./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/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_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/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_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/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 566e2cbe460cf96671c9cef5a53ce51910e23c462e96f394be80b957976729c5 --- 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 12:28:06,647 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:28:06,653 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:28:06,689 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:28:06,690 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:28:06,691 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:28:06,692 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:28:06,694 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:28:06,696 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:28:06,697 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:28:06,698 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:28:06,700 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:28:06,702 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:28:06,703 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:28:06,707 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:28:06,708 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:28:06,710 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:28:06,715 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:28:06,716 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:28:06,719 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:28:06,723 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:28:06,728 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:28:06,729 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:28:06,730 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:28:06,734 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:28:06,740 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:28:06,741 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:28:06,742 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:28:06,742 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:28:06,743 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:28:06,745 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:28:06,746 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:28:06,747 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:28:06,749 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:28:06,750 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:28:06,751 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:28:06,752 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:28:06,752 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:28:06,753 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:28:06,754 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:28:06,755 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:28:06,755 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 12:28:06,788 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:28:06,788 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:28:06,789 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:28:06,789 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:28:06,791 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:28:06,791 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:28:06,792 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:28:06,792 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:28:06,792 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:28:06,793 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:28:06,794 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:28:06,794 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:28:06,795 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:28:06,795 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:28:06,795 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:28:06,795 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:28:06,796 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:28:06,796 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:28:06,796 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 12:28:06,796 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:28:06,797 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:28:06,797 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:28:06,797 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:28:06,798 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:28:06,798 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:28:06,798 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:28:06,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:28:06,799 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:28:06,799 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:28:06,799 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:28:06,800 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:28:06,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:28:06,801 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:28:06,801 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:28:06,801 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:28:06,801 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_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 566e2cbe460cf96671c9cef5a53ce51910e23c462e96f394be80b957976729c5 [2022-11-16 12:28:07,114 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:28:07,141 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:28:07,145 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:28:07,146 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:28:07,147 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:28:07,148 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i [2022-11-16 12:28:07,228 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/data/09a827df9/8dc192e18ce94f688aef8805717d0cf1/FLAGbdfe1de67 [2022-11-16 12:28:07,765 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:28:07,765 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i [2022-11-16 12:28:07,783 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/data/09a827df9/8dc192e18ce94f688aef8805717d0cf1/FLAGbdfe1de67 [2022-11-16 12:28:08,048 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/data/09a827df9/8dc192e18ce94f688aef8805717d0cf1 [2022-11-16 12:28:08,051 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:28:08,052 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:28:08,056 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:28:08,056 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:28:08,060 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:28:08,060 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:28:08" (1/1) ... [2022-11-16 12:28:08,062 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@646a0a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:08, skipping insertion in model container [2022-11-16 12:28:08,062 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:28:08" (1/1) ... [2022-11-16 12:28:08,070 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:28:08,117 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:28:08,676 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_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i[41323,41336] [2022-11-16 12:28:08,706 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:28:08,726 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:28:08,760 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_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i[41323,41336] [2022-11-16 12:28:08,774 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:28:08,835 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:28:08,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:08 WrapperNode [2022-11-16 12:28:08,835 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:28:08,836 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:28:08,837 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:28:08,837 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:28:08,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:08" (1/1) ... [2022-11-16 12:28:08,867 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:08" (1/1) ... [2022-11-16 12:28:08,902 INFO L138 Inliner]: procedures = 271, calls = 41, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 269 [2022-11-16 12:28:08,902 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:28:08,903 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:28:08,903 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:28:08,903 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:28:08,913 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:08" (1/1) ... [2022-11-16 12:28:08,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:08" (1/1) ... [2022-11-16 12:28:08,918 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:08" (1/1) ... [2022-11-16 12:28:08,918 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:08" (1/1) ... [2022-11-16 12:28:08,928 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:08" (1/1) ... [2022-11-16 12:28:08,936 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:08" (1/1) ... [2022-11-16 12:28:08,939 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:08" (1/1) ... [2022-11-16 12:28:08,941 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:08" (1/1) ... [2022-11-16 12:28:08,944 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:28:08,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:28:08,946 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:28:08,946 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:28:08,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:08" (1/1) ... [2022-11-16 12:28:08,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:28:08,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:28:08,979 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:28:08,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:28:09,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:28:09,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:28:09,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:28:09,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:28:09,027 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 12:28:09,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:28:09,027 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-16 12:28:09,027 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-16 12:28:09,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:28:09,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:28:09,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:28:09,030 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 12:28:09,173 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:28:09,176 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:28:09,665 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:28:09,675 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:28:09,675 INFO L300 CfgBuilder]: Removed 35 assume(true) statements. [2022-11-16 12:28:09,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:28:09 BoogieIcfgContainer [2022-11-16 12:28:09,678 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:28:09,690 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:28:09,690 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:28:09,695 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:28:09,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:28:08" (1/3) ... [2022-11-16 12:28:09,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2297dd17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:28:09, skipping insertion in model container [2022-11-16 12:28:09,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:08" (2/3) ... [2022-11-16 12:28:09,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2297dd17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:28:09, skipping insertion in model container [2022-11-16 12:28:09,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:28:09" (3/3) ... [2022-11-16 12:28:09,699 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_72-funloop_hard_racing.i [2022-11-16 12:28:09,709 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:28:09,720 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:28:09,720 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2022-11-16 12:28:09,720 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:28:09,814 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-16 12:28:09,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 254 places, 296 transitions, 600 flow [2022-11-16 12:28:10,018 INFO L130 PetriNetUnfolder]: 73/453 cut-off events. [2022-11-16 12:28:10,019 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 12:28:10,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 459 conditions, 453 events. 73/453 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2194 event pairs, 0 based on Foata normal form. 0/345 useless extension candidates. Maximal degree in co-relation 248. Up to 8 conditions per place. [2022-11-16 12:28:10,032 INFO L82 GeneralOperation]: Start removeDead. Operand has 254 places, 296 transitions, 600 flow [2022-11-16 12:28:10,050 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 252 places, 293 transitions, 594 flow [2022-11-16 12:28:10,070 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:28:10,078 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;@1b425d2d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:28:10,078 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2022-11-16 12:28:10,085 INFO L130 PetriNetUnfolder]: 2/32 cut-off events. [2022-11-16 12:28:10,085 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:28:10,085 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:10,086 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] [2022-11-16 12:28:10,086 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-16 12:28:10,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:10,092 INFO L85 PathProgramCache]: Analyzing trace with hash 845188103, now seen corresponding path program 1 times [2022-11-16 12:28:10,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:10,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912741680] [2022-11-16 12:28:10,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:10,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:10,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:10,549 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 12:28:10,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:10,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912741680] [2022-11-16 12:28:10,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912741680] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:10,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:28:10,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:28:10,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101231678] [2022-11-16 12:28:10,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:10,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:28:10,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:10,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:28:10,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:28:10,636 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 296 [2022-11-16 12:28:10,644 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 293 transitions, 594 flow. Second operand has 4 states, 4 states have (on average 242.5) internal successors, (970), 4 states have internal predecessors, (970), 0 states have call successors, (0), 0 states 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 12:28:10,646 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:10,647 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 296 [2022-11-16 12:28:10,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:10,876 INFO L130 PetriNetUnfolder]: 9/389 cut-off events. [2022-11-16 12:28:10,876 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-16 12:28:10,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 417 conditions, 389 events. 9/389 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1762 event pairs, 0 based on Foata normal form. 62/402 useless extension candidates. Maximal degree in co-relation 210. Up to 15 conditions per place. [2022-11-16 12:28:10,882 INFO L137 encePairwiseOnDemand]: 251/296 looper letters, 17 selfloop transitions, 4 changer transitions 0/259 dead transitions. [2022-11-16 12:28:10,883 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 259 transitions, 568 flow [2022-11-16 12:28:10,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:28:10,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:28:10,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1268 transitions. [2022-11-16 12:28:10,903 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8567567567567568 [2022-11-16 12:28:10,905 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1268 transitions. [2022-11-16 12:28:10,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1268 transitions. [2022-11-16 12:28:10,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:10,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1268 transitions. [2022-11-16 12:28:10,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 253.6) internal successors, (1268), 5 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states 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 12:28:10,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 296.0) internal successors, (1776), 6 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states 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 12:28:10,940 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 296.0) internal successors, (1776), 6 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states 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 12:28:10,942 INFO L175 Difference]: Start difference. First operand has 252 places, 293 transitions, 594 flow. Second operand 5 states and 1268 transitions. [2022-11-16 12:28:10,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 259 transitions, 568 flow [2022-11-16 12:28:10,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 259 transitions, 568 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:28:10,958 INFO L231 Difference]: Finished difference. Result has 256 places, 255 transitions, 544 flow [2022-11-16 12:28:10,961 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=544, PETRI_PLACES=256, PETRI_TRANSITIONS=255} [2022-11-16 12:28:10,968 INFO L288 CegarLoopForPetriNet]: 252 programPoint places, 4 predicate places. [2022-11-16 12:28:10,969 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 255 transitions, 544 flow [2022-11-16 12:28:10,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 242.5) internal successors, (970), 4 states have internal predecessors, (970), 0 states have call successors, (0), 0 states 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 12:28:10,970 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:10,970 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:10,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:28:10,971 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-16 12:28:10,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:10,972 INFO L85 PathProgramCache]: Analyzing trace with hash -685977515, now seen corresponding path program 1 times [2022-11-16 12:28:10,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:10,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9175652] [2022-11-16 12:28:10,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:10,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:11,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:11,076 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:28:11,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:11,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9175652] [2022-11-16 12:28:11,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9175652] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:11,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:28:11,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:28:11,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256507426] [2022-11-16 12:28:11,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:11,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:28:11,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:11,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:28:11,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:28:11,082 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 296 [2022-11-16 12:28:11,083 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 255 transitions, 544 flow. Second operand has 4 states, 4 states have (on average 244.25) internal successors, (977), 4 states have internal predecessors, (977), 0 states have call successors, (0), 0 states 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 12:28:11,083 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:11,084 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 296 [2022-11-16 12:28:11,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:11,185 INFO L130 PetriNetUnfolder]: 9/388 cut-off events. [2022-11-16 12:28:11,185 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-16 12:28:11,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 431 conditions, 388 events. 9/388 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1756 event pairs, 0 based on Foata normal form. 1/343 useless extension candidates. Maximal degree in co-relation 378. Up to 7 conditions per place. [2022-11-16 12:28:11,190 INFO L137 encePairwiseOnDemand]: 290/296 looper letters, 9 selfloop transitions, 8 changer transitions 0/255 dead transitions. [2022-11-16 12:28:11,191 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 255 transitions, 576 flow [2022-11-16 12:28:11,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:28:11,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:28:11,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1220 transitions. [2022-11-16 12:28:11,195 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8243243243243243 [2022-11-16 12:28:11,195 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1220 transitions. [2022-11-16 12:28:11,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1220 transitions. [2022-11-16 12:28:11,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:11,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1220 transitions. [2022-11-16 12:28:11,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 244.0) internal successors, (1220), 5 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states 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 12:28:11,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 296.0) internal successors, (1776), 6 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states 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 12:28:11,204 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 296.0) internal successors, (1776), 6 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states 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 12:28:11,204 INFO L175 Difference]: Start difference. First operand has 256 places, 255 transitions, 544 flow. Second operand 5 states and 1220 transitions. [2022-11-16 12:28:11,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 255 transitions, 576 flow [2022-11-16 12:28:11,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 255 transitions, 574 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:28:11,211 INFO L231 Difference]: Finished difference. Result has 259 places, 255 transitions, 562 flow [2022-11-16 12:28:11,212 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=562, PETRI_PLACES=259, PETRI_TRANSITIONS=255} [2022-11-16 12:28:11,213 INFO L288 CegarLoopForPetriNet]: 252 programPoint places, 7 predicate places. [2022-11-16 12:28:11,213 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 255 transitions, 562 flow [2022-11-16 12:28:11,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 244.25) internal successors, (977), 4 states have internal predecessors, (977), 0 states have call successors, (0), 0 states 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 12:28:11,214 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:11,215 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:11,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:28:11,215 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-16 12:28:11,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:11,216 INFO L85 PathProgramCache]: Analyzing trace with hash 209534281, now seen corresponding path program 1 times [2022-11-16 12:28:11,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:11,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857892452] [2022-11-16 12:28:11,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:11,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:11,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:11,370 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:28:11,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:11,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857892452] [2022-11-16 12:28:11,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857892452] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:28:11,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665971943] [2022-11-16 12:28:11,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:11,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:11,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:28:11,379 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:28:11,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:28:11,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:11,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:28:11,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:11,608 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:28:11,609 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:28:11,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665971943] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:11,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:28:11,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-16 12:28:11,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580672363] [2022-11-16 12:28:11,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:11,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:28:11,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:11,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:28:11,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:28:11,616 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 296 [2022-11-16 12:28:11,618 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 255 transitions, 562 flow. Second operand has 5 states, 5 states have (on average 243.8) internal successors, (1219), 5 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states 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 12:28:11,618 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:11,618 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 296 [2022-11-16 12:28:11,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:11,733 INFO L130 PetriNetUnfolder]: 9/387 cut-off events. [2022-11-16 12:28:11,733 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2022-11-16 12:28:11,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 438 conditions, 387 events. 9/387 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1749 event pairs, 0 based on Foata normal form. 1/342 useless extension candidates. Maximal degree in co-relation 376. Up to 10 conditions per place. [2022-11-16 12:28:11,738 INFO L137 encePairwiseOnDemand]: 292/296 looper letters, 11 selfloop transitions, 5 changer transitions 0/254 dead transitions. [2022-11-16 12:28:11,738 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 254 transitions, 590 flow [2022-11-16 12:28:11,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:28:11,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:28:11,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 977 transitions. [2022-11-16 12:28:11,742 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.825168918918919 [2022-11-16 12:28:11,742 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 977 transitions. [2022-11-16 12:28:11,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 977 transitions. [2022-11-16 12:28:11,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:11,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 977 transitions. [2022-11-16 12:28:11,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 244.25) internal successors, (977), 4 states have internal predecessors, (977), 0 states have call successors, (0), 0 states 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 12:28:11,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 296.0) internal successors, (1480), 5 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states 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 12:28:11,750 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 296.0) internal successors, (1480), 5 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states 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 12:28:11,750 INFO L175 Difference]: Start difference. First operand has 259 places, 255 transitions, 562 flow. Second operand 4 states and 977 transitions. [2022-11-16 12:28:11,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 254 transitions, 590 flow [2022-11-16 12:28:11,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 254 transitions, 578 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:28:11,756 INFO L231 Difference]: Finished difference. Result has 258 places, 254 transitions, 556 flow [2022-11-16 12:28:11,757 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=556, PETRI_PLACES=258, PETRI_TRANSITIONS=254} [2022-11-16 12:28:11,760 INFO L288 CegarLoopForPetriNet]: 252 programPoint places, 6 predicate places. [2022-11-16 12:28:11,761 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 254 transitions, 556 flow [2022-11-16 12:28:11,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 243.8) internal successors, (1219), 5 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states 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 12:28:11,762 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:11,762 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] [2022-11-16 12:28:11,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:28:11,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:11,967 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-16 12:28:11,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:11,967 INFO L85 PathProgramCache]: Analyzing trace with hash -212299625, now seen corresponding path program 1 times [2022-11-16 12:28:11,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:11,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141902524] [2022-11-16 12:28:11,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:11,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:11,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:12,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:28:12,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:12,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141902524] [2022-11-16 12:28:12,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141902524] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:28:12,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524289170] [2022-11-16 12:28:12,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:12,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:12,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:28:12,099 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:28:12,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:28:12,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:12,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:28:12,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:12,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:28:12,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:28:12,310 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:28:12,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524289170] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:28:12,312 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:28:12,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 12:28:12,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458203284] [2022-11-16 12:28:12,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:28:12,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:28:12,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:12,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:28:12,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:28:12,325 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 296 [2022-11-16 12:28:12,328 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 254 transitions, 556 flow. Second operand has 10 states, 10 states have (on average 243.7) internal successors, (2437), 10 states have internal predecessors, (2437), 0 states have call successors, (0), 0 states 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 12:28:12,328 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:12,334 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 296 [2022-11-16 12:28:12,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:12,536 INFO L130 PetriNetUnfolder]: 9/395 cut-off events. [2022-11-16 12:28:12,537 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-11-16 12:28:12,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 462 conditions, 395 events. 9/395 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1736 event pairs, 0 based on Foata normal form. 2/351 useless extension candidates. Maximal degree in co-relation 366. Up to 7 conditions per place. [2022-11-16 12:28:12,541 INFO L137 encePairwiseOnDemand]: 290/296 looper letters, 18 selfloop transitions, 9 changer transitions 0/265 dead transitions. [2022-11-16 12:28:12,541 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 265 transitions, 648 flow [2022-11-16 12:28:12,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:28:12,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:28:12,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2198 transitions. [2022-11-16 12:28:12,547 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.825075075075075 [2022-11-16 12:28:12,547 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2198 transitions. [2022-11-16 12:28:12,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2198 transitions. [2022-11-16 12:28:12,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:12,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2198 transitions. [2022-11-16 12:28:12,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 244.22222222222223) internal successors, (2198), 9 states have internal predecessors, (2198), 0 states have call successors, (0), 0 states 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 12:28:12,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 296.0) internal successors, (2960), 10 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states 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 12:28:12,562 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 296.0) internal successors, (2960), 10 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states 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 12:28:12,562 INFO L175 Difference]: Start difference. First operand has 258 places, 254 transitions, 556 flow. Second operand 9 states and 2198 transitions. [2022-11-16 12:28:12,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 265 transitions, 648 flow [2022-11-16 12:28:12,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 265 transitions, 634 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:28:12,568 INFO L231 Difference]: Finished difference. Result has 267 places, 258 transitions, 602 flow [2022-11-16 12:28:12,569 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=602, PETRI_PLACES=267, PETRI_TRANSITIONS=258} [2022-11-16 12:28:12,570 INFO L288 CegarLoopForPetriNet]: 252 programPoint places, 15 predicate places. [2022-11-16 12:28:12,571 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 258 transitions, 602 flow [2022-11-16 12:28:12,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 243.7) internal successors, (2437), 10 states have internal predecessors, (2437), 0 states have call successors, (0), 0 states 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 12:28:12,572 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:12,573 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:28:12,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:28:12,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:12,778 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-16 12:28:12,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:12,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1291795671, now seen corresponding path program 2 times [2022-11-16 12:28:12,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:12,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310916909] [2022-11-16 12:28:12,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:12,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:12,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:12,923 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 12:28:12,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:12,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310916909] [2022-11-16 12:28:12,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310916909] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:12,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:28:12,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:28:12,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561928858] [2022-11-16 12:28:12,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:12,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:28:12,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:12,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:28:12,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:28:12,927 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 296 [2022-11-16 12:28:12,929 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 258 transitions, 602 flow. Second operand has 4 states, 4 states have (on average 242.75) internal successors, (971), 4 states have internal predecessors, (971), 0 states have call successors, (0), 0 states 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 12:28:12,929 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:12,929 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 296 [2022-11-16 12:28:12,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:13,010 INFO L130 PetriNetUnfolder]: 6/267 cut-off events. [2022-11-16 12:28:13,010 INFO L131 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2022-11-16 12:28:13,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 337 conditions, 267 events. 6/267 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 811 event pairs, 0 based on Foata normal form. 0/240 useless extension candidates. Maximal degree in co-relation 250. Up to 7 conditions per place. [2022-11-16 12:28:13,015 INFO L137 encePairwiseOnDemand]: 289/296 looper letters, 10 selfloop transitions, 4 changer transitions 0/258 dead transitions. [2022-11-16 12:28:13,015 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 258 transitions, 630 flow [2022-11-16 12:28:13,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:28:13,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:28:13,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1222 transitions. [2022-11-16 12:28:13,019 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8256756756756757 [2022-11-16 12:28:13,019 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1222 transitions. [2022-11-16 12:28:13,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1222 transitions. [2022-11-16 12:28:13,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:13,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1222 transitions. [2022-11-16 12:28:13,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 244.4) internal successors, (1222), 5 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states 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 12:28:13,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 296.0) internal successors, (1776), 6 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states 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 12:28:13,027 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 296.0) internal successors, (1776), 6 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states 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 12:28:13,027 INFO L175 Difference]: Start difference. First operand has 267 places, 258 transitions, 602 flow. Second operand 5 states and 1222 transitions. [2022-11-16 12:28:13,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 258 transitions, 630 flow [2022-11-16 12:28:13,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 258 transitions, 614 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-11-16 12:28:13,035 INFO L231 Difference]: Finished difference. Result has 266 places, 256 transitions, 594 flow [2022-11-16 12:28:13,035 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=594, PETRI_PLACES=266, PETRI_TRANSITIONS=256} [2022-11-16 12:28:13,036 INFO L288 CegarLoopForPetriNet]: 252 programPoint places, 14 predicate places. [2022-11-16 12:28:13,036 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 256 transitions, 594 flow [2022-11-16 12:28:13,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 242.75) internal successors, (971), 4 states have internal predecessors, (971), 0 states have call successors, (0), 0 states 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 12:28:13,037 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:13,037 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:13,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:28:13,038 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-16 12:28:13,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:13,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1301276799, now seen corresponding path program 1 times [2022-11-16 12:28:13,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:13,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050203929] [2022-11-16 12:28:13,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:13,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:13,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:13,275 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:28:13,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:13,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050203929] [2022-11-16 12:28:13,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050203929] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:28:13,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981660376] [2022-11-16 12:28:13,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:13,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:13,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:28:13,279 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:28:13,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:28:13,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:13,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:28:13,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:13,504 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:28:13,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:28:13,632 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:28:13,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981660376] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:28:13,633 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:28:13,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-16 12:28:13,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213231254] [2022-11-16 12:28:13,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:28:13,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:28:13,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:13,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:28:13,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:28:13,643 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 296 [2022-11-16 12:28:13,648 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 256 transitions, 594 flow. Second operand has 18 states, 18 states have (on average 244.05555555555554) internal successors, (4393), 18 states have internal predecessors, (4393), 0 states have call successors, (0), 0 states 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 12:28:13,649 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:13,651 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 296 [2022-11-16 12:28:13,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:13,954 INFO L130 PetriNetUnfolder]: 6/295 cut-off events. [2022-11-16 12:28:13,954 INFO L131 PetriNetUnfolder]: For 57/57 co-relation queries the response was YES. [2022-11-16 12:28:13,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 445 conditions, 295 events. 6/295 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 812 event pairs, 0 based on Foata normal form. 4/273 useless extension candidates. Maximal degree in co-relation 243. Up to 9 conditions per place. [2022-11-16 12:28:13,959 INFO L137 encePairwiseOnDemand]: 290/296 looper letters, 34 selfloop transitions, 21 changer transitions 0/291 dead transitions. [2022-11-16 12:28:13,959 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 291 transitions, 858 flow [2022-11-16 12:28:13,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 12:28:13,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 12:28:13,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5120 transitions. [2022-11-16 12:28:13,971 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8236808236808236 [2022-11-16 12:28:13,971 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5120 transitions. [2022-11-16 12:28:13,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5120 transitions. [2022-11-16 12:28:13,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:13,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5120 transitions. [2022-11-16 12:28:13,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 243.8095238095238) internal successors, (5120), 21 states have internal predecessors, (5120), 0 states have call successors, (0), 0 states 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 12:28:13,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 296.0) internal successors, (6512), 22 states have internal predecessors, (6512), 0 states have call successors, (0), 0 states 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 12:28:14,001 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 296.0) internal successors, (6512), 22 states have internal predecessors, (6512), 0 states have call successors, (0), 0 states 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 12:28:14,001 INFO L175 Difference]: Start difference. First operand has 266 places, 256 transitions, 594 flow. Second operand 21 states and 5120 transitions. [2022-11-16 12:28:14,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 291 transitions, 858 flow [2022-11-16 12:28:14,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 291 transitions, 850 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:28:14,009 INFO L231 Difference]: Finished difference. Result has 287 places, 269 transitions, 742 flow [2022-11-16 12:28:14,010 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=742, PETRI_PLACES=287, PETRI_TRANSITIONS=269} [2022-11-16 12:28:14,010 INFO L288 CegarLoopForPetriNet]: 252 programPoint places, 35 predicate places. [2022-11-16 12:28:14,011 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 269 transitions, 742 flow [2022-11-16 12:28:14,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 244.05555555555554) internal successors, (4393), 18 states have internal predecessors, (4393), 0 states have call successors, (0), 0 states 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 12:28:14,013 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:14,014 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:14,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:28:14,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-16 12:28:14,220 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-16 12:28:14,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:14,220 INFO L85 PathProgramCache]: Analyzing trace with hash -792104705, now seen corresponding path program 2 times [2022-11-16 12:28:14,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:14,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550907295] [2022-11-16 12:28:14,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:14,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:14,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:14,646 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:28:14,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:14,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550907295] [2022-11-16 12:28:14,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550907295] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:28:14,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813469974] [2022-11-16 12:28:14,648 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:28:14,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:14,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:28:14,649 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:28:14,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:28:14,763 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:28:14,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:28:14,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 12:28:14,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:14,906 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:28:14,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:28:15,146 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:28:15,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813469974] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:28:15,147 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:28:15,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-16 12:28:15,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108956165] [2022-11-16 12:28:15,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:28:15,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:28:15,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:15,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:28:15,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:28:15,156 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 296 [2022-11-16 12:28:15,170 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 269 transitions, 742 flow. Second operand has 23 states, 23 states have (on average 244.30434782608697) internal successors, (5619), 23 states have internal predecessors, (5619), 0 states have call successors, (0), 0 states 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 12:28:15,170 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:15,170 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 296 [2022-11-16 12:28:15,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:15,660 INFO L130 PetriNetUnfolder]: 6/316 cut-off events. [2022-11-16 12:28:15,660 INFO L131 PetriNetUnfolder]: For 224/224 co-relation queries the response was YES. [2022-11-16 12:28:15,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 572 conditions, 316 events. 6/316 cut-off events. For 224/224 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 813 event pairs, 0 based on Foata normal form. 3/293 useless extension candidates. Maximal degree in co-relation 334. Up to 12 conditions per place. [2022-11-16 12:28:15,665 INFO L137 encePairwiseOnDemand]: 290/296 looper letters, 46 selfloop transitions, 30 changer transitions 0/312 dead transitions. [2022-11-16 12:28:15,665 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 312 transitions, 1104 flow [2022-11-16 12:28:15,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-16 12:28:15,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-16 12:28:15,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 7309 transitions. [2022-11-16 12:28:15,679 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8230855855855855 [2022-11-16 12:28:15,680 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 7309 transitions. [2022-11-16 12:28:15,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 7309 transitions. [2022-11-16 12:28:15,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:15,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 7309 transitions. [2022-11-16 12:28:15,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 243.63333333333333) internal successors, (7309), 30 states have internal predecessors, (7309), 0 states have call successors, (0), 0 states 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 12:28:15,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 296.0) internal successors, (9176), 31 states have internal predecessors, (9176), 0 states have call successors, (0), 0 states 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 12:28:15,717 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 296.0) internal successors, (9176), 31 states have internal predecessors, (9176), 0 states have call successors, (0), 0 states 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 12:28:15,718 INFO L175 Difference]: Start difference. First operand has 287 places, 269 transitions, 742 flow. Second operand 30 states and 7309 transitions. [2022-11-16 12:28:15,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 312 transitions, 1104 flow [2022-11-16 12:28:15,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 312 transitions, 1024 flow, removed 32 selfloop flow, removed 8 redundant places. [2022-11-16 12:28:15,726 INFO L231 Difference]: Finished difference. Result has 312 places, 279 transitions, 840 flow [2022-11-16 12:28:15,727 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=686, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=840, PETRI_PLACES=312, PETRI_TRANSITIONS=279} [2022-11-16 12:28:15,728 INFO L288 CegarLoopForPetriNet]: 252 programPoint places, 60 predicate places. [2022-11-16 12:28:15,728 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 279 transitions, 840 flow [2022-11-16 12:28:15,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 244.30434782608697) internal successors, (5619), 23 states have internal predecessors, (5619), 0 states have call successors, (0), 0 states 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 12:28:15,730 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:15,730 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:15,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:28:15,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:15,936 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-16 12:28:15,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:15,936 INFO L85 PathProgramCache]: Analyzing trace with hash -62847603, now seen corresponding path program 3 times [2022-11-16 12:28:15,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:15,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622698077] [2022-11-16 12:28:15,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:15,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:15,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:28:15,968 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:28:15,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:28:16,030 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:28:16,031 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:28:16,032 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2022-11-16 12:28:16,034 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 29 remaining) [2022-11-16 12:28:16,035 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 29 remaining) [2022-11-16 12:28:16,035 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 29 remaining) [2022-11-16 12:28:16,035 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 29 remaining) [2022-11-16 12:28:16,038 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 29 remaining) [2022-11-16 12:28:16,038 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 29 remaining) [2022-11-16 12:28:16,038 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 29 remaining) [2022-11-16 12:28:16,039 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 29 remaining) [2022-11-16 12:28:16,039 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 29 remaining) [2022-11-16 12:28:16,039 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 29 remaining) [2022-11-16 12:28:16,039 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 29 remaining) [2022-11-16 12:28:16,040 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 29 remaining) [2022-11-16 12:28:16,040 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 29 remaining) [2022-11-16 12:28:16,040 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 29 remaining) [2022-11-16 12:28:16,040 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 29 remaining) [2022-11-16 12:28:16,041 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 29 remaining) [2022-11-16 12:28:16,041 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 29 remaining) [2022-11-16 12:28:16,041 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 29 remaining) [2022-11-16 12:28:16,041 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 29 remaining) [2022-11-16 12:28:16,041 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 29 remaining) [2022-11-16 12:28:16,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 29 remaining) [2022-11-16 12:28:16,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 29 remaining) [2022-11-16 12:28:16,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 29 remaining) [2022-11-16 12:28:16,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 29 remaining) [2022-11-16 12:28:16,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 29 remaining) [2022-11-16 12:28:16,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 29 remaining) [2022-11-16 12:28:16,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 29 remaining) [2022-11-16 12:28:16,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 29 remaining) [2022-11-16 12:28:16,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:28:16,044 INFO L444 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1] [2022-11-16 12:28:16,047 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 12:28:16,047 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-16 12:28:16,096 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 12:28:16,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 325 places, 380 transitions, 778 flow [2022-11-16 12:28:16,246 INFO L130 PetriNetUnfolder]: 118/731 cut-off events. [2022-11-16 12:28:16,247 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-16 12:28:16,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 745 conditions, 731 events. 118/731 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3938 event pairs, 0 based on Foata normal form. 0/555 useless extension candidates. Maximal degree in co-relation 455. Up to 12 conditions per place. [2022-11-16 12:28:16,258 INFO L82 GeneralOperation]: Start removeDead. Operand has 325 places, 380 transitions, 778 flow [2022-11-16 12:28:16,268 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 325 places, 380 transitions, 778 flow [2022-11-16 12:28:16,269 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:28:16,270 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;@1b425d2d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:28:16,270 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2022-11-16 12:28:16,273 INFO L130 PetriNetUnfolder]: 2/32 cut-off events. [2022-11-16 12:28:16,273 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:28:16,274 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:16,274 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] [2022-11-16 12:28:16,274 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-16 12:28:16,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:16,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1913492483, now seen corresponding path program 1 times [2022-11-16 12:28:16,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:16,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244775926] [2022-11-16 12:28:16,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:16,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:16,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:16,311 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 12:28:16,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:16,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244775926] [2022-11-16 12:28:16,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244775926] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:16,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:28:16,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:28:16,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050730923] [2022-11-16 12:28:16,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:16,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:28:16,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:16,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:28:16,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:28:16,315 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 380 [2022-11-16 12:28:16,317 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 380 transitions, 778 flow. Second operand has 4 states, 4 states have (on average 311.5) internal successors, (1246), 4 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states 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 12:28:16,317 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:16,317 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 380 [2022-11-16 12:28:16,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:16,466 INFO L130 PetriNetUnfolder]: 17/629 cut-off events. [2022-11-16 12:28:16,467 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-11-16 12:28:16,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 669 conditions, 629 events. 17/629 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3350 event pairs, 0 based on Foata normal form. 126/672 useless extension candidates. Maximal degree in co-relation 415. Up to 19 conditions per place. [2022-11-16 12:28:16,479 INFO L137 encePairwiseOnDemand]: 323/380 looper letters, 19 selfloop transitions, 4 changer transitions 0/333 dead transitions. [2022-11-16 12:28:16,479 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 333 transitions, 730 flow [2022-11-16 12:28:16,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:28:16,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:28:16,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1627 transitions. [2022-11-16 12:28:16,483 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8563157894736843 [2022-11-16 12:28:16,483 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1627 transitions. [2022-11-16 12:28:16,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1627 transitions. [2022-11-16 12:28:16,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:16,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1627 transitions. [2022-11-16 12:28:16,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 325.4) internal successors, (1627), 5 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states 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 12:28:16,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 380.0) internal successors, (2280), 6 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states 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 12:28:16,492 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 380.0) internal successors, (2280), 6 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states 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 12:28:16,492 INFO L175 Difference]: Start difference. First operand has 325 places, 380 transitions, 778 flow. Second operand 5 states and 1627 transitions. [2022-11-16 12:28:16,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 333 transitions, 730 flow [2022-11-16 12:28:16,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 333 transitions, 730 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:28:16,499 INFO L231 Difference]: Finished difference. Result has 328 places, 329 transitions, 702 flow [2022-11-16 12:28:16,500 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=702, PETRI_PLACES=328, PETRI_TRANSITIONS=329} [2022-11-16 12:28:16,500 INFO L288 CegarLoopForPetriNet]: 325 programPoint places, 3 predicate places. [2022-11-16 12:28:16,501 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 329 transitions, 702 flow [2022-11-16 12:28:16,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 311.5) internal successors, (1246), 4 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states 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 12:28:16,501 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:16,502 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:16,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:28:16,502 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-16 12:28:16,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:16,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1736378411, now seen corresponding path program 1 times [2022-11-16 12:28:16,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:16,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261058524] [2022-11-16 12:28:16,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:16,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:16,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:16,552 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:28:16,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:16,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261058524] [2022-11-16 12:28:16,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261058524] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:16,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:28:16,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:28:16,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610697516] [2022-11-16 12:28:16,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:16,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:28:16,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:16,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:28:16,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:28:16,557 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 380 [2022-11-16 12:28:16,558 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 329 transitions, 702 flow. Second operand has 4 states, 4 states have (on average 313.25) internal successors, (1253), 4 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states 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 12:28:16,558 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:16,558 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 380 [2022-11-16 12:28:16,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:16,714 INFO L130 PetriNetUnfolder]: 17/628 cut-off events. [2022-11-16 12:28:16,715 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-11-16 12:28:16,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 683 conditions, 628 events. 17/628 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3351 event pairs, 0 based on Foata normal form. 1/549 useless extension candidates. Maximal degree in co-relation 629. Up to 11 conditions per place. [2022-11-16 12:28:16,728 INFO L137 encePairwiseOnDemand]: 374/380 looper letters, 11 selfloop transitions, 8 changer transitions 0/329 dead transitions. [2022-11-16 12:28:16,728 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 329 transitions, 738 flow [2022-11-16 12:28:16,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:28:16,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:28:16,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1567 transitions. [2022-11-16 12:28:16,733 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8247368421052632 [2022-11-16 12:28:16,733 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1567 transitions. [2022-11-16 12:28:16,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1567 transitions. [2022-11-16 12:28:16,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:16,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1567 transitions. [2022-11-16 12:28:16,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 313.4) internal successors, (1567), 5 states have internal predecessors, (1567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:16,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 380.0) internal successors, (2280), 6 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states 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 12:28:16,743 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 380.0) internal successors, (2280), 6 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states 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 12:28:16,743 INFO L175 Difference]: Start difference. First operand has 328 places, 329 transitions, 702 flow. Second operand 5 states and 1567 transitions. [2022-11-16 12:28:16,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 329 transitions, 738 flow [2022-11-16 12:28:16,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 329 transitions, 736 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:28:16,751 INFO L231 Difference]: Finished difference. Result has 331 places, 329 transitions, 720 flow [2022-11-16 12:28:16,752 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=696, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=720, PETRI_PLACES=331, PETRI_TRANSITIONS=329} [2022-11-16 12:28:16,752 INFO L288 CegarLoopForPetriNet]: 325 programPoint places, 6 predicate places. [2022-11-16 12:28:16,753 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 329 transitions, 720 flow [2022-11-16 12:28:16,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 313.25) internal successors, (1253), 4 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states 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 12:28:16,753 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:16,754 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:16,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:28:16,754 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-16 12:28:16,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:16,755 INFO L85 PathProgramCache]: Analyzing trace with hash 2006845253, now seen corresponding path program 1 times [2022-11-16 12:28:16,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:16,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643165052] [2022-11-16 12:28:16,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:16,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:16,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:16,822 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:28:16,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:16,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643165052] [2022-11-16 12:28:16,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643165052] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:28:16,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294036565] [2022-11-16 12:28:16,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:16,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:16,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:28:16,826 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:28:16,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:28:16,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:16,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:28:16,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:16,976 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:28:16,977 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:28:16,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294036565] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:16,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:28:16,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-16 12:28:16,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639747476] [2022-11-16 12:28:16,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:16,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:28:16,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:16,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:28:16,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:28:16,984 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 380 [2022-11-16 12:28:16,986 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 329 transitions, 720 flow. Second operand has 5 states, 5 states have (on average 312.8) internal successors, (1564), 5 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states 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 12:28:16,986 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:16,986 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 380 [2022-11-16 12:28:16,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:17,143 INFO L130 PetriNetUnfolder]: 17/627 cut-off events. [2022-11-16 12:28:17,144 INFO L131 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2022-11-16 12:28:17,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 690 conditions, 627 events. 17/627 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3337 event pairs, 0 based on Foata normal form. 1/548 useless extension candidates. Maximal degree in co-relation 627. Up to 14 conditions per place. [2022-11-16 12:28:17,153 INFO L137 encePairwiseOnDemand]: 376/380 looper letters, 13 selfloop transitions, 5 changer transitions 0/328 dead transitions. [2022-11-16 12:28:17,154 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 328 transitions, 752 flow [2022-11-16 12:28:17,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:28:17,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:28:17,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1255 transitions. [2022-11-16 12:28:17,158 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8256578947368421 [2022-11-16 12:28:17,158 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1255 transitions. [2022-11-16 12:28:17,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1255 transitions. [2022-11-16 12:28:17,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:17,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1255 transitions. [2022-11-16 12:28:17,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 313.75) internal successors, (1255), 4 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states 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 12:28:17,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 380.0) internal successors, (1900), 5 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states 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 12:28:17,165 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 380.0) internal successors, (1900), 5 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states 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 12:28:17,165 INFO L175 Difference]: Start difference. First operand has 331 places, 329 transitions, 720 flow. Second operand 4 states and 1255 transitions. [2022-11-16 12:28:17,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 328 transitions, 752 flow [2022-11-16 12:28:17,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 328 transitions, 740 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:28:17,171 INFO L231 Difference]: Finished difference. Result has 330 places, 328 transitions, 714 flow [2022-11-16 12:28:17,173 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=704, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=714, PETRI_PLACES=330, PETRI_TRANSITIONS=328} [2022-11-16 12:28:17,174 INFO L288 CegarLoopForPetriNet]: 325 programPoint places, 5 predicate places. [2022-11-16 12:28:17,174 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 328 transitions, 714 flow [2022-11-16 12:28:17,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 312.8) internal successors, (1564), 5 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states 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 12:28:17,175 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:17,175 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] [2022-11-16 12:28:17,194 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-16 12:28:17,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:17,381 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-16 12:28:17,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:17,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1200530405, now seen corresponding path program 1 times [2022-11-16 12:28:17,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:17,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019461851] [2022-11-16 12:28:17,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:17,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:17,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:17,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:28:17,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:17,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019461851] [2022-11-16 12:28:17,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019461851] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:28:17,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655189151] [2022-11-16 12:28:17,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:17,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:17,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:28:17,449 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:28:17,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:28:17,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:17,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:28:17,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:17,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:28:17,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:28:17,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:28:17,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655189151] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:28:17,617 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:28:17,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 12:28:17,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155256292] [2022-11-16 12:28:17,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:28:17,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:28:17,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:17,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:28:17,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:28:17,622 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 380 [2022-11-16 12:28:17,625 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 328 transitions, 714 flow. Second operand has 10 states, 10 states have (on average 312.7) internal successors, (3127), 10 states have internal predecessors, (3127), 0 states have call successors, (0), 0 states 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 12:28:17,625 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:17,625 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 380 [2022-11-16 12:28:17,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:17,817 INFO L130 PetriNetUnfolder]: 17/635 cut-off events. [2022-11-16 12:28:17,817 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2022-11-16 12:28:17,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 714 conditions, 635 events. 17/635 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3323 event pairs, 0 based on Foata normal form. 2/557 useless extension candidates. Maximal degree in co-relation 617. Up to 11 conditions per place. [2022-11-16 12:28:17,829 INFO L137 encePairwiseOnDemand]: 374/380 looper letters, 20 selfloop transitions, 9 changer transitions 0/339 dead transitions. [2022-11-16 12:28:17,829 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 339 transitions, 810 flow [2022-11-16 12:28:17,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:28:17,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:28:17,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2821 transitions. [2022-11-16 12:28:17,842 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8248538011695906 [2022-11-16 12:28:17,842 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2821 transitions. [2022-11-16 12:28:17,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2821 transitions. [2022-11-16 12:28:17,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:17,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2821 transitions. [2022-11-16 12:28:17,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 313.44444444444446) internal successors, (2821), 9 states have internal predecessors, (2821), 0 states have call successors, (0), 0 states 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 12:28:17,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 380.0) internal successors, (3800), 10 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states 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 12:28:17,858 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 380.0) internal successors, (3800), 10 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states 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 12:28:17,858 INFO L175 Difference]: Start difference. First operand has 330 places, 328 transitions, 714 flow. Second operand 9 states and 2821 transitions. [2022-11-16 12:28:17,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 339 transitions, 810 flow [2022-11-16 12:28:17,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 339 transitions, 796 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:28:17,897 INFO L231 Difference]: Finished difference. Result has 339 places, 332 transitions, 760 flow [2022-11-16 12:28:17,898 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=704, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=760, PETRI_PLACES=339, PETRI_TRANSITIONS=332} [2022-11-16 12:28:17,898 INFO L288 CegarLoopForPetriNet]: 325 programPoint places, 14 predicate places. [2022-11-16 12:28:17,899 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 332 transitions, 760 flow [2022-11-16 12:28:17,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 312.7) internal successors, (3127), 10 states have internal predecessors, (3127), 0 states have call successors, (0), 0 states 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 12:28:17,900 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:17,900 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:28:17,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:28:18,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-16 12:28:18,105 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-16 12:28:18,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:18,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1612147803, now seen corresponding path program 2 times [2022-11-16 12:28:18,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:18,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828141384] [2022-11-16 12:28:18,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:18,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:18,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:18,167 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 12:28:18,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:18,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828141384] [2022-11-16 12:28:18,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828141384] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:18,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:28:18,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:28:18,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835421838] [2022-11-16 12:28:18,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:18,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:28:18,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:18,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:28:18,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:28:18,171 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 380 [2022-11-16 12:28:18,172 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 332 transitions, 760 flow. Second operand has 4 states, 4 states have (on average 311.75) internal successors, (1247), 4 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states 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 12:28:18,172 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:18,172 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 380 [2022-11-16 12:28:18,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:18,317 INFO L130 PetriNetUnfolder]: 13/516 cut-off events. [2022-11-16 12:28:18,317 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2022-11-16 12:28:18,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 608 conditions, 516 events. 13/516 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2446 event pairs, 0 based on Foata normal form. 0/454 useless extension candidates. Maximal degree in co-relation 520. Up to 21 conditions per place. [2022-11-16 12:28:18,328 INFO L137 encePairwiseOnDemand]: 373/380 looper letters, 19 selfloop transitions, 4 changer transitions 0/339 dead transitions. [2022-11-16 12:28:18,328 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 339 transitions, 820 flow [2022-11-16 12:28:18,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:28:18,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:28:18,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1576 transitions. [2022-11-16 12:28:18,332 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8294736842105264 [2022-11-16 12:28:18,332 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1576 transitions. [2022-11-16 12:28:18,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1576 transitions. [2022-11-16 12:28:18,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:18,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1576 transitions. [2022-11-16 12:28:18,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 315.2) internal successors, (1576), 5 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:18,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 380.0) internal successors, (2280), 6 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states 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 12:28:18,340 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 380.0) internal successors, (2280), 6 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states 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 12:28:18,340 INFO L175 Difference]: Start difference. First operand has 339 places, 332 transitions, 760 flow. Second operand 5 states and 1576 transitions. [2022-11-16 12:28:18,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 339 transitions, 820 flow [2022-11-16 12:28:18,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 339 transitions, 804 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-11-16 12:28:18,347 INFO L231 Difference]: Finished difference. Result has 342 places, 335 transitions, 776 flow [2022-11-16 12:28:18,348 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=744, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=776, PETRI_PLACES=342, PETRI_TRANSITIONS=335} [2022-11-16 12:28:18,349 INFO L288 CegarLoopForPetriNet]: 325 programPoint places, 17 predicate places. [2022-11-16 12:28:18,349 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 335 transitions, 776 flow [2022-11-16 12:28:18,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 311.75) internal successors, (1247), 4 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states 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 12:28:18,349 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:18,350 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:18,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 12:28:18,350 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-16 12:28:18,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:18,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1725951910, now seen corresponding path program 1 times [2022-11-16 12:28:18,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:18,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188318300] [2022-11-16 12:28:18,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:18,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:18,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:18,411 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-16 12:28:18,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:18,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188318300] [2022-11-16 12:28:18,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188318300] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:18,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:28:18,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:28:18,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397292646] [2022-11-16 12:28:18,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:18,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:28:18,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:18,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:28:18,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:28:18,416 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 380 [2022-11-16 12:28:18,417 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 335 transitions, 776 flow. Second operand has 4 states, 4 states have (on average 313.75) internal successors, (1255), 4 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states 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 12:28:18,417 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:18,417 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 380 [2022-11-16 12:28:18,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:18,595 INFO L130 PetriNetUnfolder]: 13/515 cut-off events. [2022-11-16 12:28:18,596 INFO L131 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2022-11-16 12:28:18,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 614 conditions, 515 events. 13/515 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2447 event pairs, 0 based on Foata normal form. 1/458 useless extension candidates. Maximal degree in co-relation 527. Up to 10 conditions per place. [2022-11-16 12:28:18,614 INFO L137 encePairwiseOnDemand]: 374/380 looper letters, 11 selfloop transitions, 8 changer transitions 0/335 dead transitions. [2022-11-16 12:28:18,614 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 335 transitions, 812 flow [2022-11-16 12:28:18,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:28:18,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:28:18,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1567 transitions. [2022-11-16 12:28:18,618 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8247368421052632 [2022-11-16 12:28:18,618 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1567 transitions. [2022-11-16 12:28:18,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1567 transitions. [2022-11-16 12:28:18,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:18,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1567 transitions. [2022-11-16 12:28:18,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 313.4) internal successors, (1567), 5 states have internal predecessors, (1567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:18,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 380.0) internal successors, (2280), 6 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states 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 12:28:18,627 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 380.0) internal successors, (2280), 6 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states 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 12:28:18,627 INFO L175 Difference]: Start difference. First operand has 342 places, 335 transitions, 776 flow. Second operand 5 states and 1567 transitions. [2022-11-16 12:28:18,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 335 transitions, 812 flow [2022-11-16 12:28:18,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 335 transitions, 810 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:28:18,636 INFO L231 Difference]: Finished difference. Result has 345 places, 335 transitions, 794 flow [2022-11-16 12:28:18,637 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=770, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=794, PETRI_PLACES=345, PETRI_TRANSITIONS=335} [2022-11-16 12:28:18,638 INFO L288 CegarLoopForPetriNet]: 325 programPoint places, 20 predicate places. [2022-11-16 12:28:18,638 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 335 transitions, 794 flow [2022-11-16 12:28:18,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 313.75) internal successors, (1255), 4 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states 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 12:28:18,639 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:18,639 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:18,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 12:28:18,640 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-16 12:28:18,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:18,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1964902600, now seen corresponding path program 1 times [2022-11-16 12:28:18,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:18,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542748770] [2022-11-16 12:28:18,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:18,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:18,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:18,803 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 12:28:18,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:18,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542748770] [2022-11-16 12:28:18,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542748770] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:28:18,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989024376] [2022-11-16 12:28:18,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:18,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:18,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:28:18,805 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:28:18,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 12:28:18,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:18,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:28:18,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:18,980 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 12:28:18,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:28:19,078 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 12:28:19,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989024376] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:28:19,079 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:28:19,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-16 12:28:19,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239441260] [2022-11-16 12:28:19,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:28:19,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:28:19,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:19,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:28:19,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:28:19,085 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 380 [2022-11-16 12:28:19,090 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 335 transitions, 794 flow. Second operand has 18 states, 18 states have (on average 313.1111111111111) internal successors, (5636), 18 states have internal predecessors, (5636), 0 states have call successors, (0), 0 states 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 12:28:19,090 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:19,090 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 380 [2022-11-16 12:28:19,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:19,441 INFO L130 PetriNetUnfolder]: 13/543 cut-off events. [2022-11-16 12:28:19,441 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2022-11-16 12:28:19,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 726 conditions, 543 events. 13/543 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2440 event pairs, 0 based on Foata normal form. 4/489 useless extension candidates. Maximal degree in co-relation 521. Up to 11 conditions per place. [2022-11-16 12:28:19,451 INFO L137 encePairwiseOnDemand]: 374/380 looper letters, 36 selfloop transitions, 21 changer transitions 0/370 dead transitions. [2022-11-16 12:28:19,451 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 370 transitions, 1062 flow [2022-11-16 12:28:19,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 12:28:19,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 12:28:19,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 6571 transitions. [2022-11-16 12:28:19,460 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8234335839598997 [2022-11-16 12:28:19,460 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 6571 transitions. [2022-11-16 12:28:19,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 6571 transitions. [2022-11-16 12:28:19,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:19,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 6571 transitions. [2022-11-16 12:28:19,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 312.9047619047619) internal successors, (6571), 21 states have internal predecessors, (6571), 0 states have call successors, (0), 0 states 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 12:28:19,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 380.0) internal successors, (8360), 22 states have internal predecessors, (8360), 0 states have call successors, (0), 0 states 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 12:28:19,486 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 380.0) internal successors, (8360), 22 states have internal predecessors, (8360), 0 states have call successors, (0), 0 states 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 12:28:19,487 INFO L175 Difference]: Start difference. First operand has 345 places, 335 transitions, 794 flow. Second operand 21 states and 6571 transitions. [2022-11-16 12:28:19,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 370 transitions, 1062 flow [2022-11-16 12:28:19,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 370 transitions, 1050 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:28:19,494 INFO L231 Difference]: Finished difference. Result has 367 places, 348 transitions, 938 flow [2022-11-16 12:28:19,495 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=782, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=938, PETRI_PLACES=367, PETRI_TRANSITIONS=348} [2022-11-16 12:28:19,495 INFO L288 CegarLoopForPetriNet]: 325 programPoint places, 42 predicate places. [2022-11-16 12:28:19,495 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 348 transitions, 938 flow [2022-11-16 12:28:19,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 313.1111111111111) internal successors, (5636), 18 states have internal predecessors, (5636), 0 states have call successors, (0), 0 states 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 12:28:19,497 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:19,497 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:19,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 12:28:19,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-16 12:28:19,702 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-16 12:28:19,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:19,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1743582904, now seen corresponding path program 2 times [2022-11-16 12:28:19,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:19,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266880109] [2022-11-16 12:28:19,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:19,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:19,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:20,053 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 12:28:20,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:20,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266880109] [2022-11-16 12:28:20,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266880109] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:28:20,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468039632] [2022-11-16 12:28:20,056 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:28:20,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:20,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:28:20,058 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:28:20,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 12:28:20,185 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:28:20,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:28:20,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 12:28:20,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:20,298 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 12:28:20,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:28:20,566 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 12:28:20,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468039632] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:28:20,567 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:28:20,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-16 12:28:20,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791503235] [2022-11-16 12:28:20,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:28:20,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:28:20,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:20,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:28:20,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:28:20,576 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 380 [2022-11-16 12:28:20,582 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 348 transitions, 938 flow. Second operand has 23 states, 23 states have (on average 313.3478260869565) internal successors, (7207), 23 states have internal predecessors, (7207), 0 states have call successors, (0), 0 states 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 12:28:20,583 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:20,583 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 380 [2022-11-16 12:28:20,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:21,103 INFO L130 PetriNetUnfolder]: 13/564 cut-off events. [2022-11-16 12:28:21,104 INFO L131 PetriNetUnfolder]: For 241/241 co-relation queries the response was YES. [2022-11-16 12:28:21,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 851 conditions, 564 events. 13/564 cut-off events. For 241/241 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2440 event pairs, 0 based on Foata normal form. 3/509 useless extension candidates. Maximal degree in co-relation 575. Up to 12 conditions per place. [2022-11-16 12:28:21,116 INFO L137 encePairwiseOnDemand]: 374/380 looper letters, 48 selfloop transitions, 30 changer transitions 0/391 dead transitions. [2022-11-16 12:28:21,116 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 391 transitions, 1304 flow [2022-11-16 12:28:21,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-16 12:28:21,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-16 12:28:21,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 9381 transitions. [2022-11-16 12:28:21,129 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8228947368421052 [2022-11-16 12:28:21,130 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 9381 transitions. [2022-11-16 12:28:21,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 9381 transitions. [2022-11-16 12:28:21,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:21,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 9381 transitions. [2022-11-16 12:28:21,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 312.7) internal successors, (9381), 30 states have internal predecessors, (9381), 0 states have call successors, (0), 0 states 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 12:28:21,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 380.0) internal successors, (11780), 31 states have internal predecessors, (11780), 0 states have call successors, (0), 0 states 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 12:28:21,167 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 380.0) internal successors, (11780), 31 states have internal predecessors, (11780), 0 states have call successors, (0), 0 states 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 12:28:21,167 INFO L175 Difference]: Start difference. First operand has 367 places, 348 transitions, 938 flow. Second operand 30 states and 9381 transitions. [2022-11-16 12:28:21,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 391 transitions, 1304 flow [2022-11-16 12:28:21,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 391 transitions, 1224 flow, removed 32 selfloop flow, removed 8 redundant places. [2022-11-16 12:28:21,177 INFO L231 Difference]: Finished difference. Result has 392 places, 358 transitions, 1036 flow [2022-11-16 12:28:21,178 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=882, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1036, PETRI_PLACES=392, PETRI_TRANSITIONS=358} [2022-11-16 12:28:21,178 INFO L288 CegarLoopForPetriNet]: 325 programPoint places, 67 predicate places. [2022-11-16 12:28:21,178 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 358 transitions, 1036 flow [2022-11-16 12:28:21,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 313.3478260869565) internal successors, (7207), 23 states have internal predecessors, (7207), 0 states have call successors, (0), 0 states 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 12:28:21,181 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:21,181 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:21,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 12:28:21,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 12:28:21,387 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-16 12:28:21,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:21,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1305508618, now seen corresponding path program 3 times [2022-11-16 12:28:21,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:21,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206734575] [2022-11-16 12:28:21,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:21,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:21,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:21,529 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 12:28:21,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:21,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206734575] [2022-11-16 12:28:21,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206734575] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:28:21,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209642280] [2022-11-16 12:28:21,530 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:28:21,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:21,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:28:21,531 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:28:21,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 12:28:21,650 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-16 12:28:21,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:28:21,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:28:21,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:21,700 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 12:28:21,700 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:28:21,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209642280] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:21,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:28:21,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-16 12:28:21,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710616897] [2022-11-16 12:28:21,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:21,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:28:21,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:21,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:28:21,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:28:21,705 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 380 [2022-11-16 12:28:21,707 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 358 transitions, 1036 flow. Second operand has 5 states, 5 states have (on average 313.2) internal successors, (1566), 5 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states 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 12:28:21,707 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:21,707 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 380 [2022-11-16 12:28:21,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:21,884 INFO L130 PetriNetUnfolder]: 13/563 cut-off events. [2022-11-16 12:28:21,885 INFO L131 PetriNetUnfolder]: For 204/204 co-relation queries the response was YES. [2022-11-16 12:28:21,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 800 conditions, 563 events. 13/563 cut-off events. For 204/204 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2437 event pairs, 0 based on Foata normal form. 1/506 useless extension candidates. Maximal degree in co-relation 536. Up to 17 conditions per place. [2022-11-16 12:28:21,899 INFO L137 encePairwiseOnDemand]: 376/380 looper letters, 13 selfloop transitions, 5 changer transitions 0/357 dead transitions. [2022-11-16 12:28:21,900 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 357 transitions, 1068 flow [2022-11-16 12:28:21,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:28:21,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:28:21,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1255 transitions. [2022-11-16 12:28:21,902 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8256578947368421 [2022-11-16 12:28:21,902 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1255 transitions. [2022-11-16 12:28:21,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1255 transitions. [2022-11-16 12:28:21,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:21,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1255 transitions. [2022-11-16 12:28:21,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 313.75) internal successors, (1255), 4 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states 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 12:28:21,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 380.0) internal successors, (1900), 5 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states 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 12:28:21,912 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 380.0) internal successors, (1900), 5 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states 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 12:28:21,912 INFO L175 Difference]: Start difference. First operand has 392 places, 358 transitions, 1036 flow. Second operand 4 states and 1255 transitions. [2022-11-16 12:28:21,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 357 transitions, 1068 flow [2022-11-16 12:28:21,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 357 transitions, 1022 flow, removed 5 selfloop flow, removed 18 redundant places. [2022-11-16 12:28:21,921 INFO L231 Difference]: Finished difference. Result has 376 places, 357 transitions, 996 flow [2022-11-16 12:28:21,922 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=986, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=996, PETRI_PLACES=376, PETRI_TRANSITIONS=357} [2022-11-16 12:28:21,922 INFO L288 CegarLoopForPetriNet]: 325 programPoint places, 51 predicate places. [2022-11-16 12:28:21,922 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 357 transitions, 996 flow [2022-11-16 12:28:21,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 313.2) internal successors, (1566), 5 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states 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 12:28:21,923 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:21,924 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:28:21,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 12:28:22,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-16 12:28:22,129 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-16 12:28:22,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:22,129 INFO L85 PathProgramCache]: Analyzing trace with hash -630712475, now seen corresponding path program 1 times [2022-11-16 12:28:22,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:22,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468892641] [2022-11-16 12:28:22,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:22,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:22,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:22,658 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 12:28:22,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:22,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468892641] [2022-11-16 12:28:22,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468892641] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:22,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:28:22,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:28:22,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182384039] [2022-11-16 12:28:22,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:22,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 12:28:22,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:22,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 12:28:22,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:28:22,664 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 380 [2022-11-16 12:28:22,667 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 357 transitions, 996 flow. Second operand has 11 states, 11 states have (on average 267.3636363636364) internal successors, (2941), 11 states have internal predecessors, (2941), 0 states have call successors, (0), 0 states 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 12:28:22,667 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:22,667 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 380 [2022-11-16 12:28:22,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:33,194 INFO L130 PetriNetUnfolder]: 12171/46062 cut-off events. [2022-11-16 12:28:33,194 INFO L131 PetriNetUnfolder]: For 782/793 co-relation queries the response was YES. [2022-11-16 12:28:33,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64256 conditions, 46062 events. 12171/46062 cut-off events. For 782/793 co-relation queries the response was YES. Maximal size of possible extension queue 1359. Compared 645557 event pairs, 2111 based on Foata normal form. 1/40203 useless extension candidates. Maximal degree in co-relation 63989. Up to 9013 conditions per place. [2022-11-16 12:28:33,740 INFO L137 encePairwiseOnDemand]: 360/380 looper letters, 342 selfloop transitions, 71 changer transitions 0/709 dead transitions. [2022-11-16 12:28:33,740 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 709 transitions, 2607 flow [2022-11-16 12:28:33,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 12:28:33,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-16 12:28:33,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 6785 transitions. [2022-11-16 12:28:33,751 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7439692982456141 [2022-11-16 12:28:33,751 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 6785 transitions. [2022-11-16 12:28:33,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 6785 transitions. [2022-11-16 12:28:33,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:33,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 6785 transitions. [2022-11-16 12:28:33,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 282.7083333333333) internal successors, (6785), 24 states have internal predecessors, (6785), 0 states have call successors, (0), 0 states 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 12:28:33,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 380.0) internal successors, (9500), 25 states have internal predecessors, (9500), 0 states have call successors, (0), 0 states 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 12:28:33,780 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 380.0) internal successors, (9500), 25 states have internal predecessors, (9500), 0 states have call successors, (0), 0 states 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 12:28:33,780 INFO L175 Difference]: Start difference. First operand has 376 places, 357 transitions, 996 flow. Second operand 24 states and 6785 transitions. [2022-11-16 12:28:33,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 709 transitions, 2607 flow [2022-11-16 12:28:33,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 709 transitions, 2597 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:28:33,799 INFO L231 Difference]: Finished difference. Result has 414 places, 443 transitions, 1554 flow [2022-11-16 12:28:33,799 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=986, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1554, PETRI_PLACES=414, PETRI_TRANSITIONS=443} [2022-11-16 12:28:33,800 INFO L288 CegarLoopForPetriNet]: 325 programPoint places, 89 predicate places. [2022-11-16 12:28:33,800 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 443 transitions, 1554 flow [2022-11-16 12:28:33,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 267.3636363636364) internal successors, (2941), 11 states have internal predecessors, (2941), 0 states have call successors, (0), 0 states 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 12:28:33,801 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:33,801 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:28:33,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 12:28:33,802 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-16 12:28:33,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:33,802 INFO L85 PathProgramCache]: Analyzing trace with hash -954203115, now seen corresponding path program 1 times [2022-11-16 12:28:33,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:33,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142129576] [2022-11-16 12:28:33,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:33,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:33,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:33,915 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 12:28:33,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:33,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142129576] [2022-11-16 12:28:33,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142129576] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:28:33,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152239537] [2022-11-16 12:28:33,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:33,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:33,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:28:33,917 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:28:33,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 12:28:34,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:34,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 12:28:34,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:34,077 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2022-11-16 12:28:34,077 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:28:34,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152239537] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:34,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:28:34,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-16 12:28:34,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457834030] [2022-11-16 12:28:34,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:34,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:28:34,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:34,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:28:34,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:28:34,080 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 380 [2022-11-16 12:28:34,081 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 443 transitions, 1554 flow. Second operand has 3 states, 3 states have (on average 315.6666666666667) internal successors, (947), 3 states have internal predecessors, (947), 0 states have call successors, (0), 0 states 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 12:28:34,082 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:34,082 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 380 [2022-11-16 12:28:34,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:35,484 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1318] t_funEXIT-->L958-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem58#1_7| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread1of2ForFork0_thidvar0_4) InVars {t_funThread1of2ForFork0_thidvar0=v_t_funThread1of2ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem58#1=|v_ULTIMATE.start_main_#t~mem58#1_7|} OutVars{t_funThread1of2ForFork0_thidvar0=v_t_funThread1of2ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem58#1=|v_ULTIMATE.start_main_#t~mem58#1_7|} AuxVars[] AssignedVars[][383], [Black: 764#(<= |ULTIMATE.start_main_~i~1#1| 3), Black: 1069#(< |ULTIMATE.start_main_~i~1#1| 9), 338#true, 1218#true, t_funThread1of2ForFork0NotInUse, Black: 1234#(<= |ULTIMATE.start_main_~i~1#1| 7), t_funThread2of2ForFork0NotInUse, Black: 1623#(< |ULTIMATE.start_main_~i~1#1| 9), Black: 1606#(< |ULTIMATE.start_main_~i~1#1| 10), Black: 330#(= |ULTIMATE.start_main_~i~1#1| 0), 2234#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1)), 2299#true, Black: 466#(<= |ULTIMATE.start_main_~i~1#1| 1), Black: 634#(< |ULTIMATE.start_main_~i~1#1| 10), 132#L958-5true, 756#true, 462#true, Black: 739#(= |ULTIMATE.start_main_~i~3#1| 0), Black: 2247#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 740#(= 0 |ULTIMATE.start_main_#t~post43#1|), Black: 742#(and (= 0 |ULTIMATE.start_main_#t~post43#1|) (= |ULTIMATE.start_main_~i~3#1| 0)), Black: 2257#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2273#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|)) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), 747#true, Black: 2251#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|)) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2243#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2265#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2249#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2235#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2245#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2259#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2271#(and (= 3 |~#cache~0.base|) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2263#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|)), Black: 2269#(and (= 3 |~#cache~0.base|) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2279#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|)) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2255#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|)) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2253#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2261#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 1092#(< |ULTIMATE.start_main_~i~1#1| 8), Black: 1052#(< |ULTIMATE.start_main_~i~1#1| 10)]) [2022-11-16 12:28:35,484 INFO L383 tUnfolder$Statistics]: this new event has 225 ancestors and is cut-off event [2022-11-16 12:28:35,484 INFO L386 tUnfolder$Statistics]: existing Event has 213 ancestors and is cut-off event [2022-11-16 12:28:35,484 INFO L386 tUnfolder$Statistics]: existing Event has 183 ancestors and is cut-off event [2022-11-16 12:28:35,485 INFO L386 tUnfolder$Statistics]: existing Event has 213 ancestors and is cut-off event [2022-11-16 12:28:35,903 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1318] t_funEXIT-->L958-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem58#1_7| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread1of2ForFork0_thidvar0_4) InVars {t_funThread1of2ForFork0_thidvar0=v_t_funThread1of2ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem58#1=|v_ULTIMATE.start_main_#t~mem58#1_7|} OutVars{t_funThread1of2ForFork0_thidvar0=v_t_funThread1of2ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem58#1=|v_ULTIMATE.start_main_#t~mem58#1_7|} AuxVars[] AssignedVars[][383], [Black: 764#(<= |ULTIMATE.start_main_~i~1#1| 3), Black: 1069#(< |ULTIMATE.start_main_~i~1#1| 9), 338#true, 1218#true, t_funThread1of2ForFork0NotInUse, Black: 1234#(<= |ULTIMATE.start_main_~i~1#1| 7), 20#t_funENTRYtrue, Black: 1623#(< |ULTIMATE.start_main_~i~1#1| 9), t_funThread2of2ForFork0InUse, Black: 1606#(< |ULTIMATE.start_main_~i~1#1| 10), Black: 330#(= |ULTIMATE.start_main_~i~1#1| 0), 2234#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1)), 2299#true, Black: 466#(<= |ULTIMATE.start_main_~i~1#1| 1), Black: 634#(< |ULTIMATE.start_main_~i~1#1| 10), 132#L958-5true, 756#true, 462#true, Black: 739#(= |ULTIMATE.start_main_~i~3#1| 0), Black: 740#(= 0 |ULTIMATE.start_main_#t~post43#1|), Black: 2247#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 742#(and (= 0 |ULTIMATE.start_main_#t~post43#1|) (= |ULTIMATE.start_main_~i~3#1| 0)), Black: 2257#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2273#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|)) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2251#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|)) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), 747#true, Black: 2243#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2265#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2249#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2235#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2245#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2259#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2271#(and (= 3 |~#cache~0.base|) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2263#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|)), Black: 2269#(and (= 3 |~#cache~0.base|) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2279#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|)) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2255#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|)) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2253#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2261#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 1092#(< |ULTIMATE.start_main_~i~1#1| 8), Black: 1052#(< |ULTIMATE.start_main_~i~1#1| 10)]) [2022-11-16 12:28:35,904 INFO L383 tUnfolder$Statistics]: this new event has 237 ancestors and is cut-off event [2022-11-16 12:28:35,904 INFO L386 tUnfolder$Statistics]: existing Event has 195 ancestors and is cut-off event [2022-11-16 12:28:35,904 INFO L386 tUnfolder$Statistics]: existing Event has 225 ancestors and is cut-off event [2022-11-16 12:28:35,904 INFO L386 tUnfolder$Statistics]: existing Event has 225 ancestors and is cut-off event [2022-11-16 12:28:36,120 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1319] t_funEXIT-->L958-5: Formula: (= v_t_funThread2of2ForFork0_thidvar0_4 (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem58#1_9| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296))))) InVars {ULTIMATE.start_main_#t~mem58#1=|v_ULTIMATE.start_main_#t~mem58#1_9|, t_funThread2of2ForFork0_thidvar0=v_t_funThread2of2ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem58#1=|v_ULTIMATE.start_main_#t~mem58#1_9|, t_funThread2of2ForFork0_thidvar0=v_t_funThread2of2ForFork0_thidvar0_4} AuxVars[] AssignedVars[][416], [Black: 764#(<= |ULTIMATE.start_main_~i~1#1| 3), Black: 1069#(< |ULTIMATE.start_main_~i~1#1| 9), 338#true, 1218#true, t_funThread1of2ForFork0NotInUse, Black: 1234#(<= |ULTIMATE.start_main_~i~1#1| 7), t_funThread2of2ForFork0NotInUse, Black: 1623#(< |ULTIMATE.start_main_~i~1#1| 9), Black: 1606#(< |ULTIMATE.start_main_~i~1#1| 10), Black: 330#(= |ULTIMATE.start_main_~i~1#1| 0), 2234#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1)), 2299#true, Black: 466#(<= |ULTIMATE.start_main_~i~1#1| 1), Black: 634#(< |ULTIMATE.start_main_~i~1#1| 10), 132#L958-5true, 756#true, 462#true, Black: 739#(= |ULTIMATE.start_main_~i~3#1| 0), Black: 740#(= 0 |ULTIMATE.start_main_#t~post43#1|), Black: 2247#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 742#(and (= 0 |ULTIMATE.start_main_#t~post43#1|) (= |ULTIMATE.start_main_~i~3#1| 0)), Black: 2257#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2273#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|)) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), 747#true, Black: 2251#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|)) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2243#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2265#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2249#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2235#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2245#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2259#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2271#(and (= 3 |~#cache~0.base|) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2263#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|)), Black: 2269#(and (= 3 |~#cache~0.base|) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2279#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|)) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2255#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|)) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2253#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2261#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 1092#(< |ULTIMATE.start_main_~i~1#1| 8), Black: 1052#(< |ULTIMATE.start_main_~i~1#1| 10)]) [2022-11-16 12:28:36,120 INFO L383 tUnfolder$Statistics]: this new event has 252 ancestors and is cut-off event [2022-11-16 12:28:36,120 INFO L386 tUnfolder$Statistics]: existing Event has 240 ancestors and is cut-off event [2022-11-16 12:28:36,120 INFO L386 tUnfolder$Statistics]: existing Event has 210 ancestors and is cut-off event [2022-11-16 12:28:36,121 INFO L386 tUnfolder$Statistics]: existing Event has 270 ancestors and is cut-off event [2022-11-16 12:28:36,152 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1319] t_funEXIT-->L958-5: Formula: (= v_t_funThread2of2ForFork0_thidvar0_4 (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem58#1_9| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296))))) InVars {ULTIMATE.start_main_#t~mem58#1=|v_ULTIMATE.start_main_#t~mem58#1_9|, t_funThread2of2ForFork0_thidvar0=v_t_funThread2of2ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem58#1=|v_ULTIMATE.start_main_#t~mem58#1_9|, t_funThread2of2ForFork0_thidvar0=v_t_funThread2of2ForFork0_thidvar0_4} AuxVars[] AssignedVars[][416], [Black: 764#(<= |ULTIMATE.start_main_~i~1#1| 3), Black: 1069#(< |ULTIMATE.start_main_~i~1#1| 9), 338#true, 1218#true, Black: 1234#(<= |ULTIMATE.start_main_~i~1#1| 7), t_funThread1of2ForFork0InUse, t_funThread2of2ForFork0NotInUse, Black: 1623#(< |ULTIMATE.start_main_~i~1#1| 9), Black: 1606#(< |ULTIMATE.start_main_~i~1#1| 10), Black: 330#(= |ULTIMATE.start_main_~i~1#1| 0), 2263#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|)), 2299#true, Black: 466#(<= |ULTIMATE.start_main_~i~1#1| 1), Black: 634#(< |ULTIMATE.start_main_~i~1#1| 10), 132#L958-5true, 756#true, 462#true, Black: 739#(= |ULTIMATE.start_main_~i~3#1| 0), Black: 740#(= 0 |ULTIMATE.start_main_#t~post43#1|), Black: 2247#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 742#(and (= 0 |ULTIMATE.start_main_#t~post43#1|) (= |ULTIMATE.start_main_~i~3#1| 0)), Black: 2257#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2273#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|)) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), 747#true, Black: 2251#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|)) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), 97#L941-6true, Black: 2243#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2265#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2249#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2235#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2245#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2259#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2271#(and (= 3 |~#cache~0.base|) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2234#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1)), Black: 2269#(and (= 3 |~#cache~0.base|) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2279#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|)) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2255#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|)) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2253#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2261#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 1092#(< |ULTIMATE.start_main_~i~1#1| 8), Black: 1052#(< |ULTIMATE.start_main_~i~1#1| 10)]) [2022-11-16 12:28:36,152 INFO L383 tUnfolder$Statistics]: this new event has 254 ancestors and is cut-off event [2022-11-16 12:28:36,152 INFO L386 tUnfolder$Statistics]: existing Event has 242 ancestors and is cut-off event [2022-11-16 12:28:36,153 INFO L386 tUnfolder$Statistics]: existing Event has 212 ancestors and is cut-off event [2022-11-16 12:28:36,153 INFO L386 tUnfolder$Statistics]: existing Event has 254 ancestors and is cut-off event [2022-11-16 12:28:36,197 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1318] t_funEXIT-->L958-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem58#1_7| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread1of2ForFork0_thidvar0_4) InVars {t_funThread1of2ForFork0_thidvar0=v_t_funThread1of2ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem58#1=|v_ULTIMATE.start_main_#t~mem58#1_7|} OutVars{t_funThread1of2ForFork0_thidvar0=v_t_funThread1of2ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem58#1=|v_ULTIMATE.start_main_#t~mem58#1_7|} AuxVars[] AssignedVars[][383], [Black: 764#(<= |ULTIMATE.start_main_~i~1#1| 3), Black: 1069#(< |ULTIMATE.start_main_~i~1#1| 9), 338#true, 1218#true, t_funThread1of2ForFork0NotInUse, Black: 1234#(<= |ULTIMATE.start_main_~i~1#1| 7), Black: 1623#(< |ULTIMATE.start_main_~i~1#1| 9), t_funThread2of2ForFork0InUse, Black: 1606#(< |ULTIMATE.start_main_~i~1#1| 10), Black: 330#(= |ULTIMATE.start_main_~i~1#1| 0), 2234#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1)), 2299#true, Black: 466#(<= |ULTIMATE.start_main_~i~1#1| 1), Black: 634#(< |ULTIMATE.start_main_~i~1#1| 10), 232#L941-10true, 132#L958-5true, 756#true, 462#true, Black: 739#(= |ULTIMATE.start_main_~i~3#1| 0), Black: 740#(= 0 |ULTIMATE.start_main_#t~post43#1|), Black: 2247#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 742#(and (= 0 |ULTIMATE.start_main_#t~post43#1|) (= |ULTIMATE.start_main_~i~3#1| 0)), Black: 2257#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2273#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|)) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2251#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|)) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), 747#true, Black: 2243#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2265#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2249#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2235#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2245#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2259#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2271#(and (= 3 |~#cache~0.base|) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2263#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|)), Black: 2269#(and (= 3 |~#cache~0.base|) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2279#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|)) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2255#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|)) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2253#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2261#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 1092#(< |ULTIMATE.start_main_~i~1#1| 8), Black: 1052#(< |ULTIMATE.start_main_~i~1#1| 10)]) [2022-11-16 12:28:36,198 INFO L383 tUnfolder$Statistics]: this new event has 258 ancestors and is cut-off event [2022-11-16 12:28:36,198 INFO L386 tUnfolder$Statistics]: existing Event has 216 ancestors and is cut-off event [2022-11-16 12:28:36,198 INFO L386 tUnfolder$Statistics]: existing Event has 246 ancestors and is cut-off event [2022-11-16 12:28:36,198 INFO L386 tUnfolder$Statistics]: existing Event has 246 ancestors and is cut-off event [2022-11-16 12:28:36,274 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1160] L946-4-->L946-5: Formula: (and (= |v_t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.offset_1| (+ (* |v_t_funThread1of2ForFork0_~i~0#1_9| 28) |v_~#cache~0.offset_11|)) (= |v_t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base_1| |v_~#cache~0.base_12|)) InVars {~#cache~0.offset=|v_~#cache~0.offset_11|, ~#cache~0.base=|v_~#cache~0.base_12|, t_funThread1of2ForFork0_~i~0#1=|v_t_funThread1of2ForFork0_~i~0#1_9|} OutVars{~#cache~0.offset=|v_~#cache~0.offset_11|, ~#cache~0.base=|v_~#cache~0.base_12|, t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base=|v_t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base_1|, t_funThread1of2ForFork0_~i~0#1=|v_t_funThread1of2ForFork0_~i~0#1_9|, t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.offset=|v_t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.offset_1|} AuxVars[] AssignedVars[t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.offset, t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base][201], [Black: 764#(<= |ULTIMATE.start_main_~i~1#1| 3), Black: 1069#(< |ULTIMATE.start_main_~i~1#1| 9), 338#true, 1218#true, Black: 1234#(<= |ULTIMATE.start_main_~i~1#1| 7), t_funThread1of2ForFork0InUse, Black: 1623#(< |ULTIMATE.start_main_~i~1#1| 9), t_funThread2of2ForFork0InUse, Black: 1606#(< |ULTIMATE.start_main_~i~1#1| 10), Black: 330#(= |ULTIMATE.start_main_~i~1#1| 0), 2234#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1)), 2299#true, 181#L946-5true, 280#L959true, Black: 466#(<= |ULTIMATE.start_main_~i~1#1| 1), Black: 634#(< |ULTIMATE.start_main_~i~1#1| 10), 232#L941-10true, 756#true, 462#true, Black: 739#(= |ULTIMATE.start_main_~i~3#1| 0), Black: 2247#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 740#(= 0 |ULTIMATE.start_main_#t~post43#1|), Black: 2257#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 742#(and (= 0 |ULTIMATE.start_main_#t~post43#1|) (= |ULTIMATE.start_main_~i~3#1| 0)), Black: 2273#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|)) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2251#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|)) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), 747#true, Black: 2243#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2265#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2249#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2235#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2245#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2259#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2271#(and (= 3 |~#cache~0.base|) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2263#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|)), Black: 2269#(and (= 3 |~#cache~0.base|) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2279#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|)) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2255#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|)) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2253#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2261#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 1092#(< |ULTIMATE.start_main_~i~1#1| 8), Black: 1052#(< |ULTIMATE.start_main_~i~1#1| 10)]) [2022-11-16 12:28:36,275 INFO L383 tUnfolder$Statistics]: this new event has 247 ancestors and is cut-off event [2022-11-16 12:28:36,275 INFO L386 tUnfolder$Statistics]: existing Event has 247 ancestors and is cut-off event [2022-11-16 12:28:36,275 INFO L386 tUnfolder$Statistics]: existing Event has 205 ancestors and is cut-off event [2022-11-16 12:28:36,275 INFO L386 tUnfolder$Statistics]: existing Event has 235 ancestors and is cut-off event [2022-11-16 12:28:36,339 INFO L130 PetriNetUnfolder]: 671/7942 cut-off events. [2022-11-16 12:28:36,340 INFO L131 PetriNetUnfolder]: For 3660/3837 co-relation queries the response was YES. [2022-11-16 12:28:36,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10841 conditions, 7942 events. 671/7942 cut-off events. For 3660/3837 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 88552 event pairs, 89 based on Foata normal form. 16/6896 useless extension candidates. Maximal degree in co-relation 10639. Up to 257 conditions per place. [2022-11-16 12:28:36,550 INFO L137 encePairwiseOnDemand]: 377/380 looper letters, 14 selfloop transitions, 2 changer transitions 0/447 dead transitions. [2022-11-16 12:28:36,551 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 447 transitions, 1594 flow [2022-11-16 12:28:36,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:28:36,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:28:36,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 959 transitions. [2022-11-16 12:28:36,571 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8412280701754385 [2022-11-16 12:28:36,572 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 959 transitions. [2022-11-16 12:28:36,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 959 transitions. [2022-11-16 12:28:36,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:36,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 959 transitions. [2022-11-16 12:28:36,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 319.6666666666667) internal successors, (959), 3 states have internal predecessors, (959), 0 states have call successors, (0), 0 states 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 12:28:36,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 380.0) internal successors, (1520), 4 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states 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 12:28:36,578 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 380.0) internal successors, (1520), 4 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states 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 12:28:36,579 INFO L175 Difference]: Start difference. First operand has 414 places, 443 transitions, 1554 flow. Second operand 3 states and 959 transitions. [2022-11-16 12:28:36,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 447 transitions, 1594 flow [2022-11-16 12:28:36,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 447 transitions, 1593 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:28:36,623 INFO L231 Difference]: Finished difference. Result has 416 places, 444 transitions, 1565 flow [2022-11-16 12:28:36,624 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=1553, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1565, PETRI_PLACES=416, PETRI_TRANSITIONS=444} [2022-11-16 12:28:36,624 INFO L288 CegarLoopForPetriNet]: 325 programPoint places, 91 predicate places. [2022-11-16 12:28:36,624 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 444 transitions, 1565 flow [2022-11-16 12:28:36,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 315.6666666666667) internal successors, (947), 3 states have internal predecessors, (947), 0 states have call successors, (0), 0 states 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 12:28:36,625 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:36,625 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:36,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 12:28:36,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:36,832 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-16 12:28:36,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:36,833 INFO L85 PathProgramCache]: Analyzing trace with hash 805498546, now seen corresponding path program 1 times [2022-11-16 12:28:36,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:36,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213757745] [2022-11-16 12:28:36,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:36,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:36,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:28:36,870 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:28:36,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:28:36,917 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:28:36,918 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:28:36,918 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (34 of 35 remaining) [2022-11-16 12:28:36,918 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 35 remaining) [2022-11-16 12:28:36,918 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 35 remaining) [2022-11-16 12:28:36,919 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 35 remaining) [2022-11-16 12:28:36,919 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 35 remaining) [2022-11-16 12:28:36,919 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 35 remaining) [2022-11-16 12:28:36,919 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 35 remaining) [2022-11-16 12:28:36,919 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 35 remaining) [2022-11-16 12:28:36,920 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 35 remaining) [2022-11-16 12:28:36,920 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 35 remaining) [2022-11-16 12:28:36,920 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 35 remaining) [2022-11-16 12:28:36,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 35 remaining) [2022-11-16 12:28:36,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 35 remaining) [2022-11-16 12:28:36,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 35 remaining) [2022-11-16 12:28:36,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 35 remaining) [2022-11-16 12:28:36,924 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 35 remaining) [2022-11-16 12:28:36,924 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 35 remaining) [2022-11-16 12:28:36,924 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 35 remaining) [2022-11-16 12:28:36,924 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 35 remaining) [2022-11-16 12:28:36,925 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 35 remaining) [2022-11-16 12:28:36,925 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 35 remaining) [2022-11-16 12:28:36,925 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 35 remaining) [2022-11-16 12:28:36,925 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 35 remaining) [2022-11-16 12:28:36,925 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 35 remaining) [2022-11-16 12:28:36,926 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 35 remaining) [2022-11-16 12:28:36,926 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 35 remaining) [2022-11-16 12:28:36,926 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 35 remaining) [2022-11-16 12:28:36,927 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 35 remaining) [2022-11-16 12:28:36,927 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 35 remaining) [2022-11-16 12:28:36,927 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 35 remaining) [2022-11-16 12:28:36,927 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 35 remaining) [2022-11-16 12:28:36,928 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 35 remaining) [2022-11-16 12:28:36,928 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 35 remaining) [2022-11-16 12:28:36,928 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 35 remaining) [2022-11-16 12:28:36,928 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 35 remaining) [2022-11-16 12:28:36,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-16 12:28:36,929 INFO L444 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:36,930 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 12:28:36,930 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-16 12:28:36,990 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 12:28:36,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 396 places, 464 transitions, 958 flow [2022-11-16 12:28:37,215 INFO L130 PetriNetUnfolder]: 168/1050 cut-off events. [2022-11-16 12:28:37,215 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-16 12:28:37,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1078 conditions, 1050 events. 168/1050 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 5992 event pairs, 1 based on Foata normal form. 0/798 useless extension candidates. Maximal degree in co-relation 739. Up to 16 conditions per place. [2022-11-16 12:28:37,229 INFO L82 GeneralOperation]: Start removeDead. Operand has 396 places, 464 transitions, 958 flow [2022-11-16 12:28:37,247 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 396 places, 464 transitions, 958 flow [2022-11-16 12:28:37,248 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:28:37,249 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;@1b425d2d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:28:37,249 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2022-11-16 12:28:37,252 INFO L130 PetriNetUnfolder]: 2/32 cut-off events. [2022-11-16 12:28:37,253 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:28:37,253 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:37,253 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] [2022-11-16 12:28:37,253 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-16 12:28:37,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:37,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1409541075, now seen corresponding path program 1 times [2022-11-16 12:28:37,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:37,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242015409] [2022-11-16 12:28:37,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:37,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:37,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:37,293 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 12:28:37,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:37,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242015409] [2022-11-16 12:28:37,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242015409] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:37,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:28:37,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:28:37,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488679278] [2022-11-16 12:28:37,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:37,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:28:37,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:37,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:28:37,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:28:37,298 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 379 out of 464 [2022-11-16 12:28:37,300 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 464 transitions, 958 flow. Second operand has 4 states, 4 states have (on average 380.5) internal successors, (1522), 4 states have internal predecessors, (1522), 0 states have call successors, (0), 0 states 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 12:28:37,300 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:37,301 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 379 of 464 [2022-11-16 12:28:37,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:37,774 INFO L130 PetriNetUnfolder]: 27/905 cut-off events. [2022-11-16 12:28:37,775 INFO L131 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2022-11-16 12:28:37,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 968 conditions, 905 events. 27/905 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 5230 event pairs, 1 based on Foata normal form. 258/1041 useless extension candidates. Maximal degree in co-relation 662. Up to 28 conditions per place. [2022-11-16 12:28:37,797 INFO L137 encePairwiseOnDemand]: 395/464 looper letters, 21 selfloop transitions, 4 changer transitions 0/404 dead transitions. [2022-11-16 12:28:37,798 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 404 transitions, 888 flow [2022-11-16 12:28:37,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:28:37,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:28:37,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1986 transitions. [2022-11-16 12:28:37,801 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8560344827586207 [2022-11-16 12:28:37,801 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1986 transitions. [2022-11-16 12:28:37,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1986 transitions. [2022-11-16 12:28:37,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:37,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1986 transitions. [2022-11-16 12:28:37,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 397.2) internal successors, (1986), 5 states have internal predecessors, (1986), 0 states have call successors, (0), 0 states 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 12:28:37,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 464.0) internal successors, (2784), 6 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states 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 12:28:37,811 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 464.0) internal successors, (2784), 6 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states 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 12:28:37,811 INFO L175 Difference]: Start difference. First operand has 396 places, 464 transitions, 958 flow. Second operand 5 states and 1986 transitions. [2022-11-16 12:28:37,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 404 transitions, 888 flow [2022-11-16 12:28:37,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 404 transitions, 888 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:28:37,819 INFO L231 Difference]: Finished difference. Result has 398 places, 400 transitions, 856 flow [2022-11-16 12:28:37,819 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=464, PETRI_DIFFERENCE_MINUEND_FLOW=824, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=856, PETRI_PLACES=398, PETRI_TRANSITIONS=400} [2022-11-16 12:28:37,820 INFO L288 CegarLoopForPetriNet]: 396 programPoint places, 2 predicate places. [2022-11-16 12:28:37,820 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 400 transitions, 856 flow [2022-11-16 12:28:37,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 380.5) internal successors, (1522), 4 states have internal predecessors, (1522), 0 states have call successors, (0), 0 states 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 12:28:37,821 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:37,821 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:37,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-16 12:28:37,822 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-16 12:28:37,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:37,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1391406635, now seen corresponding path program 1 times [2022-11-16 12:28:37,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:37,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157149817] [2022-11-16 12:28:37,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:37,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:37,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:37,853 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:28:37,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:37,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157149817] [2022-11-16 12:28:37,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157149817] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:37,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:28:37,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:28:37,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687698865] [2022-11-16 12:28:37,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:37,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:28:37,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:37,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:28:37,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:28:37,858 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 379 out of 464 [2022-11-16 12:28:37,859 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 400 transitions, 856 flow. Second operand has 4 states, 4 states have (on average 382.25) internal successors, (1529), 4 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states 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 12:28:37,859 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:37,860 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 379 of 464 [2022-11-16 12:28:37,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:38,091 INFO L130 PetriNetUnfolder]: 27/904 cut-off events. [2022-11-16 12:28:38,092 INFO L131 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2022-11-16 12:28:38,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 982 conditions, 904 events. 27/904 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 5225 event pairs, 1 based on Foata normal form. 1/786 useless extension candidates. Maximal degree in co-relation 927. Up to 20 conditions per place. [2022-11-16 12:28:38,115 INFO L137 encePairwiseOnDemand]: 458/464 looper letters, 13 selfloop transitions, 8 changer transitions 0/400 dead transitions. [2022-11-16 12:28:38,117 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 400 transitions, 896 flow [2022-11-16 12:28:38,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:28:38,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:28:38,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1914 transitions. [2022-11-16 12:28:38,120 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.825 [2022-11-16 12:28:38,121 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1914 transitions. [2022-11-16 12:28:38,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1914 transitions. [2022-11-16 12:28:38,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:38,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1914 transitions. [2022-11-16 12:28:38,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 382.8) internal successors, (1914), 5 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states 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 12:28:38,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 464.0) internal successors, (2784), 6 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states 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 12:28:38,131 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 464.0) internal successors, (2784), 6 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states 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 12:28:38,131 INFO L175 Difference]: Start difference. First operand has 398 places, 400 transitions, 856 flow. Second operand 5 states and 1914 transitions. [2022-11-16 12:28:38,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 400 transitions, 896 flow [2022-11-16 12:28:38,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 400 transitions, 894 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:28:38,140 INFO L231 Difference]: Finished difference. Result has 401 places, 400 transitions, 874 flow [2022-11-16 12:28:38,141 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=464, PETRI_DIFFERENCE_MINUEND_FLOW=850, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=874, PETRI_PLACES=401, PETRI_TRANSITIONS=400} [2022-11-16 12:28:38,142 INFO L288 CegarLoopForPetriNet]: 396 programPoint places, 5 predicate places. [2022-11-16 12:28:38,142 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 400 transitions, 874 flow [2022-11-16 12:28:38,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 382.25) internal successors, (1529), 4 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states 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 12:28:38,143 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:38,143 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:38,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-16 12:28:38,143 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-16 12:28:38,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:38,144 INFO L85 PathProgramCache]: Analyzing trace with hash -183931115, now seen corresponding path program 1 times [2022-11-16 12:28:38,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:38,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368505570] [2022-11-16 12:28:38,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:38,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:38,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:38,199 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:28:38,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:38,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368505570] [2022-11-16 12:28:38,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368505570] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:28:38,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516653221] [2022-11-16 12:28:38,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:38,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:38,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:28:38,203 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:28:38,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 12:28:38,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:38,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:28:38,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:38,395 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:28:38,395 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:28:38,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516653221] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:38,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:28:38,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-16 12:28:38,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656267419] [2022-11-16 12:28:38,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:38,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:28:38,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:38,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:28:38,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:28:38,399 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 379 out of 464 [2022-11-16 12:28:38,401 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 400 transitions, 874 flow. Second operand has 5 states, 5 states have (on average 381.8) internal successors, (1909), 5 states have internal predecessors, (1909), 0 states have call successors, (0), 0 states 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 12:28:38,402 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:38,402 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 379 of 464 [2022-11-16 12:28:38,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:38,643 INFO L130 PetriNetUnfolder]: 27/903 cut-off events. [2022-11-16 12:28:38,643 INFO L131 PetriNetUnfolder]: For 59/59 co-relation queries the response was YES. [2022-11-16 12:28:38,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 989 conditions, 903 events. 27/903 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 5217 event pairs, 1 based on Foata normal form. 1/785 useless extension candidates. Maximal degree in co-relation 925. Up to 23 conditions per place. [2022-11-16 12:28:38,666 INFO L137 encePairwiseOnDemand]: 460/464 looper letters, 15 selfloop transitions, 5 changer transitions 0/399 dead transitions. [2022-11-16 12:28:38,667 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 399 transitions, 910 flow [2022-11-16 12:28:38,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:28:38,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:28:38,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1533 transitions. [2022-11-16 12:28:38,670 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8259698275862069 [2022-11-16 12:28:38,670 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1533 transitions. [2022-11-16 12:28:38,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1533 transitions. [2022-11-16 12:28:38,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:38,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1533 transitions. [2022-11-16 12:28:38,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 383.25) internal successors, (1533), 4 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states 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 12:28:38,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 464.0) internal successors, (2320), 5 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states 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 12:28:38,827 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 464.0) internal successors, (2320), 5 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states 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 12:28:38,827 INFO L175 Difference]: Start difference. First operand has 401 places, 400 transitions, 874 flow. Second operand 4 states and 1533 transitions. [2022-11-16 12:28:38,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 399 transitions, 910 flow [2022-11-16 12:28:38,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 399 transitions, 898 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:28:38,837 INFO L231 Difference]: Finished difference. Result has 400 places, 399 transitions, 868 flow [2022-11-16 12:28:38,837 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=464, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=868, PETRI_PLACES=400, PETRI_TRANSITIONS=399} [2022-11-16 12:28:38,838 INFO L288 CegarLoopForPetriNet]: 396 programPoint places, 4 predicate places. [2022-11-16 12:28:38,838 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 399 transitions, 868 flow [2022-11-16 12:28:38,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 381.8) internal successors, (1909), 5 states have internal predecessors, (1909), 0 states have call successors, (0), 0 states 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 12:28:38,839 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:38,839 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] [2022-11-16 12:28:38,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 12:28:39,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:39,053 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-16 12:28:39,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:39,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1973769465, now seen corresponding path program 1 times [2022-11-16 12:28:39,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:39,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587251735] [2022-11-16 12:28:39,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:39,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:39,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:39,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:28:39,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:39,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587251735] [2022-11-16 12:28:39,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587251735] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:28:39,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558194647] [2022-11-16 12:28:39,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:39,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:39,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:28:39,104 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:28:39,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 12:28:39,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:39,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:28:39,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:39,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:28:39,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:28:39,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:28:39,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558194647] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:28:39,287 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:28:39,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 12:28:39,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205007714] [2022-11-16 12:28:39,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:28:39,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:28:39,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:39,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:28:39,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:28:39,292 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 379 out of 464 [2022-11-16 12:28:39,295 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 399 transitions, 868 flow. Second operand has 10 states, 10 states have (on average 381.7) internal successors, (3817), 10 states have internal predecessors, (3817), 0 states have call successors, (0), 0 states 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 12:28:39,295 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:39,296 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 379 of 464 [2022-11-16 12:28:39,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:39,587 INFO L130 PetriNetUnfolder]: 27/911 cut-off events. [2022-11-16 12:28:39,587 INFO L131 PetriNetUnfolder]: For 65/65 co-relation queries the response was YES. [2022-11-16 12:28:39,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1013 conditions, 911 events. 27/911 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 5197 event pairs, 1 based on Foata normal form. 2/794 useless extension candidates. Maximal degree in co-relation 915. Up to 20 conditions per place. [2022-11-16 12:28:39,610 INFO L137 encePairwiseOnDemand]: 458/464 looper letters, 22 selfloop transitions, 9 changer transitions 0/410 dead transitions. [2022-11-16 12:28:39,610 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 410 transitions, 968 flow [2022-11-16 12:28:39,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:28:39,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:28:39,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3444 transitions. [2022-11-16 12:28:39,618 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8247126436781609 [2022-11-16 12:28:39,618 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3444 transitions. [2022-11-16 12:28:39,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3444 transitions. [2022-11-16 12:28:39,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:39,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3444 transitions. [2022-11-16 12:28:39,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 382.6666666666667) internal successors, (3444), 9 states have internal predecessors, (3444), 0 states have call successors, (0), 0 states 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 12:28:39,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 464.0) internal successors, (4640), 10 states have internal predecessors, (4640), 0 states have call successors, (0), 0 states 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 12:28:39,647 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 464.0) internal successors, (4640), 10 states have internal predecessors, (4640), 0 states have call successors, (0), 0 states 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 12:28:39,647 INFO L175 Difference]: Start difference. First operand has 400 places, 399 transitions, 868 flow. Second operand 9 states and 3444 transitions. [2022-11-16 12:28:39,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 410 transitions, 968 flow [2022-11-16 12:28:39,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 410 transitions, 954 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:28:39,657 INFO L231 Difference]: Finished difference. Result has 409 places, 403 transitions, 914 flow [2022-11-16 12:28:39,658 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=464, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=914, PETRI_PLACES=409, PETRI_TRANSITIONS=403} [2022-11-16 12:28:39,659 INFO L288 CegarLoopForPetriNet]: 396 programPoint places, 13 predicate places. [2022-11-16 12:28:39,659 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 403 transitions, 914 flow [2022-11-16 12:28:39,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 381.7) internal successors, (3817), 10 states have internal predecessors, (3817), 0 states have call successors, (0), 0 states 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 12:28:39,660 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:39,661 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:28:39,670 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-11-16 12:28:39,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:39,865 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-16 12:28:39,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:39,867 INFO L85 PathProgramCache]: Analyzing trace with hash 2104083655, now seen corresponding path program 2 times [2022-11-16 12:28:39,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:39,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666006488] [2022-11-16 12:28:39,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:39,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:39,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:39,927 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 12:28:39,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:39,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666006488] [2022-11-16 12:28:39,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666006488] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:39,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:28:39,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:28:39,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23123050] [2022-11-16 12:28:39,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:39,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:28:39,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:39,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:28:39,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:28:39,931 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 379 out of 464 [2022-11-16 12:28:39,933 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 403 transitions, 914 flow. Second operand has 4 states, 4 states have (on average 380.75) internal successors, (1523), 4 states have internal predecessors, (1523), 0 states have call successors, (0), 0 states 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 12:28:39,933 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:39,934 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 379 of 464 [2022-11-16 12:28:39,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:40,185 INFO L130 PetriNetUnfolder]: 23/792 cut-off events. [2022-11-16 12:28:40,185 INFO L131 PetriNetUnfolder]: For 71/71 co-relation queries the response was YES. [2022-11-16 12:28:40,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 917 conditions, 792 events. 23/792 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 4336 event pairs, 1 based on Foata normal form. 0/691 useless extension candidates. Maximal degree in co-relation 828. Up to 40 conditions per place. [2022-11-16 12:28:40,209 INFO L137 encePairwiseOnDemand]: 457/464 looper letters, 21 selfloop transitions, 4 changer transitions 0/410 dead transitions. [2022-11-16 12:28:40,210 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 410 transitions, 978 flow [2022-11-16 12:28:40,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:28:40,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:28:40,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1923 transitions. [2022-11-16 12:28:40,213 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8288793103448275 [2022-11-16 12:28:40,214 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1923 transitions. [2022-11-16 12:28:40,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1923 transitions. [2022-11-16 12:28:40,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:40,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1923 transitions. [2022-11-16 12:28:40,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 384.6) internal successors, (1923), 5 states have internal predecessors, (1923), 0 states have call successors, (0), 0 states 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 12:28:40,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 464.0) internal successors, (2784), 6 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states 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 12:28:40,224 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 464.0) internal successors, (2784), 6 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states 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 12:28:40,224 INFO L175 Difference]: Start difference. First operand has 409 places, 403 transitions, 914 flow. Second operand 5 states and 1923 transitions. [2022-11-16 12:28:40,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 410 transitions, 978 flow [2022-11-16 12:28:40,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 410 transitions, 962 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-11-16 12:28:40,233 INFO L231 Difference]: Finished difference. Result has 412 places, 406 transitions, 930 flow [2022-11-16 12:28:40,234 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=464, PETRI_DIFFERENCE_MINUEND_FLOW=898, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=930, PETRI_PLACES=412, PETRI_TRANSITIONS=406} [2022-11-16 12:28:40,234 INFO L288 CegarLoopForPetriNet]: 396 programPoint places, 16 predicate places. [2022-11-16 12:28:40,235 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 406 transitions, 930 flow [2022-11-16 12:28:40,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 380.75) internal successors, (1523), 4 states have internal predecessors, (1523), 0 states have call successors, (0), 0 states 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 12:28:40,235 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:40,236 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:40,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-16 12:28:40,236 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-16 12:28:40,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:40,237 INFO L85 PathProgramCache]: Analyzing trace with hash 2118770970, now seen corresponding path program 1 times [2022-11-16 12:28:40,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:40,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060216128] [2022-11-16 12:28:40,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:40,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:40,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:40,309 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-16 12:28:40,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:40,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060216128] [2022-11-16 12:28:40,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060216128] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:40,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:28:40,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:28:40,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965542355] [2022-11-16 12:28:40,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:40,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:28:40,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:40,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:28:40,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:28:40,313 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 379 out of 464 [2022-11-16 12:28:40,315 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 406 transitions, 930 flow. Second operand has 4 states, 4 states have (on average 382.75) internal successors, (1531), 4 states have internal predecessors, (1531), 0 states have call successors, (0), 0 states 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 12:28:40,315 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:40,315 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 379 of 464 [2022-11-16 12:28:40,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:40,556 INFO L130 PetriNetUnfolder]: 23/790 cut-off events. [2022-11-16 12:28:40,556 INFO L131 PetriNetUnfolder]: For 68/68 co-relation queries the response was YES. [2022-11-16 12:28:40,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 926 conditions, 790 events. 23/790 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 4306 event pairs, 1 based on Foata normal form. 2/698 useless extension candidates. Maximal degree in co-relation 838. Up to 20 conditions per place. [2022-11-16 12:28:40,580 INFO L137 encePairwiseOnDemand]: 458/464 looper letters, 13 selfloop transitions, 8 changer transitions 0/406 dead transitions. [2022-11-16 12:28:40,580 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 406 transitions, 970 flow [2022-11-16 12:28:40,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:28:40,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:28:40,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1914 transitions. [2022-11-16 12:28:40,584 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.825 [2022-11-16 12:28:40,584 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1914 transitions. [2022-11-16 12:28:40,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1914 transitions. [2022-11-16 12:28:40,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:40,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1914 transitions. [2022-11-16 12:28:40,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 382.8) internal successors, (1914), 5 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states 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 12:28:40,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 464.0) internal successors, (2784), 6 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states 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 12:28:40,594 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 464.0) internal successors, (2784), 6 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states 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 12:28:40,595 INFO L175 Difference]: Start difference. First operand has 412 places, 406 transitions, 930 flow. Second operand 5 states and 1914 transitions. [2022-11-16 12:28:40,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 406 transitions, 970 flow [2022-11-16 12:28:40,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 406 transitions, 968 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:28:40,603 INFO L231 Difference]: Finished difference. Result has 415 places, 406 transitions, 948 flow [2022-11-16 12:28:40,604 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=464, PETRI_DIFFERENCE_MINUEND_FLOW=924, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=948, PETRI_PLACES=415, PETRI_TRANSITIONS=406} [2022-11-16 12:28:40,605 INFO L288 CegarLoopForPetriNet]: 396 programPoint places, 19 predicate places. [2022-11-16 12:28:40,605 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 406 transitions, 948 flow [2022-11-16 12:28:40,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 382.75) internal successors, (1531), 4 states have internal predecessors, (1531), 0 states have call successors, (0), 0 states 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 12:28:40,606 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:40,607 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:40,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-16 12:28:40,607 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-16 12:28:40,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:40,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1257392036, now seen corresponding path program 1 times [2022-11-16 12:28:40,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:40,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681687811] [2022-11-16 12:28:40,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:40,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:40,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:40,773 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 12:28:40,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:40,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681687811] [2022-11-16 12:28:40,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681687811] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:28:40,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861337170] [2022-11-16 12:28:40,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:40,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:40,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:28:40,775 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:28:40,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 12:28:40,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:40,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:28:40,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:40,964 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 12:28:40,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:28:41,077 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 12:28:41,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861337170] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:28:41,077 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:28:41,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-16 12:28:41,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900271954] [2022-11-16 12:28:41,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:28:41,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:28:41,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:41,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:28:41,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:28:41,084 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 379 out of 464 [2022-11-16 12:28:41,090 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 406 transitions, 948 flow. Second operand has 18 states, 18 states have (on average 382.1111111111111) internal successors, (6878), 18 states have internal predecessors, (6878), 0 states have call successors, (0), 0 states 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 12:28:41,090 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:41,091 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 379 of 464 [2022-11-16 12:28:41,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:41,541 INFO L130 PetriNetUnfolder]: 23/818 cut-off events. [2022-11-16 12:28:41,541 INFO L131 PetriNetUnfolder]: For 114/114 co-relation queries the response was YES. [2022-11-16 12:28:41,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1034 conditions, 818 events. 23/818 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 4307 event pairs, 1 based on Foata normal form. 4/728 useless extension candidates. Maximal degree in co-relation 828. Up to 20 conditions per place. [2022-11-16 12:28:41,565 INFO L137 encePairwiseOnDemand]: 458/464 looper letters, 38 selfloop transitions, 21 changer transitions 0/441 dead transitions. [2022-11-16 12:28:41,565 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 441 transitions, 1220 flow [2022-11-16 12:28:41,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 12:28:41,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 12:28:41,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 8022 transitions. [2022-11-16 12:28:41,576 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8232758620689655 [2022-11-16 12:28:41,577 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 8022 transitions. [2022-11-16 12:28:41,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 8022 transitions. [2022-11-16 12:28:41,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:41,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 8022 transitions. [2022-11-16 12:28:41,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 382.0) internal successors, (8022), 21 states have internal predecessors, (8022), 0 states have call successors, (0), 0 states 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 12:28:41,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 464.0) internal successors, (10208), 22 states have internal predecessors, (10208), 0 states have call successors, (0), 0 states 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 12:28:41,613 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 464.0) internal successors, (10208), 22 states have internal predecessors, (10208), 0 states have call successors, (0), 0 states 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 12:28:41,613 INFO L175 Difference]: Start difference. First operand has 415 places, 406 transitions, 948 flow. Second operand 21 states and 8022 transitions. [2022-11-16 12:28:41,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 441 transitions, 1220 flow [2022-11-16 12:28:41,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 441 transitions, 1208 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:28:41,623 INFO L231 Difference]: Finished difference. Result has 437 places, 419 transitions, 1092 flow [2022-11-16 12:28:41,624 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=464, PETRI_DIFFERENCE_MINUEND_FLOW=936, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1092, PETRI_PLACES=437, PETRI_TRANSITIONS=419} [2022-11-16 12:28:41,624 INFO L288 CegarLoopForPetriNet]: 396 programPoint places, 41 predicate places. [2022-11-16 12:28:41,624 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 419 transitions, 1092 flow [2022-11-16 12:28:41,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 382.1111111111111) internal successors, (6878), 18 states have internal predecessors, (6878), 0 states have call successors, (0), 0 states 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 12:28:41,627 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:41,627 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:41,635 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-11-16 12:28:41,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-16 12:28:41,833 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-16 12:28:41,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:41,833 INFO L85 PathProgramCache]: Analyzing trace with hash -454429660, now seen corresponding path program 2 times [2022-11-16 12:28:41,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:41,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714450083] [2022-11-16 12:28:41,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:41,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:41,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:42,132 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 12:28:42,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:42,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714450083] [2022-11-16 12:28:42,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714450083] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:28:42,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357176340] [2022-11-16 12:28:42,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:28:42,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:42,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:28:42,134 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:28:42,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-16 12:28:42,279 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:28:42,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:28:42,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 12:28:42,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:42,384 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 12:28:42,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:28:42,608 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 12:28:42,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357176340] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:28:42,609 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:28:42,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-16 12:28:42,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865366400] [2022-11-16 12:28:42,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:28:42,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:28:42,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:42,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:28:42,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:28:42,617 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 379 out of 464 [2022-11-16 12:28:42,624 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 419 transitions, 1092 flow. Second operand has 23 states, 23 states have (on average 382.3478260869565) internal successors, (8794), 23 states have internal predecessors, (8794), 0 states have call successors, (0), 0 states 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 12:28:42,624 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:42,624 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 379 of 464 [2022-11-16 12:28:42,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:43,216 INFO L130 PetriNetUnfolder]: 23/839 cut-off events. [2022-11-16 12:28:43,216 INFO L131 PetriNetUnfolder]: For 274/274 co-relation queries the response was YES. [2022-11-16 12:28:43,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1156 conditions, 839 events. 23/839 cut-off events. For 274/274 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 4307 event pairs, 1 based on Foata normal form. 3/748 useless extension candidates. Maximal degree in co-relation 828. Up to 20 conditions per place. [2022-11-16 12:28:43,240 INFO L137 encePairwiseOnDemand]: 458/464 looper letters, 50 selfloop transitions, 30 changer transitions 0/462 dead transitions. [2022-11-16 12:28:43,240 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 462 transitions, 1462 flow [2022-11-16 12:28:43,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-16 12:28:43,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-16 12:28:43,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 11453 transitions. [2022-11-16 12:28:43,252 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8227729885057471 [2022-11-16 12:28:43,252 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 11453 transitions. [2022-11-16 12:28:43,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 11453 transitions. [2022-11-16 12:28:43,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:43,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 11453 transitions. [2022-11-16 12:28:43,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 381.76666666666665) internal successors, (11453), 30 states have internal predecessors, (11453), 0 states have call successors, (0), 0 states 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 12:28:43,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 464.0) internal successors, (14384), 31 states have internal predecessors, (14384), 0 states have call successors, (0), 0 states 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 12:28:43,296 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 464.0) internal successors, (14384), 31 states have internal predecessors, (14384), 0 states have call successors, (0), 0 states 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 12:28:43,297 INFO L175 Difference]: Start difference. First operand has 437 places, 419 transitions, 1092 flow. Second operand 30 states and 11453 transitions. [2022-11-16 12:28:43,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 462 transitions, 1462 flow [2022-11-16 12:28:43,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 462 transitions, 1382 flow, removed 32 selfloop flow, removed 8 redundant places. [2022-11-16 12:28:43,311 INFO L231 Difference]: Finished difference. Result has 462 places, 429 transitions, 1190 flow [2022-11-16 12:28:43,314 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=464, PETRI_DIFFERENCE_MINUEND_FLOW=1036, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1190, PETRI_PLACES=462, PETRI_TRANSITIONS=429} [2022-11-16 12:28:43,316 INFO L288 CegarLoopForPetriNet]: 396 programPoint places, 66 predicate places. [2022-11-16 12:28:43,316 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 429 transitions, 1190 flow [2022-11-16 12:28:43,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 382.3478260869565) internal successors, (8794), 23 states have internal predecessors, (8794), 0 states have call successors, (0), 0 states 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 12:28:43,318 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:43,319 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:43,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-16 12:28:43,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-16 12:28:43,524 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-16 12:28:43,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:43,524 INFO L85 PathProgramCache]: Analyzing trace with hash -2122892894, now seen corresponding path program 3 times [2022-11-16 12:28:43,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:43,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470200712] [2022-11-16 12:28:43,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:43,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:43,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:43,671 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 12:28:43,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:43,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470200712] [2022-11-16 12:28:43,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470200712] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:28:43,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367337355] [2022-11-16 12:28:43,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:28:43,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:43,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:28:43,687 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:28:43,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-16 12:28:43,835 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-16 12:28:43,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:28:43,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:28:43,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:43,884 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 12:28:43,884 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:28:43,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367337355] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:43,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:28:43,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-16 12:28:43,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502346969] [2022-11-16 12:28:43,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:43,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:28:43,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:43,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:28:43,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:28:43,889 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 379 out of 464 [2022-11-16 12:28:43,891 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 429 transitions, 1190 flow. Second operand has 5 states, 5 states have (on average 382.2) internal successors, (1911), 5 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states 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 12:28:43,891 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:43,892 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 379 of 464 [2022-11-16 12:28:43,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:44,258 INFO L130 PetriNetUnfolder]: 23/837 cut-off events. [2022-11-16 12:28:44,259 INFO L131 PetriNetUnfolder]: For 235/235 co-relation queries the response was YES. [2022-11-16 12:28:44,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1111 conditions, 837 events. 23/837 cut-off events. For 235/235 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 4303 event pairs, 1 based on Foata normal form. 2/745 useless extension candidates. Maximal degree in co-relation 846. Up to 30 conditions per place. [2022-11-16 12:28:44,284 INFO L137 encePairwiseOnDemand]: 460/464 looper letters, 15 selfloop transitions, 5 changer transitions 0/428 dead transitions. [2022-11-16 12:28:44,285 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 428 transitions, 1226 flow [2022-11-16 12:28:44,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:28:44,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:28:44,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1533 transitions. [2022-11-16 12:28:44,288 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8259698275862069 [2022-11-16 12:28:44,288 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1533 transitions. [2022-11-16 12:28:44,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1533 transitions. [2022-11-16 12:28:44,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:44,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1533 transitions. [2022-11-16 12:28:44,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 383.25) internal successors, (1533), 4 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states 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 12:28:44,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 464.0) internal successors, (2320), 5 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states 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 12:28:44,296 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 464.0) internal successors, (2320), 5 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states 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 12:28:44,296 INFO L175 Difference]: Start difference. First operand has 462 places, 429 transitions, 1190 flow. Second operand 4 states and 1533 transitions. [2022-11-16 12:28:44,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 428 transitions, 1226 flow [2022-11-16 12:28:44,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 428 transitions, 1180 flow, removed 5 selfloop flow, removed 18 redundant places. [2022-11-16 12:28:44,309 INFO L231 Difference]: Finished difference. Result has 446 places, 428 transitions, 1150 flow [2022-11-16 12:28:44,310 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=464, PETRI_DIFFERENCE_MINUEND_FLOW=1140, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1150, PETRI_PLACES=446, PETRI_TRANSITIONS=428} [2022-11-16 12:28:44,310 INFO L288 CegarLoopForPetriNet]: 396 programPoint places, 50 predicate places. [2022-11-16 12:28:44,311 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 428 transitions, 1150 flow [2022-11-16 12:28:44,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 382.2) internal successors, (1911), 5 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states 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 12:28:44,311 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:44,312 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:28:44,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-16 12:28:44,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3028d96-dd48-4b0c-80ee-9c013a0a78cf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-16 12:28:44,517 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-16 12:28:44,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:44,518 INFO L85 PathProgramCache]: Analyzing trace with hash -133430329, now seen corresponding path program 1 times [2022-11-16 12:28:44,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:44,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377179768] [2022-11-16 12:28:44,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:44,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:44,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:44,988 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 12:28:44,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:44,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377179768] [2022-11-16 12:28:44,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377179768] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:44,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:28:44,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:28:44,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132217525] [2022-11-16 12:28:44,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:44,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 12:28:44,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:44,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 12:28:44,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:28:44,995 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 464 [2022-11-16 12:28:44,998 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 428 transitions, 1150 flow. Second operand has 11 states, 11 states have (on average 330.3636363636364) internal successors, (3634), 11 states have internal predecessors, (3634), 0 states have call successors, (0), 0 states 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 12:28:44,999 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:44,999 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 464 [2022-11-16 12:28:44,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand