./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54ebfa2-b758-42d4-9a43-9ca3c9565c87/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54ebfa2-b758-42d4-9a43-9ca3c9565c87/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54ebfa2-b758-42d4-9a43-9ca3c9565c87/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54ebfa2-b758-42d4-9a43-9ca3c9565c87/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54ebfa2-b758-42d4-9a43-9ca3c9565c87/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54ebfa2-b758-42d4-9a43-9ca3c9565c87/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9a1ebdea5e08fe7fb177f9715317eb0e1f1a80d35c0ea62e77ce19d6486e2cb1 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 18:38:41,585 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:38:41,595 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:38:41,623 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:38:41,625 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:38:41,626 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:38:41,631 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:38:41,637 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:38:41,640 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:38:41,642 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:38:41,643 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:38:41,645 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:38:41,647 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:38:41,650 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:38:41,651 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:38:41,653 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:38:41,654 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:38:41,659 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:38:41,661 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:38:41,662 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:38:41,664 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:38:41,665 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:38:41,666 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:38:41,667 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:38:41,670 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:38:41,671 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:38:41,671 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:38:41,672 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:38:41,672 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:38:41,673 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:38:41,673 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:38:41,674 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:38:41,675 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:38:41,676 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:38:41,677 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:38:41,677 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:38:41,677 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:38:41,678 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:38:41,678 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:38:41,679 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:38:41,679 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:38:41,684 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54ebfa2-b758-42d4-9a43-9ca3c9565c87/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 18:38:41,717 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:38:41,718 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:38:41,719 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:38:41,719 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:38:41,720 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:38:41,720 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:38:41,720 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:38:41,721 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:38:41,721 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:38:41,721 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:38:41,722 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:38:41,722 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 18:38:41,723 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:38:41,723 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:38:41,723 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:38:41,723 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:38:41,723 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:38:41,723 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:38:41,724 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 18:38:41,724 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:38:41,724 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:38:41,724 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:38:41,724 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:38:41,725 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:38:41,725 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:38:41,725 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:38:41,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:38:41,728 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:38:41,728 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:38:41,728 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:38:41,728 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:38:41,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:38:41,729 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:38:41,729 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:38:41,729 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:38:41,729 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_c54ebfa2-b758-42d4-9a43-9ca3c9565c87/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54ebfa2-b758-42d4-9a43-9ca3c9565c87/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a1ebdea5e08fe7fb177f9715317eb0e1f1a80d35c0ea62e77ce19d6486e2cb1 [2022-11-18 18:38:41,992 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:38:42,022 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:38:42,025 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:38:42,026 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:38:42,027 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:38:42,029 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54ebfa2-b758-42d4-9a43-9ca3c9565c87/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c [2022-11-18 18:38:42,106 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54ebfa2-b758-42d4-9a43-9ca3c9565c87/bin/uautomizer-TMbwUNV5ro/data/258286a5d/c040d53dd90848f990257ffd22c9cba4/FLAG7985bc50d [2022-11-18 18:38:42,606 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:38:42,611 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54ebfa2-b758-42d4-9a43-9ca3c9565c87/sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c [2022-11-18 18:38:42,622 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54ebfa2-b758-42d4-9a43-9ca3c9565c87/bin/uautomizer-TMbwUNV5ro/data/258286a5d/c040d53dd90848f990257ffd22c9cba4/FLAG7985bc50d [2022-11-18 18:38:42,944 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54ebfa2-b758-42d4-9a43-9ca3c9565c87/bin/uautomizer-TMbwUNV5ro/data/258286a5d/c040d53dd90848f990257ffd22c9cba4 [2022-11-18 18:38:42,948 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:38:42,950 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:38:42,952 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:38:42,952 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:38:42,956 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:38:42,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:38:42" (1/1) ... [2022-11-18 18:38:42,959 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64ec99ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:42, skipping insertion in model container [2022-11-18 18:38:42,960 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:38:42" (1/1) ... [2022-11-18 18:38:42,968 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:38:43,000 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:38:43,242 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54ebfa2-b758-42d4-9a43-9ca3c9565c87/sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c[3424,3437] [2022-11-18 18:38:43,251 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:38:43,259 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:38:43,285 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54ebfa2-b758-42d4-9a43-9ca3c9565c87/sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c[3424,3437] [2022-11-18 18:38:43,288 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:38:43,303 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:38:43,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:43 WrapperNode [2022-11-18 18:38:43,304 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:38:43,305 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:38:43,305 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:38:43,305 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:38:43,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:43" (1/1) ... [2022-11-18 18:38:43,334 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:43" (1/1) ... [2022-11-18 18:38:43,375 INFO L138 Inliner]: procedures = 25, calls = 55, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 271 [2022-11-18 18:38:43,376 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:38:43,376 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:38:43,376 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:38:43,377 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:38:43,389 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:43" (1/1) ... [2022-11-18 18:38:43,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:43" (1/1) ... [2022-11-18 18:38:43,411 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:43" (1/1) ... [2022-11-18 18:38:43,412 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:43" (1/1) ... [2022-11-18 18:38:43,419 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:43" (1/1) ... [2022-11-18 18:38:43,440 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:43" (1/1) ... [2022-11-18 18:38:43,441 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:43" (1/1) ... [2022-11-18 18:38:43,443 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:43" (1/1) ... [2022-11-18 18:38:43,446 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:38:43,447 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:38:43,447 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:38:43,447 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:38:43,463 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:43" (1/1) ... [2022-11-18 18:38:43,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:38:43,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54ebfa2-b758-42d4-9a43-9ca3c9565c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:38:43,500 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54ebfa2-b758-42d4-9a43-9ca3c9565c87/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:38:43,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54ebfa2-b758-42d4-9a43-9ca3c9565c87/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:38:43,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:38:43,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 18:38:43,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 18:38:43,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 18:38:43,538 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 18:38:43,538 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 18:38:43,538 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 18:38:43,538 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 18:38:43,538 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 18:38:43,538 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 18:38:43,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:38:43,539 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 18:38:43,539 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 18:38:43,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 18:38:43,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:38:43,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:38:43,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 18:38:43,541 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 18:38:43,652 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:38:43,654 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:38:44,317 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:38:44,565 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:38:44,565 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-18 18:38:44,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:38:44 BoogieIcfgContainer [2022-11-18 18:38:44,569 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:38:44,571 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:38:44,571 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:38:44,575 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:38:44,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:38:42" (1/3) ... [2022-11-18 18:38:44,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@582e3bd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:38:44, skipping insertion in model container [2022-11-18 18:38:44,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:43" (2/3) ... [2022-11-18 18:38:44,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@582e3bd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:38:44, skipping insertion in model container [2022-11-18 18:38:44,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:38:44" (3/3) ... [2022-11-18 18:38:44,578 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-horseshoe.wvr.c [2022-11-18 18:38:44,587 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 18:38:44,598 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:38:44,598 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2022-11-18 18:38:44,598 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 18:38:44,781 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 18:38:44,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 242 places, 250 transitions, 524 flow [2022-11-18 18:38:44,990 INFO L130 PetriNetUnfolder]: 18/247 cut-off events. [2022-11-18 18:38:44,990 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 18:38:44,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 247 events. 18/247 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 227 event pairs, 0 based on Foata normal form. 0/203 useless extension candidates. Maximal degree in co-relation 196. Up to 3 conditions per place. [2022-11-18 18:38:44,997 INFO L82 GeneralOperation]: Start removeDead. Operand has 242 places, 250 transitions, 524 flow [2022-11-18 18:38:45,009 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 220 places, 227 transitions, 472 flow [2022-11-18 18:38:45,026 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:38:45,035 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;@a68a1f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:38:45,036 INFO L358 AbstractCegarLoop]: Starting to check reachability of 47 error locations. [2022-11-18 18:38:45,072 INFO L130 PetriNetUnfolder]: 3/73 cut-off events. [2022-11-18 18:38:45,073 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:38:45,073 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:38:45,074 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] [2022-11-18 18:38:45,075 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2022-11-18 18:38:45,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:45,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1046920266, now seen corresponding path program 1 times [2022-11-18 18:38:45,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:45,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726107846] [2022-11-18 18:38:45,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:45,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:45,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:45,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:45,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:45,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726107846] [2022-11-18 18:38:45,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726107846] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:45,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:45,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:38:45,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838325769] [2022-11-18 18:38:45,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:45,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:38:45,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:45,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:38:45,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:38:45,553 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 250 [2022-11-18 18:38:45,560 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 227 transitions, 472 flow. Second operand has 4 states, 4 states have (on average 190.5) internal successors, (762), 4 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:45,561 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:38:45,561 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 250 [2022-11-18 18:38:45,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:38:46,371 INFO L130 PetriNetUnfolder]: 793/2013 cut-off events. [2022-11-18 18:38:46,371 INFO L131 PetriNetUnfolder]: For 232/232 co-relation queries the response was YES. [2022-11-18 18:38:46,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3397 conditions, 2013 events. 793/2013 cut-off events. For 232/232 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 13057 event pairs, 472 based on Foata normal form. 252/1401 useless extension candidates. Maximal degree in co-relation 1508. Up to 588 conditions per place. [2022-11-18 18:38:46,401 INFO L137 encePairwiseOnDemand]: 220/250 looper letters, 68 selfloop transitions, 9 changer transitions 5/245 dead transitions. [2022-11-18 18:38:46,402 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 245 transitions, 680 flow [2022-11-18 18:38:46,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:38:46,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:38:46,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1056 transitions. [2022-11-18 18:38:46,424 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8448 [2022-11-18 18:38:46,425 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1056 transitions. [2022-11-18 18:38:46,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1056 transitions. [2022-11-18 18:38:46,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:38:46,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1056 transitions. [2022-11-18 18:38:46,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 211.2) internal successors, (1056), 5 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:46,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 250.0) internal successors, (1500), 6 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:46,451 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 250.0) internal successors, (1500), 6 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:46,453 INFO L175 Difference]: Start difference. First operand has 220 places, 227 transitions, 472 flow. Second operand 5 states and 1056 transitions. [2022-11-18 18:38:46,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 245 transitions, 680 flow [2022-11-18 18:38:46,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 245 transitions, 656 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-18 18:38:46,468 INFO L231 Difference]: Finished difference. Result has 216 places, 212 transitions, 483 flow [2022-11-18 18:38:46,471 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=483, PETRI_PLACES=216, PETRI_TRANSITIONS=212} [2022-11-18 18:38:46,476 INFO L288 CegarLoopForPetriNet]: 220 programPoint places, -4 predicate places. [2022-11-18 18:38:46,476 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 212 transitions, 483 flow [2022-11-18 18:38:46,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 190.5) internal successors, (762), 4 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:46,478 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:38:46,478 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] [2022-11-18 18:38:46,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:38:46,479 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2022-11-18 18:38:46,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:46,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1438837809, now seen corresponding path program 1 times [2022-11-18 18:38:46,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:46,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813082987] [2022-11-18 18:38:46,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:46,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:46,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:46,822 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:46,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:46,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813082987] [2022-11-18 18:38:46,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813082987] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:38:46,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100634102] [2022-11-18 18:38:46,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:46,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:38:46,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54ebfa2-b758-42d4-9a43-9ca3c9565c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:38:46,828 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54ebfa2-b758-42d4-9a43-9ca3c9565c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:38:46,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54ebfa2-b758-42d4-9a43-9ca3c9565c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 18:38:46,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:46,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 18:38:46,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:38:47,031 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:47,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:38:47,097 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:47,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100634102] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:38:47,098 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:38:47,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 18:38:47,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798110701] [2022-11-18 18:38:47,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:38:47,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:38:47,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:47,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:38:47,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:38:47,112 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 250 [2022-11-18 18:38:47,115 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 212 transitions, 483 flow. Second operand has 12 states, 12 states have (on average 191.66666666666666) internal successors, (2300), 12 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:47,115 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:38:47,115 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 250 [2022-11-18 18:38:47,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:38:48,775 INFO L130 PetriNetUnfolder]: 1981/4903 cut-off events. [2022-11-18 18:38:48,775 INFO L131 PetriNetUnfolder]: For 152/152 co-relation queries the response was YES. [2022-11-18 18:38:48,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8072 conditions, 4903 events. 1981/4903 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 36477 event pairs, 1180 based on Foata normal form. 6/2774 useless extension candidates. Maximal degree in co-relation 6236. Up to 581 conditions per place. [2022-11-18 18:38:48,822 INFO L137 encePairwiseOnDemand]: 235/250 looper letters, 146 selfloop transitions, 40 changer transitions 0/349 dead transitions. [2022-11-18 18:38:48,822 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 349 transitions, 1203 flow [2022-11-18 18:38:48,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 18:38:48,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 18:38:48,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3594 transitions. [2022-11-18 18:38:48,830 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7986666666666666 [2022-11-18 18:38:48,830 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3594 transitions. [2022-11-18 18:38:48,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3594 transitions. [2022-11-18 18:38:48,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:38:48,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3594 transitions. [2022-11-18 18:38:48,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 199.66666666666666) internal successors, (3594), 18 states have internal predecessors, (3594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:48,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 250.0) internal successors, (4750), 19 states have internal predecessors, (4750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:48,852 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 250.0) internal successors, (4750), 19 states have internal predecessors, (4750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:48,852 INFO L175 Difference]: Start difference. First operand has 216 places, 212 transitions, 483 flow. Second operand 18 states and 3594 transitions. [2022-11-18 18:38:48,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 349 transitions, 1203 flow [2022-11-18 18:38:48,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 349 transitions, 1198 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:38:48,860 INFO L231 Difference]: Finished difference. Result has 231 places, 239 transitions, 716 flow [2022-11-18 18:38:48,861 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=716, PETRI_PLACES=231, PETRI_TRANSITIONS=239} [2022-11-18 18:38:48,862 INFO L288 CegarLoopForPetriNet]: 220 programPoint places, 11 predicate places. [2022-11-18 18:38:48,862 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 239 transitions, 716 flow [2022-11-18 18:38:48,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 191.66666666666666) internal successors, (2300), 12 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:48,864 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:38:48,864 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] [2022-11-18 18:38:48,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54ebfa2-b758-42d4-9a43-9ca3c9565c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 18:38:49,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54ebfa2-b758-42d4-9a43-9ca3c9565c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:38:49,070 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2022-11-18 18:38:49,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:49,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1654298436, now seen corresponding path program 1 times [2022-11-18 18:38:49,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:49,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709459167] [2022-11-18 18:38:49,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:49,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:49,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:49,214 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:49,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:49,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709459167] [2022-11-18 18:38:49,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709459167] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:38:49,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144554873] [2022-11-18 18:38:49,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:49,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:38:49,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54ebfa2-b758-42d4-9a43-9ca3c9565c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:38:49,218 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54ebfa2-b758-42d4-9a43-9ca3c9565c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:38:49,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54ebfa2-b758-42d4-9a43-9ca3c9565c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 18:38:49,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:49,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 18:38:49,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:38:49,380 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:49,380 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:38:49,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144554873] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:49,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:38:49,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 18:38:49,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136111073] [2022-11-18 18:38:49,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:49,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:38:49,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:49,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:38:49,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:38:49,390 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 250 [2022-11-18 18:38:49,391 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 239 transitions, 716 flow. Second operand has 6 states, 6 states have (on average 191.33333333333334) internal successors, (1148), 6 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:49,391 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:38:49,392 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 250 [2022-11-18 18:38:49,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:38:50,741 INFO L130 PetriNetUnfolder]: 1981/4895 cut-off events. [2022-11-18 18:38:50,741 INFO L131 PetriNetUnfolder]: For 246/246 co-relation queries the response was YES. [2022-11-18 18:38:50,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8109 conditions, 4895 events. 1981/4895 cut-off events. For 246/246 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 36517 event pairs, 1180 based on Foata normal form. 8/2768 useless extension candidates. Maximal degree in co-relation 6458. Up to 2280 conditions per place. [2022-11-18 18:38:50,791 INFO L137 encePairwiseOnDemand]: 239/250 looper letters, 69 selfloop transitions, 27 changer transitions 0/259 dead transitions. [2022-11-18 18:38:50,791 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 259 transitions, 920 flow [2022-11-18 18:38:50,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:38:50,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 18:38:50,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1400 transitions. [2022-11-18 18:38:50,798 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8 [2022-11-18 18:38:50,798 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1400 transitions. [2022-11-18 18:38:50,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1400 transitions. [2022-11-18 18:38:50,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:38:50,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1400 transitions. [2022-11-18 18:38:50,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 200.0) internal successors, (1400), 7 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:50,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 250.0) internal successors, (2000), 8 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:50,807 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 250.0) internal successors, (2000), 8 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:50,807 INFO L175 Difference]: Start difference. First operand has 231 places, 239 transitions, 716 flow. Second operand 7 states and 1400 transitions. [2022-11-18 18:38:50,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 259 transitions, 920 flow [2022-11-18 18:38:50,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 259 transitions, 846 flow, removed 26 selfloop flow, removed 5 redundant places. [2022-11-18 18:38:50,819 INFO L231 Difference]: Finished difference. Result has 226 places, 231 transitions, 642 flow [2022-11-18 18:38:50,820 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=642, PETRI_PLACES=226, PETRI_TRANSITIONS=231} [2022-11-18 18:38:50,822 INFO L288 CegarLoopForPetriNet]: 220 programPoint places, 6 predicate places. [2022-11-18 18:38:50,822 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 231 transitions, 642 flow [2022-11-18 18:38:50,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 191.33333333333334) internal successors, (1148), 6 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:50,823 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:38:50,824 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] [2022-11-18 18:38:50,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54ebfa2-b758-42d4-9a43-9ca3c9565c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 18:38:51,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54ebfa2-b758-42d4-9a43-9ca3c9565c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:38:51,029 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2022-11-18 18:38:51,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:51,029 INFO L85 PathProgramCache]: Analyzing trace with hash 518427638, now seen corresponding path program 2 times [2022-11-18 18:38:51,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:51,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810340557] [2022-11-18 18:38:51,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:51,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:51,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:51,305 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:51,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:51,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810340557] [2022-11-18 18:38:51,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810340557] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:38:51,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437577041] [2022-11-18 18:38:51,307 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:38:51,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:38:51,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54ebfa2-b758-42d4-9a43-9ca3c9565c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:38:51,308 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54ebfa2-b758-42d4-9a43-9ca3c9565c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:38:51,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54ebfa2-b758-42d4-9a43-9ca3c9565c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 18:38:51,411 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:38:51,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:38:51,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 18:38:51,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:38:51,638 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 18:38:51,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:38:51,817 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 18:38:51,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437577041] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:38:51,818 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:38:51,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-18 18:38:51,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743957461] [2022-11-18 18:38:51,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:38:51,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 18:38:51,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:51,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 18:38:51,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-18 18:38:51,824 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 250 [2022-11-18 18:38:51,827 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 231 transitions, 642 flow. Second operand has 18 states, 18 states have (on average 177.61111111111111) internal successors, (3197), 18 states have internal predecessors, (3197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:51,827 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:38:51,828 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 250 [2022-11-18 18:38:51,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:38:54,018 INFO L130 PetriNetUnfolder]: 1317/4211 cut-off events. [2022-11-18 18:38:54,018 INFO L131 PetriNetUnfolder]: For 294/294 co-relation queries the response was YES. [2022-11-18 18:38:54,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6592 conditions, 4211 events. 1317/4211 cut-off events. For 294/294 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 32155 event pairs, 854 based on Foata normal form. 4/2899 useless extension candidates. Maximal degree in co-relation 5328. Up to 343 conditions per place. [2022-11-18 18:38:54,061 INFO L137 encePairwiseOnDemand]: 227/250 looper letters, 177 selfloop transitions, 65 changer transitions 0/390 dead transitions. [2022-11-18 18:38:54,062 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 390 transitions, 1539 flow [2022-11-18 18:38:54,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-18 18:38:54,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-11-18 18:38:54,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 8793 transitions. [2022-11-18 18:38:54,086 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7177959183673469 [2022-11-18 18:38:54,087 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 8793 transitions. [2022-11-18 18:38:54,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 8793 transitions. [2022-11-18 18:38:54,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:38:54,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 8793 transitions. [2022-11-18 18:38:54,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 179.44897959183675) internal successors, (8793), 49 states have internal predecessors, (8793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:54,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 250.0) internal successors, (12500), 50 states have internal predecessors, (12500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:54,215 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 250.0) internal successors, (12500), 50 states have internal predecessors, (12500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:54,215 INFO L175 Difference]: Start difference. First operand has 226 places, 231 transitions, 642 flow. Second operand 49 states and 8793 transitions. [2022-11-18 18:38:54,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 390 transitions, 1539 flow [2022-11-18 18:38:54,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 390 transitions, 1496 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 18:38:54,223 INFO L231 Difference]: Finished difference. Result has 269 places, 253 transitions, 851 flow [2022-11-18 18:38:54,224 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=592, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=851, PETRI_PLACES=269, PETRI_TRANSITIONS=253} [2022-11-18 18:38:54,225 INFO L288 CegarLoopForPetriNet]: 220 programPoint places, 49 predicate places. [2022-11-18 18:38:54,225 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 253 transitions, 851 flow [2022-11-18 18:38:54,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 177.61111111111111) internal successors, (3197), 18 states have internal predecessors, (3197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:54,227 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:38:54,227 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] [2022-11-18 18:38:54,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54ebfa2-b758-42d4-9a43-9ca3c9565c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 18:38:54,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54ebfa2-b758-42d4-9a43-9ca3c9565c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:38:54,445 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2022-11-18 18:38:54,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:54,446 INFO L85 PathProgramCache]: Analyzing trace with hash 728424532, now seen corresponding path program 1 times [2022-11-18 18:38:54,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:54,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691421856] [2022-11-18 18:38:54,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:54,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:54,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:54,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:54,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:54,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691421856] [2022-11-18 18:38:54,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691421856] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:54,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:54,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:38:54,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116738478] [2022-11-18 18:38:54,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:54,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:38:54,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:54,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:38:54,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:38:54,622 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 250 [2022-11-18 18:38:54,623 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 253 transitions, 851 flow. Second operand has 4 states, 4 states have (on average 204.5) internal successors, (818), 4 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:54,624 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:38:54,624 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 250 [2022-11-18 18:38:54,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:38:57,856 INFO L130 PetriNetUnfolder]: 6728/14172 cut-off events. [2022-11-18 18:38:57,856 INFO L131 PetriNetUnfolder]: For 460/460 co-relation queries the response was YES. [2022-11-18 18:38:57,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26087 conditions, 14172 events. 6728/14172 cut-off events. For 460/460 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 122727 event pairs, 3311 based on Foata normal form. 0/9433 useless extension candidates. Maximal degree in co-relation 25792. Up to 6091 conditions per place. [2022-11-18 18:38:57,985 INFO L137 encePairwiseOnDemand]: 244/250 looper letters, 60 selfloop transitions, 4 changer transitions 0/292 dead transitions. [2022-11-18 18:38:57,985 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 292 transitions, 1066 flow [2022-11-18 18:38:57,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:38:57,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:38:57,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1081 transitions. [2022-11-18 18:38:57,989 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8648 [2022-11-18 18:38:57,989 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1081 transitions. [2022-11-18 18:38:57,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1081 transitions. [2022-11-18 18:38:57,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:38:57,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1081 transitions. [2022-11-18 18:38:58,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 216.2) internal successors, (1081), 5 states have internal predecessors, (1081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:58,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 250.0) internal successors, (1500), 6 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:58,003 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 250.0) internal successors, (1500), 6 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:58,004 INFO L175 Difference]: Start difference. First operand has 269 places, 253 transitions, 851 flow. Second operand 5 states and 1081 transitions. [2022-11-18 18:38:58,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 292 transitions, 1066 flow [2022-11-18 18:38:58,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 292 transitions, 983 flow, removed 9 selfloop flow, removed 15 redundant places. [2022-11-18 18:38:58,016 INFO L231 Difference]: Finished difference. Result has 261 places, 256 transitions, 798 flow [2022-11-18 18:38:58,016 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=768, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=798, PETRI_PLACES=261, PETRI_TRANSITIONS=256} [2022-11-18 18:38:58,019 INFO L288 CegarLoopForPetriNet]: 220 programPoint places, 41 predicate places. [2022-11-18 18:38:58,019 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 256 transitions, 798 flow [2022-11-18 18:38:58,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 204.5) internal successors, (818), 4 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:58,020 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:38:58,020 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] [2022-11-18 18:38:58,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 18:38:58,021 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2022-11-18 18:38:58,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:58,021 INFO L85 PathProgramCache]: Analyzing trace with hash 360490906, now seen corresponding path program 1 times [2022-11-18 18:38:58,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:58,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752085916] [2022-11-18 18:38:58,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:58,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:58,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:58,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:58,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:58,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752085916] [2022-11-18 18:38:58,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752085916] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:58,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:58,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:38:58,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222625279] [2022-11-18 18:38:58,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:58,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:38:58,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:58,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:38:58,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:38:58,305 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 250 [2022-11-18 18:38:58,305 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 256 transitions, 798 flow. Second operand has 3 states, 3 states have (on average 211.66666666666666) internal successors, (635), 3 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:58,306 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:38:58,306 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 250 [2022-11-18 18:38:58,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:38:59,523 INFO L130 PetriNetUnfolder]: 1422/5478 cut-off events. [2022-11-18 18:38:59,524 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2022-11-18 18:38:59,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8660 conditions, 5478 events. 1422/5478 cut-off events. For 469/469 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 49863 event pairs, 490 based on Foata normal form. 28/3910 useless extension candidates. Maximal degree in co-relation 8382. Up to 2384 conditions per place. [2022-11-18 18:38:59,575 INFO L137 encePairwiseOnDemand]: 246/250 looper letters, 22 selfloop transitions, 3 changer transitions 0/262 dead transitions. [2022-11-18 18:38:59,575 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 262 transitions, 862 flow [2022-11-18 18:38:59,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:38:59,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:38:59,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 653 transitions. [2022-11-18 18:38:59,578 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8706666666666667 [2022-11-18 18:38:59,578 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 653 transitions. [2022-11-18 18:38:59,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 653 transitions. [2022-11-18 18:38:59,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:38:59,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 653 transitions. [2022-11-18 18:38:59,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 217.66666666666666) internal successors, (653), 3 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:59,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:59,583 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:59,583 INFO L175 Difference]: Start difference. First operand has 261 places, 256 transitions, 798 flow. Second operand 3 states and 653 transitions. [2022-11-18 18:38:59,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 262 transitions, 862 flow [2022-11-18 18:38:59,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 262 transitions, 860 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:38:59,593 INFO L231 Difference]: Finished difference. Result has 263 places, 258 transitions, 815 flow [2022-11-18 18:38:59,594 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=796, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=815, PETRI_PLACES=263, PETRI_TRANSITIONS=258} [2022-11-18 18:38:59,597 INFO L288 CegarLoopForPetriNet]: 220 programPoint places, 43 predicate places. [2022-11-18 18:38:59,597 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 258 transitions, 815 flow [2022-11-18 18:38:59,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.66666666666666) internal successors, (635), 3 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:59,597 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:38:59,598 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:59,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 18:38:59,598 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2022-11-18 18:38:59,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:59,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1221330777, now seen corresponding path program 1 times [2022-11-18 18:38:59,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:59,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158098713] [2022-11-18 18:38:59,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:59,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:59,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:59,761 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:59,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:59,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158098713] [2022-11-18 18:38:59,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158098713] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:38:59,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637446460] [2022-11-18 18:38:59,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:59,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:38:59,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54ebfa2-b758-42d4-9a43-9ca3c9565c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:38:59,767 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54ebfa2-b758-42d4-9a43-9ca3c9565c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:38:59,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54ebfa2-b758-42d4-9a43-9ca3c9565c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 18:38:59,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:59,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 18:38:59,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:39:00,078 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:39:00,079 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:39:00,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637446460] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:39:00,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:39:00,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 10 [2022-11-18 18:39:00,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059168335] [2022-11-18 18:39:00,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:39:00,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:39:00,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:00,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:39:00,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:39:00,083 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 250 [2022-11-18 18:39:00,085 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 258 transitions, 815 flow. Second operand has 6 states, 6 states have (on average 190.5) internal successors, (1143), 6 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:00,085 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:39:00,086 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 250 [2022-11-18 18:39:00,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:39:01,535 INFO L130 PetriNetUnfolder]: 1429/5922 cut-off events. [2022-11-18 18:39:01,536 INFO L131 PetriNetUnfolder]: For 1310/1646 co-relation queries the response was YES. [2022-11-18 18:39:01,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10131 conditions, 5922 events. 1429/5922 cut-off events. For 1310/1646 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 54482 event pairs, 1218 based on Foata normal form. 70/4347 useless extension candidates. Maximal degree in co-relation 9204. Up to 2463 conditions per place. [2022-11-18 18:39:01,596 INFO L137 encePairwiseOnDemand]: 239/250 looper letters, 99 selfloop transitions, 21 changer transitions 0/294 dead transitions. [2022-11-18 18:39:01,596 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 294 transitions, 1202 flow [2022-11-18 18:39:01,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:39:01,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 18:39:01,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1748 transitions. [2022-11-18 18:39:01,602 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7768888888888889 [2022-11-18 18:39:01,602 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1748 transitions. [2022-11-18 18:39:01,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1748 transitions. [2022-11-18 18:39:01,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:39:01,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1748 transitions. [2022-11-18 18:39:01,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 194.22222222222223) internal successors, (1748), 9 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:01,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 250.0) internal successors, (2500), 10 states have internal predecessors, (2500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:01,614 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 250.0) internal successors, (2500), 10 states have internal predecessors, (2500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:01,614 INFO L175 Difference]: Start difference. First operand has 263 places, 258 transitions, 815 flow. Second operand 9 states and 1748 transitions. [2022-11-18 18:39:01,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 294 transitions, 1202 flow [2022-11-18 18:39:01,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 294 transitions, 1199 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:39:01,626 INFO L231 Difference]: Finished difference. Result has 272 places, 259 transitions, 868 flow [2022-11-18 18:39:01,627 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=812, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=868, PETRI_PLACES=272, PETRI_TRANSITIONS=259} [2022-11-18 18:39:01,627 INFO L288 CegarLoopForPetriNet]: 220 programPoint places, 52 predicate places. [2022-11-18 18:39:01,628 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 259 transitions, 868 flow [2022-11-18 18:39:01,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 190.5) internal successors, (1143), 6 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:01,628 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:39:01,629 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] [2022-11-18 18:39:01,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54ebfa2-b758-42d4-9a43-9ca3c9565c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 18:39:01,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54ebfa2-b758-42d4-9a43-9ca3c9565c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:39:01,834 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2022-11-18 18:39:01,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:01,835 INFO L85 PathProgramCache]: Analyzing trace with hash 164841123, now seen corresponding path program 1 times [2022-11-18 18:39:01,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:01,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411671173] [2022-11-18 18:39:01,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:01,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:01,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:02,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:39:02,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:02,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411671173] [2022-11-18 18:39:02,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411671173] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:39:02,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:39:02,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:39:02,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101128402] [2022-11-18 18:39:02,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:39:02,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:39:02,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:02,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:39:02,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:39:02,135 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 250 [2022-11-18 18:39:02,136 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 259 transitions, 868 flow. Second operand has 4 states, 4 states have (on average 208.75) internal successors, (835), 4 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:02,136 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:39:02,136 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 250 [2022-11-18 18:39:02,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:39:03,238 INFO L130 PetriNetUnfolder]: 1961/6300 cut-off events. [2022-11-18 18:39:03,238 INFO L131 PetriNetUnfolder]: For 1260/1428 co-relation queries the response was YES. [2022-11-18 18:39:03,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11069 conditions, 6300 events. 1961/6300 cut-off events. For 1260/1428 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 55601 event pairs, 700 based on Foata normal form. 224/4445 useless extension candidates. Maximal degree in co-relation 10278. Up to 2425 conditions per place. [2022-11-18 18:39:03,296 INFO L137 encePairwiseOnDemand]: 244/250 looper letters, 35 selfloop transitions, 4 changer transitions 0/268 dead transitions. [2022-11-18 18:39:03,296 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 268 transitions, 972 flow [2022-11-18 18:39:03,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:39:03,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 18:39:03,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 857 transitions. [2022-11-18 18:39:03,299 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.857 [2022-11-18 18:39:03,299 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 857 transitions. [2022-11-18 18:39:03,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 857 transitions. [2022-11-18 18:39:03,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:39:03,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 857 transitions. [2022-11-18 18:39:03,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 214.25) internal successors, (857), 4 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:03,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:03,309 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:03,309 INFO L175 Difference]: Start difference. First operand has 272 places, 259 transitions, 868 flow. Second operand 4 states and 857 transitions. [2022-11-18 18:39:03,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 268 transitions, 972 flow [2022-11-18 18:39:03,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 268 transitions, 946 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 18:39:03,318 INFO L231 Difference]: Finished difference. Result has 271 places, 260 transitions, 860 flow [2022-11-18 18:39:03,319 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=860, PETRI_PLACES=271, PETRI_TRANSITIONS=260} [2022-11-18 18:39:03,319 INFO L288 CegarLoopForPetriNet]: 220 programPoint places, 51 predicate places. [2022-11-18 18:39:03,319 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 260 transitions, 860 flow [2022-11-18 18:39:03,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 208.75) internal successors, (835), 4 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:03,320 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:39:03,320 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:39:03,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 18:39:03,321 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2022-11-18 18:39:03,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:03,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1718374176, now seen corresponding path program 1 times [2022-11-18 18:39:03,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:03,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450275402] [2022-11-18 18:39:03,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:03,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:03,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:03,432 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:39:03,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:03,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450275402] [2022-11-18 18:39:03,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450275402] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:39:03,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300597399] [2022-11-18 18:39:03,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:03,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:39:03,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54ebfa2-b758-42d4-9a43-9ca3c9565c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:39:03,435 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54ebfa2-b758-42d4-9a43-9ca3c9565c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:39:03,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54ebfa2-b758-42d4-9a43-9ca3c9565c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 18:39:03,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:03,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 18:39:03,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:39:03,875 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:39:03,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:39:04,198 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:39:04,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300597399] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:39:04,198 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:39:04,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2022-11-18 18:39:04,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325957735] [2022-11-18 18:39:04,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:39:04,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 18:39:04,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:04,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 18:39:04,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2022-11-18 18:39:04,204 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 250 [2022-11-18 18:39:04,207 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 260 transitions, 860 flow. Second operand has 19 states, 19 states have (on average 170.21052631578948) internal successors, (3234), 19 states have internal predecessors, (3234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:04,207 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:39:04,208 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 250 [2022-11-18 18:39:04,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:39:11,675 INFO L130 PetriNetUnfolder]: 14897/35234 cut-off events. [2022-11-18 18:39:11,676 INFO L131 PetriNetUnfolder]: For 8224/8322 co-relation queries the response was YES. [2022-11-18 18:39:11,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75410 conditions, 35234 events. 14897/35234 cut-off events. For 8224/8322 co-relation queries the response was YES. Maximal size of possible extension queue 716. Compared 373118 event pairs, 3423 based on Foata normal form. 651/26967 useless extension candidates. Maximal degree in co-relation 64613. Up to 6403 conditions per place. [2022-11-18 18:39:12,125 INFO L137 encePairwiseOnDemand]: 227/250 looper letters, 287 selfloop transitions, 54 changer transitions 15/495 dead transitions. [2022-11-18 18:39:12,126 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 495 transitions, 2479 flow [2022-11-18 18:39:12,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-18 18:39:12,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-11-18 18:39:12,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 5038 transitions. [2022-11-18 18:39:12,135 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6948965517241379 [2022-11-18 18:39:12,135 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 5038 transitions. [2022-11-18 18:39:12,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 5038 transitions. [2022-11-18 18:39:12,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:39:12,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 5038 transitions. [2022-11-18 18:39:12,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 173.72413793103448) internal successors, (5038), 29 states have internal predecessors, (5038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:12,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 250.0) internal successors, (7500), 30 states have internal predecessors, (7500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:12,160 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 250.0) internal successors, (7500), 30 states have internal predecessors, (7500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:12,160 INFO L175 Difference]: Start difference. First operand has 271 places, 260 transitions, 860 flow. Second operand 29 states and 5038 transitions. [2022-11-18 18:39:12,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 495 transitions, 2479 flow [2022-11-18 18:39:12,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 495 transitions, 2463 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 18:39:12,217 INFO L231 Difference]: Finished difference. Result has 306 places, 280 transitions, 1152 flow [2022-11-18 18:39:12,218 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=854, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=1152, PETRI_PLACES=306, PETRI_TRANSITIONS=280} [2022-11-18 18:39:12,218 INFO L288 CegarLoopForPetriNet]: 220 programPoint places, 86 predicate places. [2022-11-18 18:39:12,219 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 280 transitions, 1152 flow [2022-11-18 18:39:12,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 170.21052631578948) internal successors, (3234), 19 states have internal predecessors, (3234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:12,220 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:39:12,220 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] [2022-11-18 18:39:12,226 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54ebfa2-b758-42d4-9a43-9ca3c9565c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-18 18:39:12,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54ebfa2-b758-42d4-9a43-9ca3c9565c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-18 18:39:12,426 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2022-11-18 18:39:12,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:12,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1499096793, now seen corresponding path program 1 times [2022-11-18 18:39:12,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:12,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122194185] [2022-11-18 18:39:12,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:12,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:12,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:12,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:39:12,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:12,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122194185] [2022-11-18 18:39:12,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122194185] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:39:12,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:39:12,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:39:12,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454017548] [2022-11-18 18:39:12,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:39:12,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:39:12,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:12,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:39:12,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:39:12,691 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 250 [2022-11-18 18:39:12,693 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 280 transitions, 1152 flow. Second operand has 6 states, 6 states have (on average 191.5) internal successors, (1149), 6 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:12,693 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:39:12,693 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 250 [2022-11-18 18:39:12,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:39:15,261 INFO L130 PetriNetUnfolder]: 3377/12857 cut-off events. [2022-11-18 18:39:15,261 INFO L131 PetriNetUnfolder]: For 5452/6000 co-relation queries the response was YES. [2022-11-18 18:39:15,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24586 conditions, 12857 events. 3377/12857 cut-off events. For 5452/6000 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 138117 event pairs, 2316 based on Foata normal form. 284/9448 useless extension candidates. Maximal degree in co-relation 20605. Up to 5535 conditions per place. [2022-11-18 18:39:15,366 INFO L137 encePairwiseOnDemand]: 239/250 looper letters, 93 selfloop transitions, 14 changer transitions 5/294 dead transitions. [2022-11-18 18:39:15,366 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 294 transitions, 1450 flow [2022-11-18 18:39:15,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:39:15,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 18:39:15,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1366 transitions. [2022-11-18 18:39:15,369 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7805714285714286 [2022-11-18 18:39:15,370 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1366 transitions. [2022-11-18 18:39:15,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1366 transitions. [2022-11-18 18:39:15,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:39:15,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1366 transitions. [2022-11-18 18:39:15,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 195.14285714285714) internal successors, (1366), 7 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:15,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 250.0) internal successors, (2000), 8 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:15,378 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 250.0) internal successors, (2000), 8 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:15,378 INFO L175 Difference]: Start difference. First operand has 306 places, 280 transitions, 1152 flow. Second operand 7 states and 1366 transitions. [2022-11-18 18:39:15,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 294 transitions, 1450 flow [2022-11-18 18:39:15,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 294 transitions, 1371 flow, removed 12 selfloop flow, removed 15 redundant places. [2022-11-18 18:39:15,404 INFO L231 Difference]: Finished difference. Result has 297 places, 280 transitions, 1118 flow [2022-11-18 18:39:15,404 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=1081, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1118, PETRI_PLACES=297, PETRI_TRANSITIONS=280} [2022-11-18 18:39:15,405 INFO L288 CegarLoopForPetriNet]: 220 programPoint places, 77 predicate places. [2022-11-18 18:39:15,405 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 280 transitions, 1118 flow [2022-11-18 18:39:15,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 191.5) internal successors, (1149), 6 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:15,406 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:39:15,407 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:39:15,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 18:39:15,407 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2022-11-18 18:39:15,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:15,408 INFO L85 PathProgramCache]: Analyzing trace with hash 672666442, now seen corresponding path program 1 times [2022-11-18 18:39:15,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:15,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94750668] [2022-11-18 18:39:15,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:15,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:15,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:15,551 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-18 18:39:15,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:15,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94750668] [2022-11-18 18:39:15,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94750668] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:39:15,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482117448] [2022-11-18 18:39:15,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:15,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:39:15,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54ebfa2-b758-42d4-9a43-9ca3c9565c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:39:15,554 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54ebfa2-b758-42d4-9a43-9ca3c9565c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:39:15,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54ebfa2-b758-42d4-9a43-9ca3c9565c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 18:39:15,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:15,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 18:39:15,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:39:15,733 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-18 18:39:15,734 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:39:15,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482117448] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:39:15,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:39:15,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 18:39:15,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643685027] [2022-11-18 18:39:15,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:39:15,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:39:15,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:15,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:39:15,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:39:15,740 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 250 [2022-11-18 18:39:15,742 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 280 transitions, 1118 flow. Second operand has 6 states, 6 states have (on average 205.33333333333334) internal successors, (1232), 6 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:15,742 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:39:15,742 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 250 [2022-11-18 18:39:15,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:39:20,984 INFO L130 PetriNetUnfolder]: 13277/25887 cut-off events. [2022-11-18 18:39:20,984 INFO L131 PetriNetUnfolder]: For 12217/12217 co-relation queries the response was YES. [2022-11-18 18:39:21,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68065 conditions, 25887 events. 13277/25887 cut-off events. For 12217/12217 co-relation queries the response was YES. Maximal size of possible extension queue 616. Compared 235100 event pairs, 542 based on Foata normal form. 382/19458 useless extension candidates. Maximal degree in co-relation 67794. Up to 8319 conditions per place. [2022-11-18 18:39:21,372 INFO L137 encePairwiseOnDemand]: 245/250 looper letters, 76 selfloop transitions, 12 changer transitions 0/327 dead transitions. [2022-11-18 18:39:21,372 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 327 transitions, 1463 flow [2022-11-18 18:39:21,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:39:21,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 18:39:21,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1496 transitions. [2022-11-18 18:39:21,374 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8548571428571429 [2022-11-18 18:39:21,375 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1496 transitions. [2022-11-18 18:39:21,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1496 transitions. [2022-11-18 18:39:21,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:39:21,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1496 transitions. [2022-11-18 18:39:21,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 213.71428571428572) internal successors, (1496), 7 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:21,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 250.0) internal successors, (2000), 8 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:21,386 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 250.0) internal successors, (2000), 8 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:21,387 INFO L175 Difference]: Start difference. First operand has 297 places, 280 transitions, 1118 flow. Second operand 7 states and 1496 transitions. [2022-11-18 18:39:21,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 327 transitions, 1463 flow [2022-11-18 18:39:21,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 327 transitions, 1434 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-18 18:39:21,564 INFO L231 Difference]: Finished difference. Result has 297 places, 278 transitions, 1099 flow [2022-11-18 18:39:21,565 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=1075, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1099, PETRI_PLACES=297, PETRI_TRANSITIONS=278} [2022-11-18 18:39:21,566 INFO L288 CegarLoopForPetriNet]: 220 programPoint places, 77 predicate places. [2022-11-18 18:39:21,566 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 278 transitions, 1099 flow [2022-11-18 18:39:21,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 205.33333333333334) internal successors, (1232), 6 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:21,567 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:39:21,567 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] [2022-11-18 18:39:21,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54ebfa2-b758-42d4-9a43-9ca3c9565c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 18:39:21,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54ebfa2-b758-42d4-9a43-9ca3c9565c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-18 18:39:21,774 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2022-11-18 18:39:21,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:21,775 INFO L85 PathProgramCache]: Analyzing trace with hash 118160049, now seen corresponding path program 1 times [2022-11-18 18:39:21,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:21,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304635490] [2022-11-18 18:39:21,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:21,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:21,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:22,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:39:22,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:22,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304635490] [2022-11-18 18:39:22,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304635490] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:39:22,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519576424] [2022-11-18 18:39:22,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:22,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:39:22,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54ebfa2-b758-42d4-9a43-9ca3c9565c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:39:22,777 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54ebfa2-b758-42d4-9a43-9ca3c9565c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:39:22,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54ebfa2-b758-42d4-9a43-9ca3c9565c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 18:39:22,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:22,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-18 18:39:22,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:39:24,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-18 18:39:24,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:39:24,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:39:24,384 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-11-18 18:39:24,384 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 17 [2022-11-18 18:39:25,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:39:25,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519576424] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:39:25,530 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:39:25,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 10] total 36 [2022-11-18 18:39:25,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68357579] [2022-11-18 18:39:25,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:39:25,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-18 18:39:25,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:25,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-18 18:39:25,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=1086, Unknown=0, NotChecked=0, Total=1332 [2022-11-18 18:39:25,540 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 250 [2022-11-18 18:39:25,545 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 278 transitions, 1099 flow. Second operand has 37 states, 37 states have (on average 147.3783783783784) internal successors, (5453), 37 states have internal predecessors, (5453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:25,545 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:39:25,545 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 250 [2022-11-18 18:39:25,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:39:36,653 INFO L130 PetriNetUnfolder]: 18209/49198 cut-off events. [2022-11-18 18:39:36,654 INFO L131 PetriNetUnfolder]: For 19540/20852 co-relation queries the response was YES. [2022-11-18 18:39:36,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101662 conditions, 49198 events. 18209/49198 cut-off events. For 19540/20852 co-relation queries the response was YES. Maximal size of possible extension queue 1132. Compared 585410 event pairs, 5271 based on Foata normal form. 1088/38087 useless extension candidates. Maximal degree in co-relation 101319. Up to 11680 conditions per place. [2022-11-18 18:39:37,074 INFO L137 encePairwiseOnDemand]: 219/250 looper letters, 263 selfloop transitions, 68 changer transitions 1/458 dead transitions. [2022-11-18 18:39:37,074 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 458 transitions, 2353 flow [2022-11-18 18:39:37,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-18 18:39:37,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-18 18:39:37,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 5985 transitions. [2022-11-18 18:39:37,081 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5985 [2022-11-18 18:39:37,081 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 5985 transitions. [2022-11-18 18:39:37,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 5985 transitions. [2022-11-18 18:39:37,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:39:37,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 5985 transitions. [2022-11-18 18:39:37,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 149.625) internal successors, (5985), 40 states have internal predecessors, (5985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:37,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 250.0) internal successors, (10250), 41 states have internal predecessors, (10250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:37,114 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 250.0) internal successors, (10250), 41 states have internal predecessors, (10250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:37,114 INFO L175 Difference]: Start difference. First operand has 297 places, 278 transitions, 1099 flow. Second operand 40 states and 5985 transitions. [2022-11-18 18:39:37,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 458 transitions, 2353 flow [2022-11-18 18:39:37,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 458 transitions, 2327 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-11-18 18:39:37,211 INFO L231 Difference]: Finished difference. Result has 338 places, 310 transitions, 1382 flow [2022-11-18 18:39:37,212 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=1073, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=1382, PETRI_PLACES=338, PETRI_TRANSITIONS=310} [2022-11-18 18:39:37,215 INFO L288 CegarLoopForPetriNet]: 220 programPoint places, 118 predicate places. [2022-11-18 18:39:37,215 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 310 transitions, 1382 flow [2022-11-18 18:39:37,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 147.3783783783784) internal successors, (5453), 37 states have internal predecessors, (5453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:37,217 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:39:37,217 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] [2022-11-18 18:39:37,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54ebfa2-b758-42d4-9a43-9ca3c9565c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 18:39:37,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54ebfa2-b758-42d4-9a43-9ca3c9565c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:39:37,422 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2022-11-18 18:39:37,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:37,423 INFO L85 PathProgramCache]: Analyzing trace with hash 464387218, now seen corresponding path program 1 times [2022-11-18 18:39:37,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:37,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516012684] [2022-11-18 18:39:37,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:37,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:37,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:37,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:39:37,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:37,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516012684] [2022-11-18 18:39:37,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516012684] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:39:37,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891573173] [2022-11-18 18:39:37,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:37,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:39:37,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54ebfa2-b758-42d4-9a43-9ca3c9565c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:39:37,687 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54ebfa2-b758-42d4-9a43-9ca3c9565c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:39:37,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54ebfa2-b758-42d4-9a43-9ca3c9565c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 18:39:37,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:37,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 18:39:37,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:39:37,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:39:37,932 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:39:37,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891573173] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:39:37,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:39:37,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-18 18:39:37,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145625511] [2022-11-18 18:39:37,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:39:37,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:39:37,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:37,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:39:37,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:39:37,935 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 250 [2022-11-18 18:39:37,935 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 310 transitions, 1382 flow. Second operand has 4 states, 4 states have (on average 209.75) internal successors, (839), 4 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:37,936 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:39:37,936 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 250 [2022-11-18 18:39:37,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:39:40,621 INFO L130 PetriNetUnfolder]: 2865/13266 cut-off events. [2022-11-18 18:39:40,621 INFO L131 PetriNetUnfolder]: For 14190/14640 co-relation queries the response was YES. [2022-11-18 18:39:40,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30559 conditions, 13266 events. 2865/13266 cut-off events. For 14190/14640 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 149095 event pairs, 1828 based on Foata normal form. 774/12111 useless extension candidates. Maximal degree in co-relation 30234. Up to 5001 conditions per place. [2022-11-18 18:39:40,744 INFO L137 encePairwiseOnDemand]: 245/250 looper letters, 39 selfloop transitions, 3 changer transitions 0/306 dead transitions. [2022-11-18 18:39:40,744 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 306 transitions, 1438 flow [2022-11-18 18:39:40,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:39:40,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 18:39:40,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 849 transitions. [2022-11-18 18:39:40,746 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.849 [2022-11-18 18:39:40,746 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 849 transitions. [2022-11-18 18:39:40,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 849 transitions. [2022-11-18 18:39:40,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:39:40,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 849 transitions. [2022-11-18 18:39:40,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 212.25) internal successors, (849), 4 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:40,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:40,752 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:40,752 INFO L175 Difference]: Start difference. First operand has 338 places, 310 transitions, 1382 flow. Second operand 4 states and 849 transitions. [2022-11-18 18:39:40,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 306 transitions, 1438 flow [2022-11-18 18:39:40,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 306 transitions, 1377 flow, removed 6 selfloop flow, removed 17 redundant places. [2022-11-18 18:39:40,822 INFO L231 Difference]: Finished difference. Result has 322 places, 306 transitions, 1299 flow [2022-11-18 18:39:40,823 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=1293, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1299, PETRI_PLACES=322, PETRI_TRANSITIONS=306} [2022-11-18 18:39:40,823 INFO L288 CegarLoopForPetriNet]: 220 programPoint places, 102 predicate places. [2022-11-18 18:39:40,824 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 306 transitions, 1299 flow [2022-11-18 18:39:40,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 209.75) internal successors, (839), 4 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:40,824 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:39:40,824 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] [2022-11-18 18:39:40,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54ebfa2-b758-42d4-9a43-9ca3c9565c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 18:39:41,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c54ebfa2-b758-42d4-9a43-9ca3c9565c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 18:39:41,030 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2022-11-18 18:39:41,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:41,031 INFO L85 PathProgramCache]: Analyzing trace with hash 464387216, now seen corresponding path program 1 times [2022-11-18 18:39:41,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:41,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6475744] [2022-11-18 18:39:41,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:41,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:41,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat