./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b 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_1824ed9d-9ea8-4a50-914a-b5a80a60e3e2/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1824ed9d-9ea8-4a50-914a-b5a80a60e3e2/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1824ed9d-9ea8-4a50-914a-b5a80a60e3e2/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1824ed9d-9ea8-4a50-914a-b5a80a60e3e2/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1824ed9d-9ea8-4a50-914a-b5a80a60e3e2/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1824ed9d-9ea8-4a50-914a-b5a80a60e3e2/bin/uautomizer-TMbwUNV5ro --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 7a18ee378e36a8b6ec16846ba26aa7ebab799f55311c04bb5b266d3aa0d0986d --- 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-8393723 [2022-11-18 21:00:57,620 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 21:00:57,626 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 21:00:57,667 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 21:00:57,668 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 21:00:57,669 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 21:00:57,670 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 21:00:57,672 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 21:00:57,678 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 21:00:57,685 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 21:00:57,686 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 21:00:57,689 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 21:00:57,690 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 21:00:57,692 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 21:00:57,695 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 21:00:57,698 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 21:00:57,700 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 21:00:57,701 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 21:00:57,704 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 21:00:57,711 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 21:00:57,713 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 21:00:57,715 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 21:00:57,718 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 21:00:57,719 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 21:00:57,729 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 21:00:57,730 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 21:00:57,730 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 21:00:57,732 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 21:00:57,733 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 21:00:57,734 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 21:00:57,734 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 21:00:57,736 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 21:00:57,737 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 21:00:57,739 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 21:00:57,742 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 21:00:57,742 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 21:00:57,743 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 21:00:57,743 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 21:00:57,743 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 21:00:57,744 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 21:00:57,745 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 21:00:57,746 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1824ed9d-9ea8-4a50-914a-b5a80a60e3e2/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 21:00:57,788 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 21:00:57,789 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 21:00:57,789 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 21:00:57,790 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 21:00:57,791 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 21:00:57,791 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 21:00:57,792 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 21:00:57,792 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 21:00:57,792 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 21:00:57,793 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 21:00:57,794 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 21:00:57,794 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 21:00:57,795 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 21:00:57,795 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 21:00:57,795 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 21:00:57,795 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 21:00:57,796 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 21:00:57,796 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 21:00:57,796 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 21:00:57,796 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 21:00:57,797 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 21:00:57,797 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 21:00:57,797 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 21:00:57,798 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 21:00:57,798 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 21:00:57,798 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 21:00:57,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:00:57,799 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 21:00:57,799 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 21:00:57,799 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 21:00:57,800 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 21:00:57,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 21:00:57,800 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 21:00:57,801 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 21:00:57,801 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 21:00:57,801 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1824ed9d-9ea8-4a50-914a-b5a80a60e3e2/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1824ed9d-9ea8-4a50-914a-b5a80a60e3e2/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a18ee378e36a8b6ec16846ba26aa7ebab799f55311c04bb5b266d3aa0d0986d [2022-11-18 21:00:58,089 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 21:00:58,115 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 21:00:58,118 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 21:00:58,120 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 21:00:58,121 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 21:00:58,123 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1824ed9d-9ea8-4a50-914a-b5a80a60e3e2/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c [2022-11-18 21:00:58,235 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1824ed9d-9ea8-4a50-914a-b5a80a60e3e2/bin/uautomizer-TMbwUNV5ro/data/3c7d333da/b08ff5bc6b6843e0b164e59d3d11706f/FLAGef682a4dc [2022-11-18 21:00:58,655 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 21:00:58,656 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1824ed9d-9ea8-4a50-914a-b5a80a60e3e2/sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c [2022-11-18 21:00:58,668 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1824ed9d-9ea8-4a50-914a-b5a80a60e3e2/bin/uautomizer-TMbwUNV5ro/data/3c7d333da/b08ff5bc6b6843e0b164e59d3d11706f/FLAGef682a4dc [2022-11-18 21:00:59,066 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1824ed9d-9ea8-4a50-914a-b5a80a60e3e2/bin/uautomizer-TMbwUNV5ro/data/3c7d333da/b08ff5bc6b6843e0b164e59d3d11706f [2022-11-18 21:00:59,069 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 21:00:59,071 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 21:00:59,074 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 21:00:59,074 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 21:00:59,078 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 21:00:59,079 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:00:59" (1/1) ... [2022-11-18 21:00:59,081 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59875c18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:59, skipping insertion in model container [2022-11-18 21:00:59,081 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:00:59" (1/1) ... [2022-11-18 21:00:59,087 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 21:00:59,128 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 21:00:59,366 WARN L234 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_1824ed9d-9ea8-4a50-914a-b5a80a60e3e2/sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c[4788,4801] [2022-11-18 21:00:59,374 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:00:59,386 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 21:00:59,416 WARN L234 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_1824ed9d-9ea8-4a50-914a-b5a80a60e3e2/sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c[4788,4801] [2022-11-18 21:00:59,421 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:00:59,435 INFO L208 MainTranslator]: Completed translation [2022-11-18 21:00:59,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:59 WrapperNode [2022-11-18 21:00:59,436 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 21:00:59,437 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 21:00:59,437 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 21:00:59,437 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 21:00:59,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:59" (1/1) ... [2022-11-18 21:00:59,455 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:59" (1/1) ... [2022-11-18 21:00:59,485 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 347 [2022-11-18 21:00:59,486 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 21:00:59,486 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 21:00:59,486 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 21:00:59,487 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 21:00:59,496 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:59" (1/1) ... [2022-11-18 21:00:59,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:59" (1/1) ... [2022-11-18 21:00:59,501 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:59" (1/1) ... [2022-11-18 21:00:59,501 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:59" (1/1) ... [2022-11-18 21:00:59,526 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:59" (1/1) ... [2022-11-18 21:00:59,531 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:59" (1/1) ... [2022-11-18 21:00:59,534 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:59" (1/1) ... [2022-11-18 21:00:59,535 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:59" (1/1) ... [2022-11-18 21:00:59,557 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 21:00:59,558 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 21:00:59,559 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 21:00:59,559 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 21:00:59,560 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:59" (1/1) ... [2022-11-18 21:00:59,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:00:59,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1824ed9d-9ea8-4a50-914a-b5a80a60e3e2/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:00:59,596 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1824ed9d-9ea8-4a50-914a-b5a80a60e3e2/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 21:00:59,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1824ed9d-9ea8-4a50-914a-b5a80a60e3e2/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 21:00:59,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 21:00:59,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 21:00:59,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 21:00:59,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 21:00:59,641 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 21:00:59,647 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 21:00:59,647 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 21:00:59,648 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 21:00:59,648 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 21:00:59,648 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 21:00:59,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 21:00:59,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 21:00:59,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 21:00:59,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 21:00:59,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 21:00:59,650 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 21:00:59,771 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 21:00:59,773 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 21:01:00,556 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 21:01:00,570 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 21:01:00,570 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-18 21:01:00,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:01:00 BoogieIcfgContainer [2022-11-18 21:01:00,587 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 21:01:00,590 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 21:01:00,591 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 21:01:00,598 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 21:01:00,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:00:59" (1/3) ... [2022-11-18 21:01:00,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@662ba41c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:01:00, skipping insertion in model container [2022-11-18 21:01:00,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:59" (2/3) ... [2022-11-18 21:01:00,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@662ba41c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:01:00, skipping insertion in model container [2022-11-18 21:01:00,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:01:00" (3/3) ... [2022-11-18 21:01:00,603 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-trans.wvr.c [2022-11-18 21:01:00,617 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 21:01:00,628 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 21:01:00,628 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2022-11-18 21:01:00,628 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 21:01:00,806 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 21:01:00,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 434 places, 456 transitions, 936 flow [2022-11-18 21:01:01,067 INFO L130 PetriNetUnfolder]: 32/453 cut-off events. [2022-11-18 21:01:01,067 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 21:01:01,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 466 conditions, 453 events. 32/453 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1308 event pairs, 0 based on Foata normal form. 0/395 useless extension candidates. Maximal degree in co-relation 330. Up to 2 conditions per place. [2022-11-18 21:01:01,082 INFO L82 GeneralOperation]: Start removeDead. Operand has 434 places, 456 transitions, 936 flow [2022-11-18 21:01:01,102 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 411 places, 432 transitions, 879 flow [2022-11-18 21:01:01,123 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 21:01:01,132 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;@6795f6d4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 21:01:01,132 INFO L358 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2022-11-18 21:01:01,158 INFO L130 PetriNetUnfolder]: 3/112 cut-off events. [2022-11-18 21:01:01,158 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 21:01:01,159 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:01:01,159 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] [2022-11-18 21:01:01,160 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-18 21:01:01,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:01,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1259387843, now seen corresponding path program 1 times [2022-11-18 21:01:01,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:01:01,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089197798] [2022-11-18 21:01:01,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:01,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:01:01,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:01,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:01:01,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:01:01,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089197798] [2022-11-18 21:01:01,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089197798] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:01:01,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:01:01,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:01:01,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044884985] [2022-11-18 21:01:01,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:01:01,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:01:01,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:01:01,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:01:01,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:01:01,750 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 418 out of 456 [2022-11-18 21:01:01,762 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 432 transitions, 879 flow. Second operand has 4 states, 4 states have (on average 419.5) internal successors, (1678), 4 states have internal predecessors, (1678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:01,762 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:01:01,762 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 418 of 456 [2022-11-18 21:01:01,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:01:02,137 INFO L130 PetriNetUnfolder]: 25/727 cut-off events. [2022-11-18 21:01:02,138 INFO L131 PetriNetUnfolder]: For 22/26 co-relation queries the response was YES. [2022-11-18 21:01:02,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 778 conditions, 727 events. 25/727 cut-off events. For 22/26 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3628 event pairs, 0 based on Foata normal form. 66/691 useless extension candidates. Maximal degree in co-relation 557. Up to 18 conditions per place. [2022-11-18 21:01:02,159 INFO L137 encePairwiseOnDemand]: 432/456 looper letters, 26 selfloop transitions, 4 changer transitions 2/427 dead transitions. [2022-11-18 21:01:02,159 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 427 transitions, 944 flow [2022-11-18 21:01:02,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:01:02,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 21:01:02,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2156 transitions. [2022-11-18 21:01:02,189 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9456140350877194 [2022-11-18 21:01:02,190 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2156 transitions. [2022-11-18 21:01:02,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2156 transitions. [2022-11-18 21:01:02,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:01:02,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2156 transitions. [2022-11-18 21:01:02,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 431.2) internal successors, (2156), 5 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:02,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 456.0) internal successors, (2736), 6 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:02,232 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 456.0) internal successors, (2736), 6 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:02,235 INFO L175 Difference]: Start difference. First operand has 411 places, 432 transitions, 879 flow. Second operand 5 states and 2156 transitions. [2022-11-18 21:01:02,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 427 transitions, 944 flow [2022-11-18 21:01:02,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 427 transitions, 926 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 21:01:02,259 INFO L231 Difference]: Finished difference. Result has 413 places, 415 transitions, 860 flow [2022-11-18 21:01:02,261 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=834, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=860, PETRI_PLACES=413, PETRI_TRANSITIONS=415} [2022-11-18 21:01:02,267 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 2 predicate places. [2022-11-18 21:01:02,268 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 415 transitions, 860 flow [2022-11-18 21:01:02,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 419.5) internal successors, (1678), 4 states have internal predecessors, (1678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:02,270 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:01:02,271 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:01:02,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 21:01:02,273 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-18 21:01:02,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:02,273 INFO L85 PathProgramCache]: Analyzing trace with hash -846474772, now seen corresponding path program 1 times [2022-11-18 21:01:02,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:01:02,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602079319] [2022-11-18 21:01:02,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:02,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:01:02,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:02,650 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:01:02,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:01:02,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602079319] [2022-11-18 21:01:02,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602079319] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:01:02,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167636649] [2022-11-18 21:01:02,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:02,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:01:02,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1824ed9d-9ea8-4a50-914a-b5a80a60e3e2/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:01:02,659 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1824ed9d-9ea8-4a50-914a-b5a80a60e3e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:01:02,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1824ed9d-9ea8-4a50-914a-b5a80a60e3e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 21:01:02,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:02,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 21:01:02,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:01:02,965 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:01:02,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:01:03,031 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:01:03,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167636649] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:01:03,032 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:01:03,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 21:01:03,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938146999] [2022-11-18 21:01:03,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:01:03,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 21:01:03,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:01:03,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 21:01:03,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 21:01:03,043 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 418 out of 456 [2022-11-18 21:01:03,050 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 415 transitions, 860 flow. Second operand has 12 states, 12 states have (on average 420.6666666666667) internal successors, (5048), 12 states have internal predecessors, (5048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:03,050 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:01:03,050 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 418 of 456 [2022-11-18 21:01:03,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:01:03,794 INFO L130 PetriNetUnfolder]: 61/1666 cut-off events. [2022-11-18 21:01:03,794 INFO L131 PetriNetUnfolder]: For 21/31 co-relation queries the response was YES. [2022-11-18 21:01:03,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1786 conditions, 1666 events. 61/1666 cut-off events. For 21/31 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 11962 event pairs, 0 based on Foata normal form. 3/1424 useless extension candidates. Maximal degree in co-relation 1344. Up to 13 conditions per place. [2022-11-18 21:01:03,830 INFO L137 encePairwiseOnDemand]: 449/456 looper letters, 53 selfloop transitions, 18 changer transitions 0/466 dead transitions. [2022-11-18 21:01:03,830 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 466 transitions, 1150 flow [2022-11-18 21:01:03,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 21:01:03,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 21:01:03,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 7598 transitions. [2022-11-18 21:01:03,845 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.925682261208577 [2022-11-18 21:01:03,845 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 7598 transitions. [2022-11-18 21:01:03,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 7598 transitions. [2022-11-18 21:01:03,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:01:03,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 7598 transitions. [2022-11-18 21:01:03,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 422.1111111111111) internal successors, (7598), 18 states have internal predecessors, (7598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:03,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 456.0) internal successors, (8664), 19 states have internal predecessors, (8664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:03,895 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 456.0) internal successors, (8664), 19 states have internal predecessors, (8664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:03,896 INFO L175 Difference]: Start difference. First operand has 413 places, 415 transitions, 860 flow. Second operand 18 states and 7598 transitions. [2022-11-18 21:01:03,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 466 transitions, 1150 flow [2022-11-18 21:01:03,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 466 transitions, 1148 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 21:01:03,906 INFO L231 Difference]: Finished difference. Result has 431 places, 427 transitions, 964 flow [2022-11-18 21:01:03,907 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=964, PETRI_PLACES=431, PETRI_TRANSITIONS=427} [2022-11-18 21:01:03,908 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 20 predicate places. [2022-11-18 21:01:03,908 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 427 transitions, 964 flow [2022-11-18 21:01:03,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 420.6666666666667) internal successors, (5048), 12 states have internal predecessors, (5048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:03,912 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:01:03,912 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:01:03,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1824ed9d-9ea8-4a50-914a-b5a80a60e3e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 21:01:04,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1824ed9d-9ea8-4a50-914a-b5a80a60e3e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-18 21:01:04,120 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-18 21:01:04,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:04,120 INFO L85 PathProgramCache]: Analyzing trace with hash -470913155, now seen corresponding path program 1 times [2022-11-18 21:01:04,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:01:04,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291127205] [2022-11-18 21:01:04,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:04,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:01:04,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:04,312 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:01:04,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:01:04,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291127205] [2022-11-18 21:01:04,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291127205] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:01:04,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353658732] [2022-11-18 21:01:04,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:04,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:01:04,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1824ed9d-9ea8-4a50-914a-b5a80a60e3e2/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:01:04,318 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1824ed9d-9ea8-4a50-914a-b5a80a60e3e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:01:04,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1824ed9d-9ea8-4a50-914a-b5a80a60e3e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 21:01:04,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:04,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 21:01:04,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:01:04,578 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:01:04,578 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:01:04,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353658732] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:01:04,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:01:04,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 21:01:04,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108048442] [2022-11-18 21:01:04,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:01:04,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:01:04,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:01:04,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:01:04,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 21:01:04,585 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 418 out of 456 [2022-11-18 21:01:04,589 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 427 transitions, 964 flow. Second operand has 6 states, 6 states have (on average 420.3333333333333) internal successors, (2522), 6 states have internal predecessors, (2522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:04,589 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:01:04,589 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 418 of 456 [2022-11-18 21:01:04,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:01:05,206 INFO L130 PetriNetUnfolder]: 61/1662 cut-off events. [2022-11-18 21:01:05,207 INFO L131 PetriNetUnfolder]: For 57/67 co-relation queries the response was YES. [2022-11-18 21:01:05,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1804 conditions, 1662 events. 61/1662 cut-off events. For 57/67 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 11945 event pairs, 0 based on Foata normal form. 4/1421 useless extension candidates. Maximal degree in co-relation 1437. Up to 36 conditions per place. [2022-11-18 21:01:05,247 INFO L137 encePairwiseOnDemand]: 451/456 looper letters, 27 selfloop transitions, 11 changer transitions 0/433 dead transitions. [2022-11-18 21:01:05,248 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 433 transitions, 1041 flow [2022-11-18 21:01:05,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 21:01:05,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 21:01:05,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2956 transitions. [2022-11-18 21:01:05,253 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9260651629072681 [2022-11-18 21:01:05,254 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2956 transitions. [2022-11-18 21:01:05,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2956 transitions. [2022-11-18 21:01:05,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:01:05,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2956 transitions. [2022-11-18 21:01:05,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 422.2857142857143) internal successors, (2956), 7 states have internal predecessors, (2956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:05,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 456.0) internal successors, (3648), 8 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:05,271 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 456.0) internal successors, (3648), 8 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:05,272 INFO L175 Difference]: Start difference. First operand has 431 places, 427 transitions, 964 flow. Second operand 7 states and 2956 transitions. [2022-11-18 21:01:05,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 433 transitions, 1041 flow [2022-11-18 21:01:05,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 433 transitions, 1009 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-18 21:01:05,282 INFO L231 Difference]: Finished difference. Result has 427 places, 423 transitions, 927 flow [2022-11-18 21:01:05,283 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=905, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=927, PETRI_PLACES=427, PETRI_TRANSITIONS=423} [2022-11-18 21:01:05,284 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 16 predicate places. [2022-11-18 21:01:05,284 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 423 transitions, 927 flow [2022-11-18 21:01:05,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 420.3333333333333) internal successors, (2522), 6 states have internal predecessors, (2522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:05,285 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:01:05,285 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:01:05,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1824ed9d-9ea8-4a50-914a-b5a80a60e3e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 21:01:05,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1824ed9d-9ea8-4a50-914a-b5a80a60e3e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:01:05,492 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-18 21:01:05,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:05,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1297888659, now seen corresponding path program 1 times [2022-11-18 21:01:05,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:01:05,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540018479] [2022-11-18 21:01:05,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:05,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:01:05,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:05,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:01:05,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:01:05,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540018479] [2022-11-18 21:01:05,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540018479] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:01:05,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:01:05,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:01:05,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736872067] [2022-11-18 21:01:05,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:01:05,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:01:05,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:01:05,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:01:05,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:01:05,670 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 417 out of 456 [2022-11-18 21:01:05,680 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 423 transitions, 927 flow. Second operand has 4 states, 4 states have (on average 419.0) internal successors, (1676), 4 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:05,688 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:01:05,689 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 417 of 456 [2022-11-18 21:01:05,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:01:08,633 INFO L130 PetriNetUnfolder]: 541/9022 cut-off events. [2022-11-18 21:01:08,633 INFO L131 PetriNetUnfolder]: For 42/47 co-relation queries the response was YES. [2022-11-18 21:01:08,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9863 conditions, 9022 events. 541/9022 cut-off events. For 42/47 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 105680 event pairs, 75 based on Foata normal form. 0/7557 useless extension candidates. Maximal degree in co-relation 7891. Up to 292 conditions per place. [2022-11-18 21:01:08,849 INFO L137 encePairwiseOnDemand]: 448/456 looper letters, 28 selfloop transitions, 6 changer transitions 0/439 dead transitions. [2022-11-18 21:01:08,850 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 439 transitions, 1038 flow [2022-11-18 21:01:08,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:01:08,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 21:01:08,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2121 transitions. [2022-11-18 21:01:08,854 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9302631578947368 [2022-11-18 21:01:08,854 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2121 transitions. [2022-11-18 21:01:08,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2121 transitions. [2022-11-18 21:01:08,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:01:08,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2121 transitions. [2022-11-18 21:01:08,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 424.2) internal successors, (2121), 5 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:08,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 456.0) internal successors, (2736), 6 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:08,866 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 456.0) internal successors, (2736), 6 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:08,867 INFO L175 Difference]: Start difference. First operand has 427 places, 423 transitions, 927 flow. Second operand 5 states and 2121 transitions. [2022-11-18 21:01:08,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 439 transitions, 1038 flow [2022-11-18 21:01:08,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 439 transitions, 1024 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 21:01:08,876 INFO L231 Difference]: Finished difference. Result has 429 places, 426 transitions, 949 flow [2022-11-18 21:01:08,877 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=913, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=949, PETRI_PLACES=429, PETRI_TRANSITIONS=426} [2022-11-18 21:01:08,878 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 18 predicate places. [2022-11-18 21:01:08,878 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 426 transitions, 949 flow [2022-11-18 21:01:08,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 419.0) internal successors, (1676), 4 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:08,879 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:01:08,879 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:01:08,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 21:01:08,879 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-18 21:01:08,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:08,880 INFO L85 PathProgramCache]: Analyzing trace with hash -103367591, now seen corresponding path program 1 times [2022-11-18 21:01:08,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:01:08,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914708834] [2022-11-18 21:01:08,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:08,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:01:08,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:08,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:01:08,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:01:08,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914708834] [2022-11-18 21:01:08,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914708834] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:01:08,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:01:08,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 21:01:08,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736044385] [2022-11-18 21:01:08,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:01:08,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 21:01:08,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:01:08,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 21:01:08,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 21:01:08,992 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 418 out of 456 [2022-11-18 21:01:08,995 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 426 transitions, 949 flow. Second operand has 5 states, 5 states have (on average 419.8) internal successors, (2099), 5 states have internal predecessors, (2099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:08,995 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:01:08,995 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 418 of 456 [2022-11-18 21:01:08,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:01:09,808 INFO L130 PetriNetUnfolder]: 61/1722 cut-off events. [2022-11-18 21:01:09,809 INFO L131 PetriNetUnfolder]: For 65/81 co-relation queries the response was YES. [2022-11-18 21:01:09,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1893 conditions, 1722 events. 61/1722 cut-off events. For 65/81 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 12833 event pairs, 0 based on Foata normal form. 0/1478 useless extension candidates. Maximal degree in co-relation 1752. Up to 53 conditions per place. [2022-11-18 21:01:09,874 INFO L137 encePairwiseOnDemand]: 451/456 looper letters, 23 selfloop transitions, 4 changer transitions 0/428 dead transitions. [2022-11-18 21:01:09,874 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 428 transitions, 1007 flow [2022-11-18 21:01:09,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:01:09,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 21:01:09,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2112 transitions. [2022-11-18 21:01:09,879 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9263157894736842 [2022-11-18 21:01:09,879 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2112 transitions. [2022-11-18 21:01:09,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2112 transitions. [2022-11-18 21:01:09,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:01:09,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2112 transitions. [2022-11-18 21:01:09,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 422.4) internal successors, (2112), 5 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:09,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 456.0) internal successors, (2736), 6 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:09,892 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 456.0) internal successors, (2736), 6 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:09,892 INFO L175 Difference]: Start difference. First operand has 429 places, 426 transitions, 949 flow. Second operand 5 states and 2112 transitions. [2022-11-18 21:01:09,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 428 transitions, 1007 flow [2022-11-18 21:01:09,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 428 transitions, 1003 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 21:01:09,904 INFO L231 Difference]: Finished difference. Result has 433 places, 426 transitions, 957 flow [2022-11-18 21:01:09,904 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=945, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=957, PETRI_PLACES=433, PETRI_TRANSITIONS=426} [2022-11-18 21:01:09,905 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 22 predicate places. [2022-11-18 21:01:09,905 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 426 transitions, 957 flow [2022-11-18 21:01:09,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 419.8) internal successors, (2099), 5 states have internal predecessors, (2099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:09,906 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:01:09,907 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:01:09,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 21:01:09,907 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-18 21:01:09,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:09,908 INFO L85 PathProgramCache]: Analyzing trace with hash 771621186, now seen corresponding path program 1 times [2022-11-18 21:01:09,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:01:09,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974175890] [2022-11-18 21:01:09,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:09,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:01:09,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:10,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:01:10,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:01:10,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974175890] [2022-11-18 21:01:10,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974175890] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:01:10,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887843753] [2022-11-18 21:01:10,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:10,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:01:10,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1824ed9d-9ea8-4a50-914a-b5a80a60e3e2/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:01:10,139 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1824ed9d-9ea8-4a50-914a-b5a80a60e3e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:01:10,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1824ed9d-9ea8-4a50-914a-b5a80a60e3e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 21:01:10,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:10,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 21:01:10,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:01:10,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:01:10,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:01:10,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:01:10,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887843753] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:01:10,598 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:01:10,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-11-18 21:01:10,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630623011] [2022-11-18 21:01:10,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:01:10,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 21:01:10,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:01:10,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 21:01:10,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-11-18 21:01:10,611 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 413 out of 456 [2022-11-18 21:01:10,617 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 426 transitions, 957 flow. Second operand has 14 states, 14 states have (on average 415.85714285714283) internal successors, (5822), 14 states have internal predecessors, (5822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:10,617 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:01:10,617 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 413 of 456 [2022-11-18 21:01:10,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:01:11,035 INFO L130 PetriNetUnfolder]: 31/932 cut-off events. [2022-11-18 21:01:11,035 INFO L131 PetriNetUnfolder]: For 50/58 co-relation queries the response was YES. [2022-11-18 21:01:11,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1075 conditions, 932 events. 31/932 cut-off events. For 50/58 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 5155 event pairs, 0 based on Foata normal form. 2/814 useless extension candidates. Maximal degree in co-relation 932. Up to 25 conditions per place. [2022-11-18 21:01:11,061 INFO L137 encePairwiseOnDemand]: 448/456 looper letters, 29 selfloop transitions, 13 changer transitions 0/435 dead transitions. [2022-11-18 21:01:11,062 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 435 transitions, 1063 flow [2022-11-18 21:01:11,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 21:01:11,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 21:01:11,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4581 transitions. [2022-11-18 21:01:11,070 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9132775119617225 [2022-11-18 21:01:11,070 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4581 transitions. [2022-11-18 21:01:11,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4581 transitions. [2022-11-18 21:01:11,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:01:11,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4581 transitions. [2022-11-18 21:01:11,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 416.45454545454544) internal successors, (4581), 11 states have internal predecessors, (4581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:11,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 456.0) internal successors, (5472), 12 states have internal predecessors, (5472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:11,094 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 456.0) internal successors, (5472), 12 states have internal predecessors, (5472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:11,094 INFO L175 Difference]: Start difference. First operand has 433 places, 426 transitions, 957 flow. Second operand 11 states and 4581 transitions. [2022-11-18 21:01:11,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 435 transitions, 1063 flow [2022-11-18 21:01:11,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 435 transitions, 1055 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 21:01:11,104 INFO L231 Difference]: Finished difference. Result has 442 places, 427 transitions, 996 flow [2022-11-18 21:01:11,105 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=949, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=996, PETRI_PLACES=442, PETRI_TRANSITIONS=427} [2022-11-18 21:01:11,107 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 31 predicate places. [2022-11-18 21:01:11,108 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 427 transitions, 996 flow [2022-11-18 21:01:11,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 415.85714285714283) internal successors, (5822), 14 states have internal predecessors, (5822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:11,110 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:01:11,111 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:01:11,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1824ed9d-9ea8-4a50-914a-b5a80a60e3e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 21:01:11,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1824ed9d-9ea8-4a50-914a-b5a80a60e3e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:01:11,316 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-18 21:01:11,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:11,317 INFO L85 PathProgramCache]: Analyzing trace with hash 874065923, now seen corresponding path program 2 times [2022-11-18 21:01:11,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:01:11,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273290981] [2022-11-18 21:01:11,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:11,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:01:11,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:11,581 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 56 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 21:01:11,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:01:11,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273290981] [2022-11-18 21:01:11,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273290981] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:01:11,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468099369] [2022-11-18 21:01:11,582 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 21:01:11,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:01:11,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1824ed9d-9ea8-4a50-914a-b5a80a60e3e2/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:01:11,584 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1824ed9d-9ea8-4a50-914a-b5a80a60e3e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:01:11,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1824ed9d-9ea8-4a50-914a-b5a80a60e3e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 21:01:11,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 21:01:11,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:01:11,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 21:01:11,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:01:11,826 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 21:01:11,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:01:11,961 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 21:01:11,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468099369] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:01:11,962 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:01:11,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 17 [2022-11-18 21:01:11,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757345895] [2022-11-18 21:01:11,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:01:11,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 21:01:11,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:01:11,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 21:01:11,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2022-11-18 21:01:11,973 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 413 out of 456 [2022-11-18 21:01:11,982 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 427 transitions, 996 flow. Second operand has 17 states, 17 states have (on average 416.94117647058823) internal successors, (7088), 17 states have internal predecessors, (7088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:11,982 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:01:11,982 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 413 of 456 [2022-11-18 21:01:11,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:01:12,461 INFO L130 PetriNetUnfolder]: 15/519 cut-off events. [2022-11-18 21:01:12,462 INFO L131 PetriNetUnfolder]: For 45/49 co-relation queries the response was YES. [2022-11-18 21:01:12,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 627 conditions, 519 events. 15/519 cut-off events. For 45/49 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1859 event pairs, 0 based on Foata normal form. 1/460 useless extension candidates. Maximal degree in co-relation 612. Up to 9 conditions per place. [2022-11-18 21:01:12,474 INFO L137 encePairwiseOnDemand]: 449/456 looper letters, 21 selfloop transitions, 13 changer transitions 0/427 dead transitions. [2022-11-18 21:01:12,474 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 427 transitions, 1033 flow [2022-11-18 21:01:12,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 21:01:12,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 21:01:12,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 6230 transitions. [2022-11-18 21:01:12,571 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9108187134502924 [2022-11-18 21:01:12,571 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 6230 transitions. [2022-11-18 21:01:12,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 6230 transitions. [2022-11-18 21:01:12,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:01:12,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 6230 transitions. [2022-11-18 21:01:12,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 415.3333333333333) internal successors, (6230), 15 states have internal predecessors, (6230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:12,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 456.0) internal successors, (7296), 16 states have internal predecessors, (7296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:12,605 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 456.0) internal successors, (7296), 16 states have internal predecessors, (7296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:12,605 INFO L175 Difference]: Start difference. First operand has 442 places, 427 transitions, 996 flow. Second operand 15 states and 6230 transitions. [2022-11-18 21:01:12,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 427 transitions, 1033 flow [2022-11-18 21:01:12,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 427 transitions, 988 flow, removed 3 selfloop flow, removed 17 redundant places. [2022-11-18 21:01:12,614 INFO L231 Difference]: Finished difference. Result has 437 places, 420 transitions, 934 flow [2022-11-18 21:01:12,615 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=900, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=934, PETRI_PLACES=437, PETRI_TRANSITIONS=420} [2022-11-18 21:01:12,616 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 26 predicate places. [2022-11-18 21:01:12,617 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 420 transitions, 934 flow [2022-11-18 21:01:12,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 416.94117647058823) internal successors, (7088), 17 states have internal predecessors, (7088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:12,619 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:01:12,619 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:01:12,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1824ed9d-9ea8-4a50-914a-b5a80a60e3e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 21:01:12,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1824ed9d-9ea8-4a50-914a-b5a80a60e3e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-18 21:01:12,825 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-18 21:01:12,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:12,825 INFO L85 PathProgramCache]: Analyzing trace with hash 420245282, now seen corresponding path program 2 times [2022-11-18 21:01:12,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:01:12,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244423130] [2022-11-18 21:01:12,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:12,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:01:12,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:12,963 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 21:01:12,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:01:12,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244423130] [2022-11-18 21:01:12,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244423130] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:01:12,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:01:12,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 21:01:12,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494956073] [2022-11-18 21:01:12,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:01:12,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:01:12,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:01:12,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:01:12,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 21:01:12,973 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 396 out of 456 [2022-11-18 21:01:12,976 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 420 transitions, 934 flow. Second operand has 6 states, 6 states have (on average 398.1666666666667) internal successors, (2389), 6 states have internal predecessors, (2389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:12,976 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:01:12,976 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 396 of 456 [2022-11-18 21:01:12,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:01:14,242 INFO L130 PetriNetUnfolder]: 815/3840 cut-off events. [2022-11-18 21:01:14,242 INFO L131 PetriNetUnfolder]: For 65/65 co-relation queries the response was YES. [2022-11-18 21:01:14,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5855 conditions, 3840 events. 815/3840 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 35255 event pairs, 117 based on Foata normal form. 0/3348 useless extension candidates. Maximal degree in co-relation 5843. Up to 976 conditions per place. [2022-11-18 21:01:14,312 INFO L137 encePairwiseOnDemand]: 450/456 looper letters, 49 selfloop transitions, 5 changer transitions 0/435 dead transitions. [2022-11-18 21:01:14,312 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 435 transitions, 1080 flow [2022-11-18 21:01:14,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 21:01:14,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 21:01:14,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2431 transitions. [2022-11-18 21:01:14,317 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8885233918128655 [2022-11-18 21:01:14,318 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2431 transitions. [2022-11-18 21:01:14,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2431 transitions. [2022-11-18 21:01:14,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:01:14,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2431 transitions. [2022-11-18 21:01:14,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 405.1666666666667) internal successors, (2431), 6 states have internal predecessors, (2431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:14,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 456.0) internal successors, (3192), 7 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:14,330 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 456.0) internal successors, (3192), 7 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:14,331 INFO L175 Difference]: Start difference. First operand has 437 places, 420 transitions, 934 flow. Second operand 6 states and 2431 transitions. [2022-11-18 21:01:14,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 435 transitions, 1080 flow [2022-11-18 21:01:14,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 435 transitions, 1055 flow, removed 1 selfloop flow, removed 12 redundant places. [2022-11-18 21:01:14,341 INFO L231 Difference]: Finished difference. Result has 429 places, 419 transitions, 917 flow [2022-11-18 21:01:14,341 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=907, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=917, PETRI_PLACES=429, PETRI_TRANSITIONS=419} [2022-11-18 21:01:14,345 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 18 predicate places. [2022-11-18 21:01:14,345 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 419 transitions, 917 flow [2022-11-18 21:01:14,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 398.1666666666667) internal successors, (2389), 6 states have internal predecessors, (2389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:14,346 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:01:14,347 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:01:14,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 21:01:14,348 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-18 21:01:14,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:14,349 INFO L85 PathProgramCache]: Analyzing trace with hash 142702985, now seen corresponding path program 1 times [2022-11-18 21:01:14,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:01:14,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013860945] [2022-11-18 21:01:14,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:14,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:01:14,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:14,469 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 21:01:14,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:01:14,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013860945] [2022-11-18 21:01:14,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013860945] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:01:14,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:01:14,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:01:14,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832255981] [2022-11-18 21:01:14,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:01:14,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:01:14,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:01:14,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:01:14,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:01:14,473 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 407 out of 456 [2022-11-18 21:01:14,475 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 419 transitions, 917 flow. Second operand has 4 states, 4 states have (on average 408.75) internal successors, (1635), 4 states have internal predecessors, (1635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:14,475 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:01:14,475 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 407 of 456 [2022-11-18 21:01:14,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:01:15,031 INFO L130 PetriNetUnfolder]: 165/1809 cut-off events. [2022-11-18 21:01:15,031 INFO L131 PetriNetUnfolder]: For 26/30 co-relation queries the response was YES. [2022-11-18 21:01:15,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2345 conditions, 1809 events. 165/1809 cut-off events. For 26/30 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 13671 event pairs, 48 based on Foata normal form. 0/1551 useless extension candidates. Maximal degree in co-relation 2333. Up to 140 conditions per place. [2022-11-18 21:01:15,077 INFO L137 encePairwiseOnDemand]: 450/456 looper letters, 37 selfloop transitions, 4 changer transitions 0/433 dead transitions. [2022-11-18 21:01:15,077 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 433 transitions, 1035 flow [2022-11-18 21:01:15,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 21:01:15,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 21:01:15,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1671 transitions. [2022-11-18 21:01:15,081 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9161184210526315 [2022-11-18 21:01:15,081 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1671 transitions. [2022-11-18 21:01:15,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1671 transitions. [2022-11-18 21:01:15,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:01:15,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1671 transitions. [2022-11-18 21:01:15,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 417.75) internal successors, (1671), 4 states have internal predecessors, (1671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:15,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 456.0) internal successors, (2280), 5 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:15,090 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 456.0) internal successors, (2280), 5 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:15,090 INFO L175 Difference]: Start difference. First operand has 429 places, 419 transitions, 917 flow. Second operand 4 states and 1671 transitions. [2022-11-18 21:01:15,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 433 transitions, 1035 flow [2022-11-18 21:01:15,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 433 transitions, 1026 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 21:01:15,099 INFO L231 Difference]: Finished difference. Result has 430 places, 420 transitions, 932 flow [2022-11-18 21:01:15,100 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=906, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=932, PETRI_PLACES=430, PETRI_TRANSITIONS=420} [2022-11-18 21:01:15,101 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 19 predicate places. [2022-11-18 21:01:15,101 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 420 transitions, 932 flow [2022-11-18 21:01:15,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 408.75) internal successors, (1635), 4 states have internal predecessors, (1635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:15,102 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:01:15,102 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:01:15,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 21:01:15,102 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-18 21:01:15,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:15,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1634394061, now seen corresponding path program 1 times [2022-11-18 21:01:15,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:01:15,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42860341] [2022-11-18 21:01:15,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:15,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:01:15,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:15,220 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 21:01:15,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:01:15,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42860341] [2022-11-18 21:01:15,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42860341] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:01:15,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:01:15,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:01:15,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669379183] [2022-11-18 21:01:15,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:01:15,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:01:15,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:01:15,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:01:15,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:01:15,224 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 417 out of 456 [2022-11-18 21:01:15,226 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 420 transitions, 932 flow. Second operand has 4 states, 4 states have (on average 419.25) internal successors, (1677), 4 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:15,226 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:01:15,226 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 417 of 456 [2022-11-18 21:01:15,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:01:16,156 INFO L130 PetriNetUnfolder]: 186/1942 cut-off events. [2022-11-18 21:01:16,157 INFO L131 PetriNetUnfolder]: For 140/908 co-relation queries the response was YES. [2022-11-18 21:01:16,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2355 conditions, 1942 events. 186/1942 cut-off events. For 140/908 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 15521 event pairs, 21 based on Foata normal form. 0/1612 useless extension candidates. Maximal degree in co-relation 2341. Up to 175 conditions per place. [2022-11-18 21:01:16,235 INFO L137 encePairwiseOnDemand]: 448/456 looper letters, 27 selfloop transitions, 6 changer transitions 0/435 dead transitions. [2022-11-18 21:01:16,236 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 435 transitions, 1038 flow [2022-11-18 21:01:16,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:01:16,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 21:01:16,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2120 transitions. [2022-11-18 21:01:16,241 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9298245614035088 [2022-11-18 21:01:16,241 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2120 transitions. [2022-11-18 21:01:16,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2120 transitions. [2022-11-18 21:01:16,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:01:16,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2120 transitions. [2022-11-18 21:01:16,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 424.0) internal successors, (2120), 5 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:16,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 456.0) internal successors, (2736), 6 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:16,254 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 456.0) internal successors, (2736), 6 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:16,254 INFO L175 Difference]: Start difference. First operand has 430 places, 420 transitions, 932 flow. Second operand 5 states and 2120 transitions. [2022-11-18 21:01:16,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 435 transitions, 1038 flow [2022-11-18 21:01:16,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 435 transitions, 1038 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 21:01:16,264 INFO L231 Difference]: Finished difference. Result has 437 places, 423 transitions, 968 flow [2022-11-18 21:01:16,265 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=932, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=968, PETRI_PLACES=437, PETRI_TRANSITIONS=423} [2022-11-18 21:01:16,266 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 26 predicate places. [2022-11-18 21:01:16,266 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 423 transitions, 968 flow [2022-11-18 21:01:16,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 419.25) internal successors, (1677), 4 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:16,267 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:01:16,267 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:01:16,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 21:01:16,268 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-18 21:01:16,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:16,268 INFO L85 PathProgramCache]: Analyzing trace with hash -809818599, now seen corresponding path program 1 times [2022-11-18 21:01:16,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:01:16,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619356821] [2022-11-18 21:01:16,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:16,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:01:16,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:16,430 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 21:01:16,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:01:16,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619356821] [2022-11-18 21:01:16,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619356821] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:01:16,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:01:16,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 21:01:16,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910659305] [2022-11-18 21:01:16,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:01:16,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:01:16,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:01:16,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:01:16,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 21:01:16,437 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 396 out of 456 [2022-11-18 21:01:16,440 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 423 transitions, 968 flow. Second operand has 6 states, 6 states have (on average 398.3333333333333) internal successors, (2390), 6 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:16,440 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:01:16,440 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 396 of 456 [2022-11-18 21:01:16,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:01:20,291 INFO L130 PetriNetUnfolder]: 3406/13321 cut-off events. [2022-11-18 21:01:20,292 INFO L131 PetriNetUnfolder]: For 1708/1876 co-relation queries the response was YES. [2022-11-18 21:01:20,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18996 conditions, 13321 events. 3406/13321 cut-off events. For 1708/1876 co-relation queries the response was YES. Maximal size of possible extension queue 1259. Compared 169276 event pairs, 522 based on Foata normal form. 0/10437 useless extension candidates. Maximal degree in co-relation 18978. Up to 3754 conditions per place. [2022-11-18 21:01:20,502 INFO L137 encePairwiseOnDemand]: 450/456 looper letters, 48 selfloop transitions, 5 changer transitions 0/437 dead transitions. [2022-11-18 21:01:20,502 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 437 transitions, 1109 flow [2022-11-18 21:01:20,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 21:01:20,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 21:01:20,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2430 transitions. [2022-11-18 21:01:20,507 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8881578947368421 [2022-11-18 21:01:20,507 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2430 transitions. [2022-11-18 21:01:20,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2430 transitions. [2022-11-18 21:01:20,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:01:20,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2430 transitions. [2022-11-18 21:01:20,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 405.0) internal successors, (2430), 6 states have internal predecessors, (2430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:20,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 456.0) internal successors, (3192), 7 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:20,519 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 456.0) internal successors, (3192), 7 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:20,519 INFO L175 Difference]: Start difference. First operand has 437 places, 423 transitions, 968 flow. Second operand 6 states and 2430 transitions. [2022-11-18 21:01:20,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 437 transitions, 1109 flow [2022-11-18 21:01:20,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 437 transitions, 1105 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 21:01:20,530 INFO L231 Difference]: Finished difference. Result has 440 places, 422 transitions, 972 flow [2022-11-18 21:01:20,531 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=962, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=972, PETRI_PLACES=440, PETRI_TRANSITIONS=422} [2022-11-18 21:01:20,531 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 29 predicate places. [2022-11-18 21:01:20,532 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 422 transitions, 972 flow [2022-11-18 21:01:20,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 398.3333333333333) internal successors, (2390), 6 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:20,533 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:01:20,533 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:01:20,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 21:01:20,533 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-18 21:01:20,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:20,534 INFO L85 PathProgramCache]: Analyzing trace with hash 665428434, now seen corresponding path program 1 times [2022-11-18 21:01:20,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:01:20,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124084429] [2022-11-18 21:01:20,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:20,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:01:20,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:20,650 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 21:01:20,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:01:20,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124084429] [2022-11-18 21:01:20,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124084429] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:01:20,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:01:20,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:01:20,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595188875] [2022-11-18 21:01:20,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:01:20,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:01:20,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:01:20,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:01:20,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:01:20,658 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 407 out of 456 [2022-11-18 21:01:20,660 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 422 transitions, 972 flow. Second operand has 4 states, 4 states have (on average 409.0) internal successors, (1636), 4 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:20,660 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:01:20,660 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 407 of 456 [2022-11-18 21:01:20,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:01:21,684 INFO L130 PetriNetUnfolder]: 450/2802 cut-off events. [2022-11-18 21:01:21,685 INFO L131 PetriNetUnfolder]: For 410/1775 co-relation queries the response was YES. [2022-11-18 21:01:21,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3945 conditions, 2802 events. 450/2802 cut-off events. For 410/1775 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 27963 event pairs, 168 based on Foata normal form. 0/2191 useless extension candidates. Maximal degree in co-relation 3927. Up to 418 conditions per place. [2022-11-18 21:01:21,772 INFO L137 encePairwiseOnDemand]: 450/456 looper letters, 36 selfloop transitions, 4 changer transitions 0/435 dead transitions. [2022-11-18 21:01:21,772 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 435 transitions, 1085 flow [2022-11-18 21:01:21,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 21:01:21,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 21:01:21,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1670 transitions. [2022-11-18 21:01:21,776 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9155701754385965 [2022-11-18 21:01:21,776 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1670 transitions. [2022-11-18 21:01:21,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1670 transitions. [2022-11-18 21:01:21,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:01:21,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1670 transitions. [2022-11-18 21:01:21,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 417.5) internal successors, (1670), 4 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:21,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 456.0) internal successors, (2280), 5 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:21,785 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 456.0) internal successors, (2280), 5 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:21,785 INFO L175 Difference]: Start difference. First operand has 440 places, 422 transitions, 972 flow. Second operand 4 states and 1670 transitions. [2022-11-18 21:01:21,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 435 transitions, 1085 flow [2022-11-18 21:01:21,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 435 transitions, 1076 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 21:01:21,794 INFO L231 Difference]: Finished difference. Result has 441 places, 423 transitions, 987 flow [2022-11-18 21:01:21,795 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=961, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=987, PETRI_PLACES=441, PETRI_TRANSITIONS=423} [2022-11-18 21:01:21,796 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 30 predicate places. [2022-11-18 21:01:21,796 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 423 transitions, 987 flow [2022-11-18 21:01:21,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 409.0) internal successors, (1636), 4 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:21,797 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:01:21,797 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:01:21,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 21:01:21,797 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-18 21:01:21,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:21,798 INFO L85 PathProgramCache]: Analyzing trace with hash -152845199, now seen corresponding path program 1 times [2022-11-18 21:01:21,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:01:21,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911236654] [2022-11-18 21:01:21,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:21,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:01:21,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:21,896 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 21:01:21,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:01:21,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911236654] [2022-11-18 21:01:21,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911236654] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:01:21,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:01:21,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:01:21,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658685598] [2022-11-18 21:01:21,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:01:21,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:01:21,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:01:21,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:01:21,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:01:21,900 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 407 out of 456 [2022-11-18 21:01:21,902 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 423 transitions, 987 flow. Second operand has 4 states, 4 states have (on average 409.25) internal successors, (1637), 4 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:21,902 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:01:21,902 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 407 of 456 [2022-11-18 21:01:21,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:01:22,807 INFO L130 PetriNetUnfolder]: 164/2688 cut-off events. [2022-11-18 21:01:22,808 INFO L131 PetriNetUnfolder]: For 158/1065 co-relation queries the response was YES. [2022-11-18 21:01:22,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3482 conditions, 2688 events. 164/2688 cut-off events. For 158/1065 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 23552 event pairs, 48 based on Foata normal form. 14/2377 useless extension candidates. Maximal degree in co-relation 3462. Up to 152 conditions per place. [2022-11-18 21:01:22,925 INFO L137 encePairwiseOnDemand]: 452/456 looper letters, 37 selfloop transitions, 3 changer transitions 0/435 dead transitions. [2022-11-18 21:01:22,925 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 435 transitions, 1095 flow [2022-11-18 21:01:22,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 21:01:22,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 21:01:22,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1669 transitions. [2022-11-18 21:01:22,929 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9150219298245614 [2022-11-18 21:01:22,929 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1669 transitions. [2022-11-18 21:01:22,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1669 transitions. [2022-11-18 21:01:22,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:01:22,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1669 transitions. [2022-11-18 21:01:22,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 417.25) internal successors, (1669), 4 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:22,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 456.0) internal successors, (2280), 5 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:22,937 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 456.0) internal successors, (2280), 5 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:22,937 INFO L175 Difference]: Start difference. First operand has 441 places, 423 transitions, 987 flow. Second operand 4 states and 1669 transitions. [2022-11-18 21:01:22,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 435 transitions, 1095 flow [2022-11-18 21:01:22,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 435 transitions, 1093 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 21:01:22,947 INFO L231 Difference]: Finished difference. Result has 443 places, 422 transitions, 985 flow [2022-11-18 21:01:22,948 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=979, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=985, PETRI_PLACES=443, PETRI_TRANSITIONS=422} [2022-11-18 21:01:22,949 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 32 predicate places. [2022-11-18 21:01:22,950 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 422 transitions, 985 flow [2022-11-18 21:01:22,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 409.25) internal successors, (1637), 4 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:22,951 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:01:22,951 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:01:22,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 21:01:22,952 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-18 21:01:22,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:22,953 INFO L85 PathProgramCache]: Analyzing trace with hash -443232721, now seen corresponding path program 1 times [2022-11-18 21:01:22,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:01:22,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639200076] [2022-11-18 21:01:22,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:22,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:01:22,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:23,112 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 21:01:23,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:01:23,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639200076] [2022-11-18 21:01:23,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639200076] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:01:23,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:01:23,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 21:01:23,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689924093] [2022-11-18 21:01:23,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:01:23,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:01:23,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:01:23,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:01:23,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 21:01:23,117 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 396 out of 456 [2022-11-18 21:01:23,119 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 422 transitions, 985 flow. Second operand has 6 states, 6 states have (on average 398.5) internal successors, (2391), 6 states have internal predecessors, (2391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:23,120 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:01:23,120 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 396 of 456 [2022-11-18 21:01:23,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:01:25,070 INFO L130 PetriNetUnfolder]: 1475/8722 cut-off events. [2022-11-18 21:01:25,071 INFO L131 PetriNetUnfolder]: For 377/408 co-relation queries the response was YES. [2022-11-18 21:01:25,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13223 conditions, 8722 events. 1475/8722 cut-off events. For 377/408 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 99271 event pairs, 180 based on Foata normal form. 4/7850 useless extension candidates. Maximal degree in co-relation 13203. Up to 1930 conditions per place. [2022-11-18 21:01:25,270 INFO L137 encePairwiseOnDemand]: 450/456 looper letters, 47 selfloop transitions, 5 changer transitions 0/437 dead transitions. [2022-11-18 21:01:25,270 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 437 transitions, 1127 flow [2022-11-18 21:01:25,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 21:01:25,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 21:01:25,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2429 transitions. [2022-11-18 21:01:25,276 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8877923976608187 [2022-11-18 21:01:25,276 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2429 transitions. [2022-11-18 21:01:25,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2429 transitions. [2022-11-18 21:01:25,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:01:25,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2429 transitions. [2022-11-18 21:01:25,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 404.8333333333333) internal successors, (2429), 6 states have internal predecessors, (2429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:25,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 456.0) internal successors, (3192), 7 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:25,288 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 456.0) internal successors, (3192), 7 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:25,288 INFO L175 Difference]: Start difference. First operand has 443 places, 422 transitions, 985 flow. Second operand 6 states and 2429 transitions. [2022-11-18 21:01:25,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 437 transitions, 1127 flow [2022-11-18 21:01:25,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 437 transitions, 1122 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 21:01:25,306 INFO L231 Difference]: Finished difference. Result has 445 places, 421 transitions, 988 flow [2022-11-18 21:01:25,307 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=978, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=988, PETRI_PLACES=445, PETRI_TRANSITIONS=421} [2022-11-18 21:01:25,307 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 34 predicate places. [2022-11-18 21:01:25,308 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 421 transitions, 988 flow [2022-11-18 21:01:25,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 398.5) internal successors, (2391), 6 states have internal predecessors, (2391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:25,309 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:01:25,309 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:01:25,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 21:01:25,310 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-18 21:01:25,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:25,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1272281293, now seen corresponding path program 1 times [2022-11-18 21:01:25,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:01:25,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141918010] [2022-11-18 21:01:25,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:25,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:01:25,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:25,444 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 21:01:25,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:01:25,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141918010] [2022-11-18 21:01:25,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141918010] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:01:25,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:01:25,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:01:25,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059817614] [2022-11-18 21:01:25,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:01:25,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:01:25,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:01:25,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:01:25,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:01:25,473 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 417 out of 456 [2022-11-18 21:01:25,475 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 421 transitions, 988 flow. Second operand has 4 states, 4 states have (on average 419.5) internal successors, (1678), 4 states have internal predecessors, (1678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:25,479 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:01:25,479 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 417 of 456 [2022-11-18 21:01:25,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:01:27,373 INFO L130 PetriNetUnfolder]: 1065/9095 cut-off events. [2022-11-18 21:01:27,374 INFO L131 PetriNetUnfolder]: For 816/1261 co-relation queries the response was YES. [2022-11-18 21:01:27,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10837 conditions, 9095 events. 1065/9095 cut-off events. For 816/1261 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 113142 event pairs, 420 based on Foata normal form. 3/7122 useless extension candidates. Maximal degree in co-relation 10817. Up to 940 conditions per place. [2022-11-18 21:01:27,508 INFO L137 encePairwiseOnDemand]: 448/456 looper letters, 26 selfloop transitions, 6 changer transitions 0/435 dead transitions. [2022-11-18 21:01:27,508 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 435 transitions, 1086 flow [2022-11-18 21:01:27,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:01:27,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 21:01:27,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2119 transitions. [2022-11-18 21:01:27,512 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9293859649122806 [2022-11-18 21:01:27,512 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2119 transitions. [2022-11-18 21:01:27,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2119 transitions. [2022-11-18 21:01:27,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:01:27,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2119 transitions. [2022-11-18 21:01:27,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 423.8) internal successors, (2119), 5 states have internal predecessors, (2119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:27,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 456.0) internal successors, (2736), 6 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:27,522 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 456.0) internal successors, (2736), 6 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:27,522 INFO L175 Difference]: Start difference. First operand has 445 places, 421 transitions, 988 flow. Second operand 5 states and 2119 transitions. [2022-11-18 21:01:27,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 435 transitions, 1086 flow [2022-11-18 21:01:27,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 435 transitions, 1077 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 21:01:27,532 INFO L231 Difference]: Finished difference. Result has 448 places, 424 transitions, 1015 flow [2022-11-18 21:01:27,533 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=979, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1015, PETRI_PLACES=448, PETRI_TRANSITIONS=424} [2022-11-18 21:01:27,534 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 37 predicate places. [2022-11-18 21:01:27,534 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 424 transitions, 1015 flow [2022-11-18 21:01:27,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 419.5) internal successors, (1678), 4 states have internal predecessors, (1678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:27,535 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:01:27,535 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:01:27,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 21:01:27,536 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-18 21:01:27,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:27,536 INFO L85 PathProgramCache]: Analyzing trace with hash -325223692, now seen corresponding path program 1 times [2022-11-18 21:01:27,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:01:27,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829570559] [2022-11-18 21:01:27,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:27,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:01:27,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:27,641 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 21:01:27,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:01:27,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829570559] [2022-11-18 21:01:27,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829570559] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:01:27,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:01:27,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:01:27,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116969328] [2022-11-18 21:01:27,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:01:27,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:01:27,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:01:27,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:01:27,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:01:27,645 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 407 out of 456 [2022-11-18 21:01:27,647 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 424 transitions, 1015 flow. Second operand has 4 states, 4 states have (on average 409.5) internal successors, (1638), 4 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:27,647 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:01:27,647 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 407 of 456 [2022-11-18 21:01:27,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:01:28,790 INFO L130 PetriNetUnfolder]: 205/3307 cut-off events. [2022-11-18 21:01:28,791 INFO L131 PetriNetUnfolder]: For 130/1885 co-relation queries the response was YES. [2022-11-18 21:01:28,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4303 conditions, 3307 events. 205/3307 cut-off events. For 130/1885 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 31024 event pairs, 72 based on Foata normal form. 14/2916 useless extension candidates. Maximal degree in co-relation 4280. Up to 226 conditions per place. [2022-11-18 21:01:28,880 INFO L137 encePairwiseOnDemand]: 452/456 looper letters, 34 selfloop transitions, 3 changer transitions 0/436 dead transitions. [2022-11-18 21:01:28,880 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 436 transitions, 1119 flow [2022-11-18 21:01:28,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 21:01:28,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 21:01:28,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1666 transitions. [2022-11-18 21:01:28,884 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9133771929824561 [2022-11-18 21:01:28,884 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1666 transitions. [2022-11-18 21:01:28,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1666 transitions. [2022-11-18 21:01:28,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:01:28,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1666 transitions. [2022-11-18 21:01:28,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 416.5) internal successors, (1666), 4 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:28,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 456.0) internal successors, (2280), 5 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:28,893 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 456.0) internal successors, (2280), 5 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:28,893 INFO L175 Difference]: Start difference. First operand has 448 places, 424 transitions, 1015 flow. Second operand 4 states and 1666 transitions. [2022-11-18 21:01:28,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 436 transitions, 1119 flow [2022-11-18 21:01:28,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 436 transitions, 1113 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 21:01:28,904 INFO L231 Difference]: Finished difference. Result has 449 places, 424 transitions, 1018 flow [2022-11-18 21:01:28,905 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=1005, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1018, PETRI_PLACES=449, PETRI_TRANSITIONS=424} [2022-11-18 21:01:28,906 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 38 predicate places. [2022-11-18 21:01:28,906 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 424 transitions, 1018 flow [2022-11-18 21:01:28,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 409.5) internal successors, (1638), 4 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:28,907 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:01:28,907 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:01:28,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 21:01:28,907 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-18 21:01:28,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:28,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1825742713, now seen corresponding path program 1 times [2022-11-18 21:01:28,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:01:28,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232858783] [2022-11-18 21:01:28,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:28,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:01:28,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:29,082 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 21:01:29,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:01:29,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232858783] [2022-11-18 21:01:29,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232858783] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:01:29,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:01:29,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 21:01:29,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505540485] [2022-11-18 21:01:29,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:01:29,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:01:29,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:01:29,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:01:29,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 21:01:29,088 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 396 out of 456 [2022-11-18 21:01:29,091 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 424 transitions, 1018 flow. Second operand has 6 states, 6 states have (on average 398.5) internal successors, (2391), 6 states have internal predecessors, (2391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:29,092 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:01:29,092 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 396 of 456 [2022-11-18 21:01:29,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:01:38,941 INFO L130 PetriNetUnfolder]: 8531/36059 cut-off events. [2022-11-18 21:01:38,941 INFO L131 PetriNetUnfolder]: For 5408/5479 co-relation queries the response was YES. [2022-11-18 21:01:39,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51991 conditions, 36059 events. 8531/36059 cut-off events. For 5408/5479 co-relation queries the response was YES. Maximal size of possible extension queue 2555. Compared 535479 event pairs, 1224 based on Foata normal form. 0/28577 useless extension candidates. Maximal degree in co-relation 51967. Up to 10146 conditions per place. [2022-11-18 21:01:39,430 INFO L137 encePairwiseOnDemand]: 450/456 looper letters, 47 selfloop transitions, 5 changer transitions 0/437 dead transitions. [2022-11-18 21:01:39,430 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 437 transitions, 1152 flow [2022-11-18 21:01:39,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 21:01:39,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 21:01:39,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2429 transitions. [2022-11-18 21:01:39,433 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8877923976608187 [2022-11-18 21:01:39,433 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2429 transitions. [2022-11-18 21:01:39,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2429 transitions. [2022-11-18 21:01:39,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:01:39,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2429 transitions. [2022-11-18 21:01:39,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 404.8333333333333) internal successors, (2429), 6 states have internal predecessors, (2429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:39,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 456.0) internal successors, (3192), 7 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:39,443 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 456.0) internal successors, (3192), 7 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:39,443 INFO L175 Difference]: Start difference. First operand has 449 places, 424 transitions, 1018 flow. Second operand 6 states and 2429 transitions. [2022-11-18 21:01:39,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 437 transitions, 1152 flow [2022-11-18 21:01:39,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 437 transitions, 1150 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 21:01:39,464 INFO L231 Difference]: Finished difference. Result has 452 places, 423 transitions, 1024 flow [2022-11-18 21:01:39,464 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=1014, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1024, PETRI_PLACES=452, PETRI_TRANSITIONS=423} [2022-11-18 21:01:39,465 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 41 predicate places. [2022-11-18 21:01:39,465 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 423 transitions, 1024 flow [2022-11-18 21:01:39,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 398.5) internal successors, (2391), 6 states have internal predecessors, (2391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:39,466 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:01:39,466 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:01:39,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 21:01:39,467 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-18 21:01:39,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:39,467 INFO L85 PathProgramCache]: Analyzing trace with hash 763450578, now seen corresponding path program 1 times [2022-11-18 21:01:39,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:01:39,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683223509] [2022-11-18 21:01:39,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:39,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:01:39,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:39,719 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 21:01:39,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:01:39,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683223509] [2022-11-18 21:01:39,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683223509] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:01:39,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:01:39,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:01:39,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203743467] [2022-11-18 21:01:39,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:01:39,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:01:39,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:01:39,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:01:39,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:01:39,725 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 407 out of 456 [2022-11-18 21:01:39,727 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 423 transitions, 1024 flow. Second operand has 4 states, 4 states have (on average 409.25) internal successors, (1637), 4 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:39,727 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:01:39,728 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 407 of 456 [2022-11-18 21:01:39,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:01:43,743 INFO L130 PetriNetUnfolder]: 3371/13376 cut-off events. [2022-11-18 21:01:43,743 INFO L131 PetriNetUnfolder]: For 3324/5234 co-relation queries the response was YES. [2022-11-18 21:01:43,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20258 conditions, 13376 events. 3371/13376 cut-off events. For 3324/5234 co-relation queries the response was YES. Maximal size of possible extension queue 2078. Compared 197544 event pairs, 1344 based on Foata normal form. 4/9124 useless extension candidates. Maximal degree in co-relation 20234. Up to 3052 conditions per place. [2022-11-18 21:01:43,956 INFO L137 encePairwiseOnDemand]: 450/456 looper letters, 35 selfloop transitions, 4 changer transitions 0/435 dead transitions. [2022-11-18 21:01:43,956 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 435 transitions, 1130 flow [2022-11-18 21:01:43,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 21:01:43,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 21:01:43,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1669 transitions. [2022-11-18 21:01:43,960 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9150219298245614 [2022-11-18 21:01:43,961 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1669 transitions. [2022-11-18 21:01:43,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1669 transitions. [2022-11-18 21:01:43,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:01:43,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1669 transitions. [2022-11-18 21:01:43,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 417.25) internal successors, (1669), 4 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:43,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 456.0) internal successors, (2280), 5 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:43,970 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 456.0) internal successors, (2280), 5 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:43,970 INFO L175 Difference]: Start difference. First operand has 452 places, 423 transitions, 1024 flow. Second operand 4 states and 1669 transitions. [2022-11-18 21:01:43,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 435 transitions, 1130 flow [2022-11-18 21:01:43,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 435 transitions, 1121 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 21:01:43,984 INFO L231 Difference]: Finished difference. Result has 453 places, 424 transitions, 1039 flow [2022-11-18 21:01:43,985 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=1013, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1039, PETRI_PLACES=453, PETRI_TRANSITIONS=424} [2022-11-18 21:01:43,986 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 42 predicate places. [2022-11-18 21:01:43,986 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 424 transitions, 1039 flow [2022-11-18 21:01:43,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 409.25) internal successors, (1637), 4 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:43,987 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:01:43,987 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:01:43,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 21:01:43,988 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-18 21:01:43,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:43,988 INFO L85 PathProgramCache]: Analyzing trace with hash -621427782, now seen corresponding path program 1 times [2022-11-18 21:01:43,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:01:43,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917162731] [2022-11-18 21:01:43,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:43,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:01:44,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:44,105 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 21:01:44,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:01:44,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917162731] [2022-11-18 21:01:44,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917162731] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:01:44,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:01:44,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:01:44,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486207862] [2022-11-18 21:01:44,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:01:44,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:01:44,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:01:44,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:01:44,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:01:44,110 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 407 out of 456 [2022-11-18 21:01:44,112 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 424 transitions, 1039 flow. Second operand has 4 states, 4 states have (on average 409.5) internal successors, (1638), 4 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:44,112 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:01:44,112 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 407 of 456 [2022-11-18 21:01:44,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:01:46,677 INFO L130 PetriNetUnfolder]: 551/4105 cut-off events. [2022-11-18 21:01:46,678 INFO L131 PetriNetUnfolder]: For 790/2815 co-relation queries the response was YES. [2022-11-18 21:01:46,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5850 conditions, 4105 events. 551/4105 cut-off events. For 790/2815 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 45533 event pairs, 216 based on Foata normal form. 20/3320 useless extension candidates. Maximal degree in co-relation 5824. Up to 500 conditions per place. [2022-11-18 21:01:46,851 INFO L137 encePairwiseOnDemand]: 452/456 looper letters, 36 selfloop transitions, 3 changer transitions 0/435 dead transitions. [2022-11-18 21:01:46,852 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 435 transitions, 1142 flow [2022-11-18 21:01:46,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 21:01:46,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 21:01:46,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1668 transitions. [2022-11-18 21:01:46,854 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9144736842105263 [2022-11-18 21:01:46,854 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1668 transitions. [2022-11-18 21:01:46,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1668 transitions. [2022-11-18 21:01:46,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:01:46,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1668 transitions. [2022-11-18 21:01:46,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 417.0) internal successors, (1668), 4 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:46,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 456.0) internal successors, (2280), 5 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:46,860 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 456.0) internal successors, (2280), 5 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:46,860 INFO L175 Difference]: Start difference. First operand has 453 places, 424 transitions, 1039 flow. Second operand 4 states and 1668 transitions. [2022-11-18 21:01:46,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 435 transitions, 1142 flow [2022-11-18 21:01:46,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 435 transitions, 1140 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 21:01:46,870 INFO L231 Difference]: Finished difference. Result has 455 places, 423 transitions, 1037 flow [2022-11-18 21:01:46,870 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=1031, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1037, PETRI_PLACES=455, PETRI_TRANSITIONS=423} [2022-11-18 21:01:46,871 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 44 predicate places. [2022-11-18 21:01:46,871 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 423 transitions, 1037 flow [2022-11-18 21:01:46,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 409.5) internal successors, (1638), 4 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:46,872 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:01:46,872 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:01:46,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 21:01:46,872 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-18 21:01:46,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:46,873 INFO L85 PathProgramCache]: Analyzing trace with hash -2081742860, now seen corresponding path program 1 times [2022-11-18 21:01:46,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:01:46,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771215507] [2022-11-18 21:01:46,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:46,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:01:46,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:47,059 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 21:01:47,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:01:47,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771215507] [2022-11-18 21:01:47,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771215507] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:01:47,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:01:47,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:01:47,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731507602] [2022-11-18 21:01:47,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:01:47,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 21:01:47,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:01:47,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 21:01:47,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 21:01:47,064 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 391 out of 456 [2022-11-18 21:01:47,067 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 423 transitions, 1037 flow. Second operand has 8 states, 8 states have (on average 393.25) internal successors, (3146), 8 states have internal predecessors, (3146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:47,067 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:01:47,067 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 391 of 456 [2022-11-18 21:01:47,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:01:50,919 INFO L130 PetriNetUnfolder]: 1323/9623 cut-off events. [2022-11-18 21:01:50,919 INFO L131 PetriNetUnfolder]: For 778/19120 co-relation queries the response was YES. [2022-11-18 21:01:51,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13617 conditions, 9623 events. 1323/9623 cut-off events. For 778/19120 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 113448 event pairs, 172 based on Foata normal form. 18/8509 useless extension candidates. Maximal degree in co-relation 13591. Up to 1470 conditions per place. [2022-11-18 21:01:51,447 INFO L137 encePairwiseOnDemand]: 446/456 looper letters, 64 selfloop transitions, 9 changer transitions 0/455 dead transitions. [2022-11-18 21:01:51,447 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 455 transitions, 1261 flow [2022-11-18 21:01:51,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 21:01:51,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 21:01:51,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 3202 transitions. [2022-11-18 21:01:51,451 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8777412280701754 [2022-11-18 21:01:51,451 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 3202 transitions. [2022-11-18 21:01:51,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 3202 transitions. [2022-11-18 21:01:51,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:01:51,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 3202 transitions. [2022-11-18 21:01:51,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 400.25) internal successors, (3202), 8 states have internal predecessors, (3202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:51,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 456.0) internal successors, (4104), 9 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:51,460 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 456.0) internal successors, (4104), 9 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:51,460 INFO L175 Difference]: Start difference. First operand has 455 places, 423 transitions, 1037 flow. Second operand 8 states and 3202 transitions. [2022-11-18 21:01:51,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 455 transitions, 1261 flow [2022-11-18 21:01:51,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 455 transitions, 1256 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 21:01:51,473 INFO L231 Difference]: Finished difference. Result has 462 places, 424 transitions, 1062 flow [2022-11-18 21:01:51,474 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=1032, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1062, PETRI_PLACES=462, PETRI_TRANSITIONS=424} [2022-11-18 21:01:51,474 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 51 predicate places. [2022-11-18 21:01:51,474 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 424 transitions, 1062 flow [2022-11-18 21:01:51,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 393.25) internal successors, (3146), 8 states have internal predecessors, (3146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:51,475 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:01:51,475 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:01:51,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-18 21:01:51,476 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-18 21:01:51,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:51,476 INFO L85 PathProgramCache]: Analyzing trace with hash -2084390810, now seen corresponding path program 1 times [2022-11-18 21:01:51,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:01:51,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690524181] [2022-11-18 21:01:51,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:51,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:01:51,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:51,611 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 21:01:51,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:01:51,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690524181] [2022-11-18 21:01:51,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690524181] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:01:51,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:01:51,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 21:01:51,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427697816] [2022-11-18 21:01:51,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:01:51,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:01:51,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:01:51,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:01:51,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 21:01:51,616 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 396 out of 456 [2022-11-18 21:01:51,618 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 424 transitions, 1062 flow. Second operand has 6 states, 6 states have (on average 398.6666666666667) internal successors, (2392), 6 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:51,618 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:01:51,618 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 396 of 456 [2022-11-18 21:01:51,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:02:02,470 INFO L130 PetriNetUnfolder]: 8234/40457 cut-off events. [2022-11-18 21:02:02,471 INFO L131 PetriNetUnfolder]: For 5235/5519 co-relation queries the response was YES. [2022-11-18 21:02:03,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57544 conditions, 40457 events. 8234/40457 cut-off events. For 5235/5519 co-relation queries the response was YES. Maximal size of possible extension queue 3074. Compared 629895 event pairs, 1062 based on Foata normal form. 0/33355 useless extension candidates. Maximal degree in co-relation 57516. Up to 9788 conditions per place. [2022-11-18 21:02:03,246 INFO L137 encePairwiseOnDemand]: 450/456 looper letters, 46 selfloop transitions, 5 changer transitions 0/438 dead transitions. [2022-11-18 21:02:03,247 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 438 transitions, 1199 flow [2022-11-18 21:02:03,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 21:02:03,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 21:02:03,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2428 transitions. [2022-11-18 21:02:03,249 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8874269005847953 [2022-11-18 21:02:03,249 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2428 transitions. [2022-11-18 21:02:03,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2428 transitions. [2022-11-18 21:02:03,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:02:03,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2428 transitions. [2022-11-18 21:02:03,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 404.6666666666667) internal successors, (2428), 6 states have internal predecessors, (2428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:03,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 456.0) internal successors, (3192), 7 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:03,257 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 456.0) internal successors, (3192), 7 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:03,257 INFO L175 Difference]: Start difference. First operand has 462 places, 424 transitions, 1062 flow. Second operand 6 states and 2428 transitions. [2022-11-18 21:02:03,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 438 transitions, 1199 flow [2022-11-18 21:02:03,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 438 transitions, 1190 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 21:02:03,313 INFO L231 Difference]: Finished difference. Result has 462 places, 423 transitions, 1061 flow [2022-11-18 21:02:03,314 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=1051, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1061, PETRI_PLACES=462, PETRI_TRANSITIONS=423} [2022-11-18 21:02:03,314 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 51 predicate places. [2022-11-18 21:02:03,314 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 423 transitions, 1061 flow [2022-11-18 21:02:03,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 398.6666666666667) internal successors, (2392), 6 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:03,315 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:02:03,315 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:03,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-18 21:02:03,316 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-18 21:02:03,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:03,316 INFO L85 PathProgramCache]: Analyzing trace with hash -109518056, now seen corresponding path program 1 times [2022-11-18 21:02:03,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:03,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428532346] [2022-11-18 21:02:03,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:03,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:03,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:03,516 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 21:02:03,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:03,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428532346] [2022-11-18 21:02:03,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428532346] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:03,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:02:03,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:02:03,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581319580] [2022-11-18 21:02:03,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:03,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 21:02:03,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:03,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 21:02:03,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 21:02:03,524 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 391 out of 456 [2022-11-18 21:02:03,527 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 423 transitions, 1061 flow. Second operand has 8 states, 8 states have (on average 393.375) internal successors, (3147), 8 states have internal predecessors, (3147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:03,527 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:02:03,527 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 391 of 456 [2022-11-18 21:02:03,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:02:07,398 INFO L130 PetriNetUnfolder]: 1203/9457 cut-off events. [2022-11-18 21:02:07,398 INFO L131 PetriNetUnfolder]: For 930/18038 co-relation queries the response was YES. [2022-11-18 21:02:07,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13454 conditions, 9457 events. 1203/9457 cut-off events. For 930/18038 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 111954 event pairs, 172 based on Foata normal form. 18/8411 useless extension candidates. Maximal degree in co-relation 13426. Up to 1386 conditions per place. [2022-11-18 21:02:07,984 INFO L137 encePairwiseOnDemand]: 446/456 looper letters, 67 selfloop transitions, 9 changer transitions 0/457 dead transitions. [2022-11-18 21:02:07,984 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 457 transitions, 1302 flow [2022-11-18 21:02:07,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 21:02:07,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 21:02:07,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 3204 transitions. [2022-11-18 21:02:07,988 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8782894736842105 [2022-11-18 21:02:07,988 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 3204 transitions. [2022-11-18 21:02:07,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 3204 transitions. [2022-11-18 21:02:07,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:02:07,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 3204 transitions. [2022-11-18 21:02:07,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 400.5) internal successors, (3204), 8 states have internal predecessors, (3204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:07,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 456.0) internal successors, (4104), 9 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:07,997 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 456.0) internal successors, (4104), 9 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:07,997 INFO L175 Difference]: Start difference. First operand has 462 places, 423 transitions, 1061 flow. Second operand 8 states and 3204 transitions. [2022-11-18 21:02:07,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 457 transitions, 1302 flow [2022-11-18 21:02:08,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 457 transitions, 1293 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 21:02:08,012 INFO L231 Difference]: Finished difference. Result has 467 places, 424 transitions, 1082 flow [2022-11-18 21:02:08,013 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=1052, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1082, PETRI_PLACES=467, PETRI_TRANSITIONS=424} [2022-11-18 21:02:08,013 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 56 predicate places. [2022-11-18 21:02:08,014 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 424 transitions, 1082 flow [2022-11-18 21:02:08,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 393.375) internal successors, (3147), 8 states have internal predecessors, (3147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:08,014 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:02:08,015 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:08,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-18 21:02:08,015 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-18 21:02:08,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:08,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1225146517, now seen corresponding path program 1 times [2022-11-18 21:02:08,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:08,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790907023] [2022-11-18 21:02:08,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:08,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:08,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:08,114 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 21:02:08,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:08,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790907023] [2022-11-18 21:02:08,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790907023] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:08,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:02:08,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:02:08,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13384612] [2022-11-18 21:02:08,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:08,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:02:08,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:08,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:02:08,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:02:08,118 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 407 out of 456 [2022-11-18 21:02:08,120 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 424 transitions, 1082 flow. Second operand has 4 states, 4 states have (on average 409.75) internal successors, (1639), 4 states have internal predecessors, (1639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:08,120 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:02:08,120 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 407 of 456 [2022-11-18 21:02:08,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:02:10,669 INFO L130 PetriNetUnfolder]: 675/4689 cut-off events. [2022-11-18 21:02:10,670 INFO L131 PetriNetUnfolder]: For 762/3155 co-relation queries the response was YES. [2022-11-18 21:02:10,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6821 conditions, 4689 events. 675/4689 cut-off events. For 762/3155 co-relation queries the response was YES. Maximal size of possible extension queue 588. Compared 54998 event pairs, 324 based on Foata normal form. 22/3764 useless extension candidates. Maximal degree in co-relation 6791. Up to 744 conditions per place. [2022-11-18 21:02:10,985 INFO L137 encePairwiseOnDemand]: 452/456 looper letters, 33 selfloop transitions, 3 changer transitions 0/435 dead transitions. [2022-11-18 21:02:10,985 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 435 transitions, 1181 flow [2022-11-18 21:02:10,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 21:02:10,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 21:02:10,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1665 transitions. [2022-11-18 21:02:10,988 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.912828947368421 [2022-11-18 21:02:10,988 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1665 transitions. [2022-11-18 21:02:10,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1665 transitions. [2022-11-18 21:02:10,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:02:10,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1665 transitions. [2022-11-18 21:02:10,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 416.25) internal successors, (1665), 4 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:10,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 456.0) internal successors, (2280), 5 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:10,993 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 456.0) internal successors, (2280), 5 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:10,993 INFO L175 Difference]: Start difference. First operand has 467 places, 424 transitions, 1082 flow. Second operand 4 states and 1665 transitions. [2022-11-18 21:02:10,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 435 transitions, 1181 flow [2022-11-18 21:02:10,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 435 transitions, 1170 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 21:02:11,005 INFO L231 Difference]: Finished difference. Result has 465 places, 424 transitions, 1080 flow [2022-11-18 21:02:11,006 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=1067, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1080, PETRI_PLACES=465, PETRI_TRANSITIONS=424} [2022-11-18 21:02:11,006 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 54 predicate places. [2022-11-18 21:02:11,007 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 424 transitions, 1080 flow [2022-11-18 21:02:11,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 409.75) internal successors, (1639), 4 states have internal predecessors, (1639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:11,007 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:02:11,008 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:11,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-18 21:02:11,008 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-18 21:02:11,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:11,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1105144203, now seen corresponding path program 1 times [2022-11-18 21:02:11,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:11,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498278248] [2022-11-18 21:02:11,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:11,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:11,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:11,499 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 21:02:11,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:11,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498278248] [2022-11-18 21:02:11,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498278248] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:02:11,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861831661] [2022-11-18 21:02:11,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:11,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:11,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1824ed9d-9ea8-4a50-914a-b5a80a60e3e2/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:02:11,502 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1824ed9d-9ea8-4a50-914a-b5a80a60e3e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:02:11,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1824ed9d-9ea8-4a50-914a-b5a80a60e3e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 21:02:11,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:11,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 21:02:11,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:11,763 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 21:02:11,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:02:11,868 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 21:02:11,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861831661] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:02:11,869 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:02:11,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 21:02:11,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519393729] [2022-11-18 21:02:11,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:02:11,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 21:02:11,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:11,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 21:02:11,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 21:02:11,877 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 417 out of 456 [2022-11-18 21:02:11,892 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 424 transitions, 1080 flow. Second operand has 12 states, 12 states have (on average 419.8333333333333) internal successors, (5038), 12 states have internal predecessors, (5038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:11,902 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:02:11,902 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 417 of 456 [2022-11-18 21:02:11,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand