./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/security.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_aa46e7fa-9c32-47f4-adf5-425be1515a6e/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa46e7fa-9c32-47f4-adf5-425be1515a6e/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_aa46e7fa-9c32-47f4-adf5-425be1515a6e/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa46e7fa-9c32-47f4-adf5-425be1515a6e/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/security.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa46e7fa-9c32-47f4-adf5-425be1515a6e/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_aa46e7fa-9c32-47f4-adf5-425be1515a6e/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 417dec4be084b2867b601c43d125afd61f7d3912bd17641ca10c0f094ab6abe0 --- 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 11:54:55,877 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:54:55,880 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:54:55,900 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:54:55,901 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:54:55,902 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:54:55,903 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:54:55,905 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:54:55,907 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:54:55,908 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:54:55,909 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:54:55,911 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:54:55,911 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:54:55,912 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:54:55,914 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:54:55,915 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:54:55,916 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:54:55,917 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:54:55,919 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:54:55,922 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:54:55,924 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:54:55,925 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:54:55,927 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:54:55,928 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:54:55,932 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:54:55,933 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:54:55,933 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:54:55,934 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:54:55,935 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:54:55,936 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:54:55,937 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:54:55,938 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:54:55,939 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:54:55,940 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:54:55,941 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:54:55,942 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:54:55,943 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:54:55,943 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:54:55,943 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:54:55,945 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:54:55,946 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:54:55,955 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa46e7fa-9c32-47f4-adf5-425be1515a6e/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 11:54:55,981 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:54:55,981 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:54:55,981 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:54:55,982 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:54:55,982 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:54:55,982 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:54:55,983 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:54:55,983 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:54:55,984 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:54:55,984 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:54:55,984 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:54:55,984 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:54:55,985 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:54:55,985 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:54:55,985 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:54:55,985 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:54:55,985 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:54:55,986 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:54:55,986 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:54:55,986 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:54:55,986 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:54:55,986 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:54:55,987 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:54:55,987 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:54:55,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:54:55,987 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:54:55,987 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:54:55,988 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:54:55,988 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:54:55,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:54:55,988 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:54:55,989 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:54:55,989 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:54:55,989 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_aa46e7fa-9c32-47f4-adf5-425be1515a6e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa46e7fa-9c32-47f4-adf5-425be1515a6e/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 417dec4be084b2867b601c43d125afd61f7d3912bd17641ca10c0f094ab6abe0 [2022-11-16 11:54:56,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:54:56,296 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:54:56,301 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:54:56,302 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:54:56,303 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:54:56,305 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa46e7fa-9c32-47f4-adf5-425be1515a6e/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/security.wvr.c [2022-11-16 11:54:56,387 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa46e7fa-9c32-47f4-adf5-425be1515a6e/bin/uautomizer-tPACEb0tL8/data/9f92b5c1a/7bb988d4e27641778e4c74f4b1fe3a24/FLAG3e8d33d2a [2022-11-16 11:54:56,936 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:54:56,936 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa46e7fa-9c32-47f4-adf5-425be1515a6e/sv-benchmarks/c/weaver/security.wvr.c [2022-11-16 11:54:56,943 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa46e7fa-9c32-47f4-adf5-425be1515a6e/bin/uautomizer-tPACEb0tL8/data/9f92b5c1a/7bb988d4e27641778e4c74f4b1fe3a24/FLAG3e8d33d2a [2022-11-16 11:54:57,301 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa46e7fa-9c32-47f4-adf5-425be1515a6e/bin/uautomizer-tPACEb0tL8/data/9f92b5c1a/7bb988d4e27641778e4c74f4b1fe3a24 [2022-11-16 11:54:57,303 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:54:57,304 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:54:57,305 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:54:57,306 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:54:57,317 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:54:57,318 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:54:57" (1/1) ... [2022-11-16 11:54:57,320 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9bc738b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:57, skipping insertion in model container [2022-11-16 11:54:57,320 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:54:57" (1/1) ... [2022-11-16 11:54:57,330 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:54:57,352 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:54:57,629 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_aa46e7fa-9c32-47f4-adf5-425be1515a6e/sv-benchmarks/c/weaver/security.wvr.c[1931,1944] [2022-11-16 11:54:57,632 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:54:57,642 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:54:57,677 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_aa46e7fa-9c32-47f4-adf5-425be1515a6e/sv-benchmarks/c/weaver/security.wvr.c[1931,1944] [2022-11-16 11:54:57,683 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:54:57,700 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:54:57,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:57 WrapperNode [2022-11-16 11:54:57,701 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:54:57,703 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:54:57,703 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:54:57,704 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:54:57,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:57" (1/1) ... [2022-11-16 11:54:57,721 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:57" (1/1) ... [2022-11-16 11:54:57,747 INFO L138 Inliner]: procedures = 21, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 53 [2022-11-16 11:54:57,747 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:54:57,748 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:54:57,749 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:54:57,749 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:54:57,758 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:57" (1/1) ... [2022-11-16 11:54:57,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:57" (1/1) ... [2022-11-16 11:54:57,770 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:57" (1/1) ... [2022-11-16 11:54:57,771 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:57" (1/1) ... [2022-11-16 11:54:57,780 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:57" (1/1) ... [2022-11-16 11:54:57,788 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:57" (1/1) ... [2022-11-16 11:54:57,789 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:57" (1/1) ... [2022-11-16 11:54:57,790 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:57" (1/1) ... [2022-11-16 11:54:57,793 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:54:57,798 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:54:57,798 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:54:57,798 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:54:57,800 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:57" (1/1) ... [2022-11-16 11:54:57,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:54:57,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa46e7fa-9c32-47f4-adf5-425be1515a6e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:54:57,837 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa46e7fa-9c32-47f4-adf5-425be1515a6e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:54:57,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa46e7fa-9c32-47f4-adf5-425be1515a6e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:54:57,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:54:57,886 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 11:54:57,886 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 11:54:57,886 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 11:54:57,886 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 11:54:57,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:54:57,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:54:57,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:54:57,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:54:57,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:54:57,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:54:57,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:54:57,890 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 11:54:58,023 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:54:58,026 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:54:58,218 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:54:58,224 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:54:58,225 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 11:54:58,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:54:58 BoogieIcfgContainer [2022-11-16 11:54:58,227 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:54:58,229 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:54:58,230 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:54:58,234 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:54:58,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:54:57" (1/3) ... [2022-11-16 11:54:58,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dbc7004 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:54:58, skipping insertion in model container [2022-11-16 11:54:58,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:57" (2/3) ... [2022-11-16 11:54:58,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dbc7004 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:54:58, skipping insertion in model container [2022-11-16 11:54:58,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:54:58" (3/3) ... [2022-11-16 11:54:58,237 INFO L112 eAbstractionObserver]: Analyzing ICFG security.wvr.c [2022-11-16 11:54:58,245 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:54:58,256 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:54:58,256 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:54:58,257 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:54:58,315 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 11:54:58,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 81 transitions, 178 flow [2022-11-16 11:54:58,402 INFO L130 PetriNetUnfolder]: 3/79 cut-off events. [2022-11-16 11:54:58,403 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 11:54:58,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 79 events. 3/79 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2022-11-16 11:54:58,408 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 81 transitions, 178 flow [2022-11-16 11:54:58,412 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 70 transitions, 152 flow [2022-11-16 11:54:58,423 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:54:58,435 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;@680e3a6d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:54:58,435 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-16 11:54:58,481 INFO L130 PetriNetUnfolder]: 3/69 cut-off events. [2022-11-16 11:54:58,481 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 11:54:58,481 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:54:58,482 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] [2022-11-16 11:54:58,483 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:54:58,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:58,495 INFO L85 PathProgramCache]: Analyzing trace with hash 860856618, now seen corresponding path program 1 times [2022-11-16 11:54:58,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:58,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903114056] [2022-11-16 11:54:58,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:58,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:58,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:59,725 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 11:54:59,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:59,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903114056] [2022-11-16 11:54:59,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903114056] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:54:59,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:54:59,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 11:54:59,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82544089] [2022-11-16 11:54:59,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:54:59,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:54:59,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:59,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:54:59,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:54:59,792 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 81 [2022-11-16 11:54:59,796 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 70 transitions, 152 flow. Second operand has 8 states, 8 states have (on average 60.25) internal successors, (482), 8 states have internal predecessors, (482), 0 states have call successors, (0), 0 states 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 11:54:59,796 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:54:59,796 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 81 [2022-11-16 11:54:59,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:00,129 INFO L130 PetriNetUnfolder]: 19/146 cut-off events. [2022-11-16 11:55:00,130 INFO L131 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2022-11-16 11:55:00,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 146 events. 19/146 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 384 event pairs, 8 based on Foata normal form. 3/143 useless extension candidates. Maximal degree in co-relation 123. Up to 39 conditions per place. [2022-11-16 11:55:00,133 INFO L137 encePairwiseOnDemand]: 72/81 looper letters, 31 selfloop transitions, 2 changer transitions 10/91 dead transitions. [2022-11-16 11:55:00,133 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 91 transitions, 295 flow [2022-11-16 11:55:00,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:55:00,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 11:55:00,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 627 transitions. [2022-11-16 11:55:00,151 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.774074074074074 [2022-11-16 11:55:00,152 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 627 transitions. [2022-11-16 11:55:00,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 627 transitions. [2022-11-16 11:55:00,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:00,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 627 transitions. [2022-11-16 11:55:00,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 62.7) internal successors, (627), 10 states have internal predecessors, (627), 0 states have call successors, (0), 0 states 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 11:55:00,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states 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 11:55:00,177 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states 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 11:55:00,186 INFO L175 Difference]: Start difference. First operand has 74 places, 70 transitions, 152 flow. Second operand 10 states and 627 transitions. [2022-11-16 11:55:00,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 91 transitions, 295 flow [2022-11-16 11:55:00,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 91 transitions, 277 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:55:00,199 INFO L231 Difference]: Finished difference. Result has 85 places, 69 transitions, 161 flow [2022-11-16 11:55:00,201 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=161, PETRI_PLACES=85, PETRI_TRANSITIONS=69} [2022-11-16 11:55:00,205 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 11 predicate places. [2022-11-16 11:55:00,205 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 69 transitions, 161 flow [2022-11-16 11:55:00,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 60.25) internal successors, (482), 8 states have internal predecessors, (482), 0 states have call successors, (0), 0 states 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 11:55:00,206 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:00,206 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] [2022-11-16 11:55:00,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:55:00,207 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:55:00,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:00,208 INFO L85 PathProgramCache]: Analyzing trace with hash -867903371, now seen corresponding path program 1 times [2022-11-16 11:55:00,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:00,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565919342] [2022-11-16 11:55:00,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:00,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:00,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:00,696 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 11:55:00,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:00,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565919342] [2022-11-16 11:55:00,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565919342] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:00,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:00,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 11:55:00,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120815644] [2022-11-16 11:55:00,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:00,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:55:00,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:00,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:55:00,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:55:00,709 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-11-16 11:55:00,710 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 69 transitions, 161 flow. Second operand has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 11:55:00,711 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:00,712 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-11-16 11:55:00,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:01,086 INFO L130 PetriNetUnfolder]: 23/217 cut-off events. [2022-11-16 11:55:01,091 INFO L131 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2022-11-16 11:55:01,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 389 conditions, 217 events. 23/217 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 898 event pairs, 2 based on Foata normal form. 2/213 useless extension candidates. Maximal degree in co-relation 360. Up to 38 conditions per place. [2022-11-16 11:55:01,096 INFO L137 encePairwiseOnDemand]: 72/81 looper letters, 35 selfloop transitions, 5 changer transitions 7/93 dead transitions. [2022-11-16 11:55:01,096 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 93 transitions, 341 flow [2022-11-16 11:55:01,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:55:01,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:55:01,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 549 transitions. [2022-11-16 11:55:01,101 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7530864197530864 [2022-11-16 11:55:01,102 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 549 transitions. [2022-11-16 11:55:01,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 549 transitions. [2022-11-16 11:55:01,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:01,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 549 transitions. [2022-11-16 11:55:01,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 61.0) internal successors, (549), 9 states have internal predecessors, (549), 0 states have call successors, (0), 0 states 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 11:55:01,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states 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 11:55:01,110 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states 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 11:55:01,110 INFO L175 Difference]: Start difference. First operand has 85 places, 69 transitions, 161 flow. Second operand 9 states and 549 transitions. [2022-11-16 11:55:01,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 93 transitions, 341 flow [2022-11-16 11:55:01,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 93 transitions, 316 flow, removed 12 selfloop flow, removed 5 redundant places. [2022-11-16 11:55:01,118 INFO L231 Difference]: Finished difference. Result has 87 places, 71 transitions, 188 flow [2022-11-16 11:55:01,119 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=188, PETRI_PLACES=87, PETRI_TRANSITIONS=71} [2022-11-16 11:55:01,121 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 13 predicate places. [2022-11-16 11:55:01,121 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 71 transitions, 188 flow [2022-11-16 11:55:01,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 11:55:01,122 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:01,122 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] [2022-11-16 11:55:01,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:55:01,123 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:55:01,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:01,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1109321805, now seen corresponding path program 2 times [2022-11-16 11:55:01,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:01,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671783464] [2022-11-16 11:55:01,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:01,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:01,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:01,548 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 11:55:01,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:01,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671783464] [2022-11-16 11:55:01,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671783464] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:01,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:01,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 11:55:01,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836313486] [2022-11-16 11:55:01,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:01,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:55:01,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:01,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:55:01,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:55:01,556 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-11-16 11:55:01,556 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 71 transitions, 188 flow. Second operand has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 11:55:01,557 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:01,557 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-11-16 11:55:01,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:01,970 INFO L130 PetriNetUnfolder]: 34/322 cut-off events. [2022-11-16 11:55:01,971 INFO L131 PetriNetUnfolder]: For 194/194 co-relation queries the response was YES. [2022-11-16 11:55:01,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 646 conditions, 322 events. 34/322 cut-off events. For 194/194 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1814 event pairs, 17 based on Foata normal form. 3/317 useless extension candidates. Maximal degree in co-relation 605. Up to 62 conditions per place. [2022-11-16 11:55:01,973 INFO L137 encePairwiseOnDemand]: 72/81 looper letters, 37 selfloop transitions, 4 changer transitions 21/108 dead transitions. [2022-11-16 11:55:01,973 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 108 transitions, 477 flow [2022-11-16 11:55:01,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 11:55:01,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 11:55:01,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 786 transitions. [2022-11-16 11:55:01,976 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7464387464387464 [2022-11-16 11:55:01,976 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 786 transitions. [2022-11-16 11:55:01,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 786 transitions. [2022-11-16 11:55:01,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:01,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 786 transitions. [2022-11-16 11:55:01,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 60.46153846153846) internal successors, (786), 13 states have internal predecessors, (786), 0 states have call successors, (0), 0 states 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 11:55:01,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 81.0) internal successors, (1134), 14 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states 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 11:55:01,982 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 81.0) internal successors, (1134), 14 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states 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 11:55:01,982 INFO L175 Difference]: Start difference. First operand has 87 places, 71 transitions, 188 flow. Second operand 13 states and 786 transitions. [2022-11-16 11:55:01,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 108 transitions, 477 flow [2022-11-16 11:55:01,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 108 transitions, 443 flow, removed 10 selfloop flow, removed 5 redundant places. [2022-11-16 11:55:01,987 INFO L231 Difference]: Finished difference. Result has 102 places, 72 transitions, 224 flow [2022-11-16 11:55:01,987 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=224, PETRI_PLACES=102, PETRI_TRANSITIONS=72} [2022-11-16 11:55:01,988 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 28 predicate places. [2022-11-16 11:55:01,988 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 72 transitions, 224 flow [2022-11-16 11:55:01,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 11:55:01,989 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:01,989 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] [2022-11-16 11:55:01,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:55:01,990 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:55:01,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:01,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1418264184, now seen corresponding path program 2 times [2022-11-16 11:55:01,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:01,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40670211] [2022-11-16 11:55:01,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:01,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:02,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:02,258 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 11:55:02,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:02,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40670211] [2022-11-16 11:55:02,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40670211] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:02,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:02,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 11:55:02,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566490168] [2022-11-16 11:55:02,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:02,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:55:02,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:02,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:55:02,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:55:02,261 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 81 [2022-11-16 11:55:02,262 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 72 transitions, 224 flow. Second operand has 8 states, 8 states have (on average 60.25) internal successors, (482), 8 states have internal predecessors, (482), 0 states have call successors, (0), 0 states 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 11:55:02,262 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:02,262 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 81 [2022-11-16 11:55:02,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:02,489 INFO L130 PetriNetUnfolder]: 22/264 cut-off events. [2022-11-16 11:55:02,489 INFO L131 PetriNetUnfolder]: For 371/375 co-relation queries the response was YES. [2022-11-16 11:55:02,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 613 conditions, 264 events. 22/264 cut-off events. For 371/375 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1329 event pairs, 18 based on Foata normal form. 1/258 useless extension candidates. Maximal degree in co-relation 558. Up to 54 conditions per place. [2022-11-16 11:55:02,491 INFO L137 encePairwiseOnDemand]: 74/81 looper letters, 40 selfloop transitions, 4 changer transitions 6/98 dead transitions. [2022-11-16 11:55:02,491 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 98 transitions, 466 flow [2022-11-16 11:55:02,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:55:02,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:55:02,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 511 transitions. [2022-11-16 11:55:02,493 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7885802469135802 [2022-11-16 11:55:02,493 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 511 transitions. [2022-11-16 11:55:02,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 511 transitions. [2022-11-16 11:55:02,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:02,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 511 transitions. [2022-11-16 11:55:02,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 63.875) internal successors, (511), 8 states have internal predecessors, (511), 0 states have call successors, (0), 0 states 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 11:55:02,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 81.0) internal successors, (729), 9 states have internal predecessors, (729), 0 states have call successors, (0), 0 states 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 11:55:02,497 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 81.0) internal successors, (729), 9 states have internal predecessors, (729), 0 states have call successors, (0), 0 states 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 11:55:02,497 INFO L175 Difference]: Start difference. First operand has 102 places, 72 transitions, 224 flow. Second operand 8 states and 511 transitions. [2022-11-16 11:55:02,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 98 transitions, 466 flow [2022-11-16 11:55:02,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 98 transitions, 394 flow, removed 35 selfloop flow, removed 10 redundant places. [2022-11-16 11:55:02,502 INFO L231 Difference]: Finished difference. Result has 96 places, 74 transitions, 240 flow [2022-11-16 11:55:02,502 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=240, PETRI_PLACES=96, PETRI_TRANSITIONS=74} [2022-11-16 11:55:02,503 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 22 predicate places. [2022-11-16 11:55:02,503 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 74 transitions, 240 flow [2022-11-16 11:55:02,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 60.25) internal successors, (482), 8 states have internal predecessors, (482), 0 states have call successors, (0), 0 states 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 11:55:02,504 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:02,504 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] [2022-11-16 11:55:02,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:55:02,505 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:55:02,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:02,505 INFO L85 PathProgramCache]: Analyzing trace with hash 2131364533, now seen corresponding path program 3 times [2022-11-16 11:55:02,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:02,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448406630] [2022-11-16 11:55:02,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:02,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:02,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:02,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:55:02,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:02,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448406630] [2022-11-16 11:55:02,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448406630] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:02,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:02,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 11:55:02,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036969297] [2022-11-16 11:55:02,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:02,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:55:02,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:02,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:55:02,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:55:02,776 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-11-16 11:55:02,777 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 74 transitions, 240 flow. Second operand has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 11:55:02,777 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:02,777 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-11-16 11:55:02,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:03,042 INFO L130 PetriNetUnfolder]: 29/354 cut-off events. [2022-11-16 11:55:03,042 INFO L131 PetriNetUnfolder]: For 397/398 co-relation queries the response was YES. [2022-11-16 11:55:03,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 775 conditions, 354 events. 29/354 cut-off events. For 397/398 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2152 event pairs, 9 based on Foata normal form. 2/346 useless extension candidates. Maximal degree in co-relation 719. Up to 75 conditions per place. [2022-11-16 11:55:03,045 INFO L137 encePairwiseOnDemand]: 72/81 looper letters, 51 selfloop transitions, 5 changer transitions 10/112 dead transitions. [2022-11-16 11:55:03,045 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 112 transitions, 566 flow [2022-11-16 11:55:03,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:55:03,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:55:03,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 561 transitions. [2022-11-16 11:55:03,047 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7695473251028807 [2022-11-16 11:55:03,047 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 561 transitions. [2022-11-16 11:55:03,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 561 transitions. [2022-11-16 11:55:03,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:03,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 561 transitions. [2022-11-16 11:55:03,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 62.333333333333336) internal successors, (561), 9 states have internal predecessors, (561), 0 states have call successors, (0), 0 states 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 11:55:03,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states 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 11:55:03,050 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states 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 11:55:03,068 INFO L175 Difference]: Start difference. First operand has 96 places, 74 transitions, 240 flow. Second operand 9 states and 561 transitions. [2022-11-16 11:55:03,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 112 transitions, 566 flow [2022-11-16 11:55:03,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 112 transitions, 529 flow, removed 17 selfloop flow, removed 4 redundant places. [2022-11-16 11:55:03,074 INFO L231 Difference]: Finished difference. Result has 104 places, 77 transitions, 291 flow [2022-11-16 11:55:03,074 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=291, PETRI_PLACES=104, PETRI_TRANSITIONS=77} [2022-11-16 11:55:03,075 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 30 predicate places. [2022-11-16 11:55:03,075 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 77 transitions, 291 flow [2022-11-16 11:55:03,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 11:55:03,076 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:03,076 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] [2022-11-16 11:55:03,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:55:03,076 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:55:03,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:03,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1433889044, now seen corresponding path program 3 times [2022-11-16 11:55:03,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:03,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855695907] [2022-11-16 11:55:03,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:03,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:03,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:03,350 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 11:55:03,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:03,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855695907] [2022-11-16 11:55:03,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855695907] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:03,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:03,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 11:55:03,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287493436] [2022-11-16 11:55:03,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:03,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:55:03,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:03,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:55:03,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:55:03,354 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 81 [2022-11-16 11:55:03,354 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 77 transitions, 291 flow. Second operand has 8 states, 8 states have (on average 60.25) internal successors, (482), 8 states have internal predecessors, (482), 0 states have call successors, (0), 0 states 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 11:55:03,355 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:03,355 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 81 [2022-11-16 11:55:03,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:03,562 INFO L130 PetriNetUnfolder]: 24/305 cut-off events. [2022-11-16 11:55:03,562 INFO L131 PetriNetUnfolder]: For 494/498 co-relation queries the response was YES. [2022-11-16 11:55:03,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 713 conditions, 305 events. 24/305 cut-off events. For 494/498 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1693 event pairs, 20 based on Foata normal form. 1/298 useless extension candidates. Maximal degree in co-relation 658. Up to 72 conditions per place. [2022-11-16 11:55:03,565 INFO L137 encePairwiseOnDemand]: 74/81 looper letters, 34 selfloop transitions, 3 changer transitions 10/95 dead transitions. [2022-11-16 11:55:03,565 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 95 transitions, 475 flow [2022-11-16 11:55:03,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:55:03,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:55:03,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 505 transitions. [2022-11-16 11:55:03,567 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.779320987654321 [2022-11-16 11:55:03,567 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 505 transitions. [2022-11-16 11:55:03,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 505 transitions. [2022-11-16 11:55:03,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:03,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 505 transitions. [2022-11-16 11:55:03,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 63.125) internal successors, (505), 8 states have internal predecessors, (505), 0 states have call successors, (0), 0 states 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 11:55:03,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 81.0) internal successors, (729), 9 states have internal predecessors, (729), 0 states have call successors, (0), 0 states 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 11:55:03,571 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 81.0) internal successors, (729), 9 states have internal predecessors, (729), 0 states have call successors, (0), 0 states 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 11:55:03,571 INFO L175 Difference]: Start difference. First operand has 104 places, 77 transitions, 291 flow. Second operand 8 states and 505 transitions. [2022-11-16 11:55:03,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 95 transitions, 475 flow [2022-11-16 11:55:03,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 95 transitions, 450 flow, removed 12 selfloop flow, removed 4 redundant places. [2022-11-16 11:55:03,576 INFO L231 Difference]: Finished difference. Result has 108 places, 75 transitions, 268 flow [2022-11-16 11:55:03,576 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=268, PETRI_PLACES=108, PETRI_TRANSITIONS=75} [2022-11-16 11:55:03,577 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 34 predicate places. [2022-11-16 11:55:03,577 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 75 transitions, 268 flow [2022-11-16 11:55:03,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 60.25) internal successors, (482), 8 states have internal predecessors, (482), 0 states have call successors, (0), 0 states 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 11:55:03,578 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:03,578 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] [2022-11-16 11:55:03,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:55:03,578 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:55:03,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:03,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1997778903, now seen corresponding path program 4 times [2022-11-16 11:55:03,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:03,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667466102] [2022-11-16 11:55:03,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:03,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:03,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:03,838 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 11:55:03,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:03,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667466102] [2022-11-16 11:55:03,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667466102] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:03,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:03,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 11:55:03,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247469854] [2022-11-16 11:55:03,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:03,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:55:03,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:03,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:55:03,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:55:03,841 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-11-16 11:55:03,841 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 75 transitions, 268 flow. Second operand has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 11:55:03,842 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:03,842 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-11-16 11:55:03,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:04,090 INFO L130 PetriNetUnfolder]: 25/323 cut-off events. [2022-11-16 11:55:04,090 INFO L131 PetriNetUnfolder]: For 453/456 co-relation queries the response was YES. [2022-11-16 11:55:04,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 742 conditions, 323 events. 25/323 cut-off events. For 453/456 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1857 event pairs, 20 based on Foata normal form. 2/316 useless extension candidates. Maximal degree in co-relation 681. Up to 62 conditions per place. [2022-11-16 11:55:04,092 INFO L137 encePairwiseOnDemand]: 73/81 looper letters, 50 selfloop transitions, 6 changer transitions 6/108 dead transitions. [2022-11-16 11:55:04,092 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 108 transitions, 548 flow [2022-11-16 11:55:04,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:55:04,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:55:04,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 561 transitions. [2022-11-16 11:55:04,094 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7695473251028807 [2022-11-16 11:55:04,095 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 561 transitions. [2022-11-16 11:55:04,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 561 transitions. [2022-11-16 11:55:04,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:04,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 561 transitions. [2022-11-16 11:55:04,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 62.333333333333336) internal successors, (561), 9 states have internal predecessors, (561), 0 states have call successors, (0), 0 states 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 11:55:04,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states 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 11:55:04,098 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states 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 11:55:04,098 INFO L175 Difference]: Start difference. First operand has 108 places, 75 transitions, 268 flow. Second operand 9 states and 561 transitions. [2022-11-16 11:55:04,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 108 transitions, 548 flow [2022-11-16 11:55:04,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 108 transitions, 501 flow, removed 22 selfloop flow, removed 7 redundant places. [2022-11-16 11:55:04,104 INFO L231 Difference]: Finished difference. Result has 109 places, 78 transitions, 310 flow [2022-11-16 11:55:04,104 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=310, PETRI_PLACES=109, PETRI_TRANSITIONS=78} [2022-11-16 11:55:04,104 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 35 predicate places. [2022-11-16 11:55:04,105 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 78 transitions, 310 flow [2022-11-16 11:55:04,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 11:55:04,105 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:04,105 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] [2022-11-16 11:55:04,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:55:04,106 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:55:04,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:04,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1724276151, now seen corresponding path program 5 times [2022-11-16 11:55:04,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:04,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549737983] [2022-11-16 11:55:04,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:04,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:04,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:04,362 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 11:55:04,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:04,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549737983] [2022-11-16 11:55:04,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549737983] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:04,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:04,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 11:55:04,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972904792] [2022-11-16 11:55:04,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:04,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:55:04,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:04,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:55:04,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:55:04,366 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-11-16 11:55:04,366 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 78 transitions, 310 flow. Second operand has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 11:55:04,366 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:04,367 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-11-16 11:55:04,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:04,605 INFO L130 PetriNetUnfolder]: 24/304 cut-off events. [2022-11-16 11:55:04,605 INFO L131 PetriNetUnfolder]: For 504/506 co-relation queries the response was YES. [2022-11-16 11:55:04,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 731 conditions, 304 events. 24/304 cut-off events. For 504/506 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1693 event pairs, 19 based on Foata normal form. 1/297 useless extension candidates. Maximal degree in co-relation 674. Up to 62 conditions per place. [2022-11-16 11:55:04,607 INFO L137 encePairwiseOnDemand]: 73/81 looper letters, 43 selfloop transitions, 5 changer transitions 9/103 dead transitions. [2022-11-16 11:55:04,607 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 103 transitions, 546 flow [2022-11-16 11:55:04,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:55:04,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:55:04,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 555 transitions. [2022-11-16 11:55:04,610 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7613168724279835 [2022-11-16 11:55:04,610 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 555 transitions. [2022-11-16 11:55:04,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 555 transitions. [2022-11-16 11:55:04,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:04,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 555 transitions. [2022-11-16 11:55:04,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 61.666666666666664) internal successors, (555), 9 states have internal predecessors, (555), 0 states have call successors, (0), 0 states 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 11:55:04,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states 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 11:55:04,614 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states 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 11:55:04,614 INFO L175 Difference]: Start difference. First operand has 109 places, 78 transitions, 310 flow. Second operand 9 states and 555 transitions. [2022-11-16 11:55:04,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 103 transitions, 546 flow [2022-11-16 11:55:04,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 103 transitions, 513 flow, removed 15 selfloop flow, removed 4 redundant places. [2022-11-16 11:55:04,620 INFO L231 Difference]: Finished difference. Result has 116 places, 78 transitions, 320 flow [2022-11-16 11:55:04,620 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=320, PETRI_PLACES=116, PETRI_TRANSITIONS=78} [2022-11-16 11:55:04,621 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 42 predicate places. [2022-11-16 11:55:04,621 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 78 transitions, 320 flow [2022-11-16 11:55:04,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 11:55:04,622 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:04,622 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] [2022-11-16 11:55:04,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:55:04,623 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:55:04,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:04,623 INFO L85 PathProgramCache]: Analyzing trace with hash 479858243, now seen corresponding path program 6 times [2022-11-16 11:55:04,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:04,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464429618] [2022-11-16 11:55:04,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:04,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:04,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:04,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:55:04,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:04,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464429618] [2022-11-16 11:55:04,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464429618] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:04,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:04,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 11:55:04,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122734759] [2022-11-16 11:55:04,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:04,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:55:04,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:04,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:55:04,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:55:04,880 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-11-16 11:55:04,880 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 78 transitions, 320 flow. Second operand has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 11:55:04,880 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:04,881 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-11-16 11:55:04,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:05,088 INFO L130 PetriNetUnfolder]: 22/279 cut-off events. [2022-11-16 11:55:05,088 INFO L131 PetriNetUnfolder]: For 504/504 co-relation queries the response was YES. [2022-11-16 11:55:05,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 691 conditions, 279 events. 22/279 cut-off events. For 504/504 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1478 event pairs, 19 based on Foata normal form. 1/272 useless extension candidates. Maximal degree in co-relation 636. Up to 62 conditions per place. [2022-11-16 11:55:05,090 INFO L137 encePairwiseOnDemand]: 73/81 looper letters, 34 selfloop transitions, 2 changer transitions 13/95 dead transitions. [2022-11-16 11:55:05,090 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 95 transitions, 506 flow [2022-11-16 11:55:05,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:55:05,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:55:05,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 548 transitions. [2022-11-16 11:55:05,093 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7517146776406035 [2022-11-16 11:55:05,093 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 548 transitions. [2022-11-16 11:55:05,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 548 transitions. [2022-11-16 11:55:05,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:05,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 548 transitions. [2022-11-16 11:55:05,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 60.888888888888886) internal successors, (548), 9 states have internal predecessors, (548), 0 states have call successors, (0), 0 states 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 11:55:05,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states 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 11:55:05,097 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states 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 11:55:05,097 INFO L175 Difference]: Start difference. First operand has 116 places, 78 transitions, 320 flow. Second operand 9 states and 548 transitions. [2022-11-16 11:55:05,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 95 transitions, 506 flow [2022-11-16 11:55:05,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 95 transitions, 465 flow, removed 13 selfloop flow, removed 9 redundant places. [2022-11-16 11:55:05,102 INFO L231 Difference]: Finished difference. Result has 115 places, 74 transitions, 264 flow [2022-11-16 11:55:05,103 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=264, PETRI_PLACES=115, PETRI_TRANSITIONS=74} [2022-11-16 11:55:05,103 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 41 predicate places. [2022-11-16 11:55:05,104 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 74 transitions, 264 flow [2022-11-16 11:55:05,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 11:55:05,104 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:05,105 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] [2022-11-16 11:55:05,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:55:05,105 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:55:05,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:05,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1581072905, now seen corresponding path program 7 times [2022-11-16 11:55:05,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:05,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075128751] [2022-11-16 11:55:05,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:05,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:05,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:05,348 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 11:55:05,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:05,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075128751] [2022-11-16 11:55:05,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075128751] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:05,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:05,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 11:55:05,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935730323] [2022-11-16 11:55:05,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:05,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:55:05,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:05,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:55:05,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:55:05,352 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-11-16 11:55:05,353 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 74 transitions, 264 flow. Second operand has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 11:55:05,353 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:05,353 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-11-16 11:55:05,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:05,545 INFO L130 PetriNetUnfolder]: 20/238 cut-off events. [2022-11-16 11:55:05,545 INFO L131 PetriNetUnfolder]: For 378/378 co-relation queries the response was YES. [2022-11-16 11:55:05,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 569 conditions, 238 events. 20/238 cut-off events. For 378/378 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1116 event pairs, 6 based on Foata normal form. 1/234 useless extension candidates. Maximal degree in co-relation 521. Up to 45 conditions per place. [2022-11-16 11:55:05,547 INFO L137 encePairwiseOnDemand]: 73/81 looper letters, 33 selfloop transitions, 5 changer transitions 9/93 dead transitions. [2022-11-16 11:55:05,547 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 93 transitions, 446 flow [2022-11-16 11:55:05,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:55:05,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:55:05,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 547 transitions. [2022-11-16 11:55:05,549 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7503429355281207 [2022-11-16 11:55:05,549 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 547 transitions. [2022-11-16 11:55:05,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 547 transitions. [2022-11-16 11:55:05,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:05,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 547 transitions. [2022-11-16 11:55:05,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 60.77777777777778) internal successors, (547), 9 states have internal predecessors, (547), 0 states have call successors, (0), 0 states 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 11:55:05,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states 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 11:55:05,553 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states 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 11:55:05,553 INFO L175 Difference]: Start difference. First operand has 115 places, 74 transitions, 264 flow. Second operand 9 states and 547 transitions. [2022-11-16 11:55:05,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 93 transitions, 446 flow [2022-11-16 11:55:05,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 93 transitions, 403 flow, removed 18 selfloop flow, removed 10 redundant places. [2022-11-16 11:55:05,557 INFO L231 Difference]: Finished difference. Result has 108 places, 73 transitions, 251 flow [2022-11-16 11:55:05,558 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=251, PETRI_PLACES=108, PETRI_TRANSITIONS=73} [2022-11-16 11:55:05,558 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 34 predicate places. [2022-11-16 11:55:05,559 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 73 transitions, 251 flow [2022-11-16 11:55:05,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 11:55:05,559 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:05,559 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] [2022-11-16 11:55:05,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:55:05,560 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:55:05,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:05,560 INFO L85 PathProgramCache]: Analyzing trace with hash 557965623, now seen corresponding path program 8 times [2022-11-16 11:55:05,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:05,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904710200] [2022-11-16 11:55:05,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:05,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:05,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:05,870 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 11:55:05,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:05,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904710200] [2022-11-16 11:55:05,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904710200] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:05,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:05,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 11:55:05,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361348269] [2022-11-16 11:55:05,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:05,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:55:05,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:05,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:55:05,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:55:05,874 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-11-16 11:55:05,875 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 73 transitions, 251 flow. Second operand has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 11:55:05,875 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:05,875 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-11-16 11:55:05,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:06,095 INFO L130 PetriNetUnfolder]: 18/213 cut-off events. [2022-11-16 11:55:06,096 INFO L131 PetriNetUnfolder]: For 283/283 co-relation queries the response was YES. [2022-11-16 11:55:06,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 496 conditions, 213 events. 18/213 cut-off events. For 283/283 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 891 event pairs, 6 based on Foata normal form. 1/209 useless extension candidates. Maximal degree in co-relation 457. Up to 45 conditions per place. [2022-11-16 11:55:06,097 INFO L137 encePairwiseOnDemand]: 73/81 looper letters, 33 selfloop transitions, 2 changer transitions 11/92 dead transitions. [2022-11-16 11:55:06,098 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 92 transitions, 432 flow [2022-11-16 11:55:06,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:55:06,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:55:06,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 548 transitions. [2022-11-16 11:55:06,100 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7517146776406035 [2022-11-16 11:55:06,100 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 548 transitions. [2022-11-16 11:55:06,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 548 transitions. [2022-11-16 11:55:06,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:06,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 548 transitions. [2022-11-16 11:55:06,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 60.888888888888886) internal successors, (548), 9 states have internal predecessors, (548), 0 states have call successors, (0), 0 states 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 11:55:06,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states 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 11:55:06,104 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states 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 11:55:06,105 INFO L175 Difference]: Start difference. First operand has 108 places, 73 transitions, 251 flow. Second operand 9 states and 548 transitions. [2022-11-16 11:55:06,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 92 transitions, 432 flow [2022-11-16 11:55:06,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 92 transitions, 381 flow, removed 13 selfloop flow, removed 12 redundant places. [2022-11-16 11:55:06,108 INFO L231 Difference]: Finished difference. Result has 104 places, 70 transitions, 201 flow [2022-11-16 11:55:06,109 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=201, PETRI_PLACES=104, PETRI_TRANSITIONS=70} [2022-11-16 11:55:06,109 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 30 predicate places. [2022-11-16 11:55:06,109 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 70 transitions, 201 flow [2022-11-16 11:55:06,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 11:55:06,110 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:06,110 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] [2022-11-16 11:55:06,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:55:06,111 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:55:06,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:06,111 INFO L85 PathProgramCache]: Analyzing trace with hash -870049502, now seen corresponding path program 4 times [2022-11-16 11:55:06,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:06,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801826050] [2022-11-16 11:55:06,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:06,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:06,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:06,329 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 11:55:06,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:06,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801826050] [2022-11-16 11:55:06,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801826050] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:06,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:06,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 11:55:06,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753494070] [2022-11-16 11:55:06,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:06,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:55:06,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:06,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:55:06,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:55:06,333 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 81 [2022-11-16 11:55:06,333 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 70 transitions, 201 flow. Second operand has 8 states, 8 states have (on average 60.25) internal successors, (482), 8 states have internal predecessors, (482), 0 states have call successors, (0), 0 states 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 11:55:06,334 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:06,334 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 81 [2022-11-16 11:55:06,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:06,480 INFO L130 PetriNetUnfolder]: 15/171 cut-off events. [2022-11-16 11:55:06,480 INFO L131 PetriNetUnfolder]: For 168/168 co-relation queries the response was YES. [2022-11-16 11:55:06,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 382 conditions, 171 events. 15/171 cut-off events. For 168/168 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 594 event pairs, 9 based on Foata normal form. 1/168 useless extension candidates. Maximal degree in co-relation 352. Up to 47 conditions per place. [2022-11-16 11:55:06,481 INFO L137 encePairwiseOnDemand]: 74/81 looper letters, 29 selfloop transitions, 1 changer transitions 10/88 dead transitions. [2022-11-16 11:55:06,482 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 88 transitions, 368 flow [2022-11-16 11:55:06,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:55:06,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:55:06,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 504 transitions. [2022-11-16 11:55:06,483 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7777777777777778 [2022-11-16 11:55:06,484 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 504 transitions. [2022-11-16 11:55:06,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 504 transitions. [2022-11-16 11:55:06,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:06,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 504 transitions. [2022-11-16 11:55:06,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 63.0) internal successors, (504), 8 states have internal predecessors, (504), 0 states have call successors, (0), 0 states 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 11:55:06,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 81.0) internal successors, (729), 9 states have internal predecessors, (729), 0 states have call successors, (0), 0 states 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 11:55:06,487 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 81.0) internal successors, (729), 9 states have internal predecessors, (729), 0 states have call successors, (0), 0 states 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 11:55:06,487 INFO L175 Difference]: Start difference. First operand has 104 places, 70 transitions, 201 flow. Second operand 8 states and 504 transitions. [2022-11-16 11:55:06,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 88 transitions, 368 flow [2022-11-16 11:55:06,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 88 transitions, 329 flow, removed 12 selfloop flow, removed 11 redundant places. [2022-11-16 11:55:06,490 INFO L231 Difference]: Finished difference. Result has 99 places, 70 transitions, 192 flow [2022-11-16 11:55:06,491 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=192, PETRI_PLACES=99, PETRI_TRANSITIONS=70} [2022-11-16 11:55:06,491 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 25 predicate places. [2022-11-16 11:55:06,491 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 70 transitions, 192 flow [2022-11-16 11:55:06,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 60.25) internal successors, (482), 8 states have internal predecessors, (482), 0 states have call successors, (0), 0 states 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 11:55:06,492 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:06,492 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] [2022-11-16 11:55:06,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:55:06,493 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:55:06,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:06,493 INFO L85 PathProgramCache]: Analyzing trace with hash -839294457, now seen corresponding path program 9 times [2022-11-16 11:55:06,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:06,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297645770] [2022-11-16 11:55:06,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:06,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:06,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:06,742 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 11:55:06,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:06,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297645770] [2022-11-16 11:55:06,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297645770] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:06,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:06,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 11:55:06,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416815521] [2022-11-16 11:55:06,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:06,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:55:06,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:06,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:55:06,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:55:06,749 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-11-16 11:55:06,749 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 70 transitions, 192 flow. Second operand has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 11:55:06,750 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:06,750 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-11-16 11:55:06,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:06,922 INFO L130 PetriNetUnfolder]: 17/175 cut-off events. [2022-11-16 11:55:06,923 INFO L131 PetriNetUnfolder]: For 86/86 co-relation queries the response was YES. [2022-11-16 11:55:06,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 364 conditions, 175 events. 17/175 cut-off events. For 86/86 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 605 event pairs, 2 based on Foata normal form. 1/171 useless extension candidates. Maximal degree in co-relation 336. Up to 32 conditions per place. [2022-11-16 11:55:06,925 INFO L137 encePairwiseOnDemand]: 72/81 looper letters, 28 selfloop transitions, 5 changer transitions 8/87 dead transitions. [2022-11-16 11:55:06,926 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 87 transitions, 352 flow [2022-11-16 11:55:06,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:55:06,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:55:06,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 543 transitions. [2022-11-16 11:55:06,927 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7448559670781894 [2022-11-16 11:55:06,928 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 543 transitions. [2022-11-16 11:55:06,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 543 transitions. [2022-11-16 11:55:06,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:06,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 543 transitions. [2022-11-16 11:55:06,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 60.333333333333336) internal successors, (543), 9 states have internal predecessors, (543), 0 states have call successors, (0), 0 states 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 11:55:06,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states 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 11:55:06,931 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states 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 11:55:06,931 INFO L175 Difference]: Start difference. First operand has 99 places, 70 transitions, 192 flow. Second operand 9 states and 543 transitions. [2022-11-16 11:55:06,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 87 transitions, 352 flow [2022-11-16 11:55:06,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 87 transitions, 326 flow, removed 12 selfloop flow, removed 7 redundant places. [2022-11-16 11:55:06,935 INFO L231 Difference]: Finished difference. Result has 100 places, 70 transitions, 198 flow [2022-11-16 11:55:06,935 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=198, PETRI_PLACES=100, PETRI_TRANSITIONS=70} [2022-11-16 11:55:06,936 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 26 predicate places. [2022-11-16 11:55:06,936 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 70 transitions, 198 flow [2022-11-16 11:55:06,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 11:55:06,937 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:06,937 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] [2022-11-16 11:55:06,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:55:06,938 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:55:06,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:06,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1128919605, now seen corresponding path program 10 times [2022-11-16 11:55:06,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:06,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591979564] [2022-11-16 11:55:06,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:06,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:06,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:07,193 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 11:55:07,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:07,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591979564] [2022-11-16 11:55:07,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591979564] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:07,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:07,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 11:55:07,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505475036] [2022-11-16 11:55:07,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:07,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:55:07,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:07,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:55:07,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:55:07,196 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-11-16 11:55:07,197 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 70 transitions, 198 flow. Second operand has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 11:55:07,197 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:07,197 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-11-16 11:55:07,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:07,412 INFO L130 PetriNetUnfolder]: 17/161 cut-off events. [2022-11-16 11:55:07,412 INFO L131 PetriNetUnfolder]: For 78/78 co-relation queries the response was YES. [2022-11-16 11:55:07,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 337 conditions, 161 events. 17/161 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 517 event pairs, 2 based on Foata normal form. 1/156 useless extension candidates. Maximal degree in co-relation 315. Up to 38 conditions per place. [2022-11-16 11:55:07,413 INFO L137 encePairwiseOnDemand]: 72/81 looper letters, 25 selfloop transitions, 3 changer transitions 12/84 dead transitions. [2022-11-16 11:55:07,413 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 84 transitions, 330 flow [2022-11-16 11:55:07,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:55:07,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:55:07,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 542 transitions. [2022-11-16 11:55:07,415 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7434842249657064 [2022-11-16 11:55:07,415 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 542 transitions. [2022-11-16 11:55:07,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 542 transitions. [2022-11-16 11:55:07,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:07,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 542 transitions. [2022-11-16 11:55:07,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 60.22222222222222) internal successors, (542), 9 states have internal predecessors, (542), 0 states have call successors, (0), 0 states 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 11:55:07,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states 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 11:55:07,419 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states 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 11:55:07,419 INFO L175 Difference]: Start difference. First operand has 100 places, 70 transitions, 198 flow. Second operand 9 states and 542 transitions. [2022-11-16 11:55:07,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 84 transitions, 330 flow [2022-11-16 11:55:07,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 84 transitions, 307 flow, removed 7 selfloop flow, removed 7 redundant places. [2022-11-16 11:55:07,422 INFO L231 Difference]: Finished difference. Result has 101 places, 66 transitions, 169 flow [2022-11-16 11:55:07,422 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=169, PETRI_PLACES=101, PETRI_TRANSITIONS=66} [2022-11-16 11:55:07,423 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 27 predicate places. [2022-11-16 11:55:07,423 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 66 transitions, 169 flow [2022-11-16 11:55:07,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 11:55:07,424 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:07,424 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] [2022-11-16 11:55:07,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 11:55:07,424 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:55:07,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:07,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1629015889, now seen corresponding path program 1 times [2022-11-16 11:55:07,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:07,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072540303] [2022-11-16 11:55:07,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:07,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:07,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:07,682 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 11:55:07,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:07,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072540303] [2022-11-16 11:55:07,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072540303] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:07,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:07,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 11:55:07,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022582687] [2022-11-16 11:55:07,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:07,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:55:07,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:07,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:55:07,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:55:07,685 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-11-16 11:55:07,686 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 66 transitions, 169 flow. Second operand has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 11:55:07,686 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:07,686 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-11-16 11:55:07,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:07,862 INFO L130 PetriNetUnfolder]: 19/159 cut-off events. [2022-11-16 11:55:07,862 INFO L131 PetriNetUnfolder]: For 99/99 co-relation queries the response was YES. [2022-11-16 11:55:07,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 336 conditions, 159 events. 19/159 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 476 event pairs, 0 based on Foata normal form. 1/158 useless extension candidates. Maximal degree in co-relation 314. Up to 28 conditions per place. [2022-11-16 11:55:07,864 INFO L137 encePairwiseOnDemand]: 73/81 looper letters, 33 selfloop transitions, 3 changer transitions 8/88 dead transitions. [2022-11-16 11:55:07,864 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 88 transitions, 385 flow [2022-11-16 11:55:07,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:55:07,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:55:07,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 545 transitions. [2022-11-16 11:55:07,866 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.747599451303155 [2022-11-16 11:55:07,866 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 545 transitions. [2022-11-16 11:55:07,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 545 transitions. [2022-11-16 11:55:07,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:07,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 545 transitions. [2022-11-16 11:55:07,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 60.55555555555556) internal successors, (545), 9 states have internal predecessors, (545), 0 states have call successors, (0), 0 states 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 11:55:07,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states 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 11:55:07,874 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states 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 11:55:07,875 INFO L175 Difference]: Start difference. First operand has 101 places, 66 transitions, 169 flow. Second operand 9 states and 545 transitions. [2022-11-16 11:55:07,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 88 transitions, 385 flow [2022-11-16 11:55:07,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 88 transitions, 334 flow, removed 14 selfloop flow, removed 10 redundant places. [2022-11-16 11:55:07,878 INFO L231 Difference]: Finished difference. Result has 87 places, 66 transitions, 167 flow [2022-11-16 11:55:07,878 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=167, PETRI_PLACES=87, PETRI_TRANSITIONS=66} [2022-11-16 11:55:07,879 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 13 predicate places. [2022-11-16 11:55:07,879 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 66 transitions, 167 flow [2022-11-16 11:55:07,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 11:55:07,879 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:07,879 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:55:07,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 11:55:07,880 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:55:07,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:07,881 INFO L85 PathProgramCache]: Analyzing trace with hash -493128579, now seen corresponding path program 2 times [2022-11-16 11:55:07,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:07,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552408075] [2022-11-16 11:55:07,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:07,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:07,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:08,142 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 11:55:08,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:08,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552408075] [2022-11-16 11:55:08,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552408075] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:08,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:08,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 11:55:08,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395301014] [2022-11-16 11:55:08,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:08,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:55:08,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:08,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:55:08,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:55:08,150 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-11-16 11:55:08,151 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 66 transitions, 167 flow. Second operand has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 11:55:08,151 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:08,151 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-11-16 11:55:08,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:08,365 INFO L130 PetriNetUnfolder]: 18/180 cut-off events. [2022-11-16 11:55:08,366 INFO L131 PetriNetUnfolder]: For 66/66 co-relation queries the response was YES. [2022-11-16 11:55:08,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 383 conditions, 180 events. 18/180 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 625 event pairs, 6 based on Foata normal form. 1/179 useless extension candidates. Maximal degree in co-relation 359. Up to 48 conditions per place. [2022-11-16 11:55:08,367 INFO L137 encePairwiseOnDemand]: 73/81 looper letters, 35 selfloop transitions, 3 changer transitions 7/89 dead transitions. [2022-11-16 11:55:08,367 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 89 transitions, 356 flow [2022-11-16 11:55:08,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:55:08,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:55:08,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 548 transitions. [2022-11-16 11:55:08,371 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7517146776406035 [2022-11-16 11:55:08,371 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 548 transitions. [2022-11-16 11:55:08,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 548 transitions. [2022-11-16 11:55:08,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:08,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 548 transitions. [2022-11-16 11:55:08,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 60.888888888888886) internal successors, (548), 9 states have internal predecessors, (548), 0 states have call successors, (0), 0 states 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 11:55:08,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states 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 11:55:08,374 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states 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 11:55:08,375 INFO L175 Difference]: Start difference. First operand has 87 places, 66 transitions, 167 flow. Second operand 9 states and 548 transitions. [2022-11-16 11:55:08,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 89 transitions, 356 flow [2022-11-16 11:55:08,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 89 transitions, 322 flow, removed 11 selfloop flow, removed 7 redundant places. [2022-11-16 11:55:08,378 INFO L231 Difference]: Finished difference. Result has 91 places, 68 transitions, 194 flow [2022-11-16 11:55:08,378 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=194, PETRI_PLACES=91, PETRI_TRANSITIONS=68} [2022-11-16 11:55:08,379 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 17 predicate places. [2022-11-16 11:55:08,379 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 68 transitions, 194 flow [2022-11-16 11:55:08,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 11:55:08,379 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:08,379 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] [2022-11-16 11:55:08,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 11:55:08,380 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:55:08,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:08,380 INFO L85 PathProgramCache]: Analyzing trace with hash 2135834665, now seen corresponding path program 3 times [2022-11-16 11:55:08,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:08,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012717623] [2022-11-16 11:55:08,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:08,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:08,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:08,623 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 11:55:08,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:08,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012717623] [2022-11-16 11:55:08,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012717623] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:08,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:08,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 11:55:08,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024674017] [2022-11-16 11:55:08,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:08,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:55:08,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:08,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:55:08,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:55:08,627 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-11-16 11:55:08,628 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 68 transitions, 194 flow. Second operand has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 11:55:08,628 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:08,628 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-11-16 11:55:08,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:08,852 INFO L130 PetriNetUnfolder]: 17/190 cut-off events. [2022-11-16 11:55:08,853 INFO L131 PetriNetUnfolder]: For 109/111 co-relation queries the response was YES. [2022-11-16 11:55:08,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 414 conditions, 190 events. 17/190 cut-off events. For 109/111 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 704 event pairs, 11 based on Foata normal form. 1/185 useless extension candidates. Maximal degree in co-relation 387. Up to 43 conditions per place. [2022-11-16 11:55:08,854 INFO L137 encePairwiseOnDemand]: 73/81 looper letters, 32 selfloop transitions, 4 changer transitions 8/88 dead transitions. [2022-11-16 11:55:08,854 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 88 transitions, 361 flow [2022-11-16 11:55:08,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:55:08,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:55:08,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 547 transitions. [2022-11-16 11:55:08,856 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7503429355281207 [2022-11-16 11:55:08,856 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 547 transitions. [2022-11-16 11:55:08,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 547 transitions. [2022-11-16 11:55:08,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:08,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 547 transitions. [2022-11-16 11:55:08,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 60.77777777777778) internal successors, (547), 9 states have internal predecessors, (547), 0 states have call successors, (0), 0 states 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 11:55:08,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states 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 11:55:08,860 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states 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 11:55:08,860 INFO L175 Difference]: Start difference. First operand has 91 places, 68 transitions, 194 flow. Second operand 9 states and 547 transitions. [2022-11-16 11:55:08,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 88 transitions, 361 flow [2022-11-16 11:55:08,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 88 transitions, 334 flow, removed 12 selfloop flow, removed 5 redundant places. [2022-11-16 11:55:08,863 INFO L231 Difference]: Finished difference. Result has 96 places, 68 transitions, 207 flow [2022-11-16 11:55:08,863 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=207, PETRI_PLACES=96, PETRI_TRANSITIONS=68} [2022-11-16 11:55:08,864 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 22 predicate places. [2022-11-16 11:55:08,864 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 68 transitions, 207 flow [2022-11-16 11:55:08,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 11:55:08,864 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:08,865 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] [2022-11-16 11:55:08,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 11:55:08,865 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:55:08,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:08,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1755920696, now seen corresponding path program 1 times [2022-11-16 11:55:08,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:08,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361030869] [2022-11-16 11:55:08,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:08,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:08,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:09,143 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 11:55:09,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:09,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361030869] [2022-11-16 11:55:09,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361030869] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:09,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:09,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:55:09,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006258195] [2022-11-16 11:55:09,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:09,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:55:09,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:09,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:55:09,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:55:09,147 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-11-16 11:55:09,148 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 68 transitions, 207 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:09,148 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:09,149 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-11-16 11:55:09,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:09,418 INFO L130 PetriNetUnfolder]: 21/241 cut-off events. [2022-11-16 11:55:09,418 INFO L131 PetriNetUnfolder]: For 200/200 co-relation queries the response was YES. [2022-11-16 11:55:09,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 541 conditions, 241 events. 21/241 cut-off events. For 200/200 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1064 event pairs, 5 based on Foata normal form. 2/236 useless extension candidates. Maximal degree in co-relation 507. Up to 39 conditions per place. [2022-11-16 11:55:09,420 INFO L137 encePairwiseOnDemand]: 71/81 looper letters, 38 selfloop transitions, 7 changer transitions 8/95 dead transitions. [2022-11-16 11:55:09,420 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 95 transitions, 451 flow [2022-11-16 11:55:09,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:55:09,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 11:55:09,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 588 transitions. [2022-11-16 11:55:09,422 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.725925925925926 [2022-11-16 11:55:09,422 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 588 transitions. [2022-11-16 11:55:09,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 588 transitions. [2022-11-16 11:55:09,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:09,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 588 transitions. [2022-11-16 11:55:09,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 58.8) internal successors, (588), 10 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:09,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states 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 11:55:09,427 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states 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 11:55:09,427 INFO L175 Difference]: Start difference. First operand has 96 places, 68 transitions, 207 flow. Second operand 10 states and 588 transitions. [2022-11-16 11:55:09,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 95 transitions, 451 flow [2022-11-16 11:55:09,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 95 transitions, 410 flow, removed 16 selfloop flow, removed 7 redundant places. [2022-11-16 11:55:09,431 INFO L231 Difference]: Finished difference. Result has 100 places, 71 transitions, 244 flow [2022-11-16 11:55:09,431 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=244, PETRI_PLACES=100, PETRI_TRANSITIONS=71} [2022-11-16 11:55:09,432 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 26 predicate places. [2022-11-16 11:55:09,432 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 71 transitions, 244 flow [2022-11-16 11:55:09,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:09,432 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:09,433 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] [2022-11-16 11:55:09,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 11:55:09,433 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:55:09,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:09,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1839275082, now seen corresponding path program 2 times [2022-11-16 11:55:09,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:09,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243157150] [2022-11-16 11:55:09,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:09,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:09,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:09,681 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 11:55:09,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:09,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243157150] [2022-11-16 11:55:09,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243157150] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:09,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:09,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:55:09,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264051613] [2022-11-16 11:55:09,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:09,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:55:09,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:09,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:55:09,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:55:09,685 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-11-16 11:55:09,685 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 71 transitions, 244 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:09,686 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:09,686 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-11-16 11:55:09,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:09,970 INFO L130 PetriNetUnfolder]: 20/234 cut-off events. [2022-11-16 11:55:09,971 INFO L131 PetriNetUnfolder]: For 266/273 co-relation queries the response was YES. [2022-11-16 11:55:09,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 566 conditions, 234 events. 20/234 cut-off events. For 266/273 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1019 event pairs, 0 based on Foata normal form. 3/233 useless extension candidates. Maximal degree in co-relation 530. Up to 48 conditions per place. [2022-11-16 11:55:09,972 INFO L137 encePairwiseOnDemand]: 72/81 looper letters, 36 selfloop transitions, 6 changer transitions 13/97 dead transitions. [2022-11-16 11:55:09,973 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 97 transitions, 517 flow [2022-11-16 11:55:09,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:55:09,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 11:55:09,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 587 transitions. [2022-11-16 11:55:09,975 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7246913580246913 [2022-11-16 11:55:09,975 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 587 transitions. [2022-11-16 11:55:09,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 587 transitions. [2022-11-16 11:55:09,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:09,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 587 transitions. [2022-11-16 11:55:09,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 58.7) internal successors, (587), 10 states have internal predecessors, (587), 0 states have call successors, (0), 0 states 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 11:55:09,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states 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 11:55:09,979 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states 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 11:55:09,979 INFO L175 Difference]: Start difference. First operand has 100 places, 71 transitions, 244 flow. Second operand 10 states and 587 transitions. [2022-11-16 11:55:09,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 97 transitions, 517 flow [2022-11-16 11:55:09,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 97 transitions, 489 flow, removed 6 selfloop flow, removed 5 redundant places. [2022-11-16 11:55:09,983 INFO L231 Difference]: Finished difference. Result has 107 places, 71 transitions, 257 flow [2022-11-16 11:55:09,983 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=257, PETRI_PLACES=107, PETRI_TRANSITIONS=71} [2022-11-16 11:55:09,984 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 33 predicate places. [2022-11-16 11:55:09,984 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 71 transitions, 257 flow [2022-11-16 11:55:09,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:09,985 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:09,985 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] [2022-11-16 11:55:09,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 11:55:09,985 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:55:09,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:09,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1423608985, now seen corresponding path program 4 times [2022-11-16 11:55:09,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:09,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037000623] [2022-11-16 11:55:09,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:09,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:10,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:10,248 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 11:55:10,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:10,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037000623] [2022-11-16 11:55:10,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037000623] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:10,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:10,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 11:55:10,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259951857] [2022-11-16 11:55:10,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:10,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:55:10,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:10,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:55:10,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:55:10,251 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-11-16 11:55:10,252 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 71 transitions, 257 flow. Second operand has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 11:55:10,252 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:10,252 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-11-16 11:55:10,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:10,502 INFO L130 PetriNetUnfolder]: 15/248 cut-off events. [2022-11-16 11:55:10,502 INFO L131 PetriNetUnfolder]: For 354/354 co-relation queries the response was YES. [2022-11-16 11:55:10,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 621 conditions, 248 events. 15/248 cut-off events. For 354/354 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1165 event pairs, 11 based on Foata normal form. 1/241 useless extension candidates. Maximal degree in co-relation 577. Up to 60 conditions per place. [2022-11-16 11:55:10,504 INFO L137 encePairwiseOnDemand]: 73/81 looper letters, 42 selfloop transitions, 5 changer transitions 7/98 dead transitions. [2022-11-16 11:55:10,504 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 98 transitions, 503 flow [2022-11-16 11:55:10,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:55:10,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:55:10,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 554 transitions. [2022-11-16 11:55:10,506 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7599451303155007 [2022-11-16 11:55:10,507 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 554 transitions. [2022-11-16 11:55:10,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 554 transitions. [2022-11-16 11:55:10,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:10,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 554 transitions. [2022-11-16 11:55:10,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 61.55555555555556) internal successors, (554), 9 states have internal predecessors, (554), 0 states have call successors, (0), 0 states 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 11:55:10,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states 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 11:55:10,510 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states 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 11:55:10,510 INFO L175 Difference]: Start difference. First operand has 107 places, 71 transitions, 257 flow. Second operand 9 states and 554 transitions. [2022-11-16 11:55:10,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 98 transitions, 503 flow [2022-11-16 11:55:10,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 98 transitions, 458 flow, removed 15 selfloop flow, removed 8 redundant places. [2022-11-16 11:55:10,514 INFO L231 Difference]: Finished difference. Result has 108 places, 73 transitions, 282 flow [2022-11-16 11:55:10,514 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=282, PETRI_PLACES=108, PETRI_TRANSITIONS=73} [2022-11-16 11:55:10,515 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 34 predicate places. [2022-11-16 11:55:10,515 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 73 transitions, 282 flow [2022-11-16 11:55:10,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 11:55:10,520 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:10,521 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] [2022-11-16 11:55:10,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-16 11:55:10,521 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:55:10,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:10,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1219458654, now seen corresponding path program 3 times [2022-11-16 11:55:10,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:10,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011051593] [2022-11-16 11:55:10,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:10,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:10,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:10,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:55:10,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:10,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011051593] [2022-11-16 11:55:10,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011051593] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:10,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:10,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:55:10,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514697289] [2022-11-16 11:55:10,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:10,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:55:10,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:10,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:55:10,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:55:10,778 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-11-16 11:55:10,779 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 73 transitions, 282 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:10,779 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:10,779 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-11-16 11:55:10,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:11,227 INFO L130 PetriNetUnfolder]: 25/364 cut-off events. [2022-11-16 11:55:11,227 INFO L131 PetriNetUnfolder]: For 653/661 co-relation queries the response was YES. [2022-11-16 11:55:11,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 970 conditions, 364 events. 25/364 cut-off events. For 653/661 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2210 event pairs, 11 based on Foata normal form. 5/363 useless extension candidates. Maximal degree in co-relation 915. Up to 62 conditions per place. [2022-11-16 11:55:11,230 INFO L137 encePairwiseOnDemand]: 71/81 looper letters, 55 selfloop transitions, 8 changer transitions 20/125 dead transitions. [2022-11-16 11:55:11,230 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 125 transitions, 761 flow [2022-11-16 11:55:11,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 11:55:11,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-16 11:55:11,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 940 transitions. [2022-11-16 11:55:11,232 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7253086419753086 [2022-11-16 11:55:11,232 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 940 transitions. [2022-11-16 11:55:11,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 940 transitions. [2022-11-16 11:55:11,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:11,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 940 transitions. [2022-11-16 11:55:11,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 58.75) internal successors, (940), 16 states have internal predecessors, (940), 0 states have call successors, (0), 0 states 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 11:55:11,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 81.0) internal successors, (1377), 17 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states 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 11:55:11,239 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 81.0) internal successors, (1377), 17 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states 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 11:55:11,240 INFO L175 Difference]: Start difference. First operand has 108 places, 73 transitions, 282 flow. Second operand 16 states and 940 transitions. [2022-11-16 11:55:11,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 125 transitions, 761 flow [2022-11-16 11:55:11,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 125 transitions, 719 flow, removed 18 selfloop flow, removed 5 redundant places. [2022-11-16 11:55:11,245 INFO L231 Difference]: Finished difference. Result has 127 places, 76 transitions, 343 flow [2022-11-16 11:55:11,245 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=343, PETRI_PLACES=127, PETRI_TRANSITIONS=76} [2022-11-16 11:55:11,246 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 53 predicate places. [2022-11-16 11:55:11,246 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 76 transitions, 343 flow [2022-11-16 11:55:11,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:11,246 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:11,247 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] [2022-11-16 11:55:11,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-16 11:55:11,247 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:55:11,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:11,248 INFO L85 PathProgramCache]: Analyzing trace with hash 739255042, now seen corresponding path program 4 times [2022-11-16 11:55:11,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:11,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058694105] [2022-11-16 11:55:11,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:11,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:11,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:11,518 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 11:55:11,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:11,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058694105] [2022-11-16 11:55:11,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058694105] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:11,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:11,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:55:11,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775759801] [2022-11-16 11:55:11,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:11,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:55:11,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:11,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:55:11,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:55:11,522 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-11-16 11:55:11,523 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 76 transitions, 343 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:11,523 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:11,523 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-11-16 11:55:11,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:11,792 INFO L130 PetriNetUnfolder]: 22/323 cut-off events. [2022-11-16 11:55:11,793 INFO L131 PetriNetUnfolder]: For 830/837 co-relation queries the response was YES. [2022-11-16 11:55:11,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 950 conditions, 323 events. 22/323 cut-off events. For 830/837 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1798 event pairs, 10 based on Foata normal form. 3/317 useless extension candidates. Maximal degree in co-relation 879. Up to 54 conditions per place. [2022-11-16 11:55:11,795 INFO L137 encePairwiseOnDemand]: 72/81 looper letters, 44 selfloop transitions, 8 changer transitions 13/107 dead transitions. [2022-11-16 11:55:11,795 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 107 transitions, 730 flow [2022-11-16 11:55:11,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:55:11,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 11:55:11,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 591 transitions. [2022-11-16 11:55:11,800 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7296296296296296 [2022-11-16 11:55:11,800 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 591 transitions. [2022-11-16 11:55:11,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 591 transitions. [2022-11-16 11:55:11,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:11,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 591 transitions. [2022-11-16 11:55:11,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 59.1) internal successors, (591), 10 states have internal predecessors, (591), 0 states have call successors, (0), 0 states 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 11:55:11,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states 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 11:55:11,804 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states 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 11:55:11,804 INFO L175 Difference]: Start difference. First operand has 127 places, 76 transitions, 343 flow. Second operand 10 states and 591 transitions. [2022-11-16 11:55:11,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 107 transitions, 730 flow [2022-11-16 11:55:11,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 107 transitions, 651 flow, removed 33 selfloop flow, removed 12 redundant places. [2022-11-16 11:55:11,810 INFO L231 Difference]: Finished difference. Result has 122 places, 79 transitions, 381 flow [2022-11-16 11:55:11,810 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=381, PETRI_PLACES=122, PETRI_TRANSITIONS=79} [2022-11-16 11:55:11,812 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 48 predicate places. [2022-11-16 11:55:11,812 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 79 transitions, 381 flow [2022-11-16 11:55:11,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:11,828 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:11,828 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] [2022-11-16 11:55:11,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-16 11:55:11,828 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:55:11,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:11,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1535650505, now seen corresponding path program 5 times [2022-11-16 11:55:11,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:11,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882032862] [2022-11-16 11:55:11,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:11,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:11,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:12,052 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 11:55:12,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:12,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882032862] [2022-11-16 11:55:12,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882032862] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:12,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:12,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 11:55:12,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678034262] [2022-11-16 11:55:12,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:12,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:55:12,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:12,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:55:12,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:55:12,058 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-11-16 11:55:12,059 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 79 transitions, 381 flow. Second operand has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 11:55:12,060 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:12,060 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-11-16 11:55:12,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:12,300 INFO L130 PetriNetUnfolder]: 17/331 cut-off events. [2022-11-16 11:55:12,300 INFO L131 PetriNetUnfolder]: For 767/776 co-relation queries the response was YES. [2022-11-16 11:55:12,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 928 conditions, 331 events. 17/331 cut-off events. For 767/776 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1888 event pairs, 5 based on Foata normal form. 4/328 useless extension candidates. Maximal degree in co-relation 866. Up to 78 conditions per place. [2022-11-16 11:55:12,302 INFO L137 encePairwiseOnDemand]: 73/81 looper letters, 39 selfloop transitions, 11 changer transitions 10/105 dead transitions. [2022-11-16 11:55:12,303 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 105 transitions, 706 flow [2022-11-16 11:55:12,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:55:12,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:55:12,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 548 transitions. [2022-11-16 11:55:12,304 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7517146776406035 [2022-11-16 11:55:12,305 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 548 transitions. [2022-11-16 11:55:12,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 548 transitions. [2022-11-16 11:55:12,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:12,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 548 transitions. [2022-11-16 11:55:12,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 60.888888888888886) internal successors, (548), 9 states have internal predecessors, (548), 0 states have call successors, (0), 0 states 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 11:55:12,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states 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 11:55:12,308 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states 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 11:55:12,308 INFO L175 Difference]: Start difference. First operand has 122 places, 79 transitions, 381 flow. Second operand 9 states and 548 transitions. [2022-11-16 11:55:12,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 105 transitions, 706 flow [2022-11-16 11:55:12,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 105 transitions, 670 flow, removed 17 selfloop flow, removed 5 redundant places. [2022-11-16 11:55:12,315 INFO L231 Difference]: Finished difference. Result has 126 places, 81 transitions, 425 flow [2022-11-16 11:55:12,315 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=425, PETRI_PLACES=126, PETRI_TRANSITIONS=81} [2022-11-16 11:55:12,316 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 52 predicate places. [2022-11-16 11:55:12,316 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 81 transitions, 425 flow [2022-11-16 11:55:12,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 11:55:12,317 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:12,317 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] [2022-11-16 11:55:12,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-16 11:55:12,317 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:55:12,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:12,318 INFO L85 PathProgramCache]: Analyzing trace with hash 95799972, now seen corresponding path program 5 times [2022-11-16 11:55:12,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:12,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916935861] [2022-11-16 11:55:12,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:12,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:12,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:12,588 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 11:55:12,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:12,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916935861] [2022-11-16 11:55:12,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916935861] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:12,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:12,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:55:12,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402107576] [2022-11-16 11:55:12,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:12,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:55:12,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:12,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:55:12,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:55:12,592 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-11-16 11:55:12,593 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 81 transitions, 425 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:12,593 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:12,593 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-11-16 11:55:12,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:12,953 INFO L130 PetriNetUnfolder]: 18/384 cut-off events. [2022-11-16 11:55:12,953 INFO L131 PetriNetUnfolder]: For 867/874 co-relation queries the response was YES. [2022-11-16 11:55:12,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1053 conditions, 384 events. 18/384 cut-off events. For 867/874 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2440 event pairs, 4 based on Foata normal form. 2/379 useless extension candidates. Maximal degree in co-relation 975. Up to 79 conditions per place. [2022-11-16 11:55:12,956 INFO L137 encePairwiseOnDemand]: 71/81 looper letters, 58 selfloop transitions, 16 changer transitions 7/123 dead transitions. [2022-11-16 11:55:12,957 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 123 transitions, 856 flow [2022-11-16 11:55:12,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 11:55:12,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-16 11:55:12,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 713 transitions. [2022-11-16 11:55:12,960 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7335390946502057 [2022-11-16 11:55:12,960 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 713 transitions. [2022-11-16 11:55:12,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 713 transitions. [2022-11-16 11:55:12,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:12,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 713 transitions. [2022-11-16 11:55:12,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 59.416666666666664) internal successors, (713), 12 states have internal predecessors, (713), 0 states have call successors, (0), 0 states 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 11:55:12,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 81.0) internal successors, (1053), 13 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states 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 11:55:12,965 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 81.0) internal successors, (1053), 13 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states 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 11:55:12,965 INFO L175 Difference]: Start difference. First operand has 126 places, 81 transitions, 425 flow. Second operand 12 states and 713 transitions. [2022-11-16 11:55:12,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 123 transitions, 856 flow [2022-11-16 11:55:12,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 123 transitions, 803 flow, removed 20 selfloop flow, removed 6 redundant places. [2022-11-16 11:55:12,972 INFO L231 Difference]: Finished difference. Result has 135 places, 86 transitions, 525 flow [2022-11-16 11:55:12,973 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=525, PETRI_PLACES=135, PETRI_TRANSITIONS=86} [2022-11-16 11:55:12,974 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 61 predicate places. [2022-11-16 11:55:12,974 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 86 transitions, 525 flow [2022-11-16 11:55:12,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:12,975 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:12,975 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] [2022-11-16 11:55:12,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-16 11:55:12,975 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:55:12,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:12,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1732848334, now seen corresponding path program 6 times [2022-11-16 11:55:12,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:12,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677473721] [2022-11-16 11:55:12,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:12,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:12,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:13,211 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 11:55:13,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:13,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677473721] [2022-11-16 11:55:13,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677473721] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:13,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:13,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:55:13,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776388635] [2022-11-16 11:55:13,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:13,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:55:13,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:13,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:55:13,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:55:13,216 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-11-16 11:55:13,217 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 86 transitions, 525 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:13,217 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:13,218 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-11-16 11:55:13,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:13,539 INFO L130 PetriNetUnfolder]: 16/403 cut-off events. [2022-11-16 11:55:13,539 INFO L131 PetriNetUnfolder]: For 1078/1089 co-relation queries the response was YES. [2022-11-16 11:55:13,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1137 conditions, 403 events. 16/403 cut-off events. For 1078/1089 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2668 event pairs, 9 based on Foata normal form. 2/398 useless extension candidates. Maximal degree in co-relation 1051. Up to 71 conditions per place. [2022-11-16 11:55:13,542 INFO L137 encePairwiseOnDemand]: 71/81 looper letters, 69 selfloop transitions, 11 changer transitions 8/130 dead transitions. [2022-11-16 11:55:13,542 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 130 transitions, 967 flow [2022-11-16 11:55:13,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:55:13,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 11:55:13,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 610 transitions. [2022-11-16 11:55:13,545 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7530864197530864 [2022-11-16 11:55:13,545 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 610 transitions. [2022-11-16 11:55:13,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 610 transitions. [2022-11-16 11:55:13,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:13,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 610 transitions. [2022-11-16 11:55:13,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 61.0) internal successors, (610), 10 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:13,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states 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 11:55:13,551 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states 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 11:55:13,551 INFO L175 Difference]: Start difference. First operand has 135 places, 86 transitions, 525 flow. Second operand 10 states and 610 transitions. [2022-11-16 11:55:13,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 130 transitions, 967 flow [2022-11-16 11:55:13,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 130 transitions, 908 flow, removed 20 selfloop flow, removed 6 redundant places. [2022-11-16 11:55:13,564 INFO L231 Difference]: Finished difference. Result has 142 places, 89 transitions, 580 flow [2022-11-16 11:55:13,564 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=580, PETRI_PLACES=142, PETRI_TRANSITIONS=89} [2022-11-16 11:55:13,565 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 68 predicate places. [2022-11-16 11:55:13,565 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 89 transitions, 580 flow [2022-11-16 11:55:13,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:13,566 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:13,566 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] [2022-11-16 11:55:13,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-16 11:55:13,567 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:55:13,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:13,568 INFO L85 PathProgramCache]: Analyzing trace with hash 2053233527, now seen corresponding path program 6 times [2022-11-16 11:55:13,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:13,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014018996] [2022-11-16 11:55:13,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:13,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:13,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:13,844 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 11:55:13,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:13,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014018996] [2022-11-16 11:55:13,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014018996] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:13,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:13,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 11:55:13,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313541375] [2022-11-16 11:55:13,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:13,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:55:13,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:13,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:55:13,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:55:13,850 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-11-16 11:55:13,851 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 89 transitions, 580 flow. Second operand has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 11:55:13,851 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:13,851 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-11-16 11:55:13,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:14,095 INFO L130 PetriNetUnfolder]: 15/380 cut-off events. [2022-11-16 11:55:14,096 INFO L131 PetriNetUnfolder]: For 1159/1172 co-relation queries the response was YES. [2022-11-16 11:55:14,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1117 conditions, 380 events. 15/380 cut-off events. For 1159/1172 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2419 event pairs, 5 based on Foata normal form. 4/379 useless extension candidates. Maximal degree in co-relation 1042. Up to 110 conditions per place. [2022-11-16 11:55:14,098 INFO L137 encePairwiseOnDemand]: 73/81 looper letters, 35 selfloop transitions, 8 changer transitions 17/106 dead transitions. [2022-11-16 11:55:14,099 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 106 transitions, 843 flow [2022-11-16 11:55:14,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:55:14,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:55:14,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 542 transitions. [2022-11-16 11:55:14,100 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7434842249657064 [2022-11-16 11:55:14,101 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 542 transitions. [2022-11-16 11:55:14,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 542 transitions. [2022-11-16 11:55:14,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:14,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 542 transitions. [2022-11-16 11:55:14,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 60.22222222222222) internal successors, (542), 9 states have internal predecessors, (542), 0 states have call successors, (0), 0 states 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 11:55:14,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states 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 11:55:14,104 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states 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 11:55:14,104 INFO L175 Difference]: Start difference. First operand has 142 places, 89 transitions, 580 flow. Second operand 9 states and 542 transitions. [2022-11-16 11:55:14,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 106 transitions, 843 flow [2022-11-16 11:55:14,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 106 transitions, 811 flow, removed 12 selfloop flow, removed 5 redundant places. [2022-11-16 11:55:14,114 INFO L231 Difference]: Finished difference. Result has 145 places, 82 transitions, 441 flow [2022-11-16 11:55:14,115 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=441, PETRI_PLACES=145, PETRI_TRANSITIONS=82} [2022-11-16 11:55:14,115 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 71 predicate places. [2022-11-16 11:55:14,116 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 82 transitions, 441 flow [2022-11-16 11:55:14,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 11:55:14,116 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:14,116 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] [2022-11-16 11:55:14,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-16 11:55:14,117 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:55:14,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:14,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1901451226, now seen corresponding path program 7 times [2022-11-16 11:55:14,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:14,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302674559] [2022-11-16 11:55:14,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:14,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:14,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:14,352 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 11:55:14,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:14,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302674559] [2022-11-16 11:55:14,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302674559] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:14,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:14,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:55:14,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7218715] [2022-11-16 11:55:14,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:14,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:55:14,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:14,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:55:14,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:55:14,355 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-11-16 11:55:14,356 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 82 transitions, 441 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:14,356 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:14,356 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-11-16 11:55:14,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:14,682 INFO L130 PetriNetUnfolder]: 15/308 cut-off events. [2022-11-16 11:55:14,683 INFO L131 PetriNetUnfolder]: For 904/910 co-relation queries the response was YES. [2022-11-16 11:55:14,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 906 conditions, 308 events. 15/308 cut-off events. For 904/910 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1712 event pairs, 2 based on Foata normal form. 2/305 useless extension candidates. Maximal degree in co-relation 871. Up to 86 conditions per place. [2022-11-16 11:55:14,685 INFO L137 encePairwiseOnDemand]: 72/81 looper letters, 44 selfloop transitions, 10 changer transitions 10/106 dead transitions. [2022-11-16 11:55:14,685 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 106 transitions, 740 flow [2022-11-16 11:55:14,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:55:14,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 11:55:14,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 589 transitions. [2022-11-16 11:55:14,692 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7271604938271605 [2022-11-16 11:55:14,692 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 589 transitions. [2022-11-16 11:55:14,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 589 transitions. [2022-11-16 11:55:14,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:14,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 589 transitions. [2022-11-16 11:55:14,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 58.9) internal successors, (589), 10 states have internal predecessors, (589), 0 states have call successors, (0), 0 states 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 11:55:14,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states 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 11:55:14,701 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states 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 11:55:14,702 INFO L175 Difference]: Start difference. First operand has 145 places, 82 transitions, 441 flow. Second operand 10 states and 589 transitions. [2022-11-16 11:55:14,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 106 transitions, 740 flow [2022-11-16 11:55:14,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 106 transitions, 688 flow, removed 17 selfloop flow, removed 8 redundant places. [2022-11-16 11:55:14,709 INFO L231 Difference]: Finished difference. Result has 139 places, 82 transitions, 441 flow [2022-11-16 11:55:14,710 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=441, PETRI_PLACES=139, PETRI_TRANSITIONS=82} [2022-11-16 11:55:14,710 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 65 predicate places. [2022-11-16 11:55:14,711 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 82 transitions, 441 flow [2022-11-16 11:55:14,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:14,711 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:14,712 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] [2022-11-16 11:55:14,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-16 11:55:14,712 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:55:14,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:14,713 INFO L85 PathProgramCache]: Analyzing trace with hash -647306878, now seen corresponding path program 8 times [2022-11-16 11:55:14,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:14,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397384441] [2022-11-16 11:55:14,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:14,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:14,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:14,972 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 11:55:14,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:14,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397384441] [2022-11-16 11:55:14,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397384441] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:14,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:14,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:55:14,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677398186] [2022-11-16 11:55:14,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:14,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:55:14,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:14,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:55:14,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:55:14,977 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-11-16 11:55:14,978 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 82 transitions, 441 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:14,978 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:14,978 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-11-16 11:55:14,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:15,224 INFO L130 PetriNetUnfolder]: 13/282 cut-off events. [2022-11-16 11:55:15,225 INFO L131 PetriNetUnfolder]: For 833/843 co-relation queries the response was YES. [2022-11-16 11:55:15,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 851 conditions, 282 events. 13/282 cut-off events. For 833/843 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1471 event pairs, 2 based on Foata normal form. 2/280 useless extension candidates. Maximal degree in co-relation 816. Up to 86 conditions per place. [2022-11-16 11:55:15,228 INFO L137 encePairwiseOnDemand]: 72/81 looper letters, 35 selfloop transitions, 7 changer transitions 14/98 dead transitions. [2022-11-16 11:55:15,228 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 98 transitions, 676 flow [2022-11-16 11:55:15,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:55:15,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 11:55:15,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 582 transitions. [2022-11-16 11:55:15,232 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7185185185185186 [2022-11-16 11:55:15,233 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 582 transitions. [2022-11-16 11:55:15,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 582 transitions. [2022-11-16 11:55:15,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:15,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 582 transitions. [2022-11-16 11:55:15,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 58.2) internal successors, (582), 10 states have internal predecessors, (582), 0 states have call successors, (0), 0 states 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 11:55:15,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states 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 11:55:15,237 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states 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 11:55:15,237 INFO L175 Difference]: Start difference. First operand has 139 places, 82 transitions, 441 flow. Second operand 10 states and 582 transitions. [2022-11-16 11:55:15,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 98 transitions, 676 flow [2022-11-16 11:55:15,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 98 transitions, 629 flow, removed 11 selfloop flow, removed 10 redundant places. [2022-11-16 11:55:15,244 INFO L231 Difference]: Finished difference. Result has 138 places, 78 transitions, 378 flow [2022-11-16 11:55:15,245 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=378, PETRI_PLACES=138, PETRI_TRANSITIONS=78} [2022-11-16 11:55:15,249 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 64 predicate places. [2022-11-16 11:55:15,249 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 78 transitions, 378 flow [2022-11-16 11:55:15,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:15,250 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:15,250 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] [2022-11-16 11:55:15,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-16 11:55:15,253 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:55:15,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:15,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1370040110, now seen corresponding path program 9 times [2022-11-16 11:55:15,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:15,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487602855] [2022-11-16 11:55:15,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:15,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:15,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:15,501 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 11:55:15,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:15,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487602855] [2022-11-16 11:55:15,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487602855] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:15,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:15,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:55:15,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137810354] [2022-11-16 11:55:15,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:15,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:55:15,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:15,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:55:15,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:55:15,509 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-11-16 11:55:15,510 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 78 transitions, 378 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:15,510 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:15,510 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-11-16 11:55:15,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:15,761 INFO L130 PetriNetUnfolder]: 11/243 cut-off events. [2022-11-16 11:55:15,761 INFO L131 PetriNetUnfolder]: For 700/707 co-relation queries the response was YES. [2022-11-16 11:55:15,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 724 conditions, 243 events. 11/243 cut-off events. For 700/707 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1153 event pairs, 5 based on Foata normal form. 3/242 useless extension candidates. Maximal degree in co-relation 691. Up to 53 conditions per place. [2022-11-16 11:55:15,764 INFO L137 encePairwiseOnDemand]: 72/81 looper letters, 38 selfloop transitions, 8 changer transitions 10/98 dead transitions. [2022-11-16 11:55:15,764 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 98 transitions, 626 flow [2022-11-16 11:55:15,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:55:15,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 11:55:15,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 588 transitions. [2022-11-16 11:55:15,766 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.725925925925926 [2022-11-16 11:55:15,766 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 588 transitions. [2022-11-16 11:55:15,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 588 transitions. [2022-11-16 11:55:15,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:15,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 588 transitions. [2022-11-16 11:55:15,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 58.8) internal successors, (588), 10 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:15,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states 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 11:55:15,769 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states 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 11:55:15,770 INFO L175 Difference]: Start difference. First operand has 138 places, 78 transitions, 378 flow. Second operand 10 states and 588 transitions. [2022-11-16 11:55:15,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 98 transitions, 626 flow [2022-11-16 11:55:15,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 98 transitions, 554 flow, removed 23 selfloop flow, removed 13 redundant places. [2022-11-16 11:55:15,775 INFO L231 Difference]: Finished difference. Result has 129 places, 77 transitions, 350 flow [2022-11-16 11:55:15,776 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=350, PETRI_PLACES=129, PETRI_TRANSITIONS=77} [2022-11-16 11:55:15,777 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 55 predicate places. [2022-11-16 11:55:15,777 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 77 transitions, 350 flow [2022-11-16 11:55:15,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:15,777 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:15,778 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] [2022-11-16 11:55:15,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-16 11:55:15,778 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:55:15,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:15,779 INFO L85 PathProgramCache]: Analyzing trace with hash -216326774, now seen corresponding path program 10 times [2022-11-16 11:55:15,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:15,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742529524] [2022-11-16 11:55:15,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:15,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:15,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:16,031 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 11:55:16,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:16,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742529524] [2022-11-16 11:55:16,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742529524] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:16,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:16,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:55:16,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879688267] [2022-11-16 11:55:16,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:16,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:55:16,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:16,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:55:16,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:55:16,035 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-11-16 11:55:16,036 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 77 transitions, 350 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:16,037 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:16,037 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-11-16 11:55:16,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:16,278 INFO L130 PetriNetUnfolder]: 9/219 cut-off events. [2022-11-16 11:55:16,278 INFO L131 PetriNetUnfolder]: For 430/434 co-relation queries the response was YES. [2022-11-16 11:55:16,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 629 conditions, 219 events. 9/219 cut-off events. For 430/434 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 950 event pairs, 5 based on Foata normal form. 2/217 useless extension candidates. Maximal degree in co-relation 602. Up to 53 conditions per place. [2022-11-16 11:55:16,280 INFO L137 encePairwiseOnDemand]: 72/81 looper letters, 38 selfloop transitions, 5 changer transitions 12/97 dead transitions. [2022-11-16 11:55:16,281 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 97 transitions, 585 flow [2022-11-16 11:55:16,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:55:16,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 11:55:16,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 589 transitions. [2022-11-16 11:55:16,283 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7271604938271605 [2022-11-16 11:55:16,283 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 589 transitions. [2022-11-16 11:55:16,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 589 transitions. [2022-11-16 11:55:16,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:16,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 589 transitions. [2022-11-16 11:55:16,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 58.9) internal successors, (589), 10 states have internal predecessors, (589), 0 states have call successors, (0), 0 states 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 11:55:16,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states 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 11:55:16,291 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states 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 11:55:16,291 INFO L175 Difference]: Start difference. First operand has 129 places, 77 transitions, 350 flow. Second operand 10 states and 589 transitions. [2022-11-16 11:55:16,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 97 transitions, 585 flow [2022-11-16 11:55:16,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 97 transitions, 521 flow, removed 14 selfloop flow, removed 13 redundant places. [2022-11-16 11:55:16,296 INFO L231 Difference]: Finished difference. Result has 125 places, 74 transitions, 297 flow [2022-11-16 11:55:16,297 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=297, PETRI_PLACES=125, PETRI_TRANSITIONS=74} [2022-11-16 11:55:16,297 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 51 predicate places. [2022-11-16 11:55:16,298 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 74 transitions, 297 flow [2022-11-16 11:55:16,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:16,298 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:16,299 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] [2022-11-16 11:55:16,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-16 11:55:16,299 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:55:16,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:16,300 INFO L85 PathProgramCache]: Analyzing trace with hash -444050382, now seen corresponding path program 11 times [2022-11-16 11:55:16,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:16,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956580323] [2022-11-16 11:55:16,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:16,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:16,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:16,574 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 11:55:16,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:16,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956580323] [2022-11-16 11:55:16,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956580323] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:16,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:16,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:55:16,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578593436] [2022-11-16 11:55:16,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:16,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:55:16,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:16,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:55:16,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:55:16,577 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-11-16 11:55:16,578 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 74 transitions, 297 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:16,578 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:16,578 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-11-16 11:55:16,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:16,823 INFO L130 PetriNetUnfolder]: 8/210 cut-off events. [2022-11-16 11:55:16,824 INFO L131 PetriNetUnfolder]: For 354/358 co-relation queries the response was YES. [2022-11-16 11:55:16,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 567 conditions, 210 events. 8/210 cut-off events. For 354/358 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 864 event pairs, 5 based on Foata normal form. 2/208 useless extension candidates. Maximal degree in co-relation 544. Up to 53 conditions per place. [2022-11-16 11:55:16,825 INFO L137 encePairwiseOnDemand]: 72/81 looper letters, 36 selfloop transitions, 6 changer transitions 10/94 dead transitions. [2022-11-16 11:55:16,827 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 94 transitions, 515 flow [2022-11-16 11:55:16,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:55:16,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 11:55:16,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 587 transitions. [2022-11-16 11:55:16,829 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7246913580246913 [2022-11-16 11:55:16,829 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 587 transitions. [2022-11-16 11:55:16,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 587 transitions. [2022-11-16 11:55:16,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:16,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 587 transitions. [2022-11-16 11:55:16,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 58.7) internal successors, (587), 10 states have internal predecessors, (587), 0 states have call successors, (0), 0 states 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 11:55:16,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states 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 11:55:16,832 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states 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 11:55:16,833 INFO L175 Difference]: Start difference. First operand has 125 places, 74 transitions, 297 flow. Second operand 10 states and 587 transitions. [2022-11-16 11:55:16,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 94 transitions, 515 flow [2022-11-16 11:55:16,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 94 transitions, 467 flow, removed 15 selfloop flow, removed 11 redundant places. [2022-11-16 11:55:16,837 INFO L231 Difference]: Finished difference. Result has 122 places, 75 transitions, 307 flow [2022-11-16 11:55:16,837 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=307, PETRI_PLACES=122, PETRI_TRANSITIONS=75} [2022-11-16 11:55:16,837 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 48 predicate places. [2022-11-16 11:55:16,837 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 75 transitions, 307 flow [2022-11-16 11:55:16,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:16,838 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:16,838 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] [2022-11-16 11:55:16,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-16 11:55:16,839 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:55:16,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:16,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1470374936, now seen corresponding path program 12 times [2022-11-16 11:55:16,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:16,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157391636] [2022-11-16 11:55:16,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:16,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:16,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:17,089 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 11:55:17,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:17,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157391636] [2022-11-16 11:55:17,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157391636] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:17,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:17,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:55:17,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560407865] [2022-11-16 11:55:17,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:17,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:55:17,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:17,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:55:17,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:55:17,092 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-11-16 11:55:17,093 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 75 transitions, 307 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:17,093 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:17,094 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-11-16 11:55:17,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:17,316 INFO L130 PetriNetUnfolder]: 8/194 cut-off events. [2022-11-16 11:55:17,316 INFO L131 PetriNetUnfolder]: For 300/304 co-relation queries the response was YES. [2022-11-16 11:55:17,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 523 conditions, 194 events. 8/194 cut-off events. For 300/304 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 741 event pairs, 5 based on Foata normal form. 2/192 useless extension candidates. Maximal degree in co-relation 501. Up to 53 conditions per place. [2022-11-16 11:55:17,318 INFO L137 encePairwiseOnDemand]: 72/81 looper letters, 27 selfloop transitions, 2 changer transitions 16/87 dead transitions. [2022-11-16 11:55:17,318 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 87 transitions, 472 flow [2022-11-16 11:55:17,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:55:17,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 11:55:17,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 580 transitions. [2022-11-16 11:55:17,320 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7160493827160493 [2022-11-16 11:55:17,320 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 580 transitions. [2022-11-16 11:55:17,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 580 transitions. [2022-11-16 11:55:17,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:17,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 580 transitions. [2022-11-16 11:55:17,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 58.0) internal successors, (580), 10 states have internal predecessors, (580), 0 states have call successors, (0), 0 states 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 11:55:17,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states 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 11:55:17,324 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states 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 11:55:17,324 INFO L175 Difference]: Start difference. First operand has 122 places, 75 transitions, 307 flow. Second operand 10 states and 580 transitions. [2022-11-16 11:55:17,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 87 transitions, 472 flow [2022-11-16 11:55:17,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 87 transitions, 441 flow, removed 11 selfloop flow, removed 7 redundant places. [2022-11-16 11:55:17,328 INFO L231 Difference]: Finished difference. Result has 123 places, 69 transitions, 240 flow [2022-11-16 11:55:17,329 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=240, PETRI_PLACES=123, PETRI_TRANSITIONS=69} [2022-11-16 11:55:17,329 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 49 predicate places. [2022-11-16 11:55:17,329 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 69 transitions, 240 flow [2022-11-16 11:55:17,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:17,330 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:17,330 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] [2022-11-16 11:55:17,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-16 11:55:17,331 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:55:17,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:17,331 INFO L85 PathProgramCache]: Analyzing trace with hash -728641598, now seen corresponding path program 13 times [2022-11-16 11:55:17,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:17,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705133485] [2022-11-16 11:55:17,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:17,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:17,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:17,549 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 11:55:17,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:17,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705133485] [2022-11-16 11:55:17,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705133485] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:17,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:17,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:55:17,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641402250] [2022-11-16 11:55:17,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:17,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:55:17,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:17,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:55:17,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:55:17,553 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-11-16 11:55:17,553 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 69 transitions, 240 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:17,554 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:17,554 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-11-16 11:55:17,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:17,794 INFO L130 PetriNetUnfolder]: 7/188 cut-off events. [2022-11-16 11:55:17,794 INFO L131 PetriNetUnfolder]: For 262/266 co-relation queries the response was YES. [2022-11-16 11:55:17,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 494 conditions, 188 events. 7/188 cut-off events. For 262/266 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 709 event pairs, 0 based on Foata normal form. 2/188 useless extension candidates. Maximal degree in co-relation 473. Up to 41 conditions per place. [2022-11-16 11:55:17,796 INFO L137 encePairwiseOnDemand]: 72/81 looper letters, 33 selfloop transitions, 7 changer transitions 7/89 dead transitions. [2022-11-16 11:55:17,796 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 89 transitions, 462 flow [2022-11-16 11:55:17,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:55:17,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 11:55:17,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 582 transitions. [2022-11-16 11:55:17,798 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7185185185185186 [2022-11-16 11:55:17,798 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 582 transitions. [2022-11-16 11:55:17,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 582 transitions. [2022-11-16 11:55:17,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:17,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 582 transitions. [2022-11-16 11:55:17,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 58.2) internal successors, (582), 10 states have internal predecessors, (582), 0 states have call successors, (0), 0 states 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 11:55:17,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states 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 11:55:17,802 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states 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 11:55:17,802 INFO L175 Difference]: Start difference. First operand has 123 places, 69 transitions, 240 flow. Second operand 10 states and 582 transitions. [2022-11-16 11:55:17,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 89 transitions, 462 flow [2022-11-16 11:55:17,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 89 transitions, 404 flow, removed 22 selfloop flow, removed 11 redundant places. [2022-11-16 11:55:17,805 INFO L231 Difference]: Finished difference. Result has 111 places, 71 transitions, 260 flow [2022-11-16 11:55:17,806 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=260, PETRI_PLACES=111, PETRI_TRANSITIONS=71} [2022-11-16 11:55:17,806 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 37 predicate places. [2022-11-16 11:55:17,806 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 71 transitions, 260 flow [2022-11-16 11:55:17,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:17,807 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:17,807 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] [2022-11-16 11:55:17,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-16 11:55:17,808 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:55:17,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:17,808 INFO L85 PathProgramCache]: Analyzing trace with hash -946322924, now seen corresponding path program 14 times [2022-11-16 11:55:17,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:17,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822389168] [2022-11-16 11:55:17,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:17,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:17,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:18,050 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 11:55:18,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:18,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822389168] [2022-11-16 11:55:18,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822389168] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:18,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:18,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:55:18,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186482537] [2022-11-16 11:55:18,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:18,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:55:18,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:18,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:55:18,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:55:18,054 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-11-16 11:55:18,055 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 71 transitions, 260 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:18,055 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:18,055 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-11-16 11:55:18,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:18,322 INFO L130 PetriNetUnfolder]: 5/191 cut-off events. [2022-11-16 11:55:18,322 INFO L131 PetriNetUnfolder]: For 213/217 co-relation queries the response was YES. [2022-11-16 11:55:18,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 491 conditions, 191 events. 5/191 cut-off events. For 213/217 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 765 event pairs, 1 based on Foata normal form. 2/191 useless extension candidates. Maximal degree in co-relation 472. Up to 33 conditions per place. [2022-11-16 11:55:18,324 INFO L137 encePairwiseOnDemand]: 72/81 looper letters, 35 selfloop transitions, 6 changer transitions 10/93 dead transitions. [2022-11-16 11:55:18,324 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 93 transitions, 501 flow [2022-11-16 11:55:18,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:55:18,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 11:55:18,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 584 transitions. [2022-11-16 11:55:18,326 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7209876543209877 [2022-11-16 11:55:18,326 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 584 transitions. [2022-11-16 11:55:18,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 584 transitions. [2022-11-16 11:55:18,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:18,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 584 transitions. [2022-11-16 11:55:18,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 58.4) internal successors, (584), 10 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:18,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states 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 11:55:18,329 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states 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 11:55:18,329 INFO L175 Difference]: Start difference. First operand has 111 places, 71 transitions, 260 flow. Second operand 10 states and 584 transitions. [2022-11-16 11:55:18,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 93 transitions, 501 flow [2022-11-16 11:55:18,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 93 transitions, 471 flow, removed 10 selfloop flow, removed 6 redundant places. [2022-11-16 11:55:18,333 INFO L231 Difference]: Finished difference. Result has 118 places, 73 transitions, 297 flow [2022-11-16 11:55:18,333 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=297, PETRI_PLACES=118, PETRI_TRANSITIONS=73} [2022-11-16 11:55:18,334 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 44 predicate places. [2022-11-16 11:55:18,334 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 73 transitions, 297 flow [2022-11-16 11:55:18,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:18,334 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:18,334 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] [2022-11-16 11:55:18,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-16 11:55:18,335 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:55:18,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:18,335 INFO L85 PathProgramCache]: Analyzing trace with hash -271394852, now seen corresponding path program 15 times [2022-11-16 11:55:18,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:18,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103396949] [2022-11-16 11:55:18,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:18,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:18,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:18,559 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 11:55:18,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:18,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103396949] [2022-11-16 11:55:18,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103396949] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:18,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:18,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:55:18,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377684050] [2022-11-16 11:55:18,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:18,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:55:18,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:18,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:55:18,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:55:18,562 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-11-16 11:55:18,563 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 73 transitions, 297 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:18,563 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:18,564 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-11-16 11:55:18,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:18,790 INFO L130 PetriNetUnfolder]: 4/189 cut-off events. [2022-11-16 11:55:18,791 INFO L131 PetriNetUnfolder]: For 280/287 co-relation queries the response was YES. [2022-11-16 11:55:18,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 502 conditions, 189 events. 4/189 cut-off events. For 280/287 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 750 event pairs, 1 based on Foata normal form. 4/191 useless extension candidates. Maximal degree in co-relation 479. Up to 33 conditions per place. [2022-11-16 11:55:18,792 INFO L137 encePairwiseOnDemand]: 72/81 looper letters, 39 selfloop transitions, 7 changer transitions 8/96 dead transitions. [2022-11-16 11:55:18,792 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 96 transitions, 531 flow [2022-11-16 11:55:18,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:55:18,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 11:55:18,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 589 transitions. [2022-11-16 11:55:18,794 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7271604938271605 [2022-11-16 11:55:18,794 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 589 transitions. [2022-11-16 11:55:18,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 589 transitions. [2022-11-16 11:55:18,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:18,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 589 transitions. [2022-11-16 11:55:18,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 58.9) internal successors, (589), 10 states have internal predecessors, (589), 0 states have call successors, (0), 0 states 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 11:55:18,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states 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 11:55:18,798 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states 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 11:55:18,798 INFO L175 Difference]: Start difference. First operand has 118 places, 73 transitions, 297 flow. Second operand 10 states and 589 transitions. [2022-11-16 11:55:18,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 96 transitions, 531 flow [2022-11-16 11:55:18,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 96 transitions, 489 flow, removed 19 selfloop flow, removed 6 redundant places. [2022-11-16 11:55:18,802 INFO L231 Difference]: Finished difference. Result has 122 places, 74 transitions, 320 flow [2022-11-16 11:55:18,803 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=320, PETRI_PLACES=122, PETRI_TRANSITIONS=74} [2022-11-16 11:55:18,803 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 48 predicate places. [2022-11-16 11:55:18,803 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 74 transitions, 320 flow [2022-11-16 11:55:18,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:18,804 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:18,804 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] [2022-11-16 11:55:18,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-16 11:55:18,804 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:55:18,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:18,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1657943518, now seen corresponding path program 16 times [2022-11-16 11:55:18,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:18,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932311984] [2022-11-16 11:55:18,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:18,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:18,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:19,028 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 11:55:19,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:19,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932311984] [2022-11-16 11:55:19,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932311984] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:19,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:19,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:55:19,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405113681] [2022-11-16 11:55:19,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:19,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:55:19,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:19,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:55:19,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:55:19,031 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-11-16 11:55:19,032 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 74 transitions, 320 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:19,032 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:19,032 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-11-16 11:55:19,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:19,241 INFO L130 PetriNetUnfolder]: 3/167 cut-off events. [2022-11-16 11:55:19,241 INFO L131 PetriNetUnfolder]: For 243/249 co-relation queries the response was YES. [2022-11-16 11:55:19,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 456 conditions, 167 events. 3/167 cut-off events. For 243/249 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 575 event pairs, 1 based on Foata normal form. 4/169 useless extension candidates. Maximal degree in co-relation 432. Up to 31 conditions per place. [2022-11-16 11:55:19,242 INFO L137 encePairwiseOnDemand]: 72/81 looper letters, 32 selfloop transitions, 4 changer transitions 12/90 dead transitions. [2022-11-16 11:55:19,243 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 90 transitions, 500 flow [2022-11-16 11:55:19,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:55:19,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 11:55:19,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 584 transitions. [2022-11-16 11:55:19,244 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7209876543209877 [2022-11-16 11:55:19,245 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 584 transitions. [2022-11-16 11:55:19,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 584 transitions. [2022-11-16 11:55:19,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:19,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 584 transitions. [2022-11-16 11:55:19,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 58.4) internal successors, (584), 10 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:19,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states 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 11:55:19,248 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states 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 11:55:19,248 INFO L175 Difference]: Start difference. First operand has 122 places, 74 transitions, 320 flow. Second operand 10 states and 584 transitions. [2022-11-16 11:55:19,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 90 transitions, 500 flow [2022-11-16 11:55:19,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 90 transitions, 445 flow, removed 16 selfloop flow, removed 10 redundant places. [2022-11-16 11:55:19,253 INFO L231 Difference]: Finished difference. Result has 122 places, 71 transitions, 265 flow [2022-11-16 11:55:19,254 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=265, PETRI_PLACES=122, PETRI_TRANSITIONS=71} [2022-11-16 11:55:19,254 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 48 predicate places. [2022-11-16 11:55:19,255 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 71 transitions, 265 flow [2022-11-16 11:55:19,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:19,256 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:19,256 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] [2022-11-16 11:55:19,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-16 11:55:19,256 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:55:19,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:19,257 INFO L85 PathProgramCache]: Analyzing trace with hash -2142253430, now seen corresponding path program 17 times [2022-11-16 11:55:19,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:19,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403948090] [2022-11-16 11:55:19,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:19,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:19,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:19,484 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 11:55:19,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:19,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403948090] [2022-11-16 11:55:19,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403948090] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:19,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:19,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:55:19,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715233844] [2022-11-16 11:55:19,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:19,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:55:19,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:19,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:55:19,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:55:19,490 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-11-16 11:55:19,490 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 71 transitions, 265 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:19,491 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:19,491 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-11-16 11:55:19,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:19,691 INFO L130 PetriNetUnfolder]: 3/136 cut-off events. [2022-11-16 11:55:19,691 INFO L131 PetriNetUnfolder]: For 147/151 co-relation queries the response was YES. [2022-11-16 11:55:19,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 358 conditions, 136 events. 3/136 cut-off events. For 147/151 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 353 event pairs, 0 based on Foata normal form. 3/137 useless extension candidates. Maximal degree in co-relation 336. Up to 25 conditions per place. [2022-11-16 11:55:19,692 INFO L137 encePairwiseOnDemand]: 72/81 looper letters, 24 selfloop transitions, 3 changer transitions 13/82 dead transitions. [2022-11-16 11:55:19,692 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 82 transitions, 413 flow [2022-11-16 11:55:19,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:55:19,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 11:55:19,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 576 transitions. [2022-11-16 11:55:19,694 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7111111111111111 [2022-11-16 11:55:19,695 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 576 transitions. [2022-11-16 11:55:19,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 576 transitions. [2022-11-16 11:55:19,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:19,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 576 transitions. [2022-11-16 11:55:19,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states 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 11:55:19,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states 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 11:55:19,698 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states 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 11:55:19,698 INFO L175 Difference]: Start difference. First operand has 122 places, 71 transitions, 265 flow. Second operand 10 states and 576 transitions. [2022-11-16 11:55:19,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 82 transitions, 413 flow [2022-11-16 11:55:19,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 82 transitions, 378 flow, removed 10 selfloop flow, removed 12 redundant places. [2022-11-16 11:55:19,702 INFO L231 Difference]: Finished difference. Result has 115 places, 66 transitions, 201 flow [2022-11-16 11:55:19,702 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=201, PETRI_PLACES=115, PETRI_TRANSITIONS=66} [2022-11-16 11:55:19,703 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 41 predicate places. [2022-11-16 11:55:19,703 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 66 transitions, 201 flow [2022-11-16 11:55:19,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:19,703 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:19,704 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] [2022-11-16 11:55:19,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-16 11:55:19,704 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:55:19,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:19,705 INFO L85 PathProgramCache]: Analyzing trace with hash -472323191, now seen corresponding path program 7 times [2022-11-16 11:55:19,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:19,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179192982] [2022-11-16 11:55:19,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:19,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:19,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:19,918 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 11:55:19,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:19,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179192982] [2022-11-16 11:55:19,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179192982] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:19,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:19,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 11:55:19,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060297102] [2022-11-16 11:55:19,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:19,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:55:19,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:19,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:55:19,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:55:19,922 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-11-16 11:55:19,922 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 66 transitions, 201 flow. Second operand has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 11:55:19,923 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:19,923 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-11-16 11:55:19,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:20,100 INFO L130 PetriNetUnfolder]: 2/124 cut-off events. [2022-11-16 11:55:20,100 INFO L131 PetriNetUnfolder]: For 109/109 co-relation queries the response was YES. [2022-11-16 11:55:20,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 124 events. 2/124 cut-off events. For 109/109 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 271 event pairs, 2 based on Foata normal form. 1/124 useless extension candidates. Maximal degree in co-relation 285. Up to 27 conditions per place. [2022-11-16 11:55:20,101 INFO L137 encePairwiseOnDemand]: 73/81 looper letters, 28 selfloop transitions, 3 changer transitions 10/85 dead transitions. [2022-11-16 11:55:20,101 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 85 transitions, 387 flow [2022-11-16 11:55:20,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:55:20,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:55:20,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 546 transitions. [2022-11-16 11:55:20,103 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7489711934156379 [2022-11-16 11:55:20,103 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 546 transitions. [2022-11-16 11:55:20,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 546 transitions. [2022-11-16 11:55:20,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:20,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 546 transitions. [2022-11-16 11:55:20,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 60.666666666666664) internal successors, (546), 9 states have internal predecessors, (546), 0 states have call successors, (0), 0 states 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 11:55:20,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states 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 11:55:20,107 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states 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 11:55:20,107 INFO L175 Difference]: Start difference. First operand has 115 places, 66 transitions, 201 flow. Second operand 9 states and 546 transitions. [2022-11-16 11:55:20,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 85 transitions, 387 flow [2022-11-16 11:55:20,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 85 transitions, 333 flow, removed 12 selfloop flow, removed 14 redundant places. [2022-11-16 11:55:20,110 INFO L231 Difference]: Finished difference. Result has 104 places, 67 transitions, 198 flow [2022-11-16 11:55:20,110 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=198, PETRI_PLACES=104, PETRI_TRANSITIONS=67} [2022-11-16 11:55:20,110 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 30 predicate places. [2022-11-16 11:55:20,111 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 67 transitions, 198 flow [2022-11-16 11:55:20,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 11:55:20,111 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:20,111 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] [2022-11-16 11:55:20,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-16 11:55:20,112 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:55:20,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:20,112 INFO L85 PathProgramCache]: Analyzing trace with hash 142755715, now seen corresponding path program 8 times [2022-11-16 11:55:20,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:20,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694447432] [2022-11-16 11:55:20,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:20,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:20,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:20,305 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 11:55:20,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:20,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694447432] [2022-11-16 11:55:20,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694447432] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:20,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:20,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 11:55:20,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160923869] [2022-11-16 11:55:20,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:20,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:55:20,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:20,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:55:20,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:55:20,308 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-11-16 11:55:20,309 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 67 transitions, 198 flow. Second operand has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 11:55:20,309 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:20,309 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-11-16 11:55:20,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:20,514 INFO L130 PetriNetUnfolder]: 2/107 cut-off events. [2022-11-16 11:55:20,515 INFO L131 PetriNetUnfolder]: For 48/49 co-relation queries the response was YES. [2022-11-16 11:55:20,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 107 events. 2/107 cut-off events. For 48/49 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 192 event pairs, 2 based on Foata normal form. 1/106 useless extension candidates. Maximal degree in co-relation 233. Up to 27 conditions per place. [2022-11-16 11:55:20,516 INFO L137 encePairwiseOnDemand]: 73/81 looper letters, 20 selfloop transitions, 0 changer transitions 15/77 dead transitions. [2022-11-16 11:55:20,516 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 77 transitions, 323 flow [2022-11-16 11:55:20,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:55:20,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:55:20,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 538 transitions. [2022-11-16 11:55:20,518 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7379972565157751 [2022-11-16 11:55:20,518 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 538 transitions. [2022-11-16 11:55:20,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 538 transitions. [2022-11-16 11:55:20,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:20,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 538 transitions. [2022-11-16 11:55:20,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 59.77777777777778) internal successors, (538), 9 states have internal predecessors, (538), 0 states have call successors, (0), 0 states 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 11:55:20,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states 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 11:55:20,521 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states 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 11:55:20,521 INFO L175 Difference]: Start difference. First operand has 104 places, 67 transitions, 198 flow. Second operand 9 states and 538 transitions. [2022-11-16 11:55:20,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 77 transitions, 323 flow [2022-11-16 11:55:20,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 77 transitions, 297 flow, removed 10 selfloop flow, removed 7 redundant places. [2022-11-16 11:55:20,523 INFO L231 Difference]: Finished difference. Result has 106 places, 62 transitions, 161 flow [2022-11-16 11:55:20,539 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=161, PETRI_PLACES=106, PETRI_TRANSITIONS=62} [2022-11-16 11:55:20,539 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 32 predicate places. [2022-11-16 11:55:20,539 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 62 transitions, 161 flow [2022-11-16 11:55:20,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 11:55:20,540 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:20,540 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] [2022-11-16 11:55:20,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-16 11:55:20,540 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:55:20,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:20,541 INFO L85 PathProgramCache]: Analyzing trace with hash 880652994, now seen corresponding path program 18 times [2022-11-16 11:55:20,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:20,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097431782] [2022-11-16 11:55:20,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:20,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:20,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:20,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:55:20,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:20,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097431782] [2022-11-16 11:55:20,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097431782] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:20,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:20,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:55:20,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134127832] [2022-11-16 11:55:20,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:20,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:55:20,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:20,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:55:20,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:55:20,769 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-11-16 11:55:20,770 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 62 transitions, 161 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:20,770 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:20,770 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-11-16 11:55:20,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:20,950 INFO L130 PetriNetUnfolder]: 1/88 cut-off events. [2022-11-16 11:55:20,951 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2022-11-16 11:55:20,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 88 events. 1/88 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 84 event pairs, 0 based on Foata normal form. 1/89 useless extension candidates. Maximal degree in co-relation 175. Up to 11 conditions per place. [2022-11-16 11:55:20,952 INFO L137 encePairwiseOnDemand]: 72/81 looper letters, 19 selfloop transitions, 4 changer transitions 7/70 dead transitions. [2022-11-16 11:55:20,952 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 70 transitions, 260 flow [2022-11-16 11:55:20,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:55:20,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 11:55:20,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 571 transitions. [2022-11-16 11:55:20,955 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7049382716049383 [2022-11-16 11:55:20,955 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 571 transitions. [2022-11-16 11:55:20,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 571 transitions. [2022-11-16 11:55:20,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:20,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 571 transitions. [2022-11-16 11:55:20,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 57.1) internal successors, (571), 10 states have internal predecessors, (571), 0 states have call successors, (0), 0 states 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 11:55:20,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states 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 11:55:20,960 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states 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 11:55:20,960 INFO L175 Difference]: Start difference. First operand has 106 places, 62 transitions, 161 flow. Second operand 10 states and 571 transitions. [2022-11-16 11:55:20,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 70 transitions, 260 flow [2022-11-16 11:55:20,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 70 transitions, 234 flow, removed 13 selfloop flow, removed 8 redundant places. [2022-11-16 11:55:20,962 INFO L231 Difference]: Finished difference. Result has 97 places, 62 transitions, 164 flow [2022-11-16 11:55:20,963 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=164, PETRI_PLACES=97, PETRI_TRANSITIONS=62} [2022-11-16 11:55:20,963 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 23 predicate places. [2022-11-16 11:55:20,963 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 62 transitions, 164 flow [2022-11-16 11:55:20,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:20,964 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:20,964 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] [2022-11-16 11:55:20,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-11-16 11:55:20,964 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:55:20,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:20,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1759837642, now seen corresponding path program 19 times [2022-11-16 11:55:20,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:20,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324822391] [2022-11-16 11:55:20,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:20,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:20,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:21,189 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 11:55:21,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:21,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324822391] [2022-11-16 11:55:21,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324822391] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:21,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:21,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:55:21,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293338813] [2022-11-16 11:55:21,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:21,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:55:21,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:21,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:55:21,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:55:21,195 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-11-16 11:55:21,196 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 62 transitions, 164 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:21,196 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:21,196 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-11-16 11:55:21,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:21,408 INFO L130 PetriNetUnfolder]: 0/88 cut-off events. [2022-11-16 11:55:21,408 INFO L131 PetriNetUnfolder]: For 25/27 co-relation queries the response was YES. [2022-11-16 11:55:21,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 88 events. 0/88 cut-off events. For 25/27 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 90 event pairs, 0 based on Foata normal form. 1/89 useless extension candidates. Maximal degree in co-relation 0. Up to 11 conditions per place. [2022-11-16 11:55:21,409 INFO L137 encePairwiseOnDemand]: 72/81 looper letters, 19 selfloop transitions, 3 changer transitions 11/73 dead transitions. [2022-11-16 11:55:21,409 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 73 transitions, 293 flow [2022-11-16 11:55:21,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:55:21,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 11:55:21,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 574 transitions. [2022-11-16 11:55:21,411 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7086419753086419 [2022-11-16 11:55:21,411 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 574 transitions. [2022-11-16 11:55:21,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 574 transitions. [2022-11-16 11:55:21,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:21,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 574 transitions. [2022-11-16 11:55:21,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 57.4) internal successors, (574), 10 states have internal predecessors, (574), 0 states have call successors, (0), 0 states 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 11:55:21,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states 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 11:55:21,415 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states 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 11:55:21,416 INFO L175 Difference]: Start difference. First operand has 97 places, 62 transitions, 164 flow. Second operand 10 states and 574 transitions. [2022-11-16 11:55:21,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 73 transitions, 293 flow [2022-11-16 11:55:21,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 73 transitions, 261 flow, removed 9 selfloop flow, removed 9 redundant places. [2022-11-16 11:55:21,418 INFO L231 Difference]: Finished difference. Result has 99 places, 62 transitions, 165 flow [2022-11-16 11:55:21,418 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=165, PETRI_PLACES=99, PETRI_TRANSITIONS=62} [2022-11-16 11:55:21,419 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 25 predicate places. [2022-11-16 11:55:21,420 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 62 transitions, 165 flow [2022-11-16 11:55:21,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:21,421 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:21,421 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] [2022-11-16 11:55:21,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-11-16 11:55:21,422 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:55:21,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:21,422 INFO L85 PathProgramCache]: Analyzing trace with hash 263507622, now seen corresponding path program 20 times [2022-11-16 11:55:21,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:21,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457975237] [2022-11-16 11:55:21,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:21,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:21,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:21,666 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 11:55:21,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:21,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457975237] [2022-11-16 11:55:21,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457975237] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:21,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:21,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:55:21,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142077389] [2022-11-16 11:55:21,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:21,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:55:21,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:21,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:55:21,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:55:21,670 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-11-16 11:55:21,671 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 62 transitions, 165 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:21,671 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:21,671 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-11-16 11:55:21,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:21,872 INFO L130 PetriNetUnfolder]: 0/69 cut-off events. [2022-11-16 11:55:21,872 INFO L131 PetriNetUnfolder]: For 15/17 co-relation queries the response was YES. [2022-11-16 11:55:21,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 69 events. 0/69 cut-off events. For 15/17 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs, 0 based on Foata normal form. 1/70 useless extension candidates. Maximal degree in co-relation 0. Up to 11 conditions per place. [2022-11-16 11:55:21,873 INFO L137 encePairwiseOnDemand]: 72/81 looper letters, 0 selfloop transitions, 0 changer transitions 63/63 dead transitions. [2022-11-16 11:55:21,873 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 63 transitions, 237 flow [2022-11-16 11:55:21,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:55:21,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 11:55:21,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 566 transitions. [2022-11-16 11:55:21,874 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6987654320987654 [2022-11-16 11:55:21,875 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 566 transitions. [2022-11-16 11:55:21,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 566 transitions. [2022-11-16 11:55:21,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:21,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 566 transitions. [2022-11-16 11:55:21,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 56.6) internal successors, (566), 10 states have internal predecessors, (566), 0 states have call successors, (0), 0 states 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 11:55:21,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states 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 11:55:21,878 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states 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 11:55:21,878 INFO L175 Difference]: Start difference. First operand has 99 places, 62 transitions, 165 flow. Second operand 10 states and 566 transitions. [2022-11-16 11:55:21,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 63 transitions, 237 flow [2022-11-16 11:55:21,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 63 transitions, 219 flow, removed 6 selfloop flow, removed 7 redundant places. [2022-11-16 11:55:21,880 INFO L231 Difference]: Finished difference. Result has 93 places, 0 transitions, 0 flow [2022-11-16 11:55:21,880 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=93, PETRI_TRANSITIONS=0} [2022-11-16 11:55:21,881 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 19 predicate places. [2022-11-16 11:55:21,881 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 0 transitions, 0 flow [2022-11-16 11:55:21,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:21,884 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-11-16 11:55:21,885 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-11-16 11:55:21,885 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-11-16 11:55:21,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-11-16 11:55:21,886 INFO L444 BasicCegarLoop]: Path program histogram: [20, 10, 8, 4] [2022-11-16 11:55:21,889 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-16 11:55:21,889 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 11:55:21,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 11:55:21 BasicIcfg [2022-11-16 11:55:21,895 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 11:55:21,896 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 11:55:21,896 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 11:55:21,896 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 11:55:21,897 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:54:58" (3/4) ... [2022-11-16 11:55:21,900 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 11:55:21,906 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-16 11:55:21,907 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-16 11:55:21,910 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2022-11-16 11:55:21,911 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-16 11:55:21,911 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-16 11:55:21,911 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 11:55:21,941 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa46e7fa-9c32-47f4-adf5-425be1515a6e/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 11:55:21,941 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 11:55:21,942 INFO L158 Benchmark]: Toolchain (without parser) took 24638.37ms. Allocated memory was 127.9MB in the beginning and 371.2MB in the end (delta: 243.3MB). Free memory was 86.9MB in the beginning and 307.2MB in the end (delta: -220.3MB). Peak memory consumption was 22.9MB. Max. memory is 16.1GB. [2022-11-16 11:55:21,942 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 127.9MB. Free memory is still 103.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:55:21,943 INFO L158 Benchmark]: CACSL2BoogieTranslator took 396.44ms. Allocated memory is still 127.9MB. Free memory was 86.8MB in the beginning and 102.4MB in the end (delta: -15.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 11:55:21,943 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.30ms. Allocated memory is still 127.9MB. Free memory was 102.4MB in the beginning and 100.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:55:21,943 INFO L158 Benchmark]: Boogie Preprocessor took 48.97ms. Allocated memory is still 127.9MB. Free memory was 100.8MB in the beginning and 99.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:55:21,943 INFO L158 Benchmark]: RCFGBuilder took 429.15ms. Allocated memory is still 127.9MB. Free memory was 99.7MB in the beginning and 87.7MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-16 11:55:21,944 INFO L158 Benchmark]: TraceAbstraction took 23665.81ms. Allocated memory was 127.9MB in the beginning and 371.2MB in the end (delta: 243.3MB). Free memory was 86.6MB in the beginning and 310.4MB in the end (delta: -223.8MB). Peak memory consumption was 21.1MB. Max. memory is 16.1GB. [2022-11-16 11:55:21,944 INFO L158 Benchmark]: Witness Printer took 45.84ms. Allocated memory is still 371.2MB. Free memory was 310.4MB in the beginning and 307.2MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 11:55:21,945 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 127.9MB. Free memory is still 103.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 396.44ms. Allocated memory is still 127.9MB. Free memory was 86.8MB in the beginning and 102.4MB in the end (delta: -15.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.30ms. Allocated memory is still 127.9MB. Free memory was 102.4MB in the beginning and 100.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 48.97ms. Allocated memory is still 127.9MB. Free memory was 100.8MB in the beginning and 99.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 429.15ms. Allocated memory is still 127.9MB. Free memory was 99.7MB in the beginning and 87.7MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 23665.81ms. Allocated memory was 127.9MB in the beginning and 371.2MB in the end (delta: 243.3MB). Free memory was 86.6MB in the beginning and 310.4MB in the end (delta: -223.8MB). Peak memory consumption was 21.1MB. Max. memory is 16.1GB. * Witness Printer took 45.84ms. Allocated memory is still 371.2MB. Free memory was 310.4MB in the beginning and 307.2MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 76]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 101 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 23.5s, OverallIterations: 42, TraceHistogramMax: 1, PathProgramHistogramMax: 20, EmptinessCheckTime: 0.0s, AutomataDifference: 11.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2000 SdHoareTripleChecker+Valid, 3.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2000 mSDsluCounter, 4809 SdHoareTripleChecker+Invalid, 3.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3928 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4935 IncrementalHoareTripleChecker+Invalid, 4945 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 881 mSDtfsCounter, 4935 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 655 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 565 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 6.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=580occurred in iteration=25, InterpolantAutomatonStates: 408, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 10.7s InterpolantComputationTime, 2604 NumberOfCodeBlocks, 2604 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 2562 ConstructedInterpolants, 0 QuantifiedInterpolants, 15571 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 42 InterpolantComputations, 42 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-16 11:55:21,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa46e7fa-9c32-47f4-adf5-425be1515a6e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE