./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c854bb4-a90f-4513-a238-2b9bcfb8d0ab/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c854bb4-a90f-4513-a238-2b9bcfb8d0ab/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c854bb4-a90f-4513-a238-2b9bcfb8d0ab/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c854bb4-a90f-4513-a238-2b9bcfb8d0ab/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c854bb4-a90f-4513-a238-2b9bcfb8d0ab/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c854bb4-a90f-4513-a238-2b9bcfb8d0ab/bin/uautomizer-verify-qhAvR1uOyd --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 39e987e3198040ef6af9e29359b0ab7bee89306d1945f6e4e7a9286ebbe2a705 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 15:19:03,041 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:19:03,098 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c854bb4-a90f-4513-a238-2b9bcfb8d0ab/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-13 15:19:03,103 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:19:03,103 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:19:03,126 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:19:03,127 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:19:03,127 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:19:03,127 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 15:19:03,127 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 15:19:03,128 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 15:19:03,128 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 15:19:03,128 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:19:03,128 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:19:03,128 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:19:03,129 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:19:03,129 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 15:19:03,129 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 15:19:03,129 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 15:19:03,129 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 15:19:03,129 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:19:03,129 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 15:19:03,130 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 15:19:03,130 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 15:19:03,130 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:19:03,130 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-13 15:19:03,130 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 15:19:03,130 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 15:19:03,130 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 15:19:03,131 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:19:03,131 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:19:03,131 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:19:03,131 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 15:19:03,131 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 15:19:03,131 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:19:03,132 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:19:03,132 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 15:19:03,132 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 15:19:03,132 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 15:19:03,132 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 15:19:03,132 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 15:19:03,132 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 15:19:03,133 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 15:19:03,133 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 15:19:03,133 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 -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c854bb4-a90f-4513-a238-2b9bcfb8d0ab/bin/uautomizer-verify-qhAvR1uOyd 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 -> 39e987e3198040ef6af9e29359b0ab7bee89306d1945f6e4e7a9286ebbe2a705 [2024-11-13 15:19:03,404 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:19:03,413 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:19:03,415 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:19:03,417 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:19:03,417 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:19:03,418 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c854bb4-a90f-4513-a238-2b9bcfb8d0ab/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c Unable to find full path for "g++" [2024-11-13 15:19:05,407 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:19:05,709 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:19:05,710 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c854bb4-a90f-4513-a238-2b9bcfb8d0ab/sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c [2024-11-13 15:19:05,717 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c854bb4-a90f-4513-a238-2b9bcfb8d0ab/bin/uautomizer-verify-qhAvR1uOyd/data/ab74953e5/1d969fa214ee470eb93f2a08b08d8752/FLAG76b0f4a0e [2024-11-13 15:19:05,731 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c854bb4-a90f-4513-a238-2b9bcfb8d0ab/bin/uautomizer-verify-qhAvR1uOyd/data/ab74953e5/1d969fa214ee470eb93f2a08b08d8752 [2024-11-13 15:19:05,734 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:19:05,736 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:19:05,737 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:19:05,738 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:19:05,742 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:19:05,743 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:19:05" (1/1) ... [2024-11-13 15:19:05,744 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d4e541c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:19:05, skipping insertion in model container [2024-11-13 15:19:05,745 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:19:05" (1/1) ... [2024-11-13 15:19:05,761 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:19:05,951 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:19:05,962 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 15:19:06,010 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:19:06,028 INFO L204 MainTranslator]: Completed translation [2024-11-13 15:19:06,029 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:19:06 WrapperNode [2024-11-13 15:19:06,029 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:19:06,031 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 15:19:06,032 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 15:19:06,033 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 15:19:06,040 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:19:06" (1/1) ... [2024-11-13 15:19:06,053 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:19:06" (1/1) ... [2024-11-13 15:19:06,078 INFO L138 Inliner]: procedures = 23, calls = 23, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 93 [2024-11-13 15:19:06,078 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 15:19:06,079 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 15:19:06,079 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 15:19:06,079 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 15:19:06,087 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:19:06" (1/1) ... [2024-11-13 15:19:06,087 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:19:06" (1/1) ... [2024-11-13 15:19:06,090 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:19:06" (1/1) ... [2024-11-13 15:19:06,106 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-13 15:19:06,107 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:19:06" (1/1) ... [2024-11-13 15:19:06,107 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:19:06" (1/1) ... [2024-11-13 15:19:06,115 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:19:06" (1/1) ... [2024-11-13 15:19:06,119 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:19:06" (1/1) ... [2024-11-13 15:19:06,123 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:19:06" (1/1) ... [2024-11-13 15:19:06,124 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:19:06" (1/1) ... [2024-11-13 15:19:06,129 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 15:19:06,130 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 15:19:06,131 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 15:19:06,131 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 15:19:06,133 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:19:06" (1/1) ... [2024-11-13 15:19:06,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:19:06,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c854bb4-a90f-4513-a238-2b9bcfb8d0ab/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:19:06,164 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c854bb4-a90f-4513-a238-2b9bcfb8d0ab/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 15:19:06,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c854bb4-a90f-4513-a238-2b9bcfb8d0ab/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 15:19:06,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 15:19:06,191 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-13 15:19:06,191 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-13 15:19:06,191 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-13 15:19:06,191 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-13 15:19:06,191 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-13 15:19:06,191 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-13 15:19:06,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 15:19:06,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 15:19:06,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 15:19:06,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 15:19:06,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 15:19:06,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 15:19:06,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 15:19:06,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 15:19:06,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 15:19:06,193 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 15:19:06,351 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 15:19:06,353 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 15:19:06,853 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 15:19:06,853 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 15:19:07,144 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 15:19:07,145 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-13 15:19:07,145 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:19:07 BoogieIcfgContainer [2024-11-13 15:19:07,145 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 15:19:07,147 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 15:19:07,148 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 15:19:07,153 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 15:19:07,153 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 03:19:05" (1/3) ... [2024-11-13 15:19:07,155 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df65b79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:19:07, skipping insertion in model container [2024-11-13 15:19:07,155 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:19:06" (2/3) ... [2024-11-13 15:19:07,155 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df65b79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:19:07, skipping insertion in model container [2024-11-13 15:19:07,156 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:19:07" (3/3) ... [2024-11-13 15:19:07,157 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-sorted.wvr.c [2024-11-13 15:19:07,174 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 15:19:07,176 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-sorted.wvr.c that has 4 procedures, 66 locations, 1 initial locations, 4 loop locations, and 18 error locations. [2024-11-13 15:19:07,177 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 15:19:07,288 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-13 15:19:07,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 74 transitions, 169 flow [2024-11-13 15:19:07,398 INFO L124 PetriNetUnfolderBase]: 9/71 cut-off events. [2024-11-13 15:19:07,400 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-13 15:19:07,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 71 events. 9/71 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 230 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2024-11-13 15:19:07,408 INFO L82 GeneralOperation]: Start removeDead. Operand has 75 places, 74 transitions, 169 flow [2024-11-13 15:19:07,413 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 69 transitions, 153 flow [2024-11-13 15:19:07,425 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:19:07,444 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;@28dcc659, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:19:07,448 INFO L334 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2024-11-13 15:19:07,452 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 15:19:07,454 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-13 15:19:07,454 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 15:19:07,455 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:19:07,455 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 15:19:07,456 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-13 15:19:07,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:19:07,463 INFO L85 PathProgramCache]: Analyzing trace with hash 480433, now seen corresponding path program 1 times [2024-11-13 15:19:07,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:19:07,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080889076] [2024-11-13 15:19:07,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:19:07,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:19:07,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:07,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:19:07,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:19:07,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080889076] [2024-11-13 15:19:07,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080889076] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:19:07,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:19:07,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:19:07,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899561046] [2024-11-13 15:19:07,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:19:07,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:19:07,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:19:07,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:19:07,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:19:07,823 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 74 [2024-11-13 15:19:07,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 69 transitions, 153 flow. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 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) [2024-11-13 15:19:07,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:19:07,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 74 [2024-11-13 15:19:07,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:19:08,726 INFO L124 PetriNetUnfolderBase]: 2068/4157 cut-off events. [2024-11-13 15:19:08,727 INFO L125 PetriNetUnfolderBase]: For 157/157 co-relation queries the response was YES. [2024-11-13 15:19:08,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7132 conditions, 4157 events. 2068/4157 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 32228 event pairs, 1447 based on Foata normal form. 205/3741 useless extension candidates. Maximal degree in co-relation 6725. Up to 2814 conditions per place. [2024-11-13 15:19:08,782 INFO L140 encePairwiseOnDemand]: 67/74 looper letters, 30 selfloop transitions, 4 changer transitions 0/66 dead transitions. [2024-11-13 15:19:08,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 66 transitions, 215 flow [2024-11-13 15:19:08,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:19:08,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 15:19:08,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 177 transitions. [2024-11-13 15:19:08,805 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.597972972972973 [2024-11-13 15:19:08,809 INFO L175 Difference]: Start difference. First operand has 70 places, 69 transitions, 153 flow. Second operand 4 states and 177 transitions. [2024-11-13 15:19:08,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 66 transitions, 215 flow [2024-11-13 15:19:08,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 66 transitions, 206 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-13 15:19:08,819 INFO L231 Difference]: Finished difference. Result has 67 places, 66 transitions, 146 flow [2024-11-13 15:19:08,822 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=146, PETRI_PLACES=67, PETRI_TRANSITIONS=66} [2024-11-13 15:19:08,826 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, -3 predicate places. [2024-11-13 15:19:08,827 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 66 transitions, 146 flow [2024-11-13 15:19:08,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 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) [2024-11-13 15:19:08,828 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:19:08,828 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-13 15:19:08,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 15:19:08,828 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-13 15:19:08,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:19:08,829 INFO L85 PathProgramCache]: Analyzing trace with hash 14893931, now seen corresponding path program 1 times [2024-11-13 15:19:08,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:19:08,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555161183] [2024-11-13 15:19:08,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:19:08,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:19:08,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:08,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:19:08,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:19:08,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555161183] [2024-11-13 15:19:08,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555161183] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:19:08,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:19:08,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:19:08,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300222110] [2024-11-13 15:19:08,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:19:08,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:19:08,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:19:08,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:19:08,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:19:08,976 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 74 [2024-11-13 15:19:08,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 66 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 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) [2024-11-13 15:19:08,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:19:08,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 74 [2024-11-13 15:19:08,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:19:09,662 INFO L124 PetriNetUnfolderBase]: 2069/4161 cut-off events. [2024-11-13 15:19:09,662 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2024-11-13 15:19:09,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7087 conditions, 4161 events. 2069/4161 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 32278 event pairs, 1447 based on Foata normal form. 1/3541 useless extension candidates. Maximal degree in co-relation 7059. Up to 2819 conditions per place. [2024-11-13 15:19:09,705 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 33 selfloop transitions, 4 changer transitions 0/69 dead transitions. [2024-11-13 15:19:09,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 69 transitions, 232 flow [2024-11-13 15:19:09,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:19:09,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 15:19:09,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 178 transitions. [2024-11-13 15:19:09,711 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6013513513513513 [2024-11-13 15:19:09,712 INFO L175 Difference]: Start difference. First operand has 67 places, 66 transitions, 146 flow. Second operand 4 states and 178 transitions. [2024-11-13 15:19:09,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 69 transitions, 232 flow [2024-11-13 15:19:09,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 69 transitions, 218 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-13 15:19:09,717 INFO L231 Difference]: Finished difference. Result has 69 places, 69 transitions, 165 flow [2024-11-13 15:19:09,718 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=165, PETRI_PLACES=69, PETRI_TRANSITIONS=69} [2024-11-13 15:19:09,718 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, -1 predicate places. [2024-11-13 15:19:09,718 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 69 transitions, 165 flow [2024-11-13 15:19:09,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 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) [2024-11-13 15:19:09,719 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:19:09,719 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-13 15:19:09,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 15:19:09,719 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-13 15:19:09,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:19:09,720 INFO L85 PathProgramCache]: Analyzing trace with hash 461827115, now seen corresponding path program 1 times [2024-11-13 15:19:09,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:19:09,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430400214] [2024-11-13 15:19:09,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:19:09,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:19:09,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:09,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:19:09,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:19:09,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430400214] [2024-11-13 15:19:09,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430400214] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:19:09,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:19:09,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:19:09,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310974791] [2024-11-13 15:19:09,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:19:09,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:19:09,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:19:09,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:19:09,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:19:09,852 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 74 [2024-11-13 15:19:09,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 69 transitions, 165 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2024-11-13 15:19:09,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:19:09,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 74 [2024-11-13 15:19:09,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:19:10,469 INFO L124 PetriNetUnfolderBase]: 2659/4928 cut-off events. [2024-11-13 15:19:10,469 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2024-11-13 15:19:10,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8680 conditions, 4928 events. 2659/4928 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 36678 event pairs, 1919 based on Foata normal form. 232/4669 useless extension candidates. Maximal degree in co-relation 8654. Up to 3622 conditions per place. [2024-11-13 15:19:10,509 INFO L140 encePairwiseOnDemand]: 71/74 looper letters, 36 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2024-11-13 15:19:10,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 67 transitions, 237 flow [2024-11-13 15:19:10,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:19:10,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 15:19:10,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 136 transitions. [2024-11-13 15:19:10,511 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6126126126126126 [2024-11-13 15:19:10,511 INFO L175 Difference]: Start difference. First operand has 69 places, 69 transitions, 165 flow. Second operand 3 states and 136 transitions. [2024-11-13 15:19:10,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 67 transitions, 237 flow [2024-11-13 15:19:10,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 67 transitions, 234 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 15:19:10,513 INFO L231 Difference]: Finished difference. Result has 68 places, 67 transitions, 162 flow [2024-11-13 15:19:10,513 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=68, PETRI_TRANSITIONS=67} [2024-11-13 15:19:10,514 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, -2 predicate places. [2024-11-13 15:19:10,514 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 67 transitions, 162 flow [2024-11-13 15:19:10,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2024-11-13 15:19:10,514 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:19:10,515 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-13 15:19:10,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 15:19:10,515 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-13 15:19:10,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:19:10,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1431739203, now seen corresponding path program 1 times [2024-11-13 15:19:10,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:19:10,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761802052] [2024-11-13 15:19:10,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:19:10,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:19:10,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:10,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:19:10,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:19:10,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761802052] [2024-11-13 15:19:10,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761802052] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:19:10,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:19:10,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 15:19:10,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851197230] [2024-11-13 15:19:10,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:19:10,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:19:10,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:19:10,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:19:10,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:19:10,617 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 74 [2024-11-13 15:19:10,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 67 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2024-11-13 15:19:10,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:19:10,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 74 [2024-11-13 15:19:10,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:19:11,019 INFO L124 PetriNetUnfolderBase]: 2069/3963 cut-off events. [2024-11-13 15:19:11,020 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-11-13 15:19:11,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6894 conditions, 3963 events. 2069/3963 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 29102 event pairs, 1447 based on Foata normal form. 203/3745 useless extension candidates. Maximal degree in co-relation 6868. Up to 2819 conditions per place. [2024-11-13 15:19:11,061 INFO L140 encePairwiseOnDemand]: 71/74 looper letters, 35 selfloop transitions, 1 changer transitions 0/65 dead transitions. [2024-11-13 15:19:11,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 65 transitions, 230 flow [2024-11-13 15:19:11,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:19:11,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 15:19:11,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 134 transitions. [2024-11-13 15:19:11,063 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6036036036036037 [2024-11-13 15:19:11,064 INFO L175 Difference]: Start difference. First operand has 68 places, 67 transitions, 162 flow. Second operand 3 states and 134 transitions. [2024-11-13 15:19:11,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 65 transitions, 230 flow [2024-11-13 15:19:11,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 65 transitions, 228 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 15:19:11,066 INFO L231 Difference]: Finished difference. Result has 67 places, 65 transitions, 158 flow [2024-11-13 15:19:11,066 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=67, PETRI_TRANSITIONS=65} [2024-11-13 15:19:11,067 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, -3 predicate places. [2024-11-13 15:19:11,067 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 65 transitions, 158 flow [2024-11-13 15:19:11,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2024-11-13 15:19:11,068 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:19:11,069 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-13 15:19:11,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 15:19:11,069 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-13 15:19:11,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:19:11,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1323971811, now seen corresponding path program 1 times [2024-11-13 15:19:11,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:19:11,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064778870] [2024-11-13 15:19:11,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:19:11,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:19:11,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:11,211 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:19:11,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:19:11,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064778870] [2024-11-13 15:19:11,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064778870] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:19:11,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423775078] [2024-11-13 15:19:11,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:19:11,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:19:11,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c854bb4-a90f-4513-a238-2b9bcfb8d0ab/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:19:11,214 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c854bb4-a90f-4513-a238-2b9bcfb8d0ab/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:19:11,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c854bb4-a90f-4513-a238-2b9bcfb8d0ab/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 15:19:11,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:11,306 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 15:19:11,310 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:19:11,352 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:19:11,353 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:19:11,419 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:19:11,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423775078] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:19:11,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:19:11,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-13 15:19:11,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823845798] [2024-11-13 15:19:11,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:19:11,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 15:19:11,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:19:11,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 15:19:11,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-13 15:19:11,440 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 74 [2024-11-13 15:19:11,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 65 transitions, 158 flow. Second operand has 10 states, 10 states have (on average 36.0) internal successors, (360), 10 states have internal predecessors, (360), 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) [2024-11-13 15:19:11,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:19:11,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 74 [2024-11-13 15:19:11,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:19:11,960 INFO L124 PetriNetUnfolderBase]: 2072/3975 cut-off events. [2024-11-13 15:19:11,960 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-11-13 15:19:11,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6929 conditions, 3975 events. 2072/3975 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 29185 event pairs, 1447 based on Foata normal form. 0/3549 useless extension candidates. Maximal degree in co-relation 6920. Up to 2822 conditions per place. [2024-11-13 15:19:11,987 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 33 selfloop transitions, 13 changer transitions 0/74 dead transitions. [2024-11-13 15:19:11,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 74 transitions, 289 flow [2024-11-13 15:19:11,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 15:19:11,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-13 15:19:11,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 399 transitions. [2024-11-13 15:19:11,989 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5391891891891892 [2024-11-13 15:19:11,989 INFO L175 Difference]: Start difference. First operand has 67 places, 65 transitions, 158 flow. Second operand 10 states and 399 transitions. [2024-11-13 15:19:11,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 74 transitions, 289 flow [2024-11-13 15:19:11,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 74 transitions, 288 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 15:19:11,995 INFO L231 Difference]: Finished difference. Result has 78 places, 74 transitions, 240 flow [2024-11-13 15:19:11,996 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=240, PETRI_PLACES=78, PETRI_TRANSITIONS=74} [2024-11-13 15:19:11,996 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 8 predicate places. [2024-11-13 15:19:11,996 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 74 transitions, 240 flow [2024-11-13 15:19:11,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 36.0) internal successors, (360), 10 states have internal predecessors, (360), 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) [2024-11-13 15:19:11,997 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:19:11,997 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:19:12,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c854bb4-a90f-4513-a238-2b9bcfb8d0ab/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-13 15:19:12,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c854bb4-a90f-4513-a238-2b9bcfb8d0ab/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:19:12,202 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-13 15:19:12,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:19:12,202 INFO L85 PathProgramCache]: Analyzing trace with hash -377095632, now seen corresponding path program 1 times [2024-11-13 15:19:12,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:19:12,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670394724] [2024-11-13 15:19:12,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:19:12,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:19:12,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:12,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:19:12,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:19:12,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670394724] [2024-11-13 15:19:12,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670394724] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:19:12,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:19:12,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:19:12,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681444102] [2024-11-13 15:19:12,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:19:12,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:19:12,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:19:12,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:19:12,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:19:12,311 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 74 [2024-11-13 15:19:12,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 74 transitions, 240 flow. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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) [2024-11-13 15:19:12,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:19:12,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 74 [2024-11-13 15:19:12,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:19:13,079 INFO L124 PetriNetUnfolderBase]: 4337/7683 cut-off events. [2024-11-13 15:19:13,080 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2024-11-13 15:19:13,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13781 conditions, 7683 events. 4337/7683 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 54793 event pairs, 1818 based on Foata normal form. 100/6893 useless extension candidates. Maximal degree in co-relation 13768. Up to 3988 conditions per place. [2024-11-13 15:19:13,139 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 69 selfloop transitions, 3 changer transitions 0/99 dead transitions. [2024-11-13 15:19:13,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 99 transitions, 437 flow [2024-11-13 15:19:13,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:19:13,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 15:19:13,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 167 transitions. [2024-11-13 15:19:13,141 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7522522522522522 [2024-11-13 15:19:13,141 INFO L175 Difference]: Start difference. First operand has 78 places, 74 transitions, 240 flow. Second operand 3 states and 167 transitions. [2024-11-13 15:19:13,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 99 transitions, 437 flow [2024-11-13 15:19:13,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 99 transitions, 407 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-11-13 15:19:13,146 INFO L231 Difference]: Finished difference. Result has 78 places, 76 transitions, 231 flow [2024-11-13 15:19:13,147 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=231, PETRI_PLACES=78, PETRI_TRANSITIONS=76} [2024-11-13 15:19:13,147 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 8 predicate places. [2024-11-13 15:19:13,147 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 76 transitions, 231 flow [2024-11-13 15:19:13,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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) [2024-11-13 15:19:13,148 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:19:13,148 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:19:13,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 15:19:13,148 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-13 15:19:13,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:19:13,149 INFO L85 PathProgramCache]: Analyzing trace with hash -529046582, now seen corresponding path program 1 times [2024-11-13 15:19:13,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:19:13,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328970439] [2024-11-13 15:19:13,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:19:13,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:19:13,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:13,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:19:13,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:19:13,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328970439] [2024-11-13 15:19:13,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328970439] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:19:13,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:19:13,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:19:13,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254349717] [2024-11-13 15:19:13,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:19:13,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:19:13,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:19:13,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:19:13,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:19:13,214 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 74 [2024-11-13 15:19:13,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 76 transitions, 231 flow. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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) [2024-11-13 15:19:13,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:19:13,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 74 [2024-11-13 15:19:13,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:19:14,458 INFO L124 PetriNetUnfolderBase]: 7522/12920 cut-off events. [2024-11-13 15:19:14,459 INFO L125 PetriNetUnfolderBase]: For 1486/1486 co-relation queries the response was YES. [2024-11-13 15:19:14,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24735 conditions, 12920 events. 7522/12920 cut-off events. For 1486/1486 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 99001 event pairs, 3309 based on Foata normal form. 199/11586 useless extension candidates. Maximal degree in co-relation 24722. Up to 6712 conditions per place. [2024-11-13 15:19:14,556 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 72 selfloop transitions, 3 changer transitions 0/102 dead transitions. [2024-11-13 15:19:14,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 102 transitions, 449 flow [2024-11-13 15:19:14,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:19:14,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 15:19:14,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 166 transitions. [2024-11-13 15:19:14,558 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7477477477477478 [2024-11-13 15:19:14,558 INFO L175 Difference]: Start difference. First operand has 78 places, 76 transitions, 231 flow. Second operand 3 states and 166 transitions. [2024-11-13 15:19:14,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 102 transitions, 449 flow [2024-11-13 15:19:14,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 102 transitions, 443 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 15:19:14,563 INFO L231 Difference]: Finished difference. Result has 80 places, 78 transitions, 249 flow [2024-11-13 15:19:14,564 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=249, PETRI_PLACES=80, PETRI_TRANSITIONS=78} [2024-11-13 15:19:14,564 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 10 predicate places. [2024-11-13 15:19:14,564 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 78 transitions, 249 flow [2024-11-13 15:19:14,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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) [2024-11-13 15:19:14,565 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:19:14,565 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:19:14,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 15:19:14,565 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-13 15:19:14,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:19:14,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1194936808, now seen corresponding path program 1 times [2024-11-13 15:19:14,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:19:14,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584604537] [2024-11-13 15:19:14,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:19:14,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:19:14,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:14,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:19:14,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:19:14,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584604537] [2024-11-13 15:19:14,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584604537] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:19:14,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:19:14,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:19:14,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804196634] [2024-11-13 15:19:14,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:19:14,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:19:14,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:19:14,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:19:14,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:19:14,659 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 74 [2024-11-13 15:19:14,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 78 transitions, 249 flow. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:19:14,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:19:14,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 74 [2024-11-13 15:19:14,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:19:16,093 INFO L124 PetriNetUnfolderBase]: 8759/14604 cut-off events. [2024-11-13 15:19:16,093 INFO L125 PetriNetUnfolderBase]: For 2817/2817 co-relation queries the response was YES. [2024-11-13 15:19:16,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29861 conditions, 14604 events. 8759/14604 cut-off events. For 2817/2817 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 106717 event pairs, 3872 based on Foata normal form. 388/14202 useless extension candidates. Maximal degree in co-relation 29847. Up to 8342 conditions per place. [2024-11-13 15:19:16,204 INFO L140 encePairwiseOnDemand]: 68/74 looper letters, 95 selfloop transitions, 4 changer transitions 0/124 dead transitions. [2024-11-13 15:19:16,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 124 transitions, 571 flow [2024-11-13 15:19:16,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:19:16,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 15:19:16,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 215 transitions. [2024-11-13 15:19:16,210 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7263513513513513 [2024-11-13 15:19:16,210 INFO L175 Difference]: Start difference. First operand has 80 places, 78 transitions, 249 flow. Second operand 4 states and 215 transitions. [2024-11-13 15:19:16,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 124 transitions, 571 flow [2024-11-13 15:19:16,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 124 transitions, 562 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 15:19:16,217 INFO L231 Difference]: Finished difference. Result has 84 places, 79 transitions, 267 flow [2024-11-13 15:19:16,218 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=267, PETRI_PLACES=84, PETRI_TRANSITIONS=79} [2024-11-13 15:19:16,218 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 14 predicate places. [2024-11-13 15:19:16,218 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 79 transitions, 267 flow [2024-11-13 15:19:16,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:19:16,219 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:19:16,219 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:19:16,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 15:19:16,219 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-13 15:19:16,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:19:16,220 INFO L85 PathProgramCache]: Analyzing trace with hash 779424668, now seen corresponding path program 1 times [2024-11-13 15:19:16,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:19:16,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488567109] [2024-11-13 15:19:16,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:19:16,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:19:16,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:16,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:19:16,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:19:16,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488567109] [2024-11-13 15:19:16,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488567109] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:19:16,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:19:16,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:19:16,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197020296] [2024-11-13 15:19:16,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:19:16,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:19:16,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:19:16,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:19:16,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:19:16,301 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 74 [2024-11-13 15:19:16,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 79 transitions, 267 flow. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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) [2024-11-13 15:19:16,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:19:16,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 74 [2024-11-13 15:19:16,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:19:17,555 INFO L124 PetriNetUnfolderBase]: 8455/13297 cut-off events. [2024-11-13 15:19:17,555 INFO L125 PetriNetUnfolderBase]: For 5948/5948 co-relation queries the response was YES. [2024-11-13 15:19:17,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30052 conditions, 13297 events. 8455/13297 cut-off events. For 5948/5948 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 92730 event pairs, 4239 based on Foata normal form. 398/13216 useless extension candidates. Maximal degree in co-relation 30036. Up to 8041 conditions per place. [2024-11-13 15:19:17,659 INFO L140 encePairwiseOnDemand]: 68/74 looper letters, 96 selfloop transitions, 4 changer transitions 0/125 dead transitions. [2024-11-13 15:19:17,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 125 transitions, 615 flow [2024-11-13 15:19:17,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:19:17,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 15:19:17,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 213 transitions. [2024-11-13 15:19:17,661 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7195945945945946 [2024-11-13 15:19:17,661 INFO L175 Difference]: Start difference. First operand has 84 places, 79 transitions, 267 flow. Second operand 4 states and 213 transitions. [2024-11-13 15:19:17,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 125 transitions, 615 flow [2024-11-13 15:19:17,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 125 transitions, 597 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 15:19:17,670 INFO L231 Difference]: Finished difference. Result has 87 places, 80 transitions, 282 flow [2024-11-13 15:19:17,671 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=282, PETRI_PLACES=87, PETRI_TRANSITIONS=80} [2024-11-13 15:19:17,671 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 17 predicate places. [2024-11-13 15:19:17,672 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 80 transitions, 282 flow [2024-11-13 15:19:17,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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) [2024-11-13 15:19:17,672 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:19:17,672 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:19:17,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 15:19:17,673 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-13 15:19:17,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:19:17,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1532932030, now seen corresponding path program 1 times [2024-11-13 15:19:17,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:19:17,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193607083] [2024-11-13 15:19:17,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:19:17,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:19:17,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:17,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:19:17,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:19:17,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193607083] [2024-11-13 15:19:17,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193607083] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:19:17,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:19:17,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:19:17,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472999486] [2024-11-13 15:19:17,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:19:17,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:19:17,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:19:17,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:19:17,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:19:17,769 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 74 [2024-11-13 15:19:17,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 80 transitions, 282 flow. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 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) [2024-11-13 15:19:17,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:19:17,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 74 [2024-11-13 15:19:17,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:19:19,593 INFO L124 PetriNetUnfolderBase]: 13052/21735 cut-off events. [2024-11-13 15:19:19,593 INFO L125 PetriNetUnfolderBase]: For 11493/11493 co-relation queries the response was YES. [2024-11-13 15:19:19,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49211 conditions, 21735 events. 13052/21735 cut-off events. For 11493/11493 co-relation queries the response was YES. Maximal size of possible extension queue 748. Compared 168198 event pairs, 5384 based on Foata normal form. 301/20523 useless extension candidates. Maximal degree in co-relation 49193. Up to 10492 conditions per place. [2024-11-13 15:19:19,740 INFO L140 encePairwiseOnDemand]: 68/74 looper letters, 74 selfloop transitions, 9 changer transitions 0/110 dead transitions. [2024-11-13 15:19:19,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 110 transitions, 554 flow [2024-11-13 15:19:19,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:19:19,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 15:19:19,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 200 transitions. [2024-11-13 15:19:19,741 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6756756756756757 [2024-11-13 15:19:19,741 INFO L175 Difference]: Start difference. First operand has 87 places, 80 transitions, 282 flow. Second operand 4 states and 200 transitions. [2024-11-13 15:19:19,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 110 transitions, 554 flow [2024-11-13 15:19:19,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 110 transitions, 542 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 15:19:19,768 INFO L231 Difference]: Finished difference. Result has 90 places, 83 transitions, 321 flow [2024-11-13 15:19:19,768 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=321, PETRI_PLACES=90, PETRI_TRANSITIONS=83} [2024-11-13 15:19:19,769 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 20 predicate places. [2024-11-13 15:19:19,769 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 83 transitions, 321 flow [2024-11-13 15:19:19,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 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) [2024-11-13 15:19:19,769 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:19:19,769 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:19:19,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 15:19:19,769 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-13 15:19:19,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:19:19,770 INFO L85 PathProgramCache]: Analyzing trace with hash 276252220, now seen corresponding path program 1 times [2024-11-13 15:19:19,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:19:19,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687683791] [2024-11-13 15:19:19,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:19:19,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:19:19,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:20,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:19:20,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:19:20,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687683791] [2024-11-13 15:19:20,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687683791] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:19:20,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:19:20,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:19:20,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740656779] [2024-11-13 15:19:20,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:19:20,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:19:20,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:19:20,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:19:20,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:19:20,056 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 74 [2024-11-13 15:19:20,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 83 transitions, 321 flow. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2024-11-13 15:19:20,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:19:20,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 74 [2024-11-13 15:19:20,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:19:21,797 INFO L124 PetriNetUnfolderBase]: 11346/19779 cut-off events. [2024-11-13 15:19:21,797 INFO L125 PetriNetUnfolderBase]: For 11319/11319 co-relation queries the response was YES. [2024-11-13 15:19:21,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46044 conditions, 19779 events. 11346/19779 cut-off events. For 11319/11319 co-relation queries the response was YES. Maximal size of possible extension queue 705. Compared 159135 event pairs, 7530 based on Foata normal form. 1/18734 useless extension candidates. Maximal degree in co-relation 46024. Up to 14572 conditions per place. [2024-11-13 15:19:21,888 INFO L140 encePairwiseOnDemand]: 71/74 looper letters, 50 selfloop transitions, 2 changer transitions 0/82 dead transitions. [2024-11-13 15:19:21,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 82 transitions, 417 flow [2024-11-13 15:19:21,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:19:21,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 15:19:21,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2024-11-13 15:19:21,890 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6621621621621622 [2024-11-13 15:19:21,890 INFO L175 Difference]: Start difference. First operand has 90 places, 83 transitions, 321 flow. Second operand 3 states and 147 transitions. [2024-11-13 15:19:21,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 82 transitions, 417 flow [2024-11-13 15:19:21,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 82 transitions, 413 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 15:19:21,906 INFO L231 Difference]: Finished difference. Result has 91 places, 82 transitions, 313 flow [2024-11-13 15:19:21,906 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=313, PETRI_PLACES=91, PETRI_TRANSITIONS=82} [2024-11-13 15:19:21,907 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 21 predicate places. [2024-11-13 15:19:21,907 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 82 transitions, 313 flow [2024-11-13 15:19:21,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2024-11-13 15:19:21,907 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:19:21,907 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-13 15:19:21,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 15:19:21,908 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-13 15:19:21,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:19:21,908 INFO L85 PathProgramCache]: Analyzing trace with hash -490250901, now seen corresponding path program 2 times [2024-11-13 15:19:21,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:19:21,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644807023] [2024-11-13 15:19:21,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:19:21,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:19:21,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:22,130 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:19:22,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:19:22,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644807023] [2024-11-13 15:19:22,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644807023] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:19:22,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618168553] [2024-11-13 15:19:22,131 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:19:22,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:19:22,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c854bb4-a90f-4513-a238-2b9bcfb8d0ab/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:19:22,135 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c854bb4-a90f-4513-a238-2b9bcfb8d0ab/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:19:22,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c854bb4-a90f-4513-a238-2b9bcfb8d0ab/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 15:19:22,217 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 15:19:22,218 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:19:22,219 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 15:19:22,220 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:19:22,285 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-13 15:19:22,285 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:19:22,338 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-13 15:19:22,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618168553] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:19:22,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:19:22,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-13 15:19:22,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424514486] [2024-11-13 15:19:22,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:19:22,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 15:19:22,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:19:22,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 15:19:22,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-13 15:19:22,361 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 74 [2024-11-13 15:19:22,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 82 transitions, 313 flow. Second operand has 14 states, 14 states have (on average 36.142857142857146) internal successors, (506), 14 states have internal predecessors, (506), 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) [2024-11-13 15:19:22,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:19:22,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 74 [2024-11-13 15:19:22,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:19:24,244 INFO L124 PetriNetUnfolderBase]: 11347/19782 cut-off events. [2024-11-13 15:19:24,245 INFO L125 PetriNetUnfolderBase]: For 11333/11333 co-relation queries the response was YES. [2024-11-13 15:19:24,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46054 conditions, 19782 events. 11347/19782 cut-off events. For 11333/11333 co-relation queries the response was YES. Maximal size of possible extension queue 705. Compared 159177 event pairs, 7530 based on Foata normal form. 2/18738 useless extension candidates. Maximal degree in co-relation 46033. Up to 14564 conditions per place. [2024-11-13 15:19:24,356 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 37 selfloop transitions, 18 changer transitions 0/84 dead transitions. [2024-11-13 15:19:24,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 84 transitions, 430 flow [2024-11-13 15:19:24,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 15:19:24,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-13 15:19:24,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 539 transitions. [2024-11-13 15:19:24,359 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5202702702702703 [2024-11-13 15:19:24,359 INFO L175 Difference]: Start difference. First operand has 91 places, 82 transitions, 313 flow. Second operand 14 states and 539 transitions. [2024-11-13 15:19:24,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 84 transitions, 430 flow [2024-11-13 15:19:24,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 84 transitions, 414 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-11-13 15:19:24,376 INFO L231 Difference]: Finished difference. Result has 97 places, 84 transitions, 340 flow [2024-11-13 15:19:24,376 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=340, PETRI_PLACES=97, PETRI_TRANSITIONS=84} [2024-11-13 15:19:24,377 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 27 predicate places. [2024-11-13 15:19:24,377 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 84 transitions, 340 flow [2024-11-13 15:19:24,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 36.142857142857146) internal successors, (506), 14 states have internal predecessors, (506), 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) [2024-11-13 15:19:24,378 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:19:24,378 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:19:24,394 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c854bb4-a90f-4513-a238-2b9bcfb8d0ab/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 15:19:24,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c854bb4-a90f-4513-a238-2b9bcfb8d0ab/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-13 15:19:24,578 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-13 15:19:24,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:19:24,579 INFO L85 PathProgramCache]: Analyzing trace with hash 391050539, now seen corresponding path program 1 times [2024-11-13 15:19:24,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:19:24,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775315904] [2024-11-13 15:19:24,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:19:24,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:19:24,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:24,701 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:19:24,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:19:24,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775315904] [2024-11-13 15:19:24,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775315904] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:19:24,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993357237] [2024-11-13 15:19:24,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:19:24,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:19:24,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c854bb4-a90f-4513-a238-2b9bcfb8d0ab/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:19:24,704 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c854bb4-a90f-4513-a238-2b9bcfb8d0ab/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:19:24,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c854bb4-a90f-4513-a238-2b9bcfb8d0ab/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 15:19:24,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:24,818 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 15:19:24,819 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:19:24,947 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:19:24,947 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:19:25,090 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:19:25,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993357237] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:19:25,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:19:25,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 15 [2024-11-13 15:19:25,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478215260] [2024-11-13 15:19:25,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:19:25,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-13 15:19:25,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:19:25,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-13 15:19:25,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-11-13 15:19:25,518 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 74 [2024-11-13 15:19:25,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 84 transitions, 340 flow. Second operand has 15 states, 15 states have (on average 29.466666666666665) internal successors, (442), 15 states have internal predecessors, (442), 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) [2024-11-13 15:19:25,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:19:25,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 74 [2024-11-13 15:19:25,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:19:30,336 INFO L124 PetriNetUnfolderBase]: 23860/36897 cut-off events. [2024-11-13 15:19:30,337 INFO L125 PetriNetUnfolderBase]: For 22286/22286 co-relation queries the response was YES. [2024-11-13 15:19:30,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89879 conditions, 36897 events. 23860/36897 cut-off events. For 22286/22286 co-relation queries the response was YES. Maximal size of possible extension queue 1090. Compared 275911 event pairs, 7066 based on Foata normal form. 598/36805 useless extension candidates. Maximal degree in co-relation 89862. Up to 11837 conditions per place. [2024-11-13 15:19:30,687 INFO L140 encePairwiseOnDemand]: 63/74 looper letters, 194 selfloop transitions, 22 changer transitions 0/241 dead transitions. [2024-11-13 15:19:30,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 241 transitions, 1336 flow [2024-11-13 15:19:30,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 15:19:30,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-13 15:19:30,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 498 transitions. [2024-11-13 15:19:30,690 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5608108108108109 [2024-11-13 15:19:30,690 INFO L175 Difference]: Start difference. First operand has 97 places, 84 transitions, 340 flow. Second operand 12 states and 498 transitions. [2024-11-13 15:19:30,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 241 transitions, 1336 flow [2024-11-13 15:19:30,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 241 transitions, 1276 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-11-13 15:19:30,771 INFO L231 Difference]: Finished difference. Result has 100 places, 89 transitions, 376 flow [2024-11-13 15:19:30,771 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=376, PETRI_PLACES=100, PETRI_TRANSITIONS=89} [2024-11-13 15:19:30,772 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 30 predicate places. [2024-11-13 15:19:30,772 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 89 transitions, 376 flow [2024-11-13 15:19:30,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 29.466666666666665) internal successors, (442), 15 states have internal predecessors, (442), 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) [2024-11-13 15:19:30,773 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:19:30,773 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:19:30,797 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c854bb4-a90f-4513-a238-2b9bcfb8d0ab/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 15:19:30,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c854bb4-a90f-4513-a238-2b9bcfb8d0ab/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-13 15:19:30,977 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-13 15:19:30,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:19:30,978 INFO L85 PathProgramCache]: Analyzing trace with hash 645448116, now seen corresponding path program 1 times [2024-11-13 15:19:30,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:19:30,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708092998] [2024-11-13 15:19:30,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:19:30,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:19:31,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:31,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:19:31,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:19:31,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708092998] [2024-11-13 15:19:31,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708092998] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:19:31,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:19:31,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:19:31,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248648830] [2024-11-13 15:19:31,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:19:31,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:19:31,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:19:31,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:19:31,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:19:31,114 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 74 [2024-11-13 15:19:31,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 89 transitions, 376 flow. Second operand has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 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) [2024-11-13 15:19:31,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:19:31,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 74 [2024-11-13 15:19:31,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:19:34,749 INFO L124 PetriNetUnfolderBase]: 22936/37148 cut-off events. [2024-11-13 15:19:34,749 INFO L125 PetriNetUnfolderBase]: For 37580/37580 co-relation queries the response was YES. [2024-11-13 15:19:34,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95132 conditions, 37148 events. 22936/37148 cut-off events. For 37580/37580 co-relation queries the response was YES. Maximal size of possible extension queue 1074. Compared 290529 event pairs, 2866 based on Foata normal form. 1584/38530 useless extension candidates. Maximal degree in co-relation 95114. Up to 16680 conditions per place. [2024-11-13 15:19:34,946 INFO L140 encePairwiseOnDemand]: 67/74 looper letters, 105 selfloop transitions, 11 changer transitions 0/141 dead transitions. [2024-11-13 15:19:34,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 141 transitions, 870 flow [2024-11-13 15:19:34,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:19:34,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 15:19:34,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 236 transitions. [2024-11-13 15:19:34,949 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6378378378378379 [2024-11-13 15:19:34,949 INFO L175 Difference]: Start difference. First operand has 100 places, 89 transitions, 376 flow. Second operand 5 states and 236 transitions. [2024-11-13 15:19:34,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 141 transitions, 870 flow [2024-11-13 15:19:35,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 141 transitions, 834 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-13 15:19:35,038 INFO L231 Difference]: Finished difference. Result has 96 places, 87 transitions, 370 flow [2024-11-13 15:19:35,039 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=370, PETRI_PLACES=96, PETRI_TRANSITIONS=87} [2024-11-13 15:19:35,039 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 26 predicate places. [2024-11-13 15:19:35,039 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 87 transitions, 370 flow [2024-11-13 15:19:35,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 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) [2024-11-13 15:19:35,040 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:19:35,040 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:19:35,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-13 15:19:35,040 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-13 15:19:35,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:19:35,041 INFO L85 PathProgramCache]: Analyzing trace with hash 645449141, now seen corresponding path program 1 times [2024-11-13 15:19:35,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:19:35,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186182048] [2024-11-13 15:19:35,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:19:35,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:19:35,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:35,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:19:35,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:19:35,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186182048] [2024-11-13 15:19:35,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186182048] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:19:35,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:19:35,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:19:35,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68715004] [2024-11-13 15:19:35,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:19:35,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:19:35,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:19:35,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:19:35,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:19:35,130 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 74 [2024-11-13 15:19:35,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 87 transitions, 370 flow. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:19:35,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:19:35,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 74 [2024-11-13 15:19:35,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:19:38,508 INFO L124 PetriNetUnfolderBase]: 20155/33087 cut-off events. [2024-11-13 15:19:38,509 INFO L125 PetriNetUnfolderBase]: For 36824/36824 co-relation queries the response was YES. [2024-11-13 15:19:38,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86847 conditions, 33087 events. 20155/33087 cut-off events. For 36824/36824 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 260452 event pairs, 6971 based on Foata normal form. 1056/32943 useless extension candidates. Maximal degree in co-relation 86829. Up to 13662 conditions per place. [2024-11-13 15:19:38,732 INFO L140 encePairwiseOnDemand]: 70/74 looper letters, 83 selfloop transitions, 4 changer transitions 0/112 dead transitions. [2024-11-13 15:19:38,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 112 transitions, 661 flow [2024-11-13 15:19:38,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:19:38,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 15:19:38,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 172 transitions. [2024-11-13 15:19:38,734 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.581081081081081 [2024-11-13 15:19:38,734 INFO L175 Difference]: Start difference. First operand has 96 places, 87 transitions, 370 flow. Second operand 4 states and 172 transitions. [2024-11-13 15:19:38,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 112 transitions, 661 flow [2024-11-13 15:19:38,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 112 transitions, 623 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-13 15:19:38,866 INFO L231 Difference]: Finished difference. Result has 92 places, 85 transitions, 330 flow [2024-11-13 15:19:38,866 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=330, PETRI_PLACES=92, PETRI_TRANSITIONS=85} [2024-11-13 15:19:38,867 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 22 predicate places. [2024-11-13 15:19:38,867 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 85 transitions, 330 flow [2024-11-13 15:19:38,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:19:38,867 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:19:38,867 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:19:38,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-13 15:19:38,868 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-13 15:19:38,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:19:38,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1465944311, now seen corresponding path program 1 times [2024-11-13 15:19:38,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:19:38,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599037854] [2024-11-13 15:19:38,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:19:38,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:19:38,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:39,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:19:39,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:19:39,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599037854] [2024-11-13 15:19:39,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599037854] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:19:39,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909284290] [2024-11-13 15:19:39,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:19:39,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:19:39,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c854bb4-a90f-4513-a238-2b9bcfb8d0ab/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:19:39,010 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c854bb4-a90f-4513-a238-2b9bcfb8d0ab/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:19:39,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c854bb4-a90f-4513-a238-2b9bcfb8d0ab/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 15:19:39,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:39,115 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 15:19:39,117 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:19:39,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:19:39,286 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:19:39,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:19:39,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909284290] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:19:39,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:19:39,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2024-11-13 15:19:39,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165792244] [2024-11-13 15:19:39,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:19:39,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 15:19:39,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:19:39,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 15:19:39,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2024-11-13 15:19:40,097 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 74 [2024-11-13 15:19:40,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 85 transitions, 330 flow. Second operand has 18 states, 18 states have (on average 28.055555555555557) internal successors, (505), 18 states have internal predecessors, (505), 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) [2024-11-13 15:19:40,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:19:40,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 74 [2024-11-13 15:19:40,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:19:43,548 INFO L124 PetriNetUnfolderBase]: 22835/35243 cut-off events. [2024-11-13 15:19:43,549 INFO L125 PetriNetUnfolderBase]: For 30104/30104 co-relation queries the response was YES. [2024-11-13 15:19:43,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91425 conditions, 35243 events. 22835/35243 cut-off events. For 30104/30104 co-relation queries the response was YES. Maximal size of possible extension queue 1010. Compared 257913 event pairs, 13919 based on Foata normal form. 76/34104 useless extension candidates. Maximal degree in co-relation 91407. Up to 25296 conditions per place. [2024-11-13 15:19:43,783 INFO L140 encePairwiseOnDemand]: 66/74 looper letters, 95 selfloop transitions, 18 changer transitions 9/146 dead transitions. [2024-11-13 15:19:43,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 146 transitions, 819 flow [2024-11-13 15:19:43,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 15:19:43,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-13 15:19:43,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 324 transitions. [2024-11-13 15:19:43,785 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-11-13 15:19:43,786 INFO L175 Difference]: Start difference. First operand has 92 places, 85 transitions, 330 flow. Second operand 9 states and 324 transitions. [2024-11-13 15:19:43,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 146 transitions, 819 flow [2024-11-13 15:19:43,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 146 transitions, 811 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-13 15:19:43,892 INFO L231 Difference]: Finished difference. Result has 100 places, 88 transitions, 392 flow [2024-11-13 15:19:43,892 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=392, PETRI_PLACES=100, PETRI_TRANSITIONS=88} [2024-11-13 15:19:43,893 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 30 predicate places. [2024-11-13 15:19:43,893 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 88 transitions, 392 flow [2024-11-13 15:19:43,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 28.055555555555557) internal successors, (505), 18 states have internal predecessors, (505), 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) [2024-11-13 15:19:43,893 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:19:43,894 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:19:43,910 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c854bb4-a90f-4513-a238-2b9bcfb8d0ab/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 15:19:44,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c854bb4-a90f-4513-a238-2b9bcfb8d0ab/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-13 15:19:44,097 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-13 15:19:44,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:19:44,098 INFO L85 PathProgramCache]: Analyzing trace with hash 555348021, now seen corresponding path program 1 times [2024-11-13 15:19:44,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:19:44,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207367818] [2024-11-13 15:19:44,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:19:44,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:19:44,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:44,233 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:19:44,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:19:44,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207367818] [2024-11-13 15:19:44,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207367818] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:19:44,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143214403] [2024-11-13 15:19:44,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:19:44,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:19:44,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c854bb4-a90f-4513-a238-2b9bcfb8d0ab/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:19:44,237 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c854bb4-a90f-4513-a238-2b9bcfb8d0ab/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:19:44,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c854bb4-a90f-4513-a238-2b9bcfb8d0ab/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 15:19:44,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:44,348 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 15:19:44,350 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:19:44,480 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:19:44,480 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:19:44,617 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:19:44,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143214403] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:19:44,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:19:44,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 14 [2024-11-13 15:19:44,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155325825] [2024-11-13 15:19:44,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:19:44,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 15:19:44,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:19:44,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 15:19:44,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-11-13 15:19:44,997 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 74 [2024-11-13 15:19:44,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 88 transitions, 392 flow. Second operand has 14 states, 14 states have (on average 28.142857142857142) internal successors, (394), 14 states have internal predecessors, (394), 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) [2024-11-13 15:19:44,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:19:44,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 74 [2024-11-13 15:19:44,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:19:51,168 INFO L124 PetriNetUnfolderBase]: 37488/58953 cut-off events. [2024-11-13 15:19:51,168 INFO L125 PetriNetUnfolderBase]: For 49526/49526 co-relation queries the response was YES. [2024-11-13 15:19:51,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151411 conditions, 58953 events. 37488/58953 cut-off events. For 49526/49526 co-relation queries the response was YES. Maximal size of possible extension queue 1464. Compared 461423 event pairs, 11179 based on Foata normal form. 470/57398 useless extension candidates. Maximal degree in co-relation 151390. Up to 19253 conditions per place. [2024-11-13 15:19:51,868 INFO L140 encePairwiseOnDemand]: 62/74 looper letters, 236 selfloop transitions, 23 changer transitions 13/293 dead transitions. [2024-11-13 15:19:51,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 293 transitions, 1839 flow [2024-11-13 15:19:51,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 15:19:51,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-13 15:19:51,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 538 transitions. [2024-11-13 15:19:51,871 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5592515592515592 [2024-11-13 15:19:51,871 INFO L175 Difference]: Start difference. First operand has 100 places, 88 transitions, 392 flow. Second operand 13 states and 538 transitions. [2024-11-13 15:19:51,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 293 transitions, 1839 flow [2024-11-13 15:19:52,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 293 transitions, 1824 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-13 15:19:52,005 INFO L231 Difference]: Finished difference. Result has 111 places, 87 transitions, 429 flow [2024-11-13 15:19:52,005 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=429, PETRI_PLACES=111, PETRI_TRANSITIONS=87} [2024-11-13 15:19:52,005 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 41 predicate places. [2024-11-13 15:19:52,005 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 87 transitions, 429 flow [2024-11-13 15:19:52,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 28.142857142857142) internal successors, (394), 14 states have internal predecessors, (394), 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) [2024-11-13 15:19:52,006 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:19:52,006 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:19:52,022 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c854bb4-a90f-4513-a238-2b9bcfb8d0ab/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 15:19:52,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c854bb4-a90f-4513-a238-2b9bcfb8d0ab/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-13 15:19:52,206 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-13 15:19:52,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:19:52,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1576634751, now seen corresponding path program 2 times [2024-11-13 15:19:52,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:19:52,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567254016] [2024-11-13 15:19:52,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:19:52,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:19:52,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:52,423 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:19:52,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:19:52,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567254016] [2024-11-13 15:19:52,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567254016] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:19:52,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989615254] [2024-11-13 15:19:52,424 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:19:52,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:19:52,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c854bb4-a90f-4513-a238-2b9bcfb8d0ab/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:19:52,426 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c854bb4-a90f-4513-a238-2b9bcfb8d0ab/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:19:52,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c854bb4-a90f-4513-a238-2b9bcfb8d0ab/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 15:19:52,522 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 15:19:52,522 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:19:52,523 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 15:19:52,525 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:19:52,612 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 15:19:52,612 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:19:52,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989615254] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:19:52,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:19:52,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 11 [2024-11-13 15:19:52,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069527213] [2024-11-13 15:19:52,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:19:52,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:19:52,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:19:52,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:19:52,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-13 15:19:52,657 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 74 [2024-11-13 15:19:52,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 87 transitions, 429 flow. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:19:52,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:19:52,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 74 [2024-11-13 15:19:52,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:19:56,980 INFO L124 PetriNetUnfolderBase]: 27648/43780 cut-off events. [2024-11-13 15:19:56,980 INFO L125 PetriNetUnfolderBase]: For 56694/56694 co-relation queries the response was YES. [2024-11-13 15:19:57,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121604 conditions, 43780 events. 27648/43780 cut-off events. For 56694/56694 co-relation queries the response was YES. Maximal size of possible extension queue 1217. Compared 342176 event pairs, 10027 based on Foata normal form. 1376/43985 useless extension candidates. Maximal degree in co-relation 121579. Up to 18690 conditions per place. [2024-11-13 15:19:57,300 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 105 selfloop transitions, 5 changer transitions 3/140 dead transitions. [2024-11-13 15:19:57,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 140 transitions, 945 flow [2024-11-13 15:19:57,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:19:57,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 15:19:57,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 209 transitions. [2024-11-13 15:19:57,302 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5648648648648649 [2024-11-13 15:19:57,302 INFO L175 Difference]: Start difference. First operand has 111 places, 87 transitions, 429 flow. Second operand 5 states and 209 transitions. [2024-11-13 15:19:57,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 140 transitions, 945 flow [2024-11-13 15:19:57,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 140 transitions, 843 flow, removed 14 selfloop flow, removed 14 redundant places. [2024-11-13 15:19:57,559 INFO L231 Difference]: Finished difference. Result has 96 places, 85 transitions, 366 flow [2024-11-13 15:19:57,559 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=366, PETRI_PLACES=96, PETRI_TRANSITIONS=85} [2024-11-13 15:19:57,560 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 26 predicate places. [2024-11-13 15:19:57,560 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 85 transitions, 366 flow [2024-11-13 15:19:57,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:19:57,560 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:19:57,560 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:19:57,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c854bb4-a90f-4513-a238-2b9bcfb8d0ab/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-13 15:19:57,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c854bb4-a90f-4513-a238-2b9bcfb8d0ab/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-13 15:19:57,760 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-13 15:19:57,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:19:57,761 INFO L85 PathProgramCache]: Analyzing trace with hash -873026093, now seen corresponding path program 1 times [2024-11-13 15:19:57,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:19:57,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534718605] [2024-11-13 15:19:57,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:19:57,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:19:57,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:57,870 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 15:19:57,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:19:57,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534718605] [2024-11-13 15:19:57,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534718605] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:19:57,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559970989] [2024-11-13 15:19:57,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:19:57,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:19:57,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c854bb4-a90f-4513-a238-2b9bcfb8d0ab/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:19:57,874 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c854bb4-a90f-4513-a238-2b9bcfb8d0ab/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:19:57,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c854bb4-a90f-4513-a238-2b9bcfb8d0ab/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 15:19:57,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:57,983 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-13 15:19:57,985 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:19:58,258 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:19:58,258 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:19:58,498 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:19:58,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559970989] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:19:58,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:19:58,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10, 10] total 24 [2024-11-13 15:19:58,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451372190] [2024-11-13 15:19:58,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:19:58,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-13 15:19:58,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:19:58,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-13 15:19:58,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2024-11-13 15:19:59,187 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 74 [2024-11-13 15:19:59,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 85 transitions, 366 flow. Second operand has 24 states, 24 states have (on average 28.833333333333332) internal successors, (692), 24 states have internal predecessors, (692), 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) [2024-11-13 15:19:59,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:19:59,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 74 [2024-11-13 15:19:59,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:20:05,846 INFO L124 PetriNetUnfolderBase]: 39161/59725 cut-off events. [2024-11-13 15:20:05,847 INFO L125 PetriNetUnfolderBase]: For 57465/57465 co-relation queries the response was YES. [2024-11-13 15:20:05,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161726 conditions, 59725 events. 39161/59725 cut-off events. For 57465/57465 co-relation queries the response was YES. Maximal size of possible extension queue 1599. Compared 467187 event pairs, 4358 based on Foata normal form. 1968/60992 useless extension candidates. Maximal degree in co-relation 161706. Up to 15338 conditions per place. [2024-11-13 15:20:06,167 INFO L140 encePairwiseOnDemand]: 63/74 looper letters, 252 selfloop transitions, 27 changer transitions 20/322 dead transitions. [2024-11-13 15:20:06,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 322 transitions, 1944 flow [2024-11-13 15:20:06,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-13 15:20:06,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-13 15:20:06,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 682 transitions. [2024-11-13 15:20:06,170 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5421303656597775 [2024-11-13 15:20:06,170 INFO L175 Difference]: Start difference. First operand has 96 places, 85 transitions, 366 flow. Second operand 17 states and 682 transitions. [2024-11-13 15:20:06,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 322 transitions, 1944 flow [2024-11-13 15:20:06,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 322 transitions, 1862 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-13 15:20:06,669 INFO L231 Difference]: Finished difference. Result has 106 places, 88 transitions, 438 flow [2024-11-13 15:20:06,669 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=438, PETRI_PLACES=106, PETRI_TRANSITIONS=88} [2024-11-13 15:20:06,669 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 36 predicate places. [2024-11-13 15:20:06,670 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 88 transitions, 438 flow [2024-11-13 15:20:06,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 28.833333333333332) internal successors, (692), 24 states have internal predecessors, (692), 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) [2024-11-13 15:20:06,670 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:20:06,671 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:20:06,693 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c854bb4-a90f-4513-a238-2b9bcfb8d0ab/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 15:20:06,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c854bb4-a90f-4513-a238-2b9bcfb8d0ab/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:20:06,871 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-13 15:20:06,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:20:06,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1036588539, now seen corresponding path program 1 times [2024-11-13 15:20:06,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:20:06,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525816386] [2024-11-13 15:20:06,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:20:06,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:20:06,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:20:07,036 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 15:20:07,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:20:07,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525816386] [2024-11-13 15:20:07,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525816386] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:20:07,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724825383] [2024-11-13 15:20:07,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:20:07,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:20:07,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c854bb4-a90f-4513-a238-2b9bcfb8d0ab/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:20:07,039 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c854bb4-a90f-4513-a238-2b9bcfb8d0ab/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:20:07,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c854bb4-a90f-4513-a238-2b9bcfb8d0ab/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 15:20:07,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:20:07,147 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-13 15:20:07,148 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:20:07,357 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:20:07,357 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:20:07,592 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:20:07,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724825383] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:20:07,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:20:07,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10, 10] total 23 [2024-11-13 15:20:07,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778874669] [2024-11-13 15:20:07,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:20:07,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-13 15:20:07,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:20:07,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-13 15:20:07,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2024-11-13 15:20:08,064 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 74 [2024-11-13 15:20:08,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 88 transitions, 438 flow. Second operand has 23 states, 23 states have (on average 27.608695652173914) internal successors, (635), 23 states have internal predecessors, (635), 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) [2024-11-13 15:20:08,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:20:08,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 74 [2024-11-13 15:20:08,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand