./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/bench-exp2x9.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08738cf-a817-4a9c-916f-d87b0727fe48/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08738cf-a817-4a9c-916f-d87b0727fe48/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_d08738cf-a817-4a9c-916f-d87b0727fe48/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08738cf-a817-4a9c-916f-d87b0727fe48/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/bench-exp2x9.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08738cf-a817-4a9c-916f-d87b0727fe48/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08738cf-a817-4a9c-916f-d87b0727fe48/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d6a1dd92aa2998cfb1326128fd549d301e029b328accb048c4d2ec692e416e63 --- 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 20:36:08,611 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:36:08,614 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:36:08,662 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:36:08,664 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:36:08,669 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:36:08,672 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:36:08,677 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:36:08,681 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:36:08,684 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:36:08,690 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:36:08,693 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:36:08,694 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:36:08,700 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:36:08,701 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:36:08,703 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:36:08,706 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:36:08,707 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:36:08,709 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:36:08,711 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:36:08,718 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:36:08,720 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:36:08,722 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:36:08,724 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:36:08,731 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:36:08,737 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:36:08,738 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:36:08,739 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:36:08,741 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:36:08,742 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:36:08,743 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:36:08,744 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:36:08,745 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:36:08,748 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:36:08,751 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:36:08,752 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:36:08,753 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:36:08,754 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:36:08,754 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:36:08,755 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:36:08,756 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:36:08,757 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08738cf-a817-4a9c-916f-d87b0727fe48/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:36:08,802 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:36:08,805 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:36:08,806 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:36:08,807 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:36:08,808 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:36:08,808 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:36:08,809 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:36:08,809 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:36:08,809 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:36:08,810 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:36:08,811 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:36:08,811 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:36:08,812 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:36:08,812 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:36:08,812 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:36:08,812 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:36:08,813 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:36:08,813 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:36:08,813 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:36:08,813 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:36:08,814 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:36:08,814 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:36:08,814 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:36:08,815 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:36:08,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:36:08,815 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:36:08,815 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:36:08,816 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:36:08,816 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:36:08,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:36:08,818 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:36:08,818 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:36:08,819 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:36:08,819 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_d08738cf-a817-4a9c-916f-d87b0727fe48/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08738cf-a817-4a9c-916f-d87b0727fe48/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6a1dd92aa2998cfb1326128fd549d301e029b328accb048c4d2ec692e416e63 [2022-11-18 20:36:09,166 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:36:09,219 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:36:09,222 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:36:09,224 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:36:09,225 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:36:09,227 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08738cf-a817-4a9c-916f-d87b0727fe48/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/bench-exp2x9.wvr.c [2022-11-18 20:36:09,334 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08738cf-a817-4a9c-916f-d87b0727fe48/bin/uautomizer-TMbwUNV5ro/data/8aa45130d/f0d647ec453d49b1b11e9a47a41f1b20/FLAGc23924cb1 [2022-11-18 20:36:09,872 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:36:09,873 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08738cf-a817-4a9c-916f-d87b0727fe48/sv-benchmarks/c/weaver/bench-exp2x9.wvr.c [2022-11-18 20:36:09,882 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08738cf-a817-4a9c-916f-d87b0727fe48/bin/uautomizer-TMbwUNV5ro/data/8aa45130d/f0d647ec453d49b1b11e9a47a41f1b20/FLAGc23924cb1 [2022-11-18 20:36:10,253 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08738cf-a817-4a9c-916f-d87b0727fe48/bin/uautomizer-TMbwUNV5ro/data/8aa45130d/f0d647ec453d49b1b11e9a47a41f1b20 [2022-11-18 20:36:10,258 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:36:10,261 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:36:10,265 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:36:10,266 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:36:10,270 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:36:10,271 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:36:10" (1/1) ... [2022-11-18 20:36:10,273 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@470a65b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:36:10, skipping insertion in model container [2022-11-18 20:36:10,273 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:36:10" (1/1) ... [2022-11-18 20:36:10,282 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:36:10,320 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:36:10,668 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_d08738cf-a817-4a9c-916f-d87b0727fe48/sv-benchmarks/c/weaver/bench-exp2x9.wvr.c[2669,2682] [2022-11-18 20:36:10,674 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:36:10,684 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:36:10,714 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_d08738cf-a817-4a9c-916f-d87b0727fe48/sv-benchmarks/c/weaver/bench-exp2x9.wvr.c[2669,2682] [2022-11-18 20:36:10,715 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:36:10,732 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:36:10,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:36:10 WrapperNode [2022-11-18 20:36:10,733 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:36:10,735 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:36:10,735 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:36:10,735 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:36:10,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:36:10" (1/1) ... [2022-11-18 20:36:10,755 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:36:10" (1/1) ... [2022-11-18 20:36:10,779 INFO L138 Inliner]: procedures = 20, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 91 [2022-11-18 20:36:10,780 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:36:10,781 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:36:10,781 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:36:10,781 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:36:10,793 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:36:10" (1/1) ... [2022-11-18 20:36:10,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:36:10" (1/1) ... [2022-11-18 20:36:10,813 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:36:10" (1/1) ... [2022-11-18 20:36:10,814 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:36:10" (1/1) ... [2022-11-18 20:36:10,821 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:36:10" (1/1) ... [2022-11-18 20:36:10,842 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:36:10" (1/1) ... [2022-11-18 20:36:10,844 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:36:10" (1/1) ... [2022-11-18 20:36:10,846 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:36:10" (1/1) ... [2022-11-18 20:36:10,849 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:36:10,862 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:36:10,862 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:36:10,862 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:36:10,864 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:36:10" (1/1) ... [2022-11-18 20:36:10,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:36:10,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08738cf-a817-4a9c-916f-d87b0727fe48/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:36:10,906 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08738cf-a817-4a9c-916f-d87b0727fe48/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:36:10,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08738cf-a817-4a9c-916f-d87b0727fe48/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:36:10,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:36:10,954 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 20:36:10,955 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 20:36:10,955 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 20:36:10,955 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 20:36:10,955 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 20:36:10,955 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 20:36:10,956 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-18 20:36:10,956 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-18 20:36:10,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:36:10,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:36:10,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:36:10,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:36:10,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:36:10,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:36:10,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:36:10,959 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 20:36:11,087 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:36:11,090 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:36:11,476 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:36:11,487 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:36:11,487 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-18 20:36:11,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:36:11 BoogieIcfgContainer [2022-11-18 20:36:11,490 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:36:11,493 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:36:11,494 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:36:11,498 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:36:11,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:36:10" (1/3) ... [2022-11-18 20:36:11,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@505943cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:36:11, skipping insertion in model container [2022-11-18 20:36:11,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:36:10" (2/3) ... [2022-11-18 20:36:11,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@505943cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:36:11, skipping insertion in model container [2022-11-18 20:36:11,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:36:11" (3/3) ... [2022-11-18 20:36:11,503 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp2x9.wvr.c [2022-11-18 20:36:11,514 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:36:11,527 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:36:11,527 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:36:11,528 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:36:11,765 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-18 20:36:11,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 149 transitions, 330 flow [2022-11-18 20:36:11,995 INFO L130 PetriNetUnfolder]: 10/145 cut-off events. [2022-11-18 20:36:11,995 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-18 20:36:12,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 145 events. 10/145 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 129 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 102. Up to 2 conditions per place. [2022-11-18 20:36:12,005 INFO L82 GeneralOperation]: Start removeDead. Operand has 152 places, 149 transitions, 330 flow [2022-11-18 20:36:12,011 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 135 places, 132 transitions, 288 flow [2022-11-18 20:36:12,024 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:36:12,032 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;@1603d446, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:36:12,032 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-18 20:36:12,081 INFO L130 PetriNetUnfolder]: 10/131 cut-off events. [2022-11-18 20:36:12,082 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-18 20:36:12,083 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:36:12,084 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] [2022-11-18 20:36:12,085 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:36:12,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:12,092 INFO L85 PathProgramCache]: Analyzing trace with hash -322697145, now seen corresponding path program 1 times [2022-11-18 20:36:12,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:12,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024403884] [2022-11-18 20:36:12,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:12,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:12,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:12,509 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 20:36:12,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:12,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024403884] [2022-11-18 20:36:12,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024403884] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:36:12,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:36:12,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:36:12,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813443521] [2022-11-18 20:36:12,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:36:12,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:36:12,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:12,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:36:12,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:36:12,579 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 149 [2022-11-18 20:36:12,583 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 132 transitions, 288 flow. Second operand has 2 states, 2 states have (on average 140.0) internal successors, (280), 2 states have internal predecessors, (280), 0 states have call successors, (0), 0 states 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 20:36:12,583 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:36:12,584 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 149 [2022-11-18 20:36:12,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:36:12,740 INFO L130 PetriNetUnfolder]: 4/126 cut-off events. [2022-11-18 20:36:12,744 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-18 20:36:12,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 126 events. 4/126 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 122 event pairs, 0 based on Foata normal form. 18/138 useless extension candidates. Maximal degree in co-relation 101. Up to 9 conditions per place. [2022-11-18 20:36:12,751 INFO L137 encePairwiseOnDemand]: 143/149 looper letters, 8 selfloop transitions, 0 changer transitions 2/126 dead transitions. [2022-11-18 20:36:12,752 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 126 transitions, 292 flow [2022-11-18 20:36:12,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:36:12,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 20:36:12,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 282 transitions. [2022-11-18 20:36:12,781 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9463087248322147 [2022-11-18 20:36:12,782 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 282 transitions. [2022-11-18 20:36:12,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 282 transitions. [2022-11-18 20:36:12,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:36:12,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 282 transitions. [2022-11-18 20:36:12,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 141.0) internal successors, (282), 2 states have internal predecessors, (282), 0 states have call successors, (0), 0 states 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 20:36:12,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states 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 20:36:12,812 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states 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 20:36:12,816 INFO L175 Difference]: Start difference. First operand has 135 places, 132 transitions, 288 flow. Second operand 2 states and 282 transitions. [2022-11-18 20:36:12,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 126 transitions, 292 flow [2022-11-18 20:36:12,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 126 transitions, 276 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-18 20:36:12,831 INFO L231 Difference]: Finished difference. Result has 128 places, 124 transitions, 256 flow [2022-11-18 20:36:12,834 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=256, PETRI_PLACES=128, PETRI_TRANSITIONS=124} [2022-11-18 20:36:12,839 INFO L288 CegarLoopForPetriNet]: 135 programPoint places, -7 predicate places. [2022-11-18 20:36:12,840 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 124 transitions, 256 flow [2022-11-18 20:36:12,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 140.0) internal successors, (280), 2 states have internal predecessors, (280), 0 states have call successors, (0), 0 states 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 20:36:12,840 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:36:12,841 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] [2022-11-18 20:36:12,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:36:12,843 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:36:12,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:12,845 INFO L85 PathProgramCache]: Analyzing trace with hash 735830245, now seen corresponding path program 1 times [2022-11-18 20:36:12,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:12,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907657828] [2022-11-18 20:36:12,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:12,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:13,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:14,351 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 20:36:14,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:14,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907657828] [2022-11-18 20:36:14,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907657828] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:36:14,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:36:14,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:36:14,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029053926] [2022-11-18 20:36:14,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:36:14,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:36:14,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:14,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:36:14,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:36:14,358 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 149 [2022-11-18 20:36:14,360 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 124 transitions, 256 flow. Second operand has 7 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 0 states have call successors, (0), 0 states 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 20:36:14,360 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:36:14,360 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 149 [2022-11-18 20:36:14,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:36:20,048 INFO L130 PetriNetUnfolder]: 24847/33450 cut-off events. [2022-11-18 20:36:20,048 INFO L131 PetriNetUnfolder]: For 860/934 co-relation queries the response was YES. [2022-11-18 20:36:20,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67538 conditions, 33450 events. 24847/33450 cut-off events. For 860/934 co-relation queries the response was YES. Maximal size of possible extension queue 1148. Compared 187470 event pairs, 11708 based on Foata normal form. 1/29664 useless extension candidates. Maximal degree in co-relation 67535. Up to 32788 conditions per place. [2022-11-18 20:36:20,360 INFO L137 encePairwiseOnDemand]: 139/149 looper letters, 71 selfloop transitions, 7 changer transitions 4/146 dead transitions. [2022-11-18 20:36:20,360 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 146 transitions, 471 flow [2022-11-18 20:36:20,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:36:20,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:36:20,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 643 transitions. [2022-11-18 20:36:20,367 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6164908916586769 [2022-11-18 20:36:20,367 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 643 transitions. [2022-11-18 20:36:20,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 643 transitions. [2022-11-18 20:36:20,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:36:20,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 643 transitions. [2022-11-18 20:36:20,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 91.85714285714286) internal successors, (643), 7 states have internal predecessors, (643), 0 states have call successors, (0), 0 states 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 20:36:20,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states 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 20:36:20,378 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states 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 20:36:20,378 INFO L175 Difference]: Start difference. First operand has 128 places, 124 transitions, 256 flow. Second operand 7 states and 643 transitions. [2022-11-18 20:36:20,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 146 transitions, 471 flow [2022-11-18 20:36:20,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 146 transitions, 471 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:36:20,386 INFO L231 Difference]: Finished difference. Result has 135 places, 128 transitions, 297 flow [2022-11-18 20:36:20,387 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=297, PETRI_PLACES=135, PETRI_TRANSITIONS=128} [2022-11-18 20:36:20,388 INFO L288 CegarLoopForPetriNet]: 135 programPoint places, 0 predicate places. [2022-11-18 20:36:20,388 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 128 transitions, 297 flow [2022-11-18 20:36:20,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 0 states have call successors, (0), 0 states 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 20:36:20,389 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:36:20,390 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] [2022-11-18 20:36:20,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:36:20,390 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:36:20,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:20,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1042539278, now seen corresponding path program 1 times [2022-11-18 20:36:20,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:20,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998371849] [2022-11-18 20:36:20,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:20,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:20,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:21,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:21,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:21,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998371849] [2022-11-18 20:36:21,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998371849] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:36:21,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:36:21,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:36:21,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828285831] [2022-11-18 20:36:21,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:36:21,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:36:21,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:21,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:36:21,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:36:21,022 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 149 [2022-11-18 20:36:21,024 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 128 transitions, 297 flow. Second operand has 6 states, 6 states have (on average 101.66666666666667) internal successors, (610), 6 states have internal predecessors, (610), 0 states have call successors, (0), 0 states 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 20:36:21,024 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:36:21,024 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 149 [2022-11-18 20:36:21,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:36:22,555 INFO L130 PetriNetUnfolder]: 5400/8478 cut-off events. [2022-11-18 20:36:22,555 INFO L131 PetriNetUnfolder]: For 879/948 co-relation queries the response was YES. [2022-11-18 20:36:22,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16984 conditions, 8478 events. 5400/8478 cut-off events. For 879/948 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 53561 event pairs, 892 based on Foata normal form. 4/6419 useless extension candidates. Maximal degree in co-relation 16977. Up to 5921 conditions per place. [2022-11-18 20:36:22,805 INFO L137 encePairwiseOnDemand]: 136/149 looper letters, 76 selfloop transitions, 19 changer transitions 0/177 dead transitions. [2022-11-18 20:36:22,807 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 177 transitions, 618 flow [2022-11-18 20:36:22,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:36:22,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:36:22,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 764 transitions. [2022-11-18 20:36:22,819 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7325023969319271 [2022-11-18 20:36:22,821 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 764 transitions. [2022-11-18 20:36:22,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 764 transitions. [2022-11-18 20:36:22,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:36:22,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 764 transitions. [2022-11-18 20:36:22,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.14285714285714) internal successors, (764), 7 states have internal predecessors, (764), 0 states have call successors, (0), 0 states 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 20:36:22,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states 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 20:36:22,829 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states 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 20:36:22,830 INFO L175 Difference]: Start difference. First operand has 135 places, 128 transitions, 297 flow. Second operand 7 states and 764 transitions. [2022-11-18 20:36:22,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 177 transitions, 618 flow [2022-11-18 20:36:22,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 177 transitions, 599 flow, removed 4 selfloop flow, removed 5 redundant places. [2022-11-18 20:36:22,839 INFO L231 Difference]: Finished difference. Result has 137 places, 138 transitions, 390 flow [2022-11-18 20:36:22,839 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=390, PETRI_PLACES=137, PETRI_TRANSITIONS=138} [2022-11-18 20:36:22,842 INFO L288 CegarLoopForPetriNet]: 135 programPoint places, 2 predicate places. [2022-11-18 20:36:22,842 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 138 transitions, 390 flow [2022-11-18 20:36:22,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 101.66666666666667) internal successors, (610), 6 states have internal predecessors, (610), 0 states have call successors, (0), 0 states 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 20:36:22,843 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:36:22,844 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] [2022-11-18 20:36:22,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:36:22,844 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:36:22,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:22,845 INFO L85 PathProgramCache]: Analyzing trace with hash 637841870, now seen corresponding path program 1 times [2022-11-18 20:36:22,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:22,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999829432] [2022-11-18 20:36:22,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:22,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:22,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:23,446 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 20:36:23,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:23,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999829432] [2022-11-18 20:36:23,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999829432] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:36:23,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212748243] [2022-11-18 20:36:23,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:23,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:36:23,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08738cf-a817-4a9c-916f-d87b0727fe48/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:36:23,452 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08738cf-a817-4a9c-916f-d87b0727fe48/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:36:23,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08738cf-a817-4a9c-916f-d87b0727fe48/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:36:23,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:23,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:36:23,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:36:24,260 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 20:36:24,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:36:24,647 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 20:36:24,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212748243] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:36:24,648 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:36:24,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2022-11-18 20:36:24,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771224067] [2022-11-18 20:36:24,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:36:24,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 20:36:24,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:24,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 20:36:24,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:36:24,657 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 149 [2022-11-18 20:36:24,659 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 138 transitions, 390 flow. Second operand has 14 states, 14 states have (on average 82.78571428571429) internal successors, (1159), 14 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states 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 20:36:24,660 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:36:24,660 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 149 [2022-11-18 20:36:24,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:36:34,086 INFO L130 PetriNetUnfolder]: 39810/59465 cut-off events. [2022-11-18 20:36:34,087 INFO L131 PetriNetUnfolder]: For 24175/24197 co-relation queries the response was YES. [2022-11-18 20:36:34,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136106 conditions, 59465 events. 39810/59465 cut-off events. For 24175/24197 co-relation queries the response was YES. Maximal size of possible extension queue 2161. Compared 436919 event pairs, 16643 based on Foata normal form. 0/56183 useless extension candidates. Maximal degree in co-relation 136098. Up to 34314 conditions per place. [2022-11-18 20:36:34,809 INFO L137 encePairwiseOnDemand]: 134/149 looper letters, 283 selfloop transitions, 30 changer transitions 1/376 dead transitions. [2022-11-18 20:36:34,810 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 376 transitions, 1872 flow [2022-11-18 20:36:34,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:36:34,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-18 20:36:34,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1360 transitions. [2022-11-18 20:36:34,821 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6519654841802492 [2022-11-18 20:36:34,821 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1360 transitions. [2022-11-18 20:36:34,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1360 transitions. [2022-11-18 20:36:34,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:36:34,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1360 transitions. [2022-11-18 20:36:34,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 97.14285714285714) internal successors, (1360), 14 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states 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 20:36:34,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 149.0) internal successors, (2235), 15 states have internal predecessors, (2235), 0 states have call successors, (0), 0 states 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 20:36:34,838 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 149.0) internal successors, (2235), 15 states have internal predecessors, (2235), 0 states have call successors, (0), 0 states 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 20:36:34,838 INFO L175 Difference]: Start difference. First operand has 137 places, 138 transitions, 390 flow. Second operand 14 states and 1360 transitions. [2022-11-18 20:36:34,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 376 transitions, 1872 flow [2022-11-18 20:36:34,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 376 transitions, 1868 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:36:34,890 INFO L231 Difference]: Finished difference. Result has 157 places, 156 transitions, 597 flow [2022-11-18 20:36:34,891 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=597, PETRI_PLACES=157, PETRI_TRANSITIONS=156} [2022-11-18 20:36:34,892 INFO L288 CegarLoopForPetriNet]: 135 programPoint places, 22 predicate places. [2022-11-18 20:36:34,893 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 156 transitions, 597 flow [2022-11-18 20:36:34,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 82.78571428571429) internal successors, (1159), 14 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states 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 20:36:34,894 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:36:34,894 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] [2022-11-18 20:36:34,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08738cf-a817-4a9c-916f-d87b0727fe48/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:36:35,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08738cf-a817-4a9c-916f-d87b0727fe48/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:36:35,101 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:36:35,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:35,102 INFO L85 PathProgramCache]: Analyzing trace with hash -2018034240, now seen corresponding path program 2 times [2022-11-18 20:36:35,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:35,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709830174] [2022-11-18 20:36:35,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:35,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:35,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:35,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:35,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:35,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709830174] [2022-11-18 20:36:35,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709830174] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:36:35,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:36:35,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:36:35,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807860773] [2022-11-18 20:36:35,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:36:35,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:36:35,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:35,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:36:35,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:36:35,605 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 149 [2022-11-18 20:36:35,607 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 156 transitions, 597 flow. Second operand has 6 states, 6 states have (on average 101.66666666666667) internal successors, (610), 6 states have internal predecessors, (610), 0 states have call successors, (0), 0 states 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 20:36:35,607 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:36:35,608 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 149 [2022-11-18 20:36:35,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:36:37,156 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([333] L38-1-->L38-2: Formula: (not (< (mod v_~x1~0_1 4294967296) (mod v_~n~0_1 4294967296))) InVars {~n~0=v_~n~0_1, ~x1~0=v_~x1~0_1} OutVars{~n~0=v_~n~0_1, ~x1~0=v_~x1~0_1} AuxVars[] AssignedVars[][87], [30#L109-4true, 42#L38-2true, 18#L67true, 189#true, 91#L54true, Black: 162#(and (= (+ ~x4~0 (* (div ~x3~0 4294967296) 4294967296)) (+ ~x3~0 (* (div ~x4~0 4294967296) 4294967296))) (= (+ (* (div ~x1~0 4294967296) 4294967296) ~x2~0) (+ ~x1~0 (* (div ~x2~0 4294967296) 4294967296)))), 155#true, Black: 808#(and (= (mod ~x2~0 4294967296) (mod ~x1~0 4294967296)) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (< 0 (mod ~x1~0 4294967296))), Black: 195#(<= (+ ~x2~0 (* (div ~n~0 4294967296) 4294967296) 1) (+ ~n~0 (* (div ~x2~0 4294967296) 4294967296))), Black: 806#(and (< (mod ~x2~0 4294967296) (mod ~n~0 4294967296)) (< 0 (mod ~x2~0 4294967296)) (< ~x2~0 (+ (mod ~x1~0 4294967296) (* (div ~x2~0 4294967296) 4294967296) 1))), Black: 810#(and (= (mod ~x2~0 4294967296) (mod ~x1~0 4294967296)) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (< (mod ~x2~0 4294967296) (mod ~n~0 4294967296)) (< 0 (mod ~x1~0 4294967296))), Black: 804#(and (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (not (<= ~x1~0 (* (div ~x1~0 4294967296) 4294967296))) (= (+ ~x4~0 (* (div ~x3~0 4294967296) 4294967296)) (+ ~x3~0 (* (div ~x4~0 4294967296) 4294967296))) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (not (<= ~x3~0 (* (div ~x3~0 4294967296) 4294967296))) (= (+ (* (div ~x1~0 4294967296) 4294967296) ~x2~0) (+ ~x1~0 (* (div ~x2~0 4294967296) 4294967296))) (<= (+ ~x2~0 (* (div ~n~0 4294967296) 4294967296) 1) (+ ~n~0 (* (div ~x2~0 4294967296) 4294967296)))), Black: 802#(and (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (= (+ ~x4~0 (* (div ~x3~0 4294967296) 4294967296)) (+ ~x3~0 (* (div ~x4~0 4294967296) 4294967296))) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (< (* (div ~x3~0 4294967296) 4294967296) ~x3~0) (= (+ (* (div ~x1~0 4294967296) 4294967296) ~x2~0) (+ ~x1~0 (* (div ~x2~0 4294967296) 4294967296))) (< (* (div ~x1~0 4294967296) 4294967296) ~x1~0)), Black: 814#(and (= (mod ~x2~0 4294967296) (mod ~x1~0 4294967296)) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (< 0 (mod ~x1~0 4294967296))), Black: 388#(and (< (mod ~x2~0 4294967296) (mod ~n~0 4294967296)) (< 0 (mod ~x2~0 4294967296))), Black: 179#(<= (+ ~x3~0 (* (div ~x4~0 4294967296) 4294967296)) (+ ~x4~0 (* (div ~x3~0 4294967296) 4294967296))), 834#(and (<= (+ ~x3~0 (* (div ~n~0 4294967296) 4294967296) 1) (+ ~n~0 (* (div ~x3~0 4294967296) 4294967296))) (<= (+ ~x3~0 (* (div ~x4~0 4294967296) 4294967296)) (+ ~x4~0 (* (div ~x3~0 4294967296) 4294967296)))), Black: 180#(<= (+ ~n~0 (* (div ~x4~0 4294967296) 4294967296)) (+ ~x4~0 (* (div ~n~0 4294967296) 4294967296))), 184#(and (<= (+ ~n~0 (* (div ~x4~0 4294967296) 4294967296)) (+ ~x4~0 (* (div ~n~0 4294967296) 4294967296))) (<= (+ ~x3~0 (* (div ~x4~0 4294967296) 4294967296)) (+ ~x4~0 (* (div ~x3~0 4294967296) 4294967296)))), 121#L80-2true]) [2022-11-18 20:36:37,156 INFO L383 tUnfolder$Statistics]: this new event has 80 ancestors and is cut-off event [2022-11-18 20:36:37,156 INFO L386 tUnfolder$Statistics]: existing Event has 72 ancestors and is cut-off event [2022-11-18 20:36:37,156 INFO L386 tUnfolder$Statistics]: existing Event has 72 ancestors and is cut-off event [2022-11-18 20:36:37,156 INFO L386 tUnfolder$Statistics]: existing Event has 64 ancestors and is cut-off event [2022-11-18 20:36:38,661 INFO L130 PetriNetUnfolder]: 11236/17917 cut-off events. [2022-11-18 20:36:38,662 INFO L131 PetriNetUnfolder]: For 37018/38155 co-relation queries the response was YES. [2022-11-18 20:36:38,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54775 conditions, 17917 events. 11236/17917 cut-off events. For 37018/38155 co-relation queries the response was YES. Maximal size of possible extension queue 1445. Compared 141626 event pairs, 2629 based on Foata normal form. 460/17694 useless extension candidates. Maximal degree in co-relation 54758. Up to 11609 conditions per place. [2022-11-18 20:36:38,852 INFO L137 encePairwiseOnDemand]: 138/149 looper letters, 105 selfloop transitions, 22 changer transitions 0/214 dead transitions. [2022-11-18 20:36:38,853 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 214 transitions, 1137 flow [2022-11-18 20:36:38,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:36:38,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:36:38,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 764 transitions. [2022-11-18 20:36:38,857 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7325023969319271 [2022-11-18 20:36:38,857 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 764 transitions. [2022-11-18 20:36:38,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 764 transitions. [2022-11-18 20:36:38,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:36:38,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 764 transitions. [2022-11-18 20:36:38,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.14285714285714) internal successors, (764), 7 states have internal predecessors, (764), 0 states have call successors, (0), 0 states 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 20:36:38,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states 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 20:36:38,864 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states 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 20:36:38,864 INFO L175 Difference]: Start difference. First operand has 157 places, 156 transitions, 597 flow. Second operand 7 states and 764 transitions. [2022-11-18 20:36:38,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 214 transitions, 1137 flow [2022-11-18 20:36:38,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 214 transitions, 1122 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:36:38,912 INFO L231 Difference]: Finished difference. Result has 163 places, 160 transitions, 692 flow [2022-11-18 20:36:38,913 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=553, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=692, PETRI_PLACES=163, PETRI_TRANSITIONS=160} [2022-11-18 20:36:38,916 INFO L288 CegarLoopForPetriNet]: 135 programPoint places, 28 predicate places. [2022-11-18 20:36:38,916 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 160 transitions, 692 flow [2022-11-18 20:36:38,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 101.66666666666667) internal successors, (610), 6 states have internal predecessors, (610), 0 states have call successors, (0), 0 states 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 20:36:38,917 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:36:38,918 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] [2022-11-18 20:36:38,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:36:38,918 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:36:38,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:38,919 INFO L85 PathProgramCache]: Analyzing trace with hash -907115666, now seen corresponding path program 1 times [2022-11-18 20:36:38,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:38,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806087070] [2022-11-18 20:36:38,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:38,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:39,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:39,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:39,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:39,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806087070] [2022-11-18 20:36:39,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806087070] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:36:39,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:36:39,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:36:39,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513606663] [2022-11-18 20:36:39,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:36:39,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:36:39,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:39,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:36:39,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:36:39,458 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 149 [2022-11-18 20:36:39,459 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 160 transitions, 692 flow. Second operand has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states 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 20:36:39,459 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:36:39,459 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 149 [2022-11-18 20:36:39,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:36:49,488 INFO L130 PetriNetUnfolder]: 42908/63059 cut-off events. [2022-11-18 20:36:49,488 INFO L131 PetriNetUnfolder]: For 123256/123340 co-relation queries the response was YES. [2022-11-18 20:36:49,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190907 conditions, 63059 events. 42908/63059 cut-off events. For 123256/123340 co-relation queries the response was YES. Maximal size of possible extension queue 2196. Compared 453037 event pairs, 29835 based on Foata normal form. 34/62765 useless extension candidates. Maximal degree in co-relation 190886. Up to 57668 conditions per place. [2022-11-18 20:36:49,986 INFO L137 encePairwiseOnDemand]: 138/149 looper letters, 112 selfloop transitions, 16 changer transitions 5/195 dead transitions. [2022-11-18 20:36:49,986 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 195 transitions, 1197 flow [2022-11-18 20:36:49,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:36:49,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:36:49,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 562 transitions. [2022-11-18 20:36:49,989 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6286353467561522 [2022-11-18 20:36:49,989 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 562 transitions. [2022-11-18 20:36:49,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 562 transitions. [2022-11-18 20:36:49,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:36:49,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 562 transitions. [2022-11-18 20:36:49,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 93.66666666666667) internal successors, (562), 6 states have internal predecessors, (562), 0 states have call successors, (0), 0 states 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 20:36:49,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 149.0) internal successors, (1043), 7 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:49,996 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 149.0) internal successors, (1043), 7 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:49,996 INFO L175 Difference]: Start difference. First operand has 163 places, 160 transitions, 692 flow. Second operand 6 states and 562 transitions. [2022-11-18 20:36:49,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 195 transitions, 1197 flow [2022-11-18 20:36:50,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 195 transitions, 1185 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-11-18 20:36:50,302 INFO L231 Difference]: Finished difference. Result has 168 places, 165 transitions, 803 flow [2022-11-18 20:36:50,303 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=684, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=803, PETRI_PLACES=168, PETRI_TRANSITIONS=165} [2022-11-18 20:36:50,304 INFO L288 CegarLoopForPetriNet]: 135 programPoint places, 33 predicate places. [2022-11-18 20:36:50,305 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 165 transitions, 803 flow [2022-11-18 20:36:50,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states 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 20:36:50,305 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:36:50,306 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] [2022-11-18 20:36:50,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:36:50,306 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:36:50,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:50,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1482922462, now seen corresponding path program 1 times [2022-11-18 20:36:50,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:50,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89170762] [2022-11-18 20:36:50,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:50,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:50,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:50,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:50,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:50,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89170762] [2022-11-18 20:36:50,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89170762] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:36:50,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:36:50,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:36:50,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284009705] [2022-11-18 20:36:50,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:36:50,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:36:50,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:50,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:36:50,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:36:50,813 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 149 [2022-11-18 20:36:50,814 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 165 transitions, 803 flow. Second operand has 7 states, 7 states have (on average 83.42857142857143) internal successors, (584), 7 states have internal predecessors, (584), 0 states have call successors, (0), 0 states 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 20:36:50,814 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:36:50,814 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 149 [2022-11-18 20:36:50,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:37:02,342 INFO L130 PetriNetUnfolder]: 52329/78245 cut-off events. [2022-11-18 20:37:02,342 INFO L131 PetriNetUnfolder]: For 166341/166410 co-relation queries the response was YES. [2022-11-18 20:37:02,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238461 conditions, 78245 events. 52329/78245 cut-off events. For 166341/166410 co-relation queries the response was YES. Maximal size of possible extension queue 2991. Compared 603008 event pairs, 24152 based on Foata normal form. 1360/79222 useless extension candidates. Maximal degree in co-relation 238437. Up to 50836 conditions per place. [2022-11-18 20:37:03,449 INFO L137 encePairwiseOnDemand]: 139/149 looper letters, 165 selfloop transitions, 22 changer transitions 2/251 dead transitions. [2022-11-18 20:37:03,449 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 251 transitions, 1687 flow [2022-11-18 20:37:03,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:37:03,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:37:03,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 677 transitions. [2022-11-18 20:37:03,465 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6490891658676894 [2022-11-18 20:37:03,466 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 677 transitions. [2022-11-18 20:37:03,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 677 transitions. [2022-11-18 20:37:03,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:37:03,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 677 transitions. [2022-11-18 20:37:03,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 96.71428571428571) internal successors, (677), 7 states have internal predecessors, (677), 0 states have call successors, (0), 0 states 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 20:37:03,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states 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 20:37:03,476 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states 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 20:37:03,476 INFO L175 Difference]: Start difference. First operand has 168 places, 165 transitions, 803 flow. Second operand 7 states and 677 transitions. [2022-11-18 20:37:03,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 251 transitions, 1687 flow [2022-11-18 20:37:05,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 251 transitions, 1629 flow, removed 20 selfloop flow, removed 3 redundant places. [2022-11-18 20:37:05,157 INFO L231 Difference]: Finished difference. Result has 175 places, 170 transitions, 905 flow [2022-11-18 20:37:05,158 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=771, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=905, PETRI_PLACES=175, PETRI_TRANSITIONS=170} [2022-11-18 20:37:05,159 INFO L288 CegarLoopForPetriNet]: 135 programPoint places, 40 predicate places. [2022-11-18 20:37:05,159 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 170 transitions, 905 flow [2022-11-18 20:37:05,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 83.42857142857143) internal successors, (584), 7 states have internal predecessors, (584), 0 states have call successors, (0), 0 states 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 20:37:05,160 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:37:05,160 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] [2022-11-18 20:37:05,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:37:05,161 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:37:05,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:37:05,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1881884424, now seen corresponding path program 2 times [2022-11-18 20:37:05,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:37:05,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874010305] [2022-11-18 20:37:05,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:37:05,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:37:05,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:05,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:37:05,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:37:05,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874010305] [2022-11-18 20:37:05,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874010305] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:37:05,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:37:05,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:37:05,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071181887] [2022-11-18 20:37:05,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:37:05,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:37:05,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:37:05,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:37:05,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:37:05,564 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 149 [2022-11-18 20:37:05,565 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 170 transitions, 905 flow. Second operand has 6 states, 6 states have (on average 101.66666666666667) internal successors, (610), 6 states have internal predecessors, (610), 0 states have call successors, (0), 0 states 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 20:37:05,565 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:37:05,565 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 149 [2022-11-18 20:37:05,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:37:06,627 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([333] L38-1-->L38-2: Formula: (not (< (mod v_~x1~0_1 4294967296) (mod v_~n~0_1 4294967296))) InVars {~n~0=v_~n~0_1, ~x1~0=v_~x1~0_1} OutVars{~n~0=v_~n~0_1, ~x1~0=v_~x1~0_1} AuxVars[] AssignedVars[][66], [30#L109-4true, 42#L38-2true, 189#true, 18#L67true, Black: 830#(<= (+ ~x3~0 (* (div ~n~0 4294967296) 4294967296) 1) (+ ~n~0 (* (div ~x3~0 4294967296) 4294967296))), Black: 829#(<= (+ ~x3~0 (* (div ~x4~0 4294967296) 4294967296)) (+ ~x4~0 (* (div ~x3~0 4294967296) 4294967296))), 869#(<= (+ ~x4~0 (* (div ~x3~0 4294967296) 4294967296)) (+ ~x3~0 (* (div ~x4~0 4294967296) 4294967296))), Black: 825#true, 91#L54true, 155#true, Black: 844#(and (= (+ ~x4~0 (* (div ~x3~0 4294967296) 4294967296)) (+ ~x3~0 (* (div ~x4~0 4294967296) 4294967296))) (< (* (div ~x3~0 4294967296) 4294967296) ~x3~0) (= (+ (* (div ~x1~0 4294967296) 4294967296) ~x2~0) (+ ~x1~0 (* (div ~x2~0 4294967296) 4294967296))) (< (* (div ~x1~0 4294967296) 4294967296) ~x1~0)), Black: 845#(and (not (<= ~x1~0 (* (div ~x1~0 4294967296) 4294967296))) (= (+ ~x4~0 (* (div ~x3~0 4294967296) 4294967296)) (+ ~x3~0 (* (div ~x4~0 4294967296) 4294967296))) (<= (+ ~n~0 (* (div ~x2~0 4294967296) 4294967296)) (+ ~x2~0 (* (div ~n~0 4294967296) 4294967296))) (not (<= ~x3~0 (* (div ~x3~0 4294967296) 4294967296))) (= (+ (* (div ~x1~0 4294967296) 4294967296) ~x2~0) (+ ~x1~0 (* (div ~x2~0 4294967296) 4294967296)))), 834#(and (<= (+ ~x3~0 (* (div ~n~0 4294967296) 4294967296) 1) (+ ~n~0 (* (div ~x3~0 4294967296) 4294967296))) (<= (+ ~x3~0 (* (div ~x4~0 4294967296) 4294967296)) (+ ~x4~0 (* (div ~x3~0 4294967296) 4294967296)))), Black: 851#true, Black: 856#(and (<= (+ ~x4~0 (* (div ~n~0 4294967296) 4294967296) 1) (+ ~n~0 (* (div ~x4~0 4294967296) 4294967296))) (not (<= ~x1~0 (* (div ~x1~0 4294967296) 4294967296))) (= (+ ~x4~0 (* (div ~x3~0 4294967296) 4294967296)) (+ ~x3~0 (* (div ~x4~0 4294967296) 4294967296))) (not (<= ~x3~0 (* (div ~x3~0 4294967296) 4294967296))) (= (+ (* (div ~x1~0 4294967296) 4294967296) ~x2~0) (+ ~x1~0 (* (div ~x2~0 4294967296) 4294967296)))), Black: 855#(and (= (+ ~x4~0 (* (div ~x3~0 4294967296) 4294967296)) (+ ~x3~0 (* (div ~x4~0 4294967296) 4294967296))) (< (* (div ~x3~0 4294967296) 4294967296) ~x3~0) (= (+ (* (div ~x1~0 4294967296) 4294967296) ~x2~0) (+ ~x1~0 (* (div ~x2~0 4294967296) 4294967296))) (< (* (div ~x1~0 4294967296) 4294967296) ~x1~0)), Black: 162#(and (= (+ ~x4~0 (* (div ~x3~0 4294967296) 4294967296)) (+ ~x3~0 (* (div ~x4~0 4294967296) 4294967296))) (= (+ (* (div ~x1~0 4294967296) 4294967296) ~x2~0) (+ ~x1~0 (* (div ~x2~0 4294967296) 4294967296)))), Black: 808#(and (= (mod ~x2~0 4294967296) (mod ~x1~0 4294967296)) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (< 0 (mod ~x1~0 4294967296))), Black: 195#(<= (+ ~x2~0 (* (div ~n~0 4294967296) 4294967296) 1) (+ ~n~0 (* (div ~x2~0 4294967296) 4294967296))), Black: 806#(and (< (mod ~x2~0 4294967296) (mod ~n~0 4294967296)) (< 0 (mod ~x2~0 4294967296)) (< ~x2~0 (+ (mod ~x1~0 4294967296) (* (div ~x2~0 4294967296) 4294967296) 1))), Black: 810#(and (= (mod ~x2~0 4294967296) (mod ~x1~0 4294967296)) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (< (mod ~x2~0 4294967296) (mod ~n~0 4294967296)) (< 0 (mod ~x1~0 4294967296))), 179#(<= (+ ~x3~0 (* (div ~x4~0 4294967296) 4294967296)) (+ ~x4~0 (* (div ~x3~0 4294967296) 4294967296))), Black: 804#(and (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (not (<= ~x1~0 (* (div ~x1~0 4294967296) 4294967296))) (= (+ ~x4~0 (* (div ~x3~0 4294967296) 4294967296)) (+ ~x3~0 (* (div ~x4~0 4294967296) 4294967296))) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (not (<= ~x3~0 (* (div ~x3~0 4294967296) 4294967296))) (= (+ (* (div ~x1~0 4294967296) 4294967296) ~x2~0) (+ ~x1~0 (* (div ~x2~0 4294967296) 4294967296))) (<= (+ ~x2~0 (* (div ~n~0 4294967296) 4294967296) 1) (+ ~n~0 (* (div ~x2~0 4294967296) 4294967296)))), Black: 802#(and (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (= (+ ~x4~0 (* (div ~x3~0 4294967296) 4294967296)) (+ ~x3~0 (* (div ~x4~0 4294967296) 4294967296))) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (< (* (div ~x3~0 4294967296) 4294967296) ~x3~0) (= (+ (* (div ~x1~0 4294967296) 4294967296) ~x2~0) (+ ~x1~0 (* (div ~x2~0 4294967296) 4294967296))) (< (* (div ~x1~0 4294967296) 4294967296) ~x1~0)), Black: 814#(and (= (mod ~x2~0 4294967296) (mod ~x1~0 4294967296)) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (< 0 (mod ~x1~0 4294967296))), Black: 388#(and (< (mod ~x2~0 4294967296) (mod ~n~0 4294967296)) (< 0 (mod ~x2~0 4294967296))), Black: 180#(<= (+ ~n~0 (* (div ~x4~0 4294967296) 4294967296)) (+ ~x4~0 (* (div ~n~0 4294967296) 4294967296))), Black: 184#(and (<= (+ ~n~0 (* (div ~x4~0 4294967296) 4294967296)) (+ ~x4~0 (* (div ~n~0 4294967296) 4294967296))) (<= (+ ~x3~0 (* (div ~x4~0 4294967296) 4294967296)) (+ ~x4~0 (* (div ~x3~0 4294967296) 4294967296)))), 857#(<= (+ ~x4~0 (* (div ~n~0 4294967296) 4294967296) 1) (+ ~n~0 (* (div ~x4~0 4294967296) 4294967296))), 55#L81true]) [2022-11-18 20:37:06,627 INFO L383 tUnfolder$Statistics]: this new event has 72 ancestors and is cut-off event [2022-11-18 20:37:06,628 INFO L386 tUnfolder$Statistics]: existing Event has 64 ancestors and is cut-off event [2022-11-18 20:37:06,628 INFO L386 tUnfolder$Statistics]: existing Event has 64 ancestors and is cut-off event [2022-11-18 20:37:06,628 INFO L386 tUnfolder$Statistics]: existing Event has 72 ancestors and is cut-off event [2022-11-18 20:37:09,547 INFO L130 PetriNetUnfolder]: 13130/21980 cut-off events. [2022-11-18 20:37:09,547 INFO L131 PetriNetUnfolder]: For 63017/64060 co-relation queries the response was YES. [2022-11-18 20:37:09,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74958 conditions, 21980 events. 13130/21980 cut-off events. For 63017/64060 co-relation queries the response was YES. Maximal size of possible extension queue 1653. Compared 188344 event pairs, 4826 based on Foata normal form. 164/20930 useless extension candidates. Maximal degree in co-relation 74931. Up to 15223 conditions per place. [2022-11-18 20:37:09,737 INFO L137 encePairwiseOnDemand]: 137/149 looper letters, 115 selfloop transitions, 21 changer transitions 2/227 dead transitions. [2022-11-18 20:37:09,738 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 227 transitions, 1479 flow [2022-11-18 20:37:09,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:37:09,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:37:09,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 763 transitions. [2022-11-18 20:37:09,741 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7315436241610739 [2022-11-18 20:37:09,741 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 763 transitions. [2022-11-18 20:37:09,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 763 transitions. [2022-11-18 20:37:09,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:37:09,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 763 transitions. [2022-11-18 20:37:09,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.0) internal successors, (763), 7 states have internal predecessors, (763), 0 states have call successors, (0), 0 states 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 20:37:09,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states 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 20:37:09,748 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states 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 20:37:09,748 INFO L175 Difference]: Start difference. First operand has 175 places, 170 transitions, 905 flow. Second operand 7 states and 763 transitions. [2022-11-18 20:37:09,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 227 transitions, 1479 flow [2022-11-18 20:37:09,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 227 transitions, 1475 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:37:09,912 INFO L231 Difference]: Finished difference. Result has 182 places, 172 transitions, 967 flow [2022-11-18 20:37:09,913 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=838, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=967, PETRI_PLACES=182, PETRI_TRANSITIONS=172} [2022-11-18 20:37:09,913 INFO L288 CegarLoopForPetriNet]: 135 programPoint places, 47 predicate places. [2022-11-18 20:37:09,914 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 172 transitions, 967 flow [2022-11-18 20:37:09,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 101.66666666666667) internal successors, (610), 6 states have internal predecessors, (610), 0 states have call successors, (0), 0 states 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 20:37:09,914 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:37:09,915 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] [2022-11-18 20:37:09,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:37:09,915 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:37:09,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:37:09,916 INFO L85 PathProgramCache]: Analyzing trace with hash -458456338, now seen corresponding path program 2 times [2022-11-18 20:37:09,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:37:09,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524531241] [2022-11-18 20:37:09,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:37:09,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:37:09,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:10,349 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 20:37:10,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:37:10,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524531241] [2022-11-18 20:37:10,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524531241] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:37:10,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820989545] [2022-11-18 20:37:10,350 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:37:10,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:37:10,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08738cf-a817-4a9c-916f-d87b0727fe48/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:37:10,354 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08738cf-a817-4a9c-916f-d87b0727fe48/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:37:10,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08738cf-a817-4a9c-916f-d87b0727fe48/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:37:10,521 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:37:10,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:37:10,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:37:10,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:37:10,955 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 20:37:10,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:37:11,260 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 20:37:11,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820989545] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:37:11,260 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:37:11,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2022-11-18 20:37:11,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582135042] [2022-11-18 20:37:11,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:37:11,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 20:37:11,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:37:11,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 20:37:11,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:37:11,264 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 149 [2022-11-18 20:37:11,266 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 172 transitions, 967 flow. Second operand has 14 states, 14 states have (on average 82.71428571428571) internal successors, (1158), 14 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states 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 20:37:11,266 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:37:11,267 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 149 [2022-11-18 20:37:11,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand