./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_203b5f1b-4ef7-4ffb-9b3f-5bfb85b6f5c9/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203b5f1b-4ef7-4ffb-9b3f-5bfb85b6f5c9/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203b5f1b-4ef7-4ffb-9b3f-5bfb85b6f5c9/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203b5f1b-4ef7-4ffb-9b3f-5bfb85b6f5c9/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203b5f1b-4ef7-4ffb-9b3f-5bfb85b6f5c9/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203b5f1b-4ef7-4ffb-9b3f-5bfb85b6f5c9/bin/uautomizer-tPACEb0tL8 --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 e280ea7002eb926faba3195da50aa743246f3289123bb9a1b445dc9aaf8e8f3d --- 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-e04fb08 [2022-11-16 12:05:44,817 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:05:44,819 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:05:44,853 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:05:44,854 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:05:44,855 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:05:44,856 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:05:44,858 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:05:44,867 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:05:44,873 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:05:44,875 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:05:44,878 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:05:44,878 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:05:44,881 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:05:44,884 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:05:44,887 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:05:44,889 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:05:44,889 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:05:44,892 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:05:44,898 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:05:44,900 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:05:44,902 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:05:44,906 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:05:44,907 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:05:44,913 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:05:44,913 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:05:44,913 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:05:44,914 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:05:44,915 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:05:44,916 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:05:44,916 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:05:44,917 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:05:44,917 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:05:44,918 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:05:44,919 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:05:44,919 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:05:44,925 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:05:44,926 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:05:44,926 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:05:44,927 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:05:44,927 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:05:44,928 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203b5f1b-4ef7-4ffb-9b3f-5bfb85b6f5c9/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:05:44,973 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:05:44,974 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:05:44,974 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:05:44,974 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:05:44,975 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:05:44,976 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:05:44,976 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:05:44,977 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:05:44,977 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:05:44,977 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:05:44,978 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:05:44,978 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:05:44,979 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:05:44,979 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:05:44,979 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:05:44,979 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:05:44,979 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:05:44,980 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:05:44,980 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:05:44,980 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:05:44,980 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:05:44,980 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:05:44,981 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:05:44,981 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:05:44,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:05:44,981 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:05:44,981 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:05:44,982 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:05:44,982 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:05:44,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:05:44,982 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:05:44,982 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:05:44,983 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:05:44,983 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_203b5f1b-4ef7-4ffb-9b3f-5bfb85b6f5c9/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203b5f1b-4ef7-4ffb-9b3f-5bfb85b6f5c9/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e280ea7002eb926faba3195da50aa743246f3289123bb9a1b445dc9aaf8e8f3d [2022-11-16 12:05:45,264 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:05:45,294 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:05:45,298 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:05:45,299 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:05:45,300 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:05:45,302 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203b5f1b-4ef7-4ffb-9b3f-5bfb85b6f5c9/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c [2022-11-16 12:05:45,368 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203b5f1b-4ef7-4ffb-9b3f-5bfb85b6f5c9/bin/uautomizer-tPACEb0tL8/data/d0e50c320/4aa69ba63cd541fe8c56a4177350573e/FLAGbcd3b6df9 [2022-11-16 12:05:46,012 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:05:46,013 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203b5f1b-4ef7-4ffb-9b3f-5bfb85b6f5c9/sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c [2022-11-16 12:05:46,023 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203b5f1b-4ef7-4ffb-9b3f-5bfb85b6f5c9/bin/uautomizer-tPACEb0tL8/data/d0e50c320/4aa69ba63cd541fe8c56a4177350573e/FLAGbcd3b6df9 [2022-11-16 12:05:46,346 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203b5f1b-4ef7-4ffb-9b3f-5bfb85b6f5c9/bin/uautomizer-tPACEb0tL8/data/d0e50c320/4aa69ba63cd541fe8c56a4177350573e [2022-11-16 12:05:46,349 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:05:46,352 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:05:46,357 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:05:46,357 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:05:46,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:05:46,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:05:46" (1/1) ... [2022-11-16 12:05:46,365 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58b144d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:46, skipping insertion in model container [2022-11-16 12:05:46,366 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:05:46" (1/1) ... [2022-11-16 12:05:46,375 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:05:46,412 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:05:46,753 WARN L229 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_203b5f1b-4ef7-4ffb-9b3f-5bfb85b6f5c9/sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c[3182,3195] [2022-11-16 12:05:46,773 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:05:46,792 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:05:46,844 WARN L229 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_203b5f1b-4ef7-4ffb-9b3f-5bfb85b6f5c9/sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c[3182,3195] [2022-11-16 12:05:46,849 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:05:46,878 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:05:46,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:46 WrapperNode [2022-11-16 12:05:46,879 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:05:46,880 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:05:46,880 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:05:46,880 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:05:46,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:46" (1/1) ... [2022-11-16 12:05:46,905 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:46" (1/1) ... [2022-11-16 12:05:46,944 INFO L138 Inliner]: procedures = 28, calls = 74, calls flagged for inlining = 18, calls inlined = 26, statements flattened = 362 [2022-11-16 12:05:46,945 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:05:46,946 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:05:46,946 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:05:46,946 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:05:46,959 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:46" (1/1) ... [2022-11-16 12:05:46,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:46" (1/1) ... [2022-11-16 12:05:46,971 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:46" (1/1) ... [2022-11-16 12:05:46,983 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:46" (1/1) ... [2022-11-16 12:05:47,000 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:46" (1/1) ... [2022-11-16 12:05:47,014 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:46" (1/1) ... [2022-11-16 12:05:47,020 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:46" (1/1) ... [2022-11-16 12:05:47,022 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:46" (1/1) ... [2022-11-16 12:05:47,028 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:05:47,029 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:05:47,029 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:05:47,029 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:05:47,034 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:46" (1/1) ... [2022-11-16 12:05:47,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:05:47,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203b5f1b-4ef7-4ffb-9b3f-5bfb85b6f5c9/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:05:47,069 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203b5f1b-4ef7-4ffb-9b3f-5bfb85b6f5c9/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:05:47,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203b5f1b-4ef7-4ffb-9b3f-5bfb85b6f5c9/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:05:47,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:05:47,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 12:05:47,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:05:47,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:05:47,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:05:47,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 12:05:47,112 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 12:05:47,113 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 12:05:47,113 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 12:05:47,114 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 12:05:47,114 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 12:05:47,114 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 12:05:47,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:05:47,114 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 12:05:47,114 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 12:05:47,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:05:47,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:05:47,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:05:47,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:05:47,117 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:05:47,356 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:05:47,358 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:05:48,006 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:05:48,200 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:05:48,200 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-11-16 12:05:48,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:05:48 BoogieIcfgContainer [2022-11-16 12:05:48,203 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:05:48,205 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:05:48,205 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:05:48,208 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:05:48,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:05:46" (1/3) ... [2022-11-16 12:05:48,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4da9743c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:05:48, skipping insertion in model container [2022-11-16 12:05:48,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:46" (2/3) ... [2022-11-16 12:05:48,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4da9743c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:05:48, skipping insertion in model container [2022-11-16 12:05:48,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:05:48" (3/3) ... [2022-11-16 12:05:48,211 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-dot-product-alt.wvr.c [2022-11-16 12:05:48,220 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:05:48,227 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:05:48,227 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:05:48,228 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:05:48,312 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 12:05:48,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 327 places, 352 transitions, 728 flow [2022-11-16 12:05:48,579 INFO L130 PetriNetUnfolder]: 35/349 cut-off events. [2022-11-16 12:05:48,579 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 12:05:48,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 362 conditions, 349 events. 35/349 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 668 event pairs, 0 based on Foata normal form. 0/313 useless extension candidates. Maximal degree in co-relation 280. Up to 2 conditions per place. [2022-11-16 12:05:48,590 INFO L82 GeneralOperation]: Start removeDead. Operand has 327 places, 352 transitions, 728 flow [2022-11-16 12:05:48,604 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 313 places, 338 transitions, 694 flow [2022-11-16 12:05:48,627 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:05:48,632 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;@d2a2d2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:05:48,633 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-16 12:05:48,771 INFO L130 PetriNetUnfolder]: 35/337 cut-off events. [2022-11-16 12:05:48,771 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 12:05:48,771 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:05:48,773 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:48,774 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 1 more)] === [2022-11-16 12:05:48,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:48,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1760372727, now seen corresponding path program 1 times [2022-11-16 12:05:48,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:48,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291647619] [2022-11-16 12:05:48,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:48,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:48,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:49,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:49,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:49,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291647619] [2022-11-16 12:05:49,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291647619] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:49,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:49,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:05:49,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553931099] [2022-11-16 12:05:49,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:49,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:05:49,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:49,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:05:49,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:05:49,236 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 323 out of 352 [2022-11-16 12:05:49,242 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 338 transitions, 694 flow. Second operand has 2 states, 2 states have (on average 329.0) internal successors, (658), 2 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:49,242 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:05:49,242 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 323 of 352 [2022-11-16 12:05:49,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:05:49,448 INFO L130 PetriNetUnfolder]: 47/520 cut-off events. [2022-11-16 12:05:49,449 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-11-16 12:05:49,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 582 conditions, 520 events. 47/520 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1713 event pairs, 15 based on Foata normal form. 50/514 useless extension candidates. Maximal degree in co-relation 351. Up to 37 conditions per place. [2022-11-16 12:05:49,460 INFO L137 encePairwiseOnDemand]: 333/352 looper letters, 9 selfloop transitions, 0 changer transitions 9/319 dead transitions. [2022-11-16 12:05:49,460 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 319 transitions, 674 flow [2022-11-16 12:05:49,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:05:49,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 12:05:49,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 674 transitions. [2022-11-16 12:05:49,485 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9573863636363636 [2022-11-16 12:05:49,486 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 674 transitions. [2022-11-16 12:05:49,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 674 transitions. [2022-11-16 12:05:49,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:05:49,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 674 transitions. [2022-11-16 12:05:49,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 337.0) internal successors, (674), 2 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:49,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 352.0) internal successors, (1056), 3 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:49,511 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 352.0) internal successors, (1056), 3 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:49,513 INFO L175 Difference]: Start difference. First operand has 313 places, 338 transitions, 694 flow. Second operand 2 states and 674 transitions. [2022-11-16 12:05:49,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 319 transitions, 674 flow [2022-11-16 12:05:49,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 319 transitions, 662 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-16 12:05:49,532 INFO L231 Difference]: Finished difference. Result has 308 places, 310 transitions, 626 flow [2022-11-16 12:05:49,535 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=644, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=626, PETRI_PLACES=308, PETRI_TRANSITIONS=310} [2022-11-16 12:05:49,540 INFO L288 CegarLoopForPetriNet]: 313 programPoint places, -5 predicate places. [2022-11-16 12:05:49,540 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 310 transitions, 626 flow [2022-11-16 12:05:49,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 329.0) internal successors, (658), 2 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:49,542 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:05:49,542 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:49,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:05:49,543 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 1 more)] === [2022-11-16 12:05:49,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:49,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1761397245, now seen corresponding path program 1 times [2022-11-16 12:05:49,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:49,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090552759] [2022-11-16 12:05:49,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:49,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:49,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:50,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:50,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:50,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090552759] [2022-11-16 12:05:50,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090552759] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:50,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:50,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:05:50,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496979595] [2022-11-16 12:05:50,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:50,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:05:50,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:50,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:05:50,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:05:50,259 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 352 [2022-11-16 12:05:50,262 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 310 transitions, 626 flow. Second operand has 6 states, 6 states have (on average 282.0) internal successors, (1692), 6 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:50,262 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:05:50,262 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 352 [2022-11-16 12:05:50,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:05:50,720 INFO L130 PetriNetUnfolder]: 114/992 cut-off events. [2022-11-16 12:05:50,721 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-11-16 12:05:50,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1130 conditions, 992 events. 114/992 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 4773 event pairs, 6 based on Foata normal form. 1/879 useless extension candidates. Maximal degree in co-relation 1127. Up to 52 conditions per place. [2022-11-16 12:05:50,735 INFO L137 encePairwiseOnDemand]: 344/352 looper letters, 59 selfloop transitions, 6 changer transitions 4/332 dead transitions. [2022-11-16 12:05:50,735 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 332 transitions, 817 flow [2022-11-16 12:05:50,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:05:50,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:05:50,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1726 transitions. [2022-11-16 12:05:50,740 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8172348484848485 [2022-11-16 12:05:50,741 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1726 transitions. [2022-11-16 12:05:50,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1726 transitions. [2022-11-16 12:05:50,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:05:50,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1726 transitions. [2022-11-16 12:05:50,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 287.6666666666667) internal successors, (1726), 6 states have internal predecessors, (1726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:50,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 352.0) internal successors, (2464), 7 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:50,753 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 352.0) internal successors, (2464), 7 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:50,753 INFO L175 Difference]: Start difference. First operand has 308 places, 310 transitions, 626 flow. Second operand 6 states and 1726 transitions. [2022-11-16 12:05:50,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 332 transitions, 817 flow [2022-11-16 12:05:50,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 332 transitions, 817 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:05:50,763 INFO L231 Difference]: Finished difference. Result has 307 places, 314 transitions, 662 flow [2022-11-16 12:05:50,765 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=626, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=662, PETRI_PLACES=307, PETRI_TRANSITIONS=314} [2022-11-16 12:05:50,765 INFO L288 CegarLoopForPetriNet]: 313 programPoint places, -6 predicate places. [2022-11-16 12:05:50,766 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 314 transitions, 662 flow [2022-11-16 12:05:50,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 282.0) internal successors, (1692), 6 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:50,767 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:05:50,767 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:50,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:05:50,768 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:05:50,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:50,768 INFO L85 PathProgramCache]: Analyzing trace with hash 497075190, now seen corresponding path program 1 times [2022-11-16 12:05:50,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:50,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230730996] [2022-11-16 12:05:50,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:50,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:50,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:51,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:51,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:51,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230730996] [2022-11-16 12:05:51,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230730996] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:51,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:51,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:05:51,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781332978] [2022-11-16 12:05:51,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:51,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:05:51,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:51,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:05:51,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:05:51,177 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 352 [2022-11-16 12:05:51,180 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 314 transitions, 662 flow. Second operand has 7 states, 7 states have (on average 277.7142857142857) internal successors, (1944), 7 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:51,180 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:05:51,181 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 352 [2022-11-16 12:05:51,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:05:53,899 INFO L130 PetriNetUnfolder]: 1663/7948 cut-off events. [2022-11-16 12:05:53,899 INFO L131 PetriNetUnfolder]: For 804/844 co-relation queries the response was YES. [2022-11-16 12:05:53,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10928 conditions, 7948 events. 1663/7948 cut-off events. For 804/844 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 76255 event pairs, 523 based on Foata normal form. 0/6672 useless extension candidates. Maximal degree in co-relation 10921. Up to 716 conditions per place. [2022-11-16 12:05:54,069 INFO L137 encePairwiseOnDemand]: 336/352 looper letters, 177 selfloop transitions, 25 changer transitions 0/453 dead transitions. [2022-11-16 12:05:54,069 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 453 transitions, 1451 flow [2022-11-16 12:05:54,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:05:54,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-16 12:05:54,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4280 transitions. [2022-11-16 12:05:54,080 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8106060606060606 [2022-11-16 12:05:54,081 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4280 transitions. [2022-11-16 12:05:54,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4280 transitions. [2022-11-16 12:05:54,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:05:54,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4280 transitions. [2022-11-16 12:05:54,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 285.3333333333333) internal successors, (4280), 15 states have internal predecessors, (4280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:54,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 352.0) internal successors, (5632), 16 states have internal predecessors, (5632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:54,109 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 352.0) internal successors, (5632), 16 states have internal predecessors, (5632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:54,109 INFO L175 Difference]: Start difference. First operand has 307 places, 314 transitions, 662 flow. Second operand 15 states and 4280 transitions. [2022-11-16 12:05:54,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 453 transitions, 1451 flow [2022-11-16 12:05:54,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 453 transitions, 1447 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-16 12:05:54,119 INFO L231 Difference]: Finished difference. Result has 322 places, 334 transitions, 792 flow [2022-11-16 12:05:54,120 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=792, PETRI_PLACES=322, PETRI_TRANSITIONS=334} [2022-11-16 12:05:54,122 INFO L288 CegarLoopForPetriNet]: 313 programPoint places, 9 predicate places. [2022-11-16 12:05:54,123 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 334 transitions, 792 flow [2022-11-16 12:05:54,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.7142857142857) internal successors, (1944), 7 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:54,125 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:05:54,125 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:54,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:05:54,126 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:05:54,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:54,127 INFO L85 PathProgramCache]: Analyzing trace with hash -861711133, now seen corresponding path program 1 times [2022-11-16 12:05:54,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:54,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759699649] [2022-11-16 12:05:54,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:54,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:54,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:54,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:54,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:54,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759699649] [2022-11-16 12:05:54,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759699649] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:54,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:54,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:05:54,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810427280] [2022-11-16 12:05:54,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:54,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:05:54,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:54,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:05:54,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:05:54,409 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 352 [2022-11-16 12:05:54,411 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 334 transitions, 792 flow. Second operand has 5 states, 5 states have (on average 315.8) internal successors, (1579), 5 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:54,411 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:05:54,411 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 352 [2022-11-16 12:05:54,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:05:56,499 INFO L130 PetriNetUnfolder]: 1607/6098 cut-off events. [2022-11-16 12:05:56,500 INFO L131 PetriNetUnfolder]: For 1293/1433 co-relation queries the response was YES. [2022-11-16 12:05:56,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9761 conditions, 6098 events. 1607/6098 cut-off events. For 1293/1433 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 53171 event pairs, 411 based on Foata normal form. 20/5274 useless extension candidates. Maximal degree in co-relation 9750. Up to 1355 conditions per place. [2022-11-16 12:05:56,604 INFO L137 encePairwiseOnDemand]: 347/352 looper letters, 51 selfloop transitions, 4 changer transitions 0/366 dead transitions. [2022-11-16 12:05:56,604 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 366 transitions, 1022 flow [2022-11-16 12:05:56,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:05:56,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:05:56,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1918 transitions. [2022-11-16 12:05:56,611 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9081439393939394 [2022-11-16 12:05:56,615 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1918 transitions. [2022-11-16 12:05:56,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1918 transitions. [2022-11-16 12:05:56,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:05:56,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1918 transitions. [2022-11-16 12:05:56,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 319.6666666666667) internal successors, (1918), 6 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:56,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 352.0) internal successors, (2464), 7 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:56,629 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 352.0) internal successors, (2464), 7 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:56,629 INFO L175 Difference]: Start difference. First operand has 322 places, 334 transitions, 792 flow. Second operand 6 states and 1918 transitions. [2022-11-16 12:05:56,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 366 transitions, 1022 flow [2022-11-16 12:05:56,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 366 transitions, 1022 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:05:56,651 INFO L231 Difference]: Finished difference. Result has 331 places, 337 transitions, 821 flow [2022-11-16 12:05:56,652 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=821, PETRI_PLACES=331, PETRI_TRANSITIONS=337} [2022-11-16 12:05:56,654 INFO L288 CegarLoopForPetriNet]: 313 programPoint places, 18 predicate places. [2022-11-16 12:05:56,655 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 337 transitions, 821 flow [2022-11-16 12:05:56,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 315.8) internal successors, (1579), 5 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:56,656 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:05:56,656 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:56,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:05:56,657 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:05:56,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:56,658 INFO L85 PathProgramCache]: Analyzing trace with hash -610252050, now seen corresponding path program 1 times [2022-11-16 12:05:56,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:56,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984040621] [2022-11-16 12:05:56,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:56,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:56,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:57,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:57,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:57,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984040621] [2022-11-16 12:05:57,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984040621] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:57,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:57,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:05:57,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791867627] [2022-11-16 12:05:57,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:57,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:05:57,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:57,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:05:57,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:05:57,278 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 352 [2022-11-16 12:05:57,281 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 337 transitions, 821 flow. Second operand has 9 states, 9 states have (on average 237.55555555555554) internal successors, (2138), 9 states have internal predecessors, (2138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:57,281 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:05:57,282 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 352 [2022-11-16 12:05:57,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:05:59,509 INFO L130 PetriNetUnfolder]: 2519/8145 cut-off events. [2022-11-16 12:05:59,509 INFO L131 PetriNetUnfolder]: For 2395/2395 co-relation queries the response was YES. [2022-11-16 12:05:59,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13288 conditions, 8145 events. 2519/8145 cut-off events. For 2395/2395 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 74329 event pairs, 1390 based on Foata normal form. 3/6757 useless extension candidates. Maximal degree in co-relation 13273. Up to 1575 conditions per place. [2022-11-16 12:05:59,625 INFO L137 encePairwiseOnDemand]: 335/352 looper letters, 128 selfloop transitions, 12 changer transitions 50/412 dead transitions. [2022-11-16 12:05:59,626 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 412 transitions, 1378 flow [2022-11-16 12:05:59,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:05:59,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:05:59,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2257 transitions. [2022-11-16 12:05:59,631 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7124368686868687 [2022-11-16 12:05:59,632 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2257 transitions. [2022-11-16 12:05:59,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2257 transitions. [2022-11-16 12:05:59,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:05:59,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2257 transitions. [2022-11-16 12:05:59,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 250.77777777777777) internal successors, (2257), 9 states have internal predecessors, (2257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:59,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 352.0) internal successors, (3520), 10 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:59,648 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 352.0) internal successors, (3520), 10 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:59,648 INFO L175 Difference]: Start difference. First operand has 331 places, 337 transitions, 821 flow. Second operand 9 states and 2257 transitions. [2022-11-16 12:05:59,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 412 transitions, 1378 flow [2022-11-16 12:05:59,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 412 transitions, 1366 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-11-16 12:05:59,667 INFO L231 Difference]: Finished difference. Result has 336 places, 322 transitions, 775 flow [2022-11-16 12:05:59,668 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=799, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=775, PETRI_PLACES=336, PETRI_TRANSITIONS=322} [2022-11-16 12:05:59,671 INFO L288 CegarLoopForPetriNet]: 313 programPoint places, 23 predicate places. [2022-11-16 12:05:59,671 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 322 transitions, 775 flow [2022-11-16 12:05:59,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 237.55555555555554) internal successors, (2138), 9 states have internal predecessors, (2138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:59,673 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:05:59,673 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:59,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:05:59,674 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:05:59,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:59,676 INFO L85 PathProgramCache]: Analyzing trace with hash -162167175, now seen corresponding path program 1 times [2022-11-16 12:05:59,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:59,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477266614] [2022-11-16 12:05:59,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:59,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:59,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:00,224 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:06:00,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:00,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477266614] [2022-11-16 12:06:00,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477266614] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:06:00,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468780105] [2022-11-16 12:06:00,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:00,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:06:00,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203b5f1b-4ef7-4ffb-9b3f-5bfb85b6f5c9/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:06:00,231 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203b5f1b-4ef7-4ffb-9b3f-5bfb85b6f5c9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:06:00,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203b5f1b-4ef7-4ffb-9b3f-5bfb85b6f5c9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:06:00,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:00,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:06:00,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:06:00,875 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:06:00,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:06:01,293 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:06:01,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468780105] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 12:06:01,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:06:01,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 18 [2022-11-16 12:06:01,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557183359] [2022-11-16 12:06:01,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:01,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:06:01,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:01,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:06:01,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:06:01,301 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 352 [2022-11-16 12:06:01,304 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 322 transitions, 775 flow. Second operand has 9 states, 9 states have (on average 266.6666666666667) internal successors, (2400), 9 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:01,305 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:06:01,305 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 352 [2022-11-16 12:06:01,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:06:07,240 INFO L130 PetriNetUnfolder]: 9276/26559 cut-off events. [2022-11-16 12:06:07,240 INFO L131 PetriNetUnfolder]: For 3146/3146 co-relation queries the response was YES. [2022-11-16 12:06:07,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42073 conditions, 26559 events. 9276/26559 cut-off events. For 3146/3146 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 293724 event pairs, 1582 based on Foata normal form. 0/22370 useless extension candidates. Maximal degree in co-relation 42057. Up to 3504 conditions per place. [2022-11-16 12:06:07,574 INFO L137 encePairwiseOnDemand]: 341/352 looper letters, 150 selfloop transitions, 17 changer transitions 0/411 dead transitions. [2022-11-16 12:06:07,575 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 411 transitions, 1352 flow [2022-11-16 12:06:07,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:06:07,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:06:07,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3029 transitions. [2022-11-16 12:06:07,583 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7822830578512396 [2022-11-16 12:06:07,583 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3029 transitions. [2022-11-16 12:06:07,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3029 transitions. [2022-11-16 12:06:07,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:06:07,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3029 transitions. [2022-11-16 12:06:07,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 275.3636363636364) internal successors, (3029), 11 states have internal predecessors, (3029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:07,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 352.0) internal successors, (4224), 12 states have internal predecessors, (4224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:07,604 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 352.0) internal successors, (4224), 12 states have internal predecessors, (4224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:07,604 INFO L175 Difference]: Start difference. First operand has 336 places, 322 transitions, 775 flow. Second operand 11 states and 3029 transitions. [2022-11-16 12:06:07,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 411 transitions, 1352 flow [2022-11-16 12:06:07,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 411 transitions, 1312 flow, removed 4 selfloop flow, removed 12 redundant places. [2022-11-16 12:06:07,625 INFO L231 Difference]: Finished difference. Result has 332 places, 334 transitions, 829 flow [2022-11-16 12:06:07,625 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=735, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=829, PETRI_PLACES=332, PETRI_TRANSITIONS=334} [2022-11-16 12:06:07,626 INFO L288 CegarLoopForPetriNet]: 313 programPoint places, 19 predicate places. [2022-11-16 12:06:07,626 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 334 transitions, 829 flow [2022-11-16 12:06:07,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 266.6666666666667) internal successors, (2400), 9 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:07,628 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:06:07,629 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:06:07,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203b5f1b-4ef7-4ffb-9b3f-5bfb85b6f5c9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:06:07,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203b5f1b-4ef7-4ffb-9b3f-5bfb85b6f5c9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:06:07,838 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:06:07,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:07,839 INFO L85 PathProgramCache]: Analyzing trace with hash 159324595, now seen corresponding path program 2 times [2022-11-16 12:06:07,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:07,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323249824] [2022-11-16 12:06:07,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:07,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:07,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:08,259 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:06:08,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:08,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323249824] [2022-11-16 12:06:08,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323249824] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:06:08,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283524725] [2022-11-16 12:06:08,261 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:06:08,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:06:08,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203b5f1b-4ef7-4ffb-9b3f-5bfb85b6f5c9/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:06:08,264 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203b5f1b-4ef7-4ffb-9b3f-5bfb85b6f5c9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:06:08,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203b5f1b-4ef7-4ffb-9b3f-5bfb85b6f5c9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:06:08,461 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:06:08,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:06:08,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:06:08,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:06:08,846 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 12:06:08,846 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:06:08,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283524725] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:06:08,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:06:08,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-11-16 12:06:08,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343768363] [2022-11-16 12:06:08,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:08,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:06:08,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:08,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:06:08,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:06:08,852 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 352 [2022-11-16 12:06:08,855 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 334 transitions, 829 flow. Second operand has 6 states, 6 states have (on average 266.6666666666667) internal successors, (1600), 6 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:08,856 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:06:08,856 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 352 [2022-11-16 12:06:08,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:06:12,073 INFO L130 PetriNetUnfolder]: 4032/14205 cut-off events. [2022-11-16 12:06:12,074 INFO L131 PetriNetUnfolder]: For 3781/3855 co-relation queries the response was YES. [2022-11-16 12:06:12,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23471 conditions, 14205 events. 4032/14205 cut-off events. For 3781/3855 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 148561 event pairs, 564 based on Foata normal form. 194/12570 useless extension candidates. Maximal degree in co-relation 23454. Up to 3788 conditions per place. [2022-11-16 12:06:12,232 INFO L137 encePairwiseOnDemand]: 343/352 looper letters, 78 selfloop transitions, 13 changer transitions 0/349 dead transitions. [2022-11-16 12:06:12,232 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 349 transitions, 1073 flow [2022-11-16 12:06:12,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:06:12,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 12:06:12,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2146 transitions. [2022-11-16 12:06:12,239 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7620738636363636 [2022-11-16 12:06:12,240 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2146 transitions. [2022-11-16 12:06:12,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2146 transitions. [2022-11-16 12:06:12,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:06:12,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2146 transitions. [2022-11-16 12:06:12,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 268.25) internal successors, (2146), 8 states have internal predecessors, (2146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:12,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 352.0) internal successors, (3168), 9 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:12,255 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 352.0) internal successors, (3168), 9 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:12,255 INFO L175 Difference]: Start difference. First operand has 332 places, 334 transitions, 829 flow. Second operand 8 states and 2146 transitions. [2022-11-16 12:06:12,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 349 transitions, 1073 flow [2022-11-16 12:06:12,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 349 transitions, 1066 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-11-16 12:06:12,282 INFO L231 Difference]: Finished difference. Result has 338 places, 337 transitions, 890 flow [2022-11-16 12:06:12,283 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=822, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=890, PETRI_PLACES=338, PETRI_TRANSITIONS=337} [2022-11-16 12:06:12,284 INFO L288 CegarLoopForPetriNet]: 313 programPoint places, 25 predicate places. [2022-11-16 12:06:12,284 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 337 transitions, 890 flow [2022-11-16 12:06:12,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 266.6666666666667) internal successors, (1600), 6 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:12,285 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:06:12,285 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:06:12,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203b5f1b-4ef7-4ffb-9b3f-5bfb85b6f5c9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:06:12,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203b5f1b-4ef7-4ffb-9b3f-5bfb85b6f5c9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-16 12:06:12,492 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:06:12,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:12,493 INFO L85 PathProgramCache]: Analyzing trace with hash -317413857, now seen corresponding path program 1 times [2022-11-16 12:06:12,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:12,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010625900] [2022-11-16 12:06:12,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:12,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:12,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:12,870 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:06:12,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:12,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010625900] [2022-11-16 12:06:12,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010625900] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:06:12,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328992365] [2022-11-16 12:06:12,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:12,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:06:12,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203b5f1b-4ef7-4ffb-9b3f-5bfb85b6f5c9/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:06:12,880 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203b5f1b-4ef7-4ffb-9b3f-5bfb85b6f5c9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:06:12,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203b5f1b-4ef7-4ffb-9b3f-5bfb85b6f5c9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:06:13,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:13,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:06:13,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:06:13,345 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:06:13,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:06:13,640 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:06:13,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328992365] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 12:06:13,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:06:13,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-11-16 12:06:13,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016841416] [2022-11-16 12:06:13,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:13,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:06:13,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:13,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:06:13,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:06:13,646 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 352 [2022-11-16 12:06:13,649 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 337 transitions, 890 flow. Second operand has 7 states, 7 states have (on average 278.42857142857144) internal successors, (1949), 7 states have internal predecessors, (1949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:13,649 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:06:13,650 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 352 [2022-11-16 12:06:13,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:06:15,995 INFO L130 PetriNetUnfolder]: 2116/9867 cut-off events. [2022-11-16 12:06:15,995 INFO L131 PetriNetUnfolder]: For 6162/7045 co-relation queries the response was YES. [2022-11-16 12:06:16,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17165 conditions, 9867 events. 2116/9867 cut-off events. For 6162/7045 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 103436 event pairs, 383 based on Foata normal form. 364/9288 useless extension candidates. Maximal degree in co-relation 17146. Up to 1814 conditions per place. [2022-11-16 12:06:16,273 INFO L137 encePairwiseOnDemand]: 344/352 looper letters, 82 selfloop transitions, 8 changer transitions 0/352 dead transitions. [2022-11-16 12:06:16,274 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 352 transitions, 1156 flow [2022-11-16 12:06:16,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:06:16,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:06:16,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1979 transitions. [2022-11-16 12:06:16,282 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8031655844155844 [2022-11-16 12:06:16,283 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1979 transitions. [2022-11-16 12:06:16,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1979 transitions. [2022-11-16 12:06:16,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:06:16,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1979 transitions. [2022-11-16 12:06:16,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 282.7142857142857) internal successors, (1979), 7 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:16,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 352.0) internal successors, (2816), 8 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:16,293 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 352.0) internal successors, (2816), 8 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:16,294 INFO L175 Difference]: Start difference. First operand has 338 places, 337 transitions, 890 flow. Second operand 7 states and 1979 transitions. [2022-11-16 12:06:16,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 352 transitions, 1156 flow [2022-11-16 12:06:16,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 352 transitions, 1134 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-11-16 12:06:16,322 INFO L231 Difference]: Finished difference. Result has 341 places, 338 transitions, 904 flow [2022-11-16 12:06:16,323 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=873, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=904, PETRI_PLACES=341, PETRI_TRANSITIONS=338} [2022-11-16 12:06:16,325 INFO L288 CegarLoopForPetriNet]: 313 programPoint places, 28 predicate places. [2022-11-16 12:06:16,325 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 338 transitions, 904 flow [2022-11-16 12:06:16,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.42857142857144) internal successors, (1949), 7 states have internal predecessors, (1949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:16,326 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:06:16,327 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:06:16,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203b5f1b-4ef7-4ffb-9b3f-5bfb85b6f5c9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:06:16,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203b5f1b-4ef7-4ffb-9b3f-5bfb85b6f5c9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:06:16,532 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:06:16,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:16,533 INFO L85 PathProgramCache]: Analyzing trace with hash 755052754, now seen corresponding path program 1 times [2022-11-16 12:06:16,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:16,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295529682] [2022-11-16 12:06:16,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:16,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:16,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:16,777 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:06:16,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:16,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295529682] [2022-11-16 12:06:16,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295529682] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:06:16,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:06:16,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:06:16,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612027795] [2022-11-16 12:06:16,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:16,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:06:16,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:16,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:06:16,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:06:16,785 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 352 [2022-11-16 12:06:16,786 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 338 transitions, 904 flow. Second operand has 5 states, 5 states have (on average 316.0) internal successors, (1580), 5 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:16,787 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:06:16,787 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 352 [2022-11-16 12:06:16,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:06:19,598 INFO L130 PetriNetUnfolder]: 2218/12015 cut-off events. [2022-11-16 12:06:19,598 INFO L131 PetriNetUnfolder]: For 2760/3178 co-relation queries the response was YES. [2022-11-16 12:06:19,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19065 conditions, 12015 events. 2218/12015 cut-off events. For 2760/3178 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 134400 event pairs, 572 based on Foata normal form. 84/10904 useless extension candidates. Maximal degree in co-relation 19044. Up to 1321 conditions per place. [2022-11-16 12:06:19,690 INFO L137 encePairwiseOnDemand]: 347/352 looper letters, 47 selfloop transitions, 4 changer transitions 0/366 dead transitions. [2022-11-16 12:06:19,691 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 366 transitions, 1110 flow [2022-11-16 12:06:19,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:06:19,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:06:19,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1918 transitions. [2022-11-16 12:06:19,696 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9081439393939394 [2022-11-16 12:06:19,696 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1918 transitions. [2022-11-16 12:06:19,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1918 transitions. [2022-11-16 12:06:19,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:06:19,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1918 transitions. [2022-11-16 12:06:19,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 319.6666666666667) internal successors, (1918), 6 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:19,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 352.0) internal successors, (2464), 7 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:19,707 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 352.0) internal successors, (2464), 7 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:19,707 INFO L175 Difference]: Start difference. First operand has 341 places, 338 transitions, 904 flow. Second operand 6 states and 1918 transitions. [2022-11-16 12:06:19,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 366 transitions, 1110 flow [2022-11-16 12:06:19,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 366 transitions, 1094 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-16 12:06:19,742 INFO L231 Difference]: Finished difference. Result has 344 places, 341 transitions, 917 flow [2022-11-16 12:06:19,742 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=888, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=917, PETRI_PLACES=344, PETRI_TRANSITIONS=341} [2022-11-16 12:06:19,743 INFO L288 CegarLoopForPetriNet]: 313 programPoint places, 31 predicate places. [2022-11-16 12:06:19,743 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 341 transitions, 917 flow [2022-11-16 12:06:19,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 316.0) internal successors, (1580), 5 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:19,744 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:06:19,744 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:06:19,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:06:19,745 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:06:19,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:19,745 INFO L85 PathProgramCache]: Analyzing trace with hash 775088213, now seen corresponding path program 1 times [2022-11-16 12:06:19,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:19,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255172158] [2022-11-16 12:06:19,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:19,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:19,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:19,879 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 12:06:19,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:19,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255172158] [2022-11-16 12:06:19,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255172158] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:06:19,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:06:19,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:06:19,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942490305] [2022-11-16 12:06:19,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:19,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:06:19,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:19,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:06:19,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:06:19,884 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 352 [2022-11-16 12:06:19,885 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 341 transitions, 917 flow. Second operand has 4 states, 4 states have (on average 316.0) internal successors, (1264), 4 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:19,885 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:06:19,885 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 352 [2022-11-16 12:06:19,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:06:22,868 INFO L130 PetriNetUnfolder]: 2508/14663 cut-off events. [2022-11-16 12:06:22,868 INFO L131 PetriNetUnfolder]: For 3804/4222 co-relation queries the response was YES. [2022-11-16 12:06:22,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23726 conditions, 14663 events. 2508/14663 cut-off events. For 3804/4222 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 172118 event pairs, 638 based on Foata normal form. 146/13488 useless extension candidates. Maximal degree in co-relation 23703. Up to 1457 conditions per place. [2022-11-16 12:06:22,997 INFO L137 encePairwiseOnDemand]: 348/352 looper letters, 43 selfloop transitions, 3 changer transitions 0/362 dead transitions. [2022-11-16 12:06:22,997 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 362 transitions, 1095 flow [2022-11-16 12:06:22,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:06:22,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:06:23,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1597 transitions. [2022-11-16 12:06:23,002 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9073863636363636 [2022-11-16 12:06:23,002 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1597 transitions. [2022-11-16 12:06:23,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1597 transitions. [2022-11-16 12:06:23,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:06:23,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1597 transitions. [2022-11-16 12:06:23,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 319.4) internal successors, (1597), 5 states have internal predecessors, (1597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:23,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 352.0) internal successors, (2112), 6 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:23,011 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 352.0) internal successors, (2112), 6 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:23,011 INFO L175 Difference]: Start difference. First operand has 344 places, 341 transitions, 917 flow. Second operand 5 states and 1597 transitions. [2022-11-16 12:06:23,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 362 transitions, 1095 flow [2022-11-16 12:06:23,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 362 transitions, 1095 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:06:23,047 INFO L231 Difference]: Finished difference. Result has 351 places, 343 transitions, 942 flow [2022-11-16 12:06:23,048 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=917, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=942, PETRI_PLACES=351, PETRI_TRANSITIONS=343} [2022-11-16 12:06:23,048 INFO L288 CegarLoopForPetriNet]: 313 programPoint places, 38 predicate places. [2022-11-16 12:06:23,048 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 343 transitions, 942 flow [2022-11-16 12:06:23,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 316.0) internal successors, (1264), 4 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:23,049 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:06:23,049 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:06:23,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:06:23,050 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:06:23,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:23,050 INFO L85 PathProgramCache]: Analyzing trace with hash -360617222, now seen corresponding path program 1 times [2022-11-16 12:06:23,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:23,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963467025] [2022-11-16 12:06:23,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:23,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:23,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:23,194 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:06:23,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:23,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963467025] [2022-11-16 12:06:23,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963467025] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:06:23,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:06:23,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:06:23,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038553017] [2022-11-16 12:06:23,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:23,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:06:23,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:23,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:06:23,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:06:23,198 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 352 [2022-11-16 12:06:23,200 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 343 transitions, 942 flow. Second operand has 4 states, 4 states have (on average 316.0) internal successors, (1264), 4 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:23,200 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:06:23,200 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 352 [2022-11-16 12:06:23,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:06:26,877 INFO L130 PetriNetUnfolder]: 2590/15767 cut-off events. [2022-11-16 12:06:26,878 INFO L131 PetriNetUnfolder]: For 4276/4546 co-relation queries the response was YES. [2022-11-16 12:06:27,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25945 conditions, 15767 events. 2590/15767 cut-off events. For 4276/4546 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 189331 event pairs, 714 based on Foata normal form. 128/14547 useless extension candidates. Maximal degree in co-relation 25919. Up to 1457 conditions per place. [2022-11-16 12:06:27,274 INFO L137 encePairwiseOnDemand]: 348/352 looper letters, 43 selfloop transitions, 3 changer transitions 0/364 dead transitions. [2022-11-16 12:06:27,274 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 364 transitions, 1120 flow [2022-11-16 12:06:27,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:06:27,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:06:27,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1597 transitions. [2022-11-16 12:06:27,278 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9073863636363636 [2022-11-16 12:06:27,278 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1597 transitions. [2022-11-16 12:06:27,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1597 transitions. [2022-11-16 12:06:27,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:06:27,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1597 transitions. [2022-11-16 12:06:27,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 319.4) internal successors, (1597), 5 states have internal predecessors, (1597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:27,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 352.0) internal successors, (2112), 6 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:27,287 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 352.0) internal successors, (2112), 6 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:27,288 INFO L175 Difference]: Start difference. First operand has 351 places, 343 transitions, 942 flow. Second operand 5 states and 1597 transitions. [2022-11-16 12:06:27,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 364 transitions, 1120 flow [2022-11-16 12:06:27,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 364 transitions, 1120 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:06:27,336 INFO L231 Difference]: Finished difference. Result has 358 places, 345 transitions, 967 flow [2022-11-16 12:06:27,336 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=942, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=967, PETRI_PLACES=358, PETRI_TRANSITIONS=345} [2022-11-16 12:06:27,336 INFO L288 CegarLoopForPetriNet]: 313 programPoint places, 45 predicate places. [2022-11-16 12:06:27,337 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 345 transitions, 967 flow [2022-11-16 12:06:27,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 316.0) internal successors, (1264), 4 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:27,337 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:06:27,337 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:06:27,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:06:27,338 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:06:27,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:27,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1147359979, now seen corresponding path program 1 times [2022-11-16 12:06:27,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:27,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320144627] [2022-11-16 12:06:27,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:27,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:27,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:28,585 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 12:06:28,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:28,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320144627] [2022-11-16 12:06:28,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320144627] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:06:28,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:06:28,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-16 12:06:28,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048244612] [2022-11-16 12:06:28,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:28,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:06:28,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:28,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:06:28,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:06:28,592 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 352 [2022-11-16 12:06:28,596 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 345 transitions, 967 flow. Second operand has 18 states, 18 states have (on average 240.72222222222223) internal successors, (4333), 18 states have internal predecessors, (4333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:28,596 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:06:28,596 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 352 [2022-11-16 12:06:28,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand