./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e831c5-2359-4e3d-a26b-7a9fe21779ff/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e831c5-2359-4e3d-a26b-7a9fe21779ff/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e831c5-2359-4e3d-a26b-7a9fe21779ff/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e831c5-2359-4e3d-a26b-7a9fe21779ff/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e831c5-2359-4e3d-a26b-7a9fe21779ff/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e831c5-2359-4e3d-a26b-7a9fe21779ff/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f484a00c18d1df7ceedc12992e35584262ebeacdaf88de41be4bc57f4fb5401d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:47:51,491 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:47:51,493 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:47:51,515 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:47:51,515 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:47:51,516 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:47:51,518 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:47:51,520 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:47:51,522 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:47:51,523 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:47:51,524 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:47:51,526 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:47:51,526 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:47:51,527 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:47:51,529 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:47:51,530 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:47:51,531 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:47:51,533 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:47:51,534 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:47:51,537 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:47:51,538 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:47:51,540 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:47:51,541 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:47:51,542 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:47:51,547 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:47:51,547 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:47:51,548 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:47:51,549 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:47:51,549 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:47:51,551 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:47:51,551 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:47:51,552 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:47:51,553 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:47:51,554 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:47:51,555 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:47:51,556 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:47:51,557 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:47:51,557 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:47:51,558 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:47:51,559 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:47:51,560 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:47:51,561 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e831c5-2359-4e3d-a26b-7a9fe21779ff/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 11:47:51,585 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:47:51,585 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:47:51,586 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:47:51,586 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:47:51,587 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:47:51,587 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:47:51,588 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:47:51,588 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:47:51,589 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:47:51,589 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:47:51,589 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:47:51,590 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:47:51,590 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:47:51,590 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:47:51,591 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:47:51,591 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:47:51,591 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:47:51,591 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:47:51,592 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 11:47:51,592 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:47:51,592 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:47:51,593 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:47:51,593 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:47:51,593 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:47:51,593 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:47:51,594 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:47:51,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:47:51,594 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:47:51,595 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:47:51,595 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:47:51,595 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:47:51,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:47:51,596 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:47:51,596 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:47:51,597 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:47:51,597 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_a4e831c5-2359-4e3d-a26b-7a9fe21779ff/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e831c5-2359-4e3d-a26b-7a9fe21779ff/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f484a00c18d1df7ceedc12992e35584262ebeacdaf88de41be4bc57f4fb5401d [2022-11-16 11:47:51,891 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:47:51,921 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:47:51,925 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:47:51,926 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:47:51,927 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:47:51,928 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e831c5-2359-4e3d-a26b-7a9fe21779ff/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2022-11-16 11:47:52,022 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e831c5-2359-4e3d-a26b-7a9fe21779ff/bin/uautomizer-tPACEb0tL8/data/5e47c5114/6ee9515169a342c3a9af5683b4155d8a/FLAG4ae824c20 [2022-11-16 11:47:52,587 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:47:52,588 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e831c5-2359-4e3d-a26b-7a9fe21779ff/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2022-11-16 11:47:52,598 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e831c5-2359-4e3d-a26b-7a9fe21779ff/bin/uautomizer-tPACEb0tL8/data/5e47c5114/6ee9515169a342c3a9af5683b4155d8a/FLAG4ae824c20 [2022-11-16 11:47:52,949 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e831c5-2359-4e3d-a26b-7a9fe21779ff/bin/uautomizer-tPACEb0tL8/data/5e47c5114/6ee9515169a342c3a9af5683b4155d8a [2022-11-16 11:47:52,951 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:47:52,953 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:47:52,955 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:47:52,955 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:47:52,965 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:47:52,966 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:47:52" (1/1) ... [2022-11-16 11:47:52,967 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e6d2568 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:47:52, skipping insertion in model container [2022-11-16 11:47:52,972 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:47:52" (1/1) ... [2022-11-16 11:47:52,980 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:47:53,018 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:47:53,267 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e831c5-2359-4e3d-a26b-7a9fe21779ff/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c[5846,5859] [2022-11-16 11:47:53,272 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:47:53,282 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:47:53,318 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e831c5-2359-4e3d-a26b-7a9fe21779ff/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c[5846,5859] [2022-11-16 11:47:53,322 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:47:53,337 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:47:53,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:47:53 WrapperNode [2022-11-16 11:47:53,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:47:53,339 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:47:53,339 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:47:53,339 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:47:53,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:47:53" (1/1) ... [2022-11-16 11:47:53,358 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:47:53" (1/1) ... [2022-11-16 11:47:53,400 INFO L138 Inliner]: procedures = 26, calls = 93, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 488 [2022-11-16 11:47:53,401 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:47:53,401 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:47:53,402 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:47:53,402 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:47:53,411 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:47:53" (1/1) ... [2022-11-16 11:47:53,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:47:53" (1/1) ... [2022-11-16 11:47:53,418 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:47:53" (1/1) ... [2022-11-16 11:47:53,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:47:53" (1/1) ... [2022-11-16 11:47:53,435 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:47:53" (1/1) ... [2022-11-16 11:47:53,442 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:47:53" (1/1) ... [2022-11-16 11:47:53,445 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:47:53" (1/1) ... [2022-11-16 11:47:53,447 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:47:53" (1/1) ... [2022-11-16 11:47:53,453 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:47:53,454 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:47:53,454 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:47:53,454 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:47:53,455 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:47:53" (1/1) ... [2022-11-16 11:47:53,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:47:53,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e831c5-2359-4e3d-a26b-7a9fe21779ff/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:47:53,487 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e831c5-2359-4e3d-a26b-7a9fe21779ff/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:47:53,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e831c5-2359-4e3d-a26b-7a9fe21779ff/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:47:53,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:47:53,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:47:53,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:47:53,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:47:53,541 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 11:47:53,541 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 11:47:53,541 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 11:47:53,541 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 11:47:53,541 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 11:47:53,542 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 11:47:53,542 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-16 11:47:53,542 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-16 11:47:53,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:47:53,542 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 11:47:53,542 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 11:47:53,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 11:47:53,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:47:53,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:47:53,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:47:53,545 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:47:53,735 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:47:53,737 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:47:54,721 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:47:55,158 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:47:55,158 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-11-16 11:47:55,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:47:55 BoogieIcfgContainer [2022-11-16 11:47:55,163 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:47:55,168 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:47:55,168 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:47:55,173 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:47:55,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:47:52" (1/3) ... [2022-11-16 11:47:55,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27082eb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:47:55, skipping insertion in model container [2022-11-16 11:47:55,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:47:53" (2/3) ... [2022-11-16 11:47:55,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27082eb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:47:55, skipping insertion in model container [2022-11-16 11:47:55,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:47:55" (3/3) ... [2022-11-16 11:47:55,177 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-commit-2.wvr.c [2022-11-16 11:47:55,187 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:47:55,200 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:47:55,200 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-11-16 11:47:55,201 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:47:55,422 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-16 11:47:55,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 355 places, 367 transitions, 766 flow [2022-11-16 11:47:55,674 INFO L130 PetriNetUnfolder]: 25/363 cut-off events. [2022-11-16 11:47:55,675 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-16 11:47:55,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 380 conditions, 363 events. 25/363 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 331 event pairs, 0 based on Foata normal form. 0/306 useless extension candidates. Maximal degree in co-relation 320. Up to 2 conditions per place. [2022-11-16 11:47:55,682 INFO L82 GeneralOperation]: Start removeDead. Operand has 355 places, 367 transitions, 766 flow [2022-11-16 11:47:55,691 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 329 places, 340 transitions, 701 flow [2022-11-16 11:47:55,701 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:47:55,709 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;@6d65072c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:47:55,709 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2022-11-16 11:47:55,724 INFO L130 PetriNetUnfolder]: 3/79 cut-off events. [2022-11-16 11:47:55,725 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:47:55,725 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:47:55,726 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] [2022-11-16 11:47:55,726 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-16 11:47:55,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:47:55,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1263171729, now seen corresponding path program 1 times [2022-11-16 11:47:55,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:47:55,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922781570] [2022-11-16 11:47:55,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:47:55,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:47:55,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:56,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:47:56,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:47:56,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922781570] [2022-11-16 11:47:56,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922781570] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:47:56,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:47:56,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:47:56,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075324108] [2022-11-16 11:47:56,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:47:56,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:47:56,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:47:56,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:47:56,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:47:56,214 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 367 [2022-11-16 11:47:56,223 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 340 transitions, 701 flow. Second operand has 4 states, 4 states have (on average 258.5) internal successors, (1034), 4 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) [2022-11-16 11:47:56,223 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:47:56,224 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 367 [2022-11-16 11:47:56,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:48:00,651 INFO L130 PetriNetUnfolder]: 6441/9073 cut-off events. [2022-11-16 11:48:00,651 INFO L131 PetriNetUnfolder]: For 1010/1014 co-relation queries the response was YES. [2022-11-16 11:48:00,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18984 conditions, 9073 events. 6441/9073 cut-off events. For 1010/1014 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 48870 event pairs, 4782 based on Foata normal form. 1660/6651 useless extension candidates. Maximal degree in co-relation 9063. Up to 4373 conditions per place. [2022-11-16 11:48:00,793 INFO L137 encePairwiseOnDemand]: 312/367 looper letters, 126 selfloop transitions, 19 changer transitions 8/378 dead transitions. [2022-11-16 11:48:00,793 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 378 transitions, 1088 flow [2022-11-16 11:48:00,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:48:00,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:48:00,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1486 transitions. [2022-11-16 11:48:00,851 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8098092643051771 [2022-11-16 11:48:00,852 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1486 transitions. [2022-11-16 11:48:00,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1486 transitions. [2022-11-16 11:48:00,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:48:00,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1486 transitions. [2022-11-16 11:48:00,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:00,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 367.0) internal successors, (2202), 6 states have internal predecessors, (2202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:00,886 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 367.0) internal successors, (2202), 6 states have internal predecessors, (2202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:00,887 INFO L175 Difference]: Start difference. First operand has 329 places, 340 transitions, 701 flow. Second operand 5 states and 1486 transitions. [2022-11-16 11:48:00,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 378 transitions, 1088 flow [2022-11-16 11:48:00,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 378 transitions, 1062 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-16 11:48:00,906 INFO L231 Difference]: Finished difference. Result has 317 places, 319 transitions, 757 flow [2022-11-16 11:48:00,909 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=757, PETRI_PLACES=317, PETRI_TRANSITIONS=319} [2022-11-16 11:48:00,915 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, -12 predicate places. [2022-11-16 11:48:00,915 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 319 transitions, 757 flow [2022-11-16 11:48:00,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 258.5) internal successors, (1034), 4 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) [2022-11-16 11:48:00,917 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:48:00,918 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:48:00,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:48:00,919 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-16 11:48:00,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:48:00,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1733564895, now seen corresponding path program 1 times [2022-11-16 11:48:00,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:48:00,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533982028] [2022-11-16 11:48:00,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:48:00,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:48:01,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:01,190 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:48:01,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:48:01,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533982028] [2022-11-16 11:48:01,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533982028] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:48:01,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435916245] [2022-11-16 11:48:01,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:48:01,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:48:01,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e831c5-2359-4e3d-a26b-7a9fe21779ff/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:48:01,198 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e831c5-2359-4e3d-a26b-7a9fe21779ff/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:48:01,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e831c5-2359-4e3d-a26b-7a9fe21779ff/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:48:01,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:01,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:48:01,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:48:01,520 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:48:01,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:48:01,603 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:48:01,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435916245] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:48:01,604 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:48:01,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 11:48:01,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911015753] [2022-11-16 11:48:01,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:48:01,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:48:01,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:48:01,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:48:01,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:48:01,616 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 367 [2022-11-16 11:48:01,621 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 319 transitions, 757 flow. Second operand has 12 states, 12 states have (on average 259.6666666666667) internal successors, (3116), 12 states have internal predecessors, (3116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:01,622 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:48:01,622 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 367 [2022-11-16 11:48:01,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:48:09,278 INFO L130 PetriNetUnfolder]: 16101/22486 cut-off events. [2022-11-16 11:48:09,279 INFO L131 PetriNetUnfolder]: For 479/489 co-relation queries the response was YES. [2022-11-16 11:48:09,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46628 conditions, 22486 events. 16101/22486 cut-off events. For 479/489 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 128857 event pairs, 11955 based on Foata normal form. 12/12333 useless extension candidates. Maximal degree in co-relation 36692. Up to 4362 conditions per place. [2022-11-16 11:48:09,695 INFO L137 encePairwiseOnDemand]: 336/367 looper letters, 267 selfloop transitions, 84 changer transitions 0/576 dead transitions. [2022-11-16 11:48:09,695 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 576 transitions, 2111 flow [2022-11-16 11:48:09,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 11:48:09,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 11:48:09,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4989 transitions. [2022-11-16 11:48:09,711 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7552225249772934 [2022-11-16 11:48:09,712 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4989 transitions. [2022-11-16 11:48:09,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4989 transitions. [2022-11-16 11:48:09,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:48:09,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4989 transitions. [2022-11-16 11:48:09,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 277.1666666666667) internal successors, (4989), 18 states have internal predecessors, (4989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:09,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 367.0) internal successors, (6973), 19 states have internal predecessors, (6973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:09,754 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 367.0) internal successors, (6973), 19 states have internal predecessors, (6973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:09,755 INFO L175 Difference]: Start difference. First operand has 317 places, 319 transitions, 757 flow. Second operand 18 states and 4989 transitions. [2022-11-16 11:48:09,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 576 transitions, 2111 flow [2022-11-16 11:48:09,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 576 transitions, 2100 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:48:09,777 INFO L231 Difference]: Finished difference. Result has 329 places, 376 transitions, 1248 flow [2022-11-16 11:48:09,778 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1248, PETRI_PLACES=329, PETRI_TRANSITIONS=376} [2022-11-16 11:48:09,780 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, 0 predicate places. [2022-11-16 11:48:09,780 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 376 transitions, 1248 flow [2022-11-16 11:48:09,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 259.6666666666667) internal successors, (3116), 12 states have internal predecessors, (3116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:09,785 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:48:09,786 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:48:09,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e831c5-2359-4e3d-a26b-7a9fe21779ff/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:48:10,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e831c5-2359-4e3d-a26b-7a9fe21779ff/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:48:10,004 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-16 11:48:10,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:48:10,005 INFO L85 PathProgramCache]: Analyzing trace with hash 2094064536, now seen corresponding path program 1 times [2022-11-16 11:48:10,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:48:10,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852430705] [2022-11-16 11:48:10,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:48:10,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:48:10,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:10,299 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:48:10,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:48:10,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852430705] [2022-11-16 11:48:10,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852430705] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:48:10,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682244397] [2022-11-16 11:48:10,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:48:10,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:48:10,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e831c5-2359-4e3d-a26b-7a9fe21779ff/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:48:10,304 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e831c5-2359-4e3d-a26b-7a9fe21779ff/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:48:10,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e831c5-2359-4e3d-a26b-7a9fe21779ff/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:48:10,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:10,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:48:10,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:48:10,550 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:48:10,550 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:48:10,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682244397] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:48:10,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:48:10,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 11:48:10,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346943292] [2022-11-16 11:48:10,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:48:10,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:48:10,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:48:10,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:48:10,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:48:10,562 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 367 [2022-11-16 11:48:10,565 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 376 transitions, 1248 flow. Second operand has 6 states, 6 states have (on average 259.3333333333333) internal successors, (1556), 6 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:10,565 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:48:10,565 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 367 [2022-11-16 11:48:10,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:48:17,053 INFO L130 PetriNetUnfolder]: 16101/22470 cut-off events. [2022-11-16 11:48:17,054 INFO L131 PetriNetUnfolder]: For 689/699 co-relation queries the response was YES. [2022-11-16 11:48:17,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46703 conditions, 22470 events. 16101/22470 cut-off events. For 689/699 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 129097 event pairs, 11955 based on Foata normal form. 16/12321 useless extension candidates. Maximal degree in co-relation 37304. Up to 17348 conditions per place. [2022-11-16 11:48:17,327 INFO L137 encePairwiseOnDemand]: 344/367 looper letters, 127 selfloop transitions, 59 changer transitions 0/411 dead transitions. [2022-11-16 11:48:17,327 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 411 transitions, 1630 flow [2022-11-16 11:48:17,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:48:17,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:48:17,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1944 transitions. [2022-11-16 11:48:17,332 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7567146749708058 [2022-11-16 11:48:17,334 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1944 transitions. [2022-11-16 11:48:17,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1944 transitions. [2022-11-16 11:48:17,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:48:17,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1944 transitions. [2022-11-16 11:48:17,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 277.7142857142857) internal successors, (1944), 7 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:17,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 367.0) internal successors, (2936), 8 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:17,347 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 367.0) internal successors, (2936), 8 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:17,347 INFO L175 Difference]: Start difference. First operand has 329 places, 376 transitions, 1248 flow. Second operand 7 states and 1944 transitions. [2022-11-16 11:48:17,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 411 transitions, 1630 flow [2022-11-16 11:48:17,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 411 transitions, 1472 flow, removed 56 selfloop flow, removed 5 redundant places. [2022-11-16 11:48:17,363 INFO L231 Difference]: Finished difference. Result has 322 places, 360 transitions, 1100 flow [2022-11-16 11:48:17,364 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=982, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1100, PETRI_PLACES=322, PETRI_TRANSITIONS=360} [2022-11-16 11:48:17,366 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, -7 predicate places. [2022-11-16 11:48:17,367 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 360 transitions, 1100 flow [2022-11-16 11:48:17,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 259.3333333333333) internal successors, (1556), 6 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:17,368 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:48:17,368 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:48:17,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e831c5-2359-4e3d-a26b-7a9fe21779ff/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:48:17,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e831c5-2359-4e3d-a26b-7a9fe21779ff/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:48:17,574 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-16 11:48:17,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:48:17,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1657635695, now seen corresponding path program 2 times [2022-11-16 11:48:17,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:48:17,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233838139] [2022-11-16 11:48:17,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:48:17,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:48:17,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:17,860 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:48:17,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:48:17,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233838139] [2022-11-16 11:48:17,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233838139] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:48:17,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275584990] [2022-11-16 11:48:17,861 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:48:17,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:48:17,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e831c5-2359-4e3d-a26b-7a9fe21779ff/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:48:17,868 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e831c5-2359-4e3d-a26b-7a9fe21779ff/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:48:17,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e831c5-2359-4e3d-a26b-7a9fe21779ff/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:48:18,015 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:48:18,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:48:18,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:48:18,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:48:18,207 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 11:48:18,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:48:18,405 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 11:48:18,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275584990] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:48:18,405 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:48:18,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-16 11:48:18,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130860538] [2022-11-16 11:48:18,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:48:18,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:48:18,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:48:18,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:48:18,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:48:18,412 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 367 [2022-11-16 11:48:18,417 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 360 transitions, 1100 flow. Second operand has 18 states, 18 states have (on average 235.61111111111111) internal successors, (4241), 18 states have internal predecessors, (4241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:18,417 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:48:18,417 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 367 [2022-11-16 11:48:18,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:48:22,967 INFO L130 PetriNetUnfolder]: 7988/11916 cut-off events. [2022-11-16 11:48:22,968 INFO L131 PetriNetUnfolder]: For 595/602 co-relation queries the response was YES. [2022-11-16 11:48:23,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24616 conditions, 11916 events. 7988/11916 cut-off events. For 595/602 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 62830 event pairs, 5306 based on Foata normal form. 8/8466 useless extension candidates. Maximal degree in co-relation 20160. Up to 1593 conditions per place. [2022-11-16 11:48:23,077 INFO L137 encePairwiseOnDemand]: 325/367 looper letters, 333 selfloop transitions, 129 changer transitions 0/662 dead transitions. [2022-11-16 11:48:23,077 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 662 transitions, 2819 flow [2022-11-16 11:48:23,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-16 11:48:23,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-11-16 11:48:23,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 11880 transitions. [2022-11-16 11:48:23,103 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6606239225935606 [2022-11-16 11:48:23,103 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 11880 transitions. [2022-11-16 11:48:23,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 11880 transitions. [2022-11-16 11:48:23,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:48:23,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 11880 transitions. [2022-11-16 11:48:23,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 242.44897959183675) internal successors, (11880), 49 states have internal predecessors, (11880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:23,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 367.0) internal successors, (18350), 50 states have internal predecessors, (18350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:23,190 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 367.0) internal successors, (18350), 50 states have internal predecessors, (18350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:23,191 INFO L175 Difference]: Start difference. First operand has 322 places, 360 transitions, 1100 flow. Second operand 49 states and 11880 transitions. [2022-11-16 11:48:23,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 662 transitions, 2819 flow [2022-11-16 11:48:23,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 662 transitions, 2724 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:48:23,206 INFO L231 Difference]: Finished difference. Result has 362 places, 409 transitions, 1559 flow [2022-11-16 11:48:23,208 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=1004, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=1559, PETRI_PLACES=362, PETRI_TRANSITIONS=409} [2022-11-16 11:48:23,209 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, 33 predicate places. [2022-11-16 11:48:23,210 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 409 transitions, 1559 flow [2022-11-16 11:48:23,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 235.61111111111111) internal successors, (4241), 18 states have internal predecessors, (4241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:23,211 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:48:23,212 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:48:23,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e831c5-2359-4e3d-a26b-7a9fe21779ff/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:48:23,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e831c5-2359-4e3d-a26b-7a9fe21779ff/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:48:23,417 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-16 11:48:23,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:48:23,418 INFO L85 PathProgramCache]: Analyzing trace with hash -730684281, now seen corresponding path program 1 times [2022-11-16 11:48:23,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:48:23,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212597035] [2022-11-16 11:48:23,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:48:23,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:48:23,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:23,962 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:48:23,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:48:23,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212597035] [2022-11-16 11:48:23,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212597035] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:48:23,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389596709] [2022-11-16 11:48:23,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:48:23,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:48:23,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e831c5-2359-4e3d-a26b-7a9fe21779ff/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:48:23,967 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e831c5-2359-4e3d-a26b-7a9fe21779ff/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:48:23,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e831c5-2359-4e3d-a26b-7a9fe21779ff/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:48:24,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:24,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-16 11:48:24,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:48:24,254 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:48:24,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:48:24,605 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:48:24,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389596709] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:48:24,605 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:48:24,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-11-16 11:48:24,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437937181] [2022-11-16 11:48:24,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:48:24,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-16 11:48:24,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:48:24,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-16 11:48:24,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2022-11-16 11:48:24,614 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 367 [2022-11-16 11:48:24,621 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 409 transitions, 1559 flow. Second operand has 32 states, 32 states have (on average 260.28125) internal successors, (8329), 32 states have internal predecessors, (8329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:24,622 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:48:24,622 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 367 [2022-11-16 11:48:24,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:48:34,520 INFO L130 PetriNetUnfolder]: 17116/25419 cut-off events. [2022-11-16 11:48:34,521 INFO L131 PetriNetUnfolder]: For 1956/1971 co-relation queries the response was YES. [2022-11-16 11:48:34,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52818 conditions, 25419 events. 17116/25419 cut-off events. For 1956/1971 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 141638 event pairs, 11370 based on Foata normal form. 24/18093 useless extension candidates. Maximal degree in co-relation 52018. Up to 2625 conditions per place. [2022-11-16 11:48:34,711 INFO L137 encePairwiseOnDemand]: 341/367 looper letters, 686 selfloop transitions, 218 changer transitions 0/1135 dead transitions. [2022-11-16 11:48:34,712 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 1135 transitions, 5875 flow [2022-11-16 11:48:34,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-16 11:48:34,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-16 11:48:34,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 12236 transitions. [2022-11-16 11:48:34,744 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7577408967054744 [2022-11-16 11:48:34,744 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 12236 transitions. [2022-11-16 11:48:34,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 12236 transitions. [2022-11-16 11:48:34,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:48:34,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 12236 transitions. [2022-11-16 11:48:34,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 278.09090909090907) internal successors, (12236), 44 states have internal predecessors, (12236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:34,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 367.0) internal successors, (16515), 45 states have internal predecessors, (16515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:34,811 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 367.0) internal successors, (16515), 45 states have internal predecessors, (16515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:34,811 INFO L175 Difference]: Start difference. First operand has 362 places, 409 transitions, 1559 flow. Second operand 44 states and 12236 transitions. [2022-11-16 11:48:34,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 1135 transitions, 5875 flow [2022-11-16 11:48:34,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 1135 transitions, 5533 flow, removed 104 selfloop flow, removed 15 redundant places. [2022-11-16 11:48:34,843 INFO L231 Difference]: Finished difference. Result has 399 places, 535 transitions, 2771 flow [2022-11-16 11:48:34,844 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=1396, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=2771, PETRI_PLACES=399, PETRI_TRANSITIONS=535} [2022-11-16 11:48:34,847 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, 70 predicate places. [2022-11-16 11:48:34,847 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 535 transitions, 2771 flow [2022-11-16 11:48:34,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 260.28125) internal successors, (8329), 32 states have internal predecessors, (8329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:34,850 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:48:34,850 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:48:34,861 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e831c5-2359-4e3d-a26b-7a9fe21779ff/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-16 11:48:35,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e831c5-2359-4e3d-a26b-7a9fe21779ff/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:48:35,057 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-16 11:48:35,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:48:35,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1010340897, now seen corresponding path program 1 times [2022-11-16 11:48:35,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:48:35,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281183937] [2022-11-16 11:48:35,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:48:35,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:48:35,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:35,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:48:35,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:48:35,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281183937] [2022-11-16 11:48:35,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281183937] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:48:35,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:48:35,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:48:35,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669960810] [2022-11-16 11:48:35,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:48:35,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:48:35,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:48:35,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:48:35,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:48:35,366 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 367 [2022-11-16 11:48:35,367 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 535 transitions, 2771 flow. Second operand has 6 states, 6 states have (on average 261.1666666666667) internal successors, (1567), 6 states have internal predecessors, (1567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:35,368 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:48:35,368 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 367 [2022-11-16 11:48:35,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand