./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 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_b6bbe55a-21a3-4052-b3ea-75317da46e2a/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bbe55a-21a3-4052-b3ea-75317da46e2a/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bbe55a-21a3-4052-b3ea-75317da46e2a/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bbe55a-21a3-4052-b3ea-75317da46e2a/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bbe55a-21a3-4052-b3ea-75317da46e2a/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bbe55a-21a3-4052-b3ea-75317da46e2a/bin/uautomizer-uyxdKDjOR8 --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 e9065224c0b163ad014fc0aee4009feab43ed37ef70e06d8d8f3b14d045f755a --- 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-2329fc7 [2022-12-13 21:28:25,724 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 21:28:25,726 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 21:28:25,746 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 21:28:25,747 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 21:28:25,748 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 21:28:25,749 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 21:28:25,750 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 21:28:25,752 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 21:28:25,753 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 21:28:25,754 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 21:28:25,755 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 21:28:25,755 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 21:28:25,756 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 21:28:25,757 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 21:28:25,759 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 21:28:25,759 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 21:28:25,760 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 21:28:25,762 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 21:28:25,764 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 21:28:25,765 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 21:28:25,766 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 21:28:25,767 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 21:28:25,767 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 21:28:25,770 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 21:28:25,770 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 21:28:25,770 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 21:28:25,771 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 21:28:25,771 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 21:28:25,772 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 21:28:25,772 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 21:28:25,772 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 21:28:25,773 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 21:28:25,774 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 21:28:25,774 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 21:28:25,774 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 21:28:25,775 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 21:28:25,775 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 21:28:25,775 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 21:28:25,776 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 21:28:25,776 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 21:28:25,777 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bbe55a-21a3-4052-b3ea-75317da46e2a/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 21:28:25,792 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 21:28:25,792 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 21:28:25,792 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 21:28:25,792 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 21:28:25,793 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 21:28:25,793 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 21:28:25,793 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 21:28:25,794 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 21:28:25,794 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 21:28:25,794 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 21:28:25,794 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 21:28:25,794 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 21:28:25,794 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 21:28:25,794 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 21:28:25,794 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 21:28:25,795 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 21:28:25,795 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 21:28:25,795 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 21:28:25,795 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 21:28:25,795 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 21:28:25,795 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 21:28:25,795 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 21:28:25,795 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 21:28:25,796 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 21:28:25,796 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 21:28:25,796 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 21:28:25,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:28:25,796 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 21:28:25,796 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 21:28:25,796 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 21:28:25,796 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 21:28:25,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 21:28:25,797 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 21:28:25,797 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 21:28:25,797 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 21:28:25,797 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 21:28:25,797 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 21:28:25,797 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_b6bbe55a-21a3-4052-b3ea-75317da46e2a/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bbe55a-21a3-4052-b3ea-75317da46e2a/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e9065224c0b163ad014fc0aee4009feab43ed37ef70e06d8d8f3b14d045f755a [2022-12-13 21:28:25,964 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 21:28:25,983 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 21:28:25,986 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 21:28:25,987 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 21:28:25,987 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 21:28:25,988 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bbe55a-21a3-4052-b3ea-75317da46e2a/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c [2022-12-13 21:28:28,594 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 21:28:28,726 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 21:28:28,726 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bbe55a-21a3-4052-b3ea-75317da46e2a/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c [2022-12-13 21:28:28,731 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bbe55a-21a3-4052-b3ea-75317da46e2a/bin/uautomizer-uyxdKDjOR8/data/263aa7ecd/6d043a2695ce403bb57db925cc12cf2d/FLAG1d02d09d0 [2022-12-13 21:28:28,741 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bbe55a-21a3-4052-b3ea-75317da46e2a/bin/uautomizer-uyxdKDjOR8/data/263aa7ecd/6d043a2695ce403bb57db925cc12cf2d [2022-12-13 21:28:28,743 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 21:28:28,744 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 21:28:28,745 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 21:28:28,745 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 21:28:28,748 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 21:28:28,749 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:28:28" (1/1) ... [2022-12-13 21:28:28,750 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70276fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:28:28, skipping insertion in model container [2022-12-13 21:28:28,750 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:28:28" (1/1) ... [2022-12-13 21:28:28,756 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 21:28:28,769 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:28:28,891 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bbe55a-21a3-4052-b3ea-75317da46e2a/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c[2566,2579] [2022-12-13 21:28:28,895 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:28:28,902 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 21:28:28,917 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bbe55a-21a3-4052-b3ea-75317da46e2a/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c[2566,2579] [2022-12-13 21:28:28,920 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:28:28,930 INFO L208 MainTranslator]: Completed translation [2022-12-13 21:28:28,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:28:28 WrapperNode [2022-12-13 21:28:28,930 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 21:28:28,931 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 21:28:28,931 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 21:28:28,931 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 21:28:28,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:28:28" (1/1) ... [2022-12-13 21:28:28,943 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:28:28" (1/1) ... [2022-12-13 21:28:28,961 INFO L138 Inliner]: procedures = 24, calls = 35, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 184 [2022-12-13 21:28:28,961 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 21:28:28,962 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 21:28:28,962 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 21:28:28,962 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 21:28:28,969 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:28:28" (1/1) ... [2022-12-13 21:28:28,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:28:28" (1/1) ... [2022-12-13 21:28:28,971 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:28:28" (1/1) ... [2022-12-13 21:28:28,971 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:28:28" (1/1) ... [2022-12-13 21:28:28,976 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:28:28" (1/1) ... [2022-12-13 21:28:28,979 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:28:28" (1/1) ... [2022-12-13 21:28:28,980 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:28:28" (1/1) ... [2022-12-13 21:28:28,981 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:28:28" (1/1) ... [2022-12-13 21:28:28,983 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 21:28:28,984 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 21:28:28,984 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 21:28:28,984 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 21:28:28,985 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:28:28" (1/1) ... [2022-12-13 21:28:28,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:28:28,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bbe55a-21a3-4052-b3ea-75317da46e2a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:28:29,008 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bbe55a-21a3-4052-b3ea-75317da46e2a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 21:28:29,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bbe55a-21a3-4052-b3ea-75317da46e2a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 21:28:29,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 21:28:29,044 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 21:28:29,044 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 21:28:29,044 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 21:28:29,044 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 21:28:29,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 21:28:29,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 21:28:29,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 21:28:29,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 21:28:29,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 21:28:29,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 21:28:29,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 21:28:29,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 21:28:29,046 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 21:28:29,134 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 21:28:29,136 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 21:28:29,376 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 21:28:29,386 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 21:28:29,386 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-13 21:28:29,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:28:29 BoogieIcfgContainer [2022-12-13 21:28:29,389 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 21:28:29,391 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 21:28:29,391 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 21:28:29,395 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 21:28:29,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 09:28:28" (1/3) ... [2022-12-13 21:28:29,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3164e82c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:28:29, skipping insertion in model container [2022-12-13 21:28:29,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:28:28" (2/3) ... [2022-12-13 21:28:29,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3164e82c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:28:29, skipping insertion in model container [2022-12-13 21:28:29,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:28:29" (3/3) ... [2022-12-13 21:28:29,398 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-opt-symm.wvr.c [2022-12-13 21:28:29,406 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 21:28:29,418 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 21:28:29,418 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-12-13 21:28:29,418 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 21:28:29,511 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 21:28:29,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 219 places, 231 transitions, 478 flow [2022-12-13 21:28:29,636 INFO L130 PetriNetUnfolder]: 19/229 cut-off events. [2022-12-13 21:28:29,636 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 21:28:29,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238 conditions, 229 events. 19/229 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 263 event pairs, 0 based on Foata normal form. 0/200 useless extension candidates. Maximal degree in co-relation 162. Up to 3 conditions per place. [2022-12-13 21:28:29,641 INFO L82 GeneralOperation]: Start removeDead. Operand has 219 places, 231 transitions, 478 flow [2022-12-13 21:28:29,645 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 200 places, 211 transitions, 434 flow [2022-12-13 21:28:29,648 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 21:28:29,656 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 200 places, 211 transitions, 434 flow [2022-12-13 21:28:29,658 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 200 places, 211 transitions, 434 flow [2022-12-13 21:28:29,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 200 places, 211 transitions, 434 flow [2022-12-13 21:28:29,691 INFO L130 PetriNetUnfolder]: 18/211 cut-off events. [2022-12-13 21:28:29,692 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 21:28:29,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220 conditions, 211 events. 18/211 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 262 event pairs, 0 based on Foata normal form. 0/184 useless extension candidates. Maximal degree in co-relation 162. Up to 3 conditions per place. [2022-12-13 21:28:29,695 INFO L119 LiptonReduction]: Number of co-enabled transitions 4212 [2022-12-13 21:28:34,013 INFO L134 LiptonReduction]: Checked pairs total: 5366 [2022-12-13 21:28:34,013 INFO L136 LiptonReduction]: Total number of compositions: 242 [2022-12-13 21:28:34,028 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:28:34,034 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;@2ac86f90, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:28:34,034 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2022-12-13 21:28:34,037 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-12-13 21:28:34,037 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:28:34,038 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:28:34,038 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 21:28:34,039 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-12-13 21:28:34,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:28:34,044 INFO L85 PathProgramCache]: Analyzing trace with hash 28588, now seen corresponding path program 1 times [2022-12-13 21:28:34,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:28:34,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613250512] [2022-12-13 21:28:34,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:28:34,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:28:34,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:28:34,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:28:34,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:28:34,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613250512] [2022-12-13 21:28:34,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613250512] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:28:34,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:28:34,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:28:34,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974054587] [2022-12-13 21:28:34,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:28:34,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:28:34,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:28:34,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:28:34,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:28:34,256 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 473 [2022-12-13 21:28:34,259 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 209.66666666666666) internal successors, (629), 3 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:34,259 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:28:34,259 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 473 [2022-12-13 21:28:34,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:28:34,395 INFO L130 PetriNetUnfolder]: 285/489 cut-off events. [2022-12-13 21:28:34,396 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2022-12-13 21:28:34,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1016 conditions, 489 events. 285/489 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1862 event pairs, 186 based on Foata normal form. 0/303 useless extension candidates. Maximal degree in co-relation 446. Up to 242 conditions per place. [2022-12-13 21:28:34,401 INFO L137 encePairwiseOnDemand]: 464/473 looper letters, 55 selfloop transitions, 4 changer transitions 0/60 dead transitions. [2022-12-13 21:28:34,401 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 60 transitions, 262 flow [2022-12-13 21:28:34,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:28:34,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:28:34,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 692 transitions. [2022-12-13 21:28:34,413 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48766737138830163 [2022-12-13 21:28:34,414 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 692 transitions. [2022-12-13 21:28:34,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 692 transitions. [2022-12-13 21:28:34,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:28:34,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 692 transitions. [2022-12-13 21:28:34,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 230.66666666666666) internal successors, (692), 3 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:34,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:34,426 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:34,427 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 80 flow. Second operand 3 states and 692 transitions. [2022-12-13 21:28:34,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 60 transitions, 262 flow [2022-12-13 21:28:34,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 60 transitions, 246 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 21:28:34,431 INFO L231 Difference]: Finished difference. Result has 34 places, 36 transitions, 106 flow [2022-12-13 21:28:34,432 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=34, PETRI_TRANSITIONS=36} [2022-12-13 21:28:34,435 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2022-12-13 21:28:34,435 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 36 transitions, 106 flow [2022-12-13 21:28:34,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 209.66666666666666) internal successors, (629), 3 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:34,436 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:28:34,436 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 21:28:34,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 21:28:34,436 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-12-13 21:28:34,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:28:34,437 INFO L85 PathProgramCache]: Analyzing trace with hash 888063, now seen corresponding path program 1 times [2022-12-13 21:28:34,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:28:34,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209321214] [2022-12-13 21:28:34,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:28:34,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:28:34,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:28:34,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:28:34,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:28:34,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209321214] [2022-12-13 21:28:34,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209321214] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:28:34,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432818344] [2022-12-13 21:28:34,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:28:34,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:28:34,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bbe55a-21a3-4052-b3ea-75317da46e2a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:28:34,519 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bbe55a-21a3-4052-b3ea-75317da46e2a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:28:34,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bbe55a-21a3-4052-b3ea-75317da46e2a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 21:28:34,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:28:34,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 21:28:34,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:28:34,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:28:34,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:28:34,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:28:34,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432818344] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:28:34,617 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:28:34,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-12-13 21:28:34,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785936582] [2022-12-13 21:28:34,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:28:34,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:28:34,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:28:34,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:28:34,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:28:34,672 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 473 [2022-12-13 21:28:34,674 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 36 transitions, 106 flow. Second operand has 7 states, 7 states have (on average 210.14285714285714) internal successors, (1471), 7 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:34,675 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:28:34,675 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 473 [2022-12-13 21:28:34,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:28:34,954 INFO L130 PetriNetUnfolder]: 717/1221 cut-off events. [2022-12-13 21:28:34,954 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-12-13 21:28:34,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2494 conditions, 1221 events. 717/1221 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 5608 event pairs, 465 based on Foata normal form. 0/772 useless extension candidates. Maximal degree in co-relation 1951. Up to 240 conditions per place. [2022-12-13 21:28:34,961 INFO L137 encePairwiseOnDemand]: 465/473 looper letters, 125 selfloop transitions, 21 changer transitions 0/147 dead transitions. [2022-12-13 21:28:34,961 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 147 transitions, 672 flow [2022-12-13 21:28:34,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:28:34,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:28:34,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1615 transitions. [2022-12-13 21:28:34,975 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48776804590758077 [2022-12-13 21:28:34,975 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1615 transitions. [2022-12-13 21:28:34,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1615 transitions. [2022-12-13 21:28:34,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:28:34,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1615 transitions. [2022-12-13 21:28:34,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 230.71428571428572) internal successors, (1615), 7 states have internal predecessors, (1615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:34,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 473.0) internal successors, (3784), 8 states have internal predecessors, (3784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:34,985 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 473.0) internal successors, (3784), 8 states have internal predecessors, (3784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:34,985 INFO L175 Difference]: Start difference. First operand has 34 places, 36 transitions, 106 flow. Second operand 7 states and 1615 transitions. [2022-12-13 21:28:34,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 147 transitions, 672 flow [2022-12-13 21:28:34,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 147 transitions, 658 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 21:28:34,989 INFO L231 Difference]: Finished difference. Result has 41 places, 51 transitions, 237 flow [2022-12-13 21:28:34,989 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=237, PETRI_PLACES=41, PETRI_TRANSITIONS=51} [2022-12-13 21:28:34,989 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, 6 predicate places. [2022-12-13 21:28:34,989 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 51 transitions, 237 flow [2022-12-13 21:28:34,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 210.14285714285714) internal successors, (1471), 7 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:34,990 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:28:34,990 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2022-12-13 21:28:34,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bbe55a-21a3-4052-b3ea-75317da46e2a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 21:28:35,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bbe55a-21a3-4052-b3ea-75317da46e2a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:28:35,191 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-12-13 21:28:35,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:28:35,192 INFO L85 PathProgramCache]: Analyzing trace with hash 27530796, now seen corresponding path program 1 times [2022-12-13 21:28:35,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:28:35,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657694856] [2022-12-13 21:28:35,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:28:35,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:28:35,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:28:35,234 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 21:28:35,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:28:35,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657694856] [2022-12-13 21:28:35,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657694856] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:28:35,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:28:35,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:28:35,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797513213] [2022-12-13 21:28:35,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:28:35,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:28:35,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:28:35,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:28:35,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:28:35,253 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 473 [2022-12-13 21:28:35,254 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 51 transitions, 237 flow. Second operand has 3 states, 3 states have (on average 210.33333333333334) internal successors, (631), 3 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:35,254 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:28:35,254 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 473 [2022-12-13 21:28:35,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:28:35,380 INFO L130 PetriNetUnfolder]: 711/1213 cut-off events. [2022-12-13 21:28:35,380 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-12-13 21:28:35,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2496 conditions, 1213 events. 711/1213 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5776 event pairs, 465 based on Foata normal form. 2/758 useless extension candidates. Maximal degree in co-relation 1478. Up to 1183 conditions per place. [2022-12-13 21:28:35,384 INFO L137 encePairwiseOnDemand]: 470/473 looper letters, 41 selfloop transitions, 1 changer transitions 0/43 dead transitions. [2022-12-13 21:28:35,384 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 43 transitions, 267 flow [2022-12-13 21:28:35,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:28:35,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:28:35,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 659 transitions. [2022-12-13 21:28:35,386 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46441155743481327 [2022-12-13 21:28:35,386 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 659 transitions. [2022-12-13 21:28:35,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 659 transitions. [2022-12-13 21:28:35,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:28:35,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 659 transitions. [2022-12-13 21:28:35,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 219.66666666666666) internal successors, (659), 3 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:35,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:35,389 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:35,389 INFO L175 Difference]: Start difference. First operand has 41 places, 51 transitions, 237 flow. Second operand 3 states and 659 transitions. [2022-12-13 21:28:35,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 43 transitions, 267 flow [2022-12-13 21:28:35,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 43 transitions, 248 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-12-13 21:28:35,391 INFO L231 Difference]: Finished difference. Result has 39 places, 43 transitions, 166 flow [2022-12-13 21:28:35,391 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=39, PETRI_TRANSITIONS=43} [2022-12-13 21:28:35,391 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, 4 predicate places. [2022-12-13 21:28:35,392 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 43 transitions, 166 flow [2022-12-13 21:28:35,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 210.33333333333334) internal successors, (631), 3 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:35,392 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:28:35,392 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-12-13 21:28:35,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 21:28:35,392 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-12-13 21:28:35,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:28:35,393 INFO L85 PathProgramCache]: Analyzing trace with hash 687348939, now seen corresponding path program 2 times [2022-12-13 21:28:35,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:28:35,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362985852] [2022-12-13 21:28:35,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:28:35,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:28:35,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:28:35,474 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:28:35,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:28:35,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362985852] [2022-12-13 21:28:35,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362985852] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:28:35,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213752200] [2022-12-13 21:28:35,475 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 21:28:35,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:28:35,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bbe55a-21a3-4052-b3ea-75317da46e2a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:28:35,476 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bbe55a-21a3-4052-b3ea-75317da46e2a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:28:35,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bbe55a-21a3-4052-b3ea-75317da46e2a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 21:28:35,525 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 21:28:35,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:28:35,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 21:28:35,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:28:35,538 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 21:28:35,539 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:28:35,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213752200] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:28:35,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:28:35,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-12-13 21:28:35,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397446725] [2022-12-13 21:28:35,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:28:35,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:28:35,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:28:35,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:28:35,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:28:35,558 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 473 [2022-12-13 21:28:35,559 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 43 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:35,559 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:28:35,560 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 473 [2022-12-13 21:28:35,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:28:35,691 INFO L130 PetriNetUnfolder]: 711/1211 cut-off events. [2022-12-13 21:28:35,692 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-12-13 21:28:35,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2475 conditions, 1211 events. 711/1211 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5758 event pairs, 465 based on Foata normal form. 2/757 useless extension candidates. Maximal degree in co-relation 2463. Up to 1181 conditions per place. [2022-12-13 21:28:35,695 INFO L137 encePairwiseOnDemand]: 470/473 looper letters, 39 selfloop transitions, 1 changer transitions 0/41 dead transitions. [2022-12-13 21:28:35,695 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 41 transitions, 226 flow [2022-12-13 21:28:35,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:28:35,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:28:35,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 663 transitions. [2022-12-13 21:28:35,699 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46723044397463004 [2022-12-13 21:28:35,699 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 663 transitions. [2022-12-13 21:28:35,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 663 transitions. [2022-12-13 21:28:35,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:28:35,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 663 transitions. [2022-12-13 21:28:35,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 221.0) internal successors, (663), 3 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:35,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:35,703 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:35,703 INFO L175 Difference]: Start difference. First operand has 39 places, 43 transitions, 166 flow. Second operand 3 states and 663 transitions. [2022-12-13 21:28:35,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 41 transitions, 226 flow [2022-12-13 21:28:35,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 41 transitions, 199 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-12-13 21:28:35,704 INFO L231 Difference]: Finished difference. Result has 34 places, 41 transitions, 121 flow [2022-12-13 21:28:35,704 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=121, PETRI_PLACES=34, PETRI_TRANSITIONS=41} [2022-12-13 21:28:35,705 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2022-12-13 21:28:35,705 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 41 transitions, 121 flow [2022-12-13 21:28:35,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:35,705 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:28:35,706 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:28:35,710 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bbe55a-21a3-4052-b3ea-75317da46e2a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 21:28:35,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bbe55a-21a3-4052-b3ea-75317da46e2a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:28:35,906 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-12-13 21:28:35,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:28:35,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1177836807, now seen corresponding path program 1 times [2022-12-13 21:28:35,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:28:35,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294597734] [2022-12-13 21:28:35,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:28:35,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:28:35,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:28:35,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:28:35,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:28:35,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294597734] [2022-12-13 21:28:35,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294597734] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:28:35,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:28:35,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:28:35,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531252085] [2022-12-13 21:28:35,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:28:35,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:28:35,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:28:35,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:28:35,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:28:35,990 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 473 [2022-12-13 21:28:35,991 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 41 transitions, 121 flow. Second operand has 3 states, 3 states have (on average 209.66666666666666) internal successors, (629), 3 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:35,991 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:28:35,991 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 473 [2022-12-13 21:28:35,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:28:36,122 INFO L130 PetriNetUnfolder]: 569/971 cut-off events. [2022-12-13 21:28:36,123 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-12-13 21:28:36,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1975 conditions, 971 events. 569/971 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4374 event pairs, 372 based on Foata normal form. 1/604 useless extension candidates. Maximal degree in co-relation 1966. Up to 943 conditions per place. [2022-12-13 21:28:36,127 INFO L137 encePairwiseOnDemand]: 468/473 looper letters, 32 selfloop transitions, 7 changer transitions 0/40 dead transitions. [2022-12-13 21:28:36,127 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 40 transitions, 195 flow [2022-12-13 21:28:36,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:28:36,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:28:36,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 653 transitions. [2022-12-13 21:28:36,130 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46018322762508806 [2022-12-13 21:28:36,130 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 653 transitions. [2022-12-13 21:28:36,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 653 transitions. [2022-12-13 21:28:36,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:28:36,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 653 transitions. [2022-12-13 21:28:36,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 217.66666666666666) internal successors, (653), 3 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:36,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:36,134 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:36,134 INFO L175 Difference]: Start difference. First operand has 34 places, 41 transitions, 121 flow. Second operand 3 states and 653 transitions. [2022-12-13 21:28:36,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 40 transitions, 195 flow [2022-12-13 21:28:36,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 40 transitions, 194 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:28:36,135 INFO L231 Difference]: Finished difference. Result has 36 places, 40 transitions, 139 flow [2022-12-13 21:28:36,135 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=36, PETRI_TRANSITIONS=40} [2022-12-13 21:28:36,135 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, 1 predicate places. [2022-12-13 21:28:36,135 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 40 transitions, 139 flow [2022-12-13 21:28:36,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 209.66666666666666) internal successors, (629), 3 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:36,136 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:28:36,136 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:28:36,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 21:28:36,136 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-12-13 21:28:36,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:28:36,136 INFO L85 PathProgramCache]: Analyzing trace with hash -921912980, now seen corresponding path program 1 times [2022-12-13 21:28:36,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:28:36,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658968287] [2022-12-13 21:28:36,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:28:36,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:28:36,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:28:36,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 21:28:36,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:28:36,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658968287] [2022-12-13 21:28:36,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658968287] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:28:36,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:28:36,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:28:36,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129717040] [2022-12-13 21:28:36,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:28:36,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:28:36,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:28:36,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:28:36,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:28:36,192 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 473 [2022-12-13 21:28:36,193 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 40 transitions, 139 flow. Second operand has 3 states, 3 states have (on average 216.33333333333334) internal successors, (649), 3 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:36,193 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:28:36,193 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 473 [2022-12-13 21:28:36,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:28:36,349 INFO L130 PetriNetUnfolder]: 809/1367 cut-off events. [2022-12-13 21:28:36,349 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-12-13 21:28:36,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2781 conditions, 1367 events. 809/1367 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 6744 event pairs, 372 based on Foata normal form. 0/863 useless extension candidates. Maximal degree in co-relation 2770. Up to 948 conditions per place. [2022-12-13 21:28:36,353 INFO L137 encePairwiseOnDemand]: 470/473 looper letters, 55 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2022-12-13 21:28:36,354 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 58 transitions, 291 flow [2022-12-13 21:28:36,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:28:36,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:28:36,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 686 transitions. [2022-12-13 21:28:36,355 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4834390415785765 [2022-12-13 21:28:36,355 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 686 transitions. [2022-12-13 21:28:36,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 686 transitions. [2022-12-13 21:28:36,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:28:36,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 686 transitions. [2022-12-13 21:28:36,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 228.66666666666666) internal successors, (686), 3 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:36,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:36,358 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:36,358 INFO L175 Difference]: Start difference. First operand has 36 places, 40 transitions, 139 flow. Second operand 3 states and 686 transitions. [2022-12-13 21:28:36,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 58 transitions, 291 flow [2022-12-13 21:28:36,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 58 transitions, 277 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 21:28:36,359 INFO L231 Difference]: Finished difference. Result has 37 places, 41 transitions, 137 flow [2022-12-13 21:28:36,359 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=137, PETRI_PLACES=37, PETRI_TRANSITIONS=41} [2022-12-13 21:28:36,360 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, 2 predicate places. [2022-12-13 21:28:36,360 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 41 transitions, 137 flow [2022-12-13 21:28:36,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 216.33333333333334) internal successors, (649), 3 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:36,360 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:28:36,360 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:28:36,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 21:28:36,360 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-12-13 21:28:36,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:28:36,361 INFO L85 PathProgramCache]: Analyzing trace with hash -920851912, now seen corresponding path program 1 times [2022-12-13 21:28:36,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:28:36,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351682185] [2022-12-13 21:28:36,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:28:36,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:28:36,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:28:36,394 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 21:28:36,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:28:36,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351682185] [2022-12-13 21:28:36,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351682185] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:28:36,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:28:36,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:28:36,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237963758] [2022-12-13 21:28:36,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:28:36,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:28:36,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:28:36,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:28:36,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:28:36,406 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 473 [2022-12-13 21:28:36,407 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 41 transitions, 137 flow. Second operand has 3 states, 3 states have (on average 216.33333333333334) internal successors, (649), 3 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:36,407 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:28:36,407 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 473 [2022-12-13 21:28:36,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:28:36,629 INFO L130 PetriNetUnfolder]: 1369/2367 cut-off events. [2022-12-13 21:28:36,629 INFO L131 PetriNetUnfolder]: For 552/552 co-relation queries the response was YES. [2022-12-13 21:28:36,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5307 conditions, 2367 events. 1369/2367 cut-off events. For 552/552 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 13435 event pairs, 564 based on Foata normal form. 0/1783 useless extension candidates. Maximal degree in co-relation 5296. Up to 1344 conditions per place. [2022-12-13 21:28:36,636 INFO L137 encePairwiseOnDemand]: 469/473 looper letters, 58 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2022-12-13 21:28:36,636 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 61 transitions, 310 flow [2022-12-13 21:28:36,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:28:36,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:28:36,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 688 transitions. [2022-12-13 21:28:36,637 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486 [2022-12-13 21:28:36,637 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 688 transitions. [2022-12-13 21:28:36,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 688 transitions. [2022-12-13 21:28:36,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:28:36,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 688 transitions. [2022-12-13 21:28:36,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 229.33333333333334) internal successors, (688), 3 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:36,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:36,640 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:36,640 INFO L175 Difference]: Start difference. First operand has 37 places, 41 transitions, 137 flow. Second operand 3 states and 688 transitions. [2022-12-13 21:28:36,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 61 transitions, 310 flow [2022-12-13 21:28:36,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 61 transitions, 306 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:28:36,642 INFO L231 Difference]: Finished difference. Result has 39 places, 42 transitions, 149 flow [2022-12-13 21:28:36,642 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=149, PETRI_PLACES=39, PETRI_TRANSITIONS=42} [2022-12-13 21:28:36,643 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, 4 predicate places. [2022-12-13 21:28:36,643 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 42 transitions, 149 flow [2022-12-13 21:28:36,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 216.33333333333334) internal successors, (649), 3 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:36,643 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:28:36,643 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:28:36,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 21:28:36,644 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-12-13 21:28:36,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:28:36,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1485469581, now seen corresponding path program 1 times [2022-12-13 21:28:36,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:28:36,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948087769] [2022-12-13 21:28:36,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:28:36,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:28:36,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:28:36,705 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 21:28:36,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:28:36,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948087769] [2022-12-13 21:28:36,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948087769] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:28:36,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236170074] [2022-12-13 21:28:36,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:28:36,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:28:36,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bbe55a-21a3-4052-b3ea-75317da46e2a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:28:36,707 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bbe55a-21a3-4052-b3ea-75317da46e2a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:28:36,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bbe55a-21a3-4052-b3ea-75317da46e2a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 21:28:36,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:28:36,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 21:28:36,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:28:36,803 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 21:28:36,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:28:36,818 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 21:28:36,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236170074] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:28:36,818 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:28:36,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2022-12-13 21:28:36,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454090627] [2022-12-13 21:28:36,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:28:36,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 21:28:36,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:28:36,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 21:28:36,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:28:36,878 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 473 [2022-12-13 21:28:36,879 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 42 transitions, 149 flow. Second operand has 8 states, 8 states have (on average 205.125) internal successors, (1641), 8 states have internal predecessors, (1641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:36,879 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:28:36,879 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 473 [2022-12-13 21:28:36,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:28:37,006 INFO L130 PetriNetUnfolder]: 343/581 cut-off events. [2022-12-13 21:28:37,006 INFO L131 PetriNetUnfolder]: For 120/120 co-relation queries the response was YES. [2022-12-13 21:28:37,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1395 conditions, 581 events. 343/581 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2151 event pairs, 241 based on Foata normal form. 6/467 useless extension candidates. Maximal degree in co-relation 1383. Up to 565 conditions per place. [2022-12-13 21:28:37,009 INFO L137 encePairwiseOnDemand]: 468/473 looper letters, 28 selfloop transitions, 10 changer transitions 0/39 dead transitions. [2022-12-13 21:28:37,009 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 39 transitions, 210 flow [2022-12-13 21:28:37,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 21:28:37,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 21:28:37,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1260 transitions. [2022-12-13 21:28:37,012 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4439746300211416 [2022-12-13 21:28:37,013 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1260 transitions. [2022-12-13 21:28:37,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1260 transitions. [2022-12-13 21:28:37,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:28:37,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1260 transitions. [2022-12-13 21:28:37,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:37,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 473.0) internal successors, (3311), 7 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:37,021 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 473.0) internal successors, (3311), 7 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:37,021 INFO L175 Difference]: Start difference. First operand has 39 places, 42 transitions, 149 flow. Second operand 6 states and 1260 transitions. [2022-12-13 21:28:37,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 39 transitions, 210 flow [2022-12-13 21:28:37,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 39 transitions, 208 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:28:37,023 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 170 flow [2022-12-13 21:28:37,023 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=170, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2022-12-13 21:28:37,023 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, 11 predicate places. [2022-12-13 21:28:37,024 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 170 flow [2022-12-13 21:28:37,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 205.125) internal successors, (1641), 8 states have internal predecessors, (1641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:37,024 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:28:37,025 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:28:37,029 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bbe55a-21a3-4052-b3ea-75317da46e2a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 21:28:37,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bbe55a-21a3-4052-b3ea-75317da46e2a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:28:37,225 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-12-13 21:28:37,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:28:37,226 INFO L85 PathProgramCache]: Analyzing trace with hash 2025674976, now seen corresponding path program 2 times [2022-12-13 21:28:37,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:28:37,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532895512] [2022-12-13 21:28:37,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:28:37,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:28:37,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:28:37,352 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 21:28:37,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:28:37,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532895512] [2022-12-13 21:28:37,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532895512] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:28:37,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772940752] [2022-12-13 21:28:37,353 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 21:28:37,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:28:37,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bbe55a-21a3-4052-b3ea-75317da46e2a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:28:37,354 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bbe55a-21a3-4052-b3ea-75317da46e2a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:28:37,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bbe55a-21a3-4052-b3ea-75317da46e2a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 21:28:37,435 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 21:28:37,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:28:37,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 21:28:37,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:28:37,489 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 21:28:37,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:28:37,525 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 21:28:37,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772940752] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:28:37,526 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:28:37,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-12-13 21:28:37,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447349705] [2022-12-13 21:28:37,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:28:37,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 21:28:37,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:28:37,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 21:28:37,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2022-12-13 21:28:37,640 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 473 [2022-12-13 21:28:37,641 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 170 flow. Second operand has 13 states, 13 states have (on average 204.69230769230768) internal successors, (2661), 13 states have internal predecessors, (2661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:37,641 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:28:37,641 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 473 [2022-12-13 21:28:37,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:28:37,747 INFO L130 PetriNetUnfolder]: 343/583 cut-off events. [2022-12-13 21:28:37,747 INFO L131 PetriNetUnfolder]: For 103/103 co-relation queries the response was YES. [2022-12-13 21:28:37,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1409 conditions, 583 events. 343/583 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2138 event pairs, 241 based on Foata normal form. 2/465 useless extension candidates. Maximal degree in co-relation 1393. Up to 565 conditions per place. [2022-12-13 21:28:37,750 INFO L137 encePairwiseOnDemand]: 468/473 looper letters, 28 selfloop transitions, 12 changer transitions 0/41 dead transitions. [2022-12-13 21:28:37,750 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 41 transitions, 258 flow [2022-12-13 21:28:37,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:28:37,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:28:37,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1461 transitions. [2022-12-13 21:28:37,754 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44125641800060406 [2022-12-13 21:28:37,754 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1461 transitions. [2022-12-13 21:28:37,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1461 transitions. [2022-12-13 21:28:37,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:28:37,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1461 transitions. [2022-12-13 21:28:37,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 208.71428571428572) internal successors, (1461), 7 states have internal predecessors, (1461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:37,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 473.0) internal successors, (3784), 8 states have internal predecessors, (3784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:37,763 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 473.0) internal successors, (3784), 8 states have internal predecessors, (3784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:37,763 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 170 flow. Second operand 7 states and 1461 transitions. [2022-12-13 21:28:37,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 41 transitions, 258 flow [2022-12-13 21:28:37,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 41 transitions, 238 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-12-13 21:28:37,765 INFO L231 Difference]: Finished difference. Result has 48 places, 41 transitions, 192 flow [2022-12-13 21:28:37,766 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=192, PETRI_PLACES=48, PETRI_TRANSITIONS=41} [2022-12-13 21:28:37,766 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, 13 predicate places. [2022-12-13 21:28:37,766 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 41 transitions, 192 flow [2022-12-13 21:28:37,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 204.69230769230768) internal successors, (2661), 13 states have internal predecessors, (2661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:37,768 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:28:37,768 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:28:37,773 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bbe55a-21a3-4052-b3ea-75317da46e2a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 21:28:37,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bbe55a-21a3-4052-b3ea-75317da46e2a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:28:37,969 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-12-13 21:28:37,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:28:37,969 INFO L85 PathProgramCache]: Analyzing trace with hash -415854003, now seen corresponding path program 3 times [2022-12-13 21:28:37,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:28:37,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870283962] [2022-12-13 21:28:37,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:28:37,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:28:37,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:28:38,046 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 21:28:38,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:28:38,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870283962] [2022-12-13 21:28:38,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870283962] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:28:38,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279214285] [2022-12-13 21:28:38,047 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 21:28:38,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:28:38,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bbe55a-21a3-4052-b3ea-75317da46e2a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:28:38,048 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bbe55a-21a3-4052-b3ea-75317da46e2a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:28:38,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bbe55a-21a3-4052-b3ea-75317da46e2a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 21:28:38,127 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 21:28:38,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:28:38,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 21:28:38,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:28:38,137 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 21:28:38,137 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:28:38,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279214285] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:28:38,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:28:38,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-12-13 21:28:38,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505013062] [2022-12-13 21:28:38,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:28:38,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:28:38,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:28:38,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:28:38,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:28:38,152 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 473 [2022-12-13 21:28:38,153 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 41 transitions, 192 flow. Second operand has 4 states, 4 states have (on average 215.75) internal successors, (863), 4 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:38,153 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:28:38,153 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 473 [2022-12-13 21:28:38,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:28:38,266 INFO L130 PetriNetUnfolder]: 292/500 cut-off events. [2022-12-13 21:28:38,266 INFO L131 PetriNetUnfolder]: For 68/68 co-relation queries the response was YES. [2022-12-13 21:28:38,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1213 conditions, 500 events. 292/500 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1798 event pairs, 36 based on Foata normal form. 0/423 useless extension candidates. Maximal degree in co-relation 1196. Up to 198 conditions per place. [2022-12-13 21:28:38,268 INFO L137 encePairwiseOnDemand]: 470/473 looper letters, 69 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2022-12-13 21:28:38,268 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 72 transitions, 417 flow [2022-12-13 21:28:38,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:28:38,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 21:28:38,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 911 transitions. [2022-12-13 21:28:38,270 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48150105708245244 [2022-12-13 21:28:38,270 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 911 transitions. [2022-12-13 21:28:38,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 911 transitions. [2022-12-13 21:28:38,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:28:38,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 911 transitions. [2022-12-13 21:28:38,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 227.75) internal successors, (911), 4 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:38,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 473.0) internal successors, (2365), 5 states have internal predecessors, (2365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:38,274 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 473.0) internal successors, (2365), 5 states have internal predecessors, (2365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:38,274 INFO L175 Difference]: Start difference. First operand has 48 places, 41 transitions, 192 flow. Second operand 4 states and 911 transitions. [2022-12-13 21:28:38,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 72 transitions, 417 flow [2022-12-13 21:28:38,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 72 transitions, 397 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-12-13 21:28:38,276 INFO L231 Difference]: Finished difference. Result has 46 places, 40 transitions, 172 flow [2022-12-13 21:28:38,276 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=172, PETRI_PLACES=46, PETRI_TRANSITIONS=40} [2022-12-13 21:28:38,277 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, 11 predicate places. [2022-12-13 21:28:38,277 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 40 transitions, 172 flow [2022-12-13 21:28:38,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 215.75) internal successors, (863), 4 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:38,278 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:28:38,278 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:28:38,283 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bbe55a-21a3-4052-b3ea-75317da46e2a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 21:28:38,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bbe55a-21a3-4052-b3ea-75317da46e2a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 21:28:38,479 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-12-13 21:28:38,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:28:38,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1343400583, now seen corresponding path program 1 times [2022-12-13 21:28:38,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:28:38,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558807412] [2022-12-13 21:28:38,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:28:38,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:28:38,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:28:38,537 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 21:28:38,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:28:38,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558807412] [2022-12-13 21:28:38,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558807412] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:28:38,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:28:38,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:28:38,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333525608] [2022-12-13 21:28:38,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:28:38,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:28:38,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:28:38,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:28:38,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:28:38,543 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 473 [2022-12-13 21:28:38,544 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 40 transitions, 172 flow. Second operand has 3 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:38,544 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:28:38,544 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 473 [2022-12-13 21:28:38,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:28:38,650 INFO L130 PetriNetUnfolder]: 356/652 cut-off events. [2022-12-13 21:28:38,650 INFO L131 PetriNetUnfolder]: For 269/269 co-relation queries the response was YES. [2022-12-13 21:28:38,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1624 conditions, 652 events. 356/652 cut-off events. For 269/269 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2688 event pairs, 200 based on Foata normal form. 24/594 useless extension candidates. Maximal degree in co-relation 1607. Up to 446 conditions per place. [2022-12-13 21:28:38,653 INFO L137 encePairwiseOnDemand]: 468/473 looper letters, 50 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2022-12-13 21:28:38,653 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 53 transitions, 315 flow [2022-12-13 21:28:38,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:28:38,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:28:38,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 675 transitions. [2022-12-13 21:28:38,654 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47568710359408034 [2022-12-13 21:28:38,654 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 675 transitions. [2022-12-13 21:28:38,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 675 transitions. [2022-12-13 21:28:38,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:28:38,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 675 transitions. [2022-12-13 21:28:38,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:38,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:38,658 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:38,658 INFO L175 Difference]: Start difference. First operand has 46 places, 40 transitions, 172 flow. Second operand 3 states and 675 transitions. [2022-12-13 21:28:38,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 53 transitions, 315 flow [2022-12-13 21:28:38,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 53 transitions, 309 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 21:28:38,660 INFO L231 Difference]: Finished difference. Result has 48 places, 41 transitions, 189 flow [2022-12-13 21:28:38,660 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=189, PETRI_PLACES=48, PETRI_TRANSITIONS=41} [2022-12-13 21:28:38,661 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, 13 predicate places. [2022-12-13 21:28:38,661 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 41 transitions, 189 flow [2022-12-13 21:28:38,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:38,661 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:28:38,661 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:28:38,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 21:28:38,662 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-12-13 21:28:38,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:28:38,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1054649866, now seen corresponding path program 1 times [2022-12-13 21:28:38,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:28:38,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122566971] [2022-12-13 21:28:38,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:28:38,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:28:38,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:28:38,853 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 21:28:38,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:28:38,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122566971] [2022-12-13 21:28:38,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122566971] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:28:38,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:28:38,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:28:38,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813661942] [2022-12-13 21:28:38,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:28:38,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:28:38,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:28:38,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:28:38,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:28:38,861 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 473 [2022-12-13 21:28:38,863 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 41 transitions, 189 flow. Second operand has 4 states, 4 states have (on average 214.25) internal successors, (857), 4 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:38,863 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:28:38,863 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 473 [2022-12-13 21:28:38,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:28:38,952 INFO L130 PetriNetUnfolder]: 356/640 cut-off events. [2022-12-13 21:28:38,952 INFO L131 PetriNetUnfolder]: For 286/286 co-relation queries the response was YES. [2022-12-13 21:28:38,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1731 conditions, 640 events. 356/640 cut-off events. For 286/286 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2566 event pairs, 162 based on Foata normal form. 0/590 useless extension candidates. Maximal degree in co-relation 1713. Up to 403 conditions per place. [2022-12-13 21:28:38,955 INFO L137 encePairwiseOnDemand]: 470/473 looper letters, 52 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2022-12-13 21:28:38,955 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 55 transitions, 354 flow [2022-12-13 21:28:38,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:28:38,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 21:28:38,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 880 transitions. [2022-12-13 21:28:38,957 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46511627906976744 [2022-12-13 21:28:38,957 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 880 transitions. [2022-12-13 21:28:38,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 880 transitions. [2022-12-13 21:28:38,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:28:38,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 880 transitions. [2022-12-13 21:28:38,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:38,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 473.0) internal successors, (2365), 5 states have internal predecessors, (2365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:38,960 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 473.0) internal successors, (2365), 5 states have internal predecessors, (2365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:38,960 INFO L175 Difference]: Start difference. First operand has 48 places, 41 transitions, 189 flow. Second operand 4 states and 880 transitions. [2022-12-13 21:28:38,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 55 transitions, 354 flow [2022-12-13 21:28:38,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 55 transitions, 350 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:28:38,962 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 189 flow [2022-12-13 21:28:38,962 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=189, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2022-12-13 21:28:38,962 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, 14 predicate places. [2022-12-13 21:28:38,963 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 189 flow [2022-12-13 21:28:38,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 214.25) internal successors, (857), 4 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:38,963 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:28:38,963 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:28:38,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 21:28:38,963 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-12-13 21:28:38,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:28:38,964 INFO L85 PathProgramCache]: Analyzing trace with hash 834705840, now seen corresponding path program 1 times [2022-12-13 21:28:38,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:28:38,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666451617] [2022-12-13 21:28:38,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:28:38,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:28:38,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:28:39,146 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 21:28:39,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:28:39,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666451617] [2022-12-13 21:28:39,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666451617] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:28:39,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:28:39,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:28:39,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286876280] [2022-12-13 21:28:39,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:28:39,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:28:39,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:28:39,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:28:39,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:28:39,155 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 473 [2022-12-13 21:28:39,156 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 189 flow. Second operand has 4 states, 4 states have (on average 214.25) internal successors, (857), 4 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:39,156 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:28:39,156 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 473 [2022-12-13 21:28:39,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:28:39,252 INFO L130 PetriNetUnfolder]: 356/632 cut-off events. [2022-12-13 21:28:39,252 INFO L131 PetriNetUnfolder]: For 265/265 co-relation queries the response was YES. [2022-12-13 21:28:39,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1800 conditions, 632 events. 356/632 cut-off events. For 265/265 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2525 event pairs, 162 based on Foata normal form. 8/590 useless extension candidates. Maximal degree in co-relation 1781. Up to 403 conditions per place. [2022-12-13 21:28:39,254 INFO L137 encePairwiseOnDemand]: 470/473 looper letters, 38 selfloop transitions, 2 changer transitions 13/54 dead transitions. [2022-12-13 21:28:39,254 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 54 transitions, 350 flow [2022-12-13 21:28:39,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:28:39,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 21:28:39,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 879 transitions. [2022-12-13 21:28:39,255 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4645877378435518 [2022-12-13 21:28:39,256 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 879 transitions. [2022-12-13 21:28:39,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 879 transitions. [2022-12-13 21:28:39,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:28:39,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 879 transitions. [2022-12-13 21:28:39,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 219.75) internal successors, (879), 4 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:39,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 473.0) internal successors, (2365), 5 states have internal predecessors, (2365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:39,259 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 473.0) internal successors, (2365), 5 states have internal predecessors, (2365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:39,259 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 189 flow. Second operand 4 states and 879 transitions. [2022-12-13 21:28:39,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 54 transitions, 350 flow [2022-12-13 21:28:39,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 54 transitions, 347 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 21:28:39,261 INFO L231 Difference]: Finished difference. Result has 49 places, 32 transitions, 164 flow [2022-12-13 21:28:39,261 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=164, PETRI_PLACES=49, PETRI_TRANSITIONS=32} [2022-12-13 21:28:39,261 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, 14 predicate places. [2022-12-13 21:28:39,261 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 32 transitions, 164 flow [2022-12-13 21:28:39,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 214.25) internal successors, (857), 4 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:39,262 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:28:39,262 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:28:39,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 21:28:39,262 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-12-13 21:28:39,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:28:39,263 INFO L85 PathProgramCache]: Analyzing trace with hash 244707239, now seen corresponding path program 1 times [2022-12-13 21:28:39,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:28:39,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848210323] [2022-12-13 21:28:39,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:28:39,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:28:39,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:28:39,314 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-12-13 21:28:39,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:28:39,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848210323] [2022-12-13 21:28:39,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848210323] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:28:39,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:28:39,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:28:39,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562255312] [2022-12-13 21:28:39,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:28:39,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:28:39,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:28:39,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:28:39,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:28:39,323 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 473 [2022-12-13 21:28:39,324 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 32 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:39,324 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:28:39,324 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 473 [2022-12-13 21:28:39,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:28:39,380 INFO L130 PetriNetUnfolder]: 173/330 cut-off events. [2022-12-13 21:28:39,380 INFO L131 PetriNetUnfolder]: For 124/124 co-relation queries the response was YES. [2022-12-13 21:28:39,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 940 conditions, 330 events. 173/330 cut-off events. For 124/124 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1123 event pairs, 19 based on Foata normal form. 0/318 useless extension candidates. Maximal degree in co-relation 921. Up to 232 conditions per place. [2022-12-13 21:28:39,381 INFO L137 encePairwiseOnDemand]: 469/473 looper letters, 34 selfloop transitions, 4 changer transitions 0/39 dead transitions. [2022-12-13 21:28:39,381 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 39 transitions, 261 flow [2022-12-13 21:28:39,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:28:39,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:28:39,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 662 transitions. [2022-12-13 21:28:39,383 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4665257223396758 [2022-12-13 21:28:39,383 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 662 transitions. [2022-12-13 21:28:39,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 662 transitions. [2022-12-13 21:28:39,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:28:39,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 662 transitions. [2022-12-13 21:28:39,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.66666666666666) internal successors, (662), 3 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:39,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:39,385 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:39,385 INFO L175 Difference]: Start difference. First operand has 49 places, 32 transitions, 164 flow. Second operand 3 states and 662 transitions. [2022-12-13 21:28:39,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 39 transitions, 261 flow [2022-12-13 21:28:39,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 39 transitions, 251 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-12-13 21:28:39,387 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 165 flow [2022-12-13 21:28:39,387 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=165, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2022-12-13 21:28:39,387 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, 7 predicate places. [2022-12-13 21:28:39,388 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 165 flow [2022-12-13 21:28:39,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:39,388 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:28:39,388 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:28:39,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 21:28:39,388 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-12-13 21:28:39,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:28:39,389 INFO L85 PathProgramCache]: Analyzing trace with hash 244707211, now seen corresponding path program 1 times [2022-12-13 21:28:39,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:28:39,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504129854] [2022-12-13 21:28:39,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:28:39,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:28:39,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:28:39,434 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 21:28:39,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:28:39,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504129854] [2022-12-13 21:28:39,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504129854] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:28:39,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:28:39,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:28:39,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887961633] [2022-12-13 21:28:39,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:28:39,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:28:39,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:28:39,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:28:39,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:28:39,445 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 473 [2022-12-13 21:28:39,445 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 165 flow. Second operand has 3 states, 3 states have (on average 218.0) internal successors, (654), 3 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:39,445 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:28:39,445 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 473 [2022-12-13 21:28:39,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:28:39,499 INFO L130 PetriNetUnfolder]: 156/301 cut-off events. [2022-12-13 21:28:39,499 INFO L131 PetriNetUnfolder]: For 162/162 co-relation queries the response was YES. [2022-12-13 21:28:39,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 899 conditions, 301 events. 156/301 cut-off events. For 162/162 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1013 event pairs, 4 based on Foata normal form. 12/313 useless extension candidates. Maximal degree in co-relation 882. Up to 244 conditions per place. [2022-12-13 21:28:39,500 INFO L137 encePairwiseOnDemand]: 471/473 looper letters, 0 selfloop transitions, 0 changer transitions 38/38 dead transitions. [2022-12-13 21:28:39,500 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 38 transitions, 259 flow [2022-12-13 21:28:39,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:28:39,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:28:39,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 663 transitions. [2022-12-13 21:28:39,501 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46723044397463004 [2022-12-13 21:28:39,501 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 663 transitions. [2022-12-13 21:28:39,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 663 transitions. [2022-12-13 21:28:39,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:28:39,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 663 transitions. [2022-12-13 21:28:39,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 221.0) internal successors, (663), 3 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:39,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:39,504 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:39,504 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 165 flow. Second operand 3 states and 663 transitions. [2022-12-13 21:28:39,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 38 transitions, 259 flow [2022-12-13 21:28:39,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 38 transitions, 255 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:28:39,505 INFO L231 Difference]: Finished difference. Result has 42 places, 0 transitions, 0 flow [2022-12-13 21:28:39,505 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=42, PETRI_TRANSITIONS=0} [2022-12-13 21:28:39,505 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, 7 predicate places. [2022-12-13 21:28:39,506 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 0 transitions, 0 flow [2022-12-13 21:28:39,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 218.0) internal successors, (654), 3 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:28:39,508 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2022-12-13 21:28:39,508 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2022-12-13 21:28:39,509 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2022-12-13 21:28:39,509 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2022-12-13 21:28:39,509 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2022-12-13 21:28:39,509 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2022-12-13 21:28:39,509 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 16 remaining) [2022-12-13 21:28:39,509 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 16 remaining) [2022-12-13 21:28:39,509 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2022-12-13 21:28:39,509 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2022-12-13 21:28:39,509 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 16 remaining) [2022-12-13 21:28:39,509 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 16 remaining) [2022-12-13 21:28:39,509 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2022-12-13 21:28:39,509 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2022-12-13 21:28:39,509 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2022-12-13 21:28:39,509 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2022-12-13 21:28:39,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 21:28:39,510 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:28:39,514 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 21:28:39,514 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 21:28:39,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 09:28:39 BasicIcfg [2022-12-13 21:28:39,516 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 21:28:39,517 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 21:28:39,517 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 21:28:39,517 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 21:28:39,517 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:28:29" (3/4) ... [2022-12-13 21:28:39,519 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 21:28:39,524 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-12-13 21:28:39,524 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-12-13 21:28:39,527 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2022-12-13 21:28:39,528 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 21:28:39,528 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 21:28:39,528 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 21:28:39,558 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bbe55a-21a3-4052-b3ea-75317da46e2a/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 21:28:39,558 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 21:28:39,559 INFO L158 Benchmark]: Toolchain (without parser) took 10814.57ms. Allocated memory was 130.0MB in the beginning and 157.3MB in the end (delta: 27.3MB). Free memory was 96.4MB in the beginning and 93.6MB in the end (delta: 2.8MB). Peak memory consumption was 31.2MB. Max. memory is 16.1GB. [2022-12-13 21:28:39,559 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 130.0MB. Free memory is still 72.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 21:28:39,559 INFO L158 Benchmark]: CACSL2BoogieTranslator took 185.54ms. Allocated memory is still 130.0MB. Free memory was 95.9MB in the beginning and 84.4MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 21:28:39,559 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.01ms. Allocated memory is still 130.0MB. Free memory was 84.4MB in the beginning and 82.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 21:28:39,560 INFO L158 Benchmark]: Boogie Preprocessor took 21.61ms. Allocated memory is still 130.0MB. Free memory was 82.3MB in the beginning and 80.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 21:28:39,560 INFO L158 Benchmark]: RCFGBuilder took 404.94ms. Allocated memory is still 130.0MB. Free memory was 80.8MB in the beginning and 61.4MB in the end (delta: 19.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-12-13 21:28:39,560 INFO L158 Benchmark]: TraceAbstraction took 10125.05ms. Allocated memory was 130.0MB in the beginning and 157.3MB in the end (delta: 27.3MB). Free memory was 60.8MB in the beginning and 96.8MB in the end (delta: -35.9MB). Peak memory consumption was 59.1MB. Max. memory is 16.1GB. [2022-12-13 21:28:39,561 INFO L158 Benchmark]: Witness Printer took 41.48ms. Allocated memory is still 157.3MB. Free memory was 96.8MB in the beginning and 93.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 21:28:39,562 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 130.0MB. Free memory is still 72.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 185.54ms. Allocated memory is still 130.0MB. Free memory was 95.9MB in the beginning and 84.4MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.01ms. Allocated memory is still 130.0MB. Free memory was 84.4MB in the beginning and 82.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.61ms. Allocated memory is still 130.0MB. Free memory was 82.3MB in the beginning and 80.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 404.94ms. Allocated memory is still 130.0MB. Free memory was 80.8MB in the beginning and 61.4MB in the end (delta: 19.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 10125.05ms. Allocated memory was 130.0MB in the beginning and 157.3MB in the end (delta: 27.3MB). Free memory was 60.8MB in the beginning and 96.8MB in the end (delta: -35.9MB). Peak memory consumption was 59.1MB. Max. memory is 16.1GB. * Witness Printer took 41.48ms. Allocated memory is still 157.3MB. Free memory was 96.8MB in the beginning and 93.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.4s, 200 PlacesBefore, 35 PlacesAfterwards, 211 TransitionsBefore, 34 TransitionsAfterwards, 4212 CoEnabledTransitionPairs, 7 FixpointIterations, 107 TrivialSequentialCompositions, 83 ConcurrentSequentialCompositions, 21 TrivialYvCompositions, 19 ConcurrentYvCompositions, 12 ChoiceCompositions, 242 TotalNumberOfCompositions, 5366 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4562, independent: 4491, independent conditional: 0, independent unconditional: 4491, dependent: 71, dependent conditional: 0, dependent unconditional: 71, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2452, independent: 2439, independent conditional: 0, independent unconditional: 2439, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4562, independent: 2052, independent conditional: 0, independent unconditional: 2052, dependent: 58, dependent conditional: 0, dependent unconditional: 58, unknown: 2452, unknown conditional: 0, unknown unconditional: 2452] , Statistics on independence cache: Total cache size (in pairs): 65, Positive cache size: 60, Positive conditional cache size: 0, Positive unconditional cache size: 60, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 72]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 72]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 285 locations, 16 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 10.0s, OverallIterations: 15, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 956 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 710 mSDsluCounter, 24 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 124 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1654 IncrementalHoareTripleChecker+Invalid, 1778 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 124 mSolverCounterUnsat, 24 mSDtfsCounter, 1654 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 118 GetRequests, 71 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=237occurred in iteration=2, InterpolantAutomatonStates: 59, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 267 NumberOfCodeBlocks, 257 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 275 ConstructedInterpolants, 0 QuantifiedInterpolants, 568 SizeOfPredicates, 3 NumberOfNonLiveVariables, 888 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 23 InterpolantComputations, 12 PerfectInterpolantSequences, 280/327 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 21:28:39,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bbe55a-21a3-4052-b3ea-75317da46e2a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE