./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-exp-term-subst.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_0a2a06e7-ad5d-49b2-b4ef-7815eef72089/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2a06e7-ad5d-49b2-b4ef-7815eef72089/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_0a2a06e7-ad5d-49b2-b4ef-7815eef72089/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2a06e7-ad5d-49b2-b4ef-7815eef72089/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-exp-term-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2a06e7-ad5d-49b2-b4ef-7815eef72089/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_0a2a06e7-ad5d-49b2-b4ef-7815eef72089/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 a4208e364fc80ce33bd799516b7b127a7314c394860a88240a88c2fb8dc1fa8b --- 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 12:31:42,995 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:31:42,998 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:31:43,042 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:31:43,044 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:31:43,048 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:31:43,050 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:31:43,054 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:31:43,056 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:31:43,058 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:31:43,059 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:31:43,062 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:31:43,063 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:31:43,068 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:31:43,070 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:31:43,071 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:31:43,073 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:31:43,076 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:31:43,077 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:31:43,080 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:31:43,085 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:31:43,087 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:31:43,088 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:31:43,089 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:31:43,096 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:31:43,100 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:31:43,100 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:31:43,101 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:31:43,102 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:31:43,103 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:31:43,103 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:31:43,104 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:31:43,105 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:31:43,107 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:31:43,108 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:31:43,109 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:31:43,110 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:31:43,111 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:31:43,111 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:31:43,112 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:31:43,112 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:31:43,113 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2a06e7-ad5d-49b2-b4ef-7815eef72089/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 12:31:43,148 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:31:43,149 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:31:43,149 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:31:43,150 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:31:43,150 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:31:43,151 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:31:43,151 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:31:43,152 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:31:43,152 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:31:43,152 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:31:43,153 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:31:43,153 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:31:43,153 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:31:43,154 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:31:43,154 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:31:43,154 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:31:43,154 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:31:43,155 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:31:43,155 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 12:31:43,155 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:31:43,155 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:31:43,155 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:31:43,156 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:31:43,156 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:31:43,156 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:31:43,156 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:31:43,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:31:43,158 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:31:43,158 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:31:43,158 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:31:43,159 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:31:43,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:31:43,159 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:31:43,159 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:31:43,160 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:31:43,160 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_0a2a06e7-ad5d-49b2-b4ef-7815eef72089/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2a06e7-ad5d-49b2-b4ef-7815eef72089/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a4208e364fc80ce33bd799516b7b127a7314c394860a88240a88c2fb8dc1fa8b [2022-11-16 12:31:43,448 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:31:43,469 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:31:43,472 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:31:43,473 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:31:43,474 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:31:43,475 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2a06e7-ad5d-49b2-b4ef-7815eef72089/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/chl-exp-term-subst.wvr.c [2022-11-16 12:31:43,549 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2a06e7-ad5d-49b2-b4ef-7815eef72089/bin/uautomizer-tPACEb0tL8/data/530378514/e1fbd56d57f64c96a7516a267fa3d486/FLAG61ab543b4 [2022-11-16 12:31:44,027 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:31:44,027 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2a06e7-ad5d-49b2-b4ef-7815eef72089/sv-benchmarks/c/weaver/chl-exp-term-subst.wvr.c [2022-11-16 12:31:44,038 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2a06e7-ad5d-49b2-b4ef-7815eef72089/bin/uautomizer-tPACEb0tL8/data/530378514/e1fbd56d57f64c96a7516a267fa3d486/FLAG61ab543b4 [2022-11-16 12:31:44,395 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2a06e7-ad5d-49b2-b4ef-7815eef72089/bin/uautomizer-tPACEb0tL8/data/530378514/e1fbd56d57f64c96a7516a267fa3d486 [2022-11-16 12:31:44,399 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:31:44,401 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:31:44,407 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:31:44,407 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:31:44,411 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:31:44,412 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:31:44" (1/1) ... [2022-11-16 12:31:44,413 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51391125 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:44, skipping insertion in model container [2022-11-16 12:31:44,413 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:31:44" (1/1) ... [2022-11-16 12:31:44,421 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:31:44,445 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:31:44,664 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_0a2a06e7-ad5d-49b2-b4ef-7815eef72089/sv-benchmarks/c/weaver/chl-exp-term-subst.wvr.c[3072,3085] [2022-11-16 12:31:44,668 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:31:44,675 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:31:44,700 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_0a2a06e7-ad5d-49b2-b4ef-7815eef72089/sv-benchmarks/c/weaver/chl-exp-term-subst.wvr.c[3072,3085] [2022-11-16 12:31:44,702 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:31:44,715 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:31:44,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:44 WrapperNode [2022-11-16 12:31:44,715 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:31:44,716 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:31:44,716 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:31:44,716 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:31:44,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:44" (1/1) ... [2022-11-16 12:31:44,731 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:44" (1/1) ... [2022-11-16 12:31:44,757 INFO L138 Inliner]: procedures = 23, calls = 31, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 218 [2022-11-16 12:31:44,757 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:31:44,758 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:31:44,758 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:31:44,758 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:31:44,767 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:44" (1/1) ... [2022-11-16 12:31:44,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:44" (1/1) ... [2022-11-16 12:31:44,771 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:44" (1/1) ... [2022-11-16 12:31:44,771 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:44" (1/1) ... [2022-11-16 12:31:44,777 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:44" (1/1) ... [2022-11-16 12:31:44,780 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:44" (1/1) ... [2022-11-16 12:31:44,781 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:44" (1/1) ... [2022-11-16 12:31:44,783 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:44" (1/1) ... [2022-11-16 12:31:44,786 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:31:44,787 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:31:44,787 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:31:44,787 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:31:44,796 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:44" (1/1) ... [2022-11-16 12:31:44,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:31:44,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2a06e7-ad5d-49b2-b4ef-7815eef72089/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:31:44,840 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2a06e7-ad5d-49b2-b4ef-7815eef72089/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:31:44,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2a06e7-ad5d-49b2-b4ef-7815eef72089/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:31:44,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:31:44,889 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 12:31:44,890 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 12:31:44,890 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 12:31:44,890 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 12:31:44,890 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 12:31:44,890 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 12:31:44,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:31:44,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:31:44,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:31:44,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:31:44,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:31:44,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:31:44,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:31:44,893 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 12:31:45,015 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:31:45,017 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:31:45,557 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:31:45,567 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:31:45,567 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 12:31:45,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:31:45 BoogieIcfgContainer [2022-11-16 12:31:45,570 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:31:45,573 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:31:45,573 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:31:45,576 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:31:45,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:31:44" (1/3) ... [2022-11-16 12:31:45,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc82549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:31:45, skipping insertion in model container [2022-11-16 12:31:45,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:44" (2/3) ... [2022-11-16 12:31:45,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc82549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:31:45, skipping insertion in model container [2022-11-16 12:31:45,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:31:45" (3/3) ... [2022-11-16 12:31:45,579 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-exp-term-subst.wvr.c [2022-11-16 12:31:45,588 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:31:45,599 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:31:45,599 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-16 12:31:45,600 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:31:45,714 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 12:31:45,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 284 places, 297 transitions, 618 flow [2022-11-16 12:31:45,882 INFO L130 PetriNetUnfolder]: 23/294 cut-off events. [2022-11-16 12:31:45,882 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 12:31:45,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 294 events. 23/294 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 807 event pairs, 0 based on Foata normal form. 0/253 useless extension candidates. Maximal degree in co-relation 220. Up to 2 conditions per place. [2022-11-16 12:31:45,911 INFO L82 GeneralOperation]: Start removeDead. Operand has 284 places, 297 transitions, 618 flow [2022-11-16 12:31:45,927 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 254 places, 265 transitions, 545 flow [2022-11-16 12:31:45,949 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:31:45,958 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;@3a15a987, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:31:45,958 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2022-11-16 12:31:46,004 INFO L130 PetriNetUnfolder]: 4/101 cut-off events. [2022-11-16 12:31:46,007 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:31:46,007 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:31:46,008 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] [2022-11-16 12:31:46,010 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 12:31:46,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:31:46,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1569440479, now seen corresponding path program 1 times [2022-11-16 12:31:46,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:31:46,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022565098] [2022-11-16 12:31:46,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:31:46,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:31:46,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:31:46,553 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 12:31:46,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:31:46,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022565098] [2022-11-16 12:31:46,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022565098] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:31:46,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:31:46,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:31:46,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777695575] [2022-11-16 12:31:46,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:31:46,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:31:46,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:31:46,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:31:46,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:31:46,608 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 297 [2022-11-16 12:31:46,621 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 265 transitions, 545 flow. Second operand has 6 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 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 12:31:46,622 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:31:46,622 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 297 [2022-11-16 12:31:46,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:31:47,182 INFO L130 PetriNetUnfolder]: 155/966 cut-off events. [2022-11-16 12:31:47,182 INFO L131 PetriNetUnfolder]: For 89/89 co-relation queries the response was YES. [2022-11-16 12:31:47,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1329 conditions, 966 events. 155/966 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 6029 event pairs, 16 based on Foata normal form. 178/970 useless extension candidates. Maximal degree in co-relation 1057. Up to 191 conditions per place. [2022-11-16 12:31:47,212 INFO L137 encePairwiseOnDemand]: 285/297 looper letters, 41 selfloop transitions, 5 changer transitions 0/270 dead transitions. [2022-11-16 12:31:47,212 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 270 transitions, 665 flow [2022-11-16 12:31:47,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:31:47,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:31:47,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1573 transitions. [2022-11-16 12:31:47,236 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8827160493827161 [2022-11-16 12:31:47,236 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1573 transitions. [2022-11-16 12:31:47,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1573 transitions. [2022-11-16 12:31:47,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:31:47,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1573 transitions. [2022-11-16 12:31:47,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 262.1666666666667) internal successors, (1573), 6 states have internal predecessors, (1573), 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 12:31:47,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 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 12:31:47,261 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 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 12:31:47,265 INFO L175 Difference]: Start difference. First operand has 254 places, 265 transitions, 545 flow. Second operand 6 states and 1573 transitions. [2022-11-16 12:31:47,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 270 transitions, 665 flow [2022-11-16 12:31:47,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 270 transitions, 646 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:31:47,276 INFO L231 Difference]: Finished difference. Result has 253 places, 258 transitions, 532 flow [2022-11-16 12:31:47,278 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=532, PETRI_PLACES=253, PETRI_TRANSITIONS=258} [2022-11-16 12:31:47,282 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, -1 predicate places. [2022-11-16 12:31:47,282 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 258 transitions, 532 flow [2022-11-16 12:31:47,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 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 12:31:47,284 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:31:47,284 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 12:31:47,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:31:47,284 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 12:31:47,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:31:47,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1408013846, now seen corresponding path program 1 times [2022-11-16 12:31:47,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:31:47,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431536277] [2022-11-16 12:31:47,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:31:47,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:31:47,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:31:47,472 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 12:31:47,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:31:47,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431536277] [2022-11-16 12:31:47,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431536277] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:31:47,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:31:47,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:31:47,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717148872] [2022-11-16 12:31:47,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:31:47,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:31:47,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:31:47,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:31:47,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:31:47,478 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 297 [2022-11-16 12:31:47,480 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 258 transitions, 532 flow. Second operand has 4 states, 4 states have (on average 260.75) internal successors, (1043), 4 states have internal predecessors, (1043), 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 12:31:47,480 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:31:47,480 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 297 [2022-11-16 12:31:47,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:31:47,723 INFO L130 PetriNetUnfolder]: 94/824 cut-off events. [2022-11-16 12:31:47,723 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-11-16 12:31:47,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1077 conditions, 824 events. 94/824 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 5425 event pairs, 24 based on Foata normal form. 0/699 useless extension candidates. Maximal degree in co-relation 690. Up to 71 conditions per place. [2022-11-16 12:31:47,741 INFO L137 encePairwiseOnDemand]: 291/297 looper letters, 37 selfloop transitions, 4 changer transitions 0/272 dead transitions. [2022-11-16 12:31:47,741 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 272 transitions, 650 flow [2022-11-16 12:31:47,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:31:47,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:31:47,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1079 transitions. [2022-11-16 12:31:47,744 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9082491582491582 [2022-11-16 12:31:47,744 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1079 transitions. [2022-11-16 12:31:47,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1079 transitions. [2022-11-16 12:31:47,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:31:47,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1079 transitions. [2022-11-16 12:31:47,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 269.75) internal successors, (1079), 4 states have internal predecessors, (1079), 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 12:31:47,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 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 12:31:47,752 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 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 12:31:47,752 INFO L175 Difference]: Start difference. First operand has 253 places, 258 transitions, 532 flow. Second operand 4 states and 1079 transitions. [2022-11-16 12:31:47,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 272 transitions, 650 flow [2022-11-16 12:31:47,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 272 transitions, 641 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:31:47,759 INFO L231 Difference]: Finished difference. Result has 254 places, 259 transitions, 547 flow [2022-11-16 12:31:47,759 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=547, PETRI_PLACES=254, PETRI_TRANSITIONS=259} [2022-11-16 12:31:47,760 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 0 predicate places. [2022-11-16 12:31:47,760 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 259 transitions, 547 flow [2022-11-16 12:31:47,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 260.75) internal successors, (1043), 4 states have internal predecessors, (1043), 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 12:31:47,761 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:31:47,761 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:31:47,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:31:47,762 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 12:31:47,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:31:47,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1223199338, now seen corresponding path program 1 times [2022-11-16 12:31:47,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:31:47,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264061436] [2022-11-16 12:31:47,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:31:47,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:31:47,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:31:47,948 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 12:31:47,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:31:47,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264061436] [2022-11-16 12:31:47,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264061436] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:31:47,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:31:47,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:31:47,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089688784] [2022-11-16 12:31:47,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:31:47,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:31:47,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:31:47,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:31:47,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:31:47,954 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 297 [2022-11-16 12:31:47,959 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 259 transitions, 547 flow. Second operand has 6 states, 6 states have (on average 254.16666666666666) internal successors, (1525), 6 states have internal predecessors, (1525), 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 12:31:47,959 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:31:47,959 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 297 [2022-11-16 12:31:47,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:31:48,691 INFO L130 PetriNetUnfolder]: 665/3194 cut-off events. [2022-11-16 12:31:48,691 INFO L131 PetriNetUnfolder]: For 267/701 co-relation queries the response was YES. [2022-11-16 12:31:48,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4159 conditions, 3194 events. 665/3194 cut-off events. For 267/701 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 29173 event pairs, 102 based on Foata normal form. 0/2449 useless extension candidates. Maximal degree in co-relation 3087. Up to 685 conditions per place. [2022-11-16 12:31:48,741 INFO L137 encePairwiseOnDemand]: 291/297 looper letters, 40 selfloop transitions, 5 changer transitions 0/269 dead transitions. [2022-11-16 12:31:48,742 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 269 transitions, 664 flow [2022-11-16 12:31:48,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:31:48,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:31:48,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1558 transitions. [2022-11-16 12:31:48,746 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8742985409652076 [2022-11-16 12:31:48,746 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1558 transitions. [2022-11-16 12:31:48,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1558 transitions. [2022-11-16 12:31:48,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:31:48,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1558 transitions. [2022-11-16 12:31:48,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 259.6666666666667) internal successors, (1558), 6 states have internal predecessors, (1558), 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 12:31:48,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 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 12:31:48,796 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 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 12:31:48,797 INFO L175 Difference]: Start difference. First operand has 254 places, 259 transitions, 547 flow. Second operand 6 states and 1558 transitions. [2022-11-16 12:31:48,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 269 transitions, 664 flow [2022-11-16 12:31:48,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 269 transitions, 664 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:31:48,802 INFO L231 Difference]: Finished difference. Result has 258 places, 258 transitions, 555 flow [2022-11-16 12:31:48,802 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=545, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=555, PETRI_PLACES=258, PETRI_TRANSITIONS=258} [2022-11-16 12:31:48,805 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 4 predicate places. [2022-11-16 12:31:48,806 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 258 transitions, 555 flow [2022-11-16 12:31:48,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 254.16666666666666) internal successors, (1525), 6 states have internal predecessors, (1525), 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 12:31:48,807 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:31:48,807 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:31:48,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:31:48,808 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 12:31:48,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:31:48,809 INFO L85 PathProgramCache]: Analyzing trace with hash 735527000, now seen corresponding path program 1 times [2022-11-16 12:31:48,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:31:48,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586138349] [2022-11-16 12:31:48,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:31:48,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:31:48,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:31:48,899 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 12:31:48,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:31:48,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586138349] [2022-11-16 12:31:48,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586138349] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:31:48,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:31:48,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:31:48,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522179414] [2022-11-16 12:31:48,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:31:48,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:31:48,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:31:48,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:31:48,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:31:48,904 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 297 [2022-11-16 12:31:48,905 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 258 transitions, 555 flow. Second operand has 4 states, 4 states have (on average 261.0) internal successors, (1044), 4 states have internal predecessors, (1044), 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 12:31:48,905 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:31:48,906 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 297 [2022-11-16 12:31:48,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:31:49,266 INFO L130 PetriNetUnfolder]: 143/991 cut-off events. [2022-11-16 12:31:49,267 INFO L131 PetriNetUnfolder]: For 104/394 co-relation queries the response was YES. [2022-11-16 12:31:49,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1355 conditions, 991 events. 143/991 cut-off events. For 104/394 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7237 event pairs, 48 based on Foata normal form. 0/817 useless extension candidates. Maximal degree in co-relation 1100. Up to 126 conditions per place. [2022-11-16 12:31:49,298 INFO L137 encePairwiseOnDemand]: 291/297 looper letters, 36 selfloop transitions, 4 changer transitions 0/271 dead transitions. [2022-11-16 12:31:49,298 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 271 transitions, 668 flow [2022-11-16 12:31:49,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:31:49,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:31:49,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1078 transitions. [2022-11-16 12:31:49,302 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9074074074074074 [2022-11-16 12:31:49,302 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1078 transitions. [2022-11-16 12:31:49,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1078 transitions. [2022-11-16 12:31:49,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:31:49,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1078 transitions. [2022-11-16 12:31:49,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 269.5) internal successors, (1078), 4 states have internal predecessors, (1078), 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 12:31:49,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 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 12:31:49,311 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 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 12:31:49,312 INFO L175 Difference]: Start difference. First operand has 258 places, 258 transitions, 555 flow. Second operand 4 states and 1078 transitions. [2022-11-16 12:31:49,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 271 transitions, 668 flow [2022-11-16 12:31:49,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 271 transitions, 659 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:31:49,318 INFO L231 Difference]: Finished difference. Result has 259 places, 259 transitions, 570 flow [2022-11-16 12:31:49,319 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=570, PETRI_PLACES=259, PETRI_TRANSITIONS=259} [2022-11-16 12:31:49,320 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 5 predicate places. [2022-11-16 12:31:49,320 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 259 transitions, 570 flow [2022-11-16 12:31:49,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 261.0) internal successors, (1044), 4 states have internal predecessors, (1044), 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 12:31:49,321 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:31:49,321 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:31:49,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:31:49,322 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 12:31:49,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:31:49,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1984407855, now seen corresponding path program 1 times [2022-11-16 12:31:49,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:31:49,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910609707] [2022-11-16 12:31:49,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:31:49,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:31:49,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:31:49,424 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 12:31:49,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:31:49,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910609707] [2022-11-16 12:31:49,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910609707] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:31:49,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:31:49,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:31:49,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946468647] [2022-11-16 12:31:49,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:31:49,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:31:49,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:31:49,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:31:49,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:31:49,433 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 297 [2022-11-16 12:31:49,434 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 259 transitions, 570 flow. Second operand has 4 states, 4 states have (on average 261.25) internal successors, (1045), 4 states have internal predecessors, (1045), 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 12:31:49,434 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:31:49,435 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 297 [2022-11-16 12:31:49,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:31:49,745 INFO L130 PetriNetUnfolder]: 88/974 cut-off events. [2022-11-16 12:31:49,746 INFO L131 PetriNetUnfolder]: For 55/113 co-relation queries the response was YES. [2022-11-16 12:31:49,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1294 conditions, 974 events. 88/974 cut-off events. For 55/113 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 6784 event pairs, 24 based on Foata normal form. 5/854 useless extension candidates. Maximal degree in co-relation 1112. Up to 72 conditions per place. [2022-11-16 12:31:49,766 INFO L137 encePairwiseOnDemand]: 293/297 looper letters, 37 selfloop transitions, 3 changer transitions 0/271 dead transitions. [2022-11-16 12:31:49,766 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 271 transitions, 678 flow [2022-11-16 12:31:49,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:31:49,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:31:49,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1077 transitions. [2022-11-16 12:31:49,770 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9065656565656566 [2022-11-16 12:31:49,770 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1077 transitions. [2022-11-16 12:31:49,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1077 transitions. [2022-11-16 12:31:49,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:31:49,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1077 transitions. [2022-11-16 12:31:49,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 269.25) internal successors, (1077), 4 states have internal predecessors, (1077), 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 12:31:49,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 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 12:31:49,777 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 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 12:31:49,778 INFO L175 Difference]: Start difference. First operand has 259 places, 259 transitions, 570 flow. Second operand 4 states and 1077 transitions. [2022-11-16 12:31:49,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 271 transitions, 678 flow [2022-11-16 12:31:49,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 271 transitions, 676 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:31:49,783 INFO L231 Difference]: Finished difference. Result has 261 places, 258 transitions, 568 flow [2022-11-16 12:31:49,784 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=568, PETRI_PLACES=261, PETRI_TRANSITIONS=258} [2022-11-16 12:31:49,784 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 7 predicate places. [2022-11-16 12:31:49,787 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 258 transitions, 568 flow [2022-11-16 12:31:49,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 261.25) internal successors, (1045), 4 states have internal predecessors, (1045), 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 12:31:49,788 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:31:49,788 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:31:49,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:31:49,788 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 12:31:49,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:31:49,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1387100597, now seen corresponding path program 1 times [2022-11-16 12:31:49,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:31:49,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236091241] [2022-11-16 12:31:49,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:31:49,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:31:49,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:31:49,955 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 12:31:49,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:31:49,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236091241] [2022-11-16 12:31:49,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236091241] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:31:49,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:31:49,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:31:49,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970491322] [2022-11-16 12:31:49,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:31:49,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:31:49,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:31:49,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:31:49,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:31:49,962 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 297 [2022-11-16 12:31:49,963 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 258 transitions, 568 flow. Second operand has 6 states, 6 states have (on average 254.33333333333334) internal successors, (1526), 6 states have internal predecessors, (1526), 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 12:31:49,964 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:31:49,964 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 297 [2022-11-16 12:31:49,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:31:50,443 INFO L130 PetriNetUnfolder]: 207/1478 cut-off events. [2022-11-16 12:31:50,443 INFO L131 PetriNetUnfolder]: For 75/324 co-relation queries the response was YES. [2022-11-16 12:31:50,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2011 conditions, 1478 events. 207/1478 cut-off events. For 75/324 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 10973 event pairs, 22 based on Foata normal form. 4/1242 useless extension candidates. Maximal degree in co-relation 1827. Up to 282 conditions per place. [2022-11-16 12:31:50,479 INFO L137 encePairwiseOnDemand]: 291/297 looper letters, 39 selfloop transitions, 5 changer transitions 0/269 dead transitions. [2022-11-16 12:31:50,479 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 269 transitions, 686 flow [2022-11-16 12:31:50,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:31:50,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:31:50,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1557 transitions. [2022-11-16 12:31:50,483 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8737373737373737 [2022-11-16 12:31:50,483 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1557 transitions. [2022-11-16 12:31:50,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1557 transitions. [2022-11-16 12:31:50,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:31:50,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1557 transitions. [2022-11-16 12:31:50,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 259.5) internal successors, (1557), 6 states have internal predecessors, (1557), 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 12:31:50,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 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 12:31:50,493 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 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 12:31:50,493 INFO L175 Difference]: Start difference. First operand has 261 places, 258 transitions, 568 flow. Second operand 6 states and 1557 transitions. [2022-11-16 12:31:50,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 269 transitions, 686 flow [2022-11-16 12:31:50,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 269 transitions, 681 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:31:50,499 INFO L231 Difference]: Finished difference. Result has 263 places, 257 transitions, 571 flow [2022-11-16 12:31:50,500 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=571, PETRI_PLACES=263, PETRI_TRANSITIONS=257} [2022-11-16 12:31:50,500 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 9 predicate places. [2022-11-16 12:31:50,501 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 257 transitions, 571 flow [2022-11-16 12:31:50,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 254.33333333333334) internal successors, (1526), 6 states have internal predecessors, (1526), 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 12:31:50,502 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:31:50,502 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:31:50,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:31:50,502 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 12:31:50,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:31:50,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1337161623, now seen corresponding path program 1 times [2022-11-16 12:31:50,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:31:50,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813726853] [2022-11-16 12:31:50,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:31:50,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:31:50,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:31:50,620 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 12:31:50,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:31:50,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813726853] [2022-11-16 12:31:50,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813726853] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:31:50,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:31:50,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:31:50,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098487241] [2022-11-16 12:31:50,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:31:50,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:31:50,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:31:50,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:31:50,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:31:50,625 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 297 [2022-11-16 12:31:50,626 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 257 transitions, 571 flow. Second operand has 6 states, 6 states have (on average 254.33333333333334) internal successors, (1526), 6 states have internal predecessors, (1526), 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 12:31:50,627 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:31:50,627 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 297 [2022-11-16 12:31:50,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:31:51,320 INFO L130 PetriNetUnfolder]: 762/3216 cut-off events. [2022-11-16 12:31:51,321 INFO L131 PetriNetUnfolder]: For 436/446 co-relation queries the response was YES. [2022-11-16 12:31:51,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4508 conditions, 3216 events. 762/3216 cut-off events. For 436/446 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 29158 event pairs, 78 based on Foata normal form. 0/2473 useless extension candidates. Maximal degree in co-relation 4293. Up to 920 conditions per place. [2022-11-16 12:31:51,368 INFO L137 encePairwiseOnDemand]: 291/297 looper letters, 39 selfloop transitions, 5 changer transitions 0/266 dead transitions. [2022-11-16 12:31:51,368 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 266 transitions, 681 flow [2022-11-16 12:31:51,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:31:51,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:31:51,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1557 transitions. [2022-11-16 12:31:51,372 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8737373737373737 [2022-11-16 12:31:51,373 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1557 transitions. [2022-11-16 12:31:51,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1557 transitions. [2022-11-16 12:31:51,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:31:51,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1557 transitions. [2022-11-16 12:31:51,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 259.5) internal successors, (1557), 6 states have internal predecessors, (1557), 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 12:31:51,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 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 12:31:51,382 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 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 12:31:51,382 INFO L175 Difference]: Start difference. First operand has 263 places, 257 transitions, 571 flow. Second operand 6 states and 1557 transitions. [2022-11-16 12:31:51,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 266 transitions, 681 flow [2022-11-16 12:31:51,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 266 transitions, 672 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:31:51,388 INFO L231 Difference]: Finished difference. Result has 263 places, 256 transitions, 570 flow [2022-11-16 12:31:51,389 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=570, PETRI_PLACES=263, PETRI_TRANSITIONS=256} [2022-11-16 12:31:51,389 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 9 predicate places. [2022-11-16 12:31:51,390 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 256 transitions, 570 flow [2022-11-16 12:31:51,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 254.33333333333334) internal successors, (1526), 6 states have internal predecessors, (1526), 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 12:31:51,391 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:31:51,391 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:31:51,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:31:51,391 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 12:31:51,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:31:51,392 INFO L85 PathProgramCache]: Analyzing trace with hash -688459218, now seen corresponding path program 1 times [2022-11-16 12:31:51,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:31:51,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824953743] [2022-11-16 12:31:51,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:31:51,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:31:51,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:31:51,499 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 12:31:51,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:31:51,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824953743] [2022-11-16 12:31:51,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824953743] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:31:51,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:31:51,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:31:51,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275687855] [2022-11-16 12:31:51,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:31:51,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:31:51,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:31:51,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:31:51,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:31:51,505 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 297 [2022-11-16 12:31:51,506 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 256 transitions, 570 flow. Second operand has 5 states, 5 states have (on average 257.6) internal successors, (1288), 5 states have internal predecessors, (1288), 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 12:31:51,507 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:31:51,507 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 297 [2022-11-16 12:31:51,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:31:51,848 INFO L130 PetriNetUnfolder]: 99/1027 cut-off events. [2022-11-16 12:31:51,848 INFO L131 PetriNetUnfolder]: For 35/107 co-relation queries the response was YES. [2022-11-16 12:31:51,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1412 conditions, 1027 events. 99/1027 cut-off events. For 35/107 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 7342 event pairs, 30 based on Foata normal form. 4/912 useless extension candidates. Maximal degree in co-relation 1230. Up to 90 conditions per place. [2022-11-16 12:31:51,876 INFO L137 encePairwiseOnDemand]: 290/297 looper letters, 44 selfloop transitions, 7 changer transitions 0/277 dead transitions. [2022-11-16 12:31:51,877 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 277 transitions, 726 flow [2022-11-16 12:31:51,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:31:51,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:31:51,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1582 transitions. [2022-11-16 12:31:51,882 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8877665544332211 [2022-11-16 12:31:51,882 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1582 transitions. [2022-11-16 12:31:51,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1582 transitions. [2022-11-16 12:31:51,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:31:51,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1582 transitions. [2022-11-16 12:31:51,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 263.6666666666667) internal successors, (1582), 6 states have internal predecessors, (1582), 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 12:31:51,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 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 12:31:51,893 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 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 12:31:51,893 INFO L175 Difference]: Start difference. First operand has 263 places, 256 transitions, 570 flow. Second operand 6 states and 1582 transitions. [2022-11-16 12:31:51,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 277 transitions, 726 flow [2022-11-16 12:31:51,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 277 transitions, 712 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-11-16 12:31:51,901 INFO L231 Difference]: Finished difference. Result has 264 places, 259 transitions, 591 flow [2022-11-16 12:31:51,902 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=591, PETRI_PLACES=264, PETRI_TRANSITIONS=259} [2022-11-16 12:31:51,902 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 10 predicate places. [2022-11-16 12:31:51,903 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 259 transitions, 591 flow [2022-11-16 12:31:51,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 257.6) internal successors, (1288), 5 states have internal predecessors, (1288), 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 12:31:51,904 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:31:51,904 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:31:51,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:31:51,904 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 12:31:51,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:31:51,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1497661766, now seen corresponding path program 1 times [2022-11-16 12:31:51,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:31:51,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137098382] [2022-11-16 12:31:51,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:31:51,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:31:51,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:31:51,974 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 12:31:51,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:31:51,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137098382] [2022-11-16 12:31:51,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137098382] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:31:51,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:31:51,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:31:51,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180436631] [2022-11-16 12:31:51,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:31:51,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:31:51,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:31:51,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:31:51,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:31:51,978 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 297 [2022-11-16 12:31:51,979 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 259 transitions, 591 flow. Second operand has 4 states, 4 states have (on average 261.25) internal successors, (1045), 4 states have internal predecessors, (1045), 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 12:31:51,980 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:31:51,980 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 297 [2022-11-16 12:31:51,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:31:52,466 INFO L130 PetriNetUnfolder]: 371/1844 cut-off events. [2022-11-16 12:31:52,467 INFO L131 PetriNetUnfolder]: For 358/618 co-relation queries the response was YES. [2022-11-16 12:31:52,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2646 conditions, 1844 events. 371/1844 cut-off events. For 358/618 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 17860 event pairs, 144 based on Foata normal form. 0/1425 useless extension candidates. Maximal degree in co-relation 2575. Up to 338 conditions per place. [2022-11-16 12:31:52,493 INFO L137 encePairwiseOnDemand]: 291/297 looper letters, 35 selfloop transitions, 4 changer transitions 0/271 dead transitions. [2022-11-16 12:31:52,494 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 271 transitions, 697 flow [2022-11-16 12:31:52,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:31:52,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:31:52,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1077 transitions. [2022-11-16 12:31:52,497 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9065656565656566 [2022-11-16 12:31:52,497 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1077 transitions. [2022-11-16 12:31:52,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1077 transitions. [2022-11-16 12:31:52,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:31:52,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1077 transitions. [2022-11-16 12:31:52,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 269.25) internal successors, (1077), 4 states have internal predecessors, (1077), 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 12:31:52,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 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 12:31:52,504 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 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 12:31:52,504 INFO L175 Difference]: Start difference. First operand has 264 places, 259 transitions, 591 flow. Second operand 4 states and 1077 transitions. [2022-11-16 12:31:52,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 271 transitions, 697 flow [2022-11-16 12:31:52,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 271 transitions, 694 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:31:52,510 INFO L231 Difference]: Finished difference. Result has 268 places, 260 transitions, 612 flow [2022-11-16 12:31:52,510 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=612, PETRI_PLACES=268, PETRI_TRANSITIONS=260} [2022-11-16 12:31:52,511 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 14 predicate places. [2022-11-16 12:31:52,511 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 260 transitions, 612 flow [2022-11-16 12:31:52,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 261.25) internal successors, (1045), 4 states have internal predecessors, (1045), 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 12:31:52,513 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:31:52,513 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:31:52,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:31:52,513 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 12:31:52,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:31:52,514 INFO L85 PathProgramCache]: Analyzing trace with hash -16617281, now seen corresponding path program 1 times [2022-11-16 12:31:52,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:31:52,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492537281] [2022-11-16 12:31:52,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:31:52,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:31:52,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:31:52,574 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 12:31:52,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:31:52,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492537281] [2022-11-16 12:31:52,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492537281] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:31:52,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:31:52,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:31:52,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007573338] [2022-11-16 12:31:52,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:31:52,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:31:52,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:31:52,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:31:52,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:31:52,578 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 297 [2022-11-16 12:31:52,579 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 260 transitions, 612 flow. Second operand has 4 states, 4 states have (on average 261.5) internal successors, (1046), 4 states have internal predecessors, (1046), 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 12:31:52,580 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:31:52,580 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 297 [2022-11-16 12:31:52,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:31:52,933 INFO L130 PetriNetUnfolder]: 134/1125 cut-off events. [2022-11-16 12:31:52,933 INFO L131 PetriNetUnfolder]: For 168/458 co-relation queries the response was YES. [2022-11-16 12:31:52,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1577 conditions, 1125 events. 134/1125 cut-off events. For 168/458 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 8766 event pairs, 48 based on Foata normal form. 5/965 useless extension candidates. Maximal degree in co-relation 1403. Up to 121 conditions per place. [2022-11-16 12:31:52,976 INFO L137 encePairwiseOnDemand]: 293/297 looper letters, 36 selfloop transitions, 3 changer transitions 0/271 dead transitions. [2022-11-16 12:31:52,977 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 271 transitions, 715 flow [2022-11-16 12:31:52,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:31:52,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:31:52,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1076 transitions. [2022-11-16 12:31:52,980 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9057239057239057 [2022-11-16 12:31:52,980 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1076 transitions. [2022-11-16 12:31:52,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1076 transitions. [2022-11-16 12:31:52,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:31:52,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1076 transitions. [2022-11-16 12:31:52,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 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 12:31:52,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 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 12:31:52,987 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 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 12:31:52,987 INFO L175 Difference]: Start difference. First operand has 268 places, 260 transitions, 612 flow. Second operand 4 states and 1076 transitions. [2022-11-16 12:31:52,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 271 transitions, 715 flow [2022-11-16 12:31:52,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 271 transitions, 713 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:31:52,995 INFO L231 Difference]: Finished difference. Result has 270 places, 259 transitions, 610 flow [2022-11-16 12:31:52,996 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=610, PETRI_PLACES=270, PETRI_TRANSITIONS=259} [2022-11-16 12:31:52,997 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 16 predicate places. [2022-11-16 12:31:52,998 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 259 transitions, 610 flow [2022-11-16 12:31:52,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 261.5) internal successors, (1046), 4 states have internal predecessors, (1046), 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 12:31:52,998 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:31:52,999 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:31:52,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:31:52,999 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 12:31:53,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:31:53,000 INFO L85 PathProgramCache]: Analyzing trace with hash -515134880, now seen corresponding path program 1 times [2022-11-16 12:31:53,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:31:53,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765461425] [2022-11-16 12:31:53,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:31:53,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:31:53,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:31:53,095 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 12:31:53,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:31:53,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765461425] [2022-11-16 12:31:53,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765461425] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:31:53,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:31:53,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:31:53,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551015457] [2022-11-16 12:31:53,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:31:53,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:31:53,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:31:53,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:31:53,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:31:53,100 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 297 [2022-11-16 12:31:53,101 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 259 transitions, 610 flow. Second operand has 6 states, 6 states have (on average 254.5) internal successors, (1527), 6 states have internal predecessors, (1527), 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 12:31:53,101 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:31:53,102 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 297 [2022-11-16 12:31:53,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:31:54,056 INFO L130 PetriNetUnfolder]: 726/4156 cut-off events. [2022-11-16 12:31:54,056 INFO L131 PetriNetUnfolder]: For 454/506 co-relation queries the response was YES. [2022-11-16 12:31:54,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5746 conditions, 4156 events. 726/4156 cut-off events. For 454/506 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 41713 event pairs, 68 based on Foata normal form. 0/3422 useless extension candidates. Maximal degree in co-relation 5426. Up to 899 conditions per place. [2022-11-16 12:31:54,116 INFO L137 encePairwiseOnDemand]: 291/297 looper letters, 38 selfloop transitions, 5 changer transitions 0/269 dead transitions. [2022-11-16 12:31:54,116 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 269 transitions, 723 flow [2022-11-16 12:31:54,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:31:54,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:31:54,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1556 transitions. [2022-11-16 12:31:54,120 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8731762065095399 [2022-11-16 12:31:54,120 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1556 transitions. [2022-11-16 12:31:54,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1556 transitions. [2022-11-16 12:31:54,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:31:54,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1556 transitions. [2022-11-16 12:31:54,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 259.3333333333333) internal successors, (1556), 6 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:31:54,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 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 12:31:54,129 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 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 12:31:54,129 INFO L175 Difference]: Start difference. First operand has 270 places, 259 transitions, 610 flow. Second operand 6 states and 1556 transitions. [2022-11-16 12:31:54,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 269 transitions, 723 flow [2022-11-16 12:31:54,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 269 transitions, 718 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:31:54,136 INFO L231 Difference]: Finished difference. Result has 272 places, 258 transitions, 613 flow [2022-11-16 12:31:54,137 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=603, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=613, PETRI_PLACES=272, PETRI_TRANSITIONS=258} [2022-11-16 12:31:54,137 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 18 predicate places. [2022-11-16 12:31:54,137 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 258 transitions, 613 flow [2022-11-16 12:31:54,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 254.5) internal successors, (1527), 6 states have internal predecessors, (1527), 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 12:31:54,138 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:31:54,138 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:31:54,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:31:54,139 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 12:31:54,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:31:54,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1635983760, now seen corresponding path program 1 times [2022-11-16 12:31:54,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:31:54,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030434917] [2022-11-16 12:31:54,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:31:54,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:31:54,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:31:54,261 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 12:31:54,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:31:54,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030434917] [2022-11-16 12:31:54,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030434917] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:31:54,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:31:54,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:31:54,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075467691] [2022-11-16 12:31:54,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:31:54,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:31:54,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:31:54,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:31:54,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:31:54,266 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 297 [2022-11-16 12:31:54,268 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 258 transitions, 613 flow. Second operand has 8 states, 8 states have (on average 249.125) internal successors, (1993), 8 states have internal predecessors, (1993), 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 12:31:54,268 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:31:54,268 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 297 [2022-11-16 12:31:54,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:31:55,068 INFO L130 PetriNetUnfolder]: 447/3165 cut-off events. [2022-11-16 12:31:55,068 INFO L131 PetriNetUnfolder]: For 243/243 co-relation queries the response was YES. [2022-11-16 12:31:55,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4657 conditions, 3165 events. 447/3165 cut-off events. For 243/243 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 30456 event pairs, 32 based on Foata normal form. 0/2778 useless extension candidates. Maximal degree in co-relation 4283. Up to 309 conditions per place. [2022-11-16 12:31:55,134 INFO L137 encePairwiseOnDemand]: 287/297 looper letters, 53 selfloop transitions, 11 changer transitions 0/282 dead transitions. [2022-11-16 12:31:55,135 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 282 transitions, 811 flow [2022-11-16 12:31:55,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:31:55,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 12:31:55,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2038 transitions. [2022-11-16 12:31:55,140 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8577441077441077 [2022-11-16 12:31:55,140 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2038 transitions. [2022-11-16 12:31:55,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2038 transitions. [2022-11-16 12:31:55,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:31:55,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2038 transitions. [2022-11-16 12:31:55,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 254.75) internal successors, (2038), 8 states have internal predecessors, (2038), 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 12:31:55,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 297.0) internal successors, (2673), 9 states have internal predecessors, (2673), 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 12:31:55,150 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 297.0) internal successors, (2673), 9 states have internal predecessors, (2673), 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 12:31:55,151 INFO L175 Difference]: Start difference. First operand has 272 places, 258 transitions, 613 flow. Second operand 8 states and 2038 transitions. [2022-11-16 12:31:55,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 282 transitions, 811 flow [2022-11-16 12:31:55,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 282 transitions, 794 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:31:55,158 INFO L231 Difference]: Finished difference. Result has 277 places, 259 transitions, 640 flow [2022-11-16 12:31:55,159 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=640, PETRI_PLACES=277, PETRI_TRANSITIONS=259} [2022-11-16 12:31:55,161 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 23 predicate places. [2022-11-16 12:31:55,161 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 259 transitions, 640 flow [2022-11-16 12:31:55,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 249.125) internal successors, (1993), 8 states have internal predecessors, (1993), 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 12:31:55,162 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:31:55,162 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:31:55,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 12:31:55,163 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 12:31:55,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:31:55,163 INFO L85 PathProgramCache]: Analyzing trace with hash -824110216, now seen corresponding path program 1 times [2022-11-16 12:31:55,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:31:55,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667541123] [2022-11-16 12:31:55,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:31:55,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:31:55,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:31:55,310 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 12:31:55,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:31:55,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667541123] [2022-11-16 12:31:55,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667541123] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:31:55,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:31:55,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:31:55,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147206716] [2022-11-16 12:31:55,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:31:55,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:31:55,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:31:55,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:31:55,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:31:55,314 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 297 [2022-11-16 12:31:55,316 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 259 transitions, 640 flow. Second operand has 8 states, 8 states have (on average 249.25) internal successors, (1994), 8 states have internal predecessors, (1994), 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 12:31:55,316 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:31:55,316 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 297 [2022-11-16 12:31:55,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:31:56,078 INFO L130 PetriNetUnfolder]: 371/2212 cut-off events. [2022-11-16 12:31:56,079 INFO L131 PetriNetUnfolder]: For 231/231 co-relation queries the response was YES. [2022-11-16 12:31:56,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3549 conditions, 2212 events. 371/2212 cut-off events. For 231/231 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 18993 event pairs, 28 based on Foata normal form. 0/1963 useless extension candidates. Maximal degree in co-relation 3481. Up to 289 conditions per place. [2022-11-16 12:31:56,138 INFO L137 encePairwiseOnDemand]: 287/297 looper letters, 55 selfloop transitions, 9 changer transitions 0/284 dead transitions. [2022-11-16 12:31:56,138 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 284 transitions, 834 flow [2022-11-16 12:31:56,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:31:56,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 12:31:56,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2040 transitions. [2022-11-16 12:31:56,144 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8585858585858586 [2022-11-16 12:31:56,144 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2040 transitions. [2022-11-16 12:31:56,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2040 transitions. [2022-11-16 12:31:56,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:31:56,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2040 transitions. [2022-11-16 12:31:56,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 255.0) internal successors, (2040), 8 states have internal predecessors, (2040), 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 12:31:56,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 297.0) internal successors, (2673), 9 states have internal predecessors, (2673), 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 12:31:56,155 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 297.0) internal successors, (2673), 9 states have internal predecessors, (2673), 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 12:31:56,155 INFO L175 Difference]: Start difference. First operand has 277 places, 259 transitions, 640 flow. Second operand 8 states and 2040 transitions. [2022-11-16 12:31:56,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 284 transitions, 834 flow [2022-11-16 12:31:56,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 284 transitions, 825 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:31:56,163 INFO L231 Difference]: Finished difference. Result has 282 places, 260 transitions, 661 flow [2022-11-16 12:31:56,164 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=631, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=661, PETRI_PLACES=282, PETRI_TRANSITIONS=260} [2022-11-16 12:31:56,165 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 28 predicate places. [2022-11-16 12:31:56,165 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 260 transitions, 661 flow [2022-11-16 12:31:56,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 249.25) internal successors, (1994), 8 states have internal predecessors, (1994), 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 12:31:56,166 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:31:56,166 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:31:56,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 12:31:56,166 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 12:31:56,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:31:56,167 INFO L85 PathProgramCache]: Analyzing trace with hash -248025757, now seen corresponding path program 1 times [2022-11-16 12:31:56,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:31:56,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152382089] [2022-11-16 12:31:56,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:31:56,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:31:56,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:31:56,266 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 12:31:56,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:31:56,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152382089] [2022-11-16 12:31:56,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152382089] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:31:56,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:31:56,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:31:56,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10161654] [2022-11-16 12:31:56,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:31:56,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:31:56,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:31:56,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:31:56,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:31:56,272 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 297 [2022-11-16 12:31:56,273 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 260 transitions, 661 flow. Second operand has 5 states, 5 states have (on average 257.8) internal successors, (1289), 5 states have internal predecessors, (1289), 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 12:31:56,273 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:31:56,273 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 297 [2022-11-16 12:31:56,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:31:56,777 INFO L130 PetriNetUnfolder]: 162/1177 cut-off events. [2022-11-16 12:31:56,777 INFO L131 PetriNetUnfolder]: For 172/532 co-relation queries the response was YES. [2022-11-16 12:31:56,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1736 conditions, 1177 events. 162/1177 cut-off events. For 172/532 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 9626 event pairs, 60 based on Foata normal form. 0/1011 useless extension candidates. Maximal degree in co-relation 1558. Up to 153 conditions per place. [2022-11-16 12:31:56,823 INFO L137 encePairwiseOnDemand]: 290/297 looper letters, 43 selfloop transitions, 7 changer transitions 0/280 dead transitions. [2022-11-16 12:31:56,823 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 280 transitions, 812 flow [2022-11-16 12:31:56,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:31:56,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:31:56,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1581 transitions. [2022-11-16 12:31:56,827 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8872053872053872 [2022-11-16 12:31:56,827 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1581 transitions. [2022-11-16 12:31:56,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1581 transitions. [2022-11-16 12:31:56,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:31:56,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1581 transitions. [2022-11-16 12:31:56,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 263.5) internal successors, (1581), 6 states have internal predecessors, (1581), 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 12:31:56,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 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 12:31:56,835 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 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 12:31:56,835 INFO L175 Difference]: Start difference. First operand has 282 places, 260 transitions, 661 flow. Second operand 6 states and 1581 transitions. [2022-11-16 12:31:56,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 280 transitions, 812 flow [2022-11-16 12:31:56,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 280 transitions, 798 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-11-16 12:31:56,841 INFO L231 Difference]: Finished difference. Result has 283 places, 263 transitions, 682 flow [2022-11-16 12:31:56,841 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=643, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=682, PETRI_PLACES=283, PETRI_TRANSITIONS=263} [2022-11-16 12:31:56,842 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 29 predicate places. [2022-11-16 12:31:56,842 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 263 transitions, 682 flow [2022-11-16 12:31:56,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 257.8) internal successors, (1289), 5 states have internal predecessors, (1289), 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 12:31:56,843 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:31:56,843 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:31:56,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 12:31:56,843 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 12:31:56,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:31:56,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1922962820, now seen corresponding path program 1 times [2022-11-16 12:31:56,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:31:56,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78081977] [2022-11-16 12:31:56,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:31:56,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:31:56,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:31:56,994 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 12:31:56,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:31:56,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78081977] [2022-11-16 12:31:56,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78081977] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:31:56,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:31:56,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:31:56,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838729619] [2022-11-16 12:31:56,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:31:56,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:31:56,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:31:56,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:31:56,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:31:56,998 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 297 [2022-11-16 12:31:56,999 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 263 transitions, 682 flow. Second operand has 6 states, 6 states have (on average 252.33333333333334) internal successors, (1514), 6 states have internal predecessors, (1514), 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 12:31:57,000 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:31:57,002 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 297 [2022-11-16 12:31:57,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:31:57,384 INFO L130 PetriNetUnfolder]: 119/944 cut-off events. [2022-11-16 12:31:57,384 INFO L131 PetriNetUnfolder]: For 132/136 co-relation queries the response was YES. [2022-11-16 12:31:57,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1582 conditions, 944 events. 119/944 cut-off events. For 132/136 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 6636 event pairs, 58 based on Foata normal form. 3/869 useless extension candidates. Maximal degree in co-relation 1459. Up to 153 conditions per place. [2022-11-16 12:31:57,412 INFO L137 encePairwiseOnDemand]: 289/297 looper letters, 49 selfloop transitions, 7 changer transitions 0/279 dead transitions. [2022-11-16 12:31:57,412 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 279 transitions, 841 flow [2022-11-16 12:31:57,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:31:57,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:31:57,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1796 transitions. [2022-11-16 12:31:57,416 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8638768638768639 [2022-11-16 12:31:57,417 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1796 transitions. [2022-11-16 12:31:57,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1796 transitions. [2022-11-16 12:31:57,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:31:57,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1796 transitions. [2022-11-16 12:31:57,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 256.57142857142856) internal successors, (1796), 7 states have internal predecessors, (1796), 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 12:31:57,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 297.0) internal successors, (2376), 8 states have internal predecessors, (2376), 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 12:31:57,426 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 297.0) internal successors, (2376), 8 states have internal predecessors, (2376), 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 12:31:57,426 INFO L175 Difference]: Start difference. First operand has 283 places, 263 transitions, 682 flow. Second operand 7 states and 1796 transitions. [2022-11-16 12:31:57,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 279 transitions, 841 flow [2022-11-16 12:31:57,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 279 transitions, 835 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:31:57,432 INFO L231 Difference]: Finished difference. Result has 290 places, 266 transitions, 712 flow [2022-11-16 12:31:57,433 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=672, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=712, PETRI_PLACES=290, PETRI_TRANSITIONS=266} [2022-11-16 12:31:57,433 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 36 predicate places. [2022-11-16 12:31:57,433 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 266 transitions, 712 flow [2022-11-16 12:31:57,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 252.33333333333334) internal successors, (1514), 6 states have internal predecessors, (1514), 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 12:31:57,434 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:31:57,434 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:31:57,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 12:31:57,435 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 12:31:57,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:31:57,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1244725717, now seen corresponding path program 1 times [2022-11-16 12:31:57,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:31:57,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458119629] [2022-11-16 12:31:57,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:31:57,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:31:57,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:31:57,574 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 12:31:57,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:31:57,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458119629] [2022-11-16 12:31:57,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458119629] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:31:57,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:31:57,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:31:57,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680671970] [2022-11-16 12:31:57,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:31:57,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:31:57,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:31:57,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:31:57,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:31:57,580 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 297 [2022-11-16 12:31:57,582 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 266 transitions, 712 flow. Second operand has 6 states, 6 states have (on average 252.5) internal successors, (1515), 6 states have internal predecessors, (1515), 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 12:31:57,582 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:31:57,582 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 297 [2022-11-16 12:31:57,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:31:57,956 INFO L130 PetriNetUnfolder]: 113/935 cut-off events. [2022-11-16 12:31:57,956 INFO L131 PetriNetUnfolder]: For 146/150 co-relation queries the response was YES. [2022-11-16 12:31:57,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1628 conditions, 935 events. 113/935 cut-off events. For 146/150 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 6545 event pairs, 46 based on Foata normal form. 3/874 useless extension candidates. Maximal degree in co-relation 1502. Up to 126 conditions per place. [2022-11-16 12:31:57,985 INFO L137 encePairwiseOnDemand]: 289/297 looper letters, 55 selfloop transitions, 8 changer transitions 0/288 dead transitions. [2022-11-16 12:31:57,985 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 288 transitions, 914 flow [2022-11-16 12:31:57,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:31:57,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:31:57,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1802 transitions. [2022-11-16 12:31:57,989 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8667628667628667 [2022-11-16 12:31:57,989 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1802 transitions. [2022-11-16 12:31:57,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1802 transitions. [2022-11-16 12:31:57,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:31:57,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1802 transitions. [2022-11-16 12:31:57,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 257.42857142857144) internal successors, (1802), 7 states have internal predecessors, (1802), 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 12:31:57,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 297.0) internal successors, (2376), 8 states have internal predecessors, (2376), 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 12:31:57,998 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 297.0) internal successors, (2376), 8 states have internal predecessors, (2376), 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 12:31:57,999 INFO L175 Difference]: Start difference. First operand has 290 places, 266 transitions, 712 flow. Second operand 7 states and 1802 transitions. [2022-11-16 12:31:57,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 288 transitions, 914 flow [2022-11-16 12:31:58,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 288 transitions, 912 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:31:58,006 INFO L231 Difference]: Finished difference. Result has 298 places, 270 transitions, 759 flow [2022-11-16 12:31:58,007 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=706, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=759, PETRI_PLACES=298, PETRI_TRANSITIONS=270} [2022-11-16 12:31:58,007 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 44 predicate places. [2022-11-16 12:31:58,008 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 270 transitions, 759 flow [2022-11-16 12:31:58,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 252.5) internal successors, (1515), 6 states have internal predecessors, (1515), 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 12:31:58,010 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:31:58,010 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:31:58,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 12:31:58,011 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 12:31:58,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:31:58,011 INFO L85 PathProgramCache]: Analyzing trace with hash 693092001, now seen corresponding path program 1 times [2022-11-16 12:31:58,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:31:58,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337046655] [2022-11-16 12:31:58,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:31:58,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:31:58,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:31:58,075 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 12:31:58,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:31:58,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337046655] [2022-11-16 12:31:58,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337046655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:31:58,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:31:58,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:31:58,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365171310] [2022-11-16 12:31:58,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:31:58,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:31:58,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:31:58,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:31:58,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:31:58,081 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 297 [2022-11-16 12:31:58,082 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 270 transitions, 759 flow. Second operand has 4 states, 4 states have (on average 261.75) internal successors, (1047), 4 states have internal predecessors, (1047), 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 12:31:58,082 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:31:58,082 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 297 [2022-11-16 12:31:58,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:31:58,547 INFO L130 PetriNetUnfolder]: 357/1832 cut-off events. [2022-11-16 12:31:58,547 INFO L131 PetriNetUnfolder]: For 526/786 co-relation queries the response was YES. [2022-11-16 12:31:58,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2829 conditions, 1832 events. 357/1832 cut-off events. For 526/786 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 17624 event pairs, 144 based on Foata normal form. 13/1463 useless extension candidates. Maximal degree in co-relation 2744. Up to 316 conditions per place. [2022-11-16 12:31:58,629 INFO L137 encePairwiseOnDemand]: 293/297 looper letters, 35 selfloop transitions, 3 changer transitions 0/280 dead transitions. [2022-11-16 12:31:58,630 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 280 transitions, 855 flow [2022-11-16 12:31:58,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:31:58,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:31:58,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1075 transitions. [2022-11-16 12:31:58,633 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9048821548821548 [2022-11-16 12:31:58,633 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1075 transitions. [2022-11-16 12:31:58,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1075 transitions. [2022-11-16 12:31:58,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:31:58,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1075 transitions. [2022-11-16 12:31:58,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 268.75) internal successors, (1075), 4 states have internal predecessors, (1075), 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 12:31:58,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 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 12:31:58,639 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 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 12:31:58,639 INFO L175 Difference]: Start difference. First operand has 298 places, 270 transitions, 759 flow. Second operand 4 states and 1075 transitions. [2022-11-16 12:31:58,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 280 transitions, 855 flow [2022-11-16 12:31:58,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 280 transitions, 853 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:31:58,646 INFO L231 Difference]: Finished difference. Result has 300 places, 269 transitions, 757 flow [2022-11-16 12:31:58,647 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=751, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=757, PETRI_PLACES=300, PETRI_TRANSITIONS=269} [2022-11-16 12:31:58,647 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 46 predicate places. [2022-11-16 12:31:58,647 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 269 transitions, 757 flow [2022-11-16 12:31:58,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 261.75) internal successors, (1047), 4 states have internal predecessors, (1047), 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 12:31:58,648 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:31:58,648 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:31:58,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 12:31:58,648 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 12:31:58,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:31:58,649 INFO L85 PathProgramCache]: Analyzing trace with hash 605582085, now seen corresponding path program 1 times [2022-11-16 12:31:58,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:31:58,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436948988] [2022-11-16 12:31:58,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:31:58,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:31:58,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:31:58,819 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 12:31:58,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:31:58,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436948988] [2022-11-16 12:31:58,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436948988] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:31:58,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:31:58,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:31:58,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217591211] [2022-11-16 12:31:58,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:31:58,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:31:58,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:31:58,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:31:58,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:31:58,823 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 297 [2022-11-16 12:31:58,825 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 269 transitions, 757 flow. Second operand has 8 states, 8 states have (on average 249.25) internal successors, (1994), 8 states have internal predecessors, (1994), 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 12:31:58,825 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:31:58,825 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 297 [2022-11-16 12:31:58,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:31:59,614 INFO L130 PetriNetUnfolder]: 480/2225 cut-off events. [2022-11-16 12:31:59,614 INFO L131 PetriNetUnfolder]: For 361/361 co-relation queries the response was YES. [2022-11-16 12:31:59,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3887 conditions, 2225 events. 480/2225 cut-off events. For 361/361 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 18595 event pairs, 32 based on Foata normal form. 0/1939 useless extension candidates. Maximal degree in co-relation 3812. Up to 353 conditions per place. [2022-11-16 12:31:59,686 INFO L137 encePairwiseOnDemand]: 287/297 looper letters, 52 selfloop transitions, 11 changer transitions 0/292 dead transitions. [2022-11-16 12:31:59,686 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 292 transitions, 942 flow [2022-11-16 12:31:59,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:31:59,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 12:31:59,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2037 transitions. [2022-11-16 12:31:59,692 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8573232323232324 [2022-11-16 12:31:59,693 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2037 transitions. [2022-11-16 12:31:59,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2037 transitions. [2022-11-16 12:31:59,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:31:59,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2037 transitions. [2022-11-16 12:31:59,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 254.625) internal successors, (2037), 8 states have internal predecessors, (2037), 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 12:31:59,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 297.0) internal successors, (2673), 9 states have internal predecessors, (2673), 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 12:31:59,704 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 297.0) internal successors, (2673), 9 states have internal predecessors, (2673), 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 12:31:59,704 INFO L175 Difference]: Start difference. First operand has 300 places, 269 transitions, 757 flow. Second operand 8 states and 2037 transitions. [2022-11-16 12:31:59,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 292 transitions, 942 flow [2022-11-16 12:31:59,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 292 transitions, 937 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:31:59,712 INFO L231 Difference]: Finished difference. Result has 307 places, 270 transitions, 788 flow [2022-11-16 12:31:59,713 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=752, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=788, PETRI_PLACES=307, PETRI_TRANSITIONS=270} [2022-11-16 12:31:59,714 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 53 predicate places. [2022-11-16 12:31:59,714 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 270 transitions, 788 flow [2022-11-16 12:31:59,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 249.25) internal successors, (1994), 8 states have internal predecessors, (1994), 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 12:31:59,715 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:31:59,715 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:31:59,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 12:31:59,715 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 12:31:59,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:31:59,716 INFO L85 PathProgramCache]: Analyzing trace with hash 11016449, now seen corresponding path program 1 times [2022-11-16 12:31:59,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:31:59,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708164162] [2022-11-16 12:31:59,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:31:59,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:31:59,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:31:59,808 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 12:31:59,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:31:59,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708164162] [2022-11-16 12:31:59,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708164162] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:31:59,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:31:59,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:31:59,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811057989] [2022-11-16 12:31:59,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:31:59,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:31:59,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:31:59,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:31:59,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:31:59,813 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 297 [2022-11-16 12:31:59,814 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 270 transitions, 788 flow. Second operand has 6 states, 6 states have (on average 254.66666666666666) internal successors, (1528), 6 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:31:59,814 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:31:59,814 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 297 [2022-11-16 12:31:59,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:32:00,836 INFO L130 PetriNetUnfolder]: 897/4288 cut-off events. [2022-11-16 12:32:00,836 INFO L131 PetriNetUnfolder]: For 806/816 co-relation queries the response was YES. [2022-11-16 12:32:00,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6406 conditions, 4288 events. 897/4288 cut-off events. For 806/816 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 41627 event pairs, 87 based on Foata normal form. 0/3460 useless extension candidates. Maximal degree in co-relation 6146. Up to 1185 conditions per place. [2022-11-16 12:32:00,921 INFO L137 encePairwiseOnDemand]: 291/297 looper letters, 37 selfloop transitions, 5 changer transitions 0/279 dead transitions. [2022-11-16 12:32:00,921 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 279 transitions, 898 flow [2022-11-16 12:32:00,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:32:00,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:32:00,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1555 transitions. [2022-11-16 12:32:00,924 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8726150392817059 [2022-11-16 12:32:00,924 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1555 transitions. [2022-11-16 12:32:00,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1555 transitions. [2022-11-16 12:32:00,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:32:00,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1555 transitions. [2022-11-16 12:32:00,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 259.1666666666667) internal successors, (1555), 6 states have internal predecessors, (1555), 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 12:32:00,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 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 12:32:00,931 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 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 12:32:00,932 INFO L175 Difference]: Start difference. First operand has 307 places, 270 transitions, 788 flow. Second operand 6 states and 1555 transitions. [2022-11-16 12:32:00,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 279 transitions, 898 flow [2022-11-16 12:32:00,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 279 transitions, 885 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:32:00,940 INFO L231 Difference]: Finished difference. Result has 307 places, 269 transitions, 787 flow [2022-11-16 12:32:00,941 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=777, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=787, PETRI_PLACES=307, PETRI_TRANSITIONS=269} [2022-11-16 12:32:00,941 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 53 predicate places. [2022-11-16 12:32:00,942 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 269 transitions, 787 flow [2022-11-16 12:32:00,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 254.66666666666666) internal successors, (1528), 6 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:00,942 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:32:00,943 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, 1, 1, 1, 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 12:32:00,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 12:32:00,943 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 12:32:00,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:32:00,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1593176294, now seen corresponding path program 1 times [2022-11-16 12:32:00,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:32:00,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903469061] [2022-11-16 12:32:00,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:00,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:32:00,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:32:01,081 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 12:32:01,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:32:01,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903469061] [2022-11-16 12:32:01,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903469061] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:32:01,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:32:01,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:32:01,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506682145] [2022-11-16 12:32:01,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:32:01,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:32:01,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:32:01,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:32:01,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:32:01,086 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 297 [2022-11-16 12:32:01,087 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 269 transitions, 787 flow. Second operand has 8 states, 8 states have (on average 249.375) internal successors, (1995), 8 states have internal predecessors, (1995), 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 12:32:01,088 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:32:01,088 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 297 [2022-11-16 12:32:01,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:32:01,916 INFO L130 PetriNetUnfolder]: 428/2161 cut-off events. [2022-11-16 12:32:01,916 INFO L131 PetriNetUnfolder]: For 425/425 co-relation queries the response was YES. [2022-11-16 12:32:01,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3843 conditions, 2161 events. 428/2161 cut-off events. For 425/425 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 17830 event pairs, 32 based on Foata normal form. 0/1914 useless extension candidates. Maximal degree in co-relation 3768. Up to 329 conditions per place. [2022-11-16 12:32:01,960 INFO L137 encePairwiseOnDemand]: 287/297 looper letters, 54 selfloop transitions, 9 changer transitions 0/293 dead transitions. [2022-11-16 12:32:01,960 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 293 transitions, 976 flow [2022-11-16 12:32:01,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:32:01,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 12:32:01,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2039 transitions. [2022-11-16 12:32:01,965 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8581649831649831 [2022-11-16 12:32:01,965 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2039 transitions. [2022-11-16 12:32:01,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2039 transitions. [2022-11-16 12:32:01,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:32:01,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2039 transitions. [2022-11-16 12:32:01,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 254.875) internal successors, (2039), 8 states have internal predecessors, (2039), 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 12:32:01,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 297.0) internal successors, (2673), 9 states have internal predecessors, (2673), 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 12:32:01,976 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 297.0) internal successors, (2673), 9 states have internal predecessors, (2673), 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 12:32:01,976 INFO L175 Difference]: Start difference. First operand has 307 places, 269 transitions, 787 flow. Second operand 8 states and 2039 transitions. [2022-11-16 12:32:01,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 293 transitions, 976 flow [2022-11-16 12:32:01,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 293 transitions, 967 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:32:01,987 INFO L231 Difference]: Finished difference. Result has 312 places, 270 transitions, 808 flow [2022-11-16 12:32:01,987 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=778, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=808, PETRI_PLACES=312, PETRI_TRANSITIONS=270} [2022-11-16 12:32:01,988 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 58 predicate places. [2022-11-16 12:32:01,988 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 270 transitions, 808 flow [2022-11-16 12:32:01,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 249.375) internal successors, (1995), 8 states have internal predecessors, (1995), 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 12:32:01,989 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:32:01,989 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:32:01,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-16 12:32:01,990 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 12:32:01,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:32:01,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1422737372, now seen corresponding path program 1 times [2022-11-16 12:32:01,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:32:01,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696593380] [2022-11-16 12:32:01,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:01,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:32:02,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:32:02,070 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 12:32:02,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:32:02,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696593380] [2022-11-16 12:32:02,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696593380] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:32:02,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:32:02,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:32:02,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313394845] [2022-11-16 12:32:02,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:32:02,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:32:02,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:32:02,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:32:02,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:32:02,074 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 297 [2022-11-16 12:32:02,076 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 270 transitions, 808 flow. Second operand has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 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 12:32:02,076 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:32:02,076 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 297 [2022-11-16 12:32:02,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:32:02,692 INFO L130 PetriNetUnfolder]: 440/2239 cut-off events. [2022-11-16 12:32:02,692 INFO L131 PetriNetUnfolder]: For 518/824 co-relation queries the response was YES. [2022-11-16 12:32:02,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3453 conditions, 2239 events. 440/2239 cut-off events. For 518/824 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 23020 event pairs, 216 based on Foata normal form. 13/1784 useless extension candidates. Maximal degree in co-relation 3361. Up to 466 conditions per place. [2022-11-16 12:32:02,723 INFO L137 encePairwiseOnDemand]: 293/297 looper letters, 32 selfloop transitions, 3 changer transitions 0/280 dead transitions. [2022-11-16 12:32:02,724 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 280 transitions, 900 flow [2022-11-16 12:32:02,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:32:02,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:32:02,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1072 transitions. [2022-11-16 12:32:02,726 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9023569023569024 [2022-11-16 12:32:02,726 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1072 transitions. [2022-11-16 12:32:02,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1072 transitions. [2022-11-16 12:32:02,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:32:02,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1072 transitions. [2022-11-16 12:32:02,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 268.0) internal successors, (1072), 4 states have internal predecessors, (1072), 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 12:32:02,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 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 12:32:02,731 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 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 12:32:02,732 INFO L175 Difference]: Start difference. First operand has 312 places, 270 transitions, 808 flow. Second operand 4 states and 1072 transitions. [2022-11-16 12:32:02,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 280 transitions, 900 flow [2022-11-16 12:32:02,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 280 transitions, 889 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:32:02,739 INFO L231 Difference]: Finished difference. Result has 310 places, 270 transitions, 806 flow [2022-11-16 12:32:02,740 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=793, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=806, PETRI_PLACES=310, PETRI_TRANSITIONS=270} [2022-11-16 12:32:02,740 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 56 predicate places. [2022-11-16 12:32:02,741 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 270 transitions, 806 flow [2022-11-16 12:32:02,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 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 12:32:02,741 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:32:02,741 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:32:02,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-16 12:32:02,742 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 12:32:02,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:32:02,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1807035594, now seen corresponding path program 1 times [2022-11-16 12:32:02,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:32:02,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527921438] [2022-11-16 12:32:02,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:02,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:32:02,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:32:02,844 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 12:32:02,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:32:02,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527921438] [2022-11-16 12:32:02,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527921438] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:32:02,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:32:02,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:32:02,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727442425] [2022-11-16 12:32:02,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:32:02,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:32:02,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:32:02,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:32:02,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:32:02,848 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 297 [2022-11-16 12:32:02,849 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 270 transitions, 806 flow. Second operand has 6 states, 6 states have (on average 252.5) internal successors, (1515), 6 states have internal predecessors, (1515), 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 12:32:02,849 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:32:02,850 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 297 [2022-11-16 12:32:02,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:32:03,408 INFO L130 PetriNetUnfolder]: 214/1156 cut-off events. [2022-11-16 12:32:03,408 INFO L131 PetriNetUnfolder]: For 369/676 co-relation queries the response was YES. [2022-11-16 12:32:03,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2103 conditions, 1156 events. 214/1156 cut-off events. For 369/676 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 9776 event pairs, 116 based on Foata normal form. 5/1010 useless extension candidates. Maximal degree in co-relation 1915. Up to 271 conditions per place. [2022-11-16 12:32:03,438 INFO L137 encePairwiseOnDemand]: 289/297 looper letters, 48 selfloop transitions, 7 changer transitions 0/285 dead transitions. [2022-11-16 12:32:03,438 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 285 transitions, 960 flow [2022-11-16 12:32:03,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:32:03,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:32:03,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1795 transitions. [2022-11-16 12:32:03,441 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8633958633958634 [2022-11-16 12:32:03,442 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1795 transitions. [2022-11-16 12:32:03,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1795 transitions. [2022-11-16 12:32:03,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:32:03,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1795 transitions. [2022-11-16 12:32:03,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 256.42857142857144) internal successors, (1795), 7 states have internal predecessors, (1795), 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 12:32:03,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 297.0) internal successors, (2376), 8 states have internal predecessors, (2376), 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 12:32:03,449 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 297.0) internal successors, (2376), 8 states have internal predecessors, (2376), 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 12:32:03,449 INFO L175 Difference]: Start difference. First operand has 310 places, 270 transitions, 806 flow. Second operand 7 states and 1795 transitions. [2022-11-16 12:32:03,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 285 transitions, 960 flow [2022-11-16 12:32:03,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 285 transitions, 955 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:32:03,457 INFO L231 Difference]: Finished difference. Result has 317 places, 273 transitions, 837 flow [2022-11-16 12:32:03,457 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=837, PETRI_PLACES=317, PETRI_TRANSITIONS=273} [2022-11-16 12:32:03,458 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 63 predicate places. [2022-11-16 12:32:03,458 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 273 transitions, 837 flow [2022-11-16 12:32:03,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 252.5) internal successors, (1515), 6 states have internal predecessors, (1515), 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 12:32:03,459 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:32:03,459 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:32:03,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-16 12:32:03,459 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 12:32:03,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:32:03,460 INFO L85 PathProgramCache]: Analyzing trace with hash 910559626, now seen corresponding path program 1 times [2022-11-16 12:32:03,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:32:03,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732602177] [2022-11-16 12:32:03,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:03,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:32:03,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:32:03,579 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 12:32:03,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:32:03,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732602177] [2022-11-16 12:32:03,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732602177] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:32:03,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:32:03,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:32:03,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577239908] [2022-11-16 12:32:03,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:32:03,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:32:03,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:32:03,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:32:03,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:32:03,586 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 297 [2022-11-16 12:32:03,587 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 273 transitions, 837 flow. Second operand has 6 states, 6 states have (on average 252.66666666666666) internal successors, (1516), 6 states have internal predecessors, (1516), 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 12:32:03,587 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:32:03,587 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 297 [2022-11-16 12:32:03,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:32:04,134 INFO L130 PetriNetUnfolder]: 202/1139 cut-off events. [2022-11-16 12:32:04,134 INFO L131 PetriNetUnfolder]: For 386/676 co-relation queries the response was YES. [2022-11-16 12:32:04,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2181 conditions, 1139 events. 202/1139 cut-off events. For 386/676 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 9351 event pairs, 92 based on Foata normal form. 5/1024 useless extension candidates. Maximal degree in co-relation 1993. Up to 222 conditions per place. [2022-11-16 12:32:04,169 INFO L137 encePairwiseOnDemand]: 289/297 looper letters, 54 selfloop transitions, 8 changer transitions 0/294 dead transitions. [2022-11-16 12:32:04,170 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 294 transitions, 1034 flow [2022-11-16 12:32:04,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:32:04,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:32:04,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1801 transitions. [2022-11-16 12:32:04,172 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8662818662818663 [2022-11-16 12:32:04,172 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1801 transitions. [2022-11-16 12:32:04,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1801 transitions. [2022-11-16 12:32:04,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:32:04,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1801 transitions. [2022-11-16 12:32:04,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 257.2857142857143) internal successors, (1801), 7 states have internal predecessors, (1801), 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 12:32:04,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 297.0) internal successors, (2376), 8 states have internal predecessors, (2376), 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 12:32:04,180 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 297.0) internal successors, (2376), 8 states have internal predecessors, (2376), 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 12:32:04,180 INFO L175 Difference]: Start difference. First operand has 317 places, 273 transitions, 837 flow. Second operand 7 states and 1801 transitions. [2022-11-16 12:32:04,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 294 transitions, 1034 flow [2022-11-16 12:32:04,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 294 transitions, 1032 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:32:04,189 INFO L231 Difference]: Finished difference. Result has 325 places, 277 transitions, 884 flow [2022-11-16 12:32:04,190 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=831, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=884, PETRI_PLACES=325, PETRI_TRANSITIONS=277} [2022-11-16 12:32:04,190 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 71 predicate places. [2022-11-16 12:32:04,190 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 277 transitions, 884 flow [2022-11-16 12:32:04,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 252.66666666666666) internal successors, (1516), 6 states have internal predecessors, (1516), 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 12:32:04,191 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:32:04,191 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:32:04,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-16 12:32:04,192 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 12:32:04,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:32:04,192 INFO L85 PathProgramCache]: Analyzing trace with hash -153487866, now seen corresponding path program 1 times [2022-11-16 12:32:04,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:32:04,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69443078] [2022-11-16 12:32:04,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:04,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:32:04,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:32:04,319 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 12:32:04,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:32:04,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69443078] [2022-11-16 12:32:04,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69443078] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:32:04,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:32:04,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:32:04,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709084669] [2022-11-16 12:32:04,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:32:04,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:32:04,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:32:04,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:32:04,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:32:04,323 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 297 [2022-11-16 12:32:04,325 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 277 transitions, 884 flow. Second operand has 8 states, 8 states have (on average 249.375) internal successors, (1995), 8 states have internal predecessors, (1995), 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 12:32:04,325 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:32:04,325 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 297 [2022-11-16 12:32:04,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:32:05,224 INFO L130 PetriNetUnfolder]: 620/3210 cut-off events. [2022-11-16 12:32:05,224 INFO L131 PetriNetUnfolder]: For 688/1006 co-relation queries the response was YES. [2022-11-16 12:32:05,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5117 conditions, 3210 events. 620/3210 cut-off events. For 688/1006 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 31906 event pairs, 36 based on Foata normal form. 0/2660 useless extension candidates. Maximal degree in co-relation 4588. Up to 558 conditions per place. [2022-11-16 12:32:05,273 INFO L137 encePairwiseOnDemand]: 287/297 looper letters, 50 selfloop transitions, 9 changer transitions 0/299 dead transitions. [2022-11-16 12:32:05,273 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 299 transitions, 1054 flow [2022-11-16 12:32:05,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:32:05,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 12:32:05,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2036 transitions. [2022-11-16 12:32:05,276 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8569023569023569 [2022-11-16 12:32:05,277 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2036 transitions. [2022-11-16 12:32:05,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2036 transitions. [2022-11-16 12:32:05,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:32:05,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2036 transitions. [2022-11-16 12:32:05,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 254.5) internal successors, (2036), 8 states have internal predecessors, (2036), 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 12:32:05,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 297.0) internal successors, (2673), 9 states have internal predecessors, (2673), 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 12:32:05,285 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 297.0) internal successors, (2673), 9 states have internal predecessors, (2673), 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 12:32:05,286 INFO L175 Difference]: Start difference. First operand has 325 places, 277 transitions, 884 flow. Second operand 8 states and 2036 transitions. [2022-11-16 12:32:05,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 299 transitions, 1054 flow [2022-11-16 12:32:05,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 299 transitions, 1054 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:32:05,295 INFO L231 Difference]: Finished difference. Result has 334 places, 278 transitions, 914 flow [2022-11-16 12:32:05,296 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=884, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=914, PETRI_PLACES=334, PETRI_TRANSITIONS=278} [2022-11-16 12:32:05,296 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 80 predicate places. [2022-11-16 12:32:05,296 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 278 transitions, 914 flow [2022-11-16 12:32:05,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 249.375) internal successors, (1995), 8 states have internal predecessors, (1995), 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 12:32:05,297 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:32:05,297 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:32:05,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-16 12:32:05,298 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 12:32:05,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:32:05,298 INFO L85 PathProgramCache]: Analyzing trace with hash -463155640, now seen corresponding path program 1 times [2022-11-16 12:32:05,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:32:05,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930852911] [2022-11-16 12:32:05,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:05,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:32:05,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:32:05,414 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 12:32:05,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:32:05,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930852911] [2022-11-16 12:32:05,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930852911] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:32:05,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:32:05,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:32:05,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266582800] [2022-11-16 12:32:05,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:32:05,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:32:05,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:32:05,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:32:05,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:32:05,418 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 297 [2022-11-16 12:32:05,420 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 278 transitions, 914 flow. Second operand has 8 states, 8 states have (on average 249.5) internal successors, (1996), 8 states have internal predecessors, (1996), 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 12:32:05,420 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:32:05,420 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 297 [2022-11-16 12:32:05,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:32:06,343 INFO L130 PetriNetUnfolder]: 530/3100 cut-off events. [2022-11-16 12:32:06,343 INFO L131 PetriNetUnfolder]: For 762/1346 co-relation queries the response was YES. [2022-11-16 12:32:06,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5051 conditions, 3100 events. 530/3100 cut-off events. For 762/1346 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 30377 event pairs, 48 based on Foata normal form. 0/2649 useless extension candidates. Maximal degree in co-relation 4516. Up to 496 conditions per place. [2022-11-16 12:32:06,386 INFO L137 encePairwiseOnDemand]: 287/297 looper letters, 53 selfloop transitions, 9 changer transitions 0/302 dead transitions. [2022-11-16 12:32:06,386 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 302 transitions, 1101 flow [2022-11-16 12:32:06,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:32:06,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 12:32:06,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2038 transitions. [2022-11-16 12:32:06,389 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8577441077441077 [2022-11-16 12:32:06,389 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2038 transitions. [2022-11-16 12:32:06,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2038 transitions. [2022-11-16 12:32:06,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:32:06,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2038 transitions. [2022-11-16 12:32:06,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 254.75) internal successors, (2038), 8 states have internal predecessors, (2038), 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 12:32:06,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 297.0) internal successors, (2673), 9 states have internal predecessors, (2673), 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 12:32:06,397 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 297.0) internal successors, (2673), 9 states have internal predecessors, (2673), 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 12:32:06,397 INFO L175 Difference]: Start difference. First operand has 334 places, 278 transitions, 914 flow. Second operand 8 states and 2038 transitions. [2022-11-16 12:32:06,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 302 transitions, 1101 flow [2022-11-16 12:32:06,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 302 transitions, 1092 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:32:06,408 INFO L231 Difference]: Finished difference. Result has 339 places, 279 transitions, 935 flow [2022-11-16 12:32:06,408 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=905, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=935, PETRI_PLACES=339, PETRI_TRANSITIONS=279} [2022-11-16 12:32:06,409 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 85 predicate places. [2022-11-16 12:32:06,409 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 279 transitions, 935 flow [2022-11-16 12:32:06,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 249.5) internal successors, (1996), 8 states have internal predecessors, (1996), 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 12:32:06,410 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:32:06,410 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:32:06,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-16 12:32:06,410 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 12:32:06,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:32:06,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1357005324, now seen corresponding path program 1 times [2022-11-16 12:32:06,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:32:06,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146990843] [2022-11-16 12:32:06,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:06,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:32:06,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:32:06,520 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 12:32:06,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:32:06,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146990843] [2022-11-16 12:32:06,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146990843] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:32:06,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:32:06,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:32:06,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660884586] [2022-11-16 12:32:06,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:32:06,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:32:06,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:32:06,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:32:06,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:32:06,524 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 297 [2022-11-16 12:32:06,525 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 279 transitions, 935 flow. Second operand has 6 states, 6 states have (on average 252.66666666666666) internal successors, (1516), 6 states have internal predecessors, (1516), 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 12:32:06,526 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:32:06,526 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 297 [2022-11-16 12:32:06,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:32:07,214 INFO L130 PetriNetUnfolder]: 656/2384 cut-off events. [2022-11-16 12:32:07,214 INFO L131 PetriNetUnfolder]: For 1028/1325 co-relation queries the response was YES. [2022-11-16 12:32:07,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4495 conditions, 2384 events. 656/2384 cut-off events. For 1028/1325 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 26532 event pairs, 348 based on Foata normal form. 17/1905 useless extension candidates. Maximal degree in co-relation 4392. Up to 741 conditions per place. [2022-11-16 12:32:07,249 INFO L137 encePairwiseOnDemand]: 289/297 looper letters, 40 selfloop transitions, 7 changer transitions 4/293 dead transitions. [2022-11-16 12:32:07,249 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 293 transitions, 1073 flow [2022-11-16 12:32:07,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:32:07,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:32:07,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1794 transitions. [2022-11-16 12:32:07,252 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.862914862914863 [2022-11-16 12:32:07,252 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1794 transitions. [2022-11-16 12:32:07,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1794 transitions. [2022-11-16 12:32:07,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:32:07,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1794 transitions. [2022-11-16 12:32:07,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 256.2857142857143) internal successors, (1794), 7 states have internal predecessors, (1794), 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 12:32:07,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 297.0) internal successors, (2376), 8 states have internal predecessors, (2376), 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 12:32:07,258 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 297.0) internal successors, (2376), 8 states have internal predecessors, (2376), 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 12:32:07,259 INFO L175 Difference]: Start difference. First operand has 339 places, 279 transitions, 935 flow. Second operand 7 states and 1794 transitions. [2022-11-16 12:32:07,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 293 transitions, 1073 flow [2022-11-16 12:32:07,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 293 transitions, 1062 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:32:07,270 INFO L231 Difference]: Finished difference. Result has 343 places, 282 transitions, 960 flow [2022-11-16 12:32:07,270 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=920, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=960, PETRI_PLACES=343, PETRI_TRANSITIONS=282} [2022-11-16 12:32:07,271 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 89 predicate places. [2022-11-16 12:32:07,271 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 282 transitions, 960 flow [2022-11-16 12:32:07,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 252.66666666666666) internal successors, (1516), 6 states have internal predecessors, (1516), 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 12:32:07,272 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:32:07,272 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:32:07,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-16 12:32:07,272 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 12:32:07,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:32:07,273 INFO L85 PathProgramCache]: Analyzing trace with hash -155476789, now seen corresponding path program 1 times [2022-11-16 12:32:07,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:32:07,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083234896] [2022-11-16 12:32:07,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:07,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:32:07,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:32:07,399 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 12:32:07,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:32:07,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083234896] [2022-11-16 12:32:07,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083234896] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:32:07,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:32:07,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:32:07,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400247561] [2022-11-16 12:32:07,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:32:07,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:32:07,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:32:07,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:32:07,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:32:07,403 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 297 [2022-11-16 12:32:07,404 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 282 transitions, 960 flow. Second operand has 6 states, 6 states have (on average 252.83333333333334) internal successors, (1517), 6 states have internal predecessors, (1517), 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 12:32:07,404 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:32:07,404 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 297 [2022-11-16 12:32:07,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:32:08,281 INFO L130 PetriNetUnfolder]: 608/2323 cut-off events. [2022-11-16 12:32:08,281 INFO L131 PetriNetUnfolder]: For 1080/1360 co-relation queries the response was YES. [2022-11-16 12:32:08,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4696 conditions, 2323 events. 608/2323 cut-off events. For 1080/1360 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 25516 event pairs, 288 based on Foata normal form. 13/1941 useless extension candidates. Maximal degree in co-relation 4594. Up to 616 conditions per place. [2022-11-16 12:32:08,308 INFO L137 encePairwiseOnDemand]: 289/297 looper letters, 0 selfloop transitions, 0 changer transitions 303/303 dead transitions. [2022-11-16 12:32:08,308 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 303 transitions, 1154 flow [2022-11-16 12:32:08,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:32:08,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:32:08,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1800 transitions. [2022-11-16 12:32:08,311 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8658008658008658 [2022-11-16 12:32:08,311 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1800 transitions. [2022-11-16 12:32:08,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1800 transitions. [2022-11-16 12:32:08,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:32:08,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1800 transitions. [2022-11-16 12:32:08,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 257.14285714285717) internal successors, (1800), 7 states have internal predecessors, (1800), 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 12:32:08,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 297.0) internal successors, (2376), 8 states have internal predecessors, (2376), 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 12:32:08,317 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 297.0) internal successors, (2376), 8 states have internal predecessors, (2376), 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 12:32:08,317 INFO L175 Difference]: Start difference. First operand has 343 places, 282 transitions, 960 flow. Second operand 7 states and 1800 transitions. [2022-11-16 12:32:08,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 303 transitions, 1154 flow [2022-11-16 12:32:08,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 303 transitions, 1152 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:32:08,332 INFO L231 Difference]: Finished difference. Result has 347 places, 0 transitions, 0 flow [2022-11-16 12:32:08,333 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=954, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=347, PETRI_TRANSITIONS=0} [2022-11-16 12:32:08,333 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 93 predicate places. [2022-11-16 12:32:08,334 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 0 transitions, 0 flow [2022-11-16 12:32:08,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 252.83333333333334) internal successors, (1517), 6 states have internal predecessors, (1517), 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 12:32:08,337 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 39 remaining) [2022-11-16 12:32:08,338 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 39 remaining) [2022-11-16 12:32:08,338 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 39 remaining) [2022-11-16 12:32:08,339 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 39 remaining) [2022-11-16 12:32:08,339 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 39 remaining) [2022-11-16 12:32:08,339 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 39 remaining) [2022-11-16 12:32:08,340 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 39 remaining) [2022-11-16 12:32:08,340 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 39 remaining) [2022-11-16 12:32:08,340 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 39 remaining) [2022-11-16 12:32:08,340 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 39 remaining) [2022-11-16 12:32:08,341 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 39 remaining) [2022-11-16 12:32:08,341 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 39 remaining) [2022-11-16 12:32:08,341 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 39 remaining) [2022-11-16 12:32:08,342 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 39 remaining) [2022-11-16 12:32:08,342 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 39 remaining) [2022-11-16 12:32:08,342 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 39 remaining) [2022-11-16 12:32:08,342 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 39 remaining) [2022-11-16 12:32:08,343 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 39 remaining) [2022-11-16 12:32:08,343 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 39 remaining) [2022-11-16 12:32:08,343 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 39 remaining) [2022-11-16 12:32:08,343 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 39 remaining) [2022-11-16 12:32:08,343 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 39 remaining) [2022-11-16 12:32:08,344 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 39 remaining) [2022-11-16 12:32:08,344 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 39 remaining) [2022-11-16 12:32:08,344 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 39 remaining) [2022-11-16 12:32:08,344 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 39 remaining) [2022-11-16 12:32:08,345 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 39 remaining) [2022-11-16 12:32:08,345 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 39 remaining) [2022-11-16 12:32:08,345 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 39 remaining) [2022-11-16 12:32:08,345 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 39 remaining) [2022-11-16 12:32:08,346 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 39 remaining) [2022-11-16 12:32:08,346 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 39 remaining) [2022-11-16 12:32:08,346 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 39 remaining) [2022-11-16 12:32:08,346 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 39 remaining) [2022-11-16 12:32:08,347 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 39 remaining) [2022-11-16 12:32:08,347 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 39 remaining) [2022-11-16 12:32:08,347 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 39 remaining) [2022-11-16 12:32:08,347 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 39 remaining) [2022-11-16 12:32:08,348 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 39 remaining) [2022-11-16 12:32:08,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-16 12:32:08,348 INFO L444 BasicCegarLoop]: Path program 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] [2022-11-16 12:32:08,355 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-16 12:32:08,355 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 12:32:08,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:32:08 BasicIcfg [2022-11-16 12:32:08,360 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 12:32:08,361 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 12:32:08,361 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 12:32:08,361 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 12:32:08,362 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:31:45" (3/4) ... [2022-11-16 12:32:08,365 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 12:32:08,371 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-16 12:32:08,372 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-16 12:32:08,372 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-16 12:32:08,377 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-11-16 12:32:08,377 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-16 12:32:08,377 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-16 12:32:08,377 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 12:32:08,414 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2a06e7-ad5d-49b2-b4ef-7815eef72089/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 12:32:08,414 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 12:32:08,415 INFO L158 Benchmark]: Toolchain (without parser) took 24014.17ms. Allocated memory was 144.7MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 110.0MB in the beginning and 945.0MB in the end (delta: -835.0MB). Peak memory consumption was 228.6MB. Max. memory is 16.1GB. [2022-11-16 12:32:08,415 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 83.9MB. Free memory is still 37.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:32:08,416 INFO L158 Benchmark]: CACSL2BoogieTranslator took 308.18ms. Allocated memory is still 144.7MB. Free memory was 109.7MB in the beginning and 117.2MB in the end (delta: -7.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 12:32:08,416 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.26ms. Allocated memory is still 144.7MB. Free memory was 117.2MB in the beginning and 114.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:32:08,416 INFO L158 Benchmark]: Boogie Preprocessor took 28.07ms. Allocated memory is still 144.7MB. Free memory was 114.8MB in the beginning and 113.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:32:08,417 INFO L158 Benchmark]: RCFGBuilder took 783.80ms. Allocated memory is still 144.7MB. Free memory was 113.1MB in the beginning and 89.5MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-16 12:32:08,417 INFO L158 Benchmark]: TraceAbstraction took 22787.89ms. Allocated memory was 144.7MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 88.7MB in the beginning and 948.1MB in the end (delta: -859.4MB). Peak memory consumption was 541.9MB. Max. memory is 16.1GB. [2022-11-16 12:32:08,418 INFO L158 Benchmark]: Witness Printer took 53.58ms. Allocated memory is still 1.2GB. Free memory was 948.1MB in the beginning and 945.0MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 12:32:08,419 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 83.9MB. Free memory is still 37.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 308.18ms. Allocated memory is still 144.7MB. Free memory was 109.7MB in the beginning and 117.2MB in the end (delta: -7.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.26ms. Allocated memory is still 144.7MB. Free memory was 117.2MB in the beginning and 114.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.07ms. Allocated memory is still 144.7MB. Free memory was 114.8MB in the beginning and 113.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 783.80ms. Allocated memory is still 144.7MB. Free memory was 113.1MB in the beginning and 89.5MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 22787.89ms. Allocated memory was 144.7MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 88.7MB in the beginning and 948.1MB in the end (delta: -859.4MB). Peak memory consumption was 541.9MB. Max. memory is 16.1GB. * Witness Printer took 53.58ms. Allocated memory is still 1.2GB. Free memory was 948.1MB in the beginning and 945.0MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 461 locations, 39 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 22.6s, OverallIterations: 27, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 18.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1571 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1571 mSDsluCounter, 805 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 428 mSDsCounter, 63 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2976 IncrementalHoareTripleChecker+Invalid, 3039 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 63 mSolverCounterUnsat, 377 mSDtfsCounter, 2976 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 195 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=960occurred in iteration=26, InterpolantAutomatonStates: 166, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 1959 NumberOfCodeBlocks, 1959 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 1932 ConstructedInterpolants, 0 QuantifiedInterpolants, 4247 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 27 InterpolantComputations, 27 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 18 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-16 12:32:08,437 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2a06e7-ad5d-49b2-b4ef-7815eef72089/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE