./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4f9af400 extending candidate: java ['java'] extending candidate: /usr/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/oracle-jdk-bin-*/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/openjdk-*/bin/java ['java', '/usr/bin/java'] extending candidate: /usr/lib/jvm/java-*-openjdk-amd64/bin/java ['java', '/usr/bin/java', '/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java', '/usr/lib/jvm/java-17-openjdk-amd64/bin/java', '/usr/lib/jvm/java-11-openjdk-amd64/bin/java', '/usr/lib/jvm/java-1.17.0-openjdk-amd64/bin/java'] ['/root/.sdkman/candidates/java/21.0.5-tem/bin/java', '-Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config', '-Xmx15G', '-Xms4m', '-jar', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar', '-data', '@noDefault', '-ultimatedata', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data', '-tc', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml', '-i', '../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt.wvr.c', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf', '--cacsl2boogietranslator.entry.function', 'main', '--witnessprinter.witness.directory', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux', '--witnessprinter.witness.filename', 'witness', '--witnessprinter.write.witness.besides.input.file', 'false', '--witnessprinter.graph.data.specification', 'CHECK( init(main()), LTL(G ! overflow) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '32bit', '--witnessprinter.graph.data.programhash', '2e9e4bd6e9b16aa5f22ad2335ca34ba741869a12ab5a04a80108cf42ed170c0f'] Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2e9e4bd6e9b16aa5f22ad2335ca34ba741869a12ab5a04a80108cf42ed170c0f --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 23:39:09,000 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 23:39:09,056 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-07 23:39:09,061 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 23:39:09,064 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 23:39:09,077 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 23:39:09,078 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 23:39:09,078 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 23:39:09,078 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 23:39:09,079 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 23:39:09,079 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 23:39:09,079 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 23:39:09,079 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 23:39:09,079 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 23:39:09,079 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 23:39:09,079 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 23:39:09,079 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 23:39:09,079 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 23:39:09,080 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 23:39:09,080 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 23:39:09,080 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 23:39:09,080 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 23:39:09,080 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 23:39:09,080 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 23:39:09,080 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 23:39:09,080 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-07 23:39:09,080 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-07 23:39:09,080 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 23:39:09,080 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 23:39:09,080 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 23:39:09,081 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 23:39:09,081 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 23:39:09,081 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 23:39:09,081 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 23:39:09,081 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 23:39:09,081 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 23:39:09,081 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 23:39:09,081 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 23:39:09,081 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 23:39:09,081 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 23:39:09,081 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 23:39:09,082 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 23:39:09,082 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 23:39:09,082 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 23:39:09,082 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 -> 2e9e4bd6e9b16aa5f22ad2335ca34ba741869a12ab5a04a80108cf42ed170c0f [2024-11-07 23:39:09,328 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 23:39:09,336 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 23:39:09,338 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 23:39:09,339 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 23:39:09,340 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 23:39:09,341 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt.wvr.c [2024-11-07 23:39:10,524 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 23:39:10,748 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 23:39:10,748 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt.wvr.c [2024-11-07 23:39:10,760 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0fb3fc90c/6ac79d25408a4f3cad71c15869c72289/FLAG344b0a99b [2024-11-07 23:39:11,097 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0fb3fc90c/6ac79d25408a4f3cad71c15869c72289 [2024-11-07 23:39:11,099 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 23:39:11,101 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 23:39:11,102 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 23:39:11,102 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 23:39:11,105 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 23:39:11,106 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:39:11" (1/1) ... [2024-11-07 23:39:11,106 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e35c07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:39:11, skipping insertion in model container [2024-11-07 23:39:11,106 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:39:11" (1/1) ... [2024-11-07 23:39:11,119 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 23:39:11,274 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 23:39:11,284 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 23:39:11,320 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 23:39:11,334 INFO L204 MainTranslator]: Completed translation [2024-11-07 23:39:11,335 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:39:11 WrapperNode [2024-11-07 23:39:11,335 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 23:39:11,337 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 23:39:11,337 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 23:39:11,337 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 23:39:11,342 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:39:11" (1/1) ... [2024-11-07 23:39:11,351 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:39:11" (1/1) ... [2024-11-07 23:39:11,382 INFO L138 Inliner]: procedures = 25, calls = 60, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 359 [2024-11-07 23:39:11,382 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 23:39:11,383 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 23:39:11,383 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 23:39:11,383 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 23:39:11,393 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:39:11" (1/1) ... [2024-11-07 23:39:11,393 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:39:11" (1/1) ... [2024-11-07 23:39:11,400 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:39:11" (1/1) ... [2024-11-07 23:39:11,418 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-07 23:39:11,418 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:39:11" (1/1) ... [2024-11-07 23:39:11,418 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:39:11" (1/1) ... [2024-11-07 23:39:11,429 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:39:11" (1/1) ... [2024-11-07 23:39:11,433 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:39:11" (1/1) ... [2024-11-07 23:39:11,434 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:39:11" (1/1) ... [2024-11-07 23:39:11,435 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:39:11" (1/1) ... [2024-11-07 23:39:11,437 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 23:39:11,438 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 23:39:11,438 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 23:39:11,438 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 23:39:11,439 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:39:11" (1/1) ... [2024-11-07 23:39:11,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 23:39:11,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:39:11,473 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 23:39:11,476 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 23:39:11,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 23:39:11,497 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-07 23:39:11,498 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-07 23:39:11,498 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-07 23:39:11,498 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-07 23:39:11,498 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-07 23:39:11,498 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-07 23:39:11,499 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-07 23:39:11,499 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-07 23:39:11,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 23:39:11,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-07 23:39:11,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-07 23:39:11,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-07 23:39:11,500 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-07 23:39:11,500 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-07 23:39:11,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-07 23:39:11,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 23:39:11,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 23:39:11,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-07 23:39:11,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-07 23:39:11,502 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 23:39:11,597 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 23:39:11,599 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 23:39:12,073 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 23:39:12,073 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 23:39:12,495 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 23:39:12,496 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-07 23:39:12,496 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:39:12 BoogieIcfgContainer [2024-11-07 23:39:12,496 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 23:39:12,498 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 23:39:12,498 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 23:39:12,501 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 23:39:12,502 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 11:39:11" (1/3) ... [2024-11-07 23:39:12,502 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@545daee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:39:12, skipping insertion in model container [2024-11-07 23:39:12,502 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:39:11" (2/3) ... [2024-11-07 23:39:12,502 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@545daee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:39:12, skipping insertion in model container [2024-11-07 23:39:12,502 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:39:12" (3/3) ... [2024-11-07 23:39:12,503 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-buffer-mult-alt.wvr.c [2024-11-07 23:39:12,514 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 23:39:12,515 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2024-11-07 23:39:12,515 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 23:39:12,630 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-07 23:39:12,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 82 transitions, 192 flow [2024-11-07 23:39:12,707 INFO L124 PetriNetUnfolderBase]: 6/78 cut-off events. [2024-11-07 23:39:12,711 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-07 23:39:12,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 78 events. 6/78 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 265 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2024-11-07 23:39:12,715 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 82 transitions, 192 flow [2024-11-07 23:39:12,718 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 76 transitions, 173 flow [2024-11-07 23:39:12,728 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 23:39:12,739 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;@4a029ff5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 23:39:12,740 INFO L334 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2024-11-07 23:39:12,743 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 23:39:12,743 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-07 23:39:12,744 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 23:39:12,744 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:39:12,744 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-07 23:39:12,744 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-07 23:39:12,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:39:12,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1093182, now seen corresponding path program 1 times [2024-11-07 23:39:12,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:39:12,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679668011] [2024-11-07 23:39:12,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:39:12,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:39:12,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:39:12,976 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 23:39:12,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:39:12,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679668011] [2024-11-07 23:39:12,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679668011] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:39:12,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:39:12,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 23:39:12,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985546509] [2024-11-07 23:39:12,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:39:12,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:39:12,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:39:13,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:39:13,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:39:13,025 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 82 [2024-11-07 23:39:13,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 76 transitions, 173 flow. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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 23:39:13,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:39:13,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 82 [2024-11-07 23:39:13,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:39:17,664 INFO L124 PetriNetUnfolderBase]: 38398/51528 cut-off events. [2024-11-07 23:39:17,666 INFO L125 PetriNetUnfolderBase]: For 1242/1242 co-relation queries the response was YES. [2024-11-07 23:39:17,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101238 conditions, 51528 events. 38398/51528 cut-off events. For 1242/1242 co-relation queries the response was YES. Maximal size of possible extension queue 5348. Compared 373715 event pairs, 28674 based on Foata normal form. 2/24393 useless extension candidates. Maximal degree in co-relation 95328. Up to 47902 conditions per place. [2024-11-07 23:39:18,113 INFO L140 encePairwiseOnDemand]: 63/82 looper letters, 49 selfloop transitions, 7 changer transitions 0/74 dead transitions. [2024-11-07 23:39:18,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 74 transitions, 281 flow [2024-11-07 23:39:18,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:39:18,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:39:18,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 156 transitions. [2024-11-07 23:39:18,125 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47560975609756095 [2024-11-07 23:39:18,126 INFO L175 Difference]: Start difference. First operand has 83 places, 76 transitions, 173 flow. Second operand 4 states and 156 transitions. [2024-11-07 23:39:18,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 74 transitions, 281 flow [2024-11-07 23:39:18,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 74 transitions, 268 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-07 23:39:18,211 INFO L231 Difference]: Finished difference. Result has 74 places, 74 transitions, 204 flow [2024-11-07 23:39:18,214 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=204, PETRI_PLACES=74, PETRI_TRANSITIONS=74} [2024-11-07 23:39:18,216 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, -9 predicate places. [2024-11-07 23:39:18,217 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 74 transitions, 204 flow [2024-11-07 23:39:18,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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 23:39:18,218 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:39:18,218 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-07 23:39:18,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 23:39:18,219 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-07 23:39:18,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:39:18,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1791640043, now seen corresponding path program 1 times [2024-11-07 23:39:18,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:39:18,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78493902] [2024-11-07 23:39:18,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:39:18,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:39:18,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:39:18,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:39:18,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:39:18,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78493902] [2024-11-07 23:39:18,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78493902] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:39:18,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78493073] [2024-11-07 23:39:18,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:39:18,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:39:18,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:39:18,324 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 23:39:18,325 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 23:39:18,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:39:18,421 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-07 23:39:18,424 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:39:18,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:39:18,460 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 23:39:18,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78493073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:39:18,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 23:39:18,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-07 23:39:18,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8735169] [2024-11-07 23:39:18,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:39:18,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 23:39:18,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:39:18,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 23:39:18,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-07 23:39:18,473 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 82 [2024-11-07 23:39:18,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 74 transitions, 204 flow. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 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 23:39:18,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:39:18,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 82 [2024-11-07 23:39:18,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:39:22,343 INFO L124 PetriNetUnfolderBase]: 38398/51526 cut-off events. [2024-11-07 23:39:22,343 INFO L125 PetriNetUnfolderBase]: For 201/201 co-relation queries the response was YES. [2024-11-07 23:39:22,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100536 conditions, 51526 events. 38398/51526 cut-off events. For 201/201 co-relation queries the response was YES. Maximal size of possible extension queue 5348. Compared 373739 event pairs, 28674 based on Foata normal form. 2/24394 useless extension candidates. Maximal degree in co-relation 100486. Up to 47892 conditions per place. [2024-11-07 23:39:22,673 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 42 selfloop transitions, 12 changer transitions 0/72 dead transitions. [2024-11-07 23:39:22,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 72 transitions, 304 flow [2024-11-07 23:39:22,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 23:39:22,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 23:39:22,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2024-11-07 23:39:22,675 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3821138211382114 [2024-11-07 23:39:22,675 INFO L175 Difference]: Start difference. First operand has 74 places, 74 transitions, 204 flow. Second operand 6 states and 188 transitions. [2024-11-07 23:39:22,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 72 transitions, 304 flow [2024-11-07 23:39:22,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 72 transitions, 304 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 23:39:22,678 INFO L231 Difference]: Finished difference. Result has 77 places, 72 transitions, 220 flow [2024-11-07 23:39:22,678 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=220, PETRI_PLACES=77, PETRI_TRANSITIONS=72} [2024-11-07 23:39:22,679 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, -6 predicate places. [2024-11-07 23:39:22,679 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 72 transitions, 220 flow [2024-11-07 23:39:22,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 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 23:39:22,680 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:39:22,680 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-07 23:39:22,694 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-07 23:39:22,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:39:22,881 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-07 23:39:22,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:39:22,881 INFO L85 PathProgramCache]: Analyzing trace with hash 293734636, now seen corresponding path program 1 times [2024-11-07 23:39:22,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:39:22,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790941048] [2024-11-07 23:39:22,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:39:22,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:39:22,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:39:22,968 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:39:22,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:39:22,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790941048] [2024-11-07 23:39:22,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790941048] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:39:22,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814626353] [2024-11-07 23:39:22,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:39:22,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:39:22,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:39:22,971 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 23:39:22,972 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 23:39:23,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:39:23,067 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-07 23:39:23,068 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:39:23,091 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:39:23,091 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:39:23,127 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:39:23,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814626353] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:39:23,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:39:23,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-07 23:39:23,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454041370] [2024-11-07 23:39:23,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:39:23,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-07 23:39:23,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:39:23,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-07 23:39:23,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-07 23:39:23,150 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 82 [2024-11-07 23:39:23,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 72 transitions, 220 flow. Second operand has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 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 23:39:23,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:39:23,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 82 [2024-11-07 23:39:23,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:39:27,741 INFO L124 PetriNetUnfolderBase]: 38404/51550 cut-off events. [2024-11-07 23:39:27,741 INFO L125 PetriNetUnfolderBase]: For 243/243 co-relation queries the response was YES. [2024-11-07 23:39:27,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100630 conditions, 51550 events. 38404/51550 cut-off events. For 243/243 co-relation queries the response was YES. Maximal size of possible extension queue 5348. Compared 374339 event pairs, 28674 based on Foata normal form. 6/24421 useless extension candidates. Maximal degree in co-relation 100488. Up to 47903 conditions per place. [2024-11-07 23:39:28,056 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 47 selfloop transitions, 25 changer transitions 0/90 dead transitions. [2024-11-07 23:39:28,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 90 transitions, 478 flow [2024-11-07 23:39:28,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 23:39:28,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-07 23:39:28,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 298 transitions. [2024-11-07 23:39:28,061 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36341463414634145 [2024-11-07 23:39:28,061 INFO L175 Difference]: Start difference. First operand has 77 places, 72 transitions, 220 flow. Second operand 10 states and 298 transitions. [2024-11-07 23:39:28,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 90 transitions, 478 flow [2024-11-07 23:39:28,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 90 transitions, 420 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-07 23:39:28,064 INFO L231 Difference]: Finished difference. Result has 84 places, 90 transitions, 360 flow [2024-11-07 23:39:28,065 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=360, PETRI_PLACES=84, PETRI_TRANSITIONS=90} [2024-11-07 23:39:28,066 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, 1 predicate places. [2024-11-07 23:39:28,066 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 90 transitions, 360 flow [2024-11-07 23:39:28,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 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 23:39:28,067 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:39:28,067 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:39:28,079 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 23:39:28,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:39:28,267 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-07 23:39:28,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:39:28,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1626261757, now seen corresponding path program 1 times [2024-11-07 23:39:28,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:39:28,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201527942] [2024-11-07 23:39:28,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:39:28,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:39:28,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:39:28,465 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 23:39:28,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:39:28,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201527942] [2024-11-07 23:39:28,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201527942] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:39:28,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:39:28,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 23:39:28,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497888061] [2024-11-07 23:39:28,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:39:28,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:39:28,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:39:28,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:39:28,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:39:28,467 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 82 [2024-11-07 23:39:28,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 90 transitions, 360 flow. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 23:39:28,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:39:28,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 82 [2024-11-07 23:39:28,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:39:32,799 INFO L124 PetriNetUnfolderBase]: 40732/54120 cut-off events. [2024-11-07 23:39:32,799 INFO L125 PetriNetUnfolderBase]: For 160/160 co-relation queries the response was YES. [2024-11-07 23:39:32,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106510 conditions, 54120 events. 40732/54120 cut-off events. For 160/160 co-relation queries the response was YES. Maximal size of possible extension queue 5324. Compared 387345 event pairs, 30522 based on Foata normal form. 710/26044 useless extension candidates. Maximal degree in co-relation 106414. Up to 47918 conditions per place. [2024-11-07 23:39:33,223 INFO L140 encePairwiseOnDemand]: 69/82 looper letters, 108 selfloop transitions, 5 changer transitions 0/133 dead transitions. [2024-11-07 23:39:33,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 133 transitions, 753 flow [2024-11-07 23:39:33,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 23:39:33,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 23:39:33,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 221 transitions. [2024-11-07 23:39:33,224 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5390243902439025 [2024-11-07 23:39:33,224 INFO L175 Difference]: Start difference. First operand has 84 places, 90 transitions, 360 flow. Second operand 5 states and 221 transitions. [2024-11-07 23:39:33,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 133 transitions, 753 flow [2024-11-07 23:39:33,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 133 transitions, 719 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-07 23:39:33,228 INFO L231 Difference]: Finished difference. Result has 88 places, 92 transitions, 383 flow [2024-11-07 23:39:33,228 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=383, PETRI_PLACES=88, PETRI_TRANSITIONS=92} [2024-11-07 23:39:33,229 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, 5 predicate places. [2024-11-07 23:39:33,229 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 92 transitions, 383 flow [2024-11-07 23:39:33,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 23:39:33,229 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:39:33,230 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:39:33,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 23:39:33,230 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-07 23:39:33,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:39:33,230 INFO L85 PathProgramCache]: Analyzing trace with hash 92185320, now seen corresponding path program 1 times [2024-11-07 23:39:33,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:39:33,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612828585] [2024-11-07 23:39:33,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:39:33,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:39:33,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:39:33,295 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 23:39:33,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:39:33,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612828585] [2024-11-07 23:39:33,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612828585] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:39:33,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:39:33,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 23:39:33,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204397879] [2024-11-07 23:39:33,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:39:33,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 23:39:33,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:39:33,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 23:39:33,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 23:39:33,298 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 82 [2024-11-07 23:39:33,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 92 transitions, 383 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 23:39:33,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:39:33,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 82 [2024-11-07 23:39:33,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:39:36,755 INFO L124 PetriNetUnfolderBase]: 35422/49310 cut-off events. [2024-11-07 23:39:36,756 INFO L125 PetriNetUnfolderBase]: For 3716/3716 co-relation queries the response was YES. [2024-11-07 23:39:36,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106420 conditions, 49310 events. 35422/49310 cut-off events. For 3716/3716 co-relation queries the response was YES. Maximal size of possible extension queue 4793. Compared 378406 event pairs, 27018 based on Foata normal form. 0/25022 useless extension candidates. Maximal degree in co-relation 106325. Up to 44785 conditions per place. [2024-11-07 23:39:37,151 INFO L140 encePairwiseOnDemand]: 80/82 looper letters, 70 selfloop transitions, 1 changer transitions 0/91 dead transitions. [2024-11-07 23:39:37,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 91 transitions, 523 flow [2024-11-07 23:39:37,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 23:39:37,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 23:39:37,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2024-11-07 23:39:37,152 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5040650406504065 [2024-11-07 23:39:37,152 INFO L175 Difference]: Start difference. First operand has 88 places, 92 transitions, 383 flow. Second operand 3 states and 124 transitions. [2024-11-07 23:39:37,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 91 transitions, 523 flow [2024-11-07 23:39:37,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 91 transitions, 519 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-07 23:39:37,168 INFO L231 Difference]: Finished difference. Result has 88 places, 91 transitions, 379 flow [2024-11-07 23:39:37,168 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=379, PETRI_PLACES=88, PETRI_TRANSITIONS=91} [2024-11-07 23:39:37,168 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, 5 predicate places. [2024-11-07 23:39:37,168 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 91 transitions, 379 flow [2024-11-07 23:39:37,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 23:39:37,168 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:39:37,168 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:39:37,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-07 23:39:37,169 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-07 23:39:37,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:39:37,169 INFO L85 PathProgramCache]: Analyzing trace with hash 92185321, now seen corresponding path program 1 times [2024-11-07 23:39:37,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:39:37,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063636817] [2024-11-07 23:39:37,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:39:37,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:39:37,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:39:37,201 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 23:39:37,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:39:37,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063636817] [2024-11-07 23:39:37,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063636817] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:39:37,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:39:37,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 23:39:37,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509777666] [2024-11-07 23:39:37,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:39:37,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 23:39:37,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:39:37,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 23:39:37,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 23:39:37,203 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 82 [2024-11-07 23:39:37,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 91 transitions, 379 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 23:39:37,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:39:37,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 82 [2024-11-07 23:39:37,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:39:40,130 INFO L124 PetriNetUnfolderBase]: 30271/42563 cut-off events. [2024-11-07 23:39:40,131 INFO L125 PetriNetUnfolderBase]: For 3298/3298 co-relation queries the response was YES. [2024-11-07 23:39:40,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91866 conditions, 42563 events. 30271/42563 cut-off events. For 3298/3298 co-relation queries the response was YES. Maximal size of possible extension queue 4115. Compared 327606 event pairs, 23514 based on Foata normal form. 0/22703 useless extension candidates. Maximal degree in co-relation 91850. Up to 38460 conditions per place. [2024-11-07 23:39:40,434 INFO L140 encePairwiseOnDemand]: 80/82 looper letters, 64 selfloop transitions, 6 changer transitions 0/90 dead transitions. [2024-11-07 23:39:40,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 90 transitions, 517 flow [2024-11-07 23:39:40,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 23:39:40,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 23:39:40,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2024-11-07 23:39:40,436 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-07 23:39:40,436 INFO L175 Difference]: Start difference. First operand has 88 places, 91 transitions, 379 flow. Second operand 3 states and 123 transitions. [2024-11-07 23:39:40,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 90 transitions, 517 flow [2024-11-07 23:39:40,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 90 transitions, 506 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 23:39:40,447 INFO L231 Difference]: Finished difference. Result has 87 places, 90 transitions, 378 flow [2024-11-07 23:39:40,448 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=378, PETRI_PLACES=87, PETRI_TRANSITIONS=90} [2024-11-07 23:39:40,448 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, 4 predicate places. [2024-11-07 23:39:40,448 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 90 transitions, 378 flow [2024-11-07 23:39:40,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 23:39:40,448 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:39:40,448 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:39:40,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-07 23:39:40,448 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-07 23:39:40,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:39:40,449 INFO L85 PathProgramCache]: Analyzing trace with hash 92185323, now seen corresponding path program 1 times [2024-11-07 23:39:40,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:39:40,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58409870] [2024-11-07 23:39:40,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:39:40,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:39:40,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:39:40,574 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 23:39:40,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:39:40,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58409870] [2024-11-07 23:39:40,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58409870] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:39:40,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:39:40,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 23:39:40,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942164176] [2024-11-07 23:39:40,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:39:40,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:39:40,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:39:40,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:39:40,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:39:40,576 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 82 [2024-11-07 23:39:40,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 90 transitions, 378 flow. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 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 23:39:40,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:39:40,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 82 [2024-11-07 23:39:40,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand