./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-5.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a742d910-3152-4ace-a5cc-2fdb17c53ee8/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a742d910-3152-4ace-a5cc-2fdb17c53ee8/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a742d910-3152-4ace-a5cc-2fdb17c53ee8/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a742d910-3152-4ace-a5cc-2fdb17c53ee8/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-5.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a742d910-3152-4ace-a5cc-2fdb17c53ee8/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a742d910-3152-4ace-a5cc-2fdb17c53ee8/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3f696f3d7a078e1a0d9bb5ce793945c7092990826a45e57529562474d0b18f4a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:28:39,884 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:28:39,887 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:28:39,916 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:28:39,916 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:28:39,918 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:28:39,919 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:28:39,921 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:28:39,924 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:28:39,925 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:28:39,926 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:28:39,928 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:28:39,928 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:28:39,929 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:28:39,931 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:28:39,932 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:28:39,934 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:28:39,935 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:28:39,937 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:28:39,939 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:28:39,941 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:28:39,943 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:28:39,945 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:28:39,946 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:28:39,950 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:28:39,951 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:28:39,951 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:28:39,952 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:28:39,953 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:28:39,954 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:28:39,955 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:28:39,956 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:28:39,957 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:28:39,958 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:28:39,959 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:28:39,959 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:28:39,960 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:28:39,961 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:28:39,961 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:28:39,962 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:28:39,963 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:28:39,964 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a742d910-3152-4ace-a5cc-2fdb17c53ee8/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 11:28:39,996 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:28:39,997 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:28:39,997 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:28:39,998 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:28:39,999 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:28:39,999 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:28:40,000 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:28:40,000 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:28:40,001 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:28:40,001 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:28:40,001 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:28:40,002 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:28:40,002 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:28:40,002 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:28:40,003 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:28:40,003 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:28:40,003 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:28:40,004 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:28:40,004 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 11:28:40,004 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:28:40,005 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:28:40,005 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:28:40,006 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:28:40,006 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:28:40,006 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:28:40,007 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:28:40,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:28:40,007 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:28:40,008 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:28:40,008 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:28:40,008 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:28:40,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:28:40,009 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:28:40,009 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:28:40,010 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:28:40,010 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_a742d910-3152-4ace-a5cc-2fdb17c53ee8/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a742d910-3152-4ace-a5cc-2fdb17c53ee8/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f696f3d7a078e1a0d9bb5ce793945c7092990826a45e57529562474d0b18f4a [2022-11-16 11:28:40,315 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:28:40,342 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:28:40,345 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:28:40,348 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:28:40,349 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:28:40,350 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a742d910-3152-4ace-a5cc-2fdb17c53ee8/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/parallel-misc-5.wvr.c [2022-11-16 11:28:40,450 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a742d910-3152-4ace-a5cc-2fdb17c53ee8/bin/uautomizer-tPACEb0tL8/data/8784f1a85/9763b2b261bb4414ac5b0ddc90faf1a9/FLAG25489b577 [2022-11-16 11:28:41,061 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:28:41,061 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a742d910-3152-4ace-a5cc-2fdb17c53ee8/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c [2022-11-16 11:28:41,069 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a742d910-3152-4ace-a5cc-2fdb17c53ee8/bin/uautomizer-tPACEb0tL8/data/8784f1a85/9763b2b261bb4414ac5b0ddc90faf1a9/FLAG25489b577 [2022-11-16 11:28:41,421 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a742d910-3152-4ace-a5cc-2fdb17c53ee8/bin/uautomizer-tPACEb0tL8/data/8784f1a85/9763b2b261bb4414ac5b0ddc90faf1a9 [2022-11-16 11:28:41,423 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:28:41,425 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:28:41,431 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:28:41,431 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:28:41,436 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:28:41,437 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:28:41" (1/1) ... [2022-11-16 11:28:41,438 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d9eae23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:28:41, skipping insertion in model container [2022-11-16 11:28:41,438 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:28:41" (1/1) ... [2022-11-16 11:28:41,447 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:28:41,467 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:28:41,698 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a742d910-3152-4ace-a5cc-2fdb17c53ee8/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c[3027,3040] [2022-11-16 11:28:41,700 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:28:41,708 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:28:41,730 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a742d910-3152-4ace-a5cc-2fdb17c53ee8/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c[3027,3040] [2022-11-16 11:28:41,732 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:28:41,746 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:28:41,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:28:41 WrapperNode [2022-11-16 11:28:41,747 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:28:41,748 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:28:41,748 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:28:41,748 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:28:41,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:28:41" (1/1) ... [2022-11-16 11:28:41,764 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:28:41" (1/1) ... [2022-11-16 11:28:41,788 INFO L138 Inliner]: procedures = 22, calls = 45, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 159 [2022-11-16 11:28:41,788 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:28:41,789 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:28:41,789 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:28:41,790 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:28:41,801 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:28:41" (1/1) ... [2022-11-16 11:28:41,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:28:41" (1/1) ... [2022-11-16 11:28:41,805 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:28:41" (1/1) ... [2022-11-16 11:28:41,812 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:28:41" (1/1) ... [2022-11-16 11:28:41,818 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:28:41" (1/1) ... [2022-11-16 11:28:41,824 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:28:41" (1/1) ... [2022-11-16 11:28:41,826 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:28:41" (1/1) ... [2022-11-16 11:28:41,828 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:28:41" (1/1) ... [2022-11-16 11:28:41,830 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:28:41,831 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:28:41,832 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:28:41,832 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:28:41,833 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:28:41" (1/1) ... [2022-11-16 11:28:41,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:28:41,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a742d910-3152-4ace-a5cc-2fdb17c53ee8/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:28:41,878 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a742d910-3152-4ace-a5cc-2fdb17c53ee8/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:28:41,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a742d910-3152-4ace-a5cc-2fdb17c53ee8/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:28:41,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:28:41,921 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 11:28:41,921 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 11:28:41,921 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 11:28:41,922 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 11:28:41,922 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 11:28:41,922 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 11:28:41,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:28:41,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:28:41,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:28:41,923 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 11:28:41,923 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 11:28:41,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:28:41,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:28:41,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:28:41,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:28:41,926 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:28:42,030 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:28:42,032 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:28:42,448 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:28:42,674 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:28:42,674 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 11:28:42,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:28:42 BoogieIcfgContainer [2022-11-16 11:28:42,678 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:28:42,685 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:28:42,685 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:28:42,690 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:28:42,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:28:41" (1/3) ... [2022-11-16 11:28:42,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1368988c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:28:42, skipping insertion in model container [2022-11-16 11:28:42,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:28:41" (2/3) ... [2022-11-16 11:28:42,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1368988c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:28:42, skipping insertion in model container [2022-11-16 11:28:42,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:28:42" (3/3) ... [2022-11-16 11:28:42,694 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-5.wvr.c [2022-11-16 11:28:42,706 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:28:42,717 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:28:42,718 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-11-16 11:28:42,718 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:28:42,839 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 11:28:42,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 124 transitions, 272 flow [2022-11-16 11:28:43,094 INFO L130 PetriNetUnfolder]: 7/121 cut-off events. [2022-11-16 11:28:43,094 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 11:28:43,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 121 events. 7/121 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 172 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 99. Up to 2 conditions per place. [2022-11-16 11:28:43,102 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 124 transitions, 272 flow [2022-11-16 11:28:43,109 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 108 places, 105 transitions, 222 flow [2022-11-16 11:28:43,128 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:28:43,134 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;@62234d0b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:28:43,135 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2022-11-16 11:28:43,170 INFO L130 PetriNetUnfolder]: 3/57 cut-off events. [2022-11-16 11:28:43,171 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:28:43,171 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:28:43,172 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] [2022-11-16 11:28:43,173 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-16 11:28:43,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:28:43,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1309411753, now seen corresponding path program 1 times [2022-11-16 11:28:43,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:28:43,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980984203] [2022-11-16 11:28:43,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:28:43,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:28:43,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:28:43,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:28:43,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:28:43,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980984203] [2022-11-16 11:28:43,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980984203] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:28:43,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:28:43,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:28:43,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853448823] [2022-11-16 11:28:43,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:28:43,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:28:43,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:28:43,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:28:43,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:28:43,827 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 124 [2022-11-16 11:28:43,831 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 105 transitions, 222 flow. Second operand has 5 states, 5 states have (on average 87.6) internal successors, (438), 5 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:43,831 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:28:43,831 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 124 [2022-11-16 11:28:43,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:28:44,484 INFO L130 PetriNetUnfolder]: 1169/2237 cut-off events. [2022-11-16 11:28:44,484 INFO L131 PetriNetUnfolder]: For 275/275 co-relation queries the response was YES. [2022-11-16 11:28:44,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4090 conditions, 2237 events. 1169/2237 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 14598 event pairs, 213 based on Foata normal form. 152/1334 useless extension candidates. Maximal degree in co-relation 3671. Up to 1008 conditions per place. [2022-11-16 11:28:44,511 INFO L137 encePairwiseOnDemand]: 100/124 looper letters, 32 selfloop transitions, 15 changer transitions 1/118 dead transitions. [2022-11-16 11:28:44,511 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 118 transitions, 353 flow [2022-11-16 11:28:44,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:28:44,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:28:44,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 491 transitions. [2022-11-16 11:28:44,527 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7919354838709678 [2022-11-16 11:28:44,528 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 491 transitions. [2022-11-16 11:28:44,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 491 transitions. [2022-11-16 11:28:44,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:28:44,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 491 transitions. [2022-11-16 11:28:44,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 98.2) internal successors, (491), 5 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:44,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:44,544 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:44,546 INFO L175 Difference]: Start difference. First operand has 108 places, 105 transitions, 222 flow. Second operand 5 states and 491 transitions. [2022-11-16 11:28:44,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 118 transitions, 353 flow [2022-11-16 11:28:44,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 118 transitions, 343 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:28:44,556 INFO L231 Difference]: Finished difference. Result has 108 places, 109 transitions, 308 flow [2022-11-16 11:28:44,558 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=308, PETRI_PLACES=108, PETRI_TRANSITIONS=109} [2022-11-16 11:28:44,563 INFO L288 CegarLoopForPetriNet]: 108 programPoint places, 0 predicate places. [2022-11-16 11:28:44,563 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 109 transitions, 308 flow [2022-11-16 11:28:44,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.6) internal successors, (438), 5 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:44,564 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:28:44,564 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] [2022-11-16 11:28:44,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:28:44,565 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-16 11:28:44,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:28:44,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1309411752, now seen corresponding path program 1 times [2022-11-16 11:28:44,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:28:44,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600654373] [2022-11-16 11:28:44,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:28:44,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:28:44,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:28:44,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:28:44,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:28:44,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600654373] [2022-11-16 11:28:44,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600654373] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:28:44,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:28:44,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:28:44,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298652997] [2022-11-16 11:28:44,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:28:44,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:28:44,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:28:44,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:28:44,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:28:44,673 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 124 [2022-11-16 11:28:44,674 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 109 transitions, 308 flow. Second operand has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:44,674 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:28:44,675 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 124 [2022-11-16 11:28:44,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:28:45,115 INFO L130 PetriNetUnfolder]: 957/1754 cut-off events. [2022-11-16 11:28:45,115 INFO L131 PetriNetUnfolder]: For 752/752 co-relation queries the response was YES. [2022-11-16 11:28:45,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4168 conditions, 1754 events. 957/1754 cut-off events. For 752/752 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 10339 event pairs, 274 based on Foata normal form. 123/1246 useless extension candidates. Maximal degree in co-relation 4011. Up to 1245 conditions per place. [2022-11-16 11:28:45,137 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 32 selfloop transitions, 3 changer transitions 0/105 dead transitions. [2022-11-16 11:28:45,137 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 105 transitions, 358 flow [2022-11-16 11:28:45,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:28:45,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:28:45,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 377 transitions. [2022-11-16 11:28:45,142 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7600806451612904 [2022-11-16 11:28:45,142 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 377 transitions. [2022-11-16 11:28:45,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 377 transitions. [2022-11-16 11:28:45,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:28:45,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 377 transitions. [2022-11-16 11:28:45,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:45,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:45,148 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:45,148 INFO L175 Difference]: Start difference. First operand has 108 places, 109 transitions, 308 flow. Second operand 4 states and 377 transitions. [2022-11-16 11:28:45,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 105 transitions, 358 flow [2022-11-16 11:28:45,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 105 transitions, 354 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:28:45,154 INFO L231 Difference]: Finished difference. Result has 106 places, 105 transitions, 290 flow [2022-11-16 11:28:45,155 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=290, PETRI_PLACES=106, PETRI_TRANSITIONS=105} [2022-11-16 11:28:45,156 INFO L288 CegarLoopForPetriNet]: 108 programPoint places, -2 predicate places. [2022-11-16 11:28:45,157 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 105 transitions, 290 flow [2022-11-16 11:28:45,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:45,158 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:28:45,158 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] [2022-11-16 11:28:45,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:28:45,159 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-16 11:28:45,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:28:45,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1309411751, now seen corresponding path program 1 times [2022-11-16 11:28:45,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:28:45,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352793173] [2022-11-16 11:28:45,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:28:45,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:28:45,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:28:45,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:28:45,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:28:45,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352793173] [2022-11-16 11:28:45,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352793173] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:28:45,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:28:45,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:28:45,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368837953] [2022-11-16 11:28:45,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:28:45,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:28:45,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:28:45,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:28:45,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:28:45,410 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 124 [2022-11-16 11:28:45,410 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 105 transitions, 290 flow. Second operand has 5 states, 5 states have (on average 86.0) internal successors, (430), 5 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:45,412 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:28:45,412 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 124 [2022-11-16 11:28:45,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:28:45,886 INFO L130 PetriNetUnfolder]: 1171/2142 cut-off events. [2022-11-16 11:28:45,886 INFO L131 PetriNetUnfolder]: For 658/658 co-relation queries the response was YES. [2022-11-16 11:28:45,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5113 conditions, 2142 events. 1171/2142 cut-off events. For 658/658 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 13214 event pairs, 136 based on Foata normal form. 47/1470 useless extension candidates. Maximal degree in co-relation 5076. Up to 932 conditions per place. [2022-11-16 11:28:45,911 INFO L137 encePairwiseOnDemand]: 115/124 looper letters, 52 selfloop transitions, 7 changer transitions 0/127 dead transitions. [2022-11-16 11:28:45,912 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 127 transitions, 499 flow [2022-11-16 11:28:45,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:28:45,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:28:45,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 468 transitions. [2022-11-16 11:28:45,917 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7548387096774194 [2022-11-16 11:28:45,917 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 468 transitions. [2022-11-16 11:28:45,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 468 transitions. [2022-11-16 11:28:45,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:28:45,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 468 transitions. [2022-11-16 11:28:45,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 93.6) internal successors, (468), 5 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:45,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:45,922 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:45,922 INFO L175 Difference]: Start difference. First operand has 106 places, 105 transitions, 290 flow. Second operand 5 states and 468 transitions. [2022-11-16 11:28:45,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 127 transitions, 499 flow [2022-11-16 11:28:45,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 127 transitions, 493 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:28:45,930 INFO L231 Difference]: Finished difference. Result has 109 places, 109 transitions, 340 flow [2022-11-16 11:28:45,930 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=340, PETRI_PLACES=109, PETRI_TRANSITIONS=109} [2022-11-16 11:28:45,933 INFO L288 CegarLoopForPetriNet]: 108 programPoint places, 1 predicate places. [2022-11-16 11:28:45,933 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 109 transitions, 340 flow [2022-11-16 11:28:45,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.0) internal successors, (430), 5 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:45,934 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:28:45,935 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] [2022-11-16 11:28:45,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:28:45,935 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-16 11:28:45,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:28:45,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1309411750, now seen corresponding path program 1 times [2022-11-16 11:28:45,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:28:45,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596685931] [2022-11-16 11:28:45,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:28:45,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:28:45,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:28:46,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:28:46,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:28:46,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596685931] [2022-11-16 11:28:46,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596685931] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:28:46,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:28:46,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:28:46,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210135217] [2022-11-16 11:28:46,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:28:46,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:28:46,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:28:46,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:28:46,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:28:46,083 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 124 [2022-11-16 11:28:46,084 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 109 transitions, 340 flow. Second operand has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:46,084 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:28:46,084 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 124 [2022-11-16 11:28:46,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:28:46,346 INFO L130 PetriNetUnfolder]: 612/1183 cut-off events. [2022-11-16 11:28:46,347 INFO L131 PetriNetUnfolder]: For 736/736 co-relation queries the response was YES. [2022-11-16 11:28:46,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3113 conditions, 1183 events. 612/1183 cut-off events. For 736/736 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 6609 event pairs, 163 based on Foata normal form. 72/970 useless extension candidates. Maximal degree in co-relation 2997. Up to 835 conditions per place. [2022-11-16 11:28:46,362 INFO L137 encePairwiseOnDemand]: 120/124 looper letters, 31 selfloop transitions, 3 changer transitions 0/105 dead transitions. [2022-11-16 11:28:46,363 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 105 transitions, 376 flow [2022-11-16 11:28:46,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:28:46,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:28:46,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 378 transitions. [2022-11-16 11:28:46,365 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7620967741935484 [2022-11-16 11:28:46,365 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 378 transitions. [2022-11-16 11:28:46,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 378 transitions. [2022-11-16 11:28:46,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:28:46,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 378 transitions. [2022-11-16 11:28:46,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.5) internal successors, (378), 4 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:46,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:46,370 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:46,370 INFO L175 Difference]: Start difference. First operand has 109 places, 109 transitions, 340 flow. Second operand 4 states and 378 transitions. [2022-11-16 11:28:46,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 105 transitions, 376 flow [2022-11-16 11:28:46,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 105 transitions, 366 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:28:46,396 INFO L231 Difference]: Finished difference. Result has 107 places, 105 transitions, 304 flow [2022-11-16 11:28:46,396 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=304, PETRI_PLACES=107, PETRI_TRANSITIONS=105} [2022-11-16 11:28:46,397 INFO L288 CegarLoopForPetriNet]: 108 programPoint places, -1 predicate places. [2022-11-16 11:28:46,397 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 105 transitions, 304 flow [2022-11-16 11:28:46,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:46,398 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:28:46,399 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] [2022-11-16 11:28:46,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:28:46,399 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-16 11:28:46,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:28:46,400 INFO L85 PathProgramCache]: Analyzing trace with hash 165338200, now seen corresponding path program 1 times [2022-11-16 11:28:46,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:28:46,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615238451] [2022-11-16 11:28:46,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:28:46,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:28:46,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:28:46,543 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:28:46,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:28:46,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615238451] [2022-11-16 11:28:46,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615238451] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:28:46,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610390937] [2022-11-16 11:28:46,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:28:46,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:28:46,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a742d910-3152-4ace-a5cc-2fdb17c53ee8/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:28:46,551 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a742d910-3152-4ace-a5cc-2fdb17c53ee8/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:28:46,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a742d910-3152-4ace-a5cc-2fdb17c53ee8/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:28:46,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:28:46,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:28:46,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:28:46,887 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:28:46,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:28:47,016 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:28:47,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610390937] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:28:47,018 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:28:47,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2022-11-16 11:28:47,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232431311] [2022-11-16 11:28:47,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:28:47,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 11:28:47,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:28:47,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 11:28:47,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:28:47,024 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 124 [2022-11-16 11:28:47,027 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 105 transitions, 304 flow. Second operand has 13 states, 13 states have (on average 87.6923076923077) internal successors, (1140), 13 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:47,027 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:28:47,027 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 124 [2022-11-16 11:28:47,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:28:48,069 INFO L130 PetriNetUnfolder]: 2355/4926 cut-off events. [2022-11-16 11:28:48,070 INFO L131 PetriNetUnfolder]: For 2283/2283 co-relation queries the response was YES. [2022-11-16 11:28:48,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11330 conditions, 4926 events. 2355/4926 cut-off events. For 2283/2283 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 37311 event pairs, 49 based on Foata normal form. 309/4175 useless extension candidates. Maximal degree in co-relation 11290. Up to 1265 conditions per place. [2022-11-16 11:28:48,122 INFO L137 encePairwiseOnDemand]: 104/124 looper letters, 57 selfloop transitions, 57 changer transitions 0/184 dead transitions. [2022-11-16 11:28:48,122 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 184 transitions, 863 flow [2022-11-16 11:28:48,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:28:48,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 11:28:48,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 974 transitions. [2022-11-16 11:28:48,126 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.785483870967742 [2022-11-16 11:28:48,126 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 974 transitions. [2022-11-16 11:28:48,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 974 transitions. [2022-11-16 11:28:48,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:28:48,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 974 transitions. [2022-11-16 11:28:48,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 97.4) internal successors, (974), 10 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:48,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 124.0) internal successors, (1364), 11 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:48,133 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 124.0) internal successors, (1364), 11 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:48,133 INFO L175 Difference]: Start difference. First operand has 107 places, 105 transitions, 304 flow. Second operand 10 states and 974 transitions. [2022-11-16 11:28:48,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 184 transitions, 863 flow [2022-11-16 11:28:48,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 184 transitions, 857 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:28:48,139 INFO L231 Difference]: Finished difference. Result has 118 places, 152 transitions, 810 flow [2022-11-16 11:28:48,140 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=810, PETRI_PLACES=118, PETRI_TRANSITIONS=152} [2022-11-16 11:28:48,141 INFO L288 CegarLoopForPetriNet]: 108 programPoint places, 10 predicate places. [2022-11-16 11:28:48,141 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 152 transitions, 810 flow [2022-11-16 11:28:48,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 87.6923076923077) internal successors, (1140), 13 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:48,142 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:28:48,142 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] [2022-11-16 11:28:48,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a742d910-3152-4ace-a5cc-2fdb17c53ee8/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:28:48,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a742d910-3152-4ace-a5cc-2fdb17c53ee8/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:28:48,349 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-16 11:28:48,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:28:48,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1880750772, now seen corresponding path program 1 times [2022-11-16 11:28:48,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:28:48,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331360824] [2022-11-16 11:28:48,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:28:48,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:28:48,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:28:48,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:28:48,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:28:48,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331360824] [2022-11-16 11:28:48,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331360824] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:28:48,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:28:48,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:28:48,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333482986] [2022-11-16 11:28:48,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:28:48,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:28:48,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:28:48,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:28:48,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:28:48,546 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 124 [2022-11-16 11:28:48,549 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 152 transitions, 810 flow. Second operand has 6 states, 6 states have (on average 87.66666666666667) internal successors, (526), 6 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:48,549 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:28:48,549 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 124 [2022-11-16 11:28:48,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:28:50,430 INFO L130 PetriNetUnfolder]: 4360/9651 cut-off events. [2022-11-16 11:28:50,430 INFO L131 PetriNetUnfolder]: For 20883/20883 co-relation queries the response was YES. [2022-11-16 11:28:50,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30805 conditions, 9651 events. 4360/9651 cut-off events. For 20883/20883 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 85141 event pairs, 376 based on Foata normal form. 355/8025 useless extension candidates. Maximal degree in co-relation 20250. Up to 2785 conditions per place. [2022-11-16 11:28:50,555 INFO L137 encePairwiseOnDemand]: 104/124 looper letters, 102 selfloop transitions, 60 changer transitions 0/232 dead transitions. [2022-11-16 11:28:50,555 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 232 transitions, 1773 flow [2022-11-16 11:28:50,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:28:50,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:28:50,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 580 transitions. [2022-11-16 11:28:50,558 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7795698924731183 [2022-11-16 11:28:50,558 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 580 transitions. [2022-11-16 11:28:50,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 580 transitions. [2022-11-16 11:28:50,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:28:50,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 580 transitions. [2022-11-16 11:28:50,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 96.66666666666667) internal successors, (580), 6 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:50,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:50,563 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:50,564 INFO L175 Difference]: Start difference. First operand has 118 places, 152 transitions, 810 flow. Second operand 6 states and 580 transitions. [2022-11-16 11:28:50,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 232 transitions, 1773 flow [2022-11-16 11:28:50,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 232 transitions, 1697 flow, removed 35 selfloop flow, removed 3 redundant places. [2022-11-16 11:28:50,642 INFO L231 Difference]: Finished difference. Result has 122 places, 204 transitions, 1563 flow [2022-11-16 11:28:50,643 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=774, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1563, PETRI_PLACES=122, PETRI_TRANSITIONS=204} [2022-11-16 11:28:50,644 INFO L288 CegarLoopForPetriNet]: 108 programPoint places, 14 predicate places. [2022-11-16 11:28:50,644 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 204 transitions, 1563 flow [2022-11-16 11:28:50,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 87.66666666666667) internal successors, (526), 6 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:50,645 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:28:50,645 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] [2022-11-16 11:28:50,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:28:50,646 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-16 11:28:50,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:28:50,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1880024459, now seen corresponding path program 1 times [2022-11-16 11:28:50,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:28:50,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112409067] [2022-11-16 11:28:50,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:28:50,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:28:50,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:28:50,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:28:50,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:28:50,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112409067] [2022-11-16 11:28:50,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112409067] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:28:50,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:28:50,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:28:50,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572708066] [2022-11-16 11:28:50,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:28:50,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:28:50,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:28:50,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:28:50,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:28:50,728 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 124 [2022-11-16 11:28:50,728 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 204 transitions, 1563 flow. Second operand has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:50,729 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:28:50,729 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 124 [2022-11-16 11:28:50,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:28:51,809 INFO L130 PetriNetUnfolder]: 2158/5357 cut-off events. [2022-11-16 11:28:51,809 INFO L131 PetriNetUnfolder]: For 16900/16900 co-relation queries the response was YES. [2022-11-16 11:28:51,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19402 conditions, 5357 events. 2158/5357 cut-off events. For 16900/16900 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 45564 event pairs, 366 based on Foata normal form. 0/4359 useless extension candidates. Maximal degree in co-relation 18900. Up to 2848 conditions per place. [2022-11-16 11:28:51,888 INFO L137 encePairwiseOnDemand]: 120/124 looper letters, 119 selfloop transitions, 3 changer transitions 0/193 dead transitions. [2022-11-16 11:28:51,888 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 193 transitions, 1702 flow [2022-11-16 11:28:51,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:28:51,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:28:51,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 377 transitions. [2022-11-16 11:28:51,891 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7600806451612904 [2022-11-16 11:28:51,891 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 377 transitions. [2022-11-16 11:28:51,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 377 transitions. [2022-11-16 11:28:51,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:28:51,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 377 transitions. [2022-11-16 11:28:51,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:51,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:51,895 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:51,895 INFO L175 Difference]: Start difference. First operand has 122 places, 204 transitions, 1563 flow. Second operand 4 states and 377 transitions. [2022-11-16 11:28:51,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 193 transitions, 1702 flow [2022-11-16 11:28:51,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 193 transitions, 1644 flow, removed 27 selfloop flow, removed 2 redundant places. [2022-11-16 11:28:51,941 INFO L231 Difference]: Finished difference. Result has 122 places, 193 transitions, 1406 flow [2022-11-16 11:28:51,941 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=1400, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1406, PETRI_PLACES=122, PETRI_TRANSITIONS=193} [2022-11-16 11:28:51,942 INFO L288 CegarLoopForPetriNet]: 108 programPoint places, 14 predicate places. [2022-11-16 11:28:51,942 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 193 transitions, 1406 flow [2022-11-16 11:28:51,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:51,943 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:28:51,943 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] [2022-11-16 11:28:51,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:28:51,944 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-16 11:28:51,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:28:51,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1880024460, now seen corresponding path program 1 times [2022-11-16 11:28:51,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:28:51,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160069690] [2022-11-16 11:28:51,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:28:51,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:28:51,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:28:52,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:28:52,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:28:52,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160069690] [2022-11-16 11:28:52,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160069690] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:28:52,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:28:52,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:28:52,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162328510] [2022-11-16 11:28:52,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:28:52,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:28:52,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:28:52,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:28:52,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:28:52,078 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 124 [2022-11-16 11:28:52,079 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 193 transitions, 1406 flow. Second operand has 5 states, 5 states have (on average 86.2) internal successors, (431), 5 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:52,079 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:28:52,079 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 124 [2022-11-16 11:28:52,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:28:53,790 INFO L130 PetriNetUnfolder]: 3897/9708 cut-off events. [2022-11-16 11:28:53,790 INFO L131 PetriNetUnfolder]: For 30438/30438 co-relation queries the response was YES. [2022-11-16 11:28:53,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32085 conditions, 9708 events. 3897/9708 cut-off events. For 30438/30438 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 93179 event pairs, 346 based on Foata normal form. 74/8135 useless extension candidates. Maximal degree in co-relation 32027. Up to 3839 conditions per place. [2022-11-16 11:28:53,915 INFO L137 encePairwiseOnDemand]: 116/124 looper letters, 180 selfloop transitions, 18 changer transitions 0/266 dead transitions. [2022-11-16 11:28:53,915 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 266 transitions, 2564 flow [2022-11-16 11:28:53,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:28:53,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:28:53,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 465 transitions. [2022-11-16 11:28:53,918 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.75 [2022-11-16 11:28:53,918 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 465 transitions. [2022-11-16 11:28:53,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 465 transitions. [2022-11-16 11:28:53,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:28:53,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 465 transitions. [2022-11-16 11:28:53,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 93.0) internal successors, (465), 5 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:53,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:53,922 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:53,923 INFO L175 Difference]: Start difference. First operand has 122 places, 193 transitions, 1406 flow. Second operand 5 states and 465 transitions. [2022-11-16 11:28:53,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 266 transitions, 2564 flow [2022-11-16 11:28:54,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 266 transitions, 2558 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:28:54,017 INFO L231 Difference]: Finished difference. Result has 124 places, 205 transitions, 1646 flow [2022-11-16 11:28:54,018 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=1378, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1646, PETRI_PLACES=124, PETRI_TRANSITIONS=205} [2022-11-16 11:28:54,022 INFO L288 CegarLoopForPetriNet]: 108 programPoint places, 16 predicate places. [2022-11-16 11:28:54,022 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 205 transitions, 1646 flow [2022-11-16 11:28:54,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.2) internal successors, (431), 5 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:54,024 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:28:54,025 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-16 11:28:54,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:28:54,025 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-16 11:28:54,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:28:54,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1673745339, now seen corresponding path program 1 times [2022-11-16 11:28:54,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:28:54,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754179819] [2022-11-16 11:28:54,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:28:54,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:28:54,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:28:54,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:28:54,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:28:54,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754179819] [2022-11-16 11:28:54,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754179819] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:28:54,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800132141] [2022-11-16 11:28:54,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:28:54,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:28:54,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a742d910-3152-4ace-a5cc-2fdb17c53ee8/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:28:54,301 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a742d910-3152-4ace-a5cc-2fdb17c53ee8/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:28:54,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a742d910-3152-4ace-a5cc-2fdb17c53ee8/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:28:54,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:28:54,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 11:28:54,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:28:54,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:28:54,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:28:54,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:28:54,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800132141] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:28:54,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:28:54,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 12 [2022-11-16 11:28:54,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339411422] [2022-11-16 11:28:54,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:28:54,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:28:54,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:28:54,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:28:54,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:28:54,814 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 124 [2022-11-16 11:28:54,815 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 205 transitions, 1646 flow. Second operand has 6 states, 6 states have (on average 86.16666666666667) internal successors, (517), 6 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:54,815 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:28:54,815 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 124 [2022-11-16 11:28:54,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:28:57,686 INFO L130 PetriNetUnfolder]: 5752/15272 cut-off events. [2022-11-16 11:28:57,687 INFO L131 PetriNetUnfolder]: For 60859/60859 co-relation queries the response was YES. [2022-11-16 11:28:57,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50908 conditions, 15272 events. 5752/15272 cut-off events. For 60859/60859 co-relation queries the response was YES. Maximal size of possible extension queue 721. Compared 164693 event pairs, 287 based on Foata normal form. 380/14029 useless extension candidates. Maximal degree in co-relation 49930. Up to 4653 conditions per place. [2022-11-16 11:28:57,860 INFO L137 encePairwiseOnDemand]: 107/124 looper letters, 212 selfloop transitions, 41 changer transitions 0/321 dead transitions. [2022-11-16 11:28:57,861 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 321 transitions, 3435 flow [2022-11-16 11:28:57,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:28:57,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:28:57,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 565 transitions. [2022-11-16 11:28:57,864 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7594086021505376 [2022-11-16 11:28:57,864 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 565 transitions. [2022-11-16 11:28:57,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 565 transitions. [2022-11-16 11:28:57,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:28:57,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 565 transitions. [2022-11-16 11:28:57,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.16666666666667) internal successors, (565), 6 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:57,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:57,869 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:57,869 INFO L175 Difference]: Start difference. First operand has 124 places, 205 transitions, 1646 flow. Second operand 6 states and 565 transitions. [2022-11-16 11:28:57,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 321 transitions, 3435 flow [2022-11-16 11:28:57,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 321 transitions, 3399 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:28:57,991 INFO L231 Difference]: Finished difference. Result has 129 places, 237 transitions, 2271 flow [2022-11-16 11:28:57,992 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=1626, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2271, PETRI_PLACES=129, PETRI_TRANSITIONS=237} [2022-11-16 11:28:57,993 INFO L288 CegarLoopForPetriNet]: 108 programPoint places, 21 predicate places. [2022-11-16 11:28:57,993 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 237 transitions, 2271 flow [2022-11-16 11:28:57,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.16666666666667) internal successors, (517), 6 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:57,993 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:28:57,994 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:28:58,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a742d910-3152-4ace-a5cc-2fdb17c53ee8/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:28:58,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a742d910-3152-4ace-a5cc-2fdb17c53ee8/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:28:58,201 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-16 11:28:58,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:28:58,202 INFO L85 PathProgramCache]: Analyzing trace with hash -2049618363, now seen corresponding path program 1 times [2022-11-16 11:28:58,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:28:58,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873957112] [2022-11-16 11:28:58,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:28:58,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:28:58,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:28:58,298 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:28:58,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:28:58,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873957112] [2022-11-16 11:28:58,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873957112] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:28:58,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:28:58,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:28:58,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056569523] [2022-11-16 11:28:58,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:28:58,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:28:58,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:28:58,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:28:58,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:28:58,302 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 124 [2022-11-16 11:28:58,302 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 237 transitions, 2271 flow. Second operand has 4 states, 4 states have (on average 90.5) internal successors, (362), 4 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:58,303 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:28:58,303 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 124 [2022-11-16 11:28:58,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:28:59,885 INFO L130 PetriNetUnfolder]: 3149/9162 cut-off events. [2022-11-16 11:28:59,885 INFO L131 PetriNetUnfolder]: For 48917/48917 co-relation queries the response was YES. [2022-11-16 11:28:59,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32835 conditions, 9162 events. 3149/9162 cut-off events. For 48917/48917 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 95624 event pairs, 588 based on Foata normal form. 207/8347 useless extension candidates. Maximal degree in co-relation 31821. Up to 4286 conditions per place. [2022-11-16 11:28:59,979 INFO L137 encePairwiseOnDemand]: 120/124 looper letters, 147 selfloop transitions, 3 changer transitions 0/221 dead transitions. [2022-11-16 11:28:59,980 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 221 transitions, 2331 flow [2022-11-16 11:28:59,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:28:59,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:28:59,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 376 transitions. [2022-11-16 11:28:59,982 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7580645161290323 [2022-11-16 11:28:59,982 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 376 transitions. [2022-11-16 11:28:59,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 376 transitions. [2022-11-16 11:28:59,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:28:59,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 376 transitions. [2022-11-16 11:28:59,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:59,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:59,986 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:59,986 INFO L175 Difference]: Start difference. First operand has 129 places, 237 transitions, 2271 flow. Second operand 4 states and 376 transitions. [2022-11-16 11:28:59,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 221 transitions, 2331 flow [2022-11-16 11:29:00,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 221 transitions, 2321 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-11-16 11:29:00,069 INFO L231 Difference]: Finished difference. Result has 129 places, 221 transitions, 2027 flow [2022-11-16 11:29:00,069 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2021, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2027, PETRI_PLACES=129, PETRI_TRANSITIONS=221} [2022-11-16 11:29:00,070 INFO L288 CegarLoopForPetriNet]: 108 programPoint places, 21 predicate places. [2022-11-16 11:29:00,070 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 221 transitions, 2027 flow [2022-11-16 11:29:00,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.5) internal successors, (362), 4 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:00,070 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:29:00,071 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] [2022-11-16 11:29:00,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:29:00,071 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-16 11:29:00,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:29:00,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1564680634, now seen corresponding path program 1 times [2022-11-16 11:29:00,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:29:00,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200469474] [2022-11-16 11:29:00,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:29:00,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:29:00,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:29:00,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:29:00,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:29:00,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200469474] [2022-11-16 11:29:00,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200469474] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:29:00,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:29:00,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:29:00,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151779927] [2022-11-16 11:29:00,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:29:00,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:29:00,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:29:00,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:29:00,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:29:00,256 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 124 [2022-11-16 11:29:00,256 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 221 transitions, 2027 flow. Second operand has 5 states, 5 states have (on average 89.0) internal successors, (445), 5 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:00,257 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:29:00,257 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 124 [2022-11-16 11:29:00,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:29:01,735 INFO L130 PetriNetUnfolder]: 2775/8452 cut-off events. [2022-11-16 11:29:01,736 INFO L131 PetriNetUnfolder]: For 42686/42686 co-relation queries the response was YES. [2022-11-16 11:29:01,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29773 conditions, 8452 events. 2775/8452 cut-off events. For 42686/42686 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 89519 event pairs, 159 based on Foata normal form. 139/7633 useless extension candidates. Maximal degree in co-relation 29709. Up to 3622 conditions per place. [2022-11-16 11:29:01,803 INFO L137 encePairwiseOnDemand]: 113/124 looper letters, 177 selfloop transitions, 17 changer transitions 0/265 dead transitions. [2022-11-16 11:29:01,803 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 265 transitions, 2924 flow [2022-11-16 11:29:01,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:29:01,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:29:01,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 472 transitions. [2022-11-16 11:29:01,806 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7612903225806451 [2022-11-16 11:29:01,806 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 472 transitions. [2022-11-16 11:29:01,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 472 transitions. [2022-11-16 11:29:01,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:29:01,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 472 transitions. [2022-11-16 11:29:01,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.4) internal successors, (472), 5 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:01,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:01,810 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:01,811 INFO L175 Difference]: Start difference. First operand has 129 places, 221 transitions, 2027 flow. Second operand 5 states and 472 transitions. [2022-11-16 11:29:01,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 265 transitions, 2924 flow [2022-11-16 11:29:01,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 265 transitions, 2918 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:29:01,899 INFO L231 Difference]: Finished difference. Result has 131 places, 228 transitions, 2207 flow [2022-11-16 11:29:01,899 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=1973, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2207, PETRI_PLACES=131, PETRI_TRANSITIONS=228} [2022-11-16 11:29:01,900 INFO L288 CegarLoopForPetriNet]: 108 programPoint places, 23 predicate places. [2022-11-16 11:29:01,900 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 228 transitions, 2207 flow [2022-11-16 11:29:01,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 89.0) internal successors, (445), 5 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:01,901 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:29:01,901 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] [2022-11-16 11:29:01,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:29:01,902 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-16 11:29:01,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:29:01,902 INFO L85 PathProgramCache]: Analyzing trace with hash -987166759, now seen corresponding path program 1 times [2022-11-16 11:29:01,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:29:01,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168979483] [2022-11-16 11:29:01,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:29:01,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:29:01,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:29:02,127 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:29:02,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:29:02,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168979483] [2022-11-16 11:29:02,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168979483] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:29:02,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674286249] [2022-11-16 11:29:02,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:29:02,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:29:02,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a742d910-3152-4ace-a5cc-2fdb17c53ee8/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:29:02,130 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a742d910-3152-4ace-a5cc-2fdb17c53ee8/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:29:02,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a742d910-3152-4ace-a5cc-2fdb17c53ee8/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:29:02,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:29:02,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 11:29:02,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:29:02,326 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:29:02,327 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:29:02,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674286249] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:29:02,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:29:02,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2022-11-16 11:29:02,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71524691] [2022-11-16 11:29:02,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:29:02,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:29:02,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:29:02,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:29:02,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:29:02,330 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 124 [2022-11-16 11:29:02,331 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 228 transitions, 2207 flow. Second operand has 5 states, 5 states have (on average 89.2) internal successors, (446), 5 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:02,331 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:29:02,331 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 124 [2022-11-16 11:29:02,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:29:03,603 INFO L130 PetriNetUnfolder]: 1988/6590 cut-off events. [2022-11-16 11:29:03,603 INFO L131 PetriNetUnfolder]: For 36009/36009 co-relation queries the response was YES. [2022-11-16 11:29:03,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23025 conditions, 6590 events. 1988/6590 cut-off events. For 36009/36009 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 68670 event pairs, 75 based on Foata normal form. 94/5906 useless extension candidates. Maximal degree in co-relation 22406. Up to 2630 conditions per place. [2022-11-16 11:29:03,642 INFO L137 encePairwiseOnDemand]: 115/124 looper letters, 163 selfloop transitions, 14 changer transitions 0/248 dead transitions. [2022-11-16 11:29:03,643 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 248 transitions, 2777 flow [2022-11-16 11:29:03,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:29:03,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:29:03,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 556 transitions. [2022-11-16 11:29:03,645 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7473118279569892 [2022-11-16 11:29:03,645 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 556 transitions. [2022-11-16 11:29:03,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 556 transitions. [2022-11-16 11:29:03,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:29:03,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 556 transitions. [2022-11-16 11:29:03,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 92.66666666666667) internal successors, (556), 6 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:03,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:03,650 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:03,650 INFO L175 Difference]: Start difference. First operand has 131 places, 228 transitions, 2207 flow. Second operand 6 states and 556 transitions. [2022-11-16 11:29:03,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 248 transitions, 2777 flow [2022-11-16 11:29:03,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 248 transitions, 2702 flow, removed 29 selfloop flow, removed 3 redundant places. [2022-11-16 11:29:03,715 INFO L231 Difference]: Finished difference. Result has 134 places, 221 transitions, 2095 flow [2022-11-16 11:29:03,716 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2031, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2095, PETRI_PLACES=134, PETRI_TRANSITIONS=221} [2022-11-16 11:29:03,716 INFO L288 CegarLoopForPetriNet]: 108 programPoint places, 26 predicate places. [2022-11-16 11:29:03,717 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 221 transitions, 2095 flow [2022-11-16 11:29:03,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 89.2) internal successors, (446), 5 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:03,717 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:29:03,717 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2022-11-16 11:29:03,731 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a742d910-3152-4ace-a5cc-2fdb17c53ee8/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-16 11:29:03,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a742d910-3152-4ace-a5cc-2fdb17c53ee8/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-16 11:29:03,923 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-16 11:29:03,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:29:03,924 INFO L85 PathProgramCache]: Analyzing trace with hash 2049892247, now seen corresponding path program 2 times [2022-11-16 11:29:03,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:29:03,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731906624] [2022-11-16 11:29:03,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:29:03,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:29:03,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:29:04,124 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:29:04,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:29:04,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731906624] [2022-11-16 11:29:04,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731906624] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:29:04,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868858576] [2022-11-16 11:29:04,125 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:29:04,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:29:04,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a742d910-3152-4ace-a5cc-2fdb17c53ee8/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:29:04,127 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a742d910-3152-4ace-a5cc-2fdb17c53ee8/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:29:04,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a742d910-3152-4ace-a5cc-2fdb17c53ee8/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:29:04,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:29:04,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:29:04,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 11:29:04,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:29:04,408 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:29:04,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:29:04,582 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:29:04,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868858576] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:29:04,583 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:29:04,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2022-11-16 11:29:04,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496331836] [2022-11-16 11:29:04,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:29:04,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:29:04,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:29:04,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:29:04,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:29:04,589 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 124 [2022-11-16 11:29:04,591 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 221 transitions, 2095 flow. Second operand has 19 states, 19 states have (on average 87.47368421052632) internal successors, (1662), 19 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:04,591 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:29:04,591 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 124 [2022-11-16 11:29:04,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:29:10,053 INFO L130 PetriNetUnfolder]: 8343/27034 cut-off events. [2022-11-16 11:29:10,053 INFO L131 PetriNetUnfolder]: For 204644/204644 co-relation queries the response was YES. [2022-11-16 11:29:10,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85946 conditions, 27034 events. 8343/27034 cut-off events. For 204644/204644 co-relation queries the response was YES. Maximal size of possible extension queue 850. Compared 326193 event pairs, 47 based on Foata normal form. 2884/26717 useless extension candidates. Maximal degree in co-relation 84382. Up to 4754 conditions per place. [2022-11-16 11:29:10,267 INFO L137 encePairwiseOnDemand]: 106/124 looper letters, 150 selfloop transitions, 373 changer transitions 0/593 dead transitions. [2022-11-16 11:29:10,267 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 593 transitions, 7463 flow [2022-11-16 11:29:10,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 11:29:10,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-16 11:29:10,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1576 transitions. [2022-11-16 11:29:10,281 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7943548387096774 [2022-11-16 11:29:10,282 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1576 transitions. [2022-11-16 11:29:10,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1576 transitions. [2022-11-16 11:29:10,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:29:10,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1576 transitions. [2022-11-16 11:29:10,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 98.5) internal successors, (1576), 16 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:10,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:10,297 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:10,298 INFO L175 Difference]: Start difference. First operand has 134 places, 221 transitions, 2095 flow. Second operand 16 states and 1576 transitions. [2022-11-16 11:29:10,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 593 transitions, 7463 flow [2022-11-16 11:29:10,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 593 transitions, 7424 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:29:10,716 INFO L231 Difference]: Finished difference. Result has 155 places, 549 transitions, 8157 flow [2022-11-16 11:29:10,717 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2077, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=8157, PETRI_PLACES=155, PETRI_TRANSITIONS=549} [2022-11-16 11:29:10,718 INFO L288 CegarLoopForPetriNet]: 108 programPoint places, 47 predicate places. [2022-11-16 11:29:10,718 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 549 transitions, 8157 flow [2022-11-16 11:29:10,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 87.47368421052632) internal successors, (1662), 19 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:10,719 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:29:10,719 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 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] [2022-11-16 11:29:10,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a742d910-3152-4ace-a5cc-2fdb17c53ee8/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:29:10,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a742d910-3152-4ace-a5cc-2fdb17c53ee8/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-16 11:29:10,925 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-16 11:29:10,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:29:10,925 INFO L85 PathProgramCache]: Analyzing trace with hash -938060048, now seen corresponding path program 1 times [2022-11-16 11:29:10,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:29:10,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409325701] [2022-11-16 11:29:10,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:29:10,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:29:10,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:29:11,224 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:29:11,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:29:11,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409325701] [2022-11-16 11:29:11,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409325701] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:29:11,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781463138] [2022-11-16 11:29:11,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:29:11,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:29:11,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a742d910-3152-4ace-a5cc-2fdb17c53ee8/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:29:11,231 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a742d910-3152-4ace-a5cc-2fdb17c53ee8/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:29:11,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a742d910-3152-4ace-a5cc-2fdb17c53ee8/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:29:11,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:29:11,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:29:11,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:29:11,516 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:29:11,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:29:11,666 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:29:11,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781463138] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:29:11,667 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:29:11,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 14 [2022-11-16 11:29:11,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527592259] [2022-11-16 11:29:11,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:29:11,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 11:29:11,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:29:11,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 11:29:11,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:29:11,671 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 124 [2022-11-16 11:29:11,673 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 549 transitions, 8157 flow. Second operand has 15 states, 15 states have (on average 79.53333333333333) internal successors, (1193), 15 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:11,673 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:29:11,673 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 124 [2022-11-16 11:29:11,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand