./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4f9af400 extending candidate: java ['java'] extending candidate: /usr/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/oracle-jdk-bin-*/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/openjdk-*/bin/java ['java', '/usr/bin/java'] extending candidate: /usr/lib/jvm/java-*-openjdk-amd64/bin/java ['java', '/usr/bin/java', '/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java', '/usr/lib/jvm/java-17-openjdk-amd64/bin/java', '/usr/lib/jvm/java-11-openjdk-amd64/bin/java', '/usr/lib/jvm/java-1.17.0-openjdk-amd64/bin/java'] ['/root/.sdkman/candidates/java/21.0.5-tem/bin/java', '-Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config', '-Xmx15G', '-Xms4m', '-jar', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar', '-data', '@noDefault', '-ultimatedata', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data', '-tc', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml', '-i', '../sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf', '--cacsl2boogietranslator.entry.function', 'main', '--witnessprinter.witness.directory', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux', '--witnessprinter.witness.filename', 'witness', '--witnessprinter.write.witness.besides.input.file', 'false', '--witnessprinter.graph.data.specification', 'CHECK( init(main()), LTL(G ! overflow) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '32bit', '--witnessprinter.graph.data.programhash', '48ddce9ee02b3ea4431cf137593b71facb450c3e223dbff4f116c3c0ac1377b5'] Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 48ddce9ee02b3ea4431cf137593b71facb450c3e223dbff4f116c3c0ac1377b5 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 23:37:13,592 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 23:37:13,700 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-07 23:37:13,705 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 23:37:13,705 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 23:37:13,735 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 23:37:13,736 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 23:37:13,736 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 23:37:13,736 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 23:37:13,736 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 23:37:13,737 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 23:37:13,737 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 23:37:13,737 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 23:37:13,737 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 23:37:13,737 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 23:37:13,737 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 23:37:13,737 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 23:37:13,737 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 23:37:13,737 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 23:37:13,738 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 23:37:13,738 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 23:37:13,738 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 23:37:13,738 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 23:37:13,738 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 23:37:13,738 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 23:37:13,738 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-07 23:37:13,738 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-07 23:37:13,738 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 23:37:13,738 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 23:37:13,738 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 23:37:13,738 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 23:37:13,738 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 23:37:13,738 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 23:37:13,738 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 23:37:13,739 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 23:37:13,739 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 23:37:13,739 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 23:37:13,739 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 23:37:13,739 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 23:37:13,739 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 23:37:13,739 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 23:37:13,739 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 23:37:13,739 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 23:37:13,739 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 23:37:13,739 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 -> 48ddce9ee02b3ea4431cf137593b71facb450c3e223dbff4f116c3c0ac1377b5 [2024-11-07 23:37:14,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 23:37:14,026 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 23:37:14,029 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 23:37:14,030 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 23:37:14,031 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 23:37:14,032 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c [2024-11-07 23:37:15,292 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 23:37:15,512 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 23:37:15,512 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c [2024-11-07 23:37:15,524 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/859368723/5439476d8ca54fa289e06cb7f232da9e/FLAGc9a4938e1 [2024-11-07 23:37:15,542 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/859368723/5439476d8ca54fa289e06cb7f232da9e [2024-11-07 23:37:15,547 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 23:37:15,548 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 23:37:15,550 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 23:37:15,551 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 23:37:15,555 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 23:37:15,556 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:37:15" (1/1) ... [2024-11-07 23:37:15,556 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52c67dcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:37:15, skipping insertion in model container [2024-11-07 23:37:15,557 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:37:15" (1/1) ... [2024-11-07 23:37:15,579 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 23:37:15,734 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 23:37:15,744 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 23:37:15,784 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 23:37:15,802 INFO L204 MainTranslator]: Completed translation [2024-11-07 23:37:15,803 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:37:15 WrapperNode [2024-11-07 23:37:15,803 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 23:37:15,804 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 23:37:15,804 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 23:37:15,804 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 23:37:15,810 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:37:15" (1/1) ... [2024-11-07 23:37:15,823 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:37:15" (1/1) ... [2024-11-07 23:37:15,876 INFO L138 Inliner]: procedures = 24, calls = 46, calls flagged for inlining = 22, calls inlined = 30, statements flattened = 499 [2024-11-07 23:37:15,876 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 23:37:15,877 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 23:37:15,877 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 23:37:15,877 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 23:37:15,888 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:37:15" (1/1) ... [2024-11-07 23:37:15,888 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:37:15" (1/1) ... [2024-11-07 23:37:15,896 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:37:15" (1/1) ... [2024-11-07 23:37:15,928 INFO L175 MemorySlicer]: Split 20 memory accesses to 2 slices as follows [2, 18]. 90 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-07 23:37:15,932 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:37:15" (1/1) ... [2024-11-07 23:37:15,932 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:37:15" (1/1) ... [2024-11-07 23:37:15,948 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:37:15" (1/1) ... [2024-11-07 23:37:15,961 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:37:15" (1/1) ... [2024-11-07 23:37:15,963 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:37:15" (1/1) ... [2024-11-07 23:37:15,969 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:37:15" (1/1) ... [2024-11-07 23:37:15,977 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 23:37:15,978 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 23:37:15,978 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 23:37:15,978 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 23:37:15,979 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:37:15" (1/1) ... [2024-11-07 23:37:15,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 23:37:16,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:37:16,027 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 23:37:16,034 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 23:37:16,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 23:37:16,056 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-07 23:37:16,057 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-07 23:37:16,058 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-07 23:37:16,058 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-07 23:37:16,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 23:37:16,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-07 23:37:16,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-07 23:37:16,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-07 23:37:16,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-07 23:37:16,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 23:37:16,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 23:37:16,058 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-07 23:37:16,058 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-07 23:37:16,061 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 23:37:16,167 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 23:37:16,168 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 23:37:16,963 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 23:37:16,963 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 23:37:17,582 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 23:37:17,584 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-07 23:37:17,585 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:37:17 BoogieIcfgContainer [2024-11-07 23:37:17,585 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 23:37:17,587 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 23:37:17,587 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 23:37:17,592 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 23:37:17,593 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 11:37:15" (1/3) ... [2024-11-07 23:37:17,594 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f1391e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:37:17, skipping insertion in model container [2024-11-07 23:37:17,594 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:37:15" (2/3) ... [2024-11-07 23:37:17,594 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f1391e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:37:17, skipping insertion in model container [2024-11-07 23:37:17,594 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:37:17" (3/3) ... [2024-11-07 23:37:17,596 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-symm.wvr.c [2024-11-07 23:37:17,611 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 23:37:17,611 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2024-11-07 23:37:17,611 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 23:37:17,752 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-07 23:37:17,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 169 transitions, 352 flow [2024-11-07 23:37:17,865 INFO L124 PetriNetUnfolderBase]: 26/167 cut-off events. [2024-11-07 23:37:17,867 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 23:37:17,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 167 events. 26/167 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 829 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 149. Up to 2 conditions per place. [2024-11-07 23:37:17,876 INFO L82 GeneralOperation]: Start removeDead. Operand has 150 places, 169 transitions, 352 flow [2024-11-07 23:37:17,882 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 147 places, 166 transitions, 344 flow [2024-11-07 23:37:17,890 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 23:37:17,901 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;@35e34e7d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 23:37:17,901 INFO L334 AbstractCegarLoop]: Starting to check reachability of 80 error locations. [2024-11-07 23:37:17,905 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 23:37:17,905 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-07 23:37:17,905 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 23:37:17,906 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:37:17,906 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-07 23:37:17,907 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-11-07 23:37:17,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:37:17,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1512952, now seen corresponding path program 1 times [2024-11-07 23:37:17,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:37:17,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549643719] [2024-11-07 23:37:17,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:37:17,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:37:18,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:37:18,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:37:18,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:37:18,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549643719] [2024-11-07 23:37:18,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549643719] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:37:18,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:37:18,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 23:37:18,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551599644] [2024-11-07 23:37:18,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:37:18,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:37:18,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:37:18,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:37:18,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:37:18,267 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 169 [2024-11-07 23:37:18,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 166 transitions, 344 flow. Second operand has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 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 23:37:18,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:37:18,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 169 [2024-11-07 23:37:18,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:37:19,278 INFO L124 PetriNetUnfolderBase]: 2890/6519 cut-off events. [2024-11-07 23:37:19,279 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2024-11-07 23:37:19,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10784 conditions, 6519 events. 2890/6519 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 58856 event pairs, 1812 based on Foata normal form. 4/5189 useless extension candidates. Maximal degree in co-relation 10584. Up to 4183 conditions per place. [2024-11-07 23:37:19,342 INFO L140 encePairwiseOnDemand]: 154/169 looper letters, 79 selfloop transitions, 7 changer transitions 2/168 dead transitions. [2024-11-07 23:37:19,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 168 transitions, 522 flow [2024-11-07 23:37:19,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:37:19,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:37:19,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 427 transitions. [2024-11-07 23:37:19,359 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6316568047337278 [2024-11-07 23:37:19,361 INFO L175 Difference]: Start difference. First operand has 147 places, 166 transitions, 344 flow. Second operand 4 states and 427 transitions. [2024-11-07 23:37:19,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 168 transitions, 522 flow [2024-11-07 23:37:19,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 168 transitions, 514 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-07 23:37:19,379 INFO L231 Difference]: Finished difference. Result has 147 places, 166 transitions, 383 flow [2024-11-07 23:37:19,382 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=383, PETRI_PLACES=147, PETRI_TRANSITIONS=166} [2024-11-07 23:37:19,385 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 0 predicate places. [2024-11-07 23:37:19,386 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 166 transitions, 383 flow [2024-11-07 23:37:19,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 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 23:37:19,387 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:37:19,387 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-07 23:37:19,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 23:37:19,387 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-11-07 23:37:19,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:37:19,388 INFO L85 PathProgramCache]: Analyzing trace with hash 2124182453, now seen corresponding path program 1 times [2024-11-07 23:37:19,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:37:19,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932724562] [2024-11-07 23:37:19,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:37:19,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:37:19,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:37:19,574 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 23:37:19,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:37:19,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932724562] [2024-11-07 23:37:19,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932724562] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:37:19,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742296250] [2024-11-07 23:37:19,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:37:19,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:37:19,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:37:19,578 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 23:37:19,580 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 23:37:19,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:37:19,692 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-07 23:37:19,695 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:37:19,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:37:19,740 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 23:37:19,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742296250] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:37:19,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 23:37:19,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-07 23:37:19,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240238002] [2024-11-07 23:37:19,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:37:19,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 23:37:19,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:37:19,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 23:37:19,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-07 23:37:19,757 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 169 [2024-11-07 23:37:19,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 166 transitions, 383 flow. Second operand has 6 states, 6 states have (on average 83.83333333333333) internal successors, (503), 6 states have internal predecessors, (503), 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 23:37:19,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:37:19,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 169 [2024-11-07 23:37:19,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:37:20,555 INFO L124 PetriNetUnfolderBase]: 2890/6515 cut-off events. [2024-11-07 23:37:20,557 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-11-07 23:37:20,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10750 conditions, 6515 events. 2890/6515 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 58786 event pairs, 1812 based on Foata normal form. 2/5186 useless extension candidates. Maximal degree in co-relation 10700. Up to 4172 conditions per place. [2024-11-07 23:37:20,602 INFO L140 encePairwiseOnDemand]: 160/169 looper letters, 72 selfloop transitions, 12 changer transitions 0/164 dead transitions. [2024-11-07 23:37:20,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 164 transitions, 543 flow [2024-11-07 23:37:20,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 23:37:20,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 23:37:20,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 584 transitions. [2024-11-07 23:37:20,607 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5759368836291914 [2024-11-07 23:37:20,608 INFO L175 Difference]: Start difference. First operand has 147 places, 166 transitions, 383 flow. Second operand 6 states and 584 transitions. [2024-11-07 23:37:20,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 164 transitions, 543 flow [2024-11-07 23:37:20,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 164 transitions, 543 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 23:37:20,615 INFO L231 Difference]: Finished difference. Result has 148 places, 164 transitions, 399 flow [2024-11-07 23:37:20,616 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=399, PETRI_PLACES=148, PETRI_TRANSITIONS=164} [2024-11-07 23:37:20,617 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 1 predicate places. [2024-11-07 23:37:20,617 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 164 transitions, 399 flow [2024-11-07 23:37:20,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.83333333333333) internal successors, (503), 6 states have internal predecessors, (503), 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 23:37:20,620 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:37:20,620 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-07 23:37:20,639 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 23:37:20,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:37:20,822 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-11-07 23:37:20,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:37:20,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1425148113, now seen corresponding path program 1 times [2024-11-07 23:37:20,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:37:20,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547228712] [2024-11-07 23:37:20,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:37:20,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:37:20,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:37:20,991 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:37:20,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:37:20,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547228712] [2024-11-07 23:37:20,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547228712] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:37:20,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947910352] [2024-11-07 23:37:20,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:37:20,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:37:20,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:37:20,995 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 23:37:20,996 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 23:37:21,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:37:21,090 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-07 23:37:21,091 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:37:21,115 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:37:21,115 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:37:21,154 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:37:21,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947910352] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:37:21,154 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:37:21,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-07 23:37:21,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824201963] [2024-11-07 23:37:21,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:37:21,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-07 23:37:21,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:37:21,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-07 23:37:21,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-07 23:37:21,183 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 169 [2024-11-07 23:37:21,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 164 transitions, 399 flow. Second operand has 12 states, 12 states have (on average 84.08333333333333) internal successors, (1009), 12 states have internal predecessors, (1009), 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 23:37:21,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:37:21,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 169 [2024-11-07 23:37:21,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:37:22,113 INFO L124 PetriNetUnfolderBase]: 2896/6539 cut-off events. [2024-11-07 23:37:22,114 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2024-11-07 23:37:22,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10844 conditions, 6539 events. 2896/6539 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 59093 event pairs, 1812 based on Foata normal form. 6/5213 useless extension candidates. Maximal degree in co-relation 10702. Up to 4183 conditions per place. [2024-11-07 23:37:22,171 INFO L140 encePairwiseOnDemand]: 160/169 looper letters, 77 selfloop transitions, 25 changer transitions 0/182 dead transitions. [2024-11-07 23:37:22,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 182 transitions, 717 flow [2024-11-07 23:37:22,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 23:37:22,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-07 23:37:22,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 938 transitions. [2024-11-07 23:37:22,175 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5550295857988166 [2024-11-07 23:37:22,175 INFO L175 Difference]: Start difference. First operand has 148 places, 164 transitions, 399 flow. Second operand 10 states and 938 transitions. [2024-11-07 23:37:22,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 182 transitions, 717 flow [2024-11-07 23:37:22,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 182 transitions, 659 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-07 23:37:22,180 INFO L231 Difference]: Finished difference. Result has 155 places, 182 transitions, 539 flow [2024-11-07 23:37:22,180 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=539, PETRI_PLACES=155, PETRI_TRANSITIONS=182} [2024-11-07 23:37:22,181 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 8 predicate places. [2024-11-07 23:37:22,181 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 182 transitions, 539 flow [2024-11-07 23:37:22,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 84.08333333333333) internal successors, (1009), 12 states have internal predecessors, (1009), 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 23:37:22,182 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:37:22,182 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:37:22,201 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 23:37:22,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:37:22,387 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-11-07 23:37:22,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:37:22,388 INFO L85 PathProgramCache]: Analyzing trace with hash 2088466662, now seen corresponding path program 1 times [2024-11-07 23:37:22,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:37:22,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820313115] [2024-11-07 23:37:22,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:37:22,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:37:22,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:37:22,560 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 23:37:22,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:37:22,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820313115] [2024-11-07 23:37:22,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820313115] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:37:22,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:37:22,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 23:37:22,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045514167] [2024-11-07 23:37:22,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:37:22,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 23:37:22,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:37:22,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 23:37:22,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 23:37:22,562 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 169 [2024-11-07 23:37:22,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 182 transitions, 539 flow. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 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 23:37:22,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:37:22,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 169 [2024-11-07 23:37:22,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:37:23,182 INFO L124 PetriNetUnfolderBase]: 2894/6537 cut-off events. [2024-11-07 23:37:23,182 INFO L125 PetriNetUnfolderBase]: For 89/89 co-relation queries the response was YES. [2024-11-07 23:37:23,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10849 conditions, 6537 events. 2894/6537 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 58947 event pairs, 1812 based on Foata normal form. 2/5209 useless extension candidates. Maximal degree in co-relation 10782. Up to 4192 conditions per place. [2024-11-07 23:37:23,219 INFO L140 encePairwiseOnDemand]: 164/169 looper letters, 91 selfloop transitions, 7 changer transitions 0/180 dead transitions. [2024-11-07 23:37:23,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 180 transitions, 725 flow [2024-11-07 23:37:23,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 23:37:23,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 23:37:23,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 343 transitions. [2024-11-07 23:37:23,221 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6765285996055227 [2024-11-07 23:37:23,221 INFO L175 Difference]: Start difference. First operand has 155 places, 182 transitions, 539 flow. Second operand 3 states and 343 transitions. [2024-11-07 23:37:23,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 180 transitions, 725 flow [2024-11-07 23:37:23,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 180 transitions, 695 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-11-07 23:37:23,229 INFO L231 Difference]: Finished difference. Result has 154 places, 180 transitions, 513 flow [2024-11-07 23:37:23,229 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=513, PETRI_PLACES=154, PETRI_TRANSITIONS=180} [2024-11-07 23:37:23,230 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 7 predicate places. [2024-11-07 23:37:23,232 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 180 transitions, 513 flow [2024-11-07 23:37:23,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 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 23:37:23,233 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:37:23,233 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-07 23:37:23,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 23:37:23,233 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-11-07 23:37:23,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:37:23,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1604617938, now seen corresponding path program 2 times [2024-11-07 23:37:23,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:37:23,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872441857] [2024-11-07 23:37:23,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:37:23,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:37:23,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:37:23,489 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 23:37:23,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:37:23,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872441857] [2024-11-07 23:37:23,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872441857] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:37:23,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595869911] [2024-11-07 23:37:23,489 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 23:37:23,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:37:23,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:37:23,492 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 23:37:23,495 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 23:37:23,603 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-07 23:37:23,603 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 23:37:23,606 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-07 23:37:23,607 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:37:23,645 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-07 23:37:23,645 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:37:23,688 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-07 23:37:23,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595869911] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:37:23,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:37:23,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 13 [2024-11-07 23:37:23,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673607050] [2024-11-07 23:37:23,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:37:23,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-07 23:37:23,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:37:23,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-07 23:37:23,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-07 23:37:23,724 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 169 [2024-11-07 23:37:23,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 180 transitions, 513 flow. Second operand has 15 states, 15 states have (on average 84.33333333333333) internal successors, (1265), 15 states have internal predecessors, (1265), 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 23:37:23,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:37:23,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 169 [2024-11-07 23:37:23,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:37:24,555 INFO L124 PetriNetUnfolderBase]: 2896/6539 cut-off events. [2024-11-07 23:37:24,556 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2024-11-07 23:37:24,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10844 conditions, 6539 events. 2896/6539 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 58917 event pairs, 1812 based on Foata normal form. 2/5211 useless extension candidates. Maximal degree in co-relation 10774. Up to 4175 conditions per place. [2024-11-07 23:37:24,596 INFO L140 encePairwiseOnDemand]: 160/169 looper letters, 69 selfloop transitions, 33 changer transitions 0/182 dead transitions. [2024-11-07 23:37:24,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 182 transitions, 721 flow [2024-11-07 23:37:24,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-07 23:37:24,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-07 23:37:24,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1183 transitions. [2024-11-07 23:37:24,601 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5384615384615384 [2024-11-07 23:37:24,601 INFO L175 Difference]: Start difference. First operand has 154 places, 180 transitions, 513 flow. Second operand 13 states and 1183 transitions. [2024-11-07 23:37:24,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 182 transitions, 721 flow [2024-11-07 23:37:24,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 182 transitions, 685 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-11-07 23:37:24,605 INFO L231 Difference]: Finished difference. Result has 158 places, 182 transitions, 547 flow [2024-11-07 23:37:24,606 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=547, PETRI_PLACES=158, PETRI_TRANSITIONS=182} [2024-11-07 23:37:24,606 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 11 predicate places. [2024-11-07 23:37:24,606 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 182 transitions, 547 flow [2024-11-07 23:37:24,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 84.33333333333333) internal successors, (1265), 15 states have internal predecessors, (1265), 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 23:37:24,607 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:37:24,608 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:37:24,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-07 23:37:24,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:37:24,809 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-11-07 23:37:24,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:37:24,809 INFO L85 PathProgramCache]: Analyzing trace with hash -115340577, now seen corresponding path program 1 times [2024-11-07 23:37:24,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:37:24,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499384109] [2024-11-07 23:37:24,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:37:24,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:37:24,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:37:24,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 23:37:24,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:37:24,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499384109] [2024-11-07 23:37:24,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499384109] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:37:24,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:37:24,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 23:37:24,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307305283] [2024-11-07 23:37:24,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:37:24,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 23:37:24,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:37:24,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 23:37:24,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 23:37:24,907 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 169 [2024-11-07 23:37:24,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 182 transitions, 547 flow. Second operand has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 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 23:37:24,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:37:24,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 169 [2024-11-07 23:37:24,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:37:25,785 INFO L124 PetriNetUnfolderBase]: 5153/10831 cut-off events. [2024-11-07 23:37:25,786 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2024-11-07 23:37:25,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18528 conditions, 10831 events. 5153/10831 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 95791 event pairs, 2276 based on Foata normal form. 112/9063 useless extension candidates. Maximal degree in co-relation 18362. Up to 4875 conditions per place. [2024-11-07 23:37:25,898 INFO L140 encePairwiseOnDemand]: 163/169 looper letters, 160 selfloop transitions, 2 changer transitions 0/238 dead transitions. [2024-11-07 23:37:25,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 238 transitions, 985 flow [2024-11-07 23:37:25,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 23:37:25,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 23:37:25,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 389 transitions. [2024-11-07 23:37:25,900 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7672583826429981 [2024-11-07 23:37:25,900 INFO L175 Difference]: Start difference. First operand has 158 places, 182 transitions, 547 flow. Second operand 3 states and 389 transitions. [2024-11-07 23:37:25,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 238 transitions, 985 flow [2024-11-07 23:37:25,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 238 transitions, 865 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-11-07 23:37:25,905 INFO L231 Difference]: Finished difference. Result has 149 places, 183 transitions, 445 flow [2024-11-07 23:37:25,906 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=445, PETRI_PLACES=149, PETRI_TRANSITIONS=183} [2024-11-07 23:37:25,908 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 2 predicate places. [2024-11-07 23:37:25,908 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 183 transitions, 445 flow [2024-11-07 23:37:25,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 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 23:37:25,909 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:37:25,909 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:37:25,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-07 23:37:25,909 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-11-07 23:37:25,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:37:25,909 INFO L85 PathProgramCache]: Analyzing trace with hash -116357444, now seen corresponding path program 1 times [2024-11-07 23:37:25,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:37:25,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260252381] [2024-11-07 23:37:25,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:37:25,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:37:25,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:37:25,994 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 23:37:25,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:37:25,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260252381] [2024-11-07 23:37:25,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260252381] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:37:25,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:37:25,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 23:37:25,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507883318] [2024-11-07 23:37:25,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:37:25,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:37:25,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:37:25,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:37:25,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:37:26,041 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 169 [2024-11-07 23:37:26,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 183 transitions, 445 flow. Second operand has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 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 23:37:26,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:37:26,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 169 [2024-11-07 23:37:26,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:37:27,011 INFO L124 PetriNetUnfolderBase]: 7104/14899 cut-off events. [2024-11-07 23:37:27,011 INFO L125 PetriNetUnfolderBase]: For 283/283 co-relation queries the response was YES. [2024-11-07 23:37:27,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25859 conditions, 14899 events. 7104/14899 cut-off events. For 283/283 co-relation queries the response was YES. Maximal size of possible extension queue 707. Compared 138212 event pairs, 2894 based on Foata normal form. 336/12491 useless extension candidates. Maximal degree in co-relation 9100. Up to 6606 conditions per place. [2024-11-07 23:37:27,108 INFO L140 encePairwiseOnDemand]: 153/169 looper letters, 181 selfloop transitions, 10 changer transitions 0/259 dead transitions. [2024-11-07 23:37:27,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 259 transitions, 981 flow [2024-11-07 23:37:27,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:37:27,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:37:27,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 470 transitions. [2024-11-07 23:37:27,110 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6952662721893491 [2024-11-07 23:37:27,110 INFO L175 Difference]: Start difference. First operand has 149 places, 183 transitions, 445 flow. Second operand 4 states and 470 transitions. [2024-11-07 23:37:27,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 259 transitions, 981 flow [2024-11-07 23:37:27,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 259 transitions, 979 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 23:37:27,116 INFO L231 Difference]: Finished difference. Result has 152 places, 187 transitions, 511 flow [2024-11-07 23:37:27,117 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=511, PETRI_PLACES=152, PETRI_TRANSITIONS=187} [2024-11-07 23:37:27,119 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 5 predicate places. [2024-11-07 23:37:27,119 INFO L471 AbstractCegarLoop]: Abstraction has has 152 places, 187 transitions, 511 flow [2024-11-07 23:37:27,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 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 23:37:27,120 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:37:27,121 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:37:27,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-07 23:37:27,121 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-11-07 23:37:27,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:37:27,122 INFO L85 PathProgramCache]: Analyzing trace with hash 687888212, now seen corresponding path program 1 times [2024-11-07 23:37:27,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:37:27,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359614522] [2024-11-07 23:37:27,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:37:27,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:37:27,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:37:27,271 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 23:37:27,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:37:27,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359614522] [2024-11-07 23:37:27,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359614522] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:37:27,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610158832] [2024-11-07 23:37:27,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:37:27,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:37:27,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:37:27,274 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 23:37:27,276 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 23:37:27,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:37:27,377 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-07 23:37:27,378 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:37:27,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 23:37:27,429 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:37:27,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 23:37:27,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610158832] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:37:27,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:37:27,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-07 23:37:27,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079003325] [2024-11-07 23:37:27,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:37:27,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 23:37:27,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:37:27,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 23:37:27,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-07 23:37:27,503 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 169 [2024-11-07 23:37:27,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 187 transitions, 511 flow. Second operand has 11 states, 11 states have (on average 84.72727272727273) internal successors, (932), 11 states have internal predecessors, (932), 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 23:37:27,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:37:27,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 169 [2024-11-07 23:37:27,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:37:28,503 INFO L124 PetriNetUnfolderBase]: 5449/12740 cut-off events. [2024-11-07 23:37:28,503 INFO L125 PetriNetUnfolderBase]: For 1936/2078 co-relation queries the response was YES. [2024-11-07 23:37:28,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22902 conditions, 12740 events. 5449/12740 cut-off events. For 1936/2078 co-relation queries the response was YES. Maximal size of possible extension queue 616. Compared 124951 event pairs, 3559 based on Foata normal form. 79/10767 useless extension candidates. Maximal degree in co-relation 15845. Up to 7903 conditions per place. [2024-11-07 23:37:28,577 INFO L140 encePairwiseOnDemand]: 162/169 looper letters, 79 selfloop transitions, 24 changer transitions 0/183 dead transitions. [2024-11-07 23:37:28,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 183 transitions, 703 flow [2024-11-07 23:37:28,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 23:37:28,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 23:37:28,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 671 transitions. [2024-11-07 23:37:28,580 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5672020287404903 [2024-11-07 23:37:28,580 INFO L175 Difference]: Start difference. First operand has 152 places, 187 transitions, 511 flow. Second operand 7 states and 671 transitions. [2024-11-07 23:37:28,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 183 transitions, 703 flow [2024-11-07 23:37:28,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 183 transitions, 703 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 23:37:28,607 INFO L231 Difference]: Finished difference. Result has 158 places, 183 transitions, 545 flow [2024-11-07 23:37:28,607 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=497, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=545, PETRI_PLACES=158, PETRI_TRANSITIONS=183} [2024-11-07 23:37:28,608 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 11 predicate places. [2024-11-07 23:37:28,608 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 183 transitions, 545 flow [2024-11-07 23:37:28,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 84.72727272727273) internal successors, (932), 11 states have internal predecessors, (932), 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 23:37:28,609 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:37:28,609 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:37:28,627 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-07 23:37:28,810 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,SelfDestructingSolverStorable7 [2024-11-07 23:37:28,810 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-11-07 23:37:28,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:37:28,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1947019892, now seen corresponding path program 2 times [2024-11-07 23:37:28,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:37:28,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860950833] [2024-11-07 23:37:28,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:37:28,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:37:28,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:37:29,082 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-07 23:37:29,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:37:29,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860950833] [2024-11-07 23:37:29,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860950833] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:37:29,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796379149] [2024-11-07 23:37:29,083 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 23:37:29,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:37:29,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:37:29,085 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 23:37:29,086 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 23:37:29,194 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-07 23:37:29,194 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 23:37:29,195 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-07 23:37:29,196 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:37:29,251 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-07 23:37:29,251 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 23:37:29,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796379149] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:37:29,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 23:37:29,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 10 [2024-11-07 23:37:29,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262271615] [2024-11-07 23:37:29,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:37:29,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:37:29,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:37:29,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:37:29,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-07 23:37:29,278 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 169 [2024-11-07 23:37:29,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 183 transitions, 545 flow. Second operand has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 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 23:37:29,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:37:29,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 169 [2024-11-07 23:37:29,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:37:30,104 INFO L124 PetriNetUnfolderBase]: 6295/14332 cut-off events. [2024-11-07 23:37:30,104 INFO L125 PetriNetUnfolderBase]: For 2288/2330 co-relation queries the response was YES. [2024-11-07 23:37:30,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26244 conditions, 14332 events. 6295/14332 cut-off events. For 2288/2330 co-relation queries the response was YES. Maximal size of possible extension queue 672. Compared 139767 event pairs, 3226 based on Foata normal form. 42/12086 useless extension candidates. Maximal degree in co-relation 26121. Up to 7093 conditions per place. [2024-11-07 23:37:30,181 INFO L140 encePairwiseOnDemand]: 162/169 looper letters, 136 selfloop transitions, 7 changer transitions 0/219 dead transitions. [2024-11-07 23:37:30,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 219 transitions, 906 flow [2024-11-07 23:37:30,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:37:30,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:37:30,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 441 transitions. [2024-11-07 23:37:30,183 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6523668639053254 [2024-11-07 23:37:30,183 INFO L175 Difference]: Start difference. First operand has 158 places, 183 transitions, 545 flow. Second operand 4 states and 441 transitions. [2024-11-07 23:37:30,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 219 transitions, 906 flow [2024-11-07 23:37:30,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 219 transitions, 858 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-07 23:37:30,216 INFO L231 Difference]: Finished difference. Result has 155 places, 183 transitions, 521 flow [2024-11-07 23:37:30,216 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=521, PETRI_PLACES=155, PETRI_TRANSITIONS=183} [2024-11-07 23:37:30,216 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 8 predicate places. [2024-11-07 23:37:30,216 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 183 transitions, 521 flow [2024-11-07 23:37:30,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 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 23:37:30,217 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:37:30,217 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:37:30,230 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 23:37:30,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:37:30,418 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-11-07 23:37:30,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:37:30,418 INFO L85 PathProgramCache]: Analyzing trace with hash 228044423, now seen corresponding path program 1 times [2024-11-07 23:37:30,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:37:30,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766207423] [2024-11-07 23:37:30,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:37:30,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:37:30,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:37:30,623 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-07 23:37:30,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:37:30,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766207423] [2024-11-07 23:37:30,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766207423] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:37:30,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486765692] [2024-11-07 23:37:30,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:37:30,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:37:30,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:37:30,626 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 23:37:30,628 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 23:37:30,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:37:30,750 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-07 23:37:30,751 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:37:30,890 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-07 23:37:30,890 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:37:31,014 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-07 23:37:31,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486765692] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:37:31,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:37:31,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2024-11-07 23:37:31,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712853064] [2024-11-07 23:37:31,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:37:31,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-07 23:37:31,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:37:31,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-07 23:37:31,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2024-11-07 23:37:31,062 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 169 [2024-11-07 23:37:31,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 183 transitions, 521 flow. Second operand has 23 states, 23 states have (on average 84.3913043478261) internal successors, (1941), 23 states have internal predecessors, (1941), 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 23:37:31,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:37:31,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 169 [2024-11-07 23:37:31,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:37:32,366 INFO L124 PetriNetUnfolderBase]: 5757/13572 cut-off events. [2024-11-07 23:37:32,367 INFO L125 PetriNetUnfolderBase]: For 3780/3922 co-relation queries the response was YES. [2024-11-07 23:37:32,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25075 conditions, 13572 events. 5757/13572 cut-off events. For 3780/3922 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 134823 event pairs, 3813 based on Foata normal form. 79/11429 useless extension candidates. Maximal degree in co-relation 18793. Up to 8381 conditions per place. [2024-11-07 23:37:32,465 INFO L140 encePairwiseOnDemand]: 162/169 looper letters, 78 selfloop transitions, 22 changer transitions 0/179 dead transitions. [2024-11-07 23:37:32,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 179 transitions, 707 flow [2024-11-07 23:37:32,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 23:37:32,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-07 23:37:32,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1011 transitions. [2024-11-07 23:37:32,470 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5438407746100054 [2024-11-07 23:37:32,470 INFO L175 Difference]: Start difference. First operand has 155 places, 183 transitions, 521 flow. Second operand 11 states and 1011 transitions. [2024-11-07 23:37:32,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 179 transitions, 707 flow [2024-11-07 23:37:32,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 179 transitions, 699 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 23:37:32,514 INFO L231 Difference]: Finished difference. Result has 163 places, 179 transitions, 543 flow [2024-11-07 23:37:32,514 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=543, PETRI_PLACES=163, PETRI_TRANSITIONS=179} [2024-11-07 23:37:32,515 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 16 predicate places. [2024-11-07 23:37:32,515 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 179 transitions, 543 flow [2024-11-07 23:37:32,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 84.3913043478261) internal successors, (1941), 23 states have internal predecessors, (1941), 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 23:37:32,516 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:37:32,516 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:37:32,530 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 23:37:32,717 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,SelfDestructingSolverStorable9 [2024-11-07 23:37:32,717 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-11-07 23:37:32,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:37:32,717 INFO L85 PathProgramCache]: Analyzing trace with hash -42703001, now seen corresponding path program 2 times [2024-11-07 23:37:32,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:37:32,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649393429] [2024-11-07 23:37:32,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:37:32,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:37:32,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:37:32,877 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-07 23:37:32,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:37:32,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649393429] [2024-11-07 23:37:32,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649393429] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:37:32,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:37:32,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 23:37:32,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124581976] [2024-11-07 23:37:32,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:37:32,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:37:32,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:37:32,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:37:32,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:37:32,914 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 169 [2024-11-07 23:37:32,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 179 transitions, 543 flow. Second operand has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 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 23:37:32,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:37:32,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 169 [2024-11-07 23:37:32,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:37:33,980 INFO L124 PetriNetUnfolderBase]: 6529/14592 cut-off events. [2024-11-07 23:37:33,980 INFO L125 PetriNetUnfolderBase]: For 4096/4138 co-relation queries the response was YES. [2024-11-07 23:37:34,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27597 conditions, 14592 events. 6529/14592 cut-off events. For 4096/4138 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 140627 event pairs, 3522 based on Foata normal form. 98/12314 useless extension candidates. Maximal degree in co-relation 27485. Up to 7689 conditions per place. [2024-11-07 23:37:34,057 INFO L140 encePairwiseOnDemand]: 163/169 looper letters, 134 selfloop transitions, 7 changer transitions 0/213 dead transitions. [2024-11-07 23:37:34,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 213 transitions, 892 flow [2024-11-07 23:37:34,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:37:34,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:37:34,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 432 transitions. [2024-11-07 23:37:34,059 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6390532544378699 [2024-11-07 23:37:34,059 INFO L175 Difference]: Start difference. First operand has 163 places, 179 transitions, 543 flow. Second operand 4 states and 432 transitions. [2024-11-07 23:37:34,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 213 transitions, 892 flow [2024-11-07 23:37:34,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 213 transitions, 848 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-11-07 23:37:34,100 INFO L231 Difference]: Finished difference. Result has 155 places, 178 transitions, 509 flow [2024-11-07 23:37:34,101 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=509, PETRI_PLACES=155, PETRI_TRANSITIONS=178} [2024-11-07 23:37:34,101 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 8 predicate places. [2024-11-07 23:37:34,101 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 178 transitions, 509 flow [2024-11-07 23:37:34,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 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 23:37:34,102 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:37:34,102 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:37:34,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-07 23:37:34,102 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-11-07 23:37:34,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:37:34,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1540450559, now seen corresponding path program 1 times [2024-11-07 23:37:34,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:37:34,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798073948] [2024-11-07 23:37:34,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:37:34,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:37:34,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:37:34,205 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-07 23:37:34,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:37:34,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798073948] [2024-11-07 23:37:34,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798073948] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:37:34,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:37:34,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 23:37:34,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32054462] [2024-11-07 23:37:34,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:37:34,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 23:37:34,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:37:34,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 23:37:34,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 23:37:34,216 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 169 [2024-11-07 23:37:34,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 178 transitions, 509 flow. Second operand has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 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 23:37:34,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:37:34,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 169 [2024-11-07 23:37:34,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:37:35,640 INFO L124 PetriNetUnfolderBase]: 9773/20944 cut-off events. [2024-11-07 23:37:35,640 INFO L125 PetriNetUnfolderBase]: For 6589/6906 co-relation queries the response was YES. [2024-11-07 23:37:35,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40029 conditions, 20944 events. 9773/20944 cut-off events. For 6589/6906 co-relation queries the response was YES. Maximal size of possible extension queue 731. Compared 201588 event pairs, 4417 based on Foata normal form. 417/18412 useless extension candidates. Maximal degree in co-relation 33359. Up to 9507 conditions per place. [2024-11-07 23:37:35,747 INFO L140 encePairwiseOnDemand]: 163/169 looper letters, 162 selfloop transitions, 2 changer transitions 0/238 dead transitions. [2024-11-07 23:37:35,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 238 transitions, 1020 flow [2024-11-07 23:37:35,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 23:37:35,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 23:37:35,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 387 transitions. [2024-11-07 23:37:35,749 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7633136094674556 [2024-11-07 23:37:35,749 INFO L175 Difference]: Start difference. First operand has 155 places, 178 transitions, 509 flow. Second operand 3 states and 387 transitions. [2024-11-07 23:37:35,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 238 transitions, 1020 flow [2024-11-07 23:37:35,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 238 transitions, 1000 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-07 23:37:35,797 INFO L231 Difference]: Finished difference. Result has 155 places, 179 transitions, 513 flow [2024-11-07 23:37:35,798 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=513, PETRI_PLACES=155, PETRI_TRANSITIONS=179} [2024-11-07 23:37:35,798 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 8 predicate places. [2024-11-07 23:37:35,798 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 179 transitions, 513 flow [2024-11-07 23:37:35,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 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 23:37:35,799 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:37:35,799 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:37:35,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-07 23:37:35,799 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-11-07 23:37:35,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:37:35,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1539433692, now seen corresponding path program 1 times [2024-11-07 23:37:35,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:37:35,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696713061] [2024-11-07 23:37:35,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:37:35,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:37:35,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:37:35,888 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-07 23:37:35,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:37:35,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696713061] [2024-11-07 23:37:35,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696713061] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:37:35,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:37:35,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 23:37:35,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052290008] [2024-11-07 23:37:35,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:37:35,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:37:35,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:37:35,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:37:35,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:37:35,935 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 169 [2024-11-07 23:37:35,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 179 transitions, 513 flow. Second operand has 4 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 23:37:35,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:37:35,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 169 [2024-11-07 23:37:35,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:37:37,630 INFO L124 PetriNetUnfolderBase]: 13708/28419 cut-off events. [2024-11-07 23:37:37,630 INFO L125 PetriNetUnfolderBase]: For 8373/8852 co-relation queries the response was YES. [2024-11-07 23:37:37,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55647 conditions, 28419 events. 13708/28419 cut-off events. For 8373/8852 co-relation queries the response was YES. Maximal size of possible extension queue 984. Compared 277769 event pairs, 6038 based on Foata normal form. 949/25515 useless extension candidates. Maximal degree in co-relation 40940. Up to 13076 conditions per place. [2024-11-07 23:37:37,786 INFO L140 encePairwiseOnDemand]: 153/169 looper letters, 189 selfloop transitions, 10 changer transitions 0/265 dead transitions. [2024-11-07 23:37:37,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 265 transitions, 1197 flow [2024-11-07 23:37:37,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:37:37,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:37:37,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 468 transitions. [2024-11-07 23:37:37,788 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6923076923076923 [2024-11-07 23:37:37,788 INFO L175 Difference]: Start difference. First operand has 155 places, 179 transitions, 513 flow. Second operand 4 states and 468 transitions. [2024-11-07 23:37:37,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 265 transitions, 1197 flow [2024-11-07 23:37:37,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 265 transitions, 1195 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 23:37:37,837 INFO L231 Difference]: Finished difference. Result has 158 places, 183 transitions, 579 flow [2024-11-07 23:37:37,838 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=579, PETRI_PLACES=158, PETRI_TRANSITIONS=183} [2024-11-07 23:37:37,838 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 11 predicate places. [2024-11-07 23:37:37,838 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 183 transitions, 579 flow [2024-11-07 23:37:37,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 23:37:37,839 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:37:37,839 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:37:37,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-07 23:37:37,839 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-11-07 23:37:37,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:37:37,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1131369033, now seen corresponding path program 1 times [2024-11-07 23:37:37,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:37:37,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317968809] [2024-11-07 23:37:37,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:37:37,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:37:37,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:37:37,996 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-07 23:37:37,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:37:37,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317968809] [2024-11-07 23:37:37,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317968809] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:37:37,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:37:37,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 23:37:37,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630922479] [2024-11-07 23:37:37,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:37:37,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:37:37,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:37:37,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:37:37,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:37:38,009 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 169 [2024-11-07 23:37:38,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 183 transitions, 579 flow. Second operand has 4 states, 4 states have (on average 86.5) internal successors, (346), 4 states have internal predecessors, (346), 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 23:37:38,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:37:38,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 169 [2024-11-07 23:37:38,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:37:39,733 INFO L124 PetriNetUnfolderBase]: 10460/21880 cut-off events. [2024-11-07 23:37:39,734 INFO L125 PetriNetUnfolderBase]: For 8596/9108 co-relation queries the response was YES. [2024-11-07 23:37:39,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45261 conditions, 21880 events. 10460/21880 cut-off events. For 8596/9108 co-relation queries the response was YES. Maximal size of possible extension queue 722. Compared 206757 event pairs, 5256 based on Foata normal form. 416/20502 useless extension candidates. Maximal degree in co-relation 34215. Up to 10878 conditions per place. [2024-11-07 23:37:39,875 INFO L140 encePairwiseOnDemand]: 164/169 looper letters, 228 selfloop transitions, 4 changer transitions 14/320 dead transitions. [2024-11-07 23:37:39,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 320 transitions, 1476 flow [2024-11-07 23:37:39,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 23:37:39,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 23:37:39,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 619 transitions. [2024-11-07 23:37:39,877 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7325443786982249 [2024-11-07 23:37:39,877 INFO L175 Difference]: Start difference. First operand has 158 places, 183 transitions, 579 flow. Second operand 5 states and 619 transitions. [2024-11-07 23:37:39,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 320 transitions, 1476 flow [2024-11-07 23:37:39,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 320 transitions, 1476 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 23:37:39,988 INFO L231 Difference]: Finished difference. Result has 165 places, 185 transitions, 604 flow [2024-11-07 23:37:39,988 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=604, PETRI_PLACES=165, PETRI_TRANSITIONS=185} [2024-11-07 23:37:39,989 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 18 predicate places. [2024-11-07 23:37:39,989 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 185 transitions, 604 flow [2024-11-07 23:37:39,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.5) internal successors, (346), 4 states have internal predecessors, (346), 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 23:37:39,989 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:37:39,989 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:37:39,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-07 23:37:39,990 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-11-07 23:37:39,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:37:39,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1093132317, now seen corresponding path program 1 times [2024-11-07 23:37:39,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:37:39,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444166628] [2024-11-07 23:37:39,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:37:39,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:37:40,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:37:40,138 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-07 23:37:40,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:37:40,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444166628] [2024-11-07 23:37:40,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444166628] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:37:40,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:37:40,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 23:37:40,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433608671] [2024-11-07 23:37:40,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:37:40,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:37:40,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:37:40,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:37:40,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:37:40,156 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 169 [2024-11-07 23:37:40,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 185 transitions, 604 flow. Second operand has 4 states, 4 states have (on average 85.25) internal successors, (341), 4 states have internal predecessors, (341), 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 23:37:40,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:37:40,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 169 [2024-11-07 23:37:40,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:37:42,241 INFO L124 PetriNetUnfolderBase]: 10820/22036 cut-off events. [2024-11-07 23:37:42,241 INFO L125 PetriNetUnfolderBase]: For 9952/10488 co-relation queries the response was YES. [2024-11-07 23:37:42,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47216 conditions, 22036 events. 10820/22036 cut-off events. For 9952/10488 co-relation queries the response was YES. Maximal size of possible extension queue 720. Compared 203810 event pairs, 6076 based on Foata normal form. 530/20968 useless extension candidates. Maximal degree in co-relation 36167. Up to 12402 conditions per place. [2024-11-07 23:37:42,353 INFO L140 encePairwiseOnDemand]: 164/169 looper letters, 202 selfloop transitions, 3 changer transitions 0/277 dead transitions. [2024-11-07 23:37:42,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 277 transitions, 1285 flow [2024-11-07 23:37:42,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:37:42,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:37:42,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 493 transitions. [2024-11-07 23:37:42,354 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7292899408284024 [2024-11-07 23:37:42,354 INFO L175 Difference]: Start difference. First operand has 165 places, 185 transitions, 604 flow. Second operand 4 states and 493 transitions. [2024-11-07 23:37:42,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 277 transitions, 1285 flow [2024-11-07 23:37:42,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 277 transitions, 1283 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 23:37:42,424 INFO L231 Difference]: Finished difference. Result has 169 places, 186 transitions, 620 flow [2024-11-07 23:37:42,424 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=620, PETRI_PLACES=169, PETRI_TRANSITIONS=186} [2024-11-07 23:37:42,425 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 22 predicate places. [2024-11-07 23:37:42,425 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 186 transitions, 620 flow [2024-11-07 23:37:42,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.25) internal successors, (341), 4 states have internal predecessors, (341), 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 23:37:42,425 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:37:42,425 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:37:42,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-07 23:37:42,425 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-11-07 23:37:42,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:37:42,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1323792355, now seen corresponding path program 1 times [2024-11-07 23:37:42,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:37:42,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835547196] [2024-11-07 23:37:42,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:37:42,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:37:42,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:37:42,560 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-07 23:37:42,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:37:42,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835547196] [2024-11-07 23:37:42,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835547196] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:37:42,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:37:42,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 23:37:42,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815309512] [2024-11-07 23:37:42,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:37:42,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 23:37:42,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:37:42,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 23:37:42,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-07 23:37:42,611 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 169 [2024-11-07 23:37:42,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 186 transitions, 620 flow. Second operand has 5 states, 5 states have (on average 80.0) internal successors, (400), 5 states have internal predecessors, (400), 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 23:37:42,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:37:42,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 169 [2024-11-07 23:37:42,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:37:44,476 INFO L124 PetriNetUnfolderBase]: 12403/24884 cut-off events. [2024-11-07 23:37:44,476 INFO L125 PetriNetUnfolderBase]: For 10225/10700 co-relation queries the response was YES. [2024-11-07 23:37:44,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54302 conditions, 24884 events. 12403/24884 cut-off events. For 10225/10700 co-relation queries the response was YES. Maximal size of possible extension queue 770. Compared 228228 event pairs, 5860 based on Foata normal form. 247/23230 useless extension candidates. Maximal degree in co-relation 38475. Up to 12224 conditions per place. [2024-11-07 23:37:44,615 INFO L140 encePairwiseOnDemand]: 158/169 looper letters, 187 selfloop transitions, 12 changer transitions 0/267 dead transitions. [2024-11-07 23:37:44,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 267 transitions, 1266 flow [2024-11-07 23:37:44,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 23:37:44,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 23:37:44,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 546 transitions. [2024-11-07 23:37:44,617 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6461538461538462 [2024-11-07 23:37:44,617 INFO L175 Difference]: Start difference. First operand has 169 places, 186 transitions, 620 flow. Second operand 5 states and 546 transitions. [2024-11-07 23:37:44,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 267 transitions, 1266 flow [2024-11-07 23:37:44,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 267 transitions, 1264 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 23:37:44,740 INFO L231 Difference]: Finished difference. Result has 173 places, 186 transitions, 664 flow [2024-11-07 23:37:44,740 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=664, PETRI_PLACES=173, PETRI_TRANSITIONS=186} [2024-11-07 23:37:44,741 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 26 predicate places. [2024-11-07 23:37:44,741 INFO L471 AbstractCegarLoop]: Abstraction has has 173 places, 186 transitions, 664 flow [2024-11-07 23:37:44,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.0) internal successors, (400), 5 states have internal predecessors, (400), 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 23:37:44,741 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:37:44,741 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:37:44,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-07 23:37:44,741 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-11-07 23:37:44,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:37:44,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1323791330, now seen corresponding path program 1 times [2024-11-07 23:37:44,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:37:44,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117917274] [2024-11-07 23:37:44,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:37:44,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:37:44,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:37:44,843 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-07 23:37:44,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:37:44,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117917274] [2024-11-07 23:37:44,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117917274] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:37:44,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:37:44,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 23:37:44,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914285485] [2024-11-07 23:37:44,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:37:44,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:37:44,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:37:44,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:37:44,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:37:44,891 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 169 [2024-11-07 23:37:44,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 186 transitions, 664 flow. Second operand has 4 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 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 23:37:44,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:37:44,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 169 [2024-11-07 23:37:44,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:37:47,153 INFO L124 PetriNetUnfolderBase]: 10854/23385 cut-off events. [2024-11-07 23:37:47,154 INFO L125 PetriNetUnfolderBase]: For 14497/14838 co-relation queries the response was YES. [2024-11-07 23:37:47,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52057 conditions, 23385 events. 10854/23385 cut-off events. For 14497/14838 co-relation queries the response was YES. Maximal size of possible extension queue 773. Compared 225912 event pairs, 5825 based on Foata normal form. 385/21945 useless extension candidates. Maximal degree in co-relation 38516. Up to 12180 conditions per place. [2024-11-07 23:37:47,284 INFO L140 encePairwiseOnDemand]: 159/169 looper letters, 189 selfloop transitions, 9 changer transitions 0/266 dead transitions. [2024-11-07 23:37:47,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 266 transitions, 1298 flow [2024-11-07 23:37:47,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:37:47,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:37:47,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 462 transitions. [2024-11-07 23:37:47,286 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6834319526627219 [2024-11-07 23:37:47,286 INFO L175 Difference]: Start difference. First operand has 173 places, 186 transitions, 664 flow. Second operand 4 states and 462 transitions. [2024-11-07 23:37:47,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 266 transitions, 1298 flow [2024-11-07 23:37:47,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 266 transitions, 1282 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-07 23:37:47,416 INFO L231 Difference]: Finished difference. Result has 173 places, 184 transitions, 654 flow [2024-11-07 23:37:47,416 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=636, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=654, PETRI_PLACES=173, PETRI_TRANSITIONS=184} [2024-11-07 23:37:47,417 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 26 predicate places. [2024-11-07 23:37:47,417 INFO L471 AbstractCegarLoop]: Abstraction has has 173 places, 184 transitions, 654 flow [2024-11-07 23:37:47,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 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 23:37:47,417 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:37:47,417 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:37:47,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-07 23:37:47,417 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-11-07 23:37:47,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:37:47,418 INFO L85 PathProgramCache]: Analyzing trace with hash 477805948, now seen corresponding path program 1 times [2024-11-07 23:37:47,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:37:47,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509438098] [2024-11-07 23:37:47,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:37:47,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:37:47,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:37:47,496 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-07 23:37:47,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:37:47,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509438098] [2024-11-07 23:37:47,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509438098] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:37:47,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:37:47,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 23:37:47,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098952103] [2024-11-07 23:37:47,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:37:47,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:37:47,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:37:47,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:37:47,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:37:47,534 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 169 [2024-11-07 23:37:47,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 184 transitions, 654 flow. Second operand has 4 states, 4 states have (on average 84.5) internal successors, (338), 4 states have internal predecessors, (338), 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 23:37:47,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:37:47,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 169 [2024-11-07 23:37:47,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:37:49,385 INFO L124 PetriNetUnfolderBase]: 10920/24469 cut-off events. [2024-11-07 23:37:49,386 INFO L125 PetriNetUnfolderBase]: For 15742/15983 co-relation queries the response was YES. [2024-11-07 23:37:49,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53665 conditions, 24469 events. 10920/24469 cut-off events. For 15742/15983 co-relation queries the response was YES. Maximal size of possible extension queue 800. Compared 245471 event pairs, 6100 based on Foata normal form. 195/22454 useless extension candidates. Maximal degree in co-relation 40858. Up to 12714 conditions per place. [2024-11-07 23:37:49,528 INFO L140 encePairwiseOnDemand]: 162/169 looper letters, 149 selfloop transitions, 7 changer transitions 0/228 dead transitions. [2024-11-07 23:37:49,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 228 transitions, 1172 flow [2024-11-07 23:37:49,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:37:49,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:37:49,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 440 transitions. [2024-11-07 23:37:49,530 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.650887573964497 [2024-11-07 23:37:49,530 INFO L175 Difference]: Start difference. First operand has 173 places, 184 transitions, 654 flow. Second operand 4 states and 440 transitions. [2024-11-07 23:37:49,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 228 transitions, 1172 flow [2024-11-07 23:37:49,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 228 transitions, 1148 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 23:37:49,834 INFO L231 Difference]: Finished difference. Result has 174 places, 184 transitions, 665 flow [2024-11-07 23:37:49,834 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=639, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=665, PETRI_PLACES=174, PETRI_TRANSITIONS=184} [2024-11-07 23:37:49,834 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 27 predicate places. [2024-11-07 23:37:49,834 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 184 transitions, 665 flow [2024-11-07 23:37:49,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.5) internal successors, (338), 4 states have internal predecessors, (338), 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 23:37:49,835 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:37:49,835 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:37:49,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-07 23:37:49,835 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-11-07 23:37:49,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:37:49,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1912111665, now seen corresponding path program 1 times [2024-11-07 23:37:49,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:37:49,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876554447] [2024-11-07 23:37:49,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:37:49,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:37:49,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:37:49,944 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-07 23:37:49,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:37:49,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876554447] [2024-11-07 23:37:49,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876554447] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:37:49,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:37:49,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 23:37:49,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809546470] [2024-11-07 23:37:49,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:37:49,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 23:37:49,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:37:49,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 23:37:49,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-07 23:37:50,009 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 169 [2024-11-07 23:37:50,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 184 transitions, 665 flow. Second operand has 6 states, 6 states have (on average 73.5) internal successors, (441), 6 states have internal predecessors, (441), 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 23:37:50,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:37:50,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 169 [2024-11-07 23:37:50,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:37:52,423 INFO L124 PetriNetUnfolderBase]: 13089/26010 cut-off events. [2024-11-07 23:37:52,423 INFO L125 PetriNetUnfolderBase]: For 18712/19201 co-relation queries the response was YES. [2024-11-07 23:37:52,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60362 conditions, 26010 events. 13089/26010 cut-off events. For 18712/19201 co-relation queries the response was YES. Maximal size of possible extension queue 783. Compared 237783 event pairs, 6724 based on Foata normal form. 573/24632 useless extension candidates. Maximal degree in co-relation 45118. Up to 13834 conditions per place. [2024-11-07 23:37:52,567 INFO L140 encePairwiseOnDemand]: 156/169 looper letters, 314 selfloop transitions, 13 changer transitions 0/391 dead transitions. [2024-11-07 23:37:52,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 391 transitions, 2045 flow [2024-11-07 23:37:52,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-07 23:37:52,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-07 23:37:52,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 835 transitions. [2024-11-07 23:37:52,570 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.617603550295858 [2024-11-07 23:37:52,570 INFO L175 Difference]: Start difference. First operand has 174 places, 184 transitions, 665 flow. Second operand 8 states and 835 transitions. [2024-11-07 23:37:52,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 391 transitions, 2045 flow [2024-11-07 23:37:52,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 391 transitions, 2012 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 23:37:52,783 INFO L231 Difference]: Finished difference. Result has 182 places, 186 transitions, 714 flow [2024-11-07 23:37:52,783 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=655, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=714, PETRI_PLACES=182, PETRI_TRANSITIONS=186} [2024-11-07 23:37:52,784 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 35 predicate places. [2024-11-07 23:37:52,784 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 186 transitions, 714 flow [2024-11-07 23:37:52,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.5) internal successors, (441), 6 states have internal predecessors, (441), 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 23:37:52,784 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:37:52,784 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:37:52,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-07 23:37:52,784 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-11-07 23:37:52,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:37:52,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1927052487, now seen corresponding path program 1 times [2024-11-07 23:37:52,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:37:52,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916216715] [2024-11-07 23:37:52,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:37:52,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:37:52,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:37:52,859 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-07 23:37:52,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:37:52,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916216715] [2024-11-07 23:37:52,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916216715] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:37:52,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:37:52,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 23:37:52,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725238541] [2024-11-07 23:37:52,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:37:52,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:37:52,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:37:52,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:37:52,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:37:52,886 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 169 [2024-11-07 23:37:52,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 186 transitions, 714 flow. Second operand has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 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 23:37:52,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:37:52,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 169 [2024-11-07 23:37:52,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:37:54,904 INFO L124 PetriNetUnfolderBase]: 11310/24706 cut-off events. [2024-11-07 23:37:54,904 INFO L125 PetriNetUnfolderBase]: For 26137/26723 co-relation queries the response was YES. [2024-11-07 23:37:55,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58268 conditions, 24706 events. 11310/24706 cut-off events. For 26137/26723 co-relation queries the response was YES. Maximal size of possible extension queue 795. Compared 243246 event pairs, 6670 based on Foata normal form. 541/23271 useless extension candidates. Maximal degree in co-relation 55018. Up to 13762 conditions per place. [2024-11-07 23:37:55,097 INFO L140 encePairwiseOnDemand]: 163/169 looper letters, 155 selfloop transitions, 7 changer transitions 0/230 dead transitions. [2024-11-07 23:37:55,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 230 transitions, 1259 flow [2024-11-07 23:37:55,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:37:55,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:37:55,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 431 transitions. [2024-11-07 23:37:55,099 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6375739644970414 [2024-11-07 23:37:55,099 INFO L175 Difference]: Start difference. First operand has 182 places, 186 transitions, 714 flow. Second operand 4 states and 431 transitions. [2024-11-07 23:37:55,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 230 transitions, 1259 flow [2024-11-07 23:37:55,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 230 transitions, 1240 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-07 23:37:55,387 INFO L231 Difference]: Finished difference. Result has 181 places, 185 transitions, 713 flow [2024-11-07 23:37:55,387 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=699, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=713, PETRI_PLACES=181, PETRI_TRANSITIONS=185} [2024-11-07 23:37:55,388 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 34 predicate places. [2024-11-07 23:37:55,388 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 185 transitions, 713 flow [2024-11-07 23:37:55,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 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 23:37:55,388 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:37:55,388 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:37:55,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-07 23:37:55,389 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-11-07 23:37:55,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:37:55,389 INFO L85 PathProgramCache]: Analyzing trace with hash 92837097, now seen corresponding path program 1 times [2024-11-07 23:37:55,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:37:55,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540857066] [2024-11-07 23:37:55,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:37:55,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:37:55,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:37:55,480 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-07 23:37:55,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:37:55,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540857066] [2024-11-07 23:37:55,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540857066] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:37:55,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:37:55,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 23:37:55,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529532211] [2024-11-07 23:37:55,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:37:55,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:37:55,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:37:55,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:37:55,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:37:55,529 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 169 [2024-11-07 23:37:55,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 185 transitions, 713 flow. Second operand has 4 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 23:37:55,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:37:55,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 169 [2024-11-07 23:37:55,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:37:57,827 INFO L124 PetriNetUnfolderBase]: 12176/25183 cut-off events. [2024-11-07 23:37:57,827 INFO L125 PetriNetUnfolderBase]: For 23795/24183 co-relation queries the response was YES. [2024-11-07 23:37:57,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60549 conditions, 25183 events. 12176/25183 cut-off events. For 23795/24183 co-relation queries the response was YES. Maximal size of possible extension queue 799. Compared 238058 event pairs, 6403 based on Foata normal form. 510/24031 useless extension candidates. Maximal degree in co-relation 57521. Up to 13342 conditions per place. [2024-11-07 23:37:58,025 INFO L140 encePairwiseOnDemand]: 159/169 looper letters, 190 selfloop transitions, 10 changer transitions 0/266 dead transitions. [2024-11-07 23:37:58,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 266 transitions, 1405 flow [2024-11-07 23:37:58,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:37:58,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:37:58,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 458 transitions. [2024-11-07 23:37:58,027 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6775147928994083 [2024-11-07 23:37:58,027 INFO L175 Difference]: Start difference. First operand has 181 places, 185 transitions, 713 flow. Second operand 4 states and 458 transitions. [2024-11-07 23:37:58,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 266 transitions, 1405 flow [2024-11-07 23:37:58,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 266 transitions, 1373 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-07 23:37:58,319 INFO L231 Difference]: Finished difference. Result has 179 places, 184 transitions, 721 flow [2024-11-07 23:37:58,319 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=721, PETRI_PLACES=179, PETRI_TRANSITIONS=184} [2024-11-07 23:37:58,319 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 32 predicate places. [2024-11-07 23:37:58,319 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 184 transitions, 721 flow [2024-11-07 23:37:58,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 23:37:58,320 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:37:58,320 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:37:58,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-07 23:37:58,320 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-11-07 23:37:58,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:37:58,320 INFO L85 PathProgramCache]: Analyzing trace with hash -198460225, now seen corresponding path program 1 times [2024-11-07 23:37:58,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:37:58,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423123249] [2024-11-07 23:37:58,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:37:58,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:37:58,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:37:58,408 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-07 23:37:58,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:37:58,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423123249] [2024-11-07 23:37:58,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423123249] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:37:58,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:37:58,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 23:37:58,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636325830] [2024-11-07 23:37:58,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:37:58,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:37:58,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:37:58,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:37:58,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:37:58,423 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 169 [2024-11-07 23:37:58,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 184 transitions, 721 flow. Second operand has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 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 23:37:58,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:37:58,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 169 [2024-11-07 23:37:58,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:38:00,523 INFO L124 PetriNetUnfolderBase]: 9724/20463 cut-off events. [2024-11-07 23:38:00,523 INFO L125 PetriNetUnfolderBase]: For 23436/24057 co-relation queries the response was YES. [2024-11-07 23:38:00,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48862 conditions, 20463 events. 9724/20463 cut-off events. For 23436/24057 co-relation queries the response was YES. Maximal size of possible extension queue 660. Compared 188303 event pairs, 5163 based on Foata normal form. 604/19605 useless extension candidates. Maximal degree in co-relation 46359. Up to 10520 conditions per place. [2024-11-07 23:38:00,667 INFO L140 encePairwiseOnDemand]: 164/169 looper letters, 243 selfloop transitions, 4 changer transitions 22/337 dead transitions. [2024-11-07 23:38:00,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 337 transitions, 2018 flow [2024-11-07 23:38:00,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 23:38:00,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 23:38:00,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 614 transitions. [2024-11-07 23:38:00,668 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7266272189349112 [2024-11-07 23:38:00,668 INFO L175 Difference]: Start difference. First operand has 179 places, 184 transitions, 721 flow. Second operand 5 states and 614 transitions. [2024-11-07 23:38:00,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 337 transitions, 2018 flow [2024-11-07 23:38:00,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 337 transitions, 1973 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-07 23:38:00,770 INFO L231 Difference]: Finished difference. Result has 184 places, 186 transitions, 734 flow [2024-11-07 23:38:00,770 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=709, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=734, PETRI_PLACES=184, PETRI_TRANSITIONS=186} [2024-11-07 23:38:00,771 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 37 predicate places. [2024-11-07 23:38:00,771 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 186 transitions, 734 flow [2024-11-07 23:38:00,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 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 23:38:00,771 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:38:00,771 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:38:00,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-07 23:38:00,771 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-11-07 23:38:00,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:38:00,771 INFO L85 PathProgramCache]: Analyzing trace with hash -160254261, now seen corresponding path program 1 times [2024-11-07 23:38:00,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:38:00,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750410320] [2024-11-07 23:38:00,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:38:00,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:38:00,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:38:00,857 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-07 23:38:00,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:38:00,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750410320] [2024-11-07 23:38:00,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750410320] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:38:00,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:38:00,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 23:38:00,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366035134] [2024-11-07 23:38:00,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:38:00,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:38:00,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:38:00,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:38:00,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:38:00,871 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 169 [2024-11-07 23:38:00,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 186 transitions, 734 flow. Second operand has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 23:38:00,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:38:00,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 169 [2024-11-07 23:38:00,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:38:02,920 INFO L124 PetriNetUnfolderBase]: 10058/20653 cut-off events. [2024-11-07 23:38:02,921 INFO L125 PetriNetUnfolderBase]: For 22743/23384 co-relation queries the response was YES. [2024-11-07 23:38:03,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50084 conditions, 20653 events. 10058/20653 cut-off events. For 22743/23384 co-relation queries the response was YES. Maximal size of possible extension queue 658. Compared 185915 event pairs, 5888 based on Foata normal form. 723/20102 useless extension candidates. Maximal degree in co-relation 47652. Up to 11850 conditions per place. [2024-11-07 23:38:03,113 INFO L140 encePairwiseOnDemand]: 164/169 looper letters, 220 selfloop transitions, 3 changer transitions 0/289 dead transitions. [2024-11-07 23:38:03,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 289 transitions, 1666 flow [2024-11-07 23:38:03,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:38:03,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:38:03,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 490 transitions. [2024-11-07 23:38:03,115 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7248520710059172 [2024-11-07 23:38:03,115 INFO L175 Difference]: Start difference. First operand has 184 places, 186 transitions, 734 flow. Second operand 4 states and 490 transitions. [2024-11-07 23:38:03,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 289 transitions, 1666 flow [2024-11-07 23:38:03,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 289 transitions, 1664 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 23:38:03,233 INFO L231 Difference]: Finished difference. Result has 188 places, 187 transitions, 750 flow [2024-11-07 23:38:03,233 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=750, PETRI_PLACES=188, PETRI_TRANSITIONS=187} [2024-11-07 23:38:03,233 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 41 predicate places. [2024-11-07 23:38:03,233 INFO L471 AbstractCegarLoop]: Abstraction has has 188 places, 187 transitions, 750 flow [2024-11-07 23:38:03,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 23:38:03,234 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:38:03,234 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:38:03,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-07 23:38:03,234 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-11-07 23:38:03,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:38:03,234 INFO L85 PathProgramCache]: Analyzing trace with hash -390913274, now seen corresponding path program 1 times [2024-11-07 23:38:03,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:38:03,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37314118] [2024-11-07 23:38:03,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:38:03,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:38:03,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:38:03,314 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-07 23:38:03,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:38:03,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37314118] [2024-11-07 23:38:03,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37314118] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:38:03,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:38:03,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 23:38:03,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432182504] [2024-11-07 23:38:03,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:38:03,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:38:03,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:38:03,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:38:03,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:38:03,358 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 169 [2024-11-07 23:38:03,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 187 transitions, 750 flow. Second operand has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 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 23:38:03,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:38:03,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 169 [2024-11-07 23:38:03,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:38:05,615 INFO L124 PetriNetUnfolderBase]: 10159/21384 cut-off events. [2024-11-07 23:38:05,615 INFO L125 PetriNetUnfolderBase]: For 24366/24886 co-relation queries the response was YES. [2024-11-07 23:38:05,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52357 conditions, 21384 events. 10159/21384 cut-off events. For 24366/24886 co-relation queries the response was YES. Maximal size of possible extension queue 667. Compared 196683 event pairs, 5796 based on Foata normal form. 620/20534 useless extension candidates. Maximal degree in co-relation 49700. Up to 11770 conditions per place. [2024-11-07 23:38:05,809 INFO L140 encePairwiseOnDemand]: 159/169 looper letters, 208 selfloop transitions, 9 changer transitions 0/279 dead transitions. [2024-11-07 23:38:05,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 279 transitions, 1640 flow [2024-11-07 23:38:05,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:38:05,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:38:05,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 460 transitions. [2024-11-07 23:38:05,810 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6804733727810651 [2024-11-07 23:38:05,810 INFO L175 Difference]: Start difference. First operand has 188 places, 187 transitions, 750 flow. Second operand 4 states and 460 transitions. [2024-11-07 23:38:05,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 279 transitions, 1640 flow [2024-11-07 23:38:05,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 279 transitions, 1632 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 23:38:05,938 INFO L231 Difference]: Finished difference. Result has 189 places, 185 transitions, 748 flow [2024-11-07 23:38:05,938 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=748, PETRI_PLACES=189, PETRI_TRANSITIONS=185} [2024-11-07 23:38:05,939 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 42 predicate places. [2024-11-07 23:38:05,939 INFO L471 AbstractCegarLoop]: Abstraction has has 189 places, 185 transitions, 748 flow [2024-11-07 23:38:05,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 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 23:38:05,939 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:38:05,939 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:38:05,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-07 23:38:05,939 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-11-07 23:38:05,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:38:05,939 INFO L85 PathProgramCache]: Analyzing trace with hash -390914299, now seen corresponding path program 1 times [2024-11-07 23:38:05,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:38:05,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866830602] [2024-11-07 23:38:05,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:38:05,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:38:05,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:38:06,043 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-07 23:38:06,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:38:06,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866830602] [2024-11-07 23:38:06,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866830602] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:38:06,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:38:06,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 23:38:06,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084207080] [2024-11-07 23:38:06,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:38:06,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 23:38:06,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:38:06,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 23:38:06,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-07 23:38:06,109 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 169 [2024-11-07 23:38:06,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 185 transitions, 748 flow. Second operand has 5 states, 5 states have (on average 80.4) internal successors, (402), 5 states have internal predecessors, (402), 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 23:38:06,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:38:06,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 169 [2024-11-07 23:38:06,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:38:08,373 INFO L124 PetriNetUnfolderBase]: 11495/22401 cut-off events. [2024-11-07 23:38:08,374 INFO L125 PetriNetUnfolderBase]: For 25371/26081 co-relation queries the response was YES. [2024-11-07 23:38:08,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56835 conditions, 22401 events. 11495/22401 cut-off events. For 25371/26081 co-relation queries the response was YES. Maximal size of possible extension queue 651. Compared 193094 event pairs, 5796 based on Foata normal form. 546/21791 useless extension candidates. Maximal degree in co-relation 54043. Up to 11769 conditions per place. [2024-11-07 23:38:08,616 INFO L140 encePairwiseOnDemand]: 158/169 looper letters, 206 selfloop transitions, 12 changer transitions 0/278 dead transitions. [2024-11-07 23:38:08,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 278 transitions, 1650 flow [2024-11-07 23:38:08,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 23:38:08,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 23:38:08,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 544 transitions. [2024-11-07 23:38:08,617 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6437869822485207 [2024-11-07 23:38:08,617 INFO L175 Difference]: Start difference. First operand has 189 places, 185 transitions, 748 flow. Second operand 5 states and 544 transitions. [2024-11-07 23:38:08,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 278 transitions, 1650 flow [2024-11-07 23:38:08,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 278 transitions, 1637 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 23:38:08,774 INFO L231 Difference]: Finished difference. Result has 192 places, 185 transitions, 781 flow [2024-11-07 23:38:08,774 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=733, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=781, PETRI_PLACES=192, PETRI_TRANSITIONS=185} [2024-11-07 23:38:08,775 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 45 predicate places. [2024-11-07 23:38:08,775 INFO L471 AbstractCegarLoop]: Abstraction has has 192 places, 185 transitions, 781 flow [2024-11-07 23:38:08,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.4) internal successors, (402), 5 states have internal predecessors, (402), 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 23:38:08,775 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:38:08,775 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:38:08,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-07 23:38:08,775 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-11-07 23:38:08,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:38:08,776 INFO L85 PathProgramCache]: Analyzing trace with hash 766560401, now seen corresponding path program 1 times [2024-11-07 23:38:08,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:38:08,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935228642] [2024-11-07 23:38:08,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:38:08,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:38:08,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:38:08,905 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-07 23:38:08,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:38:08,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935228642] [2024-11-07 23:38:08,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935228642] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:38:08,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:38:08,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 23:38:08,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106808344] [2024-11-07 23:38:08,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:38:08,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 23:38:08,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:38:08,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 23:38:08,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-07 23:38:08,960 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 169 [2024-11-07 23:38:08,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 185 transitions, 781 flow. Second operand has 6 states, 6 states have (on average 73.83333333333333) internal successors, (443), 6 states have internal predecessors, (443), 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 23:38:08,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:38:08,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 169 [2024-11-07 23:38:08,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:38:11,587 INFO L124 PetriNetUnfolderBase]: 11662/22380 cut-off events. [2024-11-07 23:38:11,587 INFO L125 PetriNetUnfolderBase]: For 30240/30962 co-relation queries the response was YES. [2024-11-07 23:38:11,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58902 conditions, 22380 events. 11662/22380 cut-off events. For 30240/30962 co-relation queries the response was YES. Maximal size of possible extension queue 654. Compared 190008 event pairs, 6231 based on Foata normal form. 857/22170 useless extension candidates. Maximal degree in co-relation 56048. Up to 12567 conditions per place. [2024-11-07 23:38:11,753 INFO L140 encePairwiseOnDemand]: 156/169 looper letters, 345 selfloop transitions, 13 changer transitions 0/417 dead transitions. [2024-11-07 23:38:11,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 417 transitions, 2663 flow [2024-11-07 23:38:11,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-07 23:38:11,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-07 23:38:11,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 830 transitions. [2024-11-07 23:38:11,754 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.613905325443787 [2024-11-07 23:38:11,754 INFO L175 Difference]: Start difference. First operand has 192 places, 185 transitions, 781 flow. Second operand 8 states and 830 transitions. [2024-11-07 23:38:11,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 417 transitions, 2663 flow [2024-11-07 23:38:11,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 417 transitions, 2653 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 23:38:11,919 INFO L231 Difference]: Finished difference. Result has 200 places, 187 transitions, 828 flow [2024-11-07 23:38:11,919 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=769, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=828, PETRI_PLACES=200, PETRI_TRANSITIONS=187} [2024-11-07 23:38:11,920 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 53 predicate places. [2024-11-07 23:38:11,920 INFO L471 AbstractCegarLoop]: Abstraction has has 200 places, 187 transitions, 828 flow [2024-11-07 23:38:11,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.83333333333333) internal successors, (443), 6 states have internal predecessors, (443), 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 23:38:11,920 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:38:11,920 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:38:11,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-07 23:38:11,920 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-11-07 23:38:11,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:38:11,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1059513647, now seen corresponding path program 1 times [2024-11-07 23:38:11,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:38:11,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326230042] [2024-11-07 23:38:11,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:38:11,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:38:11,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:38:11,990 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-07 23:38:11,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:38:11,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326230042] [2024-11-07 23:38:11,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326230042] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:38:11,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:38:11,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 23:38:11,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305394142] [2024-11-07 23:38:11,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:38:11,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:38:11,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:38:11,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:38:11,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:38:12,036 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 169 [2024-11-07 23:38:12,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 187 transitions, 828 flow. Second operand has 4 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 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 23:38:12,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:38:12,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 169 [2024-11-07 23:38:12,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand