./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-counter-fun.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_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/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_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/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_48c8fefe-d2ae-4544-960f-f04b8300c433/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 fbe9f324c9eba6beb8c990e3f85f0b00a68548fe05ffdb4e97bc061354d1cdf2 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 12:44:07,525 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 12:44:07,628 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-13 12:44:07,637 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 12:44:07,637 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 12:44:07,670 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 12:44:07,672 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 12:44:07,673 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 12:44:07,674 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 12:44:07,674 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 12:44:07,675 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 12:44:07,675 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 12:44:07,676 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 12:44:07,676 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 12:44:07,676 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 12:44:07,676 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 12:44:07,676 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 12:44:07,676 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 12:44:07,676 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 12:44:07,677 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 12:44:07,677 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 12:44:07,677 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 12:44:07,677 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 12:44:07,677 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 12:44:07,678 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 12:44:07,678 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-13 12:44:07,678 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 12:44:07,678 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 12:44:07,678 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 12:44:07,678 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 12:44:07,678 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 12:44:07,678 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 12:44:07,679 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 12:44:07,679 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 12:44:07,679 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 12:44:07,679 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 12:44:07,680 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 12:44:07,680 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 12:44:07,680 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 12:44:07,680 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 12:44:07,681 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 12:44:07,681 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 12:44:07,681 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 12:44:07,681 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 12:44:07,681 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_48c8fefe-d2ae-4544-960f-f04b8300c433/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 -> fbe9f324c9eba6beb8c990e3f85f0b00a68548fe05ffdb4e97bc061354d1cdf2 [2024-11-13 12:44:08,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 12:44:08,021 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 12:44:08,025 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 12:44:08,027 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 12:44:08,027 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 12:44:08,029 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c Unable to find full path for "g++" [2024-11-13 12:44:09,928 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 12:44:10,299 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 12:44:10,300 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c [2024-11-13 12:44:10,319 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/data/783d93787/d56d1af430e84979a85741b3ce913398/FLAG2a95c4e6d [2024-11-13 12:44:10,370 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/data/783d93787/d56d1af430e84979a85741b3ce913398 [2024-11-13 12:44:10,375 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 12:44:10,381 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 12:44:10,383 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 12:44:10,383 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 12:44:10,389 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 12:44:10,391 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 12:44:10" (1/1) ... [2024-11-13 12:44:10,394 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@82fba61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:44:10, skipping insertion in model container [2024-11-13 12:44:10,394 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 12:44:10" (1/1) ... [2024-11-13 12:44:10,421 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 12:44:10,689 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 12:44:10,700 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 12:44:10,742 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 12:44:10,760 INFO L204 MainTranslator]: Completed translation [2024-11-13 12:44:10,761 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:44:10 WrapperNode [2024-11-13 12:44:10,761 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 12:44:10,762 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 12:44:10,763 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 12:44:10,763 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 12:44:10,773 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:44:10" (1/1) ... [2024-11-13 12:44:10,788 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:44:10" (1/1) ... [2024-11-13 12:44:10,821 INFO L138 Inliner]: procedures = 23, calls = 36, calls flagged for inlining = 14, calls inlined = 16, statements flattened = 197 [2024-11-13 12:44:10,822 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 12:44:10,822 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 12:44:10,822 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 12:44:10,823 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 12:44:10,836 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:44:10" (1/1) ... [2024-11-13 12:44:10,836 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:44:10" (1/1) ... [2024-11-13 12:44:10,839 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:44:10" (1/1) ... [2024-11-13 12:44:10,858 INFO L175 MemorySlicer]: Split 14 memory accesses to 2 slices as follows [2, 12]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-13 12:44:10,859 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:44:10" (1/1) ... [2024-11-13 12:44:10,859 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:44:10" (1/1) ... [2024-11-13 12:44:10,867 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:44:10" (1/1) ... [2024-11-13 12:44:10,872 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:44:10" (1/1) ... [2024-11-13 12:44:10,873 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:44:10" (1/1) ... [2024-11-13 12:44:10,875 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:44:10" (1/1) ... [2024-11-13 12:44:10,877 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 12:44:10,882 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 12:44:10,882 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 12:44:10,882 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 12:44:10,883 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:44:10" (1/1) ... [2024-11-13 12:44:10,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 12:44:10,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:44:10,917 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 12:44:10,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 12:44:10,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 12:44:10,953 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-13 12:44:10,953 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-13 12:44:10,954 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-13 12:44:10,954 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-13 12:44:10,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 12:44:10,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 12:44:10,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 12:44:10,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 12:44:10,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-13 12:44:10,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-13 12:44:10,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 12:44:10,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 12:44:10,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 12:44:10,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 12:44:10,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 12:44:10,957 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 12:44:11,112 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 12:44:11,115 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 12:44:11,577 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 12:44:11,577 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 12:44:11,902 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 12:44:11,902 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-13 12:44:11,902 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 12:44:11 BoogieIcfgContainer [2024-11-13 12:44:11,903 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 12:44:11,906 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 12:44:11,906 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 12:44:11,912 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 12:44:11,912 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 12:44:10" (1/3) ... [2024-11-13 12:44:11,913 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35b769b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 12:44:11, skipping insertion in model container [2024-11-13 12:44:11,913 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:44:10" (2/3) ... [2024-11-13 12:44:11,913 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35b769b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 12:44:11, skipping insertion in model container [2024-11-13 12:44:11,913 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 12:44:11" (3/3) ... [2024-11-13 12:44:11,915 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-counter-fun.wvr.c [2024-11-13 12:44:11,935 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 12:44:11,937 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-counter-fun.wvr.c that has 3 procedures, 37 locations, 1 initial locations, 4 loop locations, and 8 error locations. [2024-11-13 12:44:11,937 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 12:44:12,039 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-13 12:44:12,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 40 transitions, 94 flow [2024-11-13 12:44:12,133 INFO L124 PetriNetUnfolderBase]: 4/38 cut-off events. [2024-11-13 12:44:12,136 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 12:44:12,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 38 events. 4/38 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 70 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2024-11-13 12:44:12,142 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 40 transitions, 94 flow [2024-11-13 12:44:12,147 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 36 transitions, 81 flow [2024-11-13 12:44:12,160 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 12:44:12,179 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;@4351d5b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 12:44:12,180 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-11-13 12:44:12,184 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 12:44:12,184 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-13 12:44:12,184 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 12:44:12,184 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:44:12,185 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 12:44:12,185 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-13 12:44:12,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:12,191 INFO L85 PathProgramCache]: Analyzing trace with hash 623954, now seen corresponding path program 1 times [2024-11-13 12:44:12,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:12,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994808798] [2024-11-13 12:44:12,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:12,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:12,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:12,485 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 12:44:12,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:12,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994808798] [2024-11-13 12:44:12,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994808798] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:44:12,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:44:12,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 12:44:12,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613642660] [2024-11-13 12:44:12,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:44:12,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 12:44:12,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:12,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 12:44:12,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 12:44:12,567 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-11-13 12:44:12,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 81 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 12:44:12,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:44:12,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-11-13 12:44:12,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 12:44:12,772 INFO L124 PetriNetUnfolderBase]: 63/161 cut-off events. [2024-11-13 12:44:12,773 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-13 12:44:12,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 161 events. 63/161 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 597 event pairs, 42 based on Foata normal form. 2/146 useless extension candidates. Maximal degree in co-relation 245. Up to 107 conditions per place. [2024-11-13 12:44:12,777 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 16 selfloop transitions, 6 changer transitions 0/34 dead transitions. [2024-11-13 12:44:12,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 34 transitions, 121 flow [2024-11-13 12:44:12,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 12:44:12,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 12:44:12,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 80 transitions. [2024-11-13 12:44:12,794 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-13 12:44:12,798 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 81 flow. Second operand 4 states and 80 transitions. [2024-11-13 12:44:12,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 34 transitions, 121 flow [2024-11-13 12:44:12,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 34 transitions, 116 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-13 12:44:12,810 INFO L231 Difference]: Finished difference. Result has 37 places, 34 transitions, 84 flow [2024-11-13 12:44:12,813 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=84, PETRI_PLACES=37, PETRI_TRANSITIONS=34} [2024-11-13 12:44:12,819 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, -2 predicate places. [2024-11-13 12:44:12,819 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 34 transitions, 84 flow [2024-11-13 12:44:12,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 12:44:12,820 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:44:12,820 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-13 12:44:12,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 12:44:12,820 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-13 12:44:12,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:12,822 INFO L85 PathProgramCache]: Analyzing trace with hash 19343201, now seen corresponding path program 1 times [2024-11-13 12:44:12,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:12,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699339235] [2024-11-13 12:44:12,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:12,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:12,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:12,974 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 12:44:12,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:12,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699339235] [2024-11-13 12:44:12,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699339235] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:44:12,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:44:12,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 12:44:12,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356197362] [2024-11-13 12:44:12,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:44:12,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 12:44:12,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:12,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 12:44:12,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 12:44:13,004 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-11-13 12:44:13,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 34 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 12:44:13,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:44:13,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-11-13 12:44:13,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 12:44:13,183 INFO L124 PetriNetUnfolderBase]: 65/169 cut-off events. [2024-11-13 12:44:13,183 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-13 12:44:13,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 169 events. 65/169 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 643 event pairs, 42 based on Foata normal form. 2/156 useless extension candidates. Maximal degree in co-relation 264. Up to 116 conditions per place. [2024-11-13 12:44:13,185 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 21 selfloop transitions, 7 changer transitions 0/40 dead transitions. [2024-11-13 12:44:13,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 40 transitions, 162 flow [2024-11-13 12:44:13,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 12:44:13,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 12:44:13,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 86 transitions. [2024-11-13 12:44:13,186 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5375 [2024-11-13 12:44:13,186 INFO L175 Difference]: Start difference. First operand has 37 places, 34 transitions, 84 flow. Second operand 4 states and 86 transitions. [2024-11-13 12:44:13,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 40 transitions, 162 flow [2024-11-13 12:44:13,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 40 transitions, 140 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-13 12:44:13,193 INFO L231 Difference]: Finished difference. Result has 40 places, 40 transitions, 128 flow [2024-11-13 12:44:13,193 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=128, PETRI_PLACES=40, PETRI_TRANSITIONS=40} [2024-11-13 12:44:13,193 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 1 predicate places. [2024-11-13 12:44:13,194 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 128 flow [2024-11-13 12:44:13,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 12:44:13,194 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:44:13,194 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-13 12:44:13,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 12:44:13,194 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-13 12:44:13,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:13,195 INFO L85 PathProgramCache]: Analyzing trace with hash 728287989, now seen corresponding path program 1 times [2024-11-13 12:44:13,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:13,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819202479] [2024-11-13 12:44:13,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:13,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:13,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:13,369 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 12:44:13,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:13,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819202479] [2024-11-13 12:44:13,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819202479] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:44:13,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860566836] [2024-11-13 12:44:13,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:13,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:44:13,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:44:13,372 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:44:13,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 12:44:13,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:13,461 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 12:44:13,464 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:44:13,525 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 12:44:13,526 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:44:13,595 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 12:44:13,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860566836] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:44:13,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:44:13,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-13 12:44:13,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604331888] [2024-11-13 12:44:13,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:44:13,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 12:44:13,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:13,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 12:44:13,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-13 12:44:13,648 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-11-13 12:44:13,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 128 flow. Second operand has 10 states, 10 states have (on average 15.0) internal successors, (150), 10 states have internal predecessors, (150), 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 12:44:13,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:44:13,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-11-13 12:44:13,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 12:44:13,925 INFO L124 PetriNetUnfolderBase]: 71/193 cut-off events. [2024-11-13 12:44:13,925 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-11-13 12:44:13,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 388 conditions, 193 events. 71/193 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 780 event pairs, 42 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 275. Up to 119 conditions per place. [2024-11-13 12:44:13,931 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 21 selfloop transitions, 25 changer transitions 0/58 dead transitions. [2024-11-13 12:44:13,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 58 transitions, 298 flow [2024-11-13 12:44:13,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 12:44:13,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-13 12:44:13,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-11-13 12:44:13,935 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48 [2024-11-13 12:44:13,935 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 128 flow. Second operand 10 states and 192 transitions. [2024-11-13 12:44:13,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 58 transitions, 298 flow [2024-11-13 12:44:13,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 58 transitions, 298 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 12:44:13,941 INFO L231 Difference]: Finished difference. Result has 52 places, 58 transitions, 290 flow [2024-11-13 12:44:13,941 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=290, PETRI_PLACES=52, PETRI_TRANSITIONS=58} [2024-11-13 12:44:13,942 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 13 predicate places. [2024-11-13 12:44:13,942 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 58 transitions, 290 flow [2024-11-13 12:44:13,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.0) internal successors, (150), 10 states have internal predecessors, (150), 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 12:44:13,942 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:44:13,942 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:13,963 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 12:44:14,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:44:14,143 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-13 12:44:14,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:14,144 INFO L85 PathProgramCache]: Analyzing trace with hash -861832314, now seen corresponding path program 1 times [2024-11-13 12:44:14,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:14,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250427003] [2024-11-13 12:44:14,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:14,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:14,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:14,273 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 12:44:14,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:14,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250427003] [2024-11-13 12:44:14,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250427003] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:44:14,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:44:14,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 12:44:14,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677344924] [2024-11-13 12:44:14,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:44:14,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 12:44:14,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:14,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 12:44:14,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 12:44:14,286 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-11-13 12:44:14,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 58 transitions, 290 flow. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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 12:44:14,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:44:14,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-11-13 12:44:14,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 12:44:14,441 INFO L124 PetriNetUnfolderBase]: 165/365 cut-off events. [2024-11-13 12:44:14,441 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2024-11-13 12:44:14,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 770 conditions, 365 events. 165/365 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1578 event pairs, 67 based on Foata normal form. 10/356 useless extension candidates. Maximal degree in co-relation 704. Up to 219 conditions per place. [2024-11-13 12:44:14,444 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 61 selfloop transitions, 4 changer transitions 0/76 dead transitions. [2024-11-13 12:44:14,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 76 transitions, 460 flow [2024-11-13 12:44:14,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 12:44:14,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 12:44:14,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 103 transitions. [2024-11-13 12:44:14,446 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.64375 [2024-11-13 12:44:14,446 INFO L175 Difference]: Start difference. First operand has 52 places, 58 transitions, 290 flow. Second operand 4 states and 103 transitions. [2024-11-13 12:44:14,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 76 transitions, 460 flow [2024-11-13 12:44:14,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 76 transitions, 396 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-11-13 12:44:14,451 INFO L231 Difference]: Finished difference. Result has 53 places, 61 transitions, 255 flow [2024-11-13 12:44:14,451 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=255, PETRI_PLACES=53, PETRI_TRANSITIONS=61} [2024-11-13 12:44:14,452 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 14 predicate places. [2024-11-13 12:44:14,452 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 61 transitions, 255 flow [2024-11-13 12:44:14,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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 12:44:14,452 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:44:14,452 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:14,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 12:44:14,453 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-13 12:44:14,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:14,453 INFO L85 PathProgramCache]: Analyzing trace with hash 943803250, now seen corresponding path program 1 times [2024-11-13 12:44:14,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:14,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71671430] [2024-11-13 12:44:14,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:14,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:14,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:14,575 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 12:44:14,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:14,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71671430] [2024-11-13 12:44:14,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71671430] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:44:14,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:44:14,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 12:44:14,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465505745] [2024-11-13 12:44:14,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:44:14,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 12:44:14,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:14,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 12:44:14,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 12:44:14,586 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-11-13 12:44:14,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 61 transitions, 255 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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 12:44:14,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:44:14,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-11-13 12:44:14,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 12:44:14,784 INFO L124 PetriNetUnfolderBase]: 248/490 cut-off events. [2024-11-13 12:44:14,784 INFO L125 PetriNetUnfolderBase]: For 190/239 co-relation queries the response was YES. [2024-11-13 12:44:14,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1142 conditions, 490 events. 248/490 cut-off events. For 190/239 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2056 event pairs, 117 based on Foata normal form. 30/499 useless extension candidates. Maximal degree in co-relation 1083. Up to 310 conditions per place. [2024-11-13 12:44:14,790 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 65 selfloop transitions, 4 changer transitions 0/81 dead transitions. [2024-11-13 12:44:14,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 81 transitions, 461 flow [2024-11-13 12:44:14,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 12:44:14,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 12:44:14,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2024-11-13 12:44:14,796 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.63125 [2024-11-13 12:44:14,796 INFO L175 Difference]: Start difference. First operand has 53 places, 61 transitions, 255 flow. Second operand 4 states and 101 transitions. [2024-11-13 12:44:14,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 81 transitions, 461 flow [2024-11-13 12:44:14,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 81 transitions, 452 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 12:44:14,803 INFO L231 Difference]: Finished difference. Result has 57 places, 64 transitions, 281 flow [2024-11-13 12:44:14,804 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=281, PETRI_PLACES=57, PETRI_TRANSITIONS=64} [2024-11-13 12:44:14,804 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 18 predicate places. [2024-11-13 12:44:14,805 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 64 transitions, 281 flow [2024-11-13 12:44:14,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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 12:44:14,805 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:44:14,805 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:14,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 12:44:14,805 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-13 12:44:14,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:14,810 INFO L85 PathProgramCache]: Analyzing trace with hash -582182879, now seen corresponding path program 1 times [2024-11-13 12:44:14,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:14,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711238185] [2024-11-13 12:44:14,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:14,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:14,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:15,065 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 12:44:15,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:15,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711238185] [2024-11-13 12:44:15,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711238185] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:44:15,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:44:15,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 12:44:15,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524092213] [2024-11-13 12:44:15,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:44:15,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 12:44:15,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:15,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 12:44:15,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 12:44:15,068 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 40 [2024-11-13 12:44:15,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 64 transitions, 281 flow. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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 12:44:15,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:44:15,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 40 [2024-11-13 12:44:15,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 12:44:15,245 INFO L124 PetriNetUnfolderBase]: 190/468 cut-off events. [2024-11-13 12:44:15,245 INFO L125 PetriNetUnfolderBase]: For 218/249 co-relation queries the response was YES. [2024-11-13 12:44:15,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1180 conditions, 468 events. 190/468 cut-off events. For 218/249 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2111 event pairs, 122 based on Foata normal form. 25/484 useless extension candidates. Maximal degree in co-relation 1095. Up to 273 conditions per place. [2024-11-13 12:44:15,249 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 55 selfloop transitions, 3 changer transitions 14/88 dead transitions. [2024-11-13 12:44:15,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 88 transitions, 529 flow [2024-11-13 12:44:15,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 12:44:15,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 12:44:15,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2024-11-13 12:44:15,251 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.68125 [2024-11-13 12:44:15,251 INFO L175 Difference]: Start difference. First operand has 57 places, 64 transitions, 281 flow. Second operand 4 states and 109 transitions. [2024-11-13 12:44:15,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 88 transitions, 529 flow [2024-11-13 12:44:15,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 88 transitions, 524 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 12:44:15,256 INFO L231 Difference]: Finished difference. Result has 60 places, 64 transitions, 289 flow [2024-11-13 12:44:15,257 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=289, PETRI_PLACES=60, PETRI_TRANSITIONS=64} [2024-11-13 12:44:15,257 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 21 predicate places. [2024-11-13 12:44:15,258 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 64 transitions, 289 flow [2024-11-13 12:44:15,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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 12:44:15,258 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:44:15,258 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-13 12:44:15,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 12:44:15,259 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-13 12:44:15,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:15,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1184126561, now seen corresponding path program 2 times [2024-11-13 12:44:15,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:15,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683143985] [2024-11-13 12:44:15,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:15,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:15,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:15,500 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 12:44:15,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:15,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683143985] [2024-11-13 12:44:15,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683143985] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:44:15,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262277219] [2024-11-13 12:44:15,500 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 12:44:15,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:44:15,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:44:15,502 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:44:15,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 12:44:15,587 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 12:44:15,587 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:44:15,588 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 12:44:15,589 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:44:15,657 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 12:44:15,657 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:44:15,703 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 12:44:15,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262277219] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:44:15,703 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:44:15,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-13 12:44:15,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525469605] [2024-11-13 12:44:15,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:44:15,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 12:44:15,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:15,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 12:44:15,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-13 12:44:15,764 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-11-13 12:44:15,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 64 transitions, 289 flow. Second operand has 14 states, 14 states have (on average 15.142857142857142) internal successors, (212), 14 states have internal predecessors, (212), 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 12:44:15,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:44:15,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-11-13 12:44:15,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 12:44:16,263 INFO L124 PetriNetUnfolderBase]: 193/428 cut-off events. [2024-11-13 12:44:16,263 INFO L125 PetriNetUnfolderBase]: For 295/326 co-relation queries the response was YES. [2024-11-13 12:44:16,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1155 conditions, 428 events. 193/428 cut-off events. For 295/326 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1847 event pairs, 122 based on Foata normal form. 15/405 useless extension candidates. Maximal degree in co-relation 1038. Up to 314 conditions per place. [2024-11-13 12:44:16,268 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 21 selfloop transitions, 34 changer transitions 0/69 dead transitions. [2024-11-13 12:44:16,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 69 transitions, 418 flow [2024-11-13 12:44:16,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-13 12:44:16,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-13 12:44:16,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 390 transitions. [2024-11-13 12:44:16,271 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-11-13 12:44:16,271 INFO L175 Difference]: Start difference. First operand has 60 places, 64 transitions, 289 flow. Second operand 24 states and 390 transitions. [2024-11-13 12:44:16,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 69 transitions, 418 flow [2024-11-13 12:44:16,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 69 transitions, 414 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-13 12:44:16,276 INFO L231 Difference]: Finished difference. Result has 83 places, 69 transitions, 385 flow [2024-11-13 12:44:16,276 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=385, PETRI_PLACES=83, PETRI_TRANSITIONS=69} [2024-11-13 12:44:16,278 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 44 predicate places. [2024-11-13 12:44:16,278 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 69 transitions, 385 flow [2024-11-13 12:44:16,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.142857142857142) internal successors, (212), 14 states have internal predecessors, (212), 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 12:44:16,279 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:44:16,280 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:16,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 12:44:16,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-13 12:44:16,484 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-13 12:44:16,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:16,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1672097099, now seen corresponding path program 1 times [2024-11-13 12:44:16,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:16,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2942268] [2024-11-13 12:44:16,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:16,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:16,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:16,635 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 12:44:16,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:16,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2942268] [2024-11-13 12:44:16,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2942268] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:44:16,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536217137] [2024-11-13 12:44:16,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:16,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:44:16,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:44:16,640 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:44:16,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 12:44:16,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:16,747 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 12:44:16,748 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:44:16,786 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 12:44:16,787 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 12:44:16,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536217137] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:44:16,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 12:44:16,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-13 12:44:16,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389545050] [2024-11-13 12:44:16,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:44:16,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 12:44:16,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:16,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 12:44:16,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-13 12:44:16,806 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-11-13 12:44:16,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 69 transitions, 385 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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 12:44:16,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:44:16,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-11-13 12:44:16,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 12:44:17,068 INFO L124 PetriNetUnfolderBase]: 259/558 cut-off events. [2024-11-13 12:44:17,069 INFO L125 PetriNetUnfolderBase]: For 336/371 co-relation queries the response was YES. [2024-11-13 12:44:17,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1533 conditions, 558 events. 259/558 cut-off events. For 336/371 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2512 event pairs, 41 based on Foata normal form. 26/554 useless extension candidates. Maximal degree in co-relation 1454. Up to 174 conditions per place. [2024-11-13 12:44:17,073 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 87 selfloop transitions, 7 changer transitions 0/105 dead transitions. [2024-11-13 12:44:17,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 105 transitions, 701 flow [2024-11-13 12:44:17,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 12:44:17,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 12:44:17,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-11-13 12:44:17,075 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-11-13 12:44:17,075 INFO L175 Difference]: Start difference. First operand has 83 places, 69 transitions, 385 flow. Second operand 6 states and 145 transitions. [2024-11-13 12:44:17,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 105 transitions, 701 flow [2024-11-13 12:44:17,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 105 transitions, 600 flow, removed 10 selfloop flow, removed 12 redundant places. [2024-11-13 12:44:17,082 INFO L231 Difference]: Finished difference. Result has 75 places, 68 transitions, 294 flow [2024-11-13 12:44:17,083 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=294, PETRI_PLACES=75, PETRI_TRANSITIONS=68} [2024-11-13 12:44:17,084 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 36 predicate places. [2024-11-13 12:44:17,086 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 68 transitions, 294 flow [2024-11-13 12:44:17,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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 12:44:17,086 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:44:17,087 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:17,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-13 12:44:17,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:44:17,288 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-13 12:44:17,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:17,288 INFO L85 PathProgramCache]: Analyzing trace with hash -295401874, now seen corresponding path program 1 times [2024-11-13 12:44:17,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:17,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127715852] [2024-11-13 12:44:17,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:17,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:17,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:17,431 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 12:44:17,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:17,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127715852] [2024-11-13 12:44:17,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127715852] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:44:17,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940659705] [2024-11-13 12:44:17,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:17,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:44:17,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:44:17,435 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:44:17,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 12:44:17,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:17,540 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 12:44:17,541 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:44:17,584 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 12:44:17,584 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:44:17,647 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 12:44:17,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940659705] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:44:17,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:44:17,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-13 12:44:17,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080993548] [2024-11-13 12:44:17,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:44:17,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 12:44:17,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:17,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 12:44:17,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-13 12:44:17,677 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-11-13 12:44:17,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 68 transitions, 294 flow. Second operand has 12 states, 12 states have (on average 17.0) internal successors, (204), 12 states have internal predecessors, (204), 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 12:44:17,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:44:17,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-11-13 12:44:17,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 12:44:18,113 INFO L124 PetriNetUnfolderBase]: 499/1012 cut-off events. [2024-11-13 12:44:18,113 INFO L125 PetriNetUnfolderBase]: For 855/925 co-relation queries the response was YES. [2024-11-13 12:44:18,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2848 conditions, 1012 events. 499/1012 cut-off events. For 855/925 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 4596 event pairs, 113 based on Foata normal form. 66/1051 useless extension candidates. Maximal degree in co-relation 2777. Up to 374 conditions per place. [2024-11-13 12:44:18,124 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 129 selfloop transitions, 13 changer transitions 0/153 dead transitions. [2024-11-13 12:44:18,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 153 transitions, 904 flow [2024-11-13 12:44:18,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 12:44:18,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-13 12:44:18,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 247 transitions. [2024-11-13 12:44:18,128 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6175 [2024-11-13 12:44:18,128 INFO L175 Difference]: Start difference. First operand has 75 places, 68 transitions, 294 flow. Second operand 10 states and 247 transitions. [2024-11-13 12:44:18,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 153 transitions, 904 flow [2024-11-13 12:44:18,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 153 transitions, 874 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-13 12:44:18,134 INFO L231 Difference]: Finished difference. Result has 83 places, 77 transitions, 362 flow [2024-11-13 12:44:18,135 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=362, PETRI_PLACES=83, PETRI_TRANSITIONS=77} [2024-11-13 12:44:18,135 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 44 predicate places. [2024-11-13 12:44:18,135 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 77 transitions, 362 flow [2024-11-13 12:44:18,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.0) internal successors, (204), 12 states have internal predecessors, (204), 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 12:44:18,137 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:44:18,138 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:18,158 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 12:44:18,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:44:18,338 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-13 12:44:18,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:18,339 INFO L85 PathProgramCache]: Analyzing trace with hash -854208750, now seen corresponding path program 1 times [2024-11-13 12:44:18,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:18,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188798591] [2024-11-13 12:44:18,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:18,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:18,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:18,510 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 12:44:18,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:18,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188798591] [2024-11-13 12:44:18,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188798591] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:44:18,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:44:18,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 12:44:18,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934022301] [2024-11-13 12:44:18,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:44:18,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 12:44:18,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:18,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 12:44:18,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 12:44:18,512 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 40 [2024-11-13 12:44:18,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 77 transitions, 362 flow. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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 12:44:18,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:44:18,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 40 [2024-11-13 12:44:18,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 12:44:18,758 INFO L124 PetriNetUnfolderBase]: 419/1060 cut-off events. [2024-11-13 12:44:18,758 INFO L125 PetriNetUnfolderBase]: For 1070/1078 co-relation queries the response was YES. [2024-11-13 12:44:18,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2901 conditions, 1060 events. 419/1060 cut-off events. For 1070/1078 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 5348 event pairs, 136 based on Foata normal form. 11/1059 useless extension candidates. Maximal degree in co-relation 2828. Up to 479 conditions per place. [2024-11-13 12:44:18,767 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 59 selfloop transitions, 10 changer transitions 10/96 dead transitions. [2024-11-13 12:44:18,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 96 transitions, 589 flow [2024-11-13 12:44:18,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 12:44:18,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 12:44:18,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 134 transitions. [2024-11-13 12:44:18,769 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.67 [2024-11-13 12:44:18,769 INFO L175 Difference]: Start difference. First operand has 83 places, 77 transitions, 362 flow. Second operand 5 states and 134 transitions. [2024-11-13 12:44:18,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 96 transitions, 589 flow [2024-11-13 12:44:18,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 96 transitions, 574 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-13 12:44:18,776 INFO L231 Difference]: Finished difference. Result has 87 places, 78 transitions, 393 flow [2024-11-13 12:44:18,776 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=393, PETRI_PLACES=87, PETRI_TRANSITIONS=78} [2024-11-13 12:44:18,776 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 48 predicate places. [2024-11-13 12:44:18,777 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 78 transitions, 393 flow [2024-11-13 12:44:18,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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 12:44:18,777 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:44:18,777 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1] [2024-11-13 12:44:18,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 12:44:18,777 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-13 12:44:18,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:18,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1007615277, now seen corresponding path program 1 times [2024-11-13 12:44:18,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:18,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039625253] [2024-11-13 12:44:18,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:18,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:18,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:19,018 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:44:19,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:19,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039625253] [2024-11-13 12:44:19,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039625253] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:44:19,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767487772] [2024-11-13 12:44:19,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:19,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:44:19,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:44:19,021 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:44:19,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 12:44:19,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:19,114 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-13 12:44:19,116 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:44:19,178 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:44:19,178 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:44:19,410 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:44:19,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767487772] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:44:19,411 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:44:19,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2024-11-13 12:44:19,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247698419] [2024-11-13 12:44:19,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:44:19,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-13 12:44:19,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:19,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-13 12:44:19,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2024-11-13 12:44:19,502 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-11-13 12:44:19,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 78 transitions, 393 flow. Second operand has 28 states, 28 states have (on average 15.071428571428571) internal successors, (422), 28 states have internal predecessors, (422), 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 12:44:19,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:44:19,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-11-13 12:44:19,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 12:44:20,059 INFO L124 PetriNetUnfolderBase]: 396/849 cut-off events. [2024-11-13 12:44:20,060 INFO L125 PetriNetUnfolderBase]: For 1598/1618 co-relation queries the response was YES. [2024-11-13 12:44:20,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2727 conditions, 849 events. 396/849 cut-off events. For 1598/1618 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3969 event pairs, 239 based on Foata normal form. 14/782 useless extension candidates. Maximal degree in co-relation 2453. Up to 612 conditions per place. [2024-11-13 12:44:20,068 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 32 selfloop transitions, 72 changer transitions 0/120 dead transitions. [2024-11-13 12:44:20,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 120 transitions, 832 flow [2024-11-13 12:44:20,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-13 12:44:20,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-13 12:44:20,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 463 transitions. [2024-11-13 12:44:20,071 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44519230769230766 [2024-11-13 12:44:20,071 INFO L175 Difference]: Start difference. First operand has 87 places, 78 transitions, 393 flow. Second operand 26 states and 463 transitions. [2024-11-13 12:44:20,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 120 transitions, 832 flow [2024-11-13 12:44:20,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 120 transitions, 811 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-13 12:44:20,079 INFO L231 Difference]: Finished difference. Result has 115 places, 120 transitions, 799 flow [2024-11-13 12:44:20,079 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=799, PETRI_PLACES=115, PETRI_TRANSITIONS=120} [2024-11-13 12:44:20,080 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 76 predicate places. [2024-11-13 12:44:20,080 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 120 transitions, 799 flow [2024-11-13 12:44:20,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 15.071428571428571) internal successors, (422), 28 states have internal predecessors, (422), 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 12:44:20,081 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:44:20,081 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:20,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-13 12:44:20,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-13 12:44:20,281 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-13 12:44:20,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:20,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1940546839, now seen corresponding path program 1 times [2024-11-13 12:44:20,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:20,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562878324] [2024-11-13 12:44:20,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:20,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:20,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:20,535 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 12:44:20,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:20,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562878324] [2024-11-13 12:44:20,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562878324] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:44:20,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960400016] [2024-11-13 12:44:20,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:20,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:44:20,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:44:20,541 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:44:20,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 12:44:20,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:20,650 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 12:44:20,651 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:44:20,682 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 12:44:20,682 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 12:44:20,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960400016] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:44:20,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 12:44:20,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-13 12:44:20,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615632192] [2024-11-13 12:44:20,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:44:20,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 12:44:20,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:20,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 12:44:20,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-13 12:44:20,702 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-11-13 12:44:20,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 120 transitions, 799 flow. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 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 12:44:20,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:44:20,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-11-13 12:44:20,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 12:44:21,017 INFO L124 PetriNetUnfolderBase]: 531/1107 cut-off events. [2024-11-13 12:44:21,017 INFO L125 PetriNetUnfolderBase]: For 1596/1613 co-relation queries the response was YES. [2024-11-13 12:44:21,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3485 conditions, 1107 events. 531/1107 cut-off events. For 1596/1613 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 5402 event pairs, 93 based on Foata normal form. 25/1086 useless extension candidates. Maximal degree in co-relation 3351. Up to 365 conditions per place. [2024-11-13 12:44:21,028 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 157 selfloop transitions, 7 changer transitions 0/177 dead transitions. [2024-11-13 12:44:21,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 177 transitions, 1431 flow [2024-11-13 12:44:21,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 12:44:21,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 12:44:21,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-11-13 12:44:21,030 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5875 [2024-11-13 12:44:21,030 INFO L175 Difference]: Start difference. First operand has 115 places, 120 transitions, 799 flow. Second operand 6 states and 141 transitions. [2024-11-13 12:44:21,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 177 transitions, 1431 flow [2024-11-13 12:44:21,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 177 transitions, 1246 flow, removed 54 selfloop flow, removed 12 redundant places. [2024-11-13 12:44:21,042 INFO L231 Difference]: Finished difference. Result has 107 places, 119 transitions, 624 flow [2024-11-13 12:44:21,042 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=624, PETRI_PLACES=107, PETRI_TRANSITIONS=119} [2024-11-13 12:44:21,047 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 68 predicate places. [2024-11-13 12:44:21,047 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 119 transitions, 624 flow [2024-11-13 12:44:21,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 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 12:44:21,047 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:44:21,047 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:21,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-13 12:44:21,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-13 12:44:21,248 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-13 12:44:21,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:21,248 INFO L85 PathProgramCache]: Analyzing trace with hash 27410517, now seen corresponding path program 1 times [2024-11-13 12:44:21,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:21,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800009818] [2024-11-13 12:44:21,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:21,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:21,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:21,367 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 12:44:21,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:21,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800009818] [2024-11-13 12:44:21,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800009818] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:44:21,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222224745] [2024-11-13 12:44:21,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:21,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:44:21,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:44:21,370 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:44:21,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 12:44:21,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:21,479 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 12:44:21,481 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:44:21,512 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 12:44:21,512 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:44:21,563 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 12:44:21,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222224745] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:44:21,563 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:44:21,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-13 12:44:21,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770935290] [2024-11-13 12:44:21,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:44:21,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 12:44:21,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:21,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 12:44:21,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-13 12:44:21,590 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-11-13 12:44:21,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 119 transitions, 624 flow. Second operand has 12 states, 12 states have (on average 17.333333333333332) internal successors, (208), 12 states have internal predecessors, (208), 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 12:44:21,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:44:21,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-11-13 12:44:21,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 12:44:22,196 INFO L124 PetriNetUnfolderBase]: 1011/1970 cut-off events. [2024-11-13 12:44:22,196 INFO L125 PetriNetUnfolderBase]: For 3049/3102 co-relation queries the response was YES. [2024-11-13 12:44:22,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6244 conditions, 1970 events. 1011/1970 cut-off events. For 3049/3102 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 10015 event pairs, 187 based on Foata normal form. 75/2028 useless extension candidates. Maximal degree in co-relation 6132. Up to 745 conditions per place. [2024-11-13 12:44:22,215 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 219 selfloop transitions, 13 changer transitions 0/245 dead transitions. [2024-11-13 12:44:22,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 245 transitions, 1764 flow [2024-11-13 12:44:22,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 12:44:22,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-13 12:44:22,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 239 transitions. [2024-11-13 12:44:22,217 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5975 [2024-11-13 12:44:22,217 INFO L175 Difference]: Start difference. First operand has 107 places, 119 transitions, 624 flow. Second operand 10 states and 239 transitions. [2024-11-13 12:44:22,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 245 transitions, 1764 flow [2024-11-13 12:44:22,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 245 transitions, 1734 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-13 12:44:22,231 INFO L231 Difference]: Finished difference. Result has 115 places, 128 transitions, 692 flow [2024-11-13 12:44:22,231 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=692, PETRI_PLACES=115, PETRI_TRANSITIONS=128} [2024-11-13 12:44:22,233 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 76 predicate places. [2024-11-13 12:44:22,233 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 128 transitions, 692 flow [2024-11-13 12:44:22,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.333333333333332) internal successors, (208), 12 states have internal predecessors, (208), 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 12:44:22,233 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:44:22,234 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:22,254 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 12:44:22,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-13 12:44:22,438 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-13 12:44:22,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:22,439 INFO L85 PathProgramCache]: Analyzing trace with hash 2049061334, now seen corresponding path program 1 times [2024-11-13 12:44:22,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:22,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845775875] [2024-11-13 12:44:22,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:22,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:22,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:22,728 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 12:44:22,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:22,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845775875] [2024-11-13 12:44:22,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845775875] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:44:22,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294378363] [2024-11-13 12:44:22,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:22,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:44:22,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:44:22,731 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:44:22,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 12:44:22,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:22,844 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-13 12:44:22,846 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:44:22,913 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 12:44:22,914 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:44:23,104 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 12:44:23,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294378363] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:44:23,105 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:44:23,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-11-13 12:44:23,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269874052] [2024-11-13 12:44:23,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:44:23,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-13 12:44:23,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:23,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-13 12:44:23,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-11-13 12:44:23,161 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-11-13 12:44:23,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 128 transitions, 692 flow. Second operand has 24 states, 24 states have (on average 16.833333333333332) internal successors, (404), 24 states have internal predecessors, (404), 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 12:44:23,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:44:23,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-11-13 12:44:23,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 12:44:24,422 INFO L124 PetriNetUnfolderBase]: 2001/3791 cut-off events. [2024-11-13 12:44:24,422 INFO L125 PetriNetUnfolderBase]: For 8879/9001 co-relation queries the response was YES. [2024-11-13 12:44:24,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12261 conditions, 3791 events. 2001/3791 cut-off events. For 8879/9001 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 20185 event pairs, 161 based on Foata normal form. 156/3939 useless extension candidates. Maximal degree in co-relation 12147. Up to 890 conditions per place. [2024-11-13 12:44:24,455 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 413 selfloop transitions, 31 changer transitions 0/457 dead transitions. [2024-11-13 12:44:24,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 457 transitions, 3480 flow [2024-11-13 12:44:24,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-13 12:44:24,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-13 12:44:24,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 538 transitions. [2024-11-13 12:44:24,458 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6113636363636363 [2024-11-13 12:44:24,458 INFO L175 Difference]: Start difference. First operand has 115 places, 128 transitions, 692 flow. Second operand 22 states and 538 transitions. [2024-11-13 12:44:24,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 457 transitions, 3480 flow [2024-11-13 12:44:24,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 457 transitions, 3289 flow, removed 63 selfloop flow, removed 2 redundant places. [2024-11-13 12:44:24,477 INFO L231 Difference]: Finished difference. Result has 140 places, 146 transitions, 887 flow [2024-11-13 12:44:24,478 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=681, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=887, PETRI_PLACES=140, PETRI_TRANSITIONS=146} [2024-11-13 12:44:24,478 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 101 predicate places. [2024-11-13 12:44:24,479 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 146 transitions, 887 flow [2024-11-13 12:44:24,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 16.833333333333332) internal successors, (404), 24 states have internal predecessors, (404), 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 12:44:24,480 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:44:24,480 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:24,501 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 12:44:24,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-13 12:44:24,681 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-13 12:44:24,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:24,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1365295091, now seen corresponding path program 2 times [2024-11-13 12:44:24,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:24,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799548690] [2024-11-13 12:44:24,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:24,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:24,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:25,035 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 12:44:25,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:25,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799548690] [2024-11-13 12:44:25,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799548690] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:44:25,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236382674] [2024-11-13 12:44:25,035 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 12:44:25,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:44:25,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:44:25,038 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:44:25,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 12:44:25,150 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 12:44:25,150 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:44:25,153 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 12:44:25,155 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:44:25,259 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-13 12:44:25,259 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:44:25,350 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-13 12:44:25,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236382674] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:44:25,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:44:25,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 14 [2024-11-13 12:44:25,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921369193] [2024-11-13 12:44:25,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:44:25,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-13 12:44:25,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:25,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-13 12:44:25,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-13 12:44:25,402 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-11-13 12:44:25,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 146 transitions, 887 flow. Second operand has 15 states, 15 states have (on average 17.333333333333332) internal successors, (260), 15 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:44:25,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:44:25,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-11-13 12:44:25,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 12:44:26,905 INFO L124 PetriNetUnfolderBase]: 2952/4981 cut-off events. [2024-11-13 12:44:26,906 INFO L125 PetriNetUnfolderBase]: For 13966/14368 co-relation queries the response was YES. [2024-11-13 12:44:26,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17784 conditions, 4981 events. 2952/4981 cut-off events. For 13966/14368 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 25712 event pairs, 234 based on Foata normal form. 98/5024 useless extension candidates. Maximal degree in co-relation 17663. Up to 1112 conditions per place. [2024-11-13 12:44:26,981 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 278 selfloop transitions, 21 changer transitions 156/473 dead transitions. [2024-11-13 12:44:26,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 473 transitions, 4307 flow [2024-11-13 12:44:26,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 12:44:26,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-13 12:44:26,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 333 transitions. [2024-11-13 12:44:26,984 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.555 [2024-11-13 12:44:26,985 INFO L175 Difference]: Start difference. First operand has 140 places, 146 transitions, 887 flow. Second operand 15 states and 333 transitions. [2024-11-13 12:44:26,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 473 transitions, 4307 flow [2024-11-13 12:44:27,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 473 transitions, 3519 flow, removed 269 selfloop flow, removed 13 redundant places. [2024-11-13 12:44:27,015 INFO L231 Difference]: Finished difference. Result has 141 places, 138 transitions, 810 flow [2024-11-13 12:44:27,018 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=787, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=810, PETRI_PLACES=141, PETRI_TRANSITIONS=138} [2024-11-13 12:44:27,018 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 102 predicate places. [2024-11-13 12:44:27,018 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 138 transitions, 810 flow [2024-11-13 12:44:27,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 17.333333333333332) internal successors, (260), 15 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:44:27,019 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:44:27,019 INFO L204 CegarLoopForPetriNet]: trace histogram [13, 13, 12, 1, 1, 1] [2024-11-13 12:44:27,082 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 12:44:27,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-13 12:44:27,219 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-13 12:44:27,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:27,220 INFO L85 PathProgramCache]: Analyzing trace with hash -2056237638, now seen corresponding path program 2 times [2024-11-13 12:44:27,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:27,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195754014] [2024-11-13 12:44:27,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:27,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:27,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:27,949 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:44:27,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:27,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195754014] [2024-11-13 12:44:27,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195754014] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:44:27,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196862869] [2024-11-13 12:44:27,949 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 12:44:27,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:44:27,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:44:27,952 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:44:27,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 12:44:28,054 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 12:44:28,054 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:44:28,055 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 12:44:28,056 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:44:28,195 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-13 12:44:28,196 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:44:28,313 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-13 12:44:28,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196862869] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:44:28,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:44:28,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 3, 3] total 30 [2024-11-13 12:44:28,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742082541] [2024-11-13 12:44:28,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:44:28,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-13 12:44:28,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:28,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-13 12:44:28,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2024-11-13 12:44:28,419 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-11-13 12:44:28,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 138 transitions, 810 flow. Second operand has 31 states, 31 states have (on average 15.096774193548388) internal successors, (468), 31 states have internal predecessors, (468), 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 12:44:28,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:44:28,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-11-13 12:44:28,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 12:44:29,825 INFO L124 PetriNetUnfolderBase]: 1410/3196 cut-off events. [2024-11-13 12:44:29,825 INFO L125 PetriNetUnfolderBase]: For 5731/5783 co-relation queries the response was YES. [2024-11-13 12:44:29,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10880 conditions, 3196 events. 1410/3196 cut-off events. For 5731/5783 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 19279 event pairs, 995 based on Foata normal form. 4/3152 useless extension candidates. Maximal degree in co-relation 10752. Up to 2107 conditions per place. [2024-11-13 12:44:29,846 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 34 selfloop transitions, 83 changer transitions 1/143 dead transitions. [2024-11-13 12:44:29,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 143 transitions, 1052 flow [2024-11-13 12:44:29,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-13 12:44:29,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-11-13 12:44:29,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 531 transitions. [2024-11-13 12:44:29,849 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4282258064516129 [2024-11-13 12:44:29,849 INFO L175 Difference]: Start difference. First operand has 141 places, 138 transitions, 810 flow. Second operand 31 states and 531 transitions. [2024-11-13 12:44:29,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 143 transitions, 1052 flow [2024-11-13 12:44:29,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 143 transitions, 947 flow, removed 11 selfloop flow, removed 23 redundant places. [2024-11-13 12:44:29,863 INFO L231 Difference]: Finished difference. Result has 145 places, 142 transitions, 870 flow [2024-11-13 12:44:29,863 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=870, PETRI_PLACES=145, PETRI_TRANSITIONS=142} [2024-11-13 12:44:29,864 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 106 predicate places. [2024-11-13 12:44:29,864 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 142 transitions, 870 flow [2024-11-13 12:44:29,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 15.096774193548388) internal successors, (468), 31 states have internal predecessors, (468), 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 12:44:29,864 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:44:29,864 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:29,885 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 12:44:30,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-13 12:44:30,065 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-13 12:44:30,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:30,065 INFO L85 PathProgramCache]: Analyzing trace with hash 663970166, now seen corresponding path program 2 times [2024-11-13 12:44:30,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:30,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352639145] [2024-11-13 12:44:30,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:30,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:30,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:30,846 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 12:44:30,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:30,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352639145] [2024-11-13 12:44:30,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352639145] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:44:30,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922983248] [2024-11-13 12:44:30,847 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 12:44:30,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:44:30,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:44:30,850 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:44:30,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 12:44:30,971 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 12:44:30,971 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:44:30,972 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 12:44:30,975 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:44:31,144 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2024-11-13 12:44:31,144 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:44:31,289 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2024-11-13 12:44:31,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922983248] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:44:31,290 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:44:31,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 3, 3] total 26 [2024-11-13 12:44:31,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524204469] [2024-11-13 12:44:31,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:44:31,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-13 12:44:31,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:31,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-13 12:44:31,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=519, Unknown=0, NotChecked=0, Total=702 [2024-11-13 12:44:31,351 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-11-13 12:44:31,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 142 transitions, 870 flow. Second operand has 27 states, 27 states have (on average 16.59259259259259) internal successors, (448), 27 states have internal predecessors, (448), 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 12:44:31,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:44:31,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-11-13 12:44:31,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 12:44:32,892 INFO L124 PetriNetUnfolderBase]: 2890/5103 cut-off events. [2024-11-13 12:44:32,892 INFO L125 PetriNetUnfolderBase]: For 13965/14511 co-relation queries the response was YES. [2024-11-13 12:44:32,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16059 conditions, 5103 events. 2890/5103 cut-off events. For 13965/14511 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 28280 event pairs, 56 based on Foata normal form. 64/5152 useless extension candidates. Maximal degree in co-relation 15661. Up to 1000 conditions per place. [2024-11-13 12:44:32,924 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 0 selfloop transitions, 0 changer transitions 599/599 dead transitions. [2024-11-13 12:44:32,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 599 transitions, 4292 flow [2024-11-13 12:44:32,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-13 12:44:32,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-13 12:44:32,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 613 transitions. [2024-11-13 12:44:32,927 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5675925925925925 [2024-11-13 12:44:32,927 INFO L175 Difference]: Start difference. First operand has 145 places, 142 transitions, 870 flow. Second operand 27 states and 613 transitions. [2024-11-13 12:44:32,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 599 transitions, 4292 flow [2024-11-13 12:44:32,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 599 transitions, 4021 flow, removed 52 selfloop flow, removed 37 redundant places. [2024-11-13 12:44:32,956 INFO L231 Difference]: Finished difference. Result has 132 places, 0 transitions, 0 flow [2024-11-13 12:44:32,956 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=651, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=0, PETRI_PLACES=132, PETRI_TRANSITIONS=0} [2024-11-13 12:44:32,957 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 93 predicate places. [2024-11-13 12:44:32,957 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 0 transitions, 0 flow [2024-11-13 12:44:32,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 16.59259259259259) internal successors, (448), 27 states have internal predecessors, (448), 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 12:44:32,960 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 14 remaining) [2024-11-13 12:44:32,960 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 14 remaining) [2024-11-13 12:44:32,961 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2024-11-13 12:44:32,961 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2024-11-13 12:44:32,961 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2024-11-13 12:44:32,961 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 14 remaining) [2024-11-13 12:44:32,961 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 14 remaining) [2024-11-13 12:44:32,961 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 14 remaining) [2024-11-13 12:44:32,962 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 14 remaining) [2024-11-13 12:44:32,962 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 14 remaining) [2024-11-13 12:44:32,962 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2024-11-13 12:44:32,962 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2024-11-13 12:44:32,962 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2024-11-13 12:44:32,962 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2024-11-13 12:44:32,982 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-13 12:44:33,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-13 12:44:33,163 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:33,170 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-13 12:44:33,170 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 12:44:33,178 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 12:44:33 BasicIcfg [2024-11-13 12:44:33,178 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 12:44:33,179 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 12:44:33,179 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 12:44:33,179 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 12:44:33,180 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 12:44:11" (3/4) ... [2024-11-13 12:44:33,182 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-13 12:44:33,185 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-13 12:44:33,185 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-13 12:44:33,192 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 114 nodes and edges [2024-11-13 12:44:33,193 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2024-11-13 12:44:33,193 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-11-13 12:44:33,193 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-13 12:44:33,289 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/witness.graphml [2024-11-13 12:44:33,290 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/witness.yml [2024-11-13 12:44:33,290 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 12:44:33,292 INFO L158 Benchmark]: Toolchain (without parser) took 22911.42ms. Allocated memory was 142.6MB in the beginning and 494.9MB in the end (delta: 352.3MB). Free memory was 119.4MB in the beginning and 159.3MB in the end (delta: -39.9MB). Peak memory consumption was 306.0MB. Max. memory is 16.1GB. [2024-11-13 12:44:33,293 INFO L158 Benchmark]: CDTParser took 0.45ms. Allocated memory is still 142.6MB. Free memory is still 80.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 12:44:33,293 INFO L158 Benchmark]: CACSL2BoogieTranslator took 378.62ms. Allocated memory is still 142.6MB. Free memory was 119.2MB in the beginning and 107.3MB in the end (delta: 11.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 12:44:33,294 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.35ms. Allocated memory is still 142.6MB. Free memory was 107.3MB in the beginning and 105.5MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 12:44:33,295 INFO L158 Benchmark]: Boogie Preprocessor took 55.32ms. Allocated memory is still 142.6MB. Free memory was 105.5MB in the beginning and 103.3MB in the end (delta: 2.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 12:44:33,295 INFO L158 Benchmark]: RCFGBuilder took 1021.15ms. Allocated memory is still 142.6MB. Free memory was 103.3MB in the beginning and 49.2MB in the end (delta: 54.1MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2024-11-13 12:44:33,295 INFO L158 Benchmark]: TraceAbstraction took 21272.68ms. Allocated memory was 142.6MB in the beginning and 494.9MB in the end (delta: 352.3MB). Free memory was 48.4MB in the beginning and 166.6MB in the end (delta: -118.2MB). Peak memory consumption was 238.9MB. Max. memory is 16.1GB. [2024-11-13 12:44:33,295 INFO L158 Benchmark]: Witness Printer took 111.42ms. Allocated memory is still 494.9MB. Free memory was 166.6MB in the beginning and 159.3MB in the end (delta: 7.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 12:44:33,297 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45ms. Allocated memory is still 142.6MB. Free memory is still 80.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 378.62ms. Allocated memory is still 142.6MB. Free memory was 119.2MB in the beginning and 107.3MB in the end (delta: 11.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.35ms. Allocated memory is still 142.6MB. Free memory was 107.3MB in the beginning and 105.5MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 55.32ms. Allocated memory is still 142.6MB. Free memory was 105.5MB in the beginning and 103.3MB in the end (delta: 2.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 1021.15ms. Allocated memory is still 142.6MB. Free memory was 103.3MB in the beginning and 49.2MB in the end (delta: 54.1MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. * TraceAbstraction took 21272.68ms. Allocated memory was 142.6MB in the beginning and 494.9MB in the end (delta: 352.3MB). Free memory was 48.4MB in the beginning and 166.6MB in the end (delta: -118.2MB). Peak memory consumption was 238.9MB. Max. memory is 16.1GB. * Witness Printer took 111.42ms. Allocated memory is still 494.9MB. Free memory was 166.6MB in the beginning and 159.3MB in the end (delta: 7.3MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 57 locations, 14 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 21.1s, OverallIterations: 17, TraceHistogramMax: 13, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 11.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1848 SdHoareTripleChecker+Valid, 3.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1761 mSDsluCounter, 422 SdHoareTripleChecker+Invalid, 3.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 403 mSDsCounter, 215 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3785 IncrementalHoareTripleChecker+Invalid, 4000 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 215 mSolverCounterUnsat, 19 mSDtfsCounter, 3785 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 808 GetRequests, 499 SyntacticMatches, 7 SemanticMatches, 302 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2156 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=887occurred in iteration=14, InterpolantAutomatonStates: 212, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 5.8s InterpolantComputationTime, 668 NumberOfCodeBlocks, 538 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 896 ConstructedInterpolants, 0 QuantifiedInterpolants, 2396 SizeOfPredicates, 37 NumberOfNonLiveVariables, 1479 ConjunctsInSsa, 69 ConjunctsInUnsatCore, 37 InterpolantComputations, 8 PerfectInterpolantSequences, 1052/2149 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-13 12:44:33,325 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48c8fefe-d2ae-4544-960f-f04b8300c433/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE