./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_77-tricky_address4_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a90048-4df6-4a46-bbb0-f4a39321bea2/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a90048-4df6-4a46-bbb0-f4a39321bea2/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a90048-4df6-4a46-bbb0-f4a39321bea2/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a90048-4df6-4a46-bbb0-f4a39321bea2/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_77-tricky_address4_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a90048-4df6-4a46-bbb0-f4a39321bea2/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a90048-4df6-4a46-bbb0-f4a39321bea2/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 dce9d71ca8bbe247a74e6b2653e5cdb882c6b8b5d902edf534df70d90ee806fe --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:46:05,772 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:46:05,900 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a90048-4df6-4a46-bbb0-f4a39321bea2/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 22:46:05,913 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:46:05,914 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:46:05,959 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:46:05,960 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:46:05,961 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:46:05,962 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:46:05,968 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:46:05,969 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:46:05,970 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:46:05,970 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:46:05,972 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:46:05,973 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:46:05,973 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:46:05,974 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:46:05,974 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:46:05,975 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:46:05,975 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:46:05,976 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:46:05,976 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:46:05,977 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 22:46:05,977 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:46:05,978 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:46:05,978 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:46:05,979 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:46:05,980 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:46:05,980 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:46:05,981 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:46:05,982 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:46:05,982 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:46:05,983 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:46:05,983 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:46:05,983 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:46:05,984 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:46:05,984 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:46:05,984 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:46:05,984 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:46:05,985 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:46:05,985 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:46:05,985 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a90048-4df6-4a46-bbb0-f4a39321bea2/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a90048-4df6-4a46-bbb0-f4a39321bea2/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dce9d71ca8bbe247a74e6b2653e5cdb882c6b8b5d902edf534df70d90ee806fe [2023-11-06 22:46:06,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:46:06,327 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:46:06,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:46:06,335 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:46:06,336 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:46:06,337 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a90048-4df6-4a46-bbb0-f4a39321bea2/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/goblint-regression/28-race_reach_77-tricky_address4_racing.i [2023-11-06 22:46:09,667 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:46:10,077 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:46:10,078 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a90048-4df6-4a46-bbb0-f4a39321bea2/sv-benchmarks/c/goblint-regression/28-race_reach_77-tricky_address4_racing.i [2023-11-06 22:46:10,098 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a90048-4df6-4a46-bbb0-f4a39321bea2/bin/uautomizer-verify-WvqO1wxjHP/data/5d914cd80/2e56c1c8ae5741779634d28f52d578dc/FLAGdccbd6720 [2023-11-06 22:46:10,113 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a90048-4df6-4a46-bbb0-f4a39321bea2/bin/uautomizer-verify-WvqO1wxjHP/data/5d914cd80/2e56c1c8ae5741779634d28f52d578dc [2023-11-06 22:46:10,116 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:46:10,118 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:46:10,119 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:46:10,120 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:46:10,125 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:46:10,126 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:46:10" (1/1) ... [2023-11-06 22:46:10,127 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12f2b71e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:10, skipping insertion in model container [2023-11-06 22:46:10,128 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:46:10" (1/1) ... [2023-11-06 22:46:10,190 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:46:10,752 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:46:10,785 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:46:10,877 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:46:10,969 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:46:10,970 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:10 WrapperNode [2023-11-06 22:46:10,970 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:46:10,971 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:46:10,972 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:46:10,972 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:46:10,981 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:10" (1/1) ... [2023-11-06 22:46:11,014 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:10" (1/1) ... [2023-11-06 22:46:11,046 INFO L138 Inliner]: procedures = 270, calls = 42, calls flagged for inlining = 7, calls inlined = 8, statements flattened = 217 [2023-11-06 22:46:11,046 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:46:11,047 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:46:11,047 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:46:11,048 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:46:11,059 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:10" (1/1) ... [2023-11-06 22:46:11,059 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:10" (1/1) ... [2023-11-06 22:46:11,073 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:10" (1/1) ... [2023-11-06 22:46:11,080 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:10" (1/1) ... [2023-11-06 22:46:11,090 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:10" (1/1) ... [2023-11-06 22:46:11,107 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:10" (1/1) ... [2023-11-06 22:46:11,113 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:10" (1/1) ... [2023-11-06 22:46:11,115 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:10" (1/1) ... [2023-11-06 22:46:11,119 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:46:11,120 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:46:11,120 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:46:11,120 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:46:11,121 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:10" (1/1) ... [2023-11-06 22:46:11,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:46:11,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a90048-4df6-4a46-bbb0-f4a39321bea2/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:11,155 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a90048-4df6-4a46-bbb0-f4a39321bea2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:46:11,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a90048-4df6-4a46-bbb0-f4a39321bea2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:46:11,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:46:11,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:46:11,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:46:11,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:46:11,193 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 22:46:11,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:46:11,193 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-06 22:46:11,194 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-06 22:46:11,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:46:11,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:46:11,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:46:11,197 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:46:11,374 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:46:11,376 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:46:11,702 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:46:11,714 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:46:11,714 INFO L302 CfgBuilder]: Removed 23 assume(true) statements. [2023-11-06 22:46:11,717 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:46:11 BoogieIcfgContainer [2023-11-06 22:46:11,717 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:46:11,721 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:46:11,721 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:46:11,724 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:46:11,729 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:46:10" (1/3) ... [2023-11-06 22:46:11,730 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cc83759 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:46:11, skipping insertion in model container [2023-11-06 22:46:11,730 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:10" (2/3) ... [2023-11-06 22:46:11,731 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cc83759 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:46:11, skipping insertion in model container [2023-11-06 22:46:11,731 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:46:11" (3/3) ... [2023-11-06 22:46:11,732 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_77-tricky_address4_racing.i [2023-11-06 22:46:11,742 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:46:11,754 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:46:11,755 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-06 22:46:11,755 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:46:11,899 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-06 22:46:11,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 213 places, 243 transitions, 493 flow [2023-11-06 22:46:12,063 INFO L124 PetriNetUnfolderBase]: 48/330 cut-off events. [2023-11-06 22:46:12,064 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:46:12,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 330 events. 48/330 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1117 event pairs, 0 based on Foata normal form. 0/259 useless extension candidates. Maximal degree in co-relation 187. Up to 8 conditions per place. [2023-11-06 22:46:12,083 INFO L82 GeneralOperation]: Start removeDead. Operand has 213 places, 243 transitions, 493 flow [2023-11-06 22:46:12,093 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 211 places, 240 transitions, 487 flow [2023-11-06 22:46:12,097 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:46:12,122 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 211 places, 240 transitions, 487 flow [2023-11-06 22:46:12,126 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 211 places, 240 transitions, 487 flow [2023-11-06 22:46:12,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 211 places, 240 transitions, 487 flow [2023-11-06 22:46:12,260 INFO L124 PetriNetUnfolderBase]: 47/327 cut-off events. [2023-11-06 22:46:12,262 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:46:12,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 327 events. 47/327 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1114 event pairs, 0 based on Foata normal form. 0/257 useless extension candidates. Maximal degree in co-relation 187. Up to 8 conditions per place. [2023-11-06 22:46:12,287 INFO L119 LiptonReduction]: Number of co-enabled transitions 17654 [2023-11-06 22:46:17,825 INFO L134 LiptonReduction]: Checked pairs total: 28709 [2023-11-06 22:46:17,825 INFO L136 LiptonReduction]: Total number of compositions: 237 [2023-11-06 22:46:17,842 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:46:17,849 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@317bffd1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:46:17,849 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2023-11-06 22:46:17,851 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:46:17,852 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-06 22:46:17,852 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:46:17,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:46:17,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:46:17,853 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 22:46:17,859 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:17,859 INFO L85 PathProgramCache]: Analyzing trace with hash 30820, now seen corresponding path program 1 times [2023-11-06 22:46:17,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:17,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433328473] [2023-11-06 22:46:17,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:17,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:17,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:18,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:46:18,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:46:18,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433328473] [2023-11-06 22:46:18,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433328473] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:46:18,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:46:18,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:46:18,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520087616] [2023-11-06 22:46:18,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:46:18,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:46:18,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:46:18,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:46:18,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:46:18,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 480 [2023-11-06 22:46:18,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 82 transitions, 171 flow. Second operand has 3 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 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) [2023-11-06 22:46:18,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:46:18,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 480 [2023-11-06 22:46:18,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:46:18,572 INFO L124 PetriNetUnfolderBase]: 501/1049 cut-off events. [2023-11-06 22:46:18,572 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:46:18,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2040 conditions, 1049 events. 501/1049 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5713 event pairs, 456 based on Foata normal form. 113/844 useless extension candidates. Maximal degree in co-relation 1969. Up to 985 conditions per place. [2023-11-06 22:46:18,583 INFO L140 encePairwiseOnDemand]: 451/480 looper letters, 50 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2023-11-06 22:46:18,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 58 transitions, 227 flow [2023-11-06 22:46:18,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:46:18,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:46:18,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 692 transitions. [2023-11-06 22:46:18,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48055555555555557 [2023-11-06 22:46:18,604 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 692 transitions. [2023-11-06 22:46:18,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 692 transitions. [2023-11-06 22:46:18,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:46:18,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 692 transitions. [2023-11-06 22:46:18,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 230.66666666666666) internal successors, (692), 3 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:46:18,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 480.0) internal successors, (1920), 4 states have internal predecessors, (1920), 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) [2023-11-06 22:46:18,629 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 480.0) internal successors, (1920), 4 states have internal predecessors, (1920), 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) [2023-11-06 22:46:18,631 INFO L175 Difference]: Start difference. First operand has 60 places, 82 transitions, 171 flow. Second operand 3 states and 692 transitions. [2023-11-06 22:46:18,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 58 transitions, 227 flow [2023-11-06 22:46:18,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 58 transitions, 227 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:46:18,639 INFO L231 Difference]: Finished difference. Result has 60 places, 58 transitions, 135 flow [2023-11-06 22:46:18,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=60, PETRI_TRANSITIONS=58} [2023-11-06 22:46:18,645 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 0 predicate places. [2023-11-06 22:46:18,646 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 58 transitions, 135 flow [2023-11-06 22:46:18,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 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) [2023-11-06 22:46:18,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:46:18,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:46:18,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:46:18,648 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 22:46:18,648 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:18,649 INFO L85 PathProgramCache]: Analyzing trace with hash 957596, now seen corresponding path program 1 times [2023-11-06 22:46:18,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:18,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421248115] [2023-11-06 22:46:18,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:18,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:18,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:18,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:46:18,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:46:18,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421248115] [2023-11-06 22:46:18,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421248115] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:46:18,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:46:18,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:46:18,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543921522] [2023-11-06 22:46:18,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:46:18,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:46:18,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:46:18,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:46:18,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:46:18,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 480 [2023-11-06 22:46:18,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 58 transitions, 135 flow. Second operand has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 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) [2023-11-06 22:46:18,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:46:18,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 480 [2023-11-06 22:46:18,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:46:18,997 INFO L124 PetriNetUnfolderBase]: 501/1048 cut-off events. [2023-11-06 22:46:18,997 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:46:18,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2045 conditions, 1048 events. 501/1048 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5736 event pairs, 456 based on Foata normal form. 0/731 useless extension candidates. Maximal degree in co-relation 2033. Up to 982 conditions per place. [2023-11-06 22:46:19,007 INFO L140 encePairwiseOnDemand]: 477/480 looper letters, 49 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2023-11-06 22:46:19,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 57 transitions, 233 flow [2023-11-06 22:46:19,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:46:19,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:46:19,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 663 transitions. [2023-11-06 22:46:19,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46041666666666664 [2023-11-06 22:46:19,011 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 663 transitions. [2023-11-06 22:46:19,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 663 transitions. [2023-11-06 22:46:19,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:46:19,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 663 transitions. [2023-11-06 22:46:19,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 221.0) internal successors, (663), 3 states have internal predecessors, (663), 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) [2023-11-06 22:46:19,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 480.0) internal successors, (1920), 4 states have internal predecessors, (1920), 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) [2023-11-06 22:46:19,021 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 480.0) internal successors, (1920), 4 states have internal predecessors, (1920), 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) [2023-11-06 22:46:19,022 INFO L175 Difference]: Start difference. First operand has 60 places, 58 transitions, 135 flow. Second operand 3 states and 663 transitions. [2023-11-06 22:46:19,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 57 transitions, 233 flow [2023-11-06 22:46:19,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 57 transitions, 229 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 22:46:19,026 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 131 flow [2023-11-06 22:46:19,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2023-11-06 22:46:19,027 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 0 predicate places. [2023-11-06 22:46:19,028 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 131 flow [2023-11-06 22:46:19,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 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) [2023-11-06 22:46:19,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:46:19,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:46:19,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:46:19,030 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 22:46:19,030 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:19,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1534174658, now seen corresponding path program 1 times [2023-11-06 22:46:19,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:19,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556232889] [2023-11-06 22:46:19,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:19,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:19,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:19,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:46:19,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:46:19,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556232889] [2023-11-06 22:46:19,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556232889] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:46:19,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711850023] [2023-11-06 22:46:19,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:19,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:46:19,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a90048-4df6-4a46-bbb0-f4a39321bea2/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:19,145 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a90048-4df6-4a46-bbb0-f4a39321bea2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:46:19,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a90048-4df6-4a46-bbb0-f4a39321bea2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:46:19,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:19,253 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:46:19,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:46:19,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:46:19,330 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:46:19,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:46:19,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711850023] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:46:19,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:46:19,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-06 22:46:19,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523441935] [2023-11-06 22:46:19,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:46:19,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:46:19,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:46:19,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:46:19,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:46:19,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 480 [2023-11-06 22:46:19,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 131 flow. Second operand has 7 states, 7 states have (on average 204.57142857142858) internal successors, (1432), 7 states have internal predecessors, (1432), 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) [2023-11-06 22:46:19,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:46:19,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 480 [2023-11-06 22:46:19,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:46:19,708 INFO L124 PetriNetUnfolderBase]: 501/1051 cut-off events. [2023-11-06 22:46:19,709 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:46:19,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2054 conditions, 1051 events. 501/1051 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5694 event pairs, 456 based on Foata normal form. 3/738 useless extension candidates. Maximal degree in co-relation 2027. Up to 984 conditions per place. [2023-11-06 22:46:19,718 INFO L140 encePairwiseOnDemand]: 477/480 looper letters, 49 selfloop transitions, 5 changer transitions 0/60 dead transitions. [2023-11-06 22:46:19,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 60 transitions, 251 flow [2023-11-06 22:46:19,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:46:19,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:46:19,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1275 transitions. [2023-11-06 22:46:19,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4427083333333333 [2023-11-06 22:46:19,725 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1275 transitions. [2023-11-06 22:46:19,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1275 transitions. [2023-11-06 22:46:19,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:46:19,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1275 transitions. [2023-11-06 22:46:19,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 212.5) internal successors, (1275), 6 states have internal predecessors, (1275), 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) [2023-11-06 22:46:19,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 480.0) internal successors, (3360), 7 states have internal predecessors, (3360), 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) [2023-11-06 22:46:19,742 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 480.0) internal successors, (3360), 7 states have internal predecessors, (3360), 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) [2023-11-06 22:46:19,742 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 131 flow. Second operand 6 states and 1275 transitions. [2023-11-06 22:46:19,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 60 transitions, 251 flow [2023-11-06 22:46:19,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 60 transitions, 247 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:46:19,747 INFO L231 Difference]: Finished difference. Result has 66 places, 60 transitions, 163 flow [2023-11-06 22:46:19,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=163, PETRI_PLACES=66, PETRI_TRANSITIONS=60} [2023-11-06 22:46:19,751 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 6 predicate places. [2023-11-06 22:46:19,751 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 60 transitions, 163 flow [2023-11-06 22:46:19,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 204.57142857142858) internal successors, (1432), 7 states have internal predecessors, (1432), 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) [2023-11-06 22:46:19,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:46:19,753 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2023-11-06 22:46:19,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a90048-4df6-4a46-bbb0-f4a39321bea2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:19,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a90048-4df6-4a46-bbb0-f4a39321bea2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:46:19,959 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 22:46:19,960 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:19,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1023968394, now seen corresponding path program 2 times [2023-11-06 22:46:19,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:19,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145026082] [2023-11-06 22:46:19,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:19,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:19,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:20,125 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:46:20,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:46:20,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145026082] [2023-11-06 22:46:20,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145026082] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:46:20,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:46:20,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:46:20,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439734341] [2023-11-06 22:46:20,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:46:20,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:46:20,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:46:20,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:46:20,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:46:20,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 480 [2023-11-06 22:46:20,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 163 flow. Second operand has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 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) [2023-11-06 22:46:20,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:46:20,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 480 [2023-11-06 22:46:20,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:46:20,391 INFO L124 PetriNetUnfolderBase]: 440/971 cut-off events. [2023-11-06 22:46:20,391 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:46:20,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1889 conditions, 971 events. 440/971 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 5549 event pairs, 0 based on Foata normal form. 0/715 useless extension candidates. Maximal degree in co-relation 1855. Up to 868 conditions per place. [2023-11-06 22:46:20,400 INFO L140 encePairwiseOnDemand]: 475/480 looper letters, 70 selfloop transitions, 2 changer transitions 0/78 dead transitions. [2023-11-06 22:46:20,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 78 transitions, 343 flow [2023-11-06 22:46:20,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:46:20,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:46:20,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 683 transitions. [2023-11-06 22:46:20,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47430555555555554 [2023-11-06 22:46:20,404 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 683 transitions. [2023-11-06 22:46:20,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 683 transitions. [2023-11-06 22:46:20,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:46:20,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 683 transitions. [2023-11-06 22:46:20,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 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) [2023-11-06 22:46:20,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 480.0) internal successors, (1920), 4 states have internal predecessors, (1920), 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) [2023-11-06 22:46:20,414 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 480.0) internal successors, (1920), 4 states have internal predecessors, (1920), 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) [2023-11-06 22:46:20,415 INFO L175 Difference]: Start difference. First operand has 66 places, 60 transitions, 163 flow. Second operand 3 states and 683 transitions. [2023-11-06 22:46:20,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 78 transitions, 343 flow [2023-11-06 22:46:20,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 78 transitions, 329 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-06 22:46:20,422 INFO L231 Difference]: Finished difference. Result has 66 places, 58 transitions, 153 flow [2023-11-06 22:46:20,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=66, PETRI_TRANSITIONS=58} [2023-11-06 22:46:20,425 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 6 predicate places. [2023-11-06 22:46:20,425 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 58 transitions, 153 flow [2023-11-06 22:46:20,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 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) [2023-11-06 22:46:20,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:46:20,427 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-11-06 22:46:20,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:46:20,427 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 22:46:20,429 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:20,433 INFO L85 PathProgramCache]: Analyzing trace with hash -486054568, now seen corresponding path program 1 times [2023-11-06 22:46:20,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:20,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546425681] [2023-11-06 22:46:20,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:20,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:20,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:20,617 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:46:20,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:46:20,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546425681] [2023-11-06 22:46:20,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546425681] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:46:20,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367128477] [2023-11-06 22:46:20,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:20,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:46:20,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a90048-4df6-4a46-bbb0-f4a39321bea2/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:20,620 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a90048-4df6-4a46-bbb0-f4a39321bea2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:46:20,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a90048-4df6-4a46-bbb0-f4a39321bea2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:46:20,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:20,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:46:20,746 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:46:20,768 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:46:20,768 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:46:20,837 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:46:20,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367128477] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:46:20,838 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:46:20,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-06 22:46:20,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511711799] [2023-11-06 22:46:20,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:46:20,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:46:20,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:46:20,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:46:20,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:46:20,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 480 [2023-11-06 22:46:20,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 58 transitions, 153 flow. Second operand has 13 states, 13 states have (on average 204.30769230769232) internal successors, (2656), 13 states have internal predecessors, (2656), 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) [2023-11-06 22:46:20,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:46:20,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 480 [2023-11-06 22:46:20,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:46:21,229 INFO L124 PetriNetUnfolderBase]: 460/953 cut-off events. [2023-11-06 22:46:21,230 INFO L125 PetriNetUnfolderBase]: For 114/114 co-relation queries the response was YES. [2023-11-06 22:46:21,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1945 conditions, 953 events. 460/953 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4906 event pairs, 418 based on Foata normal form. 6/717 useless extension candidates. Maximal degree in co-relation 1892. Up to 886 conditions per place. [2023-11-06 22:46:21,239 INFO L140 encePairwiseOnDemand]: 477/480 looper letters, 47 selfloop transitions, 11 changer transitions 0/64 dead transitions. [2023-11-06 22:46:21,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 64 transitions, 305 flow [2023-11-06 22:46:21,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:46:21,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:46:21,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2500 transitions. [2023-11-06 22:46:21,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4340277777777778 [2023-11-06 22:46:21,251 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2500 transitions. [2023-11-06 22:46:21,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2500 transitions. [2023-11-06 22:46:21,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:46:21,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2500 transitions. [2023-11-06 22:46:21,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 208.33333333333334) internal successors, (2500), 12 states have internal predecessors, (2500), 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) [2023-11-06 22:46:21,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 480.0) internal successors, (6240), 13 states have internal predecessors, (6240), 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) [2023-11-06 22:46:21,280 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 480.0) internal successors, (6240), 13 states have internal predecessors, (6240), 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) [2023-11-06 22:46:21,281 INFO L175 Difference]: Start difference. First operand has 66 places, 58 transitions, 153 flow. Second operand 12 states and 2500 transitions. [2023-11-06 22:46:21,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 64 transitions, 305 flow [2023-11-06 22:46:21,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 64 transitions, 301 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:46:21,288 INFO L231 Difference]: Finished difference. Result has 81 places, 64 transitions, 233 flow [2023-11-06 22:46:21,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=233, PETRI_PLACES=81, PETRI_TRANSITIONS=64} [2023-11-06 22:46:21,291 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 21 predicate places. [2023-11-06 22:46:21,291 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 64 transitions, 233 flow [2023-11-06 22:46:21,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 204.30769230769232) internal successors, (2656), 13 states have internal predecessors, (2656), 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) [2023-11-06 22:46:21,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:46:21,294 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-11-06 22:46:21,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a90048-4df6-4a46-bbb0-f4a39321bea2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:21,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a90048-4df6-4a46-bbb0-f4a39321bea2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:46:21,500 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 22:46:21,501 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:21,501 INFO L85 PathProgramCache]: Analyzing trace with hash -194334632, now seen corresponding path program 2 times [2023-11-06 22:46:21,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:21,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593342907] [2023-11-06 22:46:21,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:21,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:21,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:46:21,551 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:46:21,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:46:21,596 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:46:21,596 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:46:21,597 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2023-11-06 22:46:21,600 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 23 remaining) [2023-11-06 22:46:21,601 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 23 remaining) [2023-11-06 22:46:21,601 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 23 remaining) [2023-11-06 22:46:21,601 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 23 remaining) [2023-11-06 22:46:21,602 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 23 remaining) [2023-11-06 22:46:21,602 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 23 remaining) [2023-11-06 22:46:21,602 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 23 remaining) [2023-11-06 22:46:21,603 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 23 remaining) [2023-11-06 22:46:21,603 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 23 remaining) [2023-11-06 22:46:21,603 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 23 remaining) [2023-11-06 22:46:21,603 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 23 remaining) [2023-11-06 22:46:21,604 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 23 remaining) [2023-11-06 22:46:21,604 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 23 remaining) [2023-11-06 22:46:21,604 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 23 remaining) [2023-11-06 22:46:21,605 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 23 remaining) [2023-11-06 22:46:21,605 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 23 remaining) [2023-11-06 22:46:21,605 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 23 remaining) [2023-11-06 22:46:21,606 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 23 remaining) [2023-11-06 22:46:21,606 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 23 remaining) [2023-11-06 22:46:21,606 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 23 remaining) [2023-11-06 22:46:21,607 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 23 remaining) [2023-11-06 22:46:21,607 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 23 remaining) [2023-11-06 22:46:21,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:46:21,608 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2023-11-06 22:46:21,611 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:46:21,611 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-06 22:46:21,687 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-06 22:46:21,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 293 places, 336 transitions, 688 flow [2023-11-06 22:46:21,824 INFO L124 PetriNetUnfolderBase]: 80/548 cut-off events. [2023-11-06 22:46:21,824 INFO L125 PetriNetUnfolderBase]: For 6/7 co-relation queries the response was YES. [2023-11-06 22:46:21,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 560 conditions, 548 events. 80/548 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2335 event pairs, 0 based on Foata normal form. 0/428 useless extension candidates. Maximal degree in co-relation 332. Up to 12 conditions per place. [2023-11-06 22:46:21,830 INFO L82 GeneralOperation]: Start removeDead. Operand has 293 places, 336 transitions, 688 flow [2023-11-06 22:46:21,840 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 293 places, 336 transitions, 688 flow [2023-11-06 22:46:21,840 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:46:21,841 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 293 places, 336 transitions, 688 flow [2023-11-06 22:46:21,841 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 293 places, 336 transitions, 688 flow [2023-11-06 22:46:21,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 293 places, 336 transitions, 688 flow [2023-11-06 22:46:21,942 INFO L124 PetriNetUnfolderBase]: 80/548 cut-off events. [2023-11-06 22:46:21,942 INFO L125 PetriNetUnfolderBase]: For 6/7 co-relation queries the response was YES. [2023-11-06 22:46:21,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 560 conditions, 548 events. 80/548 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2335 event pairs, 0 based on Foata normal form. 0/428 useless extension candidates. Maximal degree in co-relation 332. Up to 12 conditions per place. [2023-11-06 22:46:21,987 INFO L119 LiptonReduction]: Number of co-enabled transitions 55328 [2023-11-06 22:46:28,523 INFO L134 LiptonReduction]: Checked pairs total: 92804 [2023-11-06 22:46:28,523 INFO L136 LiptonReduction]: Total number of compositions: 326 [2023-11-06 22:46:28,526 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:46:28,532 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@317bffd1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:46:28,532 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2023-11-06 22:46:28,534 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:46:28,534 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-06 22:46:28,534 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:46:28,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:46:28,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:46:28,535 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-06 22:46:28,535 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:28,536 INFO L85 PathProgramCache]: Analyzing trace with hash 54810, now seen corresponding path program 1 times [2023-11-06 22:46:28,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:28,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570596656] [2023-11-06 22:46:28,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:28,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:28,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:28,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:46:28,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:46:28,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570596656] [2023-11-06 22:46:28,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570596656] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:46:28,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:46:28,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:46:28,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009192188] [2023-11-06 22:46:28,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:46:28,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:46:28,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:46:28,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:46:28,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:46:28,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 662 [2023-11-06 22:46:28,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 121 transitions, 258 flow. Second operand has 3 states, 3 states have (on average 281.6666666666667) internal successors, (845), 3 states have internal predecessors, (845), 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) [2023-11-06 22:46:28,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:46:28,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 662 [2023-11-06 22:46:28,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:46:32,726 INFO L124 PetriNetUnfolderBase]: 19249/29724 cut-off events. [2023-11-06 22:46:32,726 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2023-11-06 22:46:32,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58294 conditions, 29724 events. 19249/29724 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 1066. Compared 211706 event pairs, 18264 based on Foata normal form. 3746/24642 useless extension candidates. Maximal degree in co-relation 34888. Up to 28466 conditions per place. [2023-11-06 22:46:32,970 INFO L140 encePairwiseOnDemand]: 620/662 looper letters, 71 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2023-11-06 22:46:32,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 84 transitions, 330 flow [2023-11-06 22:46:32,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:46:32,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:46:32,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 957 transitions. [2023-11-06 22:46:32,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4818731117824773 [2023-11-06 22:46:32,976 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 957 transitions. [2023-11-06 22:46:32,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 957 transitions. [2023-11-06 22:46:32,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:46:32,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 957 transitions. [2023-11-06 22:46:32,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 319.0) internal successors, (957), 3 states have internal predecessors, (957), 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) [2023-11-06 22:46:32,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 662.0) internal successors, (2648), 4 states have internal predecessors, (2648), 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) [2023-11-06 22:46:32,987 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 662.0) internal successors, (2648), 4 states have internal predecessors, (2648), 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) [2023-11-06 22:46:32,988 INFO L175 Difference]: Start difference. First operand has 87 places, 121 transitions, 258 flow. Second operand 3 states and 957 transitions. [2023-11-06 22:46:32,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 84 transitions, 330 flow [2023-11-06 22:46:32,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 84 transitions, 330 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:46:32,993 INFO L231 Difference]: Finished difference. Result has 85 places, 84 transitions, 196 flow [2023-11-06 22:46:32,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=85, PETRI_TRANSITIONS=84} [2023-11-06 22:46:32,996 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -2 predicate places. [2023-11-06 22:46:32,996 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 84 transitions, 196 flow [2023-11-06 22:46:32,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 281.6666666666667) internal successors, (845), 3 states have internal predecessors, (845), 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) [2023-11-06 22:46:32,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:46:32,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:46:32,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:46:32,998 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-06 22:46:32,999 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:32,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1702243, now seen corresponding path program 1 times [2023-11-06 22:46:32,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:32,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765108229] [2023-11-06 22:46:33,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:33,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:33,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:33,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:46:33,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:46:33,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765108229] [2023-11-06 22:46:33,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765108229] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:46:33,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840088184] [2023-11-06 22:46:33,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:33,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:46:33,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a90048-4df6-4a46-bbb0-f4a39321bea2/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:33,056 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a90048-4df6-4a46-bbb0-f4a39321bea2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:46:33,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a90048-4df6-4a46-bbb0-f4a39321bea2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:46:33,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:33,161 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:46:33,162 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:46:33,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:46:33,283 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:46:33,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840088184] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:46:33,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:46:33,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-06 22:46:33,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662875949] [2023-11-06 22:46:33,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:46:33,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:46:33,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:46:33,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:46:33,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:46:33,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 662 [2023-11-06 22:46:33,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 84 transitions, 196 flow. Second operand has 4 states, 4 states have (on average 281.75) internal successors, (1127), 4 states have internal predecessors, (1127), 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) [2023-11-06 22:46:33,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:46:33,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 662 [2023-11-06 22:46:33,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:46:36,958 INFO L124 PetriNetUnfolderBase]: 19249/29723 cut-off events. [2023-11-06 22:46:36,958 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2023-11-06 22:46:37,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58299 conditions, 29723 events. 19249/29723 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 1066. Compared 211634 event pairs, 18264 based on Foata normal form. 0/20896 useless extension candidates. Maximal degree in co-relation 58286. Up to 28463 conditions per place. [2023-11-06 22:46:37,143 INFO L140 encePairwiseOnDemand]: 658/662 looper letters, 69 selfloop transitions, 3 changer transitions 0/83 dead transitions. [2023-11-06 22:46:37,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 83 transitions, 336 flow [2023-11-06 22:46:37,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:46:37,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:46:37,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1197 transitions. [2023-11-06 22:46:37,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520392749244713 [2023-11-06 22:46:37,151 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1197 transitions. [2023-11-06 22:46:37,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1197 transitions. [2023-11-06 22:46:37,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:46:37,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1197 transitions. [2023-11-06 22:46:37,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 299.25) internal successors, (1197), 4 states have internal predecessors, (1197), 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) [2023-11-06 22:46:37,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 662.0) internal successors, (3310), 5 states have internal predecessors, (3310), 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) [2023-11-06 22:46:37,164 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 662.0) internal successors, (3310), 5 states have internal predecessors, (3310), 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) [2023-11-06 22:46:37,164 INFO L175 Difference]: Start difference. First operand has 85 places, 84 transitions, 196 flow. Second operand 4 states and 1197 transitions. [2023-11-06 22:46:37,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 83 transitions, 336 flow [2023-11-06 22:46:37,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 83 transitions, 332 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 22:46:37,171 INFO L231 Difference]: Finished difference. Result has 86 places, 83 transitions, 194 flow [2023-11-06 22:46:37,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=194, PETRI_PLACES=86, PETRI_TRANSITIONS=83} [2023-11-06 22:46:37,174 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -1 predicate places. [2023-11-06 22:46:37,174 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 83 transitions, 194 flow [2023-11-06 22:46:37,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 281.75) internal successors, (1127), 4 states have internal predecessors, (1127), 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) [2023-11-06 22:46:37,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:46:37,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:46:37,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a90048-4df6-4a46-bbb0-f4a39321bea2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:37,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a90048-4df6-4a46-bbb0-f4a39321bea2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-06 22:46:37,382 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-06 22:46:37,383 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:37,383 INFO L85 PathProgramCache]: Analyzing trace with hash 219704150, now seen corresponding path program 1 times [2023-11-06 22:46:37,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:37,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936982994] [2023-11-06 22:46:37,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:37,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:37,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:37,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:46:37,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:46:37,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936982994] [2023-11-06 22:46:37,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936982994] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:46:37,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015182650] [2023-11-06 22:46:37,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:37,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:46:37,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a90048-4df6-4a46-bbb0-f4a39321bea2/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:37,458 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a90048-4df6-4a46-bbb0-f4a39321bea2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:46:37,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a90048-4df6-4a46-bbb0-f4a39321bea2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:46:37,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:37,552 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:46:37,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:46:37,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:46:37,570 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:46:37,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:46:37,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015182650] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:46:37,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:46:37,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-06 22:46:37,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372880321] [2023-11-06 22:46:37,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:46:37,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:46:37,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:46:37,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:46:37,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:46:37,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 662 [2023-11-06 22:46:37,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 83 transitions, 194 flow. Second operand has 7 states, 7 states have (on average 281.57142857142856) internal successors, (1971), 7 states have internal predecessors, (1971), 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) [2023-11-06 22:46:37,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:46:37,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 662 [2023-11-06 22:46:37,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:46:40,432 INFO L124 PetriNetUnfolderBase]: 19249/29726 cut-off events. [2023-11-06 22:46:40,432 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2023-11-06 22:46:40,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58309 conditions, 29726 events. 19249/29726 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 1066. Compared 211669 event pairs, 18264 based on Foata normal form. 3/20903 useless extension candidates. Maximal degree in co-relation 58280. Up to 28465 conditions per place. [2023-11-06 22:46:40,580 INFO L140 encePairwiseOnDemand]: 659/662 looper letters, 70 selfloop transitions, 5 changer transitions 0/86 dead transitions. [2023-11-06 22:46:40,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 86 transitions, 356 flow [2023-11-06 22:46:40,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:46:40,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:46:40,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1758 transitions. [2023-11-06 22:46:40,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4425981873111782 [2023-11-06 22:46:40,588 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1758 transitions. [2023-11-06 22:46:40,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1758 transitions. [2023-11-06 22:46:40,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:46:40,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1758 transitions. [2023-11-06 22:46:40,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 293.0) internal successors, (1758), 6 states have internal predecessors, (1758), 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) [2023-11-06 22:46:40,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 662.0) internal successors, (4634), 7 states have internal predecessors, (4634), 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) [2023-11-06 22:46:40,605 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 662.0) internal successors, (4634), 7 states have internal predecessors, (4634), 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) [2023-11-06 22:46:40,605 INFO L175 Difference]: Start difference. First operand has 86 places, 83 transitions, 194 flow. Second operand 6 states and 1758 transitions. [2023-11-06 22:46:40,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 86 transitions, 356 flow [2023-11-06 22:46:40,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 86 transitions, 352 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:46:40,609 INFO L231 Difference]: Finished difference. Result has 92 places, 86 transitions, 226 flow [2023-11-06 22:46:40,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=226, PETRI_PLACES=92, PETRI_TRANSITIONS=86} [2023-11-06 22:46:40,610 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 5 predicate places. [2023-11-06 22:46:40,610 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 86 transitions, 226 flow [2023-11-06 22:46:40,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 281.57142857142856) internal successors, (1971), 7 states have internal predecessors, (1971), 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) [2023-11-06 22:46:40,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:46:40,612 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-11-06 22:46:40,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a90048-4df6-4a46-bbb0-f4a39321bea2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:40,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a90048-4df6-4a46-bbb0-f4a39321bea2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:46:40,818 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-06 22:46:40,819 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:40,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1912078645, now seen corresponding path program 1 times [2023-11-06 22:46:40,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:40,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175902188] [2023-11-06 22:46:40,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:40,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:40,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:40,873 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:46:40,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:46:40,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175902188] [2023-11-06 22:46:40,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175902188] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:46:40,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:46:40,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:46:40,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060394760] [2023-11-06 22:46:40,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:46:40,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:46:40,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:46:40,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:46:40,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:46:40,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 662 [2023-11-06 22:46:40,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 86 transitions, 226 flow. Second operand has 3 states, 3 states have (on average 283.0) internal successors, (849), 3 states have internal predecessors, (849), 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) [2023-11-06 22:46:40,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:46:40,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 662 [2023-11-06 22:46:40,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:46:43,664 INFO L124 PetriNetUnfolderBase]: 19029/29560 cut-off events. [2023-11-06 22:46:43,664 INFO L125 PetriNetUnfolderBase]: For 109/109 co-relation queries the response was YES. [2023-11-06 22:46:43,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58064 conditions, 29560 events. 19029/29560 cut-off events. For 109/109 co-relation queries the response was YES. Maximal size of possible extension queue 1065. Compared 213893 event pairs, 8778 based on Foata normal form. 0/20833 useless extension candidates. Maximal degree in co-relation 58028. Up to 28356 conditions per place. [2023-11-06 22:46:43,823 INFO L140 encePairwiseOnDemand]: 657/662 looper letters, 93 selfloop transitions, 2 changer transitions 0/106 dead transitions. [2023-11-06 22:46:43,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 106 transitions, 456 flow [2023-11-06 22:46:43,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:46:43,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:46:43,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 937 transitions. [2023-11-06 22:46:43,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47180261832829806 [2023-11-06 22:46:43,836 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 937 transitions. [2023-11-06 22:46:43,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 937 transitions. [2023-11-06 22:46:43,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:46:43,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 937 transitions. [2023-11-06 22:46:43,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 312.3333333333333) internal successors, (937), 3 states have internal predecessors, (937), 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) [2023-11-06 22:46:43,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 662.0) internal successors, (2648), 4 states have internal predecessors, (2648), 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) [2023-11-06 22:46:43,868 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 662.0) internal successors, (2648), 4 states have internal predecessors, (2648), 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) [2023-11-06 22:46:43,872 INFO L175 Difference]: Start difference. First operand has 92 places, 86 transitions, 226 flow. Second operand 3 states and 937 transitions. [2023-11-06 22:46:43,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 106 transitions, 456 flow [2023-11-06 22:46:43,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 106 transitions, 442 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-06 22:46:43,876 INFO L231 Difference]: Finished difference. Result has 94 places, 87 transitions, 228 flow [2023-11-06 22:46:43,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=228, PETRI_PLACES=94, PETRI_TRANSITIONS=87} [2023-11-06 22:46:43,887 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 7 predicate places. [2023-11-06 22:46:43,887 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 87 transitions, 228 flow [2023-11-06 22:46:43,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 283.0) internal successors, (849), 3 states have internal predecessors, (849), 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) [2023-11-06 22:46:43,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:46:43,888 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:46:43,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:46:43,889 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-06 22:46:43,889 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:43,889 INFO L85 PathProgramCache]: Analyzing trace with hash 2028451607, now seen corresponding path program 1 times [2023-11-06 22:46:43,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:43,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288891320] [2023-11-06 22:46:43,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:43,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:43,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:44,004 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:46:44,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:46:44,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288891320] [2023-11-06 22:46:44,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288891320] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:46:44,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652829799] [2023-11-06 22:46:44,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:44,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:46:44,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a90048-4df6-4a46-bbb0-f4a39321bea2/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:44,008 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a90048-4df6-4a46-bbb0-f4a39321bea2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:46:44,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a90048-4df6-4a46-bbb0-f4a39321bea2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:46:44,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:44,121 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:46:44,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:46:44,143 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:46:44,143 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:46:44,218 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:46:44,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652829799] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:46:44,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:46:44,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-06 22:46:44,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419187416] [2023-11-06 22:46:44,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:46:44,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:46:44,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:46:44,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:46:44,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:46:44,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 662 [2023-11-06 22:46:44,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 87 transitions, 228 flow. Second operand has 13 states, 13 states have (on average 281.53846153846155) internal successors, (3660), 13 states have internal predecessors, (3660), 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) [2023-11-06 22:46:44,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:46:44,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 662 [2023-11-06 22:46:44,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:46:47,408 INFO L124 PetriNetUnfolderBase]: 19428/29764 cut-off events. [2023-11-06 22:46:47,408 INFO L125 PetriNetUnfolderBase]: For 1027/1027 co-relation queries the response was YES. [2023-11-06 22:46:47,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59859 conditions, 29764 events. 19428/29764 cut-off events. For 1027/1027 co-relation queries the response was YES. Maximal size of possible extension queue 1059. Compared 208736 event pairs, 18228 based on Foata normal form. 6/21414 useless extension candidates. Maximal degree in co-relation 59804. Up to 28373 conditions per place. [2023-11-06 22:46:47,564 INFO L140 encePairwiseOnDemand]: 659/662 looper letters, 71 selfloop transitions, 11 changer transitions 0/93 dead transitions. [2023-11-06 22:46:47,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 93 transitions, 428 flow [2023-11-06 22:46:47,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:46:47,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:46:47,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3447 transitions. [2023-11-06 22:46:47,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43391238670694865 [2023-11-06 22:46:47,579 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3447 transitions. [2023-11-06 22:46:47,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3447 transitions. [2023-11-06 22:46:47,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:46:47,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3447 transitions. [2023-11-06 22:46:47,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 287.25) internal successors, (3447), 12 states have internal predecessors, (3447), 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) [2023-11-06 22:46:47,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 662.0) internal successors, (8606), 13 states have internal predecessors, (8606), 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) [2023-11-06 22:46:47,612 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 662.0) internal successors, (8606), 13 states have internal predecessors, (8606), 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) [2023-11-06 22:46:47,612 INFO L175 Difference]: Start difference. First operand has 94 places, 87 transitions, 228 flow. Second operand 12 states and 3447 transitions. [2023-11-06 22:46:47,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 93 transitions, 428 flow [2023-11-06 22:46:47,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 93 transitions, 426 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:46:47,617 INFO L231 Difference]: Finished difference. Result has 110 places, 93 transitions, 310 flow [2023-11-06 22:46:47,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=310, PETRI_PLACES=110, PETRI_TRANSITIONS=93} [2023-11-06 22:46:47,618 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 23 predicate places. [2023-11-06 22:46:47,619 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 93 transitions, 310 flow [2023-11-06 22:46:47,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 281.53846153846155) internal successors, (3660), 13 states have internal predecessors, (3660), 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) [2023-11-06 22:46:47,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:46:47,620 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:46:47,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a90048-4df6-4a46-bbb0-f4a39321bea2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:47,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a90048-4df6-4a46-bbb0-f4a39321bea2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-06 22:46:47,826 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-06 22:46:47,827 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:47,827 INFO L85 PathProgramCache]: Analyzing trace with hash -341051465, now seen corresponding path program 2 times [2023-11-06 22:46:47,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:47,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099391139] [2023-11-06 22:46:47,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:47,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:47,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:48,321 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 22:46:48,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:46:48,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099391139] [2023-11-06 22:46:48,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099391139] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:46:48,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:46:48,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:46:48,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410788709] [2023-11-06 22:46:48,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:46:48,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:46:48,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:46:48,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:46:48,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:46:48,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 662 [2023-11-06 22:46:48,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 93 transitions, 310 flow. Second operand has 6 states, 6 states have (on average 271.5) internal successors, (1629), 6 states have internal predecessors, (1629), 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) [2023-11-06 22:46:48,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:46:48,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 662 [2023-11-06 22:46:48,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:46:52,970 INFO L124 PetriNetUnfolderBase]: 21808/33945 cut-off events. [2023-11-06 22:46:52,970 INFO L125 PetriNetUnfolderBase]: For 1130/1130 co-relation queries the response was YES. [2023-11-06 22:46:53,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68549 conditions, 33945 events. 21808/33945 cut-off events. For 1130/1130 co-relation queries the response was YES. Maximal size of possible extension queue 1223. Compared 248965 event pairs, 13884 based on Foata normal form. 0/24627 useless extension candidates. Maximal degree in co-relation 68470. Up to 28007 conditions per place. [2023-11-06 22:46:53,183 INFO L140 encePairwiseOnDemand]: 650/662 looper letters, 161 selfloop transitions, 15 changer transitions 1/188 dead transitions. [2023-11-06 22:46:53,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 188 transitions, 884 flow [2023-11-06 22:46:53,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:46:53,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:46:53,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2058 transitions. [2023-11-06 22:46:53,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44410876132930516 [2023-11-06 22:46:53,194 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2058 transitions. [2023-11-06 22:46:53,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2058 transitions. [2023-11-06 22:46:53,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:46:53,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2058 transitions. [2023-11-06 22:46:53,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 294.0) internal successors, (2058), 7 states have internal predecessors, (2058), 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) [2023-11-06 22:46:53,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 662.0) internal successors, (5296), 8 states have internal predecessors, (5296), 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) [2023-11-06 22:46:53,214 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 662.0) internal successors, (5296), 8 states have internal predecessors, (5296), 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) [2023-11-06 22:46:53,214 INFO L175 Difference]: Start difference. First operand has 110 places, 93 transitions, 310 flow. Second operand 7 states and 2058 transitions. [2023-11-06 22:46:53,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 188 transitions, 884 flow [2023-11-06 22:46:53,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 188 transitions, 836 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-11-06 22:46:53,223 INFO L231 Difference]: Finished difference. Result has 115 places, 106 transitions, 364 flow [2023-11-06 22:46:53,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=364, PETRI_PLACES=115, PETRI_TRANSITIONS=106} [2023-11-06 22:46:53,225 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 28 predicate places. [2023-11-06 22:46:53,225 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 106 transitions, 364 flow [2023-11-06 22:46:53,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 271.5) internal successors, (1629), 6 states have internal predecessors, (1629), 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) [2023-11-06 22:46:53,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:46:53,226 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-06 22:46:53,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:46:53,227 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-06 22:46:53,227 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:53,227 INFO L85 PathProgramCache]: Analyzing trace with hash 635249883, now seen corresponding path program 1 times [2023-11-06 22:46:53,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:53,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764438043] [2023-11-06 22:46:53,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:53,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:53,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:53,295 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 22:46:53,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:46:53,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764438043] [2023-11-06 22:46:53,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764438043] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:46:53,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:46:53,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:46:53,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664472842] [2023-11-06 22:46:53,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:46:53,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:46:53,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:46:53,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:46:53,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:46:53,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 662 [2023-11-06 22:46:53,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 106 transitions, 364 flow. Second operand has 3 states, 3 states have (on average 284.0) internal successors, (852), 3 states have internal predecessors, (852), 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) [2023-11-06 22:46:53,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:46:53,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 662 [2023-11-06 22:46:53,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:46:56,941 INFO L124 PetriNetUnfolderBase]: 20561/33029 cut-off events. [2023-11-06 22:46:56,941 INFO L125 PetriNetUnfolderBase]: For 5953/5953 co-relation queries the response was YES. [2023-11-06 22:46:57,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71777 conditions, 33029 events. 20561/33029 cut-off events. For 5953/5953 co-relation queries the response was YES. Maximal size of possible extension queue 1044. Compared 257027 event pairs, 3120 based on Foata normal form. 0/24917 useless extension candidates. Maximal degree in co-relation 71717. Up to 26647 conditions per place. [2023-11-06 22:46:57,141 INFO L140 encePairwiseOnDemand]: 659/662 looper letters, 134 selfloop transitions, 2 changer transitions 0/147 dead transitions. [2023-11-06 22:46:57,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 147 transitions, 750 flow [2023-11-06 22:46:57,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:46:57,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:46:57,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 951 transitions. [2023-11-06 22:46:57,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4788519637462236 [2023-11-06 22:46:57,149 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 951 transitions. [2023-11-06 22:46:57,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 951 transitions. [2023-11-06 22:46:57,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:46:57,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 951 transitions. [2023-11-06 22:46:57,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 317.0) internal successors, (951), 3 states have internal predecessors, (951), 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) [2023-11-06 22:46:57,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 662.0) internal successors, (2648), 4 states have internal predecessors, (2648), 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) [2023-11-06 22:46:57,159 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 662.0) internal successors, (2648), 4 states have internal predecessors, (2648), 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) [2023-11-06 22:46:57,159 INFO L175 Difference]: Start difference. First operand has 115 places, 106 transitions, 364 flow. Second operand 3 states and 951 transitions. [2023-11-06 22:46:57,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 147 transitions, 750 flow [2023-11-06 22:46:57,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 147 transitions, 748 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:46:57,175 INFO L231 Difference]: Finished difference. Result has 115 places, 105 transitions, 362 flow [2023-11-06 22:46:57,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=362, PETRI_PLACES=115, PETRI_TRANSITIONS=105} [2023-11-06 22:46:57,176 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 28 predicate places. [2023-11-06 22:46:57,176 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 105 transitions, 362 flow [2023-11-06 22:46:57,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 284.0) internal successors, (852), 3 states have internal predecessors, (852), 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) [2023-11-06 22:46:57,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:46:57,177 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-06 22:46:57,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 22:46:57,178 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-06 22:46:57,178 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:57,178 INFO L85 PathProgramCache]: Analyzing trace with hash 635249885, now seen corresponding path program 1 times [2023-11-06 22:46:57,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:57,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013703512] [2023-11-06 22:46:57,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:57,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:57,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:57,237 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-06 22:46:57,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:46:57,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013703512] [2023-11-06 22:46:57,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013703512] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:46:57,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:46:57,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:46:57,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017357066] [2023-11-06 22:46:57,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:46:57,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:46:57,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:46:57,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:46:57,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:46:57,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 662 [2023-11-06 22:46:57,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 105 transitions, 362 flow. Second operand has 3 states, 3 states have (on average 283.0) internal successors, (849), 3 states have internal predecessors, (849), 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) [2023-11-06 22:46:57,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:46:57,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 662 [2023-11-06 22:46:57,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:47:00,978 INFO L124 PetriNetUnfolderBase]: 19671/31648 cut-off events. [2023-11-06 22:47:00,979 INFO L125 PetriNetUnfolderBase]: For 4907/4907 co-relation queries the response was YES. [2023-11-06 22:47:01,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68987 conditions, 31648 events. 19671/31648 cut-off events. For 4907/4907 co-relation queries the response was YES. Maximal size of possible extension queue 1003. Compared 244102 event pairs, 1519 based on Foata normal form. 0/24177 useless extension candidates. Maximal degree in co-relation 68927. Up to 27940 conditions per place. [2023-11-06 22:47:01,203 INFO L140 encePairwiseOnDemand]: 658/662 looper letters, 128 selfloop transitions, 7 changer transitions 0/146 dead transitions. [2023-11-06 22:47:01,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 146 transitions, 746 flow [2023-11-06 22:47:01,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:47:01,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:47:01,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 948 transitions. [2023-11-06 22:47:01,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4773413897280967 [2023-11-06 22:47:01,209 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 948 transitions. [2023-11-06 22:47:01,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 948 transitions. [2023-11-06 22:47:01,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:47:01,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 948 transitions. [2023-11-06 22:47:01,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 316.0) internal successors, (948), 3 states have internal predecessors, (948), 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) [2023-11-06 22:47:01,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 662.0) internal successors, (2648), 4 states have internal predecessors, (2648), 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) [2023-11-06 22:47:01,222 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 662.0) internal successors, (2648), 4 states have internal predecessors, (2648), 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) [2023-11-06 22:47:01,222 INFO L175 Difference]: Start difference. First operand has 115 places, 105 transitions, 362 flow. Second operand 3 states and 948 transitions. [2023-11-06 22:47:01,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 146 transitions, 746 flow [2023-11-06 22:47:01,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 146 transitions, 742 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:47:01,306 INFO L231 Difference]: Finished difference. Result has 114 places, 104 transitions, 368 flow [2023-11-06 22:47:01,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=368, PETRI_PLACES=114, PETRI_TRANSITIONS=104} [2023-11-06 22:47:01,307 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 27 predicate places. [2023-11-06 22:47:01,308 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 104 transitions, 368 flow [2023-11-06 22:47:01,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 283.0) internal successors, (849), 3 states have internal predecessors, (849), 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) [2023-11-06 22:47:01,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:47:01,309 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:47:01,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 22:47:01,309 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-06 22:47:01,310 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:01,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1744663653, now seen corresponding path program 1 times [2023-11-06 22:47:01,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:01,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770339335] [2023-11-06 22:47:01,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:01,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:01,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:01,419 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 22:47:01,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:01,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770339335] [2023-11-06 22:47:01,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770339335] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:47:01,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531930983] [2023-11-06 22:47:01,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:01,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:47:01,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a90048-4df6-4a46-bbb0-f4a39321bea2/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:47:01,426 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a90048-4df6-4a46-bbb0-f4a39321bea2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:47:01,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a90048-4df6-4a46-bbb0-f4a39321bea2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:47:01,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:01,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:47:01,572 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:47:01,597 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 22:47:01,597 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:47:01,619 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 22:47:01,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531930983] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:47:01,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:47:01,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-06 22:47:01,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116153737] [2023-11-06 22:47:01,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:47:01,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:47:01,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:01,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:47:01,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:47:01,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 662 [2023-11-06 22:47:01,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 104 transitions, 368 flow. Second operand has 7 states, 7 states have (on average 282.57142857142856) internal successors, (1978), 7 states have internal predecessors, (1978), 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) [2023-11-06 22:47:01,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:47:01,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 662 [2023-11-06 22:47:01,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:47:02,455 INFO L124 PetriNetUnfolderBase]: 2108/3902 cut-off events. [2023-11-06 22:47:02,455 INFO L125 PetriNetUnfolderBase]: For 2395/2395 co-relation queries the response was YES. [2023-11-06 22:47:02,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9908 conditions, 3902 events. 2108/3902 cut-off events. For 2395/2395 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 25645 event pairs, 254 based on Foata normal form. 458/3779 useless extension candidates. Maximal degree in co-relation 9848. Up to 2516 conditions per place. [2023-11-06 22:47:02,477 INFO L140 encePairwiseOnDemand]: 659/662 looper letters, 117 selfloop transitions, 3 changer transitions 0/127 dead transitions. [2023-11-06 22:47:02,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 127 transitions, 664 flow [2023-11-06 22:47:02,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:47:02,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:47:02,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1502 transitions. [2023-11-06 22:47:02,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45377643504531723 [2023-11-06 22:47:02,485 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1502 transitions. [2023-11-06 22:47:02,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1502 transitions. [2023-11-06 22:47:02,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:47:02,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1502 transitions. [2023-11-06 22:47:02,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 300.4) internal successors, (1502), 5 states have internal predecessors, (1502), 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) [2023-11-06 22:47:02,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 662.0) internal successors, (3972), 6 states have internal predecessors, (3972), 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) [2023-11-06 22:47:02,499 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 662.0) internal successors, (3972), 6 states have internal predecessors, (3972), 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) [2023-11-06 22:47:02,500 INFO L175 Difference]: Start difference. First operand has 114 places, 104 transitions, 368 flow. Second operand 5 states and 1502 transitions. [2023-11-06 22:47:02,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 127 transitions, 664 flow [2023-11-06 22:47:02,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 127 transitions, 656 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:47:02,511 INFO L231 Difference]: Finished difference. Result has 91 places, 71 transitions, 273 flow [2023-11-06 22:47:02,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=273, PETRI_PLACES=91, PETRI_TRANSITIONS=71} [2023-11-06 22:47:02,512 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 4 predicate places. [2023-11-06 22:47:02,513 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 71 transitions, 273 flow [2023-11-06 22:47:02,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 282.57142857142856) internal successors, (1978), 7 states have internal predecessors, (1978), 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) [2023-11-06 22:47:02,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:47:02,514 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1] [2023-11-06 22:47:02,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a90048-4df6-4a46-bbb0-f4a39321bea2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:47:02,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a90048-4df6-4a46-bbb0-f4a39321bea2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-06 22:47:02,720 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-06 22:47:02,720 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:02,721 INFO L85 PathProgramCache]: Analyzing trace with hash 589905043, now seen corresponding path program 1 times [2023-11-06 22:47:02,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:02,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025448175] [2023-11-06 22:47:02,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:02,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:02,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:47:02,759 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:47:02,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:47:02,799 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:47:02,799 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:47:02,799 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2023-11-06 22:47:02,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 29 remaining) [2023-11-06 22:47:02,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 29 remaining) [2023-11-06 22:47:02,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 29 remaining) [2023-11-06 22:47:02,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 29 remaining) [2023-11-06 22:47:02,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 29 remaining) [2023-11-06 22:47:02,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 29 remaining) [2023-11-06 22:47:02,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 29 remaining) [2023-11-06 22:47:02,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 29 remaining) [2023-11-06 22:47:02,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 29 remaining) [2023-11-06 22:47:02,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 29 remaining) [2023-11-06 22:47:02,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 29 remaining) [2023-11-06 22:47:02,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 29 remaining) [2023-11-06 22:47:02,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 29 remaining) [2023-11-06 22:47:02,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 29 remaining) [2023-11-06 22:47:02,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 29 remaining) [2023-11-06 22:47:02,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 29 remaining) [2023-11-06 22:47:02,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 29 remaining) [2023-11-06 22:47:02,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 29 remaining) [2023-11-06 22:47:02,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 29 remaining) [2023-11-06 22:47:02,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 29 remaining) [2023-11-06 22:47:02,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 29 remaining) [2023-11-06 22:47:02,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 29 remaining) [2023-11-06 22:47:02,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 29 remaining) [2023-11-06 22:47:02,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 29 remaining) [2023-11-06 22:47:02,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 29 remaining) [2023-11-06 22:47:02,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 29 remaining) [2023-11-06 22:47:02,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 29 remaining) [2023-11-06 22:47:02,807 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 29 remaining) [2023-11-06 22:47:02,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 22:47:02,807 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:47:02,808 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:47:02,808 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-06 22:47:02,874 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 22:47:02,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 373 places, 429 transitions, 885 flow [2023-11-06 22:47:03,063 INFO L124 PetriNetUnfolderBase]: 117/809 cut-off events. [2023-11-06 22:47:03,063 INFO L125 PetriNetUnfolderBase]: For 19/21 co-relation queries the response was YES. [2023-11-06 22:47:03,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 834 conditions, 809 events. 117/809 cut-off events. For 19/21 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3834 event pairs, 1 based on Foata normal form. 0/632 useless extension candidates. Maximal degree in co-relation 556. Up to 16 conditions per place. [2023-11-06 22:47:03,076 INFO L82 GeneralOperation]: Start removeDead. Operand has 373 places, 429 transitions, 885 flow [2023-11-06 22:47:03,089 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 373 places, 429 transitions, 885 flow [2023-11-06 22:47:03,090 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:47:03,090 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 373 places, 429 transitions, 885 flow [2023-11-06 22:47:03,090 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 373 places, 429 transitions, 885 flow [2023-11-06 22:47:03,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 373 places, 429 transitions, 885 flow [2023-11-06 22:47:03,278 INFO L124 PetriNetUnfolderBase]: 117/809 cut-off events. [2023-11-06 22:47:03,278 INFO L125 PetriNetUnfolderBase]: For 19/21 co-relation queries the response was YES. [2023-11-06 22:47:03,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 834 conditions, 809 events. 117/809 cut-off events. For 19/21 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3834 event pairs, 1 based on Foata normal form. 0/632 useless extension candidates. Maximal degree in co-relation 556. Up to 16 conditions per place. [2023-11-06 22:47:03,342 INFO L119 LiptonReduction]: Number of co-enabled transitions 108654 [2023-11-06 22:47:10,770 INFO L134 LiptonReduction]: Checked pairs total: 179121 [2023-11-06 22:47:10,771 INFO L136 LiptonReduction]: Total number of compositions: 410 [2023-11-06 22:47:10,773 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:47:10,773 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@317bffd1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:47:10,774 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2023-11-06 22:47:10,775 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:47:10,775 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-06 22:47:10,775 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:47:10,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:47:10,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:47:10,776 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-06 22:47:10,776 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:10,777 INFO L85 PathProgramCache]: Analyzing trace with hash 84942, now seen corresponding path program 1 times [2023-11-06 22:47:10,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:10,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912089510] [2023-11-06 22:47:10,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:10,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:10,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:10,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:47:10,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:10,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912089510] [2023-11-06 22:47:10,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912089510] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:47:10,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:47:10,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:47:10,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279600980] [2023-11-06 22:47:10,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:47:10,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:47:10,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:10,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:47:10,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:47:10,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 358 out of 839 [2023-11-06 22:47:10,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 155 transitions, 337 flow. Second operand has 3 states, 3 states have (on average 358.6666666666667) internal successors, (1076), 3 states have internal predecessors, (1076), 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) [2023-11-06 22:47:10,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:47:10,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 358 of 839 [2023-11-06 22:47:10,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand