./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae54f089-5867-468e-b247-586f486f25da/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae54f089-5867-468e-b247-586f486f25da/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae54f089-5867-468e-b247-586f486f25da/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae54f089-5867-468e-b247-586f486f25da/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae54f089-5867-468e-b247-586f486f25da/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae54f089-5867-468e-b247-586f486f25da/bin/uautomizer-ug76WZFUDN --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 d721a74d879c75d156b7dfbd9383140c70ef6831602ea84a0f8988cd7fdc0c32 --- 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-6b4ec56 [2022-11-20 12:07:23,847 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:07:23,849 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:07:23,869 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:07:23,870 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:07:23,871 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:07:23,872 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:07:23,874 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:07:23,876 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:07:23,877 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:07:23,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:07:23,883 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:07:23,886 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:07:23,889 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:07:23,891 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:07:23,894 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:07:23,896 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:07:23,901 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:07:23,903 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:07:23,907 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:07:23,912 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:07:23,914 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:07:23,916 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:07:23,918 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:07:23,922 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:07:23,927 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:07:23,927 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:07:23,928 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:07:23,930 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:07:23,931 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:07:23,933 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:07:23,934 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:07:23,935 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:07:23,936 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:07:23,938 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:07:23,939 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:07:23,939 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:07:23,940 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:07:23,940 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:07:23,943 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:07:23,944 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:07:23,944 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae54f089-5867-468e-b247-586f486f25da/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 12:07:23,984 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:07:23,985 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:07:23,985 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:07:23,986 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:07:23,987 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:07:23,987 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:07:23,987 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:07:23,988 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:07:23,988 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:07:23,988 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:07:23,989 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:07:23,990 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:07:23,990 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:07:23,990 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:07:23,990 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:07:23,990 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:07:23,991 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:07:23,991 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:07:23,991 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 12:07:23,991 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:07:23,992 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:07:23,992 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:07:23,992 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:07:23,992 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:07:23,993 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:07:23,993 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:07:23,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:07:23,993 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:07:23,994 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:07:23,994 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:07:23,994 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:07:23,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:07:23,995 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:07:23,995 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:07:23,996 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:07:23,996 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae54f089-5867-468e-b247-586f486f25da/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae54f089-5867-468e-b247-586f486f25da/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d721a74d879c75d156b7dfbd9383140c70ef6831602ea84a0f8988cd7fdc0c32 [2022-11-20 12:07:24,290 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:07:24,325 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:07:24,328 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:07:24,329 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:07:24,329 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:07:24,330 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae54f089-5867-468e-b247-586f486f25da/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c [2022-11-20 12:07:27,334 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:07:27,606 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:07:27,606 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae54f089-5867-468e-b247-586f486f25da/sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c [2022-11-20 12:07:27,614 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae54f089-5867-468e-b247-586f486f25da/bin/uautomizer-ug76WZFUDN/data/e32676e7d/b432785abffd4632aa574024c551d5f8/FLAG6f72c1c4b [2022-11-20 12:07:27,628 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae54f089-5867-468e-b247-586f486f25da/bin/uautomizer-ug76WZFUDN/data/e32676e7d/b432785abffd4632aa574024c551d5f8 [2022-11-20 12:07:27,631 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:07:27,634 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:07:27,635 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:07:27,635 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:07:27,641 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:07:27,641 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:07:27" (1/1) ... [2022-11-20 12:07:27,643 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60f04f06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:07:27, skipping insertion in model container [2022-11-20 12:07:27,643 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:07:27" (1/1) ... [2022-11-20 12:07:27,651 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:07:27,676 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:07:27,848 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_ae54f089-5867-468e-b247-586f486f25da/sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c[3770,3783] [2022-11-20 12:07:27,856 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:07:27,865 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:07:27,893 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_ae54f089-5867-468e-b247-586f486f25da/sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c[3770,3783] [2022-11-20 12:07:27,899 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:07:27,915 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:07:27,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:07:27 WrapperNode [2022-11-20 12:07:27,916 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:07:27,917 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:07:27,918 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:07:27,918 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:07:27,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:07:27" (1/1) ... [2022-11-20 12:07:27,937 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:07:27" (1/1) ... [2022-11-20 12:07:27,973 INFO L138 Inliner]: procedures = 27, calls = 73, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 297 [2022-11-20 12:07:27,974 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:07:27,975 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:07:27,975 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:07:27,975 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:07:27,985 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:07:27" (1/1) ... [2022-11-20 12:07:27,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:07:27" (1/1) ... [2022-11-20 12:07:27,990 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:07:27" (1/1) ... [2022-11-20 12:07:27,990 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:07:27" (1/1) ... [2022-11-20 12:07:27,999 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:07:27" (1/1) ... [2022-11-20 12:07:28,004 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:07:27" (1/1) ... [2022-11-20 12:07:28,006 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:07:27" (1/1) ... [2022-11-20 12:07:28,008 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:07:27" (1/1) ... [2022-11-20 12:07:28,012 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:07:28,020 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:07:28,020 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:07:28,021 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:07:28,022 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:07:27" (1/1) ... [2022-11-20 12:07:28,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:07:28,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae54f089-5867-468e-b247-586f486f25da/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:07:28,057 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae54f089-5867-468e-b247-586f486f25da/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:07:28,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae54f089-5867-468e-b247-586f486f25da/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:07:28,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:07:28,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:07:28,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:07:28,127 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:07:28,127 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 12:07:28,129 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 12:07:28,129 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 12:07:28,129 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 12:07:28,129 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 12:07:28,130 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 12:07:28,130 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-20 12:07:28,130 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-20 12:07:28,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:07:28,130 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 12:07:28,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 12:07:28,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:07:28,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:07:28,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:07:28,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:07:28,133 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 12:07:28,280 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:07:28,282 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:07:28,951 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:07:29,554 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:07:29,555 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-20 12:07:29,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:07:29 BoogieIcfgContainer [2022-11-20 12:07:29,558 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:07:29,561 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:07:29,561 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:07:29,564 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:07:29,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:07:27" (1/3) ... [2022-11-20 12:07:29,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d38363a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:07:29, skipping insertion in model container [2022-11-20 12:07:29,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:07:27" (2/3) ... [2022-11-20 12:07:29,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d38363a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:07:29, skipping insertion in model container [2022-11-20 12:07:29,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:07:29" (3/3) ... [2022-11-20 12:07:29,570 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-equiv.wvr.c [2022-11-20 12:07:29,580 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 12:07:29,591 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:07:29,591 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2022-11-20 12:07:29,591 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 12:07:29,789 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2022-11-20 12:07:29,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 235 places, 236 transitions, 516 flow [2022-11-20 12:07:30,014 INFO L130 PetriNetUnfolder]: 14/221 cut-off events. [2022-11-20 12:07:30,014 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-20 12:07:30,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240 conditions, 221 events. 14/221 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 323 event pairs, 0 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 186. Up to 3 conditions per place. [2022-11-20 12:07:30,022 INFO L82 GeneralOperation]: Start removeDead. Operand has 235 places, 236 transitions, 516 flow [2022-11-20 12:07:30,035 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 202 places, 202 transitions, 431 flow [2022-11-20 12:07:30,052 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:07:30,061 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;@6dc330c6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:07:30,062 INFO L358 AbstractCegarLoop]: Starting to check reachability of 58 error locations. [2022-11-20 12:07:30,145 INFO L130 PetriNetUnfolder]: 1/55 cut-off events. [2022-11-20 12:07:30,145 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:07:30,146 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:07:30,147 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:07:30,147 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-20 12:07:30,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:07:30,153 INFO L85 PathProgramCache]: Analyzing trace with hash 2109387708, now seen corresponding path program 1 times [2022-11-20 12:07:30,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:07:30,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338943114] [2022-11-20 12:07:30,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:07:30,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:07:30,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:30,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:07:30,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:07:30,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338943114] [2022-11-20 12:07:30,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338943114] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:07:30,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:07:30,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:07:30,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515275519] [2022-11-20 12:07:30,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:07:30,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:07:30,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:07:30,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:07:30,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:07:30,815 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 238 [2022-11-20 12:07:30,826 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 202 transitions, 431 flow. Second operand has 5 states, 5 states have (on average 154.4) internal successors, (772), 5 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:07:30,826 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:07:30,827 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 238 [2022-11-20 12:07:30,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:07:32,130 INFO L130 PetriNetUnfolder]: 1731/2933 cut-off events. [2022-11-20 12:07:32,131 INFO L131 PetriNetUnfolder]: For 471/471 co-relation queries the response was YES. [2022-11-20 12:07:32,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6066 conditions, 2933 events. 1731/2933 cut-off events. For 471/471 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 18158 event pairs, 1376 based on Foata normal form. 268/1671 useless extension candidates. Maximal degree in co-relation 5880. Up to 2585 conditions per place. [2022-11-20 12:07:32,163 INFO L137 encePairwiseOnDemand]: 216/238 looper letters, 48 selfloop transitions, 5 changer transitions 3/185 dead transitions. [2022-11-20 12:07:32,164 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 185 transitions, 509 flow [2022-11-20 12:07:32,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:07:32,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:07:32,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 838 transitions. [2022-11-20 12:07:32,179 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.704201680672269 [2022-11-20 12:07:32,180 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 838 transitions. [2022-11-20 12:07:32,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 838 transitions. [2022-11-20 12:07:32,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:07:32,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 838 transitions. [2022-11-20 12:07:32,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 167.6) internal successors, (838), 5 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:07:32,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 238.0) internal successors, (1428), 6 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:07:32,198 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 238.0) internal successors, (1428), 6 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:07:32,200 INFO L175 Difference]: Start difference. First operand has 202 places, 202 transitions, 431 flow. Second operand 5 states and 838 transitions. [2022-11-20 12:07:32,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 185 transitions, 509 flow [2022-11-20 12:07:32,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 185 transitions, 492 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-20 12:07:32,209 INFO L231 Difference]: Finished difference. Result has 189 places, 182 transitions, 384 flow [2022-11-20 12:07:32,211 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=384, PETRI_PLACES=189, PETRI_TRANSITIONS=182} [2022-11-20 12:07:32,214 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, -13 predicate places. [2022-11-20 12:07:32,214 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 182 transitions, 384 flow [2022-11-20 12:07:32,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 154.4) internal successors, (772), 5 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:07:32,215 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:07:32,216 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:07:32,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:07:32,216 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-20 12:07:32,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:07:32,217 INFO L85 PathProgramCache]: Analyzing trace with hash 966510475, now seen corresponding path program 1 times [2022-11-20 12:07:32,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:07:32,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500776161] [2022-11-20 12:07:32,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:07:32,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:07:32,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:32,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:07:32,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:07:32,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500776161] [2022-11-20 12:07:32,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500776161] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:07:32,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:07:32,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:07:32,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457972543] [2022-11-20 12:07:32,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:07:32,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:07:32,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:07:32,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:07:32,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:07:32,314 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 238 [2022-11-20 12:07:32,315 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 182 transitions, 384 flow. Second operand has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:07:32,315 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:07:32,315 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 238 [2022-11-20 12:07:32,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:07:33,375 INFO L130 PetriNetUnfolder]: 1731/2929 cut-off events. [2022-11-20 12:07:33,376 INFO L131 PetriNetUnfolder]: For 101/101 co-relation queries the response was YES. [2022-11-20 12:07:33,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5772 conditions, 2929 events. 1731/2929 cut-off events. For 101/101 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 18157 event pairs, 1376 based on Foata normal form. 0/1403 useless extension candidates. Maximal degree in co-relation 5706. Up to 2576 conditions per place. [2022-11-20 12:07:33,404 INFO L137 encePairwiseOnDemand]: 234/238 looper letters, 41 selfloop transitions, 3 changer transitions 0/181 dead transitions. [2022-11-20 12:07:33,404 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 181 transitions, 470 flow [2022-11-20 12:07:33,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:07:33,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:07:33,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 721 transitions. [2022-11-20 12:07:33,407 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7573529411764706 [2022-11-20 12:07:33,407 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 721 transitions. [2022-11-20 12:07:33,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 721 transitions. [2022-11-20 12:07:33,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:07:33,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 721 transitions. [2022-11-20 12:07:33,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 180.25) internal successors, (721), 4 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:07:33,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 238.0) internal successors, (1190), 5 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:07:33,414 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 238.0) internal successors, (1190), 5 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:07:33,414 INFO L175 Difference]: Start difference. First operand has 189 places, 182 transitions, 384 flow. Second operand 4 states and 721 transitions. [2022-11-20 12:07:33,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 181 transitions, 470 flow [2022-11-20 12:07:33,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 181 transitions, 460 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:07:33,423 INFO L231 Difference]: Finished difference. Result has 184 places, 181 transitions, 378 flow [2022-11-20 12:07:33,423 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=378, PETRI_PLACES=184, PETRI_TRANSITIONS=181} [2022-11-20 12:07:33,424 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, -18 predicate places. [2022-11-20 12:07:33,425 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 181 transitions, 378 flow [2022-11-20 12:07:33,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:07:33,425 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:07:33,425 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:07:33,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:07:33,426 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-20 12:07:33,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:07:33,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1268055398, now seen corresponding path program 1 times [2022-11-20 12:07:33,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:07:33,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791505318] [2022-11-20 12:07:33,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:07:33,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:07:33,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:33,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:07:33,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:07:33,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791505318] [2022-11-20 12:07:33,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791505318] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:07:33,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:07:33,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:07:33,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089263769] [2022-11-20 12:07:33,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:07:33,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:07:33,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:07:33,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:07:33,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:07:33,631 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 238 [2022-11-20 12:07:33,632 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 181 transitions, 378 flow. Second operand has 4 states, 4 states have (on average 169.5) internal successors, (678), 4 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:07:33,632 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:07:33,633 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 238 [2022-11-20 12:07:33,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:07:35,505 INFO L130 PetriNetUnfolder]: 3461/5780 cut-off events. [2022-11-20 12:07:35,505 INFO L131 PetriNetUnfolder]: For 198/198 co-relation queries the response was YES. [2022-11-20 12:07:35,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11458 conditions, 5780 events. 3461/5780 cut-off events. For 198/198 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 39220 event pairs, 2752 based on Foata normal form. 0/2738 useless extension candidates. Maximal degree in co-relation 11426. Up to 2582 conditions per place. [2022-11-20 12:07:35,565 INFO L137 encePairwiseOnDemand]: 232/238 looper letters, 86 selfloop transitions, 4 changer transitions 0/224 dead transitions. [2022-11-20 12:07:35,566 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 224 transitions, 654 flow [2022-11-20 12:07:35,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:07:35,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:07:35,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 932 transitions. [2022-11-20 12:07:35,569 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7831932773109244 [2022-11-20 12:07:35,569 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 932 transitions. [2022-11-20 12:07:35,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 932 transitions. [2022-11-20 12:07:35,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:07:35,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 932 transitions. [2022-11-20 12:07:35,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 186.4) internal successors, (932), 5 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:07:35,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 238.0) internal successors, (1428), 6 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:07:35,575 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 238.0) internal successors, (1428), 6 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:07:35,576 INFO L175 Difference]: Start difference. First operand has 184 places, 181 transitions, 378 flow. Second operand 5 states and 932 transitions. [2022-11-20 12:07:35,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 224 transitions, 654 flow [2022-11-20 12:07:35,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 224 transitions, 648 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:07:35,580 INFO L231 Difference]: Finished difference. Result has 188 places, 184 transitions, 402 flow [2022-11-20 12:07:35,581 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=402, PETRI_PLACES=188, PETRI_TRANSITIONS=184} [2022-11-20 12:07:35,582 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, -14 predicate places. [2022-11-20 12:07:35,582 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 184 transitions, 402 flow [2022-11-20 12:07:35,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 169.5) internal successors, (678), 4 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:07:35,582 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:07:35,583 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:07:35,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 12:07:35,583 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-20 12:07:35,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:07:35,584 INFO L85 PathProgramCache]: Analyzing trace with hash 910809127, now seen corresponding path program 1 times [2022-11-20 12:07:35,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:07:35,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048799794] [2022-11-20 12:07:35,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:07:35,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:07:35,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:35,745 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:07:35,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:07:35,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048799794] [2022-11-20 12:07:35,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048799794] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:07:35,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524300903] [2022-11-20 12:07:35,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:07:35,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:07:35,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae54f089-5867-468e-b247-586f486f25da/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:07:35,752 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae54f089-5867-468e-b247-586f486f25da/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:07:35,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae54f089-5867-468e-b247-586f486f25da/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:07:35,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:35,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:07:35,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:07:36,009 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:07:36,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:07:36,086 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:07:36,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524300903] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:07:36,087 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:07:36,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-20 12:07:36,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70267658] [2022-11-20 12:07:36,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:07:36,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:07:36,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:07:36,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:07:36,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:07:36,097 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 238 [2022-11-20 12:07:36,099 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 184 transitions, 402 flow. Second operand has 12 states, 12 states have (on average 170.66666666666666) internal successors, (2048), 12 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:07:36,100 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:07:36,100 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 238 [2022-11-20 12:07:36,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:07:40,570 INFO L130 PetriNetUnfolder]: 8651/14335 cut-off events. [2022-11-20 12:07:40,571 INFO L131 PetriNetUnfolder]: For 506/506 co-relation queries the response was YES. [2022-11-20 12:07:40,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28540 conditions, 14335 events. 8651/14335 cut-off events. For 506/506 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 106007 event pairs, 6880 based on Foata normal form. 3/6750 useless extension candidates. Maximal degree in co-relation 22764. Up to 2577 conditions per place. [2022-11-20 12:07:40,725 INFO L137 encePairwiseOnDemand]: 231/238 looper letters, 203 selfloop transitions, 18 changer transitions 0/355 dead transitions. [2022-11-20 12:07:40,725 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 355 transitions, 1248 flow [2022-11-20 12:07:40,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 12:07:40,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 12:07:40,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3248 transitions. [2022-11-20 12:07:40,736 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7581699346405228 [2022-11-20 12:07:40,736 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3248 transitions. [2022-11-20 12:07:40,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3248 transitions. [2022-11-20 12:07:40,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:07:40,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3248 transitions. [2022-11-20 12:07:40,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 180.44444444444446) internal successors, (3248), 18 states have internal predecessors, (3248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:07:40,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 238.0) internal successors, (4522), 19 states have internal predecessors, (4522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:07:40,761 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 238.0) internal successors, (4522), 19 states have internal predecessors, (4522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:07:40,761 INFO L175 Difference]: Start difference. First operand has 188 places, 184 transitions, 402 flow. Second operand 18 states and 3248 transitions. [2022-11-20 12:07:40,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 355 transitions, 1248 flow [2022-11-20 12:07:40,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 355 transitions, 1246 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:07:40,771 INFO L231 Difference]: Finished difference. Result has 208 places, 196 transitions, 506 flow [2022-11-20 12:07:40,771 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=506, PETRI_PLACES=208, PETRI_TRANSITIONS=196} [2022-11-20 12:07:40,773 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 6 predicate places. [2022-11-20 12:07:40,773 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 196 transitions, 506 flow [2022-11-20 12:07:40,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 170.66666666666666) internal successors, (2048), 12 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:07:40,775 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:07:40,776 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:07:40,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae54f089-5867-468e-b247-586f486f25da/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:07:40,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae54f089-5867-468e-b247-586f486f25da/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:07:40,986 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-20 12:07:40,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:07:40,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1829687088, now seen corresponding path program 1 times [2022-11-20 12:07:40,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:07:40,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112269003] [2022-11-20 12:07:40,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:07:40,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:07:41,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:41,176 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:07:41,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:07:41,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112269003] [2022-11-20 12:07:41,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112269003] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:07:41,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613183019] [2022-11-20 12:07:41,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:07:41,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:07:41,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae54f089-5867-468e-b247-586f486f25da/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:07:41,180 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae54f089-5867-468e-b247-586f486f25da/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:07:41,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae54f089-5867-468e-b247-586f486f25da/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:07:41,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:41,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:07:41,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:07:41,384 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:07:41,384 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:07:41,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613183019] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:07:41,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:07:41,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 12:07:41,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255448811] [2022-11-20 12:07:41,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:07:41,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:07:41,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:07:41,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:07:41,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:07:41,388 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 238 [2022-11-20 12:07:41,390 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 196 transitions, 506 flow. Second operand has 6 states, 6 states have (on average 170.33333333333334) internal successors, (1022), 6 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:07:41,391 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:07:41,391 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 238 [2022-11-20 12:07:41,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:07:45,123 INFO L130 PetriNetUnfolder]: 8651/14331 cut-off events. [2022-11-20 12:07:45,124 INFO L131 PetriNetUnfolder]: For 542/542 co-relation queries the response was YES. [2022-11-20 12:07:45,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28558 conditions, 14331 events. 8651/14331 cut-off events. For 542/542 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 106065 event pairs, 6880 based on Foata normal form. 4/6747 useless extension candidates. Maximal degree in co-relation 22836. Up to 10292 conditions per place. [2022-11-20 12:07:45,258 INFO L137 encePairwiseOnDemand]: 233/238 looper letters, 87 selfloop transitions, 11 changer transitions 0/232 dead transitions. [2022-11-20 12:07:45,258 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 232 transitions, 767 flow [2022-11-20 12:07:45,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:07:45,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:07:45,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1266 transitions. [2022-11-20 12:07:45,262 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7599039615846338 [2022-11-20 12:07:45,263 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1266 transitions. [2022-11-20 12:07:45,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1266 transitions. [2022-11-20 12:07:45,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:07:45,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1266 transitions. [2022-11-20 12:07:45,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 180.85714285714286) internal successors, (1266), 7 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:07:45,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 238.0) internal successors, (1904), 8 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:07:45,274 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 238.0) internal successors, (1904), 8 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:07:45,274 INFO L175 Difference]: Start difference. First operand has 208 places, 196 transitions, 506 flow. Second operand 7 states and 1266 transitions. [2022-11-20 12:07:45,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 232 transitions, 767 flow [2022-11-20 12:07:45,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 232 transitions, 735 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-20 12:07:45,282 INFO L231 Difference]: Finished difference. Result has 204 places, 192 transitions, 469 flow [2022-11-20 12:07:45,283 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=469, PETRI_PLACES=204, PETRI_TRANSITIONS=192} [2022-11-20 12:07:45,286 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 2 predicate places. [2022-11-20 12:07:45,286 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 192 transitions, 469 flow [2022-11-20 12:07:45,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 170.33333333333334) internal successors, (1022), 6 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:07:45,287 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:07:45,287 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:07:45,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae54f089-5867-468e-b247-586f486f25da/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:07:45,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae54f089-5867-468e-b247-586f486f25da/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:07:45,493 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-20 12:07:45,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:07:45,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1936803777, now seen corresponding path program 1 times [2022-11-20 12:07:45,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:07:45,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965031796] [2022-11-20 12:07:45,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:07:45,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:07:45,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:45,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:07:45,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:07:45,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965031796] [2022-11-20 12:07:45,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965031796] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:07:45,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:07:45,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:07:45,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988116555] [2022-11-20 12:07:45,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:07:45,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:07:45,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:07:45,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:07:45,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:07:45,614 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 238 [2022-11-20 12:07:45,615 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 192 transitions, 469 flow. Second operand has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:07:45,615 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:07:45,615 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 238 [2022-11-20 12:07:45,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:07:49,029 INFO L130 PetriNetUnfolder]: 9696/18891 cut-off events. [2022-11-20 12:07:49,029 INFO L131 PetriNetUnfolder]: For 712/712 co-relation queries the response was YES. [2022-11-20 12:07:49,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34802 conditions, 18891 events. 9696/18891 cut-off events. For 712/712 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 163727 event pairs, 6185 based on Foata normal form. 0/10391 useless extension candidates. Maximal degree in co-relation 27838. Up to 12997 conditions per place. [2022-11-20 12:07:49,204 INFO L137 encePairwiseOnDemand]: 231/238 looper letters, 52 selfloop transitions, 5 changer transitions 0/212 dead transitions. [2022-11-20 12:07:49,204 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 212 transitions, 631 flow [2022-11-20 12:07:49,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:07:49,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:07:49,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 593 transitions. [2022-11-20 12:07:49,207 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8305322128851541 [2022-11-20 12:07:49,208 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 593 transitions. [2022-11-20 12:07:49,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 593 transitions. [2022-11-20 12:07:49,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:07:49,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 593 transitions. [2022-11-20 12:07:49,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.66666666666666) internal successors, (593), 3 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:07:49,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:07:49,215 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:07:49,215 INFO L175 Difference]: Start difference. First operand has 204 places, 192 transitions, 469 flow. Second operand 3 states and 593 transitions. [2022-11-20 12:07:49,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 212 transitions, 631 flow [2022-11-20 12:07:49,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 212 transitions, 617 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:07:49,225 INFO L231 Difference]: Finished difference. Result has 202 places, 194 transitions, 482 flow [2022-11-20 12:07:49,225 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=482, PETRI_PLACES=202, PETRI_TRANSITIONS=194} [2022-11-20 12:07:49,228 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 0 predicate places. [2022-11-20 12:07:49,228 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 194 transitions, 482 flow [2022-11-20 12:07:49,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:07:49,229 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:07:49,229 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:07:49,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 12:07:49,230 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-20 12:07:49,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:07:49,230 INFO L85 PathProgramCache]: Analyzing trace with hash -510152212, now seen corresponding path program 1 times [2022-11-20 12:07:49,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:07:49,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303534833] [2022-11-20 12:07:49,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:07:49,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:07:49,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:49,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:07:49,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:07:49,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303534833] [2022-11-20 12:07:49,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303534833] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:07:49,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:07:49,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:07:49,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695881788] [2022-11-20 12:07:49,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:07:49,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:07:49,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:07:49,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:07:49,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:07:49,332 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 238 [2022-11-20 12:07:49,333 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 194 transitions, 482 flow. Second operand has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:07:49,333 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:07:49,333 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 238 [2022-11-20 12:07:49,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:07:53,793 INFO L130 PetriNetUnfolder]: 11636/22621 cut-off events. [2022-11-20 12:07:53,793 INFO L131 PetriNetUnfolder]: For 2388/2388 co-relation queries the response was YES. [2022-11-20 12:07:53,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44459 conditions, 22621 events. 11636/22621 cut-off events. For 2388/2388 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 206049 event pairs, 7205 based on Foata normal form. 0/12646 useless extension candidates. Maximal degree in co-relation 35564. Up to 14387 conditions per place. [2022-11-20 12:07:54,000 INFO L137 encePairwiseOnDemand]: 233/238 looper letters, 63 selfloop transitions, 4 changer transitions 0/222 dead transitions. [2022-11-20 12:07:54,001 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 222 transitions, 696 flow [2022-11-20 12:07:54,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:07:54,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:07:54,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 598 transitions. [2022-11-20 12:07:54,011 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8375350140056023 [2022-11-20 12:07:54,011 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 598 transitions. [2022-11-20 12:07:54,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 598 transitions. [2022-11-20 12:07:54,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:07:54,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 598 transitions. [2022-11-20 12:07:54,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.33333333333334) internal successors, (598), 3 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:07:54,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:07:54,020 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:07:54,021 INFO L175 Difference]: Start difference. First operand has 202 places, 194 transitions, 482 flow. Second operand 3 states and 598 transitions. [2022-11-20 12:07:54,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 222 transitions, 696 flow [2022-11-20 12:07:54,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 222 transitions, 688 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:07:54,036 INFO L231 Difference]: Finished difference. Result has 204 places, 195 transitions, 495 flow [2022-11-20 12:07:54,037 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=495, PETRI_PLACES=204, PETRI_TRANSITIONS=195} [2022-11-20 12:07:54,037 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 2 predicate places. [2022-11-20 12:07:54,038 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 195 transitions, 495 flow [2022-11-20 12:07:54,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:07:54,038 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:07:54,039 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:07:54,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 12:07:54,039 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-20 12:07:54,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:07:54,044 INFO L85 PathProgramCache]: Analyzing trace with hash 88626159, now seen corresponding path program 1 times [2022-11-20 12:07:54,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:07:54,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281324258] [2022-11-20 12:07:54,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:07:54,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:07:54,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:54,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:07:54,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:07:54,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281324258] [2022-11-20 12:07:54,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281324258] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:07:54,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:07:54,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:07:54,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121182514] [2022-11-20 12:07:54,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:07:54,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:07:54,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:07:54,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:07:54,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:07:54,349 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 238 [2022-11-20 12:07:54,352 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 195 transitions, 495 flow. Second operand has 7 states, 7 states have (on average 161.85714285714286) internal successors, (1133), 7 states have internal predecessors, (1133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:07:54,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:07:54,352 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 238 [2022-11-20 12:07:54,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:07:58,101 INFO L130 PetriNetUnfolder]: 9081/18780 cut-off events. [2022-11-20 12:07:58,101 INFO L131 PetriNetUnfolder]: For 3838/3838 co-relation queries the response was YES. [2022-11-20 12:07:58,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37506 conditions, 18780 events. 9081/18780 cut-off events. For 3838/3838 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 167957 event pairs, 4613 based on Foata normal form. 360/11896 useless extension candidates. Maximal degree in co-relation 36304. Up to 8573 conditions per place. [2022-11-20 12:07:58,237 INFO L137 encePairwiseOnDemand]: 226/238 looper letters, 115 selfloop transitions, 8 changer transitions 2/255 dead transitions. [2022-11-20 12:07:58,237 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 255 transitions, 912 flow [2022-11-20 12:07:58,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:07:58,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 12:07:58,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1391 transitions. [2022-11-20 12:07:58,243 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7305672268907563 [2022-11-20 12:07:58,244 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1391 transitions. [2022-11-20 12:07:58,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1391 transitions. [2022-11-20 12:07:58,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:07:58,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1391 transitions. [2022-11-20 12:07:58,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 173.875) internal successors, (1391), 8 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:07:58,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 238.0) internal successors, (2142), 9 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:07:58,253 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 238.0) internal successors, (2142), 9 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:07:58,253 INFO L175 Difference]: Start difference. First operand has 204 places, 195 transitions, 495 flow. Second operand 8 states and 1391 transitions. [2022-11-20 12:07:58,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 255 transitions, 912 flow [2022-11-20 12:07:58,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 255 transitions, 902 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:07:58,261 INFO L231 Difference]: Finished difference. Result has 215 places, 199 transitions, 554 flow [2022-11-20 12:07:58,262 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=554, PETRI_PLACES=215, PETRI_TRANSITIONS=199} [2022-11-20 12:07:58,265 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 13 predicate places. [2022-11-20 12:07:58,265 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 199 transitions, 554 flow [2022-11-20 12:07:58,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 161.85714285714286) internal successors, (1133), 7 states have internal predecessors, (1133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:07:58,266 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:07:58,266 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:07:58,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 12:07:58,266 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-20 12:07:58,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:07:58,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1365151751, now seen corresponding path program 1 times [2022-11-20 12:07:58,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:07:58,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287917182] [2022-11-20 12:07:58,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:07:58,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:07:58,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:58,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:07:58,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:07:58,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287917182] [2022-11-20 12:07:58,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287917182] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:07:58,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:07:58,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:07:58,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683272437] [2022-11-20 12:07:58,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:07:58,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:07:58,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:07:58,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:07:58,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:07:58,463 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 238 [2022-11-20 12:07:58,464 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 199 transitions, 554 flow. Second operand has 7 states, 7 states have (on average 161.85714285714286) internal successors, (1133), 7 states have internal predecessors, (1133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:07:58,464 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:07:58,465 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 238 [2022-11-20 12:07:58,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:08:02,579 INFO L130 PetriNetUnfolder]: 8933/17449 cut-off events. [2022-11-20 12:08:02,579 INFO L131 PetriNetUnfolder]: For 7276/7276 co-relation queries the response was YES. [2022-11-20 12:08:02,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39315 conditions, 17449 events. 8933/17449 cut-off events. For 7276/7276 co-relation queries the response was YES. Maximal size of possible extension queue 609. Compared 150118 event pairs, 6692 based on Foata normal form. 12/10095 useless extension candidates. Maximal degree in co-relation 38716. Up to 13405 conditions per place. [2022-11-20 12:08:02,734 INFO L137 encePairwiseOnDemand]: 231/238 looper letters, 65 selfloop transitions, 4 changer transitions 25/224 dead transitions. [2022-11-20 12:08:02,734 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 224 transitions, 825 flow [2022-11-20 12:08:02,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:08:02,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:08:02,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1197 transitions. [2022-11-20 12:08:02,739 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7184873949579832 [2022-11-20 12:08:02,739 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1197 transitions. [2022-11-20 12:08:02,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1197 transitions. [2022-11-20 12:08:02,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:08:02,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1197 transitions. [2022-11-20 12:08:02,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:08:02,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 238.0) internal successors, (1904), 8 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:08:02,748 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 238.0) internal successors, (1904), 8 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:08:02,749 INFO L175 Difference]: Start difference. First operand has 215 places, 199 transitions, 554 flow. Second operand 7 states and 1197 transitions. [2022-11-20 12:08:02,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 224 transitions, 825 flow [2022-11-20 12:08:02,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 224 transitions, 822 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:08:02,759 INFO L231 Difference]: Finished difference. Result has 221 places, 197 transitions, 549 flow [2022-11-20 12:08:02,760 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=549, PETRI_PLACES=221, PETRI_TRANSITIONS=197} [2022-11-20 12:08:02,761 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 19 predicate places. [2022-11-20 12:08:02,761 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 197 transitions, 549 flow [2022-11-20 12:08:02,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 161.85714285714286) internal successors, (1133), 7 states have internal predecessors, (1133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:08:02,762 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:08:02,762 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:08:02,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 12:08:02,762 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-20 12:08:02,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:08:02,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1296937254, now seen corresponding path program 1 times [2022-11-20 12:08:02,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:08:02,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176109442] [2022-11-20 12:08:02,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:08:02,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:08:02,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:03,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:08:03,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:08:03,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176109442] [2022-11-20 12:08:03,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176109442] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:08:03,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209050846] [2022-11-20 12:08:03,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:08:03,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:08:03,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae54f089-5867-468e-b247-586f486f25da/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:08:03,068 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae54f089-5867-468e-b247-586f486f25da/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:08:03,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae54f089-5867-468e-b247-586f486f25da/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:08:03,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:03,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 12:08:03,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:08:03,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:08:03,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:08:03,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:08:03,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209050846] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:08:03,749 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:08:03,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-20 12:08:03,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482567152] [2022-11-20 12:08:03,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:08:03,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 12:08:03,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:08:03,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 12:08:03,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2022-11-20 12:08:03,753 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 238 [2022-11-20 12:08:03,756 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 197 transitions, 549 flow. Second operand has 18 states, 18 states have (on average 156.94444444444446) internal successors, (2825), 18 states have internal predecessors, (2825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:08:03,756 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:08:03,757 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 238 [2022-11-20 12:08:03,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:08:07,712 INFO L130 PetriNetUnfolder]: 7303/15311 cut-off events. [2022-11-20 12:08:07,712 INFO L131 PetriNetUnfolder]: For 7704/7704 co-relation queries the response was YES. [2022-11-20 12:08:07,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34066 conditions, 15311 events. 7303/15311 cut-off events. For 7704/7704 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 138298 event pairs, 4326 based on Foata normal form. 94/9396 useless extension candidates. Maximal degree in co-relation 33926. Up to 8375 conditions per place. [2022-11-20 12:08:07,837 INFO L137 encePairwiseOnDemand]: 224/238 looper letters, 140 selfloop transitions, 17 changer transitions 15/294 dead transitions. [2022-11-20 12:08:07,837 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 294 transitions, 1253 flow [2022-11-20 12:08:07,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 12:08:07,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-20 12:08:07,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2305 transitions. [2022-11-20 12:08:07,844 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6917767106842737 [2022-11-20 12:08:07,844 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2305 transitions. [2022-11-20 12:08:07,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2305 transitions. [2022-11-20 12:08:07,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:08:07,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2305 transitions. [2022-11-20 12:08:07,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 164.64285714285714) internal successors, (2305), 14 states have internal predecessors, (2305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:08:07,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 238.0) internal successors, (3570), 15 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:08:07,861 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 238.0) internal successors, (3570), 15 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:08:07,861 INFO L175 Difference]: Start difference. First operand has 221 places, 197 transitions, 549 flow. Second operand 14 states and 2305 transitions. [2022-11-20 12:08:07,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 294 transitions, 1253 flow [2022-11-20 12:08:07,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 294 transitions, 1213 flow, removed 15 selfloop flow, removed 9 redundant places. [2022-11-20 12:08:07,883 INFO L231 Difference]: Finished difference. Result has 225 places, 201 transitions, 599 flow [2022-11-20 12:08:07,884 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=599, PETRI_PLACES=225, PETRI_TRANSITIONS=201} [2022-11-20 12:08:07,885 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 23 predicate places. [2022-11-20 12:08:07,885 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 201 transitions, 599 flow [2022-11-20 12:08:07,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 156.94444444444446) internal successors, (2825), 18 states have internal predecessors, (2825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:08:07,887 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:08:07,887 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:08:07,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae54f089-5867-468e-b247-586f486f25da/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:08:08,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae54f089-5867-468e-b247-586f486f25da/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:08:08,093 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-20 12:08:08,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:08:08,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1721504453, now seen corresponding path program 1 times [2022-11-20 12:08:08,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:08:08,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637295011] [2022-11-20 12:08:08,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:08:08,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:08:08,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:08,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:08:08,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:08:08,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637295011] [2022-11-20 12:08:08,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637295011] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:08:08,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992526355] [2022-11-20 12:08:08,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:08:08,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:08:08,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae54f089-5867-468e-b247-586f486f25da/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:08:08,551 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae54f089-5867-468e-b247-586f486f25da/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:08:08,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae54f089-5867-468e-b247-586f486f25da/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 12:08:08,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:08,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 12:08:08,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:08:08,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:08:08,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:08:09,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:08:09,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992526355] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:08:09,127 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:08:09,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-20 12:08:09,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081955494] [2022-11-20 12:08:09,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:08:09,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 12:08:09,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:08:09,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 12:08:09,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2022-11-20 12:08:09,132 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 238 [2022-11-20 12:08:09,135 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 201 transitions, 599 flow. Second operand has 18 states, 18 states have (on average 157.0) internal successors, (2826), 18 states have internal predecessors, (2826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:08:09,135 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:08:09,135 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 238 [2022-11-20 12:08:09,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:08:12,538 INFO L130 PetriNetUnfolder]: 6714/13931 cut-off events. [2022-11-20 12:08:12,538 INFO L131 PetriNetUnfolder]: For 6826/6826 co-relation queries the response was YES. [2022-11-20 12:08:12,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32031 conditions, 13931 events. 6714/13931 cut-off events. For 6826/6826 co-relation queries the response was YES. Maximal size of possible extension queue 604. Compared 121384 event pairs, 3388 based on Foata normal form. 12/8597 useless extension candidates. Maximal degree in co-relation 31880. Up to 6425 conditions per place. [2022-11-20 12:08:12,645 INFO L137 encePairwiseOnDemand]: 222/238 looper letters, 89 selfloop transitions, 16 changer transitions 20/247 dead transitions. [2022-11-20 12:08:12,645 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 247 transitions, 999 flow [2022-11-20 12:08:12,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 12:08:12,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-20 12:08:12,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2270 transitions. [2022-11-20 12:08:12,651 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6812725090036015 [2022-11-20 12:08:12,652 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2270 transitions. [2022-11-20 12:08:12,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2270 transitions. [2022-11-20 12:08:12,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:08:12,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2270 transitions. [2022-11-20 12:08:12,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 162.14285714285714) internal successors, (2270), 14 states have internal predecessors, (2270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:08:12,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 238.0) internal successors, (3570), 15 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:08:12,667 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 238.0) internal successors, (3570), 15 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:08:12,668 INFO L175 Difference]: Start difference. First operand has 225 places, 201 transitions, 599 flow. Second operand 14 states and 2270 transitions. [2022-11-20 12:08:12,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 247 transitions, 999 flow [2022-11-20 12:08:12,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 247 transitions, 982 flow, removed 1 selfloop flow, removed 7 redundant places. [2022-11-20 12:08:12,678 INFO L231 Difference]: Finished difference. Result has 233 places, 198 transitions, 602 flow [2022-11-20 12:08:12,679 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=602, PETRI_PLACES=233, PETRI_TRANSITIONS=198} [2022-11-20 12:08:12,680 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 31 predicate places. [2022-11-20 12:08:12,680 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 198 transitions, 602 flow [2022-11-20 12:08:12,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 157.0) internal successors, (2826), 18 states have internal predecessors, (2826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:08:12,681 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:08:12,682 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:08:12,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae54f089-5867-468e-b247-586f486f25da/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:08:12,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae54f089-5867-468e-b247-586f486f25da/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:08:12,888 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-20 12:08:12,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:08:12,888 INFO L85 PathProgramCache]: Analyzing trace with hash -113472153, now seen corresponding path program 2 times [2022-11-20 12:08:12,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:08:12,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196769464] [2022-11-20 12:08:12,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:08:12,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:08:12,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:14,104 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:08:14,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:08:14,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196769464] [2022-11-20 12:08:14,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196769464] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:08:14,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973137576] [2022-11-20 12:08:14,105 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:08:14,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:08:14,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae54f089-5867-468e-b247-586f486f25da/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:08:14,107 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae54f089-5867-468e-b247-586f486f25da/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:08:14,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae54f089-5867-468e-b247-586f486f25da/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 12:08:14,268 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:08:14,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:08:14,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-20 12:08:14,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:08:14,781 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 12:08:15,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:08:15,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-20 12:08:15,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:08:15,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-20 12:08:15,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-11-20 12:08:15,242 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:08:15,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:08:15,487 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_191 (Array Int Int)) (v_ArrVal_192 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_191) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_192) c_~X_0~0.base) (+ c_~X_0~0.offset 4)) 9223372039002259456))) is different from false [2022-11-20 12:08:15,509 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_191 (Array Int Int)) (v_ArrVal_192 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_191) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_192) |c_ULTIMATE.start_main_#t~ret27#1.base|) (+ |c_ULTIMATE.start_main_#t~ret27#1.offset| 4)) 9223372039002259456))) is different from false [2022-11-20 12:08:15,522 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_191 (Array Int Int)) (v_ArrVal_192 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_191) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_192) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) (+ |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset| 4)) 9223372039002259456))) is different from false [2022-11-20 12:08:15,530 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_191 (Array Int Int)) (v_ArrVal_192 (Array Int Int))) (< 0 (+ 9223372039002259456 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_191) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_192) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))))) is different from false [2022-11-20 12:08:15,601 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:08:15,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-11-20 12:08:15,612 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:08:15,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 76 [2022-11-20 12:08:15,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 54 [2022-11-20 12:08:15,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2022-11-20 12:08:16,386 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 8 not checked. [2022-11-20 12:08:16,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973137576] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:08:16,387 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:08:16,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 47 [2022-11-20 12:08:16,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749676107] [2022-11-20 12:08:16,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:08:16,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-20 12:08:16,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:08:16,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-20 12:08:16,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1721, Unknown=14, NotChecked=348, Total=2256 [2022-11-20 12:08:16,394 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 238 [2022-11-20 12:08:16,399 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 198 transitions, 602 flow. Second operand has 48 states, 48 states have (on average 134.5) internal successors, (6456), 48 states have internal predecessors, (6456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:08:16,400 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:08:16,400 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 238 [2022-11-20 12:08:16,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand