./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 6b4ec56b 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_5ffc59b9-bd17-4b93-a6d4-2ae503fb0288/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ffc59b9-bd17-4b93-a6d4-2ae503fb0288/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ffc59b9-bd17-4b93-a6d4-2ae503fb0288/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ffc59b9-bd17-4b93-a6d4-2ae503fb0288/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ffc59b9-bd17-4b93-a6d4-2ae503fb0288/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ffc59b9-bd17-4b93-a6d4-2ae503fb0288/bin/uautomizer-ug76WZFUDN --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-6b4ec56 [2022-11-20 11:08:26,538 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:08:26,541 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:08:26,563 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:08:26,564 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:08:26,565 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:08:26,567 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:08:26,569 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:08:26,572 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:08:26,573 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:08:26,575 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:08:26,577 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:08:26,577 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:08:26,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:08:26,581 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:08:26,582 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:08:26,584 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:08:26,585 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:08:26,587 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:08:26,590 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:08:26,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:08:26,594 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:08:26,595 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:08:26,597 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:08:26,601 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:08:26,602 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:08:26,603 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:08:26,604 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:08:26,605 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:08:26,606 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:08:26,607 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:08:26,608 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:08:26,610 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:08:26,611 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:08:26,612 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:08:26,613 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:08:26,614 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:08:26,615 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:08:26,615 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:08:26,617 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:08:26,618 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:08:26,619 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ffc59b9-bd17-4b93-a6d4-2ae503fb0288/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 11:08:26,648 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:08:26,648 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:08:26,649 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:08:26,649 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:08:26,650 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:08:26,651 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:08:26,652 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:08:26,652 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:08:26,653 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:08:26,653 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:08:26,654 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:08:26,654 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:08:26,655 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:08:26,655 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:08:26,655 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:08:26,656 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:08:26,656 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:08:26,657 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:08:26,657 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 11:08:26,658 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:08:26,658 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:08:26,659 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:08:26,659 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:08:26,659 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:08:26,660 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:08:26,660 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:08:26,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:08:26,661 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:08:26,662 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:08:26,662 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:08:26,662 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:08:26,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:08:26,663 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:08:26,663 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:08:26,664 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:08:26,664 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_5ffc59b9-bd17-4b93-a6d4-2ae503fb0288/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ffc59b9-bd17-4b93-a6d4-2ae503fb0288/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f484a00c18d1df7ceedc12992e35584262ebeacdaf88de41be4bc57f4fb5401d [2022-11-20 11:08:27,004 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:08:27,034 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:08:27,037 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:08:27,039 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:08:27,039 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:08:27,041 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ffc59b9-bd17-4b93-a6d4-2ae503fb0288/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2022-11-20 11:08:30,871 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:08:31,136 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:08:31,137 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ffc59b9-bd17-4b93-a6d4-2ae503fb0288/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2022-11-20 11:08:31,147 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ffc59b9-bd17-4b93-a6d4-2ae503fb0288/bin/uautomizer-ug76WZFUDN/data/ef7be228c/1e208ed4a5ca4b8dbe3ab32e7b6e41db/FLAGf64bf1423 [2022-11-20 11:08:31,166 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ffc59b9-bd17-4b93-a6d4-2ae503fb0288/bin/uautomizer-ug76WZFUDN/data/ef7be228c/1e208ed4a5ca4b8dbe3ab32e7b6e41db [2022-11-20 11:08:31,170 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:08:31,172 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:08:31,174 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:08:31,174 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:08:31,179 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:08:31,180 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:08:31" (1/1) ... [2022-11-20 11:08:31,182 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6417eacb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:08:31, skipping insertion in model container [2022-11-20 11:08:31,182 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:08:31" (1/1) ... [2022-11-20 11:08:31,192 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:08:31,223 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:08:31,472 WARN L237 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_5ffc59b9-bd17-4b93-a6d4-2ae503fb0288/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c[5846,5859] [2022-11-20 11:08:31,479 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:08:31,493 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:08:31,546 WARN L237 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_5ffc59b9-bd17-4b93-a6d4-2ae503fb0288/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c[5846,5859] [2022-11-20 11:08:31,551 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:08:31,570 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:08:31,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:08:31 WrapperNode [2022-11-20 11:08:31,571 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:08:31,572 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:08:31,572 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:08:31,573 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:08:31,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:08:31" (1/1) ... [2022-11-20 11:08:31,594 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:08:31" (1/1) ... [2022-11-20 11:08:31,652 INFO L138 Inliner]: procedures = 26, calls = 93, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 488 [2022-11-20 11:08:31,652 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:08:31,653 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:08:31,653 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:08:31,654 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:08:31,667 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:08:31" (1/1) ... [2022-11-20 11:08:31,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:08:31" (1/1) ... [2022-11-20 11:08:31,675 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:08:31" (1/1) ... [2022-11-20 11:08:31,676 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:08:31" (1/1) ... [2022-11-20 11:08:31,693 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:08:31" (1/1) ... [2022-11-20 11:08:31,701 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:08:31" (1/1) ... [2022-11-20 11:08:31,705 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:08:31" (1/1) ... [2022-11-20 11:08:31,708 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:08:31" (1/1) ... [2022-11-20 11:08:31,726 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:08:31,728 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:08:31,728 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:08:31,728 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:08:31,729 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:08:31" (1/1) ... [2022-11-20 11:08:31,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:08:31,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ffc59b9-bd17-4b93-a6d4-2ae503fb0288/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:08:31,772 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ffc59b9-bd17-4b93-a6d4-2ae503fb0288/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:08:31,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ffc59b9-bd17-4b93-a6d4-2ae503fb0288/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:08:31,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:08:31,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:08:31,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:08:31,826 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:08:31,826 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 11:08:31,826 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 11:08:31,827 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 11:08:31,827 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 11:08:31,827 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 11:08:31,827 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 11:08:31,827 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-20 11:08:31,828 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-20 11:08:31,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:08:31,828 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 11:08:31,828 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 11:08:31,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 11:08:31,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:08:31,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:08:31,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:08:31,831 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 11:08:32,004 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:08:32,007 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:08:33,075 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:08:33,635 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:08:33,636 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-11-20 11:08:33,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:08:33 BoogieIcfgContainer [2022-11-20 11:08:33,639 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:08:33,642 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:08:33,643 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:08:33,647 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:08:33,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:08:31" (1/3) ... [2022-11-20 11:08:33,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3011620f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:08:33, skipping insertion in model container [2022-11-20 11:08:33,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:08:31" (2/3) ... [2022-11-20 11:08:33,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3011620f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:08:33, skipping insertion in model container [2022-11-20 11:08:33,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:08:33" (3/3) ... [2022-11-20 11:08:33,651 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-commit-2.wvr.c [2022-11-20 11:08:33,664 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:08:33,678 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:08:33,678 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-11-20 11:08:33,679 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:08:33,870 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-20 11:08:33,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 355 places, 367 transitions, 766 flow [2022-11-20 11:08:34,206 INFO L130 PetriNetUnfolder]: 25/363 cut-off events. [2022-11-20 11:08:34,207 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-20 11:08:34,218 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 330 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. [2022-11-20 11:08:34,218 INFO L82 GeneralOperation]: Start removeDead. Operand has 355 places, 367 transitions, 766 flow [2022-11-20 11:08:34,233 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 329 places, 340 transitions, 701 flow [2022-11-20 11:08:34,251 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:08:34,259 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;@269e0cc6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:08:34,259 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2022-11-20 11:08:34,277 INFO L130 PetriNetUnfolder]: 3/79 cut-off events. [2022-11-20 11:08:34,277 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:08:34,278 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:08:34,279 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] [2022-11-20 11:08:34,279 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-20 11:08:34,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:08:34,289 INFO L85 PathProgramCache]: Analyzing trace with hash 867123507, now seen corresponding path program 1 times [2022-11-20 11:08:34,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:08:34,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977490037] [2022-11-20 11:08:34,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:08:34,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:08:34,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:34,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:08:34,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:08:34,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977490037] [2022-11-20 11:08:34,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977490037] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:08:34,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:08:34,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:08:34,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043052670] [2022-11-20 11:08:34,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:08:35,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:08:35,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:08:35,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:08:35,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:08:35,055 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 367 [2022-11-20 11:08:35,066 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) [2022-11-20 11:08:35,069 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:08:35,070 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 367 [2022-11-20 11:08:35,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:08:40,233 INFO L130 PetriNetUnfolder]: 6441/9073 cut-off events. [2022-11-20 11:08:40,233 INFO L131 PetriNetUnfolder]: For 1010/1014 co-relation queries the response was YES. [2022-11-20 11:08:40,272 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 48858 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. [2022-11-20 11:08:40,377 INFO L137 encePairwiseOnDemand]: 312/367 looper letters, 126 selfloop transitions, 19 changer transitions 8/378 dead transitions. [2022-11-20 11:08:40,377 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 378 transitions, 1088 flow [2022-11-20 11:08:40,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:08:40,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:08:40,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1486 transitions. [2022-11-20 11:08:40,408 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8098092643051771 [2022-11-20 11:08:40,409 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1486 transitions. [2022-11-20 11:08:40,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1486 transitions. [2022-11-20 11:08:40,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:08:40,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1486 transitions. [2022-11-20 11:08:40,429 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) [2022-11-20 11:08:40,445 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) [2022-11-20 11:08:40,447 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) [2022-11-20 11:08:40,450 INFO L175 Difference]: Start difference. First operand has 329 places, 340 transitions, 701 flow. Second operand 5 states and 1486 transitions. [2022-11-20 11:08:40,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 378 transitions, 1088 flow [2022-11-20 11:08:40,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 378 transitions, 1062 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-20 11:08:40,474 INFO L231 Difference]: Finished difference. Result has 317 places, 319 transitions, 757 flow [2022-11-20 11:08:40,477 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} [2022-11-20 11:08:40,488 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, -12 predicate places. [2022-11-20 11:08:40,488 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 319 transitions, 757 flow [2022-11-20 11:08:40,490 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) [2022-11-20 11:08:40,490 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:08:40,491 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] [2022-11-20 11:08:40,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:08:40,491 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-20 11:08:40,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:08:40,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1846259264, now seen corresponding path program 1 times [2022-11-20 11:08:40,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:08:40,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509241723] [2022-11-20 11:08:40,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:08:40,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:08:40,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:40,828 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:08:40,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:08:40,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509241723] [2022-11-20 11:08:40,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509241723] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:08:40,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462279693] [2022-11-20 11:08:40,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:08:40,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:08:40,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ffc59b9-bd17-4b93-a6d4-2ae503fb0288/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:08:40,835 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ffc59b9-bd17-4b93-a6d4-2ae503fb0288/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:08:40,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ffc59b9-bd17-4b93-a6d4-2ae503fb0288/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:08:41,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:41,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:08:41,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:08:41,215 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:08:41,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:08:41,294 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:08:41,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462279693] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:08:41,295 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:08:41,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-20 11:08:41,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974940813] [2022-11-20 11:08:41,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:08:41,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:08:41,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:08:41,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:08:41,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:08:41,304 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 367 [2022-11-20 11:08:41,309 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) [2022-11-20 11:08:41,309 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:08:41,309 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 367 [2022-11-20 11:08:41,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:08:51,769 INFO L130 PetriNetUnfolder]: 16101/22486 cut-off events. [2022-11-20 11:08:51,769 INFO L131 PetriNetUnfolder]: For 479/489 co-relation queries the response was YES. [2022-11-20 11:08:51,863 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 129216 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. [2022-11-20 11:08:52,090 INFO L137 encePairwiseOnDemand]: 336/367 looper letters, 267 selfloop transitions, 84 changer transitions 0/576 dead transitions. [2022-11-20 11:08:52,090 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 576 transitions, 2111 flow [2022-11-20 11:08:52,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 11:08:52,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 11:08:52,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4989 transitions. [2022-11-20 11:08:52,107 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7552225249772934 [2022-11-20 11:08:52,108 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4989 transitions. [2022-11-20 11:08:52,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4989 transitions. [2022-11-20 11:08:52,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:08:52,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4989 transitions. [2022-11-20 11:08:52,130 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) [2022-11-20 11:08:52,147 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) [2022-11-20 11:08:52,153 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) [2022-11-20 11:08:52,154 INFO L175 Difference]: Start difference. First operand has 317 places, 319 transitions, 757 flow. Second operand 18 states and 4989 transitions. [2022-11-20 11:08:52,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 576 transitions, 2111 flow [2022-11-20 11:08:52,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 576 transitions, 2100 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:08:52,180 INFO L231 Difference]: Finished difference. Result has 329 places, 376 transitions, 1248 flow [2022-11-20 11:08:52,181 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} [2022-11-20 11:08:52,182 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, 0 predicate places. [2022-11-20 11:08:52,182 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 376 transitions, 1248 flow [2022-11-20 11:08:52,187 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) [2022-11-20 11:08:52,188 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:08:52,189 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] [2022-11-20 11:08:52,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ffc59b9-bd17-4b93-a6d4-2ae503fb0288/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:08:52,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ffc59b9-bd17-4b93-a6d4-2ae503fb0288/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:08:52,397 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-20 11:08:52,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:08:52,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1399463769, now seen corresponding path program 1 times [2022-11-20 11:08:52,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:08:52,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279665706] [2022-11-20 11:08:52,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:08:52,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:08:52,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:52,755 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:08:52,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:08:52,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279665706] [2022-11-20 11:08:52,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279665706] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:08:52,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516197651] [2022-11-20 11:08:52,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:08:52,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:08:52,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ffc59b9-bd17-4b93-a6d4-2ae503fb0288/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:08:52,760 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ffc59b9-bd17-4b93-a6d4-2ae503fb0288/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:08:52,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ffc59b9-bd17-4b93-a6d4-2ae503fb0288/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:08:52,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:52,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:08:52,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:08:53,056 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:08:53,057 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:08:53,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516197651] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:08:53,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:08:53,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 11:08:53,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252248241] [2022-11-20 11:08:53,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:08:53,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:08:53,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:08:53,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:08:53,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:08:53,082 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 367 [2022-11-20 11:08:53,085 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) [2022-11-20 11:08:53,091 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:08:53,091 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 367 [2022-11-20 11:08:53,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:09:01,707 INFO L130 PetriNetUnfolder]: 16101/22470 cut-off events. [2022-11-20 11:09:01,708 INFO L131 PetriNetUnfolder]: For 689/699 co-relation queries the response was YES. [2022-11-20 11:09:01,828 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 129404 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. [2022-11-20 11:09:02,033 INFO L137 encePairwiseOnDemand]: 344/367 looper letters, 127 selfloop transitions, 59 changer transitions 0/411 dead transitions. [2022-11-20 11:09:02,034 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 411 transitions, 1630 flow [2022-11-20 11:09:02,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:09:02,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:09:02,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1944 transitions. [2022-11-20 11:09:02,041 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7567146749708058 [2022-11-20 11:09:02,042 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1944 transitions. [2022-11-20 11:09:02,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1944 transitions. [2022-11-20 11:09:02,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:09:02,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1944 transitions. [2022-11-20 11:09:02,051 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) [2022-11-20 11:09:02,058 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) [2022-11-20 11:09:02,060 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) [2022-11-20 11:09:02,060 INFO L175 Difference]: Start difference. First operand has 329 places, 376 transitions, 1248 flow. Second operand 7 states and 1944 transitions. [2022-11-20 11:09:02,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 411 transitions, 1630 flow [2022-11-20 11:09:02,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 411 transitions, 1472 flow, removed 56 selfloop flow, removed 5 redundant places. [2022-11-20 11:09:02,081 INFO L231 Difference]: Finished difference. Result has 322 places, 360 transitions, 1100 flow [2022-11-20 11:09:02,082 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} [2022-11-20 11:09:02,085 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, -7 predicate places. [2022-11-20 11:09:02,086 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 360 transitions, 1100 flow [2022-11-20 11:09:02,087 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) [2022-11-20 11:09:02,087 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:09:02,087 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] [2022-11-20 11:09:02,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ffc59b9-bd17-4b93-a6d4-2ae503fb0288/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:09:02,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ffc59b9-bd17-4b93-a6d4-2ae503fb0288/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:09:02,305 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-20 11:09:02,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:02,306 INFO L85 PathProgramCache]: Analyzing trace with hash 127637107, now seen corresponding path program 2 times [2022-11-20 11:09:02,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:09:02,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114341025] [2022-11-20 11:09:02,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:02,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:09:02,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:02,881 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:09:02,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:09:02,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114341025] [2022-11-20 11:09:02,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114341025] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:09:02,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8146712] [2022-11-20 11:09:02,883 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:09:02,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:09:02,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ffc59b9-bd17-4b93-a6d4-2ae503fb0288/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:09:02,892 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ffc59b9-bd17-4b93-a6d4-2ae503fb0288/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:09:02,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ffc59b9-bd17-4b93-a6d4-2ae503fb0288/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:09:03,083 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:09:03,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:09:03,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 11:09:03,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:09:03,357 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 11:09:03,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:09:03,621 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 11:09:03,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8146712] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:09:03,622 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:09:03,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-20 11:09:03,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547813098] [2022-11-20 11:09:03,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:09:03,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:09:03,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:09:03,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:09:03,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:09:03,633 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 367 [2022-11-20 11:09:03,641 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) [2022-11-20 11:09:03,641 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:09:03,642 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 367 [2022-11-20 11:09:03,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:09:10,084 INFO L130 PetriNetUnfolder]: 7988/11916 cut-off events. [2022-11-20 11:09:10,084 INFO L131 PetriNetUnfolder]: For 595/602 co-relation queries the response was YES. [2022-11-20 11:09:10,135 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 62832 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. [2022-11-20 11:09:10,242 INFO L137 encePairwiseOnDemand]: 325/367 looper letters, 333 selfloop transitions, 129 changer transitions 0/662 dead transitions. [2022-11-20 11:09:10,243 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 662 transitions, 2819 flow [2022-11-20 11:09:10,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-20 11:09:10,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-11-20 11:09:10,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 11880 transitions. [2022-11-20 11:09:10,283 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6606239225935606 [2022-11-20 11:09:10,283 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 11880 transitions. [2022-11-20 11:09:10,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 11880 transitions. [2022-11-20 11:09:10,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:09:10,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 11880 transitions. [2022-11-20 11:09:10,333 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) [2022-11-20 11:09:10,377 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) [2022-11-20 11:09:10,387 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) [2022-11-20 11:09:10,388 INFO L175 Difference]: Start difference. First operand has 322 places, 360 transitions, 1100 flow. Second operand 49 states and 11880 transitions. [2022-11-20 11:09:10,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 662 transitions, 2819 flow [2022-11-20 11:09:10,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 662 transitions, 2724 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 11:09:10,408 INFO L231 Difference]: Finished difference. Result has 362 places, 409 transitions, 1559 flow [2022-11-20 11:09:10,409 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} [2022-11-20 11:09:10,410 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, 33 predicate places. [2022-11-20 11:09:10,410 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 409 transitions, 1559 flow [2022-11-20 11:09:10,413 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) [2022-11-20 11:09:10,413 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:09:10,414 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] [2022-11-20 11:09:10,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ffc59b9-bd17-4b93-a6d4-2ae503fb0288/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:09:10,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ffc59b9-bd17-4b93-a6d4-2ae503fb0288/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:09:10,621 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-20 11:09:10,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:10,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1915746962, now seen corresponding path program 1 times [2022-11-20 11:09:10,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:09:10,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326200848] [2022-11-20 11:09:10,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:10,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:09:10,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:11,628 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:09:11,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:09:11,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326200848] [2022-11-20 11:09:11,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326200848] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:09:11,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562174803] [2022-11-20 11:09:11,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:11,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:09:11,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ffc59b9-bd17-4b93-a6d4-2ae503fb0288/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:09:11,632 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ffc59b9-bd17-4b93-a6d4-2ae503fb0288/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:09:11,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ffc59b9-bd17-4b93-a6d4-2ae503fb0288/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:09:11,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:11,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 11:09:11,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:09:12,019 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:09:12,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:09:12,454 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:09:12,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562174803] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:09:12,457 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:09:12,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-11-20 11:09:12,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165677354] [2022-11-20 11:09:12,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:09:12,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-20 11:09:12,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:09:12,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-20 11:09:12,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2022-11-20 11:09:12,476 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 367 [2022-11-20 11:09:12,487 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) [2022-11-20 11:09:12,487 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:09:12,487 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 367 [2022-11-20 11:09:12,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:09:24,802 INFO L130 PetriNetUnfolder]: 17116/25419 cut-off events. [2022-11-20 11:09:24,802 INFO L131 PetriNetUnfolder]: For 1956/1971 co-relation queries the response was YES. [2022-11-20 11:09:24,919 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 224. Compared 141911 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. [2022-11-20 11:09:25,128 INFO L137 encePairwiseOnDemand]: 341/367 looper letters, 686 selfloop transitions, 218 changer transitions 0/1135 dead transitions. [2022-11-20 11:09:25,128 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 1135 transitions, 5875 flow [2022-11-20 11:09:25,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-20 11:09:25,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-20 11:09:25,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 12236 transitions. [2022-11-20 11:09:25,161 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7577408967054744 [2022-11-20 11:09:25,162 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 12236 transitions. [2022-11-20 11:09:25,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 12236 transitions. [2022-11-20 11:09:25,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:09:25,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 12236 transitions. [2022-11-20 11:09:25,205 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) [2022-11-20 11:09:25,239 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) [2022-11-20 11:09:25,246 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) [2022-11-20 11:09:25,247 INFO L175 Difference]: Start difference. First operand has 362 places, 409 transitions, 1559 flow. Second operand 44 states and 12236 transitions. [2022-11-20 11:09:25,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 1135 transitions, 5875 flow [2022-11-20 11:09:25,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 1135 transitions, 5533 flow, removed 104 selfloop flow, removed 15 redundant places. [2022-11-20 11:09:25,288 INFO L231 Difference]: Finished difference. Result has 399 places, 535 transitions, 2771 flow [2022-11-20 11:09:25,289 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} [2022-11-20 11:09:25,290 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, 70 predicate places. [2022-11-20 11:09:25,290 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 535 transitions, 2771 flow [2022-11-20 11:09:25,293 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) [2022-11-20 11:09:25,294 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:09:25,294 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] [2022-11-20 11:09:25,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ffc59b9-bd17-4b93-a6d4-2ae503fb0288/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:09:25,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ffc59b9-bd17-4b93-a6d4-2ae503fb0288/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:09:25,502 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-20 11:09:25,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:25,503 INFO L85 PathProgramCache]: Analyzing trace with hash 2011792613, now seen corresponding path program 1 times [2022-11-20 11:09:25,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:09:25,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242760747] [2022-11-20 11:09:25,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:25,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:09:25,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:25,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:09:25,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:09:25,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242760747] [2022-11-20 11:09:25,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242760747] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:09:25,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:09:25,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:09:25,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004601117] [2022-11-20 11:09:25,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:09:25,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:09:25,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:09:25,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:09:25,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:09:25,892 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 367 [2022-11-20 11:09:25,894 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) [2022-11-20 11:09:25,894 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:09:25,895 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 367 [2022-11-20 11:09:25,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand