./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-dec-subseq.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b 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_8605a062-2847-4b93-8ceb-9f64b5293212/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8605a062-2847-4b93-8ceb-9f64b5293212/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8605a062-2847-4b93-8ceb-9f64b5293212/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8605a062-2847-4b93-8ceb-9f64b5293212/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-dec-subseq.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8605a062-2847-4b93-8ceb-9f64b5293212/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8605a062-2847-4b93-8ceb-9f64b5293212/bin/uautomizer-TMbwUNV5ro --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 ecda181bd3fe1882667151a04232fb9d04292dd6ca3491d98fdc8de5d539856a --- 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-8393723 [2022-11-18 20:48:23,922 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:48:23,924 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:48:23,960 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:48:23,961 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:48:23,967 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:48:23,970 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:48:23,974 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:48:23,979 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:48:23,980 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:48:23,982 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:48:23,984 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:48:23,985 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:48:23,988 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:48:23,990 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:48:23,991 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:48:23,993 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:48:24,000 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:48:24,002 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:48:24,004 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:48:24,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:48:24,013 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:48:24,014 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:48:24,017 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:48:24,020 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:48:24,025 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:48:24,025 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:48:24,027 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:48:24,028 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:48:24,029 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:48:24,031 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:48:24,032 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:48:24,033 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:48:24,034 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:48:24,037 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:48:24,037 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:48:24,038 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:48:24,039 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:48:24,039 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:48:24,040 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:48:24,041 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:48:24,041 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8605a062-2847-4b93-8ceb-9f64b5293212/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 20:48:24,072 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:48:24,073 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:48:24,074 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:48:24,074 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:48:24,075 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:48:24,075 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:48:24,076 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:48:24,076 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:48:24,077 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:48:24,077 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:48:24,078 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:48:24,078 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:48:24,078 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:48:24,079 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:48:24,079 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:48:24,079 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:48:24,079 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:48:24,079 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:48:24,080 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 20:48:24,080 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:48:24,080 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:48:24,080 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:48:24,081 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:48:24,081 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:48:24,081 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:48:24,081 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:48:24,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:48:24,082 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:48:24,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:48:24,082 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:48:24,082 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:48:24,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:48:24,083 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:48:24,083 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:48:24,083 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:48:24,084 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_8605a062-2847-4b93-8ceb-9f64b5293212/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8605a062-2847-4b93-8ceb-9f64b5293212/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ecda181bd3fe1882667151a04232fb9d04292dd6ca3491d98fdc8de5d539856a [2022-11-18 20:48:24,372 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:48:24,393 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:48:24,396 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:48:24,397 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:48:24,397 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:48:24,399 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8605a062-2847-4b93-8ceb-9f64b5293212/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/popl20-more-dec-subseq.wvr.c [2022-11-18 20:48:24,460 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8605a062-2847-4b93-8ceb-9f64b5293212/bin/uautomizer-TMbwUNV5ro/data/8fbc6be08/68842d51b93d41df8acd17b7d5578a23/FLAG610db0905 [2022-11-18 20:48:24,937 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:48:24,943 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8605a062-2847-4b93-8ceb-9f64b5293212/sv-benchmarks/c/weaver/popl20-more-dec-subseq.wvr.c [2022-11-18 20:48:24,953 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8605a062-2847-4b93-8ceb-9f64b5293212/bin/uautomizer-TMbwUNV5ro/data/8fbc6be08/68842d51b93d41df8acd17b7d5578a23/FLAG610db0905 [2022-11-18 20:48:25,299 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8605a062-2847-4b93-8ceb-9f64b5293212/bin/uautomizer-TMbwUNV5ro/data/8fbc6be08/68842d51b93d41df8acd17b7d5578a23 [2022-11-18 20:48:25,301 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:48:25,302 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:48:25,304 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:48:25,304 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:48:25,308 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:48:25,309 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:48:25" (1/1) ... [2022-11-18 20:48:25,310 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d1c8013 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:48:25, skipping insertion in model container [2022-11-18 20:48:25,311 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:48:25" (1/1) ... [2022-11-18 20:48:25,318 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:48:25,336 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:48:25,604 WARN L234 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_8605a062-2847-4b93-8ceb-9f64b5293212/sv-benchmarks/c/weaver/popl20-more-dec-subseq.wvr.c[2924,2937] [2022-11-18 20:48:25,612 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:48:25,626 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:48:25,669 WARN L234 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_8605a062-2847-4b93-8ceb-9f64b5293212/sv-benchmarks/c/weaver/popl20-more-dec-subseq.wvr.c[2924,2937] [2022-11-18 20:48:25,674 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:48:25,691 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:48:25,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:48:25 WrapperNode [2022-11-18 20:48:25,692 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:48:25,694 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:48:25,694 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:48:25,694 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:48:25,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:48:25" (1/1) ... [2022-11-18 20:48:25,720 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:48:25" (1/1) ... [2022-11-18 20:48:25,766 INFO L138 Inliner]: procedures = 24, calls = 45, calls flagged for inlining = 11, calls inlined = 13, statements flattened = 201 [2022-11-18 20:48:25,767 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:48:25,767 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:48:25,768 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:48:25,768 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:48:25,777 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:48:25" (1/1) ... [2022-11-18 20:48:25,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:48:25" (1/1) ... [2022-11-18 20:48:25,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:48:25" (1/1) ... [2022-11-18 20:48:25,797 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:48:25" (1/1) ... [2022-11-18 20:48:25,803 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:48:25" (1/1) ... [2022-11-18 20:48:25,818 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:48:25" (1/1) ... [2022-11-18 20:48:25,820 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:48:25" (1/1) ... [2022-11-18 20:48:25,821 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:48:25" (1/1) ... [2022-11-18 20:48:25,824 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:48:25,825 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:48:25,825 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:48:25,825 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:48:25,831 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:48:25" (1/1) ... [2022-11-18 20:48:25,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:48:25,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8605a062-2847-4b93-8ceb-9f64b5293212/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:48:25,872 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8605a062-2847-4b93-8ceb-9f64b5293212/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:48:25,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8605a062-2847-4b93-8ceb-9f64b5293212/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:48:25,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:48:25,927 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 20:48:25,927 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 20:48:25,927 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 20:48:25,928 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 20:48:25,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:48:25,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:48:25,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:48:25,930 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 20:48:25,930 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 20:48:25,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:48:25,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:48:25,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:48:25,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:48:25,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:48:25,932 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:48:26,087 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:48:26,089 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:48:26,519 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:48:26,665 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:48:26,666 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-18 20:48:26,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:48:26 BoogieIcfgContainer [2022-11-18 20:48:26,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:48:26,670 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:48:26,670 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:48:26,676 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:48:26,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:48:25" (1/3) ... [2022-11-18 20:48:26,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ae85b20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:48:26, skipping insertion in model container [2022-11-18 20:48:26,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:48:25" (2/3) ... [2022-11-18 20:48:26,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ae85b20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:48:26, skipping insertion in model container [2022-11-18 20:48:26,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:48:26" (3/3) ... [2022-11-18 20:48:26,679 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-dec-subseq.wvr.c [2022-11-18 20:48:26,688 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:48:26,698 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:48:26,698 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-18 20:48:26,698 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:48:26,801 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 20:48:26,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 194 places, 202 transitions, 420 flow [2022-11-18 20:48:26,977 INFO L130 PetriNetUnfolder]: 15/200 cut-off events. [2022-11-18 20:48:26,977 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 20:48:26,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 200 events. 15/200 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 151 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 164. Up to 2 conditions per place. [2022-11-18 20:48:26,986 INFO L82 GeneralOperation]: Start removeDead. Operand has 194 places, 202 transitions, 420 flow [2022-11-18 20:48:27,002 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 174 places, 181 transitions, 371 flow [2022-11-18 20:48:27,018 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:48:27,027 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;@1de0aed6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:48:27,027 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-18 20:48:27,045 INFO L130 PetriNetUnfolder]: 3/73 cut-off events. [2022-11-18 20:48:27,045 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:48:27,045 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:27,046 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, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:27,047 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 20:48:27,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:27,052 INFO L85 PathProgramCache]: Analyzing trace with hash 440222467, now seen corresponding path program 1 times [2022-11-18 20:48:27,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:27,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098648679] [2022-11-18 20:48:27,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:27,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:27,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:27,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:27,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:27,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098648679] [2022-11-18 20:48:27,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098648679] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:27,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:27,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:48:27,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104883867] [2022-11-18 20:48:27,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:27,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:48:27,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:27,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:48:27,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:48:27,632 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 202 [2022-11-18 20:48:27,637 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 181 transitions, 371 flow. Second operand has 4 states, 4 states have (on average 155.5) internal successors, (622), 4 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:27,637 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:27,637 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 202 [2022-11-18 20:48:27,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:28,000 INFO L130 PetriNetUnfolder]: 65/374 cut-off events. [2022-11-18 20:48:28,000 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-11-18 20:48:28,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 553 conditions, 374 events. 65/374 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1058 event pairs, 28 based on Foata normal form. 28/326 useless extension candidates. Maximal degree in co-relation 281. Up to 78 conditions per place. [2022-11-18 20:48:28,009 INFO L137 encePairwiseOnDemand]: 178/202 looper letters, 52 selfloop transitions, 9 changer transitions 5/197 dead transitions. [2022-11-18 20:48:28,010 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 197 transitions, 534 flow [2022-11-18 20:48:28,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:48:28,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:48:28,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 853 transitions. [2022-11-18 20:48:28,029 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8445544554455445 [2022-11-18 20:48:28,030 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 853 transitions. [2022-11-18 20:48:28,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 853 transitions. [2022-11-18 20:48:28,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:28,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 853 transitions. [2022-11-18 20:48:28,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 170.6) internal successors, (853), 5 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:28,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 202.0) internal successors, (1212), 6 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:28,052 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 202.0) internal successors, (1212), 6 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:28,055 INFO L175 Difference]: Start difference. First operand has 174 places, 181 transitions, 371 flow. Second operand 5 states and 853 transitions. [2022-11-18 20:48:28,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 197 transitions, 534 flow [2022-11-18 20:48:28,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 197 transitions, 524 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:48:28,065 INFO L231 Difference]: Finished difference. Result has 176 places, 172 transitions, 401 flow [2022-11-18 20:48:28,067 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=401, PETRI_PLACES=176, PETRI_TRANSITIONS=172} [2022-11-18 20:48:28,071 INFO L288 CegarLoopForPetriNet]: 174 programPoint places, 2 predicate places. [2022-11-18 20:48:28,071 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 172 transitions, 401 flow [2022-11-18 20:48:28,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 155.5) internal successors, (622), 4 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:28,072 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:28,073 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:28,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:48:28,073 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 20:48:28,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:28,074 INFO L85 PathProgramCache]: Analyzing trace with hash -107263413, now seen corresponding path program 1 times [2022-11-18 20:48:28,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:28,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028110461] [2022-11-18 20:48:28,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:28,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:28,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:28,311 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:28,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:28,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028110461] [2022-11-18 20:48:28,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028110461] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:48:28,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913021447] [2022-11-18 20:48:28,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:28,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:48:28,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8605a062-2847-4b93-8ceb-9f64b5293212/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:48:28,318 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8605a062-2847-4b93-8ceb-9f64b5293212/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:48:28,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8605a062-2847-4b93-8ceb-9f64b5293212/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:48:28,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:28,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:48:28,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:48:28,584 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:28,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:48:28,663 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:28,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913021447] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:48:28,667 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:48:28,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 20:48:28,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247189167] [2022-11-18 20:48:28,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:48:28,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:48:28,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:28,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:48:28,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:48:28,686 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 202 [2022-11-18 20:48:28,689 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 172 transitions, 401 flow. Second operand has 12 states, 12 states have (on average 156.66666666666666) internal successors, (1880), 12 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:28,689 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:28,689 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 202 [2022-11-18 20:48:28,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:29,336 INFO L130 PetriNetUnfolder]: 161/807 cut-off events. [2022-11-18 20:48:29,336 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2022-11-18 20:48:29,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1276 conditions, 807 events. 161/807 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3532 event pairs, 70 based on Foata normal form. 6/648 useless extension candidates. Maximal degree in co-relation 812. Up to 71 conditions per place. [2022-11-18 20:48:29,348 INFO L137 encePairwiseOnDemand]: 187/202 looper letters, 106 selfloop transitions, 40 changer transitions 0/277 dead transitions. [2022-11-18 20:48:29,348 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 277 transitions, 969 flow [2022-11-18 20:48:29,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 20:48:29,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 20:48:29,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2924 transitions. [2022-11-18 20:48:29,356 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8041804180418042 [2022-11-18 20:48:29,357 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2924 transitions. [2022-11-18 20:48:29,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2924 transitions. [2022-11-18 20:48:29,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:29,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2924 transitions. [2022-11-18 20:48:29,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 162.44444444444446) internal successors, (2924), 18 states have internal predecessors, (2924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:29,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 202.0) internal successors, (3838), 19 states have internal predecessors, (3838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:29,379 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 202.0) internal successors, (3838), 19 states have internal predecessors, (3838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:29,380 INFO L175 Difference]: Start difference. First operand has 176 places, 172 transitions, 401 flow. Second operand 18 states and 2924 transitions. [2022-11-18 20:48:29,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 277 transitions, 969 flow [2022-11-18 20:48:29,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 277 transitions, 964 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:48:29,393 INFO L231 Difference]: Finished difference. Result has 191 places, 199 transitions, 634 flow [2022-11-18 20:48:29,394 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=634, PETRI_PLACES=191, PETRI_TRANSITIONS=199} [2022-11-18 20:48:29,396 INFO L288 CegarLoopForPetriNet]: 174 programPoint places, 17 predicate places. [2022-11-18 20:48:29,396 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 199 transitions, 634 flow [2022-11-18 20:48:29,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 156.66666666666666) internal successors, (1880), 12 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:29,398 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:29,399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:29,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8605a062-2847-4b93-8ceb-9f64b5293212/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:48:29,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8605a062-2847-4b93-8ceb-9f64b5293212/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:48:29,606 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 20:48:29,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:29,607 INFO L85 PathProgramCache]: Analyzing trace with hash 969802020, now seen corresponding path program 1 times [2022-11-18 20:48:29,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:29,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720301163] [2022-11-18 20:48:29,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:29,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:29,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:29,799 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:29,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:29,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720301163] [2022-11-18 20:48:29,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720301163] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:48:29,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520644356] [2022-11-18 20:48:29,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:29,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:48:29,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8605a062-2847-4b93-8ceb-9f64b5293212/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:48:29,803 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8605a062-2847-4b93-8ceb-9f64b5293212/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:48:29,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8605a062-2847-4b93-8ceb-9f64b5293212/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:48:29,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:29,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:48:29,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:48:29,956 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:29,957 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:48:29,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520644356] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:29,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:48:29,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 20:48:29,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247591140] [2022-11-18 20:48:29,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:29,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:48:29,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:29,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:48:29,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:48:29,961 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 202 [2022-11-18 20:48:29,963 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 199 transitions, 634 flow. Second operand has 6 states, 6 states have (on average 156.33333333333334) internal successors, (938), 6 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:29,963 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:29,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 202 [2022-11-18 20:48:29,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:30,284 INFO L130 PetriNetUnfolder]: 161/799 cut-off events. [2022-11-18 20:48:30,284 INFO L131 PetriNetUnfolder]: For 136/136 co-relation queries the response was YES. [2022-11-18 20:48:30,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1313 conditions, 799 events. 161/799 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3452 event pairs, 70 based on Foata normal form. 8/642 useless extension candidates. Maximal degree in co-relation 1021. Up to 240 conditions per place. [2022-11-18 20:48:30,293 INFO L137 encePairwiseOnDemand]: 191/202 looper letters, 53 selfloop transitions, 27 changer transitions 0/211 dead transitions. [2022-11-18 20:48:30,293 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 211 transitions, 788 flow [2022-11-18 20:48:30,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:48:30,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:48:30,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1139 transitions. [2022-11-18 20:48:30,297 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8055162659123055 [2022-11-18 20:48:30,298 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1139 transitions. [2022-11-18 20:48:30,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1139 transitions. [2022-11-18 20:48:30,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:30,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1139 transitions. [2022-11-18 20:48:30,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 162.71428571428572) internal successors, (1139), 7 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:30,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 202.0) internal successors, (1616), 8 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:30,307 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 202.0) internal successors, (1616), 8 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:30,308 INFO L175 Difference]: Start difference. First operand has 191 places, 199 transitions, 634 flow. Second operand 7 states and 1139 transitions. [2022-11-18 20:48:30,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 211 transitions, 788 flow [2022-11-18 20:48:30,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 211 transitions, 714 flow, removed 26 selfloop flow, removed 5 redundant places. [2022-11-18 20:48:30,323 INFO L231 Difference]: Finished difference. Result has 186 places, 191 transitions, 560 flow [2022-11-18 20:48:30,323 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=560, PETRI_PLACES=186, PETRI_TRANSITIONS=191} [2022-11-18 20:48:30,326 INFO L288 CegarLoopForPetriNet]: 174 programPoint places, 12 predicate places. [2022-11-18 20:48:30,326 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 191 transitions, 560 flow [2022-11-18 20:48:30,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 156.33333333333334) internal successors, (938), 6 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:30,327 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:30,328 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:30,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8605a062-2847-4b93-8ceb-9f64b5293212/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:48:30,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8605a062-2847-4b93-8ceb-9f64b5293212/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-18 20:48:30,535 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 20:48:30,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:30,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1491966717, now seen corresponding path program 2 times [2022-11-18 20:48:30,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:30,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134603516] [2022-11-18 20:48:30,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:30,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:30,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:30,829 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:30,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:30,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134603516] [2022-11-18 20:48:30,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134603516] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:48:30,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233864885] [2022-11-18 20:48:30,830 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:48:30,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:48:30,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8605a062-2847-4b93-8ceb-9f64b5293212/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:48:30,832 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8605a062-2847-4b93-8ceb-9f64b5293212/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:48:30,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8605a062-2847-4b93-8ceb-9f64b5293212/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:48:30,931 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:48:30,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:48:30,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:48:30,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:48:31,125 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 20:48:31,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:48:31,304 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 20:48:31,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233864885] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:48:31,305 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:48:31,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-18 20:48:31,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103711418] [2022-11-18 20:48:31,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:48:31,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:48:31,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:31,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:48:31,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:48:31,311 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 202 [2022-11-18 20:48:31,314 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 191 transitions, 560 flow. Second operand has 18 states, 18 states have (on average 142.61111111111111) internal successors, (2567), 18 states have internal predecessors, (2567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:31,314 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:31,314 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 202 [2022-11-18 20:48:31,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:32,748 INFO L130 PetriNetUnfolder]: 141/913 cut-off events. [2022-11-18 20:48:32,748 INFO L131 PetriNetUnfolder]: For 154/154 co-relation queries the response was YES. [2022-11-18 20:48:32,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1453 conditions, 913 events. 141/913 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 4031 event pairs, 49 based on Foata normal form. 4/798 useless extension candidates. Maximal degree in co-relation 942. Up to 51 conditions per place. [2022-11-18 20:48:32,754 INFO L137 encePairwiseOnDemand]: 180/202 looper letters, 128 selfloop transitions, 65 changer transitions 2/309 dead transitions. [2022-11-18 20:48:32,755 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 309 transitions, 1265 flow [2022-11-18 20:48:32,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-18 20:48:32,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-11-18 20:48:32,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 7022 transitions. [2022-11-18 20:48:32,772 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7094362497474237 [2022-11-18 20:48:32,772 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 7022 transitions. [2022-11-18 20:48:32,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 7022 transitions. [2022-11-18 20:48:32,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:32,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 7022 transitions. [2022-11-18 20:48:32,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 143.30612244897958) internal successors, (7022), 49 states have internal predecessors, (7022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:32,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 202.0) internal successors, (10100), 50 states have internal predecessors, (10100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:32,820 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 202.0) internal successors, (10100), 50 states have internal predecessors, (10100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:32,821 INFO L175 Difference]: Start difference. First operand has 186 places, 191 transitions, 560 flow. Second operand 49 states and 7022 transitions. [2022-11-18 20:48:32,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 309 transitions, 1265 flow [2022-11-18 20:48:32,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 309 transitions, 1222 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:48:32,831 INFO L231 Difference]: Finished difference. Result has 230 places, 212 transitions, 767 flow [2022-11-18 20:48:32,832 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=767, PETRI_PLACES=230, PETRI_TRANSITIONS=212} [2022-11-18 20:48:32,833 INFO L288 CegarLoopForPetriNet]: 174 programPoint places, 56 predicate places. [2022-11-18 20:48:32,834 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 212 transitions, 767 flow [2022-11-18 20:48:32,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 142.61111111111111) internal successors, (2567), 18 states have internal predecessors, (2567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:32,835 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:32,836 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:32,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8605a062-2847-4b93-8ceb-9f64b5293212/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:48:33,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8605a062-2847-4b93-8ceb-9f64b5293212/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:48:33,047 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 20:48:33,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:33,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1236121836, now seen corresponding path program 1 times [2022-11-18 20:48:33,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:33,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192091001] [2022-11-18 20:48:33,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:33,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:33,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:33,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:33,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:33,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192091001] [2022-11-18 20:48:33,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192091001] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:33,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:33,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:48:33,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673749599] [2022-11-18 20:48:33,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:33,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:48:33,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:33,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:48:33,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:48:33,193 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 202 [2022-11-18 20:48:33,194 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 212 transitions, 767 flow. Second operand has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:33,194 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:33,195 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 202 [2022-11-18 20:48:33,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:33,628 INFO L130 PetriNetUnfolder]: 491/1956 cut-off events. [2022-11-18 20:48:33,628 INFO L131 PetriNetUnfolder]: For 194/243 co-relation queries the response was YES. [2022-11-18 20:48:33,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3225 conditions, 1956 events. 491/1956 cut-off events. For 194/243 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 12091 event pairs, 119 based on Foata normal form. 0/1711 useless extension candidates. Maximal degree in co-relation 2948. Up to 519 conditions per place. [2022-11-18 20:48:33,638 INFO L137 encePairwiseOnDemand]: 198/202 looper letters, 20 selfloop transitions, 2 changer transitions 6/223 dead transitions. [2022-11-18 20:48:33,638 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 223 transitions, 844 flow [2022-11-18 20:48:33,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:48:33,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:48:33,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 541 transitions. [2022-11-18 20:48:33,640 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8927392739273927 [2022-11-18 20:48:33,641 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 541 transitions. [2022-11-18 20:48:33,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 541 transitions. [2022-11-18 20:48:33,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:33,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 541 transitions. [2022-11-18 20:48:33,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:33,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:33,644 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:33,645 INFO L175 Difference]: Start difference. First operand has 230 places, 212 transitions, 767 flow. Second operand 3 states and 541 transitions. [2022-11-18 20:48:33,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 223 transitions, 844 flow [2022-11-18 20:48:33,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 223 transitions, 761 flow, removed 9 selfloop flow, removed 15 redundant places. [2022-11-18 20:48:33,651 INFO L231 Difference]: Finished difference. Result has 216 places, 209 transitions, 689 flow [2022-11-18 20:48:33,652 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=684, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=689, PETRI_PLACES=216, PETRI_TRANSITIONS=209} [2022-11-18 20:48:33,654 INFO L288 CegarLoopForPetriNet]: 174 programPoint places, 42 predicate places. [2022-11-18 20:48:33,655 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 209 transitions, 689 flow [2022-11-18 20:48:33,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:33,655 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:33,655 INFO L209 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:33,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:48:33,656 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 20:48:33,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:33,657 INFO L85 PathProgramCache]: Analyzing trace with hash -616393328, now seen corresponding path program 1 times [2022-11-18 20:48:33,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:33,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730347065] [2022-11-18 20:48:33,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:33,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:33,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:33,786 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:33,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:33,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730347065] [2022-11-18 20:48:33,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730347065] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:48:33,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675147733] [2022-11-18 20:48:33,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:33,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:48:33,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8605a062-2847-4b93-8ceb-9f64b5293212/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:48:33,789 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8605a062-2847-4b93-8ceb-9f64b5293212/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:48:33,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8605a062-2847-4b93-8ceb-9f64b5293212/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:48:33,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:33,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:48:33,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:48:34,213 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 20:48:34,214 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:48:34,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675147733] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:34,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:48:34,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [3] total 9 [2022-11-18 20:48:34,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594233326] [2022-11-18 20:48:34,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:34,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:48:34,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:34,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:48:34,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:48:34,218 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 202 [2022-11-18 20:48:34,219 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 209 transitions, 689 flow. Second operand has 7 states, 7 states have (on average 147.71428571428572) internal successors, (1034), 7 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:34,219 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:34,219 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 202 [2022-11-18 20:48:34,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:34,596 INFO L130 PetriNetUnfolder]: 303/1536 cut-off events. [2022-11-18 20:48:34,597 INFO L131 PetriNetUnfolder]: For 227/227 co-relation queries the response was YES. [2022-11-18 20:48:34,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2568 conditions, 1536 events. 303/1536 cut-off events. For 227/227 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 8777 event pairs, 180 based on Foata normal form. 4/1389 useless extension candidates. Maximal degree in co-relation 2261. Up to 575 conditions per place. [2022-11-18 20:48:34,606 INFO L137 encePairwiseOnDemand]: 192/202 looper letters, 69 selfloop transitions, 13 changer transitions 7/216 dead transitions. [2022-11-18 20:48:34,606 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 216 transitions, 882 flow [2022-11-18 20:48:34,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:48:34,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 20:48:34,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1204 transitions. [2022-11-18 20:48:34,610 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.745049504950495 [2022-11-18 20:48:34,610 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1204 transitions. [2022-11-18 20:48:34,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1204 transitions. [2022-11-18 20:48:34,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:34,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1204 transitions. [2022-11-18 20:48:34,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 150.5) internal successors, (1204), 8 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:34,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 202.0) internal successors, (1818), 9 states have internal predecessors, (1818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:34,618 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 202.0) internal successors, (1818), 9 states have internal predecessors, (1818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:34,618 INFO L175 Difference]: Start difference. First operand has 216 places, 209 transitions, 689 flow. Second operand 8 states and 1204 transitions. [2022-11-18 20:48:34,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 216 transitions, 882 flow [2022-11-18 20:48:34,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 216 transitions, 880 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:48:34,625 INFO L231 Difference]: Finished difference. Result has 218 places, 207 transitions, 707 flow [2022-11-18 20:48:34,625 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=707, PETRI_PLACES=218, PETRI_TRANSITIONS=207} [2022-11-18 20:48:34,626 INFO L288 CegarLoopForPetriNet]: 174 programPoint places, 44 predicate places. [2022-11-18 20:48:34,626 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 207 transitions, 707 flow [2022-11-18 20:48:34,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 147.71428571428572) internal successors, (1034), 7 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:34,627 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:34,627 INFO L209 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:34,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8605a062-2847-4b93-8ceb-9f64b5293212/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:48:34,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8605a062-2847-4b93-8ceb-9f64b5293212/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:48:34,833 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 20:48:34,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:34,834 INFO L85 PathProgramCache]: Analyzing trace with hash 689450420, now seen corresponding path program 1 times [2022-11-18 20:48:34,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:34,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843989452] [2022-11-18 20:48:34,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:34,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:34,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:34,949 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:48:34,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:34,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843989452] [2022-11-18 20:48:34,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843989452] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:48:34,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943449527] [2022-11-18 20:48:34,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:34,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:48:34,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8605a062-2847-4b93-8ceb-9f64b5293212/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:48:34,951 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8605a062-2847-4b93-8ceb-9f64b5293212/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:48:34,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8605a062-2847-4b93-8ceb-9f64b5293212/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:48:35,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:35,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 20:48:35,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:48:35,480 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:35,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:48:35,853 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:35,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943449527] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:48:35,854 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:48:35,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 10, 10] total 19 [2022-11-18 20:48:35,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978741331] [2022-11-18 20:48:35,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:48:35,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:48:35,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:35,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:48:35,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:48:35,860 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 202 [2022-11-18 20:48:35,863 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 207 transitions, 707 flow. Second operand has 19 states, 19 states have (on average 138.68421052631578) internal successors, (2635), 19 states have internal predecessors, (2635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:35,863 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:35,863 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 202 [2022-11-18 20:48:35,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:36,767 INFO L130 PetriNetUnfolder]: 406/1606 cut-off events. [2022-11-18 20:48:36,767 INFO L131 PetriNetUnfolder]: For 259/259 co-relation queries the response was YES. [2022-11-18 20:48:36,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2928 conditions, 1606 events. 406/1606 cut-off events. For 259/259 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 8911 event pairs, 72 based on Foata normal form. 4/1484 useless extension candidates. Maximal degree in co-relation 2593. Up to 260 conditions per place. [2022-11-18 20:48:36,779 INFO L137 encePairwiseOnDemand]: 186/202 looper letters, 92 selfloop transitions, 32 changer transitions 16/247 dead transitions. [2022-11-18 20:48:36,780 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 247 transitions, 1090 flow [2022-11-18 20:48:36,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 20:48:36,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-18 20:48:36,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2239 transitions. [2022-11-18 20:48:36,789 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.692759900990099 [2022-11-18 20:48:36,789 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2239 transitions. [2022-11-18 20:48:36,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2239 transitions. [2022-11-18 20:48:36,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:36,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2239 transitions. [2022-11-18 20:48:36,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 139.9375) internal successors, (2239), 16 states have internal predecessors, (2239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:36,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 202.0) internal successors, (3434), 17 states have internal predecessors, (3434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:36,817 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 202.0) internal successors, (3434), 17 states have internal predecessors, (3434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:36,818 INFO L175 Difference]: Start difference. First operand has 218 places, 207 transitions, 707 flow. Second operand 16 states and 2239 transitions. [2022-11-18 20:48:36,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 247 transitions, 1090 flow [2022-11-18 20:48:36,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 247 transitions, 1056 flow, removed 4 selfloop flow, removed 7 redundant places. [2022-11-18 20:48:36,826 INFO L231 Difference]: Finished difference. Result has 228 places, 208 transitions, 765 flow [2022-11-18 20:48:36,827 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=679, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=765, PETRI_PLACES=228, PETRI_TRANSITIONS=208} [2022-11-18 20:48:36,828 INFO L288 CegarLoopForPetriNet]: 174 programPoint places, 54 predicate places. [2022-11-18 20:48:36,828 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 208 transitions, 765 flow [2022-11-18 20:48:36,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 138.68421052631578) internal successors, (2635), 19 states have internal predecessors, (2635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:36,830 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:36,830 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:36,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8605a062-2847-4b93-8ceb-9f64b5293212/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:48:37,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8605a062-2847-4b93-8ceb-9f64b5293212/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:48:37,037 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 20:48:37,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:37,038 INFO L85 PathProgramCache]: Analyzing trace with hash -968205292, now seen corresponding path program 2 times [2022-11-18 20:48:37,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:37,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503036530] [2022-11-18 20:48:37,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:37,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:37,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:37,184 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-18 20:48:37,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:37,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503036530] [2022-11-18 20:48:37,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503036530] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:48:37,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372416638] [2022-11-18 20:48:37,186 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:48:37,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:48:37,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8605a062-2847-4b93-8ceb-9f64b5293212/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:48:37,187 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8605a062-2847-4b93-8ceb-9f64b5293212/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:48:37,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8605a062-2847-4b93-8ceb-9f64b5293212/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:48:37,316 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:48:37,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:48:37,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:48:37,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:48:37,533 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 20:48:37,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:48:37,759 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 20:48:37,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372416638] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:48:37,760 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:48:37,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-18 20:48:37,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071668328] [2022-11-18 20:48:37,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:48:37,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:48:37,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:37,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:48:37,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:48:37,764 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 202 [2022-11-18 20:48:37,765 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 208 transitions, 765 flow. Second operand has 8 states, 8 states have (on average 168.125) internal successors, (1345), 8 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:37,766 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:37,766 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 202 [2022-11-18 20:48:37,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:38,224 INFO L130 PetriNetUnfolder]: 503/1812 cut-off events. [2022-11-18 20:48:38,224 INFO L131 PetriNetUnfolder]: For 465/465 co-relation queries the response was YES. [2022-11-18 20:48:38,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3391 conditions, 1812 events. 503/1812 cut-off events. For 465/465 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 10640 event pairs, 60 based on Foata normal form. 0/1697 useless extension candidates. Maximal degree in co-relation 3100. Up to 220 conditions per place. [2022-11-18 20:48:38,232 INFO L137 encePairwiseOnDemand]: 195/202 looper letters, 9 selfloop transitions, 4 changer transitions 85/237 dead transitions. [2022-11-18 20:48:38,232 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 237 transitions, 951 flow [2022-11-18 20:48:38,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:48:38,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:48:38,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1528 transitions. [2022-11-18 20:48:38,235 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8404840484048405 [2022-11-18 20:48:38,235 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1528 transitions. [2022-11-18 20:48:38,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1528 transitions. [2022-11-18 20:48:38,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:38,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1528 transitions. [2022-11-18 20:48:38,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 169.77777777777777) internal successors, (1528), 9 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:38,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 202.0) internal successors, (2020), 10 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:38,244 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 202.0) internal successors, (2020), 10 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:38,244 INFO L175 Difference]: Start difference. First operand has 228 places, 208 transitions, 765 flow. Second operand 9 states and 1528 transitions. [2022-11-18 20:48:38,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 237 transitions, 951 flow [2022-11-18 20:48:38,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 237 transitions, 892 flow, removed 6 selfloop flow, removed 11 redundant places. [2022-11-18 20:48:38,251 INFO L231 Difference]: Finished difference. Result has 222 places, 152 transitions, 581 flow [2022-11-18 20:48:38,252 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=708, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=581, PETRI_PLACES=222, PETRI_TRANSITIONS=152} [2022-11-18 20:48:38,253 INFO L288 CegarLoopForPetriNet]: 174 programPoint places, 48 predicate places. [2022-11-18 20:48:38,253 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 152 transitions, 581 flow [2022-11-18 20:48:38,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 168.125) internal successors, (1345), 8 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:38,254 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:38,254 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:38,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8605a062-2847-4b93-8ceb-9f64b5293212/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:48:38,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8605a062-2847-4b93-8ceb-9f64b5293212/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-18 20:48:38,461 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 20:48:38,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:38,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1899380846, now seen corresponding path program 1 times [2022-11-18 20:48:38,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:38,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803137335] [2022-11-18 20:48:38,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:38,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:38,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:38,824 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:38,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:38,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803137335] [2022-11-18 20:48:38,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803137335] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:48:38,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168847222] [2022-11-18 20:48:38,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:38,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:48:38,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8605a062-2847-4b93-8ceb-9f64b5293212/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:48:38,827 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8605a062-2847-4b93-8ceb-9f64b5293212/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:48:38,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8605a062-2847-4b93-8ceb-9f64b5293212/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 20:48:38,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:38,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 20:48:38,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:48:39,054 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:39,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:48:39,423 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:39,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168847222] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:48:39,424 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:48:39,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-11-18 20:48:39,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756101619] [2022-11-18 20:48:39,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:48:39,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 20:48:39,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:39,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 20:48:39,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2022-11-18 20:48:39,431 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 202 [2022-11-18 20:48:39,435 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 152 transitions, 581 flow. Second operand has 32 states, 32 states have (on average 157.28125) internal successors, (5033), 32 states have internal predecessors, (5033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:39,435 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:39,435 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 202 [2022-11-18 20:48:39,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:40,340 INFO L130 PetriNetUnfolder]: 16/493 cut-off events. [2022-11-18 20:48:40,341 INFO L131 PetriNetUnfolder]: For 454/454 co-relation queries the response was YES. [2022-11-18 20:48:40,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1102 conditions, 493 events. 16/493 cut-off events. For 454/454 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 795 event pairs, 0 based on Foata normal form. 8/501 useless extension candidates. Maximal degree in co-relation 1087. Up to 37 conditions per place. [2022-11-18 20:48:40,343 INFO L137 encePairwiseOnDemand]: 190/202 looper letters, 140 selfloop transitions, 102 changer transitions 0/331 dead transitions. [2022-11-18 20:48:40,343 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 331 transitions, 1844 flow [2022-11-18 20:48:40,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-18 20:48:40,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-18 20:48:40,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 7026 transitions. [2022-11-18 20:48:40,353 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7905040504050405 [2022-11-18 20:48:40,353 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 7026 transitions. [2022-11-18 20:48:40,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 7026 transitions. [2022-11-18 20:48:40,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:40,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 7026 transitions. [2022-11-18 20:48:40,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 159.6818181818182) internal successors, (7026), 44 states have internal predecessors, (7026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:40,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 202.0) internal successors, (9090), 45 states have internal predecessors, (9090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:40,407 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 202.0) internal successors, (9090), 45 states have internal predecessors, (9090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:40,407 INFO L175 Difference]: Start difference. First operand has 222 places, 152 transitions, 581 flow. Second operand 44 states and 7026 transitions. [2022-11-18 20:48:40,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 331 transitions, 1844 flow [2022-11-18 20:48:40,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 331 transitions, 1835 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:48:40,417 INFO L231 Difference]: Finished difference. Result has 214 places, 212 transitions, 1241 flow [2022-11-18 20:48:40,417 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=1241, PETRI_PLACES=214, PETRI_TRANSITIONS=212} [2022-11-18 20:48:40,418 INFO L288 CegarLoopForPetriNet]: 174 programPoint places, 40 predicate places. [2022-11-18 20:48:40,418 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 212 transitions, 1241 flow [2022-11-18 20:48:40,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 157.28125) internal successors, (5033), 32 states have internal predecessors, (5033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:40,420 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:40,420 INFO L209 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:40,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8605a062-2847-4b93-8ceb-9f64b5293212/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 20:48:40,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8605a062-2847-4b93-8ceb-9f64b5293212/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:48:40,632 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-18 20:48:40,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:40,632 INFO L85 PathProgramCache]: Analyzing trace with hash -213671314, now seen corresponding path program 2 times [2022-11-18 20:48:40,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:40,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235755927] [2022-11-18 20:48:40,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:40,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:40,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:41,769 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:41,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:41,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235755927] [2022-11-18 20:48:41,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235755927] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:48:41,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80100701] [2022-11-18 20:48:41,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:48:41,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:48:41,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8605a062-2847-4b93-8ceb-9f64b5293212/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:48:41,771 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8605a062-2847-4b93-8ceb-9f64b5293212/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:48:41,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8605a062-2847-4b93-8ceb-9f64b5293212/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 20:48:41,899 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:48:41,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:48:41,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:48:41,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:48:42,313 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2022-11-18 20:48:42,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:48:42,719 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2022-11-18 20:48:42,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80100701] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:48:42,719 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:48:42,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 7, 7] total 37 [2022-11-18 20:48:42,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438217230] [2022-11-18 20:48:42,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:48:42,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-18 20:48:42,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:42,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-18 20:48:42,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=1093, Unknown=0, NotChecked=0, Total=1406 [2022-11-18 20:48:42,727 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 202 [2022-11-18 20:48:42,731 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 212 transitions, 1241 flow. Second operand has 38 states, 38 states have (on average 137.97368421052633) internal successors, (5243), 38 states have internal predecessors, (5243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:42,731 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:42,731 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 202 [2022-11-18 20:48:42,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:46,455 INFO L130 PetriNetUnfolder]: 18/541 cut-off events. [2022-11-18 20:48:46,455 INFO L131 PetriNetUnfolder]: For 984/984 co-relation queries the response was YES. [2022-11-18 20:48:46,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1408 conditions, 541 events. 18/541 cut-off events. For 984/984 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 905 event pairs, 0 based on Foata normal form. 2/543 useless extension candidates. Maximal degree in co-relation 1386. Up to 42 conditions per place. [2022-11-18 20:48:46,457 INFO L137 encePairwiseOnDemand]: 184/202 looper letters, 0 selfloop transitions, 0 changer transitions 367/367 dead transitions. [2022-11-18 20:48:46,457 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 367 transitions, 2456 flow [2022-11-18 20:48:46,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2022-11-18 20:48:46,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2022-11-18 20:48:46,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 16113 transitions. [2022-11-18 20:48:46,479 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6759942943446887 [2022-11-18 20:48:46,479 INFO L72 ComplementDD]: Start complementDD. Operand 118 states and 16113 transitions. [2022-11-18 20:48:46,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 118 states and 16113 transitions. [2022-11-18 20:48:46,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:46,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 118 states and 16113 transitions. [2022-11-18 20:48:46,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 119 states, 118 states have (on average 136.55084745762713) internal successors, (16113), 118 states have internal predecessors, (16113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:46,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 119 states, 119 states have (on average 202.0) internal successors, (24038), 119 states have internal predecessors, (24038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:46,552 INFO L81 ComplementDD]: Finished complementDD. Result has 119 states, 119 states have (on average 202.0) internal successors, (24038), 119 states have internal predecessors, (24038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:46,553 INFO L175 Difference]: Start difference. First operand has 214 places, 212 transitions, 1241 flow. Second operand 118 states and 16113 transitions. [2022-11-18 20:48:46,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 367 transitions, 2456 flow [2022-11-18 20:48:46,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 367 transitions, 2333 flow, removed 3 selfloop flow, removed 29 redundant places. [2022-11-18 20:48:46,565 INFO L231 Difference]: Finished difference. Result has 301 places, 0 transitions, 0 flow [2022-11-18 20:48:46,565 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=1092, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=118, PETRI_FLOW=0, PETRI_PLACES=301, PETRI_TRANSITIONS=0} [2022-11-18 20:48:46,566 INFO L288 CegarLoopForPetriNet]: 174 programPoint places, 127 predicate places. [2022-11-18 20:48:46,566 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 0 transitions, 0 flow [2022-11-18 20:48:46,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 137.97368421052633) internal successors, (5243), 38 states have internal predecessors, (5243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:46,570 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2022-11-18 20:48:46,571 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2022-11-18 20:48:46,571 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2022-11-18 20:48:46,572 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2022-11-18 20:48:46,572 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2022-11-18 20:48:46,572 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2022-11-18 20:48:46,572 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2022-11-18 20:48:46,572 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2022-11-18 20:48:46,573 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2022-11-18 20:48:46,573 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2022-11-18 20:48:46,573 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 18 remaining) [2022-11-18 20:48:46,573 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 18 remaining) [2022-11-18 20:48:46,574 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2022-11-18 20:48:46,574 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2022-11-18 20:48:46,574 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2022-11-18 20:48:46,574 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2022-11-18 20:48:46,574 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2022-11-18 20:48:46,575 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2022-11-18 20:48:46,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8605a062-2847-4b93-8ceb-9f64b5293212/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 20:48:46,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8605a062-2847-4b93-8ceb-9f64b5293212/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:48:46,781 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1] [2022-11-18 20:48:46,785 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-18 20:48:46,786 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 20:48:46,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 08:48:46 BasicIcfg [2022-11-18 20:48:46,790 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 20:48:46,791 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 20:48:46,791 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 20:48:46,791 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 20:48:46,791 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:48:26" (3/4) ... [2022-11-18 20:48:46,794 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-18 20:48:46,799 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-18 20:48:46,799 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-18 20:48:46,804 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2022-11-18 20:48:46,805 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-18 20:48:46,805 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-18 20:48:46,805 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-18 20:48:46,843 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8605a062-2847-4b93-8ceb-9f64b5293212/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 20:48:46,844 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 20:48:46,844 INFO L158 Benchmark]: Toolchain (without parser) took 21542.11ms. Allocated memory was 127.9MB in the beginning and 287.3MB in the end (delta: 159.4MB). Free memory was 90.4MB in the beginning and 136.9MB in the end (delta: -46.4MB). Peak memory consumption was 112.1MB. Max. memory is 16.1GB. [2022-11-18 20:48:46,845 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 127.9MB. Free memory is still 106.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:48:46,845 INFO L158 Benchmark]: CACSL2BoogieTranslator took 389.02ms. Allocated memory is still 127.9MB. Free memory was 90.3MB in the beginning and 100.1MB in the end (delta: -9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 20:48:46,845 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.95ms. Allocated memory is still 127.9MB. Free memory was 100.1MB in the beginning and 98.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:48:46,846 INFO L158 Benchmark]: Boogie Preprocessor took 56.70ms. Allocated memory is still 127.9MB. Free memory was 98.0MB in the beginning and 95.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:48:46,846 INFO L158 Benchmark]: RCFGBuilder took 843.82ms. Allocated memory is still 127.9MB. Free memory was 95.9MB in the beginning and 67.1MB in the end (delta: 28.8MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-11-18 20:48:46,846 INFO L158 Benchmark]: TraceAbstraction took 20120.14ms. Allocated memory was 127.9MB in the beginning and 287.3MB in the end (delta: 159.4MB). Free memory was 66.5MB in the beginning and 140.0MB in the end (delta: -73.5MB). Peak memory consumption was 87.5MB. Max. memory is 16.1GB. [2022-11-18 20:48:46,847 INFO L158 Benchmark]: Witness Printer took 53.01ms. Allocated memory is still 287.3MB. Free memory was 140.0MB in the beginning and 136.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:48:46,849 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 127.9MB. Free memory is still 106.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 389.02ms. Allocated memory is still 127.9MB. Free memory was 90.3MB in the beginning and 100.1MB in the end (delta: -9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 72.95ms. Allocated memory is still 127.9MB. Free memory was 100.1MB in the beginning and 98.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.70ms. Allocated memory is still 127.9MB. Free memory was 98.0MB in the beginning and 95.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 843.82ms. Allocated memory is still 127.9MB. Free memory was 95.9MB in the beginning and 67.1MB in the end (delta: 28.8MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 20120.14ms. Allocated memory was 127.9MB in the beginning and 287.3MB in the end (delta: 159.4MB). Free memory was 66.5MB in the beginning and 140.0MB in the end (delta: -73.5MB). Peak memory consumption was 87.5MB. Max. memory is 16.1GB. * Witness Printer took 53.01ms. Allocated memory is still 287.3MB. Free memory was 140.0MB in the beginning and 136.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 53]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 53]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 73]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 73]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 117]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 117]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 117]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 117]: 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, 218 locations, 18 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: 19.9s, OverallIterations: 10, TraceHistogramMax: 15, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 10.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2868 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2868 mSDsluCounter, 519 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 408 mSDsCounter, 333 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2028 IncrementalHoareTripleChecker+Invalid, 2361 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 333 mSolverCounterUnsat, 111 mSDtfsCounter, 2028 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2080 GetRequests, 1712 SyntacticMatches, 14 SemanticMatches, 354 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10300 ImplicationChecksByTransitivity, 6.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1241occurred in iteration=9, InterpolantAutomatonStates: 277, 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, 6.3s InterpolantComputationTime, 2128 NumberOfCodeBlocks, 1938 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 2895 ConstructedInterpolants, 0 QuantifiedInterpolants, 7345 SizeOfPredicates, 47 NumberOfNonLiveVariables, 1740 ConjunctsInSsa, 59 ConjunctsInUnsatCore, 24 InterpolantComputations, 4 PerfectInterpolantSequences, 1852/3594 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 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-18 20:48:46,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8605a062-2847-4b93-8ceb-9f64b5293212/bin/uautomizer-TMbwUNV5ro/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