./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/12_fmaxsymopt_cas.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_3531b0f6-b659-4bfd-8ed2-1a01056ba3e3/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3531b0f6-b659-4bfd-8ed2-1a01056ba3e3/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3531b0f6-b659-4bfd-8ed2-1a01056ba3e3/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3531b0f6-b659-4bfd-8ed2-1a01056ba3e3/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/12_fmaxsymopt_cas.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3531b0f6-b659-4bfd-8ed2-1a01056ba3e3/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3531b0f6-b659-4bfd-8ed2-1a01056ba3e3/bin/uautomizer-Dbtcem3rbc --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 7a0803bc25bdee4cec741e6286f7294c3704d91bb65e5684830693d517eafafb --- 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-5e519f3 [2022-11-02 20:49:57,709 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:49:57,712 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:49:57,775 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:49:57,776 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:49:57,781 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:49:57,784 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:49:57,789 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:49:57,792 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:49:57,798 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:49:57,799 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:49:57,803 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:49:57,803 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:49:57,806 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:49:57,808 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:49:57,811 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:49:57,813 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:49:57,814 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:49:57,816 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:49:57,827 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:49:57,829 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:49:57,831 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:49:57,835 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:49:57,836 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:49:57,847 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:49:57,848 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:49:57,849 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:49:57,851 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:49:57,852 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:49:57,853 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:49:57,853 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:49:57,855 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:49:57,857 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:49:57,858 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:49:57,860 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:49:57,860 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:49:57,861 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:49:57,861 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:49:57,862 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:49:57,863 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:49:57,864 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:49:57,866 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3531b0f6-b659-4bfd-8ed2-1a01056ba3e3/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:49:57,915 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:49:57,915 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:49:57,916 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:49:57,916 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:49:57,917 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:49:57,918 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:49:57,919 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:49:57,919 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:49:57,919 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:49:57,919 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:49:57,921 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:49:57,921 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:49:57,921 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:49:57,922 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:49:57,922 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:49:57,922 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:49:57,922 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:49:57,923 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:49:57,923 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:49:57,923 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:49:57,923 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:49:57,924 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:49:57,924 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:49:57,924 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:49:57,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:49:57,925 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:49:57,925 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:49:57,925 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:49:57,926 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:49:57,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:49:57,926 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:49:57,926 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:49:57,927 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:49:57,927 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_3531b0f6-b659-4bfd-8ed2-1a01056ba3e3/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3531b0f6-b659-4bfd-8ed2-1a01056ba3e3/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a0803bc25bdee4cec741e6286f7294c3704d91bb65e5684830693d517eafafb [2022-11-02 20:49:58,283 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:49:58,307 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:49:58,310 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:49:58,311 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:49:58,312 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:49:58,314 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3531b0f6-b659-4bfd-8ed2-1a01056ba3e3/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread-ext/12_fmaxsymopt_cas.i [2022-11-02 20:49:58,413 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3531b0f6-b659-4bfd-8ed2-1a01056ba3e3/bin/uautomizer-Dbtcem3rbc/data/b5533b8a6/f5d3b3822c9949c1987faea1ead466f7/FLAG3396769b3 [2022-11-02 20:49:59,127 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:49:59,132 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3531b0f6-b659-4bfd-8ed2-1a01056ba3e3/sv-benchmarks/c/pthread-ext/12_fmaxsymopt_cas.i [2022-11-02 20:49:59,150 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3531b0f6-b659-4bfd-8ed2-1a01056ba3e3/bin/uautomizer-Dbtcem3rbc/data/b5533b8a6/f5d3b3822c9949c1987faea1ead466f7/FLAG3396769b3 [2022-11-02 20:49:59,340 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3531b0f6-b659-4bfd-8ed2-1a01056ba3e3/bin/uautomizer-Dbtcem3rbc/data/b5533b8a6/f5d3b3822c9949c1987faea1ead466f7 [2022-11-02 20:49:59,345 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:49:59,348 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:49:59,352 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:49:59,352 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:49:59,356 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:49:59,357 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:49:59" (1/1) ... [2022-11-02 20:49:59,360 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5576c572 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:49:59, skipping insertion in model container [2022-11-02 20:49:59,360 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:49:59" (1/1) ... [2022-11-02 20:49:59,369 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:49:59,440 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:49:59,959 WARN L230 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_3531b0f6-b659-4bfd-8ed2-1a01056ba3e3/sv-benchmarks/c/pthread-ext/12_fmaxsymopt_cas.i[30582,30595] [2022-11-02 20:49:59,977 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:49:59,988 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:50:00,067 WARN L230 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_3531b0f6-b659-4bfd-8ed2-1a01056ba3e3/sv-benchmarks/c/pthread-ext/12_fmaxsymopt_cas.i[30582,30595] [2022-11-02 20:50:00,076 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:50:00,128 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:50:00,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:00 WrapperNode [2022-11-02 20:50:00,129 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:50:00,131 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:50:00,131 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:50:00,131 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:50:00,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:00" (1/1) ... [2022-11-02 20:50:00,154 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:00" (1/1) ... [2022-11-02 20:50:00,180 INFO L138 Inliner]: procedures = 170, calls = 32, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 101 [2022-11-02 20:50:00,180 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:50:00,181 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:50:00,181 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:50:00,181 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:50:00,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:00" (1/1) ... [2022-11-02 20:50:00,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:00" (1/1) ... [2022-11-02 20:50:00,202 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:00" (1/1) ... [2022-11-02 20:50:00,204 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:00" (1/1) ... [2022-11-02 20:50:00,212 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:00" (1/1) ... [2022-11-02 20:50:00,229 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:00" (1/1) ... [2022-11-02 20:50:00,234 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:00" (1/1) ... [2022-11-02 20:50:00,241 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:00" (1/1) ... [2022-11-02 20:50:00,244 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:50:00,245 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:50:00,245 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:50:00,246 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:50:00,255 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:00" (1/1) ... [2022-11-02 20:50:00,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:50:00,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3531b0f6-b659-4bfd-8ed2-1a01056ba3e3/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:50:00,295 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3531b0f6-b659-4bfd-8ed2-1a01056ba3e3/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:50:00,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3531b0f6-b659-4bfd-8ed2-1a01056ba3e3/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:50:00,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:50:00,353 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-02 20:50:00,354 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-02 20:50:00,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:50:00,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:50:00,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:50:00,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:50:00,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:50:00,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:50:00,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:50:00,357 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:50:00,547 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:50:00,563 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:50:00,888 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:50:01,020 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:50:01,021 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-02 20:50:01,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:50:01 BoogieIcfgContainer [2022-11-02 20:50:01,032 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:50:01,036 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:50:01,036 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:50:01,040 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:50:01,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:49:59" (1/3) ... [2022-11-02 20:50:01,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63580ad8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:50:01, skipping insertion in model container [2022-11-02 20:50:01,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:00" (2/3) ... [2022-11-02 20:50:01,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63580ad8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:50:01, skipping insertion in model container [2022-11-02 20:50:01,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:50:01" (3/3) ... [2022-11-02 20:50:01,045 INFO L112 eAbstractionObserver]: Analyzing ICFG 12_fmaxsymopt_cas.i [2022-11-02 20:50:01,057 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:50:01,070 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:50:01,070 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:50:01,071 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:50:01,227 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:50:01,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 102 transitions, 209 flow [2022-11-02 20:50:01,374 INFO L130 PetriNetUnfolder]: 12/113 cut-off events. [2022-11-02 20:50:01,375 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:50:01,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 113 events. 12/113 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 145 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 76. Up to 4 conditions per place. [2022-11-02 20:50:01,381 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 102 transitions, 209 flow [2022-11-02 20:50:01,388 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 102 transitions, 209 flow [2022-11-02 20:50:01,401 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:50:01,410 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;@8830f23, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:50:01,411 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-02 20:50:01,433 INFO L130 PetriNetUnfolder]: 2/53 cut-off events. [2022-11-02 20:50:01,433 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:50:01,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:50:01,434 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:50:01,435 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:50:01,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:01,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1635953085, now seen corresponding path program 1 times [2022-11-02 20:50:01,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:01,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894850665] [2022-11-02 20:50:01,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:01,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:01,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:50:01,618 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:50:01,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:50:01,719 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:50:01,721 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:50:01,724 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2022-11-02 20:50:01,726 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-11-02 20:50:01,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-11-02 20:50:01,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:50:01,728 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-02 20:50:01,745 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:50:01,746 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-02 20:50:01,800 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:50:01,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 166 transitions, 344 flow [2022-11-02 20:50:01,897 INFO L130 PetriNetUnfolder]: 23/190 cut-off events. [2022-11-02 20:50:01,898 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 20:50:01,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 190 events. 23/190 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 410 event pairs, 0 based on Foata normal form. 0/162 useless extension candidates. Maximal degree in co-relation 139. Up to 6 conditions per place. [2022-11-02 20:50:01,902 INFO L82 GeneralOperation]: Start removeDead. Operand has 150 places, 166 transitions, 344 flow [2022-11-02 20:50:01,906 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 150 places, 166 transitions, 344 flow [2022-11-02 20:50:01,908 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:50:01,909 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;@8830f23, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:50:01,910 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-02 20:50:01,929 INFO L130 PetriNetUnfolder]: 4/84 cut-off events. [2022-11-02 20:50:01,929 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 20:50:01,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:50:01,930 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:50:01,930 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-02 20:50:01,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:01,931 INFO L85 PathProgramCache]: Analyzing trace with hash -32075274, now seen corresponding path program 1 times [2022-11-02 20:50:01,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:01,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627780210] [2022-11-02 20:50:01,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:01,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:01,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:50:01,967 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:50:01,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:50:02,000 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:50:02,001 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:50:02,001 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2022-11-02 20:50:02,001 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-11-02 20:50:02,002 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2022-11-02 20:50:02,002 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-11-02 20:50:02,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:50:02,003 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-02 20:50:02,004 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:50:02,004 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-02 20:50:02,067 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:50:02,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 230 transitions, 481 flow [2022-11-02 20:50:02,167 INFO L130 PetriNetUnfolder]: 34/267 cut-off events. [2022-11-02 20:50:02,171 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-02 20:50:02,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283 conditions, 267 events. 34/267 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 746 event pairs, 0 based on Foata normal form. 0/226 useless extension candidates. Maximal degree in co-relation 202. Up to 8 conditions per place. [2022-11-02 20:50:02,181 INFO L82 GeneralOperation]: Start removeDead. Operand has 206 places, 230 transitions, 481 flow [2022-11-02 20:50:02,190 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 206 places, 230 transitions, 481 flow [2022-11-02 20:50:02,195 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:50:02,202 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;@8830f23, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:50:02,203 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-02 20:50:02,237 INFO L130 PetriNetUnfolder]: 7/119 cut-off events. [2022-11-02 20:50:02,237 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-02 20:50:02,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:50:02,238 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:50:02,238 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-02 20:50:02,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:02,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1459620510, now seen corresponding path program 1 times [2022-11-02 20:50:02,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:02,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628711361] [2022-11-02 20:50:02,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:02,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:02,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:50:02,280 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:50:02,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:50:02,313 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:50:02,314 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:50:02,314 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-11-02 20:50:02,314 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-11-02 20:50:02,315 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2022-11-02 20:50:02,315 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-11-02 20:50:02,315 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-11-02 20:50:02,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:50:02,316 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-02 20:50:02,317 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:50:02,317 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-02 20:50:02,393 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:50:02,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 262 places, 294 transitions, 620 flow [2022-11-02 20:50:02,521 INFO L130 PetriNetUnfolder]: 45/344 cut-off events. [2022-11-02 20:50:02,522 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-02 20:50:02,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 367 conditions, 344 events. 45/344 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1124 event pairs, 0 based on Foata normal form. 0/290 useless extension candidates. Maximal degree in co-relation 275. Up to 10 conditions per place. [2022-11-02 20:50:02,532 INFO L82 GeneralOperation]: Start removeDead. Operand has 262 places, 294 transitions, 620 flow [2022-11-02 20:50:02,539 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 262 places, 294 transitions, 620 flow [2022-11-02 20:50:02,548 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:50:02,551 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;@8830f23, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:50:02,553 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-02 20:50:02,594 INFO L130 PetriNetUnfolder]: 14/171 cut-off events. [2022-11-02 20:50:02,594 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-11-02 20:50:02,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:50:02,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:50:02,595 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-02 20:50:02,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:02,596 INFO L85 PathProgramCache]: Analyzing trace with hash 659530808, now seen corresponding path program 1 times [2022-11-02 20:50:02,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:02,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470414133] [2022-11-02 20:50:02,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:02,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:02,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:02,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:02,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:50:02,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470414133] [2022-11-02 20:50:02,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470414133] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:02,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:02,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:50:02,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169202401] [2022-11-02 20:50:02,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:02,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:50:02,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:50:02,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:50:02,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:50:02,829 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 294 [2022-11-02 20:50:02,834 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 294 transitions, 620 flow. Second operand has 2 states, 2 states have (on average 261.5) internal successors, (523), 2 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:02,834 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:50:02,834 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 294 [2022-11-02 20:50:02,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:50:03,333 INFO L130 PetriNetUnfolder]: 109/1030 cut-off events. [2022-11-02 20:50:03,334 INFO L131 PetriNetUnfolder]: For 159/159 co-relation queries the response was YES. [2022-11-02 20:50:03,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1196 conditions, 1030 events. 109/1030 cut-off events. For 159/159 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 5912 event pairs, 34 based on Foata normal form. 188/1102 useless extension candidates. Maximal degree in co-relation 539. Up to 65 conditions per place. [2022-11-02 20:50:03,366 INFO L137 encePairwiseOnDemand]: 272/294 looper letters, 8 selfloop transitions, 0 changer transitions 0/263 dead transitions. [2022-11-02 20:50:03,366 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 263 transitions, 574 flow [2022-11-02 20:50:03,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:50:03,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 20:50:03,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 550 transitions. [2022-11-02 20:50:03,394 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.935374149659864 [2022-11-02 20:50:03,395 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 550 transitions. [2022-11-02 20:50:03,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 550 transitions. [2022-11-02 20:50:03,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:50:03,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 550 transitions. [2022-11-02 20:50:03,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 275.0) internal successors, (550), 2 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:03,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 294.0) internal successors, (882), 3 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:03,422 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 294.0) internal successors, (882), 3 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:03,425 INFO L175 Difference]: Start difference. First operand has 262 places, 294 transitions, 620 flow. Second operand 2 states and 550 transitions. [2022-11-02 20:50:03,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 263 transitions, 574 flow [2022-11-02 20:50:03,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 263 transitions, 562 flow, removed 6 selfloop flow, removed 0 redundant places. [2022-11-02 20:50:03,453 INFO L231 Difference]: Finished difference. Result has 253 places, 263 transitions, 546 flow [2022-11-02 20:50:03,455 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=294, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=546, PETRI_PLACES=253, PETRI_TRANSITIONS=263} [2022-11-02 20:50:03,462 INFO L287 CegarLoopForPetriNet]: 262 programPoint places, -9 predicate places. [2022-11-02 20:50:03,462 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 263 transitions, 546 flow [2022-11-02 20:50:03,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 261.5) internal successors, (523), 2 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:03,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:50:03,464 INFO L208 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] [2022-11-02 20:50:03,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:50:03,464 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-02 20:50:03,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:03,466 INFO L85 PathProgramCache]: Analyzing trace with hash 833454973, now seen corresponding path program 1 times [2022-11-02 20:50:03,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:03,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807721974] [2022-11-02 20:50:03,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:03,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:03,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:03,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:03,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:50:03,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807721974] [2022-11-02 20:50:03,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807721974] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:03,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:03,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:50:03,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471720671] [2022-11-02 20:50:03,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:03,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:50:03,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:50:03,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:50:03,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:50:03,599 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 294 [2022-11-02 20:50:03,601 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 263 transitions, 546 flow. Second operand has 3 states, 3 states have (on average 249.33333333333334) internal successors, (748), 3 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:03,601 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:50:03,601 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 294 [2022-11-02 20:50:03,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:50:05,035 INFO L130 PetriNetUnfolder]: 687/3642 cut-off events. [2022-11-02 20:50:05,035 INFO L131 PetriNetUnfolder]: For 379/379 co-relation queries the response was YES. [2022-11-02 20:50:05,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4781 conditions, 3642 events. 687/3642 cut-off events. For 379/379 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 32386 event pairs, 250 based on Foata normal form. 0/3113 useless extension candidates. Maximal degree in co-relation 4774. Up to 439 conditions per place. [2022-11-02 20:50:05,149 INFO L137 encePairwiseOnDemand]: 290/294 looper letters, 29 selfloop transitions, 3 changer transitions 0/274 dead transitions. [2022-11-02 20:50:05,149 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 274 transitions, 647 flow [2022-11-02 20:50:05,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:50:05,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:50:05,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 774 transitions. [2022-11-02 20:50:05,153 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8775510204081632 [2022-11-02 20:50:05,153 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 774 transitions. [2022-11-02 20:50:05,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 774 transitions. [2022-11-02 20:50:05,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:50:05,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 774 transitions. [2022-11-02 20:50:05,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 258.0) internal successors, (774), 3 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:05,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 294.0) internal successors, (1176), 4 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:05,162 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 294.0) internal successors, (1176), 4 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:05,162 INFO L175 Difference]: Start difference. First operand has 253 places, 263 transitions, 546 flow. Second operand 3 states and 774 transitions. [2022-11-02 20:50:05,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 274 transitions, 647 flow [2022-11-02 20:50:05,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 274 transitions, 647 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:50:05,173 INFO L231 Difference]: Finished difference. Result has 256 places, 263 transitions, 557 flow [2022-11-02 20:50:05,174 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=294, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=557, PETRI_PLACES=256, PETRI_TRANSITIONS=263} [2022-11-02 20:50:05,175 INFO L287 CegarLoopForPetriNet]: 262 programPoint places, -6 predicate places. [2022-11-02 20:50:05,175 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 263 transitions, 557 flow [2022-11-02 20:50:05,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 249.33333333333334) internal successors, (748), 3 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:05,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:50:05,177 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:50:05,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:50:05,178 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-02 20:50:05,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:05,179 INFO L85 PathProgramCache]: Analyzing trace with hash 908884319, now seen corresponding path program 1 times [2022-11-02 20:50:05,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:05,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478424617] [2022-11-02 20:50:05,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:05,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:05,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:50:05,219 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:50:05,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:50:05,266 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:50:05,267 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:50:05,267 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2022-11-02 20:50:05,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-11-02 20:50:05,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2022-11-02 20:50:05,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2022-11-02 20:50:05,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-11-02 20:50:05,272 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-11-02 20:50:05,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:50:05,272 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-02 20:50:05,273 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:50:05,274 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-11-02 20:50:05,406 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:50:05,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 318 places, 358 transitions, 761 flow [2022-11-02 20:50:05,541 INFO L130 PetriNetUnfolder]: 56/421 cut-off events. [2022-11-02 20:50:05,541 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-11-02 20:50:05,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 452 conditions, 421 events. 56/421 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1515 event pairs, 0 based on Foata normal form. 0/354 useless extension candidates. Maximal degree in co-relation 357. Up to 12 conditions per place. [2022-11-02 20:50:05,557 INFO L82 GeneralOperation]: Start removeDead. Operand has 318 places, 358 transitions, 761 flow [2022-11-02 20:50:05,607 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 318 places, 358 transitions, 761 flow [2022-11-02 20:50:05,609 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:50:05,610 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;@8830f23, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:50:05,610 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-02 20:50:05,640 INFO L130 PetriNetUnfolder]: 13/167 cut-off events. [2022-11-02 20:50:05,640 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-11-02 20:50:05,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:50:05,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:50:05,641 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-02 20:50:05,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:05,642 INFO L85 PathProgramCache]: Analyzing trace with hash -493230308, now seen corresponding path program 1 times [2022-11-02 20:50:05,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:05,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172824972] [2022-11-02 20:50:05,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:05,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:05,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:05,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:05,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:50:05,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172824972] [2022-11-02 20:50:05,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172824972] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:05,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:05,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:50:05,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987552631] [2022-11-02 20:50:05,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:05,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:50:05,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:50:05,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:50:05,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:50:05,744 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 358 [2022-11-02 20:50:05,746 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 358 transitions, 761 flow. Second operand has 2 states, 2 states have (on average 317.0) internal successors, (634), 2 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:05,746 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:50:05,746 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 358 [2022-11-02 20:50:05,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:50:06,623 INFO L130 PetriNetUnfolder]: 253/2126 cut-off events. [2022-11-02 20:50:06,624 INFO L131 PetriNetUnfolder]: For 511/511 co-relation queries the response was YES. [2022-11-02 20:50:06,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2533 conditions, 2126 events. 253/2126 cut-off events. For 511/511 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 15443 event pairs, 98 based on Foata normal form. 492/2376 useless extension candidates. Maximal degree in co-relation 1191. Up to 161 conditions per place. [2022-11-02 20:50:06,698 INFO L137 encePairwiseOnDemand]: 331/358 looper letters, 10 selfloop transitions, 0 changer transitions 0/321 dead transitions. [2022-11-02 20:50:06,699 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 321 transitions, 707 flow [2022-11-02 20:50:06,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:50:06,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 20:50:06,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 669 transitions. [2022-11-02 20:50:06,702 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9343575418994413 [2022-11-02 20:50:06,702 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 669 transitions. [2022-11-02 20:50:06,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 669 transitions. [2022-11-02 20:50:06,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:50:06,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 669 transitions. [2022-11-02 20:50:06,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 334.5) internal successors, (669), 2 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:06,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 358.0) internal successors, (1074), 3 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:06,708 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 358.0) internal successors, (1074), 3 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:06,710 INFO L175 Difference]: Start difference. First operand has 318 places, 358 transitions, 761 flow. Second operand 2 states and 669 transitions. [2022-11-02 20:50:06,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 321 transitions, 707 flow [2022-11-02 20:50:06,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 321 transitions, 687 flow, removed 10 selfloop flow, removed 0 redundant places. [2022-11-02 20:50:06,722 INFO L231 Difference]: Finished difference. Result has 308 places, 321 transitions, 667 flow [2022-11-02 20:50:06,723 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=667, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=667, PETRI_PLACES=308, PETRI_TRANSITIONS=321} [2022-11-02 20:50:06,726 INFO L287 CegarLoopForPetriNet]: 318 programPoint places, -10 predicate places. [2022-11-02 20:50:06,726 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 321 transitions, 667 flow [2022-11-02 20:50:06,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 317.0) internal successors, (634), 2 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:06,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:50:06,727 INFO L208 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] [2022-11-02 20:50:06,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:50:06,728 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-02 20:50:06,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:06,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1429904641, now seen corresponding path program 1 times [2022-11-02 20:50:06,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:06,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922084979] [2022-11-02 20:50:06,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:06,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:06,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:06,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:06,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:50:06,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922084979] [2022-11-02 20:50:06,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922084979] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:06,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:06,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:50:06,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132406666] [2022-11-02 20:50:06,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:06,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:50:06,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:50:06,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:50:06,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:50:06,854 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 358 [2022-11-02 20:50:06,857 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 321 transitions, 667 flow. Second operand has 3 states, 3 states have (on average 305.3333333333333) internal successors, (916), 3 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:06,857 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:50:06,857 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 358 [2022-11-02 20:50:06,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:50:10,752 INFO L130 PetriNetUnfolder]: 1833/9586 cut-off events. [2022-11-02 20:50:10,752 INFO L131 PetriNetUnfolder]: For 811/811 co-relation queries the response was YES. [2022-11-02 20:50:10,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12242 conditions, 9586 events. 1833/9586 cut-off events. For 811/811 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 104519 event pairs, 674 based on Foata normal form. 0/8263 useless extension candidates. Maximal degree in co-relation 12234. Up to 1071 conditions per place. [2022-11-02 20:50:11,113 INFO L137 encePairwiseOnDemand]: 354/358 looper letters, 33 selfloop transitions, 3 changer transitions 0/334 dead transitions. [2022-11-02 20:50:11,113 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 334 transitions, 785 flow [2022-11-02 20:50:11,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:50:11,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:50:11,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 946 transitions. [2022-11-02 20:50:11,118 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8808193668528864 [2022-11-02 20:50:11,118 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 946 transitions. [2022-11-02 20:50:11,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 946 transitions. [2022-11-02 20:50:11,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:50:11,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 946 transitions. [2022-11-02 20:50:11,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 315.3333333333333) internal successors, (946), 3 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:11,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:11,128 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:11,128 INFO L175 Difference]: Start difference. First operand has 308 places, 321 transitions, 667 flow. Second operand 3 states and 946 transitions. [2022-11-02 20:50:11,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 334 transitions, 785 flow [2022-11-02 20:50:11,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 334 transitions, 785 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:50:11,139 INFO L231 Difference]: Finished difference. Result has 311 places, 321 transitions, 678 flow [2022-11-02 20:50:11,140 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=665, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=678, PETRI_PLACES=311, PETRI_TRANSITIONS=321} [2022-11-02 20:50:11,141 INFO L287 CegarLoopForPetriNet]: 318 programPoint places, -7 predicate places. [2022-11-02 20:50:11,141 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 321 transitions, 678 flow [2022-11-02 20:50:11,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 305.3333333333333) internal successors, (916), 3 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:11,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:50:11,143 INFO L208 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] [2022-11-02 20:50:11,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:50:11,143 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-02 20:50:11,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:11,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1487906071, now seen corresponding path program 1 times [2022-11-02 20:50:11,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:11,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594142201] [2022-11-02 20:50:11,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:11,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:11,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:11,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:11,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:50:11,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594142201] [2022-11-02 20:50:11,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594142201] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:11,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:11,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:50:11,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540928759] [2022-11-02 20:50:11,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:11,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:50:11,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:50:11,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:50:11,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:50:11,283 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 358 [2022-11-02 20:50:11,285 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 321 transitions, 678 flow. Second operand has 3 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:11,286 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:50:11,286 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 358 [2022-11-02 20:50:11,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:50:13,765 INFO L130 PetriNetUnfolder]: 1379/7043 cut-off events. [2022-11-02 20:50:13,765 INFO L131 PetriNetUnfolder]: For 755/755 co-relation queries the response was YES. [2022-11-02 20:50:13,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9285 conditions, 7043 events. 1379/7043 cut-off events. For 755/755 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 72148 event pairs, 610 based on Foata normal form. 0/6177 useless extension candidates. Maximal degree in co-relation 9275. Up to 952 conditions per place. [2022-11-02 20:50:13,968 INFO L137 encePairwiseOnDemand]: 355/358 looper letters, 29 selfloop transitions, 2 changer transitions 0/333 dead transitions. [2022-11-02 20:50:13,969 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 333 transitions, 784 flow [2022-11-02 20:50:13,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:50:13,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:50:13,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 953 transitions. [2022-11-02 20:50:13,973 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8873370577281192 [2022-11-02 20:50:13,974 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 953 transitions. [2022-11-02 20:50:13,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 953 transitions. [2022-11-02 20:50:13,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:50:13,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 953 transitions. [2022-11-02 20:50:13,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:13,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:13,983 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:13,984 INFO L175 Difference]: Start difference. First operand has 311 places, 321 transitions, 678 flow. Second operand 3 states and 953 transitions. [2022-11-02 20:50:13,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 333 transitions, 784 flow [2022-11-02 20:50:13,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 333 transitions, 781 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:50:13,996 INFO L231 Difference]: Finished difference. Result has 313 places, 322 transitions, 687 flow [2022-11-02 20:50:13,997 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=675, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=687, PETRI_PLACES=313, PETRI_TRANSITIONS=322} [2022-11-02 20:50:13,998 INFO L287 CegarLoopForPetriNet]: 318 programPoint places, -5 predicate places. [2022-11-02 20:50:13,998 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 322 transitions, 687 flow [2022-11-02 20:50:13,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:14,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:50:14,000 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:50:14,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:50:14,001 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-02 20:50:14,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:14,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1969543966, now seen corresponding path program 1 times [2022-11-02 20:50:14,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:14,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364971113] [2022-11-02 20:50:14,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:14,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:14,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:14,114 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:50:14,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:50:14,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364971113] [2022-11-02 20:50:14,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364971113] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:14,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:14,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:50:14,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742567010] [2022-11-02 20:50:14,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:14,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:50:14,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:50:14,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:50:14,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:50:14,119 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 358 [2022-11-02 20:50:14,122 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 322 transitions, 687 flow. Second operand has 3 states, 3 states have (on average 305.6666666666667) internal successors, (917), 3 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:14,123 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:50:14,123 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 358 [2022-11-02 20:50:14,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:50:17,372 INFO L130 PetriNetUnfolder]: 1847/9295 cut-off events. [2022-11-02 20:50:17,373 INFO L131 PetriNetUnfolder]: For 764/764 co-relation queries the response was YES. [2022-11-02 20:50:17,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11988 conditions, 9295 events. 1847/9295 cut-off events. For 764/764 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 98931 event pairs, 755 based on Foata normal form. 0/8015 useless extension candidates. Maximal degree in co-relation 11977. Up to 1044 conditions per place. [2022-11-02 20:50:17,638 INFO L137 encePairwiseOnDemand]: 354/358 looper letters, 32 selfloop transitions, 3 changer transitions 0/334 dead transitions. [2022-11-02 20:50:17,638 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 334 transitions, 796 flow [2022-11-02 20:50:17,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:50:17,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:50:17,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 945 transitions. [2022-11-02 20:50:17,642 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8798882681564246 [2022-11-02 20:50:17,642 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 945 transitions. [2022-11-02 20:50:17,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 945 transitions. [2022-11-02 20:50:17,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:50:17,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 945 transitions. [2022-11-02 20:50:17,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 315.0) internal successors, (945), 3 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:17,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:17,650 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:17,651 INFO L175 Difference]: Start difference. First operand has 313 places, 322 transitions, 687 flow. Second operand 3 states and 945 transitions. [2022-11-02 20:50:17,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 334 transitions, 796 flow [2022-11-02 20:50:17,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 334 transitions, 794 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:50:17,659 INFO L231 Difference]: Finished difference. Result has 315 places, 322 transitions, 696 flow [2022-11-02 20:50:17,660 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=696, PETRI_PLACES=315, PETRI_TRANSITIONS=322} [2022-11-02 20:50:17,661 INFO L287 CegarLoopForPetriNet]: 318 programPoint places, -3 predicate places. [2022-11-02 20:50:17,661 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 322 transitions, 696 flow [2022-11-02 20:50:17,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 305.6666666666667) internal successors, (917), 3 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:17,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:50:17,663 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:50:17,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:50:17,663 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-02 20:50:17,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:17,664 INFO L85 PathProgramCache]: Analyzing trace with hash -2049506815, now seen corresponding path program 1 times [2022-11-02 20:50:17,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:17,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448662727] [2022-11-02 20:50:17,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:17,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:17,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:50:17,699 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:50:17,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:50:17,743 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:50:17,747 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:50:17,747 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2022-11-02 20:50:17,747 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-11-02 20:50:17,748 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2022-11-02 20:50:17,749 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2022-11-02 20:50:17,749 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2022-11-02 20:50:17,749 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2022-11-02 20:50:17,749 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-11-02 20:50:17,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 20:50:17,750 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-02 20:50:17,752 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:50:17,752 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2022-11-02 20:50:17,847 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:50:17,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 374 places, 422 transitions, 904 flow [2022-11-02 20:50:17,992 INFO L130 PetriNetUnfolder]: 67/498 cut-off events. [2022-11-02 20:50:17,993 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2022-11-02 20:50:18,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 538 conditions, 498 events. 67/498 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1907 event pairs, 0 based on Foata normal form. 0/418 useless extension candidates. Maximal degree in co-relation 440. Up to 14 conditions per place. [2022-11-02 20:50:18,012 INFO L82 GeneralOperation]: Start removeDead. Operand has 374 places, 422 transitions, 904 flow [2022-11-02 20:50:18,023 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 374 places, 422 transitions, 904 flow [2022-11-02 20:50:18,028 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:50:18,035 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;@8830f23, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:50:18,035 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-02 20:50:18,057 INFO L130 PetriNetUnfolder]: 14/173 cut-off events. [2022-11-02 20:50:18,057 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-11-02 20:50:18,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:50:18,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:50:18,058 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-02 20:50:18,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:18,058 INFO L85 PathProgramCache]: Analyzing trace with hash 532244354, now seen corresponding path program 1 times [2022-11-02 20:50:18,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:18,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570524381] [2022-11-02 20:50:18,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:18,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:18,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:18,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:18,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:50:18,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570524381] [2022-11-02 20:50:18,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570524381] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:18,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:18,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:50:18,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264638280] [2022-11-02 20:50:18,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:18,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:50:18,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:50:18,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:50:18,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:50:18,105 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 372 out of 422 [2022-11-02 20:50:18,106 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 422 transitions, 904 flow. Second operand has 2 states, 2 states have (on average 373.0) internal successors, (746), 2 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:18,106 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:50:18,106 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 372 of 422 [2022-11-02 20:50:18,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:50:19,811 INFO L130 PetriNetUnfolder]: 573/4350 cut-off events. [2022-11-02 20:50:19,812 INFO L131 PetriNetUnfolder]: For 1503/1503 co-relation queries the response was YES. [2022-11-02 20:50:19,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5318 conditions, 4350 events. 573/4350 cut-off events. For 1503/1503 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 38173 event pairs, 258 based on Foata normal form. 1228/5084 useless extension candidates. Maximal degree in co-relation 2551. Up to 385 conditions per place. [2022-11-02 20:50:19,983 INFO L137 encePairwiseOnDemand]: 390/422 looper letters, 12 selfloop transitions, 0 changer transitions 0/379 dead transitions. [2022-11-02 20:50:19,983 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 379 transitions, 842 flow [2022-11-02 20:50:19,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:50:19,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 20:50:19,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 788 transitions. [2022-11-02 20:50:19,990 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.933649289099526 [2022-11-02 20:50:19,991 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 788 transitions. [2022-11-02 20:50:19,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 788 transitions. [2022-11-02 20:50:19,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:50:19,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 788 transitions. [2022-11-02 20:50:19,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 394.0) internal successors, (788), 2 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:20,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 422.0) internal successors, (1266), 3 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:20,009 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 422.0) internal successors, (1266), 3 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:20,009 INFO L175 Difference]: Start difference. First operand has 374 places, 422 transitions, 904 flow. Second operand 2 states and 788 transitions. [2022-11-02 20:50:20,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 379 transitions, 842 flow [2022-11-02 20:50:20,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 379 transitions, 812 flow, removed 15 selfloop flow, removed 0 redundant places. [2022-11-02 20:50:20,023 INFO L231 Difference]: Finished difference. Result has 363 places, 379 transitions, 788 flow [2022-11-02 20:50:20,024 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=788, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=788, PETRI_PLACES=363, PETRI_TRANSITIONS=379} [2022-11-02 20:50:20,025 INFO L287 CegarLoopForPetriNet]: 374 programPoint places, -11 predicate places. [2022-11-02 20:50:20,026 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 379 transitions, 788 flow [2022-11-02 20:50:20,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 373.0) internal successors, (746), 2 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:20,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:50:20,027 INFO L208 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] [2022-11-02 20:50:20,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 20:50:20,027 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-02 20:50:20,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:20,028 INFO L85 PathProgramCache]: Analyzing trace with hash 266410080, now seen corresponding path program 1 times [2022-11-02 20:50:20,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:20,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161761048] [2022-11-02 20:50:20,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:20,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:20,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:20,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:20,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:50:20,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161761048] [2022-11-02 20:50:20,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161761048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:20,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:20,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:50:20,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804797997] [2022-11-02 20:50:20,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:20,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:50:20,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:50:20,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:50:20,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:50:20,090 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 359 out of 422 [2022-11-02 20:50:20,092 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 379 transitions, 788 flow. Second operand has 3 states, 3 states have (on average 361.3333333333333) internal successors, (1084), 3 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:20,092 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:50:20,092 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 359 of 422 [2022-11-02 20:50:20,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:50:28,817 INFO L130 PetriNetUnfolder]: 4491/22742 cut-off events. [2022-11-02 20:50:28,817 INFO L131 PetriNetUnfolder]: For 1675/1675 co-relation queries the response was YES. [2022-11-02 20:50:29,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28719 conditions, 22742 events. 4491/22742 cut-off events. For 1675/1675 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 287644 event pairs, 1698 based on Foata normal form. 0/19731 useless extension candidates. Maximal degree in co-relation 28710. Up to 2511 conditions per place. [2022-11-02 20:50:29,793 INFO L137 encePairwiseOnDemand]: 418/422 looper letters, 37 selfloop transitions, 3 changer transitions 0/394 dead transitions. [2022-11-02 20:50:29,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 394 transitions, 923 flow [2022-11-02 20:50:29,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:50:29,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:50:29,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1118 transitions. [2022-11-02 20:50:29,798 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8830963665086888 [2022-11-02 20:50:29,798 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1118 transitions. [2022-11-02 20:50:29,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1118 transitions. [2022-11-02 20:50:29,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:50:29,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1118 transitions. [2022-11-02 20:50:29,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 372.6666666666667) internal successors, (1118), 3 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:29,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:29,807 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:29,807 INFO L175 Difference]: Start difference. First operand has 363 places, 379 transitions, 788 flow. Second operand 3 states and 1118 transitions. [2022-11-02 20:50:29,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 394 transitions, 923 flow [2022-11-02 20:50:29,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 394 transitions, 923 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:50:29,817 INFO L231 Difference]: Finished difference. Result has 366 places, 379 transitions, 799 flow [2022-11-02 20:50:29,818 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=786, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=799, PETRI_PLACES=366, PETRI_TRANSITIONS=379} [2022-11-02 20:50:29,821 INFO L287 CegarLoopForPetriNet]: 374 programPoint places, -8 predicate places. [2022-11-02 20:50:29,821 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 379 transitions, 799 flow [2022-11-02 20:50:29,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 361.3333333333333) internal successors, (1084), 3 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:29,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:50:29,822 INFO L208 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] [2022-11-02 20:50:29,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 20:50:29,824 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-02 20:50:29,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:29,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1160838450, now seen corresponding path program 1 times [2022-11-02 20:50:29,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:29,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209430062] [2022-11-02 20:50:29,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:29,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:29,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:29,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:29,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:50:29,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209430062] [2022-11-02 20:50:29,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209430062] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:29,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:29,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:50:29,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642133686] [2022-11-02 20:50:29,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:29,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:50:29,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:50:29,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:50:29,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:50:29,907 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 363 out of 422 [2022-11-02 20:50:29,909 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 379 transitions, 799 flow. Second operand has 3 states, 3 states have (on average 365.0) internal successors, (1095), 3 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:29,909 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:50:29,910 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 363 of 422 [2022-11-02 20:50:29,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:50:37,283 INFO L130 PetriNetUnfolder]: 3439/17495 cut-off events. [2022-11-02 20:50:37,283 INFO L131 PetriNetUnfolder]: For 1523/1523 co-relation queries the response was YES. [2022-11-02 20:50:38,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22442 conditions, 17495 events. 3439/17495 cut-off events. For 1523/1523 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 211138 event pairs, 1538 based on Foata normal form. 0/15417 useless extension candidates. Maximal degree in co-relation 22431. Up to 2232 conditions per place. [2022-11-02 20:50:38,226 INFO L137 encePairwiseOnDemand]: 419/422 looper letters, 33 selfloop transitions, 2 changer transitions 0/393 dead transitions. [2022-11-02 20:50:38,226 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 393 transitions, 922 flow [2022-11-02 20:50:38,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:50:38,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:50:38,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1125 transitions. [2022-11-02 20:50:38,231 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8886255924170616 [2022-11-02 20:50:38,232 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1125 transitions. [2022-11-02 20:50:38,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1125 transitions. [2022-11-02 20:50:38,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:50:38,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1125 transitions. [2022-11-02 20:50:38,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 375.0) internal successors, (1125), 3 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:38,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:38,242 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:38,242 INFO L175 Difference]: Start difference. First operand has 366 places, 379 transitions, 799 flow. Second operand 3 states and 1125 transitions. [2022-11-02 20:50:38,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 393 transitions, 922 flow [2022-11-02 20:50:38,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 393 transitions, 919 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:50:38,266 INFO L231 Difference]: Finished difference. Result has 368 places, 380 transitions, 808 flow [2022-11-02 20:50:38,267 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=796, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=808, PETRI_PLACES=368, PETRI_TRANSITIONS=380} [2022-11-02 20:50:38,268 INFO L287 CegarLoopForPetriNet]: 374 programPoint places, -6 predicate places. [2022-11-02 20:50:38,268 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 380 transitions, 808 flow [2022-11-02 20:50:38,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 365.0) internal successors, (1095), 3 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:38,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:50:38,270 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:50:38,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 20:50:38,270 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-02 20:50:38,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:38,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1848432253, now seen corresponding path program 1 times [2022-11-02 20:50:38,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:38,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318713084] [2022-11-02 20:50:38,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:38,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:38,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:38,327 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:50:38,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:50:38,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318713084] [2022-11-02 20:50:38,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318713084] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:38,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:38,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:50:38,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5121] [2022-11-02 20:50:38,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:38,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:50:38,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:50:38,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:50:38,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:50:38,332 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 359 out of 422 [2022-11-02 20:50:38,334 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 380 transitions, 808 flow. Second operand has 3 states, 3 states have (on average 361.6666666666667) internal successors, (1085), 3 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:38,335 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:50:38,335 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 359 of 422 [2022-11-02 20:50:38,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:50:46,521 INFO L130 PetriNetUnfolder]: 4229/19775 cut-off events. [2022-11-02 20:50:46,522 INFO L131 PetriNetUnfolder]: For 1628/1628 co-relation queries the response was YES. [2022-11-02 20:50:47,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25658 conditions, 19775 events. 4229/19775 cut-off events. For 1628/1628 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 243124 event pairs, 1689 based on Foata normal form. 0/17105 useless extension candidates. Maximal degree in co-relation 25646. Up to 2484 conditions per place. [2022-11-02 20:50:47,723 INFO L137 encePairwiseOnDemand]: 418/422 looper letters, 36 selfloop transitions, 3 changer transitions 0/394 dead transitions. [2022-11-02 20:50:47,724 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 394 transitions, 934 flow [2022-11-02 20:50:47,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:50:47,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:50:47,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1117 transitions. [2022-11-02 20:50:47,729 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.882306477093207 [2022-11-02 20:50:47,730 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1117 transitions. [2022-11-02 20:50:47,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1117 transitions. [2022-11-02 20:50:47,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:50:47,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1117 transitions. [2022-11-02 20:50:47,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 372.3333333333333) internal successors, (1117), 3 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:47,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:47,739 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:47,740 INFO L175 Difference]: Start difference. First operand has 368 places, 380 transitions, 808 flow. Second operand 3 states and 1117 transitions. [2022-11-02 20:50:47,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 394 transitions, 934 flow [2022-11-02 20:50:47,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 394 transitions, 932 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:50:47,750 INFO L231 Difference]: Finished difference. Result has 370 places, 380 transitions, 817 flow [2022-11-02 20:50:47,751 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=804, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=817, PETRI_PLACES=370, PETRI_TRANSITIONS=380} [2022-11-02 20:50:47,752 INFO L287 CegarLoopForPetriNet]: 374 programPoint places, -4 predicate places. [2022-11-02 20:50:47,752 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 380 transitions, 817 flow [2022-11-02 20:50:47,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 361.6666666666667) internal successors, (1085), 3 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:47,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:50:47,753 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:50:47,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-02 20:50:47,754 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-02 20:50:47,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:47,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1553265593, now seen corresponding path program 1 times [2022-11-02 20:50:47,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:47,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875656409] [2022-11-02 20:50:47,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:47,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:47,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:47,811 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:50:47,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:50:47,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875656409] [2022-11-02 20:50:47,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875656409] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:47,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:47,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:50:47,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667748005] [2022-11-02 20:50:47,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:47,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:50:47,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:50:47,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:50:47,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:50:47,816 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 363 out of 422 [2022-11-02 20:50:47,817 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 380 transitions, 817 flow. Second operand has 3 states, 3 states have (on average 365.3333333333333) internal successors, (1096), 3 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:47,818 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:50:47,818 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 363 of 422 [2022-11-02 20:50:47,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:50:53,575 INFO L130 PetriNetUnfolder]: 3197/14565 cut-off events. [2022-11-02 20:50:53,575 INFO L131 PetriNetUnfolder]: For 1515/1515 co-relation queries the response was YES. [2022-11-02 20:50:54,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19492 conditions, 14565 events. 3197/14565 cut-off events. For 1515/1515 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 169206 event pairs, 1530 based on Foata normal form. 0/12810 useless extension candidates. Maximal degree in co-relation 19479. Up to 2215 conditions per place. [2022-11-02 20:50:54,388 INFO L137 encePairwiseOnDemand]: 419/422 looper letters, 32 selfloop transitions, 2 changer transitions 0/393 dead transitions. [2022-11-02 20:50:54,388 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 393 transitions, 931 flow [2022-11-02 20:50:54,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:50:54,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:50:54,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1124 transitions. [2022-11-02 20:50:54,392 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8878357030015798 [2022-11-02 20:50:54,392 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1124 transitions. [2022-11-02 20:50:54,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1124 transitions. [2022-11-02 20:50:54,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:50:54,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1124 transitions. [2022-11-02 20:50:54,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 374.6666666666667) internal successors, (1124), 3 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:54,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:54,403 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:54,403 INFO L175 Difference]: Start difference. First operand has 370 places, 380 transitions, 817 flow. Second operand 3 states and 1124 transitions. [2022-11-02 20:50:54,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 393 transitions, 931 flow [2022-11-02 20:50:54,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 393 transitions, 928 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:50:54,420 INFO L231 Difference]: Finished difference. Result has 372 places, 381 transitions, 826 flow [2022-11-02 20:50:54,420 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=814, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=826, PETRI_PLACES=372, PETRI_TRANSITIONS=381} [2022-11-02 20:50:54,421 INFO L287 CegarLoopForPetriNet]: 374 programPoint places, -2 predicate places. [2022-11-02 20:50:54,421 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 381 transitions, 826 flow [2022-11-02 20:50:54,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 365.3333333333333) internal successors, (1096), 3 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:54,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:50:54,423 INFO L208 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] [2022-11-02 20:50:54,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-02 20:50:54,423 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-02 20:50:54,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:54,424 INFO L85 PathProgramCache]: Analyzing trace with hash 431457669, now seen corresponding path program 1 times [2022-11-02 20:50:54,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:54,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488611903] [2022-11-02 20:50:54,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:54,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:54,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:54,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:54,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:50:54,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488611903] [2022-11-02 20:50:54,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488611903] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:50:54,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205172832] [2022-11-02 20:50:54,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:54,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:50:54,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3531b0f6-b659-4bfd-8ed2-1a01056ba3e3/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:50:54,567 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3531b0f6-b659-4bfd-8ed2-1a01056ba3e3/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:50:54,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3531b0f6-b659-4bfd-8ed2-1a01056ba3e3/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:50:54,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:54,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:50:54,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:50:54,943 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:54,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:50:54,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:54,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205172832] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:50:54,991 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:50:54,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2022-11-02 20:50:54,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864509755] [2022-11-02 20:50:54,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:50:54,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:50:54,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:50:54,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:50:54,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:50:54,996 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 362 out of 422 [2022-11-02 20:50:54,999 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 381 transitions, 826 flow. Second operand has 5 states, 5 states have (on average 364.2) internal successors, (1821), 5 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:54,999 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:50:55,000 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 362 of 422 [2022-11-02 20:50:55,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:51:00,799 INFO L130 PetriNetUnfolder]: 3613/14085 cut-off events. [2022-11-02 20:51:00,799 INFO L131 PetriNetUnfolder]: For 1647/1647 co-relation queries the response was YES. [2022-11-02 20:51:01,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20200 conditions, 14085 events. 3613/14085 cut-off events. For 1647/1647 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 158832 event pairs, 1218 based on Foata normal form. 63/12466 useless extension candidates. Maximal degree in co-relation 20186. Up to 1723 conditions per place. [2022-11-02 20:51:01,470 INFO L137 encePairwiseOnDemand]: 416/422 looper letters, 62 selfloop transitions, 6 changer transitions 0/426 dead transitions. [2022-11-02 20:51:01,470 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 426 transitions, 1152 flow [2022-11-02 20:51:01,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:51:01,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 20:51:01,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2241 transitions. [2022-11-02 20:51:01,479 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8850710900473934 [2022-11-02 20:51:01,479 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2241 transitions. [2022-11-02 20:51:01,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2241 transitions. [2022-11-02 20:51:01,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:51:01,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2241 transitions. [2022-11-02 20:51:01,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 373.5) internal successors, (2241), 6 states have internal predecessors, (2241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:01,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 422.0) internal successors, (2954), 7 states have internal predecessors, (2954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:01,513 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 422.0) internal successors, (2954), 7 states have internal predecessors, (2954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:01,514 INFO L175 Difference]: Start difference. First operand has 372 places, 381 transitions, 826 flow. Second operand 6 states and 2241 transitions. [2022-11-02 20:51:01,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 426 transitions, 1152 flow [2022-11-02 20:51:01,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 426 transitions, 1150 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:51:01,527 INFO L231 Difference]: Finished difference. Result has 380 places, 384 transitions, 860 flow [2022-11-02 20:51:01,527 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=824, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=860, PETRI_PLACES=380, PETRI_TRANSITIONS=384} [2022-11-02 20:51:01,528 INFO L287 CegarLoopForPetriNet]: 374 programPoint places, 6 predicate places. [2022-11-02 20:51:01,529 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 384 transitions, 860 flow [2022-11-02 20:51:01,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 364.2) internal successors, (1821), 5 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:01,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:51:01,530 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:01,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3531b0f6-b659-4bfd-8ed2-1a01056ba3e3/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:51:01,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3531b0f6-b659-4bfd-8ed2-1a01056ba3e3/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-02 20:51:01,746 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-02 20:51:01,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:01,746 INFO L85 PathProgramCache]: Analyzing trace with hash -805755012, now seen corresponding path program 1 times [2022-11-02 20:51:01,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:01,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781036108] [2022-11-02 20:51:01,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:01,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:01,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:01,806 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-02 20:51:01,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:01,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781036108] [2022-11-02 20:51:01,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781036108] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:01,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:01,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:51:01,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132651223] [2022-11-02 20:51:01,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:01,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:51:01,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:01,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:51:01,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:51:01,813 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 359 out of 422 [2022-11-02 20:51:01,815 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 384 transitions, 860 flow. Second operand has 3 states, 3 states have (on average 362.0) internal successors, (1086), 3 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:01,815 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:51:01,815 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 359 of 422 [2022-11-02 20:51:01,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand