./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread/triangular-longer-2.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/pthread/triangular-longer-2.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', '647bb9f2bc4e44b8324ce986a0773d034e56e6ec110a9fd5233f5c8c0dbbeb10'] 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/pthread/triangular-longer-2.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 647bb9f2bc4e44b8324ce986a0773d034e56e6ec110a9fd5233f5c8c0dbbeb10 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 23:22:52,129 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 23:22:52,225 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-07 23:22:52,232 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 23:22:52,233 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 23:22:52,260 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 23:22:52,262 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 23:22:52,262 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 23:22:52,262 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 23:22:52,263 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 23:22:52,263 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 23:22:52,264 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 23:22:52,264 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 23:22:52,264 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 23:22:52,264 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 23:22:52,265 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 23:22:52,265 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 23:22:52,265 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 23:22:52,266 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 23:22:52,266 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 23:22:52,266 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 23:22:52,266 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 23:22:52,266 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 23:22:52,266 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 23:22:52,266 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 23:22:52,266 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-07 23:22:52,266 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-07 23:22:52,267 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 23:22:52,267 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 23:22:52,267 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 23:22:52,267 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 23:22:52,267 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 23:22:52,267 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 23:22:52,267 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 23:22:52,268 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 23:22:52,268 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 23:22:52,268 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 23:22:52,268 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 23:22:52,268 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 23:22:52,269 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 23:22:52,269 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 23:22:52,269 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 23:22:52,269 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 23:22:52,269 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 23:22:52,269 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 -> 647bb9f2bc4e44b8324ce986a0773d034e56e6ec110a9fd5233f5c8c0dbbeb10 [2024-11-07 23:22:52,531 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 23:22:52,538 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 23:22:52,543 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 23:22:52,544 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 23:22:52,545 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 23:22:52,546 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/triangular-longer-2.i [2024-11-07 23:22:53,785 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 23:22:54,016 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 23:22:54,019 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longer-2.i [2024-11-07 23:22:54,032 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8a21f6d71/d6054c3027684803b5ccffadbaeac819/FLAG97608295e [2024-11-07 23:22:54,043 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8a21f6d71/d6054c3027684803b5ccffadbaeac819 [2024-11-07 23:22:54,046 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 23:22:54,047 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 23:22:54,048 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 23:22:54,048 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 23:22:54,051 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 23:22:54,052 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:22:54" (1/1) ... [2024-11-07 23:22:54,052 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6aa4c76d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:54, skipping insertion in model container [2024-11-07 23:22:54,053 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:22:54" (1/1) ... [2024-11-07 23:22:54,078 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 23:22:54,389 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 23:22:54,396 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 23:22:54,445 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 23:22:54,485 INFO L204 MainTranslator]: Completed translation [2024-11-07 23:22:54,486 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:54 WrapperNode [2024-11-07 23:22:54,486 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 23:22:54,487 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 23:22:54,488 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 23:22:54,488 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 23:22:54,494 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:54" (1/1) ... [2024-11-07 23:22:54,506 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:54" (1/1) ... [2024-11-07 23:22:54,523 INFO L138 Inliner]: procedures = 168, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 39 [2024-11-07 23:22:54,524 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 23:22:54,524 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 23:22:54,524 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 23:22:54,524 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 23:22:54,532 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:54" (1/1) ... [2024-11-07 23:22:54,533 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:54" (1/1) ... [2024-11-07 23:22:54,535 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:54" (1/1) ... [2024-11-07 23:22:54,545 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-07 23:22:54,547 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:54" (1/1) ... [2024-11-07 23:22:54,547 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:54" (1/1) ... [2024-11-07 23:22:54,555 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:54" (1/1) ... [2024-11-07 23:22:54,558 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:54" (1/1) ... [2024-11-07 23:22:54,561 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:54" (1/1) ... [2024-11-07 23:22:54,561 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:54" (1/1) ... [2024-11-07 23:22:54,566 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 23:22:54,567 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 23:22:54,567 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 23:22:54,567 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 23:22:54,568 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:54" (1/1) ... [2024-11-07 23:22:54,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 23:22:54,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:22:54,597 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 23:22:54,599 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 23:22:54,619 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-07 23:22:54,619 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-07 23:22:54,620 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-07 23:22:54,620 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-07 23:22:54,620 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-07 23:22:54,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 23:22:54,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 23:22:54,620 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-07 23:22:54,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 23:22:54,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 23:22:54,621 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 23:22:54,721 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 23:22:54,722 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 23:22:54,856 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 23:22:54,856 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 23:22:54,946 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 23:22:54,949 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-07 23:22:54,949 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:22:54 BoogieIcfgContainer [2024-11-07 23:22:54,949 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 23:22:54,951 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 23:22:54,953 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 23:22:54,957 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 23:22:54,957 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 11:22:54" (1/3) ... [2024-11-07 23:22:54,958 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29582dec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:22:54, skipping insertion in model container [2024-11-07 23:22:54,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:22:54" (2/3) ... [2024-11-07 23:22:54,958 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29582dec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:22:54, skipping insertion in model container [2024-11-07 23:22:54,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:22:54" (3/3) ... [2024-11-07 23:22:54,959 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longer-2.i [2024-11-07 23:22:54,974 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 23:22:54,975 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-07 23:22:54,975 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 23:22:55,044 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-07 23:22:55,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 32 transitions, 72 flow [2024-11-07 23:22:55,108 INFO L124 PetriNetUnfolderBase]: 2/30 cut-off events. [2024-11-07 23:22:55,110 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 23:22:55,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 30 events. 2/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 73 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2024-11-07 23:22:55,113 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 32 transitions, 72 flow [2024-11-07 23:22:55,115 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 30 transitions, 66 flow [2024-11-07 23:22:55,121 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 23:22:55,131 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;@58ebd539, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 23:22:55,131 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-07 23:22:55,136 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 23:22:55,137 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-11-07 23:22:55,137 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 23:22:55,137 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:22:55,138 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-07 23:22:55,138 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-07 23:22:55,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:22:55,144 INFO L85 PathProgramCache]: Analyzing trace with hash 213710731, now seen corresponding path program 1 times [2024-11-07 23:22:55,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:22:55,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013502046] [2024-11-07 23:22:55,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:22:55,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:22:55,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:22:55,315 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 23:22:55,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:22:55,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013502046] [2024-11-07 23:22:55,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013502046] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:22:55,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:22:55,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 23:22:55,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444462583] [2024-11-07 23:22:55,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:22:55,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 23:22:55,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:22:55,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 23:22:55,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 23:22:55,359 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-07 23:22:55,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 23:22:55,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:22:55,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-07 23:22:55,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:22:55,554 INFO L124 PetriNetUnfolderBase]: 288/572 cut-off events. [2024-11-07 23:22:55,554 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-07 23:22:55,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1055 conditions, 572 events. 288/572 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3049 event pairs, 118 based on Foata normal form. 0/427 useless extension candidates. Maximal degree in co-relation 1045. Up to 241 conditions per place. [2024-11-07 23:22:55,563 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 27 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2024-11-07 23:22:55,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 42 transitions, 150 flow [2024-11-07 23:22:55,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 23:22:55,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 23:22:55,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2024-11-07 23:22:55,573 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7604166666666666 [2024-11-07 23:22:55,574 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 66 flow. Second operand 3 states and 73 transitions. [2024-11-07 23:22:55,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 42 transitions, 150 flow [2024-11-07 23:22:55,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 42 transitions, 148 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 23:22:55,580 INFO L231 Difference]: Finished difference. Result has 37 places, 32 transitions, 86 flow [2024-11-07 23:22:55,582 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=37, PETRI_TRANSITIONS=32} [2024-11-07 23:22:55,586 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 2 predicate places. [2024-11-07 23:22:55,586 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 32 transitions, 86 flow [2024-11-07 23:22:55,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 23:22:55,586 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:22:55,586 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-07 23:22:55,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 23:22:55,587 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-07 23:22:55,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:22:55,590 INFO L85 PathProgramCache]: Analyzing trace with hash 213710732, now seen corresponding path program 1 times [2024-11-07 23:22:55,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:22:55,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108569201] [2024-11-07 23:22:55,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:22:55,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:22:55,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:22:55,669 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 23:22:55,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:22:55,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108569201] [2024-11-07 23:22:55,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108569201] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:22:55,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:22:55,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 23:22:55,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501545035] [2024-11-07 23:22:55,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:22:55,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 23:22:55,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:22:55,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 23:22:55,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 23:22:55,674 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-07 23:22:55,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 23:22:55,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:22:55,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-07 23:22:55,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:22:55,804 INFO L124 PetriNetUnfolderBase]: 279/583 cut-off events. [2024-11-07 23:22:55,805 INFO L125 PetriNetUnfolderBase]: For 119/119 co-relation queries the response was YES. [2024-11-07 23:22:55,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1163 conditions, 583 events. 279/583 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3026 event pairs, 102 based on Foata normal form. 16/530 useless extension candidates. Maximal degree in co-relation 1151. Up to 266 conditions per place. [2024-11-07 23:22:55,809 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 27 selfloop transitions, 4 changer transitions 0/43 dead transitions. [2024-11-07 23:22:55,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 43 transitions, 174 flow [2024-11-07 23:22:55,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 23:22:55,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 23:22:55,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2024-11-07 23:22:55,811 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-11-07 23:22:55,811 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 86 flow. Second operand 3 states and 72 transitions. [2024-11-07 23:22:55,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 43 transitions, 174 flow [2024-11-07 23:22:55,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 43 transitions, 166 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 23:22:55,813 INFO L231 Difference]: Finished difference. Result has 38 places, 33 transitions, 100 flow [2024-11-07 23:22:55,813 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=38, PETRI_TRANSITIONS=33} [2024-11-07 23:22:55,814 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2024-11-07 23:22:55,814 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 100 flow [2024-11-07 23:22:55,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 23:22:55,814 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:22:55,814 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:22:55,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 23:22:55,815 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-07 23:22:55,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:22:55,815 INFO L85 PathProgramCache]: Analyzing trace with hash -782409202, now seen corresponding path program 1 times [2024-11-07 23:22:55,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:22:55,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592879806] [2024-11-07 23:22:55,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:22:55,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:22:55,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:22:55,898 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 23:22:55,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:22:55,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592879806] [2024-11-07 23:22:55,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592879806] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:22:55,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:22:55,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 23:22:55,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049557783] [2024-11-07 23:22:55,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:22:55,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:22:55,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:22:55,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:22:55,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:22:55,914 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-07 23:22:55,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 23:22:55,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:22:55,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-07 23:22:55,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:22:56,131 INFO L124 PetriNetUnfolderBase]: 661/1318 cut-off events. [2024-11-07 23:22:56,131 INFO L125 PetriNetUnfolderBase]: For 433/433 co-relation queries the response was YES. [2024-11-07 23:22:56,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2743 conditions, 1318 events. 661/1318 cut-off events. For 433/433 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 8108 event pairs, 260 based on Foata normal form. 64/1231 useless extension candidates. Maximal degree in co-relation 2730. Up to 721 conditions per place. [2024-11-07 23:22:56,141 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 50 selfloop transitions, 3 changer transitions 0/62 dead transitions. [2024-11-07 23:22:56,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 62 transitions, 302 flow [2024-11-07 23:22:56,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:22:56,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:22:56,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2024-11-07 23:22:56,142 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7265625 [2024-11-07 23:22:56,142 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 100 flow. Second operand 4 states and 93 transitions. [2024-11-07 23:22:56,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 62 transitions, 302 flow [2024-11-07 23:22:56,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 62 transitions, 294 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 23:22:56,146 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 120 flow [2024-11-07 23:22:56,146 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2024-11-07 23:22:56,147 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 7 predicate places. [2024-11-07 23:22:56,147 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 120 flow [2024-11-07 23:22:56,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 23:22:56,148 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:22:56,148 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:22:56,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 23:22:56,148 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-07 23:22:56,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:22:56,149 INFO L85 PathProgramCache]: Analyzing trace with hash -790923469, now seen corresponding path program 1 times [2024-11-07 23:22:56,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:22:56,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794744447] [2024-11-07 23:22:56,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:22:56,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:22:56,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:22:56,209 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 23:22:56,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:22:56,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794744447] [2024-11-07 23:22:56,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794744447] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:22:56,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:22:56,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 23:22:56,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643896520] [2024-11-07 23:22:56,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:22:56,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 23:22:56,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:22:56,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 23:22:56,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 23:22:56,214 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-07 23:22:56,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 23:22:56,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:22:56,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-07 23:22:56,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:22:56,359 INFO L124 PetriNetUnfolderBase]: 439/1042 cut-off events. [2024-11-07 23:22:56,360 INFO L125 PetriNetUnfolderBase]: For 448/448 co-relation queries the response was YES. [2024-11-07 23:22:56,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2341 conditions, 1042 events. 439/1042 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 6779 event pairs, 151 based on Foata normal form. 0/965 useless extension candidates. Maximal degree in co-relation 2326. Up to 459 conditions per place. [2024-11-07 23:22:56,368 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 37 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2024-11-07 23:22:56,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 53 transitions, 267 flow [2024-11-07 23:22:56,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 23:22:56,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 23:22:56,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions. [2024-11-07 23:22:56,372 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.78125 [2024-11-07 23:22:56,373 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 120 flow. Second operand 3 states and 75 transitions. [2024-11-07 23:22:56,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 53 transitions, 267 flow [2024-11-07 23:22:56,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 53 transitions, 264 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 23:22:56,376 INFO L231 Difference]: Finished difference. Result has 45 places, 37 transitions, 140 flow [2024-11-07 23:22:56,377 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=45, PETRI_TRANSITIONS=37} [2024-11-07 23:22:56,378 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 10 predicate places. [2024-11-07 23:22:56,378 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 37 transitions, 140 flow [2024-11-07 23:22:56,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 23:22:56,379 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:22:56,379 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:22:56,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 23:22:56,379 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-07 23:22:56,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:22:56,380 INFO L85 PathProgramCache]: Analyzing trace with hash -790923468, now seen corresponding path program 1 times [2024-11-07 23:22:56,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:22:56,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043815113] [2024-11-07 23:22:56,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:22:56,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:22:56,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:22:56,436 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 23:22:56,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:22:56,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043815113] [2024-11-07 23:22:56,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043815113] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:22:56,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:22:56,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 23:22:56,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213154271] [2024-11-07 23:22:56,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:22:56,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 23:22:56,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:22:56,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 23:22:56,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 23:22:56,440 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-07 23:22:56,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 37 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 23:22:56,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:22:56,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-07 23:22:56,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:22:56,565 INFO L124 PetriNetUnfolderBase]: 417/1032 cut-off events. [2024-11-07 23:22:56,565 INFO L125 PetriNetUnfolderBase]: For 603/603 co-relation queries the response was YES. [2024-11-07 23:22:56,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2472 conditions, 1032 events. 417/1032 cut-off events. For 603/603 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6801 event pairs, 117 based on Foata normal form. 24/1015 useless extension candidates. Maximal degree in co-relation 2454. Up to 483 conditions per place. [2024-11-07 23:22:56,573 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 37 selfloop transitions, 4 changer transitions 0/54 dead transitions. [2024-11-07 23:22:56,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 54 transitions, 290 flow [2024-11-07 23:22:56,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 23:22:56,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 23:22:56,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 74 transitions. [2024-11-07 23:22:56,575 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7708333333333334 [2024-11-07 23:22:56,575 INFO L175 Difference]: Start difference. First operand has 45 places, 37 transitions, 140 flow. Second operand 3 states and 74 transitions. [2024-11-07 23:22:56,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 54 transitions, 290 flow [2024-11-07 23:22:56,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 54 transitions, 282 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 23:22:56,579 INFO L231 Difference]: Finished difference. Result has 46 places, 38 transitions, 154 flow [2024-11-07 23:22:56,579 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=46, PETRI_TRANSITIONS=38} [2024-11-07 23:22:56,581 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 11 predicate places. [2024-11-07 23:22:56,581 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 38 transitions, 154 flow [2024-11-07 23:22:56,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 23:22:56,582 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:22:56,582 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:22:56,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-07 23:22:56,582 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-07 23:22:56,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:22:56,582 INFO L85 PathProgramCache]: Analyzing trace with hash 131766550, now seen corresponding path program 1 times [2024-11-07 23:22:56,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:22:56,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703128149] [2024-11-07 23:22:56,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:22:56,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:22:56,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:22:56,637 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 23:22:56,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:22:56,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703128149] [2024-11-07 23:22:56,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703128149] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:22:56,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:22:56,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 23:22:56,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518199138] [2024-11-07 23:22:56,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:22:56,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:22:56,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:22:56,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:22:56,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:22:56,650 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-07 23:22:56,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 38 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 23:22:56,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:22:56,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-07 23:22:56,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:22:56,821 INFO L124 PetriNetUnfolderBase]: 661/1357 cut-off events. [2024-11-07 23:22:56,821 INFO L125 PetriNetUnfolderBase]: For 1033/1149 co-relation queries the response was YES. [2024-11-07 23:22:56,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3382 conditions, 1357 events. 661/1357 cut-off events. For 1033/1149 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 8942 event pairs, 378 based on Foata normal form. 87/1394 useless extension candidates. Maximal degree in co-relation 3363. Up to 853 conditions per place. [2024-11-07 23:22:56,831 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 51 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2024-11-07 23:22:56,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 64 transitions, 376 flow [2024-11-07 23:22:56,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:22:56,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:22:56,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 89 transitions. [2024-11-07 23:22:56,832 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6953125 [2024-11-07 23:22:56,832 INFO L175 Difference]: Start difference. First operand has 46 places, 38 transitions, 154 flow. Second operand 4 states and 89 transitions. [2024-11-07 23:22:56,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 64 transitions, 376 flow [2024-11-07 23:22:56,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 64 transitions, 368 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 23:22:56,835 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 174 flow [2024-11-07 23:22:56,838 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2024-11-07 23:22:56,839 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 15 predicate places. [2024-11-07 23:22:56,839 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 174 flow [2024-11-07 23:22:56,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 23:22:56,840 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:22:56,840 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:22:56,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-07 23:22:56,840 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-07 23:22:56,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:22:56,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1215453567, now seen corresponding path program 1 times [2024-11-07 23:22:56,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:22:56,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901569739] [2024-11-07 23:22:56,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:22:56,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:22:56,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:22:56,894 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 23:22:56,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:22:56,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901569739] [2024-11-07 23:22:56,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901569739] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:22:56,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:22:56,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 23:22:56,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166799919] [2024-11-07 23:22:56,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:22:56,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:22:56,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:22:56,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:22:56,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:22:56,903 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-07 23:22:56,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 174 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 23:22:56,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:22:56,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-07 23:22:56,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:22:57,084 INFO L124 PetriNetUnfolderBase]: 553/1324 cut-off events. [2024-11-07 23:22:57,084 INFO L125 PetriNetUnfolderBase]: For 1098/1179 co-relation queries the response was YES. [2024-11-07 23:22:57,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3487 conditions, 1324 events. 553/1324 cut-off events. For 1098/1179 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9415 event pairs, 147 based on Foata normal form. 75/1348 useless extension candidates. Maximal degree in co-relation 3466. Up to 422 conditions per place. [2024-11-07 23:22:57,093 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 51 selfloop transitions, 9 changer transitions 0/74 dead transitions. [2024-11-07 23:22:57,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 74 transitions, 435 flow [2024-11-07 23:22:57,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 23:22:57,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 23:22:57,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-11-07 23:22:57,094 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.74375 [2024-11-07 23:22:57,094 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 174 flow. Second operand 5 states and 119 transitions. [2024-11-07 23:22:57,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 74 transitions, 435 flow [2024-11-07 23:22:57,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 74 transitions, 430 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 23:22:57,097 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 258 flow [2024-11-07 23:22:57,097 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=258, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2024-11-07 23:22:57,097 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 21 predicate places. [2024-11-07 23:22:57,097 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 258 flow [2024-11-07 23:22:57,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 23:22:57,098 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:22:57,098 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:22:57,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-07 23:22:57,098 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-07 23:22:57,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:22:57,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1197405986, now seen corresponding path program 1 times [2024-11-07 23:22:57,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:22:57,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179182579] [2024-11-07 23:22:57,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:22:57,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:22:57,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:22:57,130 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 23:22:57,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:22:57,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179182579] [2024-11-07 23:22:57,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179182579] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:22:57,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:22:57,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 23:22:57,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946734321] [2024-11-07 23:22:57,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:22:57,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:22:57,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:22:57,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:22:57,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:22:57,137 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-07 23:22:57,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 258 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 23:22:57,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:22:57,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-07 23:22:57,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:22:57,337 INFO L124 PetriNetUnfolderBase]: 608/1500 cut-off events. [2024-11-07 23:22:57,337 INFO L125 PetriNetUnfolderBase]: For 1768/1889 co-relation queries the response was YES. [2024-11-07 23:22:57,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4083 conditions, 1500 events. 608/1500 cut-off events. For 1768/1889 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 10885 event pairs, 81 based on Foata normal form. 68/1532 useless extension candidates. Maximal degree in co-relation 4058. Up to 509 conditions per place. [2024-11-07 23:22:57,346 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 55 selfloop transitions, 12 changer transitions 0/81 dead transitions. [2024-11-07 23:22:57,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 81 transitions, 545 flow [2024-11-07 23:22:57,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 23:22:57,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 23:22:57,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2024-11-07 23:22:57,347 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.725 [2024-11-07 23:22:57,347 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 258 flow. Second operand 5 states and 116 transitions. [2024-11-07 23:22:57,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 81 transitions, 545 flow [2024-11-07 23:22:57,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 81 transitions, 543 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-07 23:22:57,353 INFO L231 Difference]: Finished difference. Result has 62 places, 52 transitions, 328 flow [2024-11-07 23:22:57,353 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=328, PETRI_PLACES=62, PETRI_TRANSITIONS=52} [2024-11-07 23:22:57,354 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 27 predicate places. [2024-11-07 23:22:57,354 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 52 transitions, 328 flow [2024-11-07 23:22:57,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 23:22:57,354 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:22:57,354 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:22:57,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-07 23:22:57,354 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-07 23:22:57,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:22:57,355 INFO L85 PathProgramCache]: Analyzing trace with hash -523195646, now seen corresponding path program 1 times [2024-11-07 23:22:57,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:22:57,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206563341] [2024-11-07 23:22:57,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:22:57,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:22:57,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:22:57,404 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 23:22:57,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:22:57,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206563341] [2024-11-07 23:22:57,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206563341] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:22:57,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:22:57,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 23:22:57,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294900200] [2024-11-07 23:22:57,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:22:57,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:22:57,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:22:57,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:22:57,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:22:57,411 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-07 23:22:57,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 52 transitions, 328 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 23:22:57,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:22:57,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-07 23:22:57,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:22:57,639 INFO L124 PetriNetUnfolderBase]: 710/1711 cut-off events. [2024-11-07 23:22:57,639 INFO L125 PetriNetUnfolderBase]: For 3112/3238 co-relation queries the response was YES. [2024-11-07 23:22:57,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5002 conditions, 1711 events. 710/1711 cut-off events. For 3112/3238 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 12340 event pairs, 142 based on Foata normal form. 78/1738 useless extension candidates. Maximal degree in co-relation 4973. Up to 720 conditions per place. [2024-11-07 23:22:57,649 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 60 selfloop transitions, 13 changer transitions 0/87 dead transitions. [2024-11-07 23:22:57,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 87 transitions, 643 flow [2024-11-07 23:22:57,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 23:22:57,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 23:22:57,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2024-11-07 23:22:57,651 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7625 [2024-11-07 23:22:57,651 INFO L175 Difference]: Start difference. First operand has 62 places, 52 transitions, 328 flow. Second operand 5 states and 122 transitions. [2024-11-07 23:22:57,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 87 transitions, 643 flow [2024-11-07 23:22:57,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 87 transitions, 630 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-07 23:22:57,657 INFO L231 Difference]: Finished difference. Result has 69 places, 57 transitions, 427 flow [2024-11-07 23:22:57,657 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=427, PETRI_PLACES=69, PETRI_TRANSITIONS=57} [2024-11-07 23:22:57,658 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 34 predicate places. [2024-11-07 23:22:57,658 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 57 transitions, 427 flow [2024-11-07 23:22:57,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 23:22:57,658 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:22:57,658 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:22:57,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-07 23:22:57,658 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-07 23:22:57,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:22:57,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1197399147, now seen corresponding path program 1 times [2024-11-07 23:22:57,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:22:57,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457641156] [2024-11-07 23:22:57,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:22:57,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:22:57,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:22:57,710 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 23:22:57,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:22:57,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457641156] [2024-11-07 23:22:57,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457641156] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:22:57,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:22:57,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 23:22:57,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166107499] [2024-11-07 23:22:57,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:22:57,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:22:57,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:22:57,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:22:57,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:22:57,718 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-07 23:22:57,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 57 transitions, 427 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 23:22:57,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:22:57,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-07 23:22:57,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:22:57,878 INFO L124 PetriNetUnfolderBase]: 558/1313 cut-off events. [2024-11-07 23:22:57,878 INFO L125 PetriNetUnfolderBase]: For 3780/3938 co-relation queries the response was YES. [2024-11-07 23:22:57,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3835 conditions, 1313 events. 558/1313 cut-off events. For 3780/3938 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 8784 event pairs, 418 based on Foata normal form. 129/1361 useless extension candidates. Maximal degree in co-relation 3801. Up to 934 conditions per place. [2024-11-07 23:22:57,891 INFO L140 encePairwiseOnDemand]: 29/32 looper letters, 31 selfloop transitions, 1 changer transitions 0/46 dead transitions. [2024-11-07 23:22:57,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 46 transitions, 352 flow [2024-11-07 23:22:57,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 23:22:57,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 23:22:57,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2024-11-07 23:22:57,892 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-11-07 23:22:57,892 INFO L175 Difference]: Start difference. First operand has 69 places, 57 transitions, 427 flow. Second operand 3 states and 60 transitions. [2024-11-07 23:22:57,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 46 transitions, 352 flow [2024-11-07 23:22:57,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 46 transitions, 322 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-11-07 23:22:57,901 INFO L231 Difference]: Finished difference. Result has 62 places, 46 transitions, 260 flow [2024-11-07 23:22:57,901 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=260, PETRI_PLACES=62, PETRI_TRANSITIONS=46} [2024-11-07 23:22:57,902 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 27 predicate places. [2024-11-07 23:22:57,902 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 46 transitions, 260 flow [2024-11-07 23:22:57,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 23:22:57,902 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:22:57,902 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-07 23:22:57,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-07 23:22:57,902 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-07 23:22:57,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:22:57,903 INFO L85 PathProgramCache]: Analyzing trace with hash -516534008, now seen corresponding path program 1 times [2024-11-07 23:22:57,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:22:57,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090943994] [2024-11-07 23:22:57,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:22:57,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:22:57,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:22:57,979 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 23:22:57,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:22:57,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090943994] [2024-11-07 23:22:57,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090943994] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:22:57,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897152984] [2024-11-07 23:22:57,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:22:57,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:22:57,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:22:57,982 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 23:22:57,984 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 23:22:58,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:22:58,043 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-07 23:22:58,045 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:22:58,097 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 23:22:58,097 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 23:22:58,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897152984] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:22:58,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 23:22:58,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-07 23:22:58,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100507864] [2024-11-07 23:22:58,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:22:58,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 23:22:58,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:22:58,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 23:22:58,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-07 23:22:58,107 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-11-07 23:22:58,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 46 transitions, 260 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 23:22:58,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:22:58,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-11-07 23:22:58,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:22:58,337 INFO L124 PetriNetUnfolderBase]: 1036/2005 cut-off events. [2024-11-07 23:22:58,338 INFO L125 PetriNetUnfolderBase]: For 2333/2478 co-relation queries the response was YES. [2024-11-07 23:22:58,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5686 conditions, 2005 events. 1036/2005 cut-off events. For 2333/2478 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 13150 event pairs, 145 based on Foata normal form. 122/2005 useless extension candidates. Maximal degree in co-relation 5660. Up to 785 conditions per place. [2024-11-07 23:22:58,353 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 57 selfloop transitions, 6 changer transitions 0/72 dead transitions. [2024-11-07 23:22:58,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 72 transitions, 525 flow [2024-11-07 23:22:58,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:22:58,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:22:58,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 78 transitions. [2024-11-07 23:22:58,354 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.609375 [2024-11-07 23:22:58,355 INFO L175 Difference]: Start difference. First operand has 62 places, 46 transitions, 260 flow. Second operand 4 states and 78 transitions. [2024-11-07 23:22:58,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 72 transitions, 525 flow [2024-11-07 23:22:58,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 72 transitions, 524 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 23:22:58,361 INFO L231 Difference]: Finished difference. Result has 63 places, 45 transitions, 267 flow [2024-11-07 23:22:58,361 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=267, PETRI_PLACES=63, PETRI_TRANSITIONS=45} [2024-11-07 23:22:58,361 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 28 predicate places. [2024-11-07 23:22:58,361 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 45 transitions, 267 flow [2024-11-07 23:22:58,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 23:22:58,362 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:22:58,362 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-07 23:22:58,379 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 23:22:58,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-07 23:22:58,563 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-07 23:22:58,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:22:58,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1167315176, now seen corresponding path program 1 times [2024-11-07 23:22:58,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:22:58,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563136074] [2024-11-07 23:22:58,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:22:58,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:22:58,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:22:58,606 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 23:22:58,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:22:58,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563136074] [2024-11-07 23:22:58,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563136074] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:22:58,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:22:58,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 23:22:58,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793173141] [2024-11-07 23:22:58,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:22:58,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:22:58,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:22:58,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:22:58,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:22:58,615 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-11-07 23:22:58,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 45 transitions, 267 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 23:22:58,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:22:58,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-11-07 23:22:58,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:22:58,827 INFO L124 PetriNetUnfolderBase]: 883/1891 cut-off events. [2024-11-07 23:22:58,827 INFO L125 PetriNetUnfolderBase]: For 2718/2799 co-relation queries the response was YES. [2024-11-07 23:22:58,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5512 conditions, 1891 events. 883/1891 cut-off events. For 2718/2799 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 12757 event pairs, 246 based on Foata normal form. 108/1971 useless extension candidates. Maximal degree in co-relation 5486. Up to 726 conditions per place. [2024-11-07 23:22:58,837 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 57 selfloop transitions, 6 changer transitions 0/72 dead transitions. [2024-11-07 23:22:58,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 72 transitions, 534 flow [2024-11-07 23:22:58,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:22:58,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:22:58,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 78 transitions. [2024-11-07 23:22:58,838 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.609375 [2024-11-07 23:22:58,838 INFO L175 Difference]: Start difference. First operand has 63 places, 45 transitions, 267 flow. Second operand 4 states and 78 transitions. [2024-11-07 23:22:58,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 72 transitions, 534 flow [2024-11-07 23:22:58,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 72 transitions, 522 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-07 23:22:58,845 INFO L231 Difference]: Finished difference. Result has 63 places, 45 transitions, 271 flow [2024-11-07 23:22:58,846 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=271, PETRI_PLACES=63, PETRI_TRANSITIONS=45} [2024-11-07 23:22:58,847 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 28 predicate places. [2024-11-07 23:22:58,847 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 45 transitions, 271 flow [2024-11-07 23:22:58,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 23:22:58,848 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:22:58,848 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:22:58,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-07 23:22:58,848 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-07 23:22:58,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:22:58,849 INFO L85 PathProgramCache]: Analyzing trace with hash 430599243, now seen corresponding path program 1 times [2024-11-07 23:22:58,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:22:58,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206904561] [2024-11-07 23:22:58,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:22:58,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:22:58,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:22:58,920 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 23:22:58,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:22:58,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206904561] [2024-11-07 23:22:58,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206904561] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:22:58,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605546286] [2024-11-07 23:22:58,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:22:58,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:22:58,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:22:58,924 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 23:22:58,925 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 23:22:58,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:22:58,983 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-07 23:22:58,984 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:22:59,013 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 23:22:59,014 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 23:22:59,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605546286] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:22:59,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 23:22:59,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-07 23:22:59,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434395216] [2024-11-07 23:22:59,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:22:59,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 23:22:59,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:22:59,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 23:22:59,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-07 23:22:59,031 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-07 23:22:59,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 45 transitions, 271 flow. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 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 23:22:59,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:22:59,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-07 23:22:59,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:22:59,301 INFO L124 PetriNetUnfolderBase]: 845/1729 cut-off events. [2024-11-07 23:22:59,301 INFO L125 PetriNetUnfolderBase]: For 3284/3338 co-relation queries the response was YES. [2024-11-07 23:22:59,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5174 conditions, 1729 events. 845/1729 cut-off events. For 3284/3338 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 11376 event pairs, 70 based on Foata normal form. 123/1774 useless extension candidates. Maximal degree in co-relation 5148. Up to 562 conditions per place. [2024-11-07 23:22:59,312 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 71 selfloop transitions, 6 changer transitions 1/87 dead transitions. [2024-11-07 23:22:59,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 87 transitions, 686 flow [2024-11-07 23:22:59,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 23:22:59,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 23:22:59,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 116 transitions. [2024-11-07 23:22:59,313 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-11-07 23:22:59,314 INFO L175 Difference]: Start difference. First operand has 63 places, 45 transitions, 271 flow. Second operand 6 states and 116 transitions. [2024-11-07 23:22:59,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 87 transitions, 686 flow [2024-11-07 23:22:59,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 87 transitions, 666 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 23:22:59,322 INFO L231 Difference]: Finished difference. Result has 65 places, 44 transitions, 271 flow [2024-11-07 23:22:59,322 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=271, PETRI_PLACES=65, PETRI_TRANSITIONS=44} [2024-11-07 23:22:59,323 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 30 predicate places. [2024-11-07 23:22:59,323 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 44 transitions, 271 flow [2024-11-07 23:22:59,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 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 23:22:59,323 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:22:59,323 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:22:59,346 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 23:22:59,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:22:59,524 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-07 23:22:59,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:22:59,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1787995972, now seen corresponding path program 1 times [2024-11-07 23:22:59,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:22:59,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556984269] [2024-11-07 23:22:59,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:22:59,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:22:59,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:22:59,572 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 23:22:59,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:22:59,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556984269] [2024-11-07 23:22:59,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556984269] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:22:59,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290284847] [2024-11-07 23:22:59,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:22:59,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:22:59,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:22:59,574 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 23:22:59,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-07 23:22:59,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:22:59,639 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-07 23:22:59,639 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:22:59,665 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 23:22:59,665 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:22:59,714 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 23:22:59,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290284847] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:22:59,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:22:59,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-07 23:22:59,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274820811] [2024-11-07 23:22:59,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:22:59,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-07 23:22:59,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:22:59,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-07 23:22:59,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-07 23:22:59,729 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-07 23:22:59,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 44 transitions, 271 flow. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 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 23:22:59,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:22:59,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-07 23:22:59,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:22:59,973 INFO L124 PetriNetUnfolderBase]: 747/1715 cut-off events. [2024-11-07 23:22:59,973 INFO L125 PetriNetUnfolderBase]: For 3566/3614 co-relation queries the response was YES. [2024-11-07 23:22:59,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5235 conditions, 1715 events. 747/1715 cut-off events. For 3566/3614 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 10727 event pairs, 71 based on Foata normal form. 135/1829 useless extension candidates. Maximal degree in co-relation 5208. Up to 289 conditions per place. [2024-11-07 23:22:59,984 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 61 selfloop transitions, 12 changer transitions 4/89 dead transitions. [2024-11-07 23:22:59,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 89 transitions, 653 flow [2024-11-07 23:22:59,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 23:22:59,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 23:22:59,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-11-07 23:22:59,985 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2024-11-07 23:22:59,986 INFO L175 Difference]: Start difference. First operand has 65 places, 44 transitions, 271 flow. Second operand 7 states and 160 transitions. [2024-11-07 23:22:59,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 89 transitions, 653 flow [2024-11-07 23:22:59,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 89 transitions, 626 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-11-07 23:22:59,993 INFO L231 Difference]: Finished difference. Result has 72 places, 50 transitions, 375 flow [2024-11-07 23:22:59,993 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=375, PETRI_PLACES=72, PETRI_TRANSITIONS=50} [2024-11-07 23:22:59,993 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 37 predicate places. [2024-11-07 23:22:59,993 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 50 transitions, 375 flow [2024-11-07 23:22:59,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 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 23:22:59,994 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:22:59,994 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:23:00,011 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-07 23:23:00,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:23:00,199 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-07 23:23:00,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:23:00,199 INFO L85 PathProgramCache]: Analyzing trace with hash 463674896, now seen corresponding path program 1 times [2024-11-07 23:23:00,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:23:00,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488824734] [2024-11-07 23:23:00,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:23:00,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:23:00,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:23:00,239 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 23:23:00,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:23:00,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488824734] [2024-11-07 23:23:00,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488824734] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:23:00,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:23:00,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 23:23:00,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527921142] [2024-11-07 23:23:00,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:23:00,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:23:00,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:23:00,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:23:00,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:23:00,247 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-11-07 23:23:00,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 50 transitions, 375 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 23:23:00,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:23:00,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-11-07 23:23:00,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:23:00,482 INFO L124 PetriNetUnfolderBase]: 1190/2263 cut-off events. [2024-11-07 23:23:00,482 INFO L125 PetriNetUnfolderBase]: For 5912/5957 co-relation queries the response was YES. [2024-11-07 23:23:00,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7489 conditions, 2263 events. 1190/2263 cut-off events. For 5912/5957 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 13455 event pairs, 275 based on Foata normal form. 153/2382 useless extension candidates. Maximal degree in co-relation 7457. Up to 893 conditions per place. [2024-11-07 23:23:00,495 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 63 selfloop transitions, 6 changer transitions 0/77 dead transitions. [2024-11-07 23:23:00,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 77 transitions, 740 flow [2024-11-07 23:23:00,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:23:00,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:23:00,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 74 transitions. [2024-11-07 23:23:00,496 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.578125 [2024-11-07 23:23:00,496 INFO L175 Difference]: Start difference. First operand has 72 places, 50 transitions, 375 flow. Second operand 4 states and 74 transitions. [2024-11-07 23:23:00,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 77 transitions, 740 flow [2024-11-07 23:23:00,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 77 transitions, 705 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-11-07 23:23:00,532 INFO L231 Difference]: Finished difference. Result has 72 places, 50 transitions, 368 flow [2024-11-07 23:23:00,532 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=368, PETRI_PLACES=72, PETRI_TRANSITIONS=50} [2024-11-07 23:23:00,533 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 37 predicate places. [2024-11-07 23:23:00,533 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 50 transitions, 368 flow [2024-11-07 23:23:00,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 23:23:00,533 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:23:00,533 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:23:00,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-07 23:23:00,533 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-07 23:23:00,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:23:00,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1702380340, now seen corresponding path program 1 times [2024-11-07 23:23:00,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:23:00,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801678447] [2024-11-07 23:23:00,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:23:00,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:23:00,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:23:00,618 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:23:00,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:23:00,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801678447] [2024-11-07 23:23:00,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801678447] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:23:00,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167344434] [2024-11-07 23:23:00,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:23:00,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:23:00,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:23:00,621 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 23:23:00,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-07 23:23:00,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:23:00,686 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-07 23:23:00,687 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:23:00,738 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:23:00,738 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:23:00,814 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:23:00,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167344434] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:23:00,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:23:00,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-07 23:23:00,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335719265] [2024-11-07 23:23:00,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:23:00,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-07 23:23:00,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:23:00,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-07 23:23:00,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-07 23:23:00,834 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-07 23:23:00,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 50 transitions, 368 flow. Second operand has 12 states, 12 states have (on average 16.333333333333332) internal successors, (196), 12 states have internal predecessors, (196), 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 23:23:00,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:23:00,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-07 23:23:00,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:23:01,217 INFO L124 PetriNetUnfolderBase]: 972/2189 cut-off events. [2024-11-07 23:23:01,217 INFO L125 PetriNetUnfolderBase]: For 7431/7449 co-relation queries the response was YES. [2024-11-07 23:23:01,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7028 conditions, 2189 events. 972/2189 cut-off events. For 7431/7449 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 13043 event pairs, 35 based on Foata normal form. 120/2306 useless extension candidates. Maximal degree in co-relation 6997. Up to 277 conditions per place. [2024-11-07 23:23:01,226 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 78 selfloop transitions, 17 changer transitions 17/124 dead transitions. [2024-11-07 23:23:01,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 124 transitions, 946 flow [2024-11-07 23:23:01,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-07 23:23:01,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-07 23:23:01,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 270 transitions. [2024-11-07 23:23:01,228 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.703125 [2024-11-07 23:23:01,228 INFO L175 Difference]: Start difference. First operand has 72 places, 50 transitions, 368 flow. Second operand 12 states and 270 transitions. [2024-11-07 23:23:01,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 124 transitions, 946 flow [2024-11-07 23:23:01,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 124 transitions, 909 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-11-07 23:23:01,237 INFO L231 Difference]: Finished difference. Result has 87 places, 52 transitions, 427 flow [2024-11-07 23:23:01,237 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=427, PETRI_PLACES=87, PETRI_TRANSITIONS=52} [2024-11-07 23:23:01,237 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 52 predicate places. [2024-11-07 23:23:01,238 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 52 transitions, 427 flow [2024-11-07 23:23:01,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.333333333333332) internal successors, (196), 12 states have internal predecessors, (196), 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 23:23:01,238 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:23:01,238 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:23:01,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-07 23:23:01,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-07 23:23:01,439 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-07 23:23:01,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:23:01,439 INFO L85 PathProgramCache]: Analyzing trace with hash -550526186, now seen corresponding path program 1 times [2024-11-07 23:23:01,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:23:01,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027590876] [2024-11-07 23:23:01,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:23:01,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:23:01,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:23:01,550 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:23:01,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:23:01,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027590876] [2024-11-07 23:23:01,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027590876] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:23:01,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516377473] [2024-11-07 23:23:01,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:23:01,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:23:01,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:23:01,553 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 23:23:01,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-07 23:23:01,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:23:01,618 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-07 23:23:01,620 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:23:01,679 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:23:01,679 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:23:01,792 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:23:01,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516377473] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:23:01,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:23:01,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-11-07 23:23:01,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519593725] [2024-11-07 23:23:01,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:23:01,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-07 23:23:01,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:23:01,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-07 23:23:01,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-11-07 23:23:01,819 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-07 23:23:01,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 52 transitions, 427 flow. Second operand has 16 states, 16 states have (on average 16.25) internal successors, (260), 16 states have internal predecessors, (260), 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 23:23:01,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:23:01,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-07 23:23:01,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:23:02,371 INFO L124 PetriNetUnfolderBase]: 1422/3164 cut-off events. [2024-11-07 23:23:02,371 INFO L125 PetriNetUnfolderBase]: For 11451/11475 co-relation queries the response was YES. [2024-11-07 23:23:02,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10137 conditions, 3164 events. 1422/3164 cut-off events. For 11451/11475 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 19052 event pairs, 71 based on Foata normal form. 114/3263 useless extension candidates. Maximal degree in co-relation 10098. Up to 391 conditions per place. [2024-11-07 23:23:02,390 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 92 selfloop transitions, 24 changer transitions 25/153 dead transitions. [2024-11-07 23:23:02,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 153 transitions, 1222 flow [2024-11-07 23:23:02,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-07 23:23:02,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-07 23:23:02,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 336 transitions. [2024-11-07 23:23:02,392 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-11-07 23:23:02,392 INFO L175 Difference]: Start difference. First operand has 87 places, 52 transitions, 427 flow. Second operand 15 states and 336 transitions. [2024-11-07 23:23:02,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 153 transitions, 1222 flow [2024-11-07 23:23:02,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 153 transitions, 1209 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-07 23:23:02,407 INFO L231 Difference]: Finished difference. Result has 105 places, 60 transitions, 578 flow [2024-11-07 23:23:02,407 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=578, PETRI_PLACES=105, PETRI_TRANSITIONS=60} [2024-11-07 23:23:02,408 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 70 predicate places. [2024-11-07 23:23:02,408 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 60 transitions, 578 flow [2024-11-07 23:23:02,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 16.25) internal successors, (260), 16 states have internal predecessors, (260), 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 23:23:02,408 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:23:02,408 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:23:02,424 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-07 23:23:02,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-07 23:23:02,609 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-07 23:23:02,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:23:02,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1669441654, now seen corresponding path program 2 times [2024-11-07 23:23:02,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:23:02,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920880640] [2024-11-07 23:23:02,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:23:02,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:23:02,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:23:02,899 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:23:02,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:23:02,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920880640] [2024-11-07 23:23:02,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920880640] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:23:02,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25102416] [2024-11-07 23:23:02,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 23:23:02,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:23:02,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:23:02,903 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 23:23:02,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-07 23:23:02,977 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 23:23:02,977 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 23:23:02,978 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-07 23:23:02,980 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:23:03,087 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:23:03,088 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:23:03,371 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:23:03,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25102416] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:23:03,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:23:03,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 26 [2024-11-07 23:23:03,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134736386] [2024-11-07 23:23:03,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:23:03,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-07 23:23:03,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:23:03,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-07 23:23:03,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2024-11-07 23:23:03,419 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-07 23:23:03,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 60 transitions, 578 flow. Second operand has 28 states, 28 states have (on average 16.142857142857142) internal successors, (452), 28 states have internal predecessors, (452), 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 23:23:03,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:23:03,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-07 23:23:03,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:23:04,689 INFO L124 PetriNetUnfolderBase]: 2412/5357 cut-off events. [2024-11-07 23:23:04,689 INFO L125 PetriNetUnfolderBase]: For 28181/28199 co-relation queries the response was YES. [2024-11-07 23:23:04,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17423 conditions, 5357 events. 2412/5357 cut-off events. For 28181/28199 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 31928 event pairs, 35 based on Foata normal form. 216/5570 useless extension candidates. Maximal degree in co-relation 17376. Up to 709 conditions per place. [2024-11-07 23:23:04,715 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 158 selfloop transitions, 41 changer transitions 49/260 dead transitions. [2024-11-07 23:23:04,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 260 transitions, 2117 flow [2024-11-07 23:23:04,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-07 23:23:04,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-07 23:23:04,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 627 transitions. [2024-11-07 23:23:04,718 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6997767857142857 [2024-11-07 23:23:04,718 INFO L175 Difference]: Start difference. First operand has 105 places, 60 transitions, 578 flow. Second operand 28 states and 627 transitions. [2024-11-07 23:23:04,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 260 transitions, 2117 flow [2024-11-07 23:23:04,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 260 transitions, 2037 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-07 23:23:04,754 INFO L231 Difference]: Finished difference. Result has 139 places, 76 transitions, 840 flow [2024-11-07 23:23:04,754 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=840, PETRI_PLACES=139, PETRI_TRANSITIONS=76} [2024-11-07 23:23:04,754 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 104 predicate places. [2024-11-07 23:23:04,755 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 76 transitions, 840 flow [2024-11-07 23:23:04,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 16.142857142857142) internal successors, (452), 28 states have internal predecessors, (452), 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 23:23:04,755 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:23:04,755 INFO L204 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:23:04,772 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-07 23:23:04,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-07 23:23:04,956 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-07 23:23:04,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:23:04,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1964422650, now seen corresponding path program 2 times [2024-11-07 23:23:04,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:23:04,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900236506] [2024-11-07 23:23:04,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:23:04,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:23:04,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:23:05,532 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:23:05,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:23:05,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900236506] [2024-11-07 23:23:05,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900236506] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:23:05,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837862609] [2024-11-07 23:23:05,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 23:23:05,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:23:05,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:23:05,535 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 23:23:05,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-07 23:23:05,628 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 23:23:05,628 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 23:23:05,630 INFO L255 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-07 23:23:05,633 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:23:06,180 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 537 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 23:23:06,181 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 23:23:06,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837862609] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:23:06,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 23:23:06,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [23] total 46 [2024-11-07 23:23:06,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356199479] [2024-11-07 23:23:06,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:23:06,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-07 23:23:06,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:23:06,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-07 23:23:06,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=310, Invalid=1760, Unknown=0, NotChecked=0, Total=2070 [2024-11-07 23:23:06,210 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-11-07 23:23:06,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 76 transitions, 840 flow. Second operand has 23 states, 23 states have (on average 13.130434782608695) internal successors, (302), 23 states have internal predecessors, (302), 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 23:23:06,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:23:06,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-11-07 23:23:06,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:23:09,864 INFO L124 PetriNetUnfolderBase]: 15078/26727 cut-off events. [2024-11-07 23:23:09,864 INFO L125 PetriNetUnfolderBase]: For 69021/69021 co-relation queries the response was YES. [2024-11-07 23:23:09,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88125 conditions, 26727 events. 15078/26727 cut-off events. For 69021/69021 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 203457 event pairs, 265 based on Foata normal form. 368/27085 useless extension candidates. Maximal degree in co-relation 88075. Up to 4115 conditions per place. [2024-11-07 23:23:10,002 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 0 selfloop transitions, 0 changer transitions 591/591 dead transitions. [2024-11-07 23:23:10,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 591 transitions, 6811 flow [2024-11-07 23:23:10,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-07 23:23:10,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-07 23:23:10,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 460 transitions. [2024-11-07 23:23:10,005 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-11-07 23:23:10,005 INFO L175 Difference]: Start difference. First operand has 139 places, 76 transitions, 840 flow. Second operand 23 states and 460 transitions. [2024-11-07 23:23:10,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 591 transitions, 6811 flow [2024-11-07 23:23:10,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 591 transitions, 4980 flow, removed 22 selfloop flow, removed 48 redundant places. [2024-11-07 23:23:10,185 INFO L231 Difference]: Finished difference. Result has 108 places, 0 transitions, 0 flow [2024-11-07 23:23:10,185 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=0, PETRI_PLACES=108, PETRI_TRANSITIONS=0} [2024-11-07 23:23:10,186 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 73 predicate places. [2024-11-07 23:23:10,186 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 0 transitions, 0 flow [2024-11-07 23:23:10,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 13.130434782608695) internal successors, (302), 23 states have internal predecessors, (302), 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 23:23:10,191 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2024-11-07 23:23:10,191 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 18 remaining) [2024-11-07 23:23:10,191 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2024-11-07 23:23:10,191 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2024-11-07 23:23:10,191 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2024-11-07 23:23:10,191 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2024-11-07 23:23:10,192 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2024-11-07 23:23:10,192 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2024-11-07 23:23:10,192 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2024-11-07 23:23:10,192 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2024-11-07 23:23:10,192 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2024-11-07 23:23:10,192 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2024-11-07 23:23:10,192 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2024-11-07 23:23:10,192 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2024-11-07 23:23:10,192 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2024-11-07 23:23:10,193 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2024-11-07 23:23:10,193 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2024-11-07 23:23:10,193 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2024-11-07 23:23:10,209 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-07 23:23:10,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:23:10,394 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:23:10,398 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-07 23:23:10,399 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-07 23:23:10,403 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 11:23:10 BasicIcfg [2024-11-07 23:23:10,403 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-07 23:23:10,404 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-07 23:23:10,404 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-07 23:23:10,404 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-07 23:23:10,405 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:22:54" (3/4) ... [2024-11-07 23:23:10,406 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-07 23:23:10,408 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2024-11-07 23:23:10,408 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2024-11-07 23:23:10,411 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 33 nodes and edges [2024-11-07 23:23:10,411 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-07 23:23:10,411 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-07 23:23:10,411 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-07 23:23:10,474 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-07 23:23:10,476 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-07 23:23:10,476 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-07 23:23:10,476 INFO L158 Benchmark]: Toolchain (without parser) took 16429.28ms. Allocated memory was 117.4MB in the beginning and 813.7MB in the end (delta: 696.3MB). Free memory was 91.1MB in the beginning and 256.8MB in the end (delta: -165.7MB). Peak memory consumption was 530.9MB. Max. memory is 16.1GB. [2024-11-07 23:23:10,477 INFO L158 Benchmark]: CDTParser took 1.00ms. Allocated memory is still 117.4MB. Free memory is still 81.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-07 23:23:10,477 INFO L158 Benchmark]: CACSL2BoogieTranslator took 438.61ms. Allocated memory is still 117.4MB. Free memory was 90.9MB in the beginning and 71.8MB in the end (delta: 19.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-07 23:23:10,477 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.19ms. Allocated memory is still 117.4MB. Free memory was 71.8MB in the beginning and 70.3MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-07 23:23:10,477 INFO L158 Benchmark]: Boogie Preprocessor took 42.12ms. Allocated memory is still 117.4MB. Free memory was 70.3MB in the beginning and 68.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-07 23:23:10,478 INFO L158 Benchmark]: RCFGBuilder took 382.42ms. Allocated memory is still 117.4MB. Free memory was 68.7MB in the beginning and 49.6MB in the end (delta: 19.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-07 23:23:10,478 INFO L158 Benchmark]: TraceAbstraction took 15451.92ms. Allocated memory was 117.4MB in the beginning and 813.7MB in the end (delta: 696.3MB). Free memory was 48.9MB in the beginning and 262.8MB in the end (delta: -213.9MB). Peak memory consumption was 648.3MB. Max. memory is 16.1GB. [2024-11-07 23:23:10,478 INFO L158 Benchmark]: Witness Printer took 72.07ms. Allocated memory is still 813.7MB. Free memory was 262.8MB in the beginning and 256.8MB in the end (delta: 6.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-07 23:23:10,481 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.00ms. Allocated memory is still 117.4MB. Free memory is still 81.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 438.61ms. Allocated memory is still 117.4MB. Free memory was 90.9MB in the beginning and 71.8MB in the end (delta: 19.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.19ms. Allocated memory is still 117.4MB. Free memory was 71.8MB in the beginning and 70.3MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.12ms. Allocated memory is still 117.4MB. Free memory was 70.3MB in the beginning and 68.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 382.42ms. Allocated memory is still 117.4MB. Free memory was 68.7MB in the beginning and 49.6MB in the end (delta: 19.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 15451.92ms. Allocated memory was 117.4MB in the beginning and 813.7MB in the end (delta: 696.3MB). Free memory was 48.9MB in the beginning and 262.8MB in the end (delta: -213.9MB). Peak memory consumption was 648.3MB. Max. memory is 16.1GB. * Witness Printer took 72.07ms. Allocated memory is still 813.7MB. Free memory was 262.8MB in the beginning and 256.8MB in the end (delta: 6.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 698]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 698]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 706]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 706]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 704]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 704]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 55 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 15.3s, OverallIterations: 19, TraceHistogramMax: 12, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 9.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1845 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1778 mSDsluCounter, 148 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 125 mSDsCounter, 56 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2986 IncrementalHoareTripleChecker+Invalid, 3042 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 56 mSolverCounterUnsat, 23 mSDtfsCounter, 2986 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 579 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1481 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=840occurred in iteration=18, InterpolantAutomatonStates: 141, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 670 NumberOfCodeBlocks, 670 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 780 ConstructedInterpolants, 0 QuantifiedInterpolants, 2238 SizeOfPredicates, 37 NumberOfNonLiveVariables, 998 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 30 InterpolantComputations, 15 PerfectInterpolantSequences, 560/1680 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-07 23:23:10,501 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE