./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-bakery-4.wvr.c --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_9e5b047d-c6fc-4840-af56-d335c2ac47c2/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e5b047d-c6fc-4840-af56-d335c2ac47c2/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_9e5b047d-c6fc-4840-af56-d335c2ac47c2/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e5b047d-c6fc-4840-af56-d335c2ac47c2/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-bakery-4.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e5b047d-c6fc-4840-af56-d335c2ac47c2/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_9e5b047d-c6fc-4840-af56-d335c2ac47c2/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 39dcc47a23129180b44ef3e235976e9c499f5290fa3f0e6dd106879ae94f5ae2 --- 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 21:04:26,758 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:04:26,762 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:04:26,806 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:04:26,806 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:04:26,807 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:04:26,809 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:04:26,811 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:04:26,812 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:04:26,813 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:04:26,814 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:04:26,816 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:04:26,816 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:04:26,817 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:04:26,819 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:04:26,820 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:04:26,821 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:04:26,822 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:04:26,823 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:04:26,825 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:04:26,827 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:04:26,828 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:04:26,830 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:04:26,831 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:04:26,834 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:04:26,835 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:04:26,835 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:04:26,836 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:04:26,837 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:04:26,838 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:04:26,838 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:04:26,839 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:04:26,840 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:04:26,841 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:04:26,842 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:04:26,842 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:04:26,843 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:04:26,844 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:04:26,844 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:04:26,845 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:04:26,846 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:04:26,847 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e5b047d-c6fc-4840-af56-d335c2ac47c2/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 21:04:26,870 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:04:26,870 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:04:26,871 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:04:26,871 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:04:26,872 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:04:26,872 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:04:26,873 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:04:26,873 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:04:26,873 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:04:26,874 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:04:26,874 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:04:26,874 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:04:26,875 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:04:26,875 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:04:26,875 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:04:26,875 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:04:26,876 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:04:26,876 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:04:26,876 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:04:26,876 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:04:26,877 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:04:26,877 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:04:26,877 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:04:26,877 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:04:26,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:04:26,878 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:04:26,878 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:04:26,878 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:04:26,879 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:04:26,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:04:26,879 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:04:26,879 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:04:26,880 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:04:26,880 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_9e5b047d-c6fc-4840-af56-d335c2ac47c2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e5b047d-c6fc-4840-af56-d335c2ac47c2/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39dcc47a23129180b44ef3e235976e9c499f5290fa3f0e6dd106879ae94f5ae2 [2022-11-02 21:04:27,215 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:04:27,251 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:04:27,254 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:04:27,256 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:04:27,258 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:04:27,260 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e5b047d-c6fc-4840-af56-d335c2ac47c2/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/weaver/parallel-bakery-4.wvr.c [2022-11-02 21:04:27,341 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e5b047d-c6fc-4840-af56-d335c2ac47c2/bin/uautomizer-Dbtcem3rbc/data/74ae9380f/aaaf89a2ee184c3b8fa3a7ed78faedfd/FLAG3f666a943 [2022-11-02 21:04:28,005 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:04:28,006 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e5b047d-c6fc-4840-af56-d335c2ac47c2/sv-benchmarks/c/weaver/parallel-bakery-4.wvr.c [2022-11-02 21:04:28,023 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e5b047d-c6fc-4840-af56-d335c2ac47c2/bin/uautomizer-Dbtcem3rbc/data/74ae9380f/aaaf89a2ee184c3b8fa3a7ed78faedfd/FLAG3f666a943 [2022-11-02 21:04:28,308 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e5b047d-c6fc-4840-af56-d335c2ac47c2/bin/uautomizer-Dbtcem3rbc/data/74ae9380f/aaaf89a2ee184c3b8fa3a7ed78faedfd [2022-11-02 21:04:28,312 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:04:28,315 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:04:28,320 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:04:28,321 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:04:28,326 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:04:28,327 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:04:28" (1/1) ... [2022-11-02 21:04:28,328 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44cbc702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:28, skipping insertion in model container [2022-11-02 21:04:28,329 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:04:28" (1/1) ... [2022-11-02 21:04:28,339 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:04:28,370 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:04:28,657 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_9e5b047d-c6fc-4840-af56-d335c2ac47c2/sv-benchmarks/c/weaver/parallel-bakery-4.wvr.c[7978,7991] [2022-11-02 21:04:28,661 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:04:28,681 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:04:28,752 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_9e5b047d-c6fc-4840-af56-d335c2ac47c2/sv-benchmarks/c/weaver/parallel-bakery-4.wvr.c[7978,7991] [2022-11-02 21:04:28,754 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:04:28,780 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:04:28,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:28 WrapperNode [2022-11-02 21:04:28,781 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:04:28,782 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:04:28,782 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:04:28,782 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:04:28,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:28" (1/1) ... [2022-11-02 21:04:28,820 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:28" (1/1) ... [2022-11-02 21:04:28,858 INFO L138 Inliner]: procedures = 23, calls = 176, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 440 [2022-11-02 21:04:28,858 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:04:28,859 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:04:28,859 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:04:28,859 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:04:28,870 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:28" (1/1) ... [2022-11-02 21:04:28,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:28" (1/1) ... [2022-11-02 21:04:28,874 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:28" (1/1) ... [2022-11-02 21:04:28,874 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:28" (1/1) ... [2022-11-02 21:04:28,883 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:28" (1/1) ... [2022-11-02 21:04:28,894 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:28" (1/1) ... [2022-11-02 21:04:28,896 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:28" (1/1) ... [2022-11-02 21:04:28,898 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:28" (1/1) ... [2022-11-02 21:04:28,902 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:04:28,903 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:04:28,903 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:04:28,904 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:04:28,923 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:28" (1/1) ... [2022-11-02 21:04:28,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:04:28,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e5b047d-c6fc-4840-af56-d335c2ac47c2/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:04:28,956 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e5b047d-c6fc-4840-af56-d335c2ac47c2/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:04:28,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e5b047d-c6fc-4840-af56-d335c2ac47c2/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:04:29,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:04:29,008 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-02 21:04:29,008 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-02 21:04:29,008 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-02 21:04:29,009 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-02 21:04:29,009 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-02 21:04:29,010 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-02 21:04:29,010 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-02 21:04:29,011 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-02 21:04:29,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 21:04:29,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 21:04:29,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 21:04:29,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-02 21:04:29,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-02 21:04:29,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:04:29,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:04:29,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 21:04:29,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 21:04:29,015 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 21:04:29,200 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:04:29,202 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:04:29,843 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:04:30,204 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:04:30,205 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-02 21:04:30,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:04:30 BoogieIcfgContainer [2022-11-02 21:04:30,209 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:04:30,212 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:04:30,212 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:04:30,226 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:04:30,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:04:28" (1/3) ... [2022-11-02 21:04:30,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eab3575 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:04:30, skipping insertion in model container [2022-11-02 21:04:30,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:28" (2/3) ... [2022-11-02 21:04:30,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eab3575 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:04:30, skipping insertion in model container [2022-11-02 21:04:30,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:04:30" (3/3) ... [2022-11-02 21:04:30,230 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-4.wvr.c [2022-11-02 21:04:30,249 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 21:04:30,261 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:04:30,262 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:04:30,262 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 21:04:30,395 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-02 21:04:30,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 213 places, 202 transitions, 436 flow [2022-11-02 21:04:30,549 INFO L130 PetriNetUnfolder]: 2/198 cut-off events. [2022-11-02 21:04:30,550 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-02 21:04:30,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 198 events. 2/198 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 206 event pairs, 0 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 150. Up to 2 conditions per place. [2022-11-02 21:04:30,554 INFO L82 GeneralOperation]: Start removeDead. Operand has 213 places, 202 transitions, 436 flow [2022-11-02 21:04:30,560 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 196 places, 185 transitions, 394 flow [2022-11-02 21:04:30,572 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:04:30,581 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;@51a443cd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:04:30,581 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-02 21:04:30,684 INFO L130 PetriNetUnfolder]: 2/184 cut-off events. [2022-11-02 21:04:30,705 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-02 21:04:30,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:04:30,706 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:04:30,707 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-02 21:04:30,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:30,726 INFO L85 PathProgramCache]: Analyzing trace with hash 560411039, now seen corresponding path program 1 times [2022-11-02 21:04:30,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:30,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163785551] [2022-11-02 21:04:30,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:30,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:31,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:32,876 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 21:04:32,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:32,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163785551] [2022-11-02 21:04:32,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163785551] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:32,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:32,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-02 21:04:32,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241731548] [2022-11-02 21:04:32,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:32,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-02 21:04:32,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:32,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-02 21:04:32,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-02 21:04:32,958 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 202 [2022-11-02 21:04:32,967 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 185 transitions, 394 flow. Second operand has 15 states, 15 states have (on average 127.93333333333334) internal successors, (1919), 15 states have internal predecessors, (1919), 0 states have call successors, (0), 0 states 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 21:04:32,967 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:04:32,967 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 202 [2022-11-02 21:04:32,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:05:06,789 INFO L130 PetriNetUnfolder]: 93240/165958 cut-off events. [2022-11-02 21:05:06,789 INFO L131 PetriNetUnfolder]: For 11533/11533 co-relation queries the response was YES. [2022-11-02 21:05:07,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302885 conditions, 165958 events. 93240/165958 cut-off events. For 11533/11533 co-relation queries the response was YES. Maximal size of possible extension queue 3498. Compared 1709938 event pairs, 56436 based on Foata normal form. 9/165022 useless extension candidates. Maximal degree in co-relation 301046. Up to 76469 conditions per place. [2022-11-02 21:05:08,466 INFO L137 encePairwiseOnDemand]: 180/202 looper letters, 341 selfloop transitions, 31 changer transitions 30/509 dead transitions. [2022-11-02 21:05:08,467 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 509 transitions, 1948 flow [2022-11-02 21:05:08,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-02 21:05:08,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-11-02 21:05:08,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3610 transitions. [2022-11-02 21:05:08,494 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6873571972581873 [2022-11-02 21:05:08,495 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3610 transitions. [2022-11-02 21:05:08,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3610 transitions. [2022-11-02 21:05:08,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:05:08,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3610 transitions. [2022-11-02 21:05:08,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 138.84615384615384) internal successors, (3610), 26 states have internal predecessors, (3610), 0 states have call successors, (0), 0 states 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 21:05:08,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 202.0) internal successors, (5454), 27 states have internal predecessors, (5454), 0 states have call successors, (0), 0 states 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 21:05:08,539 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 202.0) internal successors, (5454), 27 states have internal predecessors, (5454), 0 states have call successors, (0), 0 states 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 21:05:08,541 INFO L175 Difference]: Start difference. First operand has 196 places, 185 transitions, 394 flow. Second operand 26 states and 3610 transitions. [2022-11-02 21:05:08,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 509 transitions, 1948 flow [2022-11-02 21:05:11,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 509 transitions, 1864 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-02 21:05:11,659 INFO L231 Difference]: Finished difference. Result has 220 places, 210 transitions, 543 flow [2022-11-02 21:05:11,661 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=543, PETRI_PLACES=220, PETRI_TRANSITIONS=210} [2022-11-02 21:05:11,667 INFO L287 CegarLoopForPetriNet]: 196 programPoint places, 24 predicate places. [2022-11-02 21:05:11,668 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 210 transitions, 543 flow [2022-11-02 21:05:11,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 127.93333333333334) internal successors, (1919), 15 states have internal predecessors, (1919), 0 states have call successors, (0), 0 states 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 21:05:11,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:05:11,672 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:05:11,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:05:11,673 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-02 21:05:11,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:11,675 INFO L85 PathProgramCache]: Analyzing trace with hash 348921185, now seen corresponding path program 2 times [2022-11-02 21:05:11,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:05:11,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173398458] [2022-11-02 21:05:11,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:11,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:05:11,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:14,765 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 21:05:14,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:05:14,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173398458] [2022-11-02 21:05:14,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173398458] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:14,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:14,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 21:05:14,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472729371] [2022-11-02 21:05:14,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:14,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 21:05:14,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:05:14,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 21:05:14,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:05:14,775 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 202 [2022-11-02 21:05:14,780 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 210 transitions, 543 flow. Second operand has 18 states, 18 states have (on average 141.38888888888889) internal successors, (2545), 18 states have internal predecessors, (2545), 0 states have call successors, (0), 0 states 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 21:05:14,780 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:05:14,780 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 202 [2022-11-02 21:05:14,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand