./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/test-context1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f 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_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/test-context1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8 --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 a6c10414fe2617d00008bf9d366bc6ac1618cf93ea0f6ae08bc6c5a126364bce --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:35:45,824 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:35:45,826 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:35:45,864 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:35:45,864 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:35:45,865 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:35:45,867 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:35:45,874 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:35:45,881 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:35:45,883 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:35:45,884 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:35:45,885 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:35:45,886 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:35:45,887 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:35:45,888 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:35:45,889 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:35:45,890 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:35:45,891 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:35:45,895 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:35:45,908 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:35:45,913 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:35:45,917 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:35:45,919 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:35:45,919 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:35:45,923 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:35:45,923 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:35:45,923 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:35:45,924 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:35:45,925 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:35:45,926 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:35:45,926 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:35:45,927 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:35:45,928 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:35:45,937 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:35:45,938 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:35:45,938 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:35:45,939 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:35:45,941 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:35:45,941 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:35:45,942 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:35:45,943 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:35:45,944 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 12:35:45,988 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:35:45,989 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:35:45,990 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:35:45,990 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:35:45,991 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:35:45,991 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:35:45,992 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:35:45,992 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:35:45,993 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:35:45,993 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:35:45,994 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:35:45,994 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:35:45,995 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:35:45,995 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:35:45,995 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:35:45,996 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:35:45,996 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:35:45,996 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:35:45,996 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 12:35:45,997 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:35:45,997 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:35:45,997 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:35:45,997 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:35:45,998 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:35:45,998 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:35:45,998 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:35:45,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:35:45,999 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:35:45,999 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:35:46,000 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:35:46,001 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:35:46,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:35:46,001 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:35:46,002 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:35:46,002 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:35:46,002 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6c10414fe2617d00008bf9d366bc6ac1618cf93ea0f6ae08bc6c5a126364bce [2022-11-16 12:35:46,380 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:35:46,434 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:35:46,437 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:35:46,439 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:35:46,440 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:35:46,441 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/test-context1.wvr.c [2022-11-16 12:35:46,527 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/data/4d6cf6cff/5eaba9762c00420ea615bf087f6ac4be/FLAG52432ce19 [2022-11-16 12:35:47,106 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:35:47,106 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/sv-benchmarks/c/weaver/test-context1.wvr.c [2022-11-16 12:35:47,114 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/data/4d6cf6cff/5eaba9762c00420ea615bf087f6ac4be/FLAG52432ce19 [2022-11-16 12:35:47,417 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/data/4d6cf6cff/5eaba9762c00420ea615bf087f6ac4be [2022-11-16 12:35:47,420 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:35:47,422 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:35:47,424 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:35:47,424 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:35:47,429 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:35:47,430 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:35:47" (1/1) ... [2022-11-16 12:35:47,431 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d437f8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:47, skipping insertion in model container [2022-11-16 12:35:47,432 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:35:47" (1/1) ... [2022-11-16 12:35:47,441 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:35:47,465 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:35:47,802 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/sv-benchmarks/c/weaver/test-context1.wvr.c[2433,2446] [2022-11-16 12:35:47,814 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:35:47,827 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:35:47,871 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/sv-benchmarks/c/weaver/test-context1.wvr.c[2433,2446] [2022-11-16 12:35:47,884 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:35:47,903 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:35:47,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:47 WrapperNode [2022-11-16 12:35:47,905 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:35:47,906 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:35:47,907 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:35:47,907 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:35:47,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:47" (1/1) ... [2022-11-16 12:35:47,935 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:47" (1/1) ... [2022-11-16 12:35:47,977 INFO L138 Inliner]: procedures = 24, calls = 34, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 149 [2022-11-16 12:35:47,980 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:35:47,982 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:35:47,982 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:35:47,982 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:35:47,994 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:47" (1/1) ... [2022-11-16 12:35:47,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:47" (1/1) ... [2022-11-16 12:35:48,012 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:47" (1/1) ... [2022-11-16 12:35:48,018 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:47" (1/1) ... [2022-11-16 12:35:48,025 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:47" (1/1) ... [2022-11-16 12:35:48,040 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:47" (1/1) ... [2022-11-16 12:35:48,042 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:47" (1/1) ... [2022-11-16 12:35:48,055 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:47" (1/1) ... [2022-11-16 12:35:48,059 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:35:48,060 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:35:48,060 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:35:48,060 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:35:48,062 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:47" (1/1) ... [2022-11-16 12:35:48,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:35:48,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:35:48,101 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:35:48,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:35:48,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:35:48,181 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 12:35:48,181 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 12:35:48,181 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 12:35:48,182 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 12:35:48,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:35:48,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:35:48,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:35:48,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 12:35:48,186 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 12:35:48,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:35:48,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:35:48,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:35:48,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:35:48,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:35:48,190 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:35:48,330 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:35:48,332 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:35:48,680 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:35:48,979 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:35:48,979 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-16 12:35:48,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:35:48 BoogieIcfgContainer [2022-11-16 12:35:48,982 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:35:48,985 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:35:48,985 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:35:48,989 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:35:48,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:35:47" (1/3) ... [2022-11-16 12:35:48,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c3158e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:35:48, skipping insertion in model container [2022-11-16 12:35:48,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:47" (2/3) ... [2022-11-16 12:35:48,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c3158e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:35:48, skipping insertion in model container [2022-11-16 12:35:48,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:35:48" (3/3) ... [2022-11-16 12:35:48,992 INFO L112 eAbstractionObserver]: Analyzing ICFG test-context1.wvr.c [2022-11-16 12:35:49,001 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:35:49,013 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:35:49,013 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-11-16 12:35:49,013 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:35:49,077 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 12:35:49,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 131 transitions, 278 flow [2022-11-16 12:35:49,253 INFO L130 PetriNetUnfolder]: 9/129 cut-off events. [2022-11-16 12:35:49,253 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 12:35:49,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 129 events. 9/129 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 134 event pairs, 0 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2022-11-16 12:35:49,260 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 131 transitions, 278 flow [2022-11-16 12:35:49,268 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 109 places, 110 transitions, 229 flow [2022-11-16 12:35:49,280 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:35:49,288 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;@347d4791, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:35:49,289 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2022-11-16 12:35:49,326 INFO L130 PetriNetUnfolder]: 3/60 cut-off events. [2022-11-16 12:35:49,327 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:35:49,327 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:35:49,328 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:35:49,329 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-11-16 12:35:49,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:49,336 INFO L85 PathProgramCache]: Analyzing trace with hash -288637502, now seen corresponding path program 1 times [2022-11-16 12:35:49,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:49,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961707526] [2022-11-16 12:35:49,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:49,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:49,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:49,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:49,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:49,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961707526] [2022-11-16 12:35:49,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961707526] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:35:49,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:35:49,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:35:49,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117241356] [2022-11-16 12:35:49,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:35:49,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:35:49,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:49,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:35:49,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:35:49,963 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 131 [2022-11-16 12:35:49,970 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 110 transitions, 229 flow. Second operand has 4 states, 4 states have (on average 96.5) internal successors, (386), 4 states have internal predecessors, (386), 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) [2022-11-16 12:35:49,971 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:35:49,971 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 131 [2022-11-16 12:35:49,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:35:50,266 INFO L130 PetriNetUnfolder]: 41/208 cut-off events. [2022-11-16 12:35:50,266 INFO L131 PetriNetUnfolder]: For 28/34 co-relation queries the response was YES. [2022-11-16 12:35:50,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 336 conditions, 208 events. 41/208 cut-off events. For 28/34 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 603 event pairs, 22 based on Foata normal form. 20/168 useless extension candidates. Maximal degree in co-relation 152. Up to 52 conditions per place. [2022-11-16 12:35:50,272 INFO L137 encePairwiseOnDemand]: 114/131 looper letters, 36 selfloop transitions, 4 changer transitions 2/117 dead transitions. [2022-11-16 12:35:50,273 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 117 transitions, 332 flow [2022-11-16 12:35:50,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:35:50,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:35:50,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 537 transitions. [2022-11-16 12:35:50,289 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8198473282442749 [2022-11-16 12:35:50,290 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 537 transitions. [2022-11-16 12:35:50,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 537 transitions. [2022-11-16 12:35:50,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:35:50,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 537 transitions. [2022-11-16 12:35:50,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 107.4) internal successors, (537), 5 states have internal predecessors, (537), 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) [2022-11-16 12:35:50,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 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) [2022-11-16 12:35:50,310 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 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) [2022-11-16 12:35:50,312 INFO L175 Difference]: Start difference. First operand has 109 places, 110 transitions, 229 flow. Second operand 5 states and 537 transitions. [2022-11-16 12:35:50,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 117 transitions, 332 flow [2022-11-16 12:35:50,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 117 transitions, 322 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:35:50,324 INFO L231 Difference]: Finished difference. Result has 107 places, 100 transitions, 228 flow [2022-11-16 12:35:50,329 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=228, PETRI_PLACES=107, PETRI_TRANSITIONS=100} [2022-11-16 12:35:50,333 INFO L288 CegarLoopForPetriNet]: 109 programPoint places, -2 predicate places. [2022-11-16 12:35:50,335 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 100 transitions, 228 flow [2022-11-16 12:35:50,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 96.5) internal successors, (386), 4 states have internal predecessors, (386), 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) [2022-11-16 12:35:50,336 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:35:50,337 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:35:50,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:35:50,338 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-11-16 12:35:50,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:50,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1930298475, now seen corresponding path program 1 times [2022-11-16 12:35:50,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:50,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750064750] [2022-11-16 12:35:50,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:50,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:50,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:50,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:50,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:50,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750064750] [2022-11-16 12:35:50,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750064750] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:35:50,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:35:50,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:35:50,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151301728] [2022-11-16 12:35:50,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:35:50,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:35:50,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:50,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:35:50,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:35:50,545 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 131 [2022-11-16 12:35:50,546 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 100 transitions, 228 flow. Second operand has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 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) [2022-11-16 12:35:50,546 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:35:50,547 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 131 [2022-11-16 12:35:50,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:35:50,687 INFO L130 PetriNetUnfolder]: 51/256 cut-off events. [2022-11-16 12:35:50,687 INFO L131 PetriNetUnfolder]: For 11/13 co-relation queries the response was YES. [2022-11-16 12:35:50,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 404 conditions, 256 events. 51/256 cut-off events. For 11/13 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 914 event pairs, 20 based on Foata normal form. 6/192 useless extension candidates. Maximal degree in co-relation 216. Up to 97 conditions per place. [2022-11-16 12:35:50,691 INFO L137 encePairwiseOnDemand]: 121/131 looper letters, 12 selfloop transitions, 3 changer transitions 1/103 dead transitions. [2022-11-16 12:35:50,692 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 103 transitions, 269 flow [2022-11-16 12:35:50,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:35:50,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:35:50,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 439 transitions. [2022-11-16 12:35:50,697 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8377862595419847 [2022-11-16 12:35:50,697 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 439 transitions. [2022-11-16 12:35:50,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 439 transitions. [2022-11-16 12:35:50,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:35:50,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 439 transitions. [2022-11-16 12:35:50,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 109.75) internal successors, (439), 4 states have internal predecessors, (439), 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) [2022-11-16 12:35:50,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 131.0) internal successors, (655), 5 states have internal predecessors, (655), 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) [2022-11-16 12:35:50,704 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 131.0) internal successors, (655), 5 states have internal predecessors, (655), 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) [2022-11-16 12:35:50,704 INFO L175 Difference]: Start difference. First operand has 107 places, 100 transitions, 228 flow. Second operand 4 states and 439 transitions. [2022-11-16 12:35:50,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 103 transitions, 269 flow [2022-11-16 12:35:50,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 103 transitions, 267 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:35:50,710 INFO L231 Difference]: Finished difference. Result has 108 places, 101 transitions, 252 flow [2022-11-16 12:35:50,710 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=252, PETRI_PLACES=108, PETRI_TRANSITIONS=101} [2022-11-16 12:35:50,711 INFO L288 CegarLoopForPetriNet]: 109 programPoint places, -1 predicate places. [2022-11-16 12:35:50,712 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 101 transitions, 252 flow [2022-11-16 12:35:50,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 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) [2022-11-16 12:35:50,713 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:35:50,714 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:35:50,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:35:50,714 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-11-16 12:35:50,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:50,716 INFO L85 PathProgramCache]: Analyzing trace with hash 994389806, now seen corresponding path program 1 times [2022-11-16 12:35:50,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:50,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491142133] [2022-11-16 12:35:50,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:50,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:50,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:50,847 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:50,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:50,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491142133] [2022-11-16 12:35:50,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491142133] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:35:50,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863456568] [2022-11-16 12:35:50,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:50,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:35:50,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:35:50,853 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:35:50,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:35:50,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:50,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:35:50,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:35:51,033 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:51,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:35:51,099 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:51,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863456568] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:35:51,100 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:35:51,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 12:35:51,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636004318] [2022-11-16 12:35:51,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:35:51,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:35:51,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:51,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:35:51,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:35:51,104 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 131 [2022-11-16 12:35:51,106 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 101 transitions, 252 flow. Second operand has 12 states, 12 states have (on average 97.66666666666667) internal successors, (1172), 12 states have internal predecessors, (1172), 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) [2022-11-16 12:35:51,106 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:35:51,106 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 131 [2022-11-16 12:35:51,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:35:51,539 INFO L130 PetriNetUnfolder]: 121/568 cut-off events. [2022-11-16 12:35:51,539 INFO L131 PetriNetUnfolder]: For 60/65 co-relation queries the response was YES. [2022-11-16 12:35:51,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1140 conditions, 568 events. 121/568 cut-off events. For 60/65 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2727 event pairs, 70 based on Foata normal form. 3/411 useless extension candidates. Maximal degree in co-relation 350. Up to 201 conditions per place. [2022-11-16 12:35:51,546 INFO L137 encePairwiseOnDemand]: 124/131 looper letters, 83 selfloop transitions, 18 changer transitions 0/176 dead transitions. [2022-11-16 12:35:51,546 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 176 transitions, 710 flow [2022-11-16 12:35:51,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:35:51,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 12:35:51,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1809 transitions. [2022-11-16 12:35:51,552 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.767175572519084 [2022-11-16 12:35:51,553 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1809 transitions. [2022-11-16 12:35:51,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1809 transitions. [2022-11-16 12:35:51,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:35:51,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1809 transitions. [2022-11-16 12:35:51,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 100.5) internal successors, (1809), 18 states have internal predecessors, (1809), 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) [2022-11-16 12:35:51,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 131.0) internal successors, (2489), 19 states have internal predecessors, (2489), 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) [2022-11-16 12:35:51,569 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 131.0) internal successors, (2489), 19 states have internal predecessors, (2489), 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) [2022-11-16 12:35:51,569 INFO L175 Difference]: Start difference. First operand has 108 places, 101 transitions, 252 flow. Second operand 18 states and 1809 transitions. [2022-11-16 12:35:51,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 176 transitions, 710 flow [2022-11-16 12:35:51,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 176 transitions, 702 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:35:51,596 INFO L231 Difference]: Finished difference. Result has 127 places, 113 transitions, 354 flow [2022-11-16 12:35:51,597 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=354, PETRI_PLACES=127, PETRI_TRANSITIONS=113} [2022-11-16 12:35:51,598 INFO L288 CegarLoopForPetriNet]: 109 programPoint places, 18 predicate places. [2022-11-16 12:35:51,598 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 113 transitions, 354 flow [2022-11-16 12:35:51,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 97.66666666666667) internal successors, (1172), 12 states have internal predecessors, (1172), 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) [2022-11-16 12:35:51,599 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:35:51,600 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:35:51,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:35:51,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:35:51,807 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-11-16 12:35:51,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:51,807 INFO L85 PathProgramCache]: Analyzing trace with hash 205456654, now seen corresponding path program 1 times [2022-11-16 12:35:51,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:51,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064373094] [2022-11-16 12:35:51,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:51,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:51,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:51,976 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:51,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:51,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064373094] [2022-11-16 12:35:51,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064373094] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:35:51,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960931069] [2022-11-16 12:35:51,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:51,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:35:51,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:35:51,978 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:35:51,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:35:52,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:52,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:35:52,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:35:52,511 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:52,514 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:35:52,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960931069] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:35:52,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:35:52,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 11 [2022-11-16 12:35:52,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467386873] [2022-11-16 12:35:52,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:35:52,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:35:52,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:52,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:35:52,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:35:52,524 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 131 [2022-11-16 12:35:52,525 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 113 transitions, 354 flow. Second operand has 8 states, 8 states have (on average 91.875) internal successors, (735), 8 states have internal predecessors, (735), 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) [2022-11-16 12:35:52,526 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:35:52,526 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 131 [2022-11-16 12:35:52,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:35:52,786 INFO L130 PetriNetUnfolder]: 69/447 cut-off events. [2022-11-16 12:35:52,787 INFO L131 PetriNetUnfolder]: For 98/102 co-relation queries the response was YES. [2022-11-16 12:35:52,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 837 conditions, 447 events. 69/447 cut-off events. For 98/102 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1912 event pairs, 36 based on Foata normal form. 2/350 useless extension candidates. Maximal degree in co-relation 631. Up to 165 conditions per place. [2022-11-16 12:35:52,792 INFO L137 encePairwiseOnDemand]: 119/131 looper letters, 28 selfloop transitions, 8 changer transitions 4/117 dead transitions. [2022-11-16 12:35:52,792 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 117 transitions, 442 flow [2022-11-16 12:35:52,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:35:52,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:35:52,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 846 transitions. [2022-11-16 12:35:52,795 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7175572519083969 [2022-11-16 12:35:52,795 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 846 transitions. [2022-11-16 12:35:52,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 846 transitions. [2022-11-16 12:35:52,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:35:52,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 846 transitions. [2022-11-16 12:35:52,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 94.0) internal successors, (846), 9 states have internal predecessors, (846), 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) [2022-11-16 12:35:52,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 131.0) internal successors, (1310), 10 states have internal predecessors, (1310), 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) [2022-11-16 12:35:52,802 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 131.0) internal successors, (1310), 10 states have internal predecessors, (1310), 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) [2022-11-16 12:35:52,803 INFO L175 Difference]: Start difference. First operand has 127 places, 113 transitions, 354 flow. Second operand 9 states and 846 transitions. [2022-11-16 12:35:52,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 117 transitions, 442 flow [2022-11-16 12:35:52,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 117 transitions, 402 flow, removed 15 selfloop flow, removed 5 redundant places. [2022-11-16 12:35:52,808 INFO L231 Difference]: Finished difference. Result has 130 places, 111 transitions, 328 flow [2022-11-16 12:35:52,808 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=328, PETRI_PLACES=130, PETRI_TRANSITIONS=111} [2022-11-16 12:35:52,809 INFO L288 CegarLoopForPetriNet]: 109 programPoint places, 21 predicate places. [2022-11-16 12:35:52,809 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 111 transitions, 328 flow [2022-11-16 12:35:52,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 91.875) internal successors, (735), 8 states have internal predecessors, (735), 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) [2022-11-16 12:35:52,809 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:35:52,810 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:35:52,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:35:53,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:35:53,016 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-11-16 12:35:53,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:53,017 INFO L85 PathProgramCache]: Analyzing trace with hash 761313293, now seen corresponding path program 1 times [2022-11-16 12:35:53,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:53,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422916204] [2022-11-16 12:35:53,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:53,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:53,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:53,185 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:53,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:53,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422916204] [2022-11-16 12:35:53,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422916204] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:35:53,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30836553] [2022-11-16 12:35:53,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:53,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:35:53,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:35:53,188 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:35:53,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:35:53,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:53,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:35:53,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:35:53,371 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:53,371 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:35:53,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30836553] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:35:53,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:35:53,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 12:35:53,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521032606] [2022-11-16 12:35:53,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:35:53,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:35:53,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:53,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:35:53,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:35:53,375 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 131 [2022-11-16 12:35:53,376 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 111 transitions, 328 flow. Second operand has 6 states, 6 states have (on average 97.33333333333333) internal successors, (584), 6 states have internal predecessors, (584), 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) [2022-11-16 12:35:53,376 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:35:53,376 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 131 [2022-11-16 12:35:53,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:35:53,530 INFO L130 PetriNetUnfolder]: 65/405 cut-off events. [2022-11-16 12:35:53,531 INFO L131 PetriNetUnfolder]: For 83/87 co-relation queries the response was YES. [2022-11-16 12:35:53,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 761 conditions, 405 events. 65/405 cut-off events. For 83/87 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1631 event pairs, 32 based on Foata normal form. 4/333 useless extension candidates. Maximal degree in co-relation 674. Up to 136 conditions per place. [2022-11-16 12:35:53,534 INFO L137 encePairwiseOnDemand]: 126/131 looper letters, 25 selfloop transitions, 11 changer transitions 0/111 dead transitions. [2022-11-16 12:35:53,534 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 111 transitions, 391 flow [2022-11-16 12:35:53,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:35:53,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:35:53,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 692 transitions. [2022-11-16 12:35:53,537 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7546346782988005 [2022-11-16 12:35:53,537 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 692 transitions. [2022-11-16 12:35:53,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 692 transitions. [2022-11-16 12:35:53,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:35:53,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 692 transitions. [2022-11-16 12:35:53,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 98.85714285714286) internal successors, (692), 7 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) [2022-11-16 12:35:53,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 131.0) internal successors, (1048), 8 states have internal predecessors, (1048), 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) [2022-11-16 12:35:53,542 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 131.0) internal successors, (1048), 8 states have internal predecessors, (1048), 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) [2022-11-16 12:35:53,542 INFO L175 Difference]: Start difference. First operand has 130 places, 111 transitions, 328 flow. Second operand 7 states and 692 transitions. [2022-11-16 12:35:53,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 111 transitions, 391 flow [2022-11-16 12:35:53,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 111 transitions, 373 flow, removed 1 selfloop flow, removed 8 redundant places. [2022-11-16 12:35:53,549 INFO L231 Difference]: Finished difference. Result has 122 places, 107 transitions, 313 flow [2022-11-16 12:35:53,549 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=313, PETRI_PLACES=122, PETRI_TRANSITIONS=107} [2022-11-16 12:35:53,553 INFO L288 CegarLoopForPetriNet]: 109 programPoint places, 13 predicate places. [2022-11-16 12:35:53,553 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 107 transitions, 313 flow [2022-11-16 12:35:53,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 97.33333333333333) internal successors, (584), 6 states have internal predecessors, (584), 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) [2022-11-16 12:35:53,553 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:35:53,554 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:35:53,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:35:53,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:35:53,760 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-11-16 12:35:53,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:53,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1730502790, now seen corresponding path program 1 times [2022-11-16 12:35:53,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:53,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941308970] [2022-11-16 12:35:53,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:53,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:53,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:53,967 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:35:53,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:53,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941308970] [2022-11-16 12:35:53,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941308970] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:35:53,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514727967] [2022-11-16 12:35:53,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:53,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:35:53,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:35:53,973 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:35:53,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:35:54,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:54,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:35:54,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:35:54,336 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 3 [2022-11-16 12:35:54,362 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:35:54,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:35:54,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 4 [2022-11-16 12:35:54,904 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:35:54,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514727967] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:35:54,912 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:35:54,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 9 [2022-11-16 12:35:54,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651953787] [2022-11-16 12:35:54,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:35:54,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:35:54,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:54,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:35:54,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:35:54,916 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 131 [2022-11-16 12:35:54,917 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 107 transitions, 313 flow. Second operand has 10 states, 10 states have (on average 105.5) internal successors, (1055), 10 states have internal predecessors, (1055), 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) [2022-11-16 12:35:54,917 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:35:54,918 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 131 [2022-11-16 12:35:54,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:35:55,209 INFO L130 PetriNetUnfolder]: 125/929 cut-off events. [2022-11-16 12:35:55,209 INFO L131 PetriNetUnfolder]: For 157/161 co-relation queries the response was YES. [2022-11-16 12:35:55,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1500 conditions, 929 events. 125/929 cut-off events. For 157/161 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 5796 event pairs, 0 based on Foata normal form. 12/777 useless extension candidates. Maximal degree in co-relation 1420. Up to 205 conditions per place. [2022-11-16 12:35:55,215 INFO L137 encePairwiseOnDemand]: 123/131 looper letters, 15 selfloop transitions, 17 changer transitions 4/131 dead transitions. [2022-11-16 12:35:55,216 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 131 transitions, 475 flow [2022-11-16 12:35:55,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:35:55,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 12:35:55,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1093 transitions. [2022-11-16 12:35:55,219 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.834351145038168 [2022-11-16 12:35:55,219 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1093 transitions. [2022-11-16 12:35:55,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1093 transitions. [2022-11-16 12:35:55,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:35:55,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1093 transitions. [2022-11-16 12:35:55,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 109.3) internal successors, (1093), 10 states have internal predecessors, (1093), 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) [2022-11-16 12:35:55,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 131.0) internal successors, (1441), 11 states have internal predecessors, (1441), 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) [2022-11-16 12:35:55,226 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 131.0) internal successors, (1441), 11 states have internal predecessors, (1441), 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) [2022-11-16 12:35:55,227 INFO L175 Difference]: Start difference. First operand has 122 places, 107 transitions, 313 flow. Second operand 10 states and 1093 transitions. [2022-11-16 12:35:55,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 131 transitions, 475 flow [2022-11-16 12:35:55,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 131 transitions, 461 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:35:55,231 INFO L231 Difference]: Finished difference. Result has 132 places, 123 transitions, 465 flow [2022-11-16 12:35:55,231 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=465, PETRI_PLACES=132, PETRI_TRANSITIONS=123} [2022-11-16 12:35:55,232 INFO L288 CegarLoopForPetriNet]: 109 programPoint places, 23 predicate places. [2022-11-16 12:35:55,232 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 123 transitions, 465 flow [2022-11-16 12:35:55,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 105.5) internal successors, (1055), 10 states have internal predecessors, (1055), 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) [2022-11-16 12:35:55,233 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:35:55,233 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:35:55,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:35:55,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:35:55,439 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-11-16 12:35:55,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:55,439 INFO L85 PathProgramCache]: Analyzing trace with hash -915448923, now seen corresponding path program 1 times [2022-11-16 12:35:55,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:55,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128639308] [2022-11-16 12:35:55,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:55,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:55,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:55,799 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 12:35:55,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:55,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128639308] [2022-11-16 12:35:55,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128639308] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:35:55,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233171166] [2022-11-16 12:35:55,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:55,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:35:55,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:35:55,805 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:35:55,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:35:55,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:55,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:35:55,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:35:56,205 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 12:35:56,205 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:35:56,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233171166] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:35:56,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:35:56,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2022-11-16 12:35:56,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526304243] [2022-11-16 12:35:56,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:35:56,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:35:56,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:56,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:35:56,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:35:56,209 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 131 [2022-11-16 12:35:56,210 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 123 transitions, 465 flow. Second operand has 5 states, 5 states have (on average 101.0) internal successors, (505), 5 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:56,210 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:35:56,210 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 131 [2022-11-16 12:35:56,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:35:56,362 INFO L130 PetriNetUnfolder]: 73/709 cut-off events. [2022-11-16 12:35:56,362 INFO L131 PetriNetUnfolder]: For 521/525 co-relation queries the response was YES. [2022-11-16 12:35:56,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1294 conditions, 709 events. 73/709 cut-off events. For 521/525 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 4034 event pairs, 20 based on Foata normal form. 20/637 useless extension candidates. Maximal degree in co-relation 1243. Up to 172 conditions per place. [2022-11-16 12:35:56,366 INFO L137 encePairwiseOnDemand]: 125/131 looper letters, 22 selfloop transitions, 4 changer transitions 0/116 dead transitions. [2022-11-16 12:35:56,366 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 116 transitions, 457 flow [2022-11-16 12:35:56,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:35:56,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:35:56,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 511 transitions. [2022-11-16 12:35:56,368 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7801526717557252 [2022-11-16 12:35:56,369 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 511 transitions. [2022-11-16 12:35:56,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 511 transitions. [2022-11-16 12:35:56,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:35:56,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 511 transitions. [2022-11-16 12:35:56,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 102.2) internal successors, (511), 5 states have internal predecessors, (511), 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) [2022-11-16 12:35:56,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 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) [2022-11-16 12:35:56,372 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 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) [2022-11-16 12:35:56,372 INFO L175 Difference]: Start difference. First operand has 132 places, 123 transitions, 465 flow. Second operand 5 states and 511 transitions. [2022-11-16 12:35:56,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 116 transitions, 457 flow [2022-11-16 12:35:56,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 116 transitions, 429 flow, removed 12 selfloop flow, removed 3 redundant places. [2022-11-16 12:35:56,377 INFO L231 Difference]: Finished difference. Result has 130 places, 116 transitions, 385 flow [2022-11-16 12:35:56,377 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=385, PETRI_PLACES=130, PETRI_TRANSITIONS=116} [2022-11-16 12:35:56,378 INFO L288 CegarLoopForPetriNet]: 109 programPoint places, 21 predicate places. [2022-11-16 12:35:56,378 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 116 transitions, 385 flow [2022-11-16 12:35:56,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 101.0) internal successors, (505), 5 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:56,378 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:35:56,378 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:35:56,390 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-16 12:35:56,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-16 12:35:56,584 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-11-16 12:35:56,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:56,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1690755348, now seen corresponding path program 1 times [2022-11-16 12:35:56,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:56,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706472728] [2022-11-16 12:35:56,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:56,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:56,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:56,867 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 12:35:56,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:56,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706472728] [2022-11-16 12:35:56,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706472728] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:35:56,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739043241] [2022-11-16 12:35:56,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:56,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:35:56,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:35:56,874 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:35:56,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:35:56,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:56,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 12:35:56,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:35:57,384 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 12:35:57,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:35:57,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 4 [2022-11-16 12:35:58,107 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 12:35:58,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739043241] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:35:58,107 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:35:58,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 24 [2022-11-16 12:35:58,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652561436] [2022-11-16 12:35:58,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:35:58,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-16 12:35:58,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:58,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-16 12:35:58,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2022-11-16 12:35:58,113 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 131 [2022-11-16 12:35:58,116 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 116 transitions, 385 flow. Second operand has 24 states, 24 states have (on average 87.875) internal successors, (2109), 24 states have internal predecessors, (2109), 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) [2022-11-16 12:35:58,116 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:35:58,117 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 131 [2022-11-16 12:35:58,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:35:58,898 INFO L130 PetriNetUnfolder]: 51/555 cut-off events. [2022-11-16 12:35:58,899 INFO L131 PetriNetUnfolder]: For 268/272 co-relation queries the response was YES. [2022-11-16 12:35:58,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 967 conditions, 555 events. 51/555 cut-off events. For 268/272 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2780 event pairs, 12 based on Foata normal form. 7/499 useless extension candidates. Maximal degree in co-relation 919. Up to 101 conditions per place. [2022-11-16 12:35:58,902 INFO L137 encePairwiseOnDemand]: 116/131 looper letters, 42 selfloop transitions, 17 changer transitions 9/133 dead transitions. [2022-11-16 12:35:58,902 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 133 transitions, 573 flow [2022-11-16 12:35:58,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:35:58,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-16 12:35:58,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1331 transitions. [2022-11-16 12:35:58,907 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.67735368956743 [2022-11-16 12:35:58,907 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1331 transitions. [2022-11-16 12:35:58,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1331 transitions. [2022-11-16 12:35:58,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:35:58,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1331 transitions. [2022-11-16 12:35:58,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 88.73333333333333) internal successors, (1331), 15 states have internal predecessors, (1331), 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) [2022-11-16 12:35:58,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 131.0) internal successors, (2096), 16 states have internal predecessors, (2096), 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) [2022-11-16 12:35:58,918 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 131.0) internal successors, (2096), 16 states have internal predecessors, (2096), 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) [2022-11-16 12:35:58,918 INFO L175 Difference]: Start difference. First operand has 130 places, 116 transitions, 385 flow. Second operand 15 states and 1331 transitions. [2022-11-16 12:35:58,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 133 transitions, 573 flow [2022-11-16 12:35:58,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 133 transitions, 565 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:35:58,924 INFO L231 Difference]: Finished difference. Result has 145 places, 116 transitions, 430 flow [2022-11-16 12:35:58,925 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=430, PETRI_PLACES=145, PETRI_TRANSITIONS=116} [2022-11-16 12:35:58,925 INFO L288 CegarLoopForPetriNet]: 109 programPoint places, 36 predicate places. [2022-11-16 12:35:58,926 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 116 transitions, 430 flow [2022-11-16 12:35:58,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 87.875) internal successors, (2109), 24 states have internal predecessors, (2109), 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) [2022-11-16 12:35:58,927 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:35:58,927 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:35:58,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:35:59,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:35:59,134 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-11-16 12:35:59,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:59,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1718489282, now seen corresponding path program 2 times [2022-11-16 12:35:59,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:59,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855329070] [2022-11-16 12:35:59,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:59,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:59,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:59,323 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:59,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:59,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855329070] [2022-11-16 12:35:59,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855329070] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:35:59,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907992998] [2022-11-16 12:35:59,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:35:59,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:35:59,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:35:59,326 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:35:59,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 12:35:59,426 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:35:59,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:35:59,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:35:59,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:35:59,594 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 12:35:59,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:35:59,736 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 12:35:59,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907992998] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:35:59,736 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:35:59,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-16 12:35:59,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452381282] [2022-11-16 12:35:59,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:35:59,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:35:59,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:59,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:35:59,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:35:59,743 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 131 [2022-11-16 12:35:59,745 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 116 transitions, 430 flow. Second operand has 18 states, 18 states have (on average 88.61111111111111) internal successors, (1595), 18 states have internal predecessors, (1595), 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) [2022-11-16 12:35:59,745 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:35:59,745 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 131 [2022-11-16 12:35:59,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:36:00,487 INFO L130 PetriNetUnfolder]: 81/764 cut-off events. [2022-11-16 12:36:00,487 INFO L131 PetriNetUnfolder]: For 583/588 co-relation queries the response was YES. [2022-11-16 12:36:00,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1458 conditions, 764 events. 81/764 cut-off events. For 583/588 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 4300 event pairs, 25 based on Foata normal form. 2/686 useless extension candidates. Maximal degree in co-relation 1413. Up to 65 conditions per place. [2022-11-16 12:36:00,492 INFO L137 encePairwiseOnDemand]: 120/131 looper letters, 115 selfloop transitions, 25 changer transitions 0/206 dead transitions. [2022-11-16 12:36:00,493 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 206 transitions, 1217 flow [2022-11-16 12:36:00,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 12:36:00,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-16 12:36:00,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2132 transitions. [2022-11-16 12:36:00,499 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.678117048346056 [2022-11-16 12:36:00,499 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2132 transitions. [2022-11-16 12:36:00,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2132 transitions. [2022-11-16 12:36:00,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:36:00,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2132 transitions. [2022-11-16 12:36:00,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 88.83333333333333) internal successors, (2132), 24 states have internal predecessors, (2132), 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) [2022-11-16 12:36:00,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 131.0) internal successors, (3275), 25 states have internal predecessors, (3275), 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) [2022-11-16 12:36:00,516 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 131.0) internal successors, (3275), 25 states have internal predecessors, (3275), 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) [2022-11-16 12:36:00,516 INFO L175 Difference]: Start difference. First operand has 145 places, 116 transitions, 430 flow. Second operand 24 states and 2132 transitions. [2022-11-16 12:36:00,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 206 transitions, 1217 flow [2022-11-16 12:36:00,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 206 transitions, 1141 flow, removed 20 selfloop flow, removed 16 redundant places. [2022-11-16 12:36:00,525 INFO L231 Difference]: Finished difference. Result has 149 places, 120 transitions, 469 flow [2022-11-16 12:36:00,525 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=469, PETRI_PLACES=149, PETRI_TRANSITIONS=120} [2022-11-16 12:36:00,526 INFO L288 CegarLoopForPetriNet]: 109 programPoint places, 40 predicate places. [2022-11-16 12:36:00,526 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 120 transitions, 469 flow [2022-11-16 12:36:00,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 88.61111111111111) internal successors, (1595), 18 states have internal predecessors, (1595), 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) [2022-11-16 12:36:00,527 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:36:00,528 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:36:00,542 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-16 12:36:00,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:00,743 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-11-16 12:36:00,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:00,743 INFO L85 PathProgramCache]: Analyzing trace with hash 916125656, now seen corresponding path program 2 times [2022-11-16 12:36:00,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:00,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537450148] [2022-11-16 12:36:00,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:00,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:00,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:01,196 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 12:36:01,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:36:01,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537450148] [2022-11-16 12:36:01,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537450148] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:36:01,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015332721] [2022-11-16 12:36:01,197 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:36:01,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:01,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:36:01,198 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:36:01,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 12:36:01,322 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:36:01,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:36:01,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:36:01,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:36:01,942 INFO L321 Elim1Store]: treesize reduction 41, result has 2.4 percent of original size [2022-11-16 12:36:01,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 10 [2022-11-16 12:36:01,986 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 12:36:01,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:36:02,558 INFO L321 Elim1Store]: treesize reduction 41, result has 2.4 percent of original size [2022-11-16 12:36:02,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 13 [2022-11-16 12:36:03,192 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 12:36:03,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015332721] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:36:03,193 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:36:03,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 22 [2022-11-16 12:36:03,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037550969] [2022-11-16 12:36:03,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:36:03,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:36:03,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:36:03,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:36:03,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:36:03,197 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 131 [2022-11-16 12:36:03,199 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 120 transitions, 469 flow. Second operand has 23 states, 23 states have (on average 81.26086956521739) internal successors, (1869), 23 states have internal predecessors, (1869), 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) [2022-11-16 12:36:03,200 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:36:03,200 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 131 [2022-11-16 12:36:03,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:36:06,227 INFO L130 PetriNetUnfolder]: 816/4184 cut-off events. [2022-11-16 12:36:06,227 INFO L131 PetriNetUnfolder]: For 2396/2396 co-relation queries the response was YES. [2022-11-16 12:36:06,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7601 conditions, 4184 events. 816/4184 cut-off events. For 2396/2396 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 39299 event pairs, 2 based on Foata normal form. 198/3991 useless extension candidates. Maximal degree in co-relation 5616. Up to 571 conditions per place. [2022-11-16 12:36:06,250 INFO L137 encePairwiseOnDemand]: 113/131 looper letters, 103 selfloop transitions, 76 changer transitions 91/327 dead transitions. [2022-11-16 12:36:06,251 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 327 transitions, 1746 flow [2022-11-16 12:36:06,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-16 12:36:06,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-11-16 12:36:06,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 3556 transitions. [2022-11-16 12:36:06,262 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6312799573939286 [2022-11-16 12:36:06,262 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 3556 transitions. [2022-11-16 12:36:06,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 3556 transitions. [2022-11-16 12:36:06,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:36:06,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 3556 transitions. [2022-11-16 12:36:06,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 82.69767441860465) internal successors, (3556), 43 states have internal predecessors, (3556), 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) [2022-11-16 12:36:06,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 131.0) internal successors, (5764), 44 states have internal predecessors, (5764), 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) [2022-11-16 12:36:06,298 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 131.0) internal successors, (5764), 44 states have internal predecessors, (5764), 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) [2022-11-16 12:36:06,298 INFO L175 Difference]: Start difference. First operand has 149 places, 120 transitions, 469 flow. Second operand 43 states and 3556 transitions. [2022-11-16 12:36:06,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 327 transitions, 1746 flow [2022-11-16 12:36:06,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 327 transitions, 1681 flow, removed 2 selfloop flow, removed 18 redundant places. [2022-11-16 12:36:06,329 INFO L231 Difference]: Finished difference. Result has 176 places, 179 transitions, 871 flow [2022-11-16 12:36:06,330 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=871, PETRI_PLACES=176, PETRI_TRANSITIONS=179} [2022-11-16 12:36:06,331 INFO L288 CegarLoopForPetriNet]: 109 programPoint places, 67 predicate places. [2022-11-16 12:36:06,331 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 179 transitions, 871 flow [2022-11-16 12:36:06,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 81.26086956521739) internal successors, (1869), 23 states have internal predecessors, (1869), 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) [2022-11-16 12:36:06,333 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:36:06,333 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:36:06,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 12:36:06,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 12:36:06,540 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-11-16 12:36:06,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:06,541 INFO L85 PathProgramCache]: Analyzing trace with hash -423495258, now seen corresponding path program 1 times [2022-11-16 12:36:06,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:06,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882620556] [2022-11-16 12:36:06,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:06,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:06,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:06,672 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-16 12:36:06,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:36:06,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882620556] [2022-11-16 12:36:06,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882620556] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:36:06,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:36:06,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:36:06,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663630276] [2022-11-16 12:36:06,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:36:06,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:36:06,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:36:06,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:36:06,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:36:06,675 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 131 [2022-11-16 12:36:06,676 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 179 transitions, 871 flow. Second operand has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 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) [2022-11-16 12:36:06,676 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:36:06,676 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 131 [2022-11-16 12:36:06,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:36:07,137 INFO L130 PetriNetUnfolder]: 313/2387 cut-off events. [2022-11-16 12:36:07,138 INFO L131 PetriNetUnfolder]: For 2058/2062 co-relation queries the response was YES. [2022-11-16 12:36:07,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4502 conditions, 2387 events. 313/2387 cut-off events. For 2058/2062 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 21911 event pairs, 64 based on Foata normal form. 32/2175 useless extension candidates. Maximal degree in co-relation 4473. Up to 617 conditions per place. [2022-11-16 12:36:07,153 INFO L137 encePairwiseOnDemand]: 129/131 looper letters, 64 selfloop transitions, 1 changer transitions 3/173 dead transitions. [2022-11-16 12:36:07,153 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 173 transitions, 926 flow [2022-11-16 12:36:07,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:36:07,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:36:07,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 323 transitions. [2022-11-16 12:36:07,155 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.821882951653944 [2022-11-16 12:36:07,155 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 323 transitions. [2022-11-16 12:36:07,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 323 transitions. [2022-11-16 12:36:07,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:36:07,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 323 transitions. [2022-11-16 12:36:07,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 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) [2022-11-16 12:36:07,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 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) [2022-11-16 12:36:07,158 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 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) [2022-11-16 12:36:07,158 INFO L175 Difference]: Start difference. First operand has 176 places, 179 transitions, 871 flow. Second operand 3 states and 323 transitions. [2022-11-16 12:36:07,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 173 transitions, 926 flow [2022-11-16 12:36:07,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 173 transitions, 819 flow, removed 13 selfloop flow, removed 21 redundant places. [2022-11-16 12:36:07,172 INFO L231 Difference]: Finished difference. Result has 146 places, 170 transitions, 682 flow [2022-11-16 12:36:07,172 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=687, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=682, PETRI_PLACES=146, PETRI_TRANSITIONS=170} [2022-11-16 12:36:07,173 INFO L288 CegarLoopForPetriNet]: 109 programPoint places, 37 predicate places. [2022-11-16 12:36:07,173 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 170 transitions, 682 flow [2022-11-16 12:36:07,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 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) [2022-11-16 12:36:07,174 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:36:07,174 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:36:07,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:36:07,174 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-11-16 12:36:07,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:07,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1474741117, now seen corresponding path program 3 times [2022-11-16 12:36:07,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:07,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139858603] [2022-11-16 12:36:07,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:07,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:07,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:07,699 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 12:36:07,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:36:07,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139858603] [2022-11-16 12:36:07,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139858603] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:36:07,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080992938] [2022-11-16 12:36:07,701 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:36:07,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:07,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:36:07,705 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:36:07,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 12:36:07,841 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-16 12:36:07,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:36:07,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:36:07,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:36:08,065 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 3 [2022-11-16 12:36:08,171 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-16 12:36:08,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:36:08,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 4 [2022-11-16 12:36:08,404 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-16 12:36:08,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080992938] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:36:08,405 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:36:08,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 17 [2022-11-16 12:36:08,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242596187] [2022-11-16 12:36:08,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:36:08,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:36:08,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:36:08,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:36:08,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:36:08,409 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 131 [2022-11-16 12:36:08,410 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 170 transitions, 682 flow. Second operand has 18 states, 18 states have (on average 85.94444444444444) internal successors, (1547), 18 states have internal predecessors, (1547), 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) [2022-11-16 12:36:08,411 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:36:08,411 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 131 [2022-11-16 12:36:08,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:36:09,369 INFO L130 PetriNetUnfolder]: 201/1759 cut-off events. [2022-11-16 12:36:09,369 INFO L131 PetriNetUnfolder]: For 631/631 co-relation queries the response was YES. [2022-11-16 12:36:09,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3007 conditions, 1759 events. 201/1759 cut-off events. For 631/631 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 14295 event pairs, 20 based on Foata normal form. 12/1579 useless extension candidates. Maximal degree in co-relation 2985. Up to 212 conditions per place. [2022-11-16 12:36:09,377 INFO L137 encePairwiseOnDemand]: 117/131 looper letters, 0 selfloop transitions, 0 changer transitions 253/253 dead transitions. [2022-11-16 12:36:09,377 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 253 transitions, 1483 flow [2022-11-16 12:36:09,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-16 12:36:09,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-16 12:36:09,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1956 transitions. [2022-11-16 12:36:09,381 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6491868569532028 [2022-11-16 12:36:09,382 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1956 transitions. [2022-11-16 12:36:09,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1956 transitions. [2022-11-16 12:36:09,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:36:09,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1956 transitions. [2022-11-16 12:36:09,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 85.04347826086956) internal successors, (1956), 23 states have internal predecessors, (1956), 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) [2022-11-16 12:36:09,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 131.0) internal successors, (3144), 24 states have internal predecessors, (3144), 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) [2022-11-16 12:36:09,392 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 131.0) internal successors, (3144), 24 states have internal predecessors, (3144), 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) [2022-11-16 12:36:09,393 INFO L175 Difference]: Start difference. First operand has 146 places, 170 transitions, 682 flow. Second operand 23 states and 1956 transitions. [2022-11-16 12:36:09,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 253 transitions, 1483 flow [2022-11-16 12:36:09,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 253 transitions, 1482 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:36:09,398 INFO L231 Difference]: Finished difference. Result has 162 places, 0 transitions, 0 flow [2022-11-16 12:36:09,398 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=660, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=0, PETRI_PLACES=162, PETRI_TRANSITIONS=0} [2022-11-16 12:36:09,399 INFO L288 CegarLoopForPetriNet]: 109 programPoint places, 53 predicate places. [2022-11-16 12:36:09,400 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 0 transitions, 0 flow [2022-11-16 12:36:09,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 85.94444444444444) internal successors, (1547), 18 states have internal predecessors, (1547), 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) [2022-11-16 12:36:09,403 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 28 remaining) [2022-11-16 12:36:09,404 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 28 remaining) [2022-11-16 12:36:09,404 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 28 remaining) [2022-11-16 12:36:09,404 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 28 remaining) [2022-11-16 12:36:09,404 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 28 remaining) [2022-11-16 12:36:09,404 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 28 remaining) [2022-11-16 12:36:09,405 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 28 remaining) [2022-11-16 12:36:09,405 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 28 remaining) [2022-11-16 12:36:09,405 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 28 remaining) [2022-11-16 12:36:09,405 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 28 remaining) [2022-11-16 12:36:09,405 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 28 remaining) [2022-11-16 12:36:09,406 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 28 remaining) [2022-11-16 12:36:09,406 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 28 remaining) [2022-11-16 12:36:09,406 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 28 remaining) [2022-11-16 12:36:09,406 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 28 remaining) [2022-11-16 12:36:09,406 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 28 remaining) [2022-11-16 12:36:09,407 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 28 remaining) [2022-11-16 12:36:09,407 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 28 remaining) [2022-11-16 12:36:09,407 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 28 remaining) [2022-11-16 12:36:09,407 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 28 remaining) [2022-11-16 12:36:09,407 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 28 remaining) [2022-11-16 12:36:09,408 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 28 remaining) [2022-11-16 12:36:09,408 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 28 remaining) [2022-11-16 12:36:09,408 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 28 remaining) [2022-11-16 12:36:09,408 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 28 remaining) [2022-11-16 12:36:09,408 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 28 remaining) [2022-11-16 12:36:09,409 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 28 remaining) [2022-11-16 12:36:09,409 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 28 remaining) [2022-11-16 12:36:09,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 12:36:09,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-16 12:36:09,615 INFO L444 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:36:09,621 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-16 12:36:09,622 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 12:36:09,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:36:09 BasicIcfg [2022-11-16 12:36:09,627 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 12:36:09,628 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 12:36:09,628 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 12:36:09,628 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 12:36:09,629 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:35:48" (3/4) ... [2022-11-16 12:36:09,632 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 12:36:09,637 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-16 12:36:09,637 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-16 12:36:09,644 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-11-16 12:36:09,644 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-16 12:36:09,645 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-16 12:36:09,645 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 12:36:09,688 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 12:36:09,688 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 12:36:09,689 INFO L158 Benchmark]: Toolchain (without parser) took 22267.45ms. Allocated memory was 132.1MB in the beginning and 341.8MB in the end (delta: 209.7MB). Free memory was 94.9MB in the beginning and 190.0MB in the end (delta: -95.2MB). Peak memory consumption was 112.6MB. Max. memory is 16.1GB. [2022-11-16 12:36:09,690 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 132.1MB. Free memory was 111.3MB in the beginning and 111.1MB in the end (delta: 158.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:36:09,690 INFO L158 Benchmark]: CACSL2BoogieTranslator took 481.21ms. Allocated memory is still 132.1MB. Free memory was 94.7MB in the beginning and 104.2MB in the end (delta: -9.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-16 12:36:09,691 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.42ms. Allocated memory is still 132.1MB. Free memory was 104.2MB in the beginning and 102.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:36:09,691 INFO L158 Benchmark]: Boogie Preprocessor took 77.46ms. Allocated memory is still 132.1MB. Free memory was 102.1MB in the beginning and 100.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:36:09,691 INFO L158 Benchmark]: RCFGBuilder took 922.55ms. Allocated memory is still 132.1MB. Free memory was 100.6MB in the beginning and 61.4MB in the end (delta: 39.2MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2022-11-16 12:36:09,694 INFO L158 Benchmark]: TraceAbstraction took 20642.69ms. Allocated memory was 132.1MB in the beginning and 341.8MB in the end (delta: 209.7MB). Free memory was 60.8MB in the beginning and 192.6MB in the end (delta: -131.8MB). Peak memory consumption was 171.9MB. Max. memory is 16.1GB. [2022-11-16 12:36:09,695 INFO L158 Benchmark]: Witness Printer took 60.64ms. Allocated memory is still 341.8MB. Free memory was 192.6MB in the beginning and 190.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:36:09,697 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 132.1MB. Free memory was 111.3MB in the beginning and 111.1MB in the end (delta: 158.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 481.21ms. Allocated memory is still 132.1MB. Free memory was 94.7MB in the beginning and 104.2MB in the end (delta: -9.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 74.42ms. Allocated memory is still 132.1MB. Free memory was 104.2MB in the beginning and 102.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 77.46ms. Allocated memory is still 132.1MB. Free memory was 102.1MB in the beginning and 100.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 922.55ms. Allocated memory is still 132.1MB. Free memory was 100.6MB in the beginning and 61.4MB in the end (delta: 39.2MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * TraceAbstraction took 20642.69ms. Allocated memory was 132.1MB in the beginning and 341.8MB in the end (delta: 209.7MB). Free memory was 60.8MB in the beginning and 192.6MB in the end (delta: -131.8MB). Peak memory consumption was 171.9MB. Max. memory is 16.1GB. * Witness Printer took 60.64ms. Allocated memory is still 341.8MB. Free memory was 192.6MB in the beginning and 190.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 51]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 51]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 52]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 52]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 64]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 64]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 65]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 65]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 151 locations, 28 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 20.5s, OverallIterations: 12, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 8.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1667 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1667 mSDsluCounter, 376 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 362 IncrementalHoareTripleChecker+Unchecked, 299 mSDsCounter, 180 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1582 IncrementalHoareTripleChecker+Invalid, 2124 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 180 mSolverCounterUnsat, 77 mSDtfsCounter, 1582 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1357 GetRequests, 1115 SyntacticMatches, 9 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2097 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=871occurred in iteration=10, InterpolantAutomatonStates: 166, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 8.5s InterpolantComputationTime, 1585 NumberOfCodeBlocks, 1520 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 2054 ConstructedInterpolants, 9 QuantifiedInterpolants, 10839 SizeOfPredicates, 78 NumberOfNonLiveVariables, 1458 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 27 InterpolantComputations, 6 PerfectInterpolantSequences, 347/643 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-16 12:36:09,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c26951-dcb6-4f18-a927-3590019f18a1/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE