 18311/18311 co-relation queries the response was YES. Maximal size of possible extension queue 2031. Compared 721460 event pairs, 8573 based on Foata normal form. 0/78190 useless extension candidates. Maximal degree in co-relation 145199. Up to 46837 conditions per place. [2024-11-07 23:34:09,484 INFO L140 encePairwiseOnDemand]: 108/113 looper letters, 129 selfloop transitions, 6 changer transitions 0/181 dead transitions. [2024-11-07 23:34:09,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 181 transitions, 781 flow [2024-11-07 23:34:09,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:34:09,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:34:09,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 297 transitions. [2024-11-07 23:34:09,485 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6570796460176991 [2024-11-07 23:34:09,486 INFO L175 Difference]: Start difference. First operand has 110 places, 101 transitions, 281 flow. Second operand 4 states and 297 transitions. [2024-11-07 23:34:09,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 181 transitions, 781 flow [2024-11-07 23:34:09,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 181 transitions, 781 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 23:34:09,498 INFO L231 Difference]: Finished difference. Result has 113 places, 101 transitions, 297 flow [2024-11-07 23:34:09,498 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=297, PETRI_PLACES=113, PETRI_TRANSITIONS=101} [2024-11-07 23:34:09,499 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 13 predicate places. [2024-11-07 23:34:09,499 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 101 transitions, 297 flow [2024-11-07 23:34:09,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 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 23:34:09,500 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:34:09,500 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:34:09,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-07 23:34:09,500 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-07 23:34:09,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:34:09,501 INFO L85 PathProgramCache]: Analyzing trace with hash -155216251, now seen corresponding path program 1 times [2024-11-07 23:34:09,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:34:09,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098024668] [2024-11-07 23:34:09,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:34:09,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:34:09,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:34:09,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 23:34:09,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:34:09,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098024668] [2024-11-07 23:34:09,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098024668] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:34:09,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:34:09,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 23:34:09,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011955301] [2024-11-07 23:34:09,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:34:09,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:34:09,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:34:09,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:34:09,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:34:09,576 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 113 [2024-11-07 23:34:09,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 101 transitions, 297 flow. Second operand has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 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 23:34:09,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:34:09,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 113 [2024-11-07 23:34:09,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:34:15,375 INFO L124 PetriNetUnfolderBase]: 52665/92845 cut-off events. [2024-11-07 23:34:15,375 INFO L125 PetriNetUnfolderBase]: For 37570/37596 co-relation queries the response was YES. [2024-11-07 23:34:15,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195204 conditions, 92845 events. 52665/92845 cut-off events. For 37570/37596 co-relation queries the response was YES. Maximal size of possible extension queue 2487. Compared 913359 event pairs, 21673 based on Foata normal form. 2634/92127 useless extension candidates. Maximal degree in co-relation 170024. Up to 68097 conditions per place. [2024-11-07 23:34:15,966 INFO L140 encePairwiseOnDemand]: 106/113 looper letters, 111 selfloop transitions, 11 changer transitions 0/168 dead transitions. [2024-11-07 23:34:15,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 168 transitions, 759 flow [2024-11-07 23:34:15,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 23:34:15,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 23:34:15,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 353 transitions. [2024-11-07 23:34:15,968 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6247787610619469 [2024-11-07 23:34:15,968 INFO L175 Difference]: Start difference. First operand has 113 places, 101 transitions, 297 flow. Second operand 5 states and 353 transitions. [2024-11-07 23:34:15,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 168 transitions, 759 flow [2024-11-07 23:34:16,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 168 transitions, 744 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 23:34:16,003 INFO L231 Difference]: Finished difference. Result has 118 places, 106 transitions, 362 flow [2024-11-07 23:34:16,003 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=362, PETRI_PLACES=118, PETRI_TRANSITIONS=106} [2024-11-07 23:34:16,004 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 18 predicate places. [2024-11-07 23:34:16,004 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 106 transitions, 362 flow [2024-11-07 23:34:16,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 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 23:34:16,004 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:34:16,004 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:34:16,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-07 23:34:16,004 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-07 23:34:16,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:34:16,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1025755457, now seen corresponding path program 1 times [2024-11-07 23:34:16,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:34:16,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380816534] [2024-11-07 23:34:16,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:34:16,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:34:16,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:34:16,167 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 23:34:16,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:34:16,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380816534] [2024-11-07 23:34:16,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380816534] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:34:16,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:34:16,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 23:34:16,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872017578] [2024-11-07 23:34:16,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:34:16,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 23:34:16,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:34:16,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 23:34:16,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-07 23:34:16,186 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 113 [2024-11-07 23:34:16,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 106 transitions, 362 flow. Second operand has 6 states, 6 states have (on average 46.833333333333336) internal successors, (281), 6 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 23:34:16,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:34:16,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 113 [2024-11-07 23:34:16,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand