./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc2a3d3-feb4-4a82-80f0-d2987c2333d3/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc2a3d3-feb4-4a82-80f0-d2987c2333d3/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc2a3d3-feb4-4a82-80f0-d2987c2333d3/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc2a3d3-feb4-4a82-80f0-d2987c2333d3/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc2a3d3-feb4-4a82-80f0-d2987c2333d3/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc2a3d3-feb4-4a82-80f0-d2987c2333d3/bin/uautomizer-AkOaLMaTGY --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 57b9f50bcc1a62fff86b613ffbbe182d8b5828efa44efacd776b022a56af4d4d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 08:43:25,795 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 08:43:25,797 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 08:43:25,830 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 08:43:25,833 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 08:43:25,834 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 08:43:25,837 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 08:43:25,843 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 08:43:25,846 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 08:43:25,848 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 08:43:25,849 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 08:43:25,853 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 08:43:25,854 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 08:43:25,862 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 08:43:25,864 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 08:43:25,867 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 08:43:25,871 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 08:43:25,874 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 08:43:25,876 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 08:43:25,882 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 08:43:25,889 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 08:43:25,891 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 08:43:25,892 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 08:43:25,894 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 08:43:25,898 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 08:43:25,904 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 08:43:25,905 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 08:43:25,907 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 08:43:25,908 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 08:43:25,910 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 08:43:25,911 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 08:43:25,912 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 08:43:25,917 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 08:43:25,918 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 08:43:25,919 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 08:43:25,919 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 08:43:25,920 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 08:43:25,920 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 08:43:25,920 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 08:43:25,921 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 08:43:25,922 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 08:43:25,923 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc2a3d3-feb4-4a82-80f0-d2987c2333d3/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-07 08:43:25,957 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 08:43:25,960 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 08:43:25,961 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 08:43:25,967 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 08:43:25,968 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 08:43:25,969 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 08:43:25,969 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 08:43:25,969 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 08:43:25,970 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 08:43:25,970 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 08:43:25,971 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 08:43:25,971 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 08:43:25,972 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 08:43:25,972 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 08:43:25,972 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 08:43:25,972 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 08:43:25,973 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 08:43:25,973 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 08:43:25,973 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 08:43:25,973 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 08:43:25,974 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 08:43:25,974 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 08:43:25,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:43:25,975 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 08:43:25,975 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 08:43:25,975 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 08:43:25,976 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 08:43:25,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 08:43:25,976 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 08:43:25,978 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 08:43:25,978 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 08:43:25,979 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 08:43:25,979 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_5bc2a3d3-feb4-4a82-80f0-d2987c2333d3/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc2a3d3-feb4-4a82-80f0-d2987c2333d3/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57b9f50bcc1a62fff86b613ffbbe182d8b5828efa44efacd776b022a56af4d4d [2021-11-07 08:43:26,211 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 08:43:26,232 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 08:43:26,234 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 08:43:26,236 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 08:43:26,236 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 08:43:26,237 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc2a3d3-feb4-4a82-80f0-d2987c2333d3/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c [2021-11-07 08:43:26,307 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc2a3d3-feb4-4a82-80f0-d2987c2333d3/bin/uautomizer-AkOaLMaTGY/data/8f15f26d7/d1aa8bcdc1024922b1b2fd6b4d909c13/FLAG1a9189fc7 [2021-11-07 08:43:26,746 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 08:43:26,747 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc2a3d3-feb4-4a82-80f0-d2987c2333d3/sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c [2021-11-07 08:43:26,764 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc2a3d3-feb4-4a82-80f0-d2987c2333d3/bin/uautomizer-AkOaLMaTGY/data/8f15f26d7/d1aa8bcdc1024922b1b2fd6b4d909c13/FLAG1a9189fc7 [2021-11-07 08:43:27,109 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc2a3d3-feb4-4a82-80f0-d2987c2333d3/bin/uautomizer-AkOaLMaTGY/data/8f15f26d7/d1aa8bcdc1024922b1b2fd6b4d909c13 [2021-11-07 08:43:27,111 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 08:43:27,113 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 08:43:27,114 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 08:43:27,115 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 08:43:27,124 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 08:43:27,124 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:43:27" (1/1) ... [2021-11-07 08:43:27,125 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28a6fcf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:43:27, skipping insertion in model container [2021-11-07 08:43:27,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:43:27" (1/1) ... [2021-11-07 08:43:27,134 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 08:43:27,162 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 08:43:27,440 WARN L228 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_5bc2a3d3-feb4-4a82-80f0-d2987c2333d3/sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c[3526,3539] [2021-11-07 08:43:27,444 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:43:27,459 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 08:43:27,500 WARN L228 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_5bc2a3d3-feb4-4a82-80f0-d2987c2333d3/sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c[3526,3539] [2021-11-07 08:43:27,511 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:43:27,529 INFO L208 MainTranslator]: Completed translation [2021-11-07 08:43:27,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:43:27 WrapperNode [2021-11-07 08:43:27,531 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 08:43:27,532 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 08:43:27,532 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 08:43:27,533 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 08:43:27,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:43:27" (1/1) ... [2021-11-07 08:43:27,561 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:43:27" (1/1) ... [2021-11-07 08:43:27,600 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 08:43:27,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 08:43:27,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 08:43:27,602 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 08:43:27,611 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:43:27" (1/1) ... [2021-11-07 08:43:27,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:43:27" (1/1) ... [2021-11-07 08:43:27,624 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:43:27" (1/1) ... [2021-11-07 08:43:27,625 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:43:27" (1/1) ... [2021-11-07 08:43:27,631 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:43:27" (1/1) ... [2021-11-07 08:43:27,649 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:43:27" (1/1) ... [2021-11-07 08:43:27,651 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:43:27" (1/1) ... [2021-11-07 08:43:27,654 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 08:43:27,655 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 08:43:27,655 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 08:43:27,655 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 08:43:27,664 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:43:27" (1/1) ... [2021-11-07 08:43:27,672 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:43:27,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc2a3d3-feb4-4a82-80f0-d2987c2333d3/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:43:27,692 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc2a3d3-feb4-4a82-80f0-d2987c2333d3/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 08:43:27,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc2a3d3-feb4-4a82-80f0-d2987c2333d3/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 08:43:27,731 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-07 08:43:27,731 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-07 08:43:27,732 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-07 08:43:27,732 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-07 08:43:27,732 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-11-07 08:43:27,732 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-11-07 08:43:27,732 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-11-07 08:43:27,732 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-11-07 08:43:27,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 08:43:27,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 08:43:27,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 08:43:27,733 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-07 08:43:27,733 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-07 08:43:27,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 08:43:27,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 08:43:27,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 08:43:27,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 08:43:27,735 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-07 08:43:28,338 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 08:43:28,339 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-11-07 08:43:28,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:43:28 BoogieIcfgContainer [2021-11-07 08:43:28,342 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 08:43:28,344 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 08:43:28,346 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 08:43:28,350 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 08:43:28,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:43:27" (1/3) ... [2021-11-07 08:43:28,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39fbcc83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:43:28, skipping insertion in model container [2021-11-07 08:43:28,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:43:27" (2/3) ... [2021-11-07 08:43:28,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39fbcc83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:43:28, skipping insertion in model container [2021-11-07 08:43:28,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:43:28" (3/3) ... [2021-11-07 08:43:28,356 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-ticket-4.wvr.c [2021-11-07 08:43:28,363 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-07 08:43:28,364 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 08:43:28,364 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 08:43:28,364 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-07 08:43:28,398 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,399 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,399 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,399 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,399 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,400 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,400 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,400 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,400 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,401 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,401 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,401 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,401 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,402 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,402 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,402 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,402 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,402 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,403 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,403 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,403 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,403 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,404 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,404 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,404 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,404 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,405 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,405 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,405 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,405 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,406 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,406 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,406 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,406 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,406 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,407 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,407 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,407 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,407 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,407 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,408 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,408 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,408 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,408 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,409 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,409 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,409 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,409 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,412 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,412 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,412 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,413 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,413 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,413 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,415 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,415 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,415 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,416 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,416 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,416 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,418 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,418 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,418 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,418 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,418 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,419 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,420 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,421 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,421 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,421 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,421 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,421 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:43:28,431 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-11-07 08:43:28,482 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 08:43:28,488 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 08:43:28,489 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-07 08:43:28,503 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 145 places, 134 transitions, 300 flow [2021-11-07 08:43:28,598 INFO L129 PetriNetUnfolder]: 2/130 cut-off events. [2021-11-07 08:43:28,598 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-11-07 08:43:28,601 INFO L84 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 130 events. 2/130 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 53 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 96. Up to 2 conditions per place. [2021-11-07 08:43:28,601 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 134 transitions, 300 flow [2021-11-07 08:43:28,607 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 118 transitions, 260 flow [2021-11-07 08:43:28,640 INFO L129 PetriNetUnfolder]: 2/117 cut-off events. [2021-11-07 08:43:28,640 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-11-07 08:43:28,641 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 08:43:28,641 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:43:28,642 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-07 08:43:28,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:43:28,648 INFO L85 PathProgramCache]: Analyzing trace with hash -410649114, now seen corresponding path program 1 times [2021-11-07 08:43:28,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:43:28,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650537591] [2021-11-07 08:43:28,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:43:28,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:43:29,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:43:29,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:43:29,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:43:29,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650537591] [2021-11-07 08:43:29,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650537591] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:43:29,755 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:43:29,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-07 08:43:29,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420082577] [2021-11-07 08:43:29,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 08:43:29,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:43:29,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 08:43:29,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-07 08:43:29,793 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 134 [2021-11-07 08:43:29,802 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 118 transitions, 260 flow. Second operand has 11 states, 11 states have (on average 113.54545454545455) internal successors, (1249), 11 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:29,802 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 08:43:29,803 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 134 [2021-11-07 08:43:29,804 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 08:43:30,240 INFO L129 PetriNetUnfolder]: 40/326 cut-off events. [2021-11-07 08:43:30,240 INFO L130 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2021-11-07 08:43:30,245 INFO L84 FinitePrefix]: Finished finitePrefix Result has 459 conditions, 326 events. 40/326 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1368 event pairs, 18 based on Foata normal form. 3/312 useless extension candidates. Maximal degree in co-relation 340. Up to 49 conditions per place. [2021-11-07 08:43:30,250 INFO L132 encePairwiseOnDemand]: 117/134 looper letters, 14 selfloop transitions, 13 changer transitions 10/134 dead transitions. [2021-11-07 08:43:30,250 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 134 transitions, 366 flow [2021-11-07 08:43:30,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 08:43:30,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-11-07 08:43:30,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1385 transitions. [2021-11-07 08:43:30,277 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.861318407960199 [2021-11-07 08:43:30,278 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1385 transitions. [2021-11-07 08:43:30,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1385 transitions. [2021-11-07 08:43:30,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:43:30,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1385 transitions. [2021-11-07 08:43:30,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 115.41666666666667) internal successors, (1385), 12 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:30,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 134.0) internal successors, (1742), 13 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:30,310 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 134.0) internal successors, (1742), 13 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:30,312 INFO L186 Difference]: Start difference. First operand has 129 places, 118 transitions, 260 flow. Second operand 12 states and 1385 transitions. [2021-11-07 08:43:30,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 134 transitions, 366 flow [2021-11-07 08:43:30,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 134 transitions, 350 flow, removed 0 selfloop flow, removed 8 redundant places. [2021-11-07 08:43:30,324 INFO L242 Difference]: Finished difference. Result has 137 places, 121 transitions, 307 flow [2021-11-07 08:43:30,327 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=307, PETRI_PLACES=137, PETRI_TRANSITIONS=121} [2021-11-07 08:43:30,328 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, 8 predicate places. [2021-11-07 08:43:30,328 INFO L470 AbstractCegarLoop]: Abstraction has has 137 places, 121 transitions, 307 flow [2021-11-07 08:43:30,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 113.54545454545455) internal successors, (1249), 11 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:30,330 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 08:43:30,331 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:43:30,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 08:43:30,332 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-07 08:43:30,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:43:30,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1829404082, now seen corresponding path program 2 times [2021-11-07 08:43:30,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:43:30,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037148056] [2021-11-07 08:43:30,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:43:30,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:43:30,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:43:30,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:43:30,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:43:30,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037148056] [2021-11-07 08:43:30,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037148056] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:43:30,608 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:43:30,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 08:43:30,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971510177] [2021-11-07 08:43:30,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 08:43:30,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:43:30,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 08:43:30,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-07 08:43:30,616 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 134 [2021-11-07 08:43:30,618 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 121 transitions, 307 flow. Second operand has 7 states, 7 states have (on average 106.71428571428571) internal successors, (747), 7 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:30,618 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 08:43:30,618 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 134 [2021-11-07 08:43:30,618 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 08:43:31,529 INFO L129 PetriNetUnfolder]: 1390/3608 cut-off events. [2021-11-07 08:43:31,530 INFO L130 PetriNetUnfolder]: For 412/512 co-relation queries the response was YES. [2021-11-07 08:43:31,557 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6796 conditions, 3608 events. 1390/3608 cut-off events. For 412/512 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 31297 event pairs, 361 based on Foata normal form. 66/3475 useless extension candidates. Maximal degree in co-relation 6780. Up to 707 conditions per place. [2021-11-07 08:43:31,592 INFO L132 encePairwiseOnDemand]: 122/134 looper letters, 44 selfloop transitions, 19 changer transitions 0/158 dead transitions. [2021-11-07 08:43:31,592 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 158 transitions, 513 flow [2021-11-07 08:43:31,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 08:43:31,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-07 08:43:31,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 785 transitions. [2021-11-07 08:43:31,596 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8368869936034116 [2021-11-07 08:43:31,596 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 785 transitions. [2021-11-07 08:43:31,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 785 transitions. [2021-11-07 08:43:31,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:43:31,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 785 transitions. [2021-11-07 08:43:31,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 112.14285714285714) internal successors, (785), 7 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:31,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 134.0) internal successors, (1072), 8 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:31,604 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 134.0) internal successors, (1072), 8 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:31,604 INFO L186 Difference]: Start difference. First operand has 137 places, 121 transitions, 307 flow. Second operand 7 states and 785 transitions. [2021-11-07 08:43:31,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 158 transitions, 513 flow [2021-11-07 08:43:31,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 158 transitions, 490 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-11-07 08:43:31,617 INFO L242 Difference]: Finished difference. Result has 132 places, 137 transitions, 398 flow [2021-11-07 08:43:31,618 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=398, PETRI_PLACES=132, PETRI_TRANSITIONS=137} [2021-11-07 08:43:31,622 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, 3 predicate places. [2021-11-07 08:43:31,623 INFO L470 AbstractCegarLoop]: Abstraction has has 132 places, 137 transitions, 398 flow [2021-11-07 08:43:31,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.71428571428571) internal successors, (747), 7 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:31,624 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 08:43:31,624 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:43:31,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 08:43:31,625 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-07 08:43:31,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:43:31,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1616731496, now seen corresponding path program 3 times [2021-11-07 08:43:31,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:43:31,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992711567] [2021-11-07 08:43:31,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:43:31,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:43:31,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:43:31,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:43:31,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:43:31,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992711567] [2021-11-07 08:43:31,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992711567] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:43:31,870 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:43:31,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 08:43:31,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566386824] [2021-11-07 08:43:31,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 08:43:31,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:43:31,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 08:43:31,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 08:43:31,874 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 134 [2021-11-07 08:43:31,876 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 137 transitions, 398 flow. Second operand has 8 states, 8 states have (on average 106.25) internal successors, (850), 8 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:31,876 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 08:43:31,876 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 134 [2021-11-07 08:43:31,876 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 08:43:32,644 INFO L129 PetriNetUnfolder]: 1375/3486 cut-off events. [2021-11-07 08:43:32,645 INFO L130 PetriNetUnfolder]: For 2380/5300 co-relation queries the response was YES. [2021-11-07 08:43:32,667 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8791 conditions, 3486 events. 1375/3486 cut-off events. For 2380/5300 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 29488 event pairs, 198 based on Foata normal form. 148/3403 useless extension candidates. Maximal degree in co-relation 8493. Up to 787 conditions per place. [2021-11-07 08:43:32,698 INFO L132 encePairwiseOnDemand]: 122/134 looper letters, 46 selfloop transitions, 55 changer transitions 2/198 dead transitions. [2021-11-07 08:43:32,699 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 198 transitions, 835 flow [2021-11-07 08:43:32,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 08:43:32,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-11-07 08:43:32,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 900 transitions. [2021-11-07 08:43:32,703 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8395522388059702 [2021-11-07 08:43:32,703 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 900 transitions. [2021-11-07 08:43:32,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 900 transitions. [2021-11-07 08:43:32,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:43:32,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 900 transitions. [2021-11-07 08:43:32,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 112.5) internal successors, (900), 8 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:32,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 134.0) internal successors, (1206), 9 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:32,711 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 134.0) internal successors, (1206), 9 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:32,712 INFO L186 Difference]: Start difference. First operand has 132 places, 137 transitions, 398 flow. Second operand 8 states and 900 transitions. [2021-11-07 08:43:32,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 198 transitions, 835 flow [2021-11-07 08:43:32,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 198 transitions, 831 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-11-07 08:43:32,721 INFO L242 Difference]: Finished difference. Result has 140 places, 174 transitions, 774 flow [2021-11-07 08:43:32,722 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=774, PETRI_PLACES=140, PETRI_TRANSITIONS=174} [2021-11-07 08:43:32,723 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, 11 predicate places. [2021-11-07 08:43:32,724 INFO L470 AbstractCegarLoop]: Abstraction has has 140 places, 174 transitions, 774 flow [2021-11-07 08:43:32,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 106.25) internal successors, (850), 8 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:32,725 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 08:43:32,725 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:43:32,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 08:43:32,726 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-07 08:43:32,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:43:32,726 INFO L85 PathProgramCache]: Analyzing trace with hash 460587904, now seen corresponding path program 4 times [2021-11-07 08:43:32,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:43:32,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724514251] [2021-11-07 08:43:32,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:43:32,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:43:32,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:43:33,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:43:33,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:43:33,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724514251] [2021-11-07 08:43:33,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724514251] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:43:33,086 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:43:33,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-07 08:43:33,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640192023] [2021-11-07 08:43:33,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 08:43:33,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:43:33,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 08:43:33,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-07 08:43:33,092 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 134 [2021-11-07 08:43:33,094 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 174 transitions, 774 flow. Second operand has 10 states, 10 states have (on average 113.7) internal successors, (1137), 10 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:33,094 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 08:43:33,094 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 134 [2021-11-07 08:43:33,094 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 08:43:33,901 INFO L129 PetriNetUnfolder]: 769/2911 cut-off events. [2021-11-07 08:43:33,901 INFO L130 PetriNetUnfolder]: For 4571/6869 co-relation queries the response was YES. [2021-11-07 08:43:33,925 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8132 conditions, 2911 events. 769/2911 cut-off events. For 4571/6869 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 28842 event pairs, 91 based on Foata normal form. 103/2875 useless extension candidates. Maximal degree in co-relation 7704. Up to 542 conditions per place. [2021-11-07 08:43:33,944 INFO L132 encePairwiseOnDemand]: 122/134 looper letters, 19 selfloop transitions, 15 changer transitions 4/187 dead transitions. [2021-11-07 08:43:33,945 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 187 transitions, 912 flow [2021-11-07 08:43:33,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 08:43:33,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-11-07 08:43:33,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1152 transitions. [2021-11-07 08:43:33,950 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8597014925373134 [2021-11-07 08:43:33,950 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1152 transitions. [2021-11-07 08:43:33,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1152 transitions. [2021-11-07 08:43:33,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:43:33,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1152 transitions. [2021-11-07 08:43:33,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 115.2) internal successors, (1152), 10 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:33,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 134.0) internal successors, (1474), 11 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:33,960 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 134.0) internal successors, (1474), 11 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:33,960 INFO L186 Difference]: Start difference. First operand has 140 places, 174 transitions, 774 flow. Second operand 10 states and 1152 transitions. [2021-11-07 08:43:33,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 187 transitions, 912 flow [2021-11-07 08:43:33,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 187 transitions, 898 flow, removed 5 selfloop flow, removed 2 redundant places. [2021-11-07 08:43:33,979 INFO L242 Difference]: Finished difference. Result has 152 places, 180 transitions, 856 flow [2021-11-07 08:43:33,979 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=856, PETRI_PLACES=152, PETRI_TRANSITIONS=180} [2021-11-07 08:43:33,980 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, 23 predicate places. [2021-11-07 08:43:33,980 INFO L470 AbstractCegarLoop]: Abstraction has has 152 places, 180 transitions, 856 flow [2021-11-07 08:43:33,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 113.7) internal successors, (1137), 10 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:33,981 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 08:43:33,981 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:43:33,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 08:43:33,982 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-07 08:43:33,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:43:33,982 INFO L85 PathProgramCache]: Analyzing trace with hash -507858714, now seen corresponding path program 5 times [2021-11-07 08:43:33,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:43:33,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544549201] [2021-11-07 08:43:33,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:43:33,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:43:34,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:43:34,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:43:34,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:43:34,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544549201] [2021-11-07 08:43:34,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544549201] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:43:34,180 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:43:34,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-07 08:43:34,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512612402] [2021-11-07 08:43:34,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 08:43:34,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:43:34,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 08:43:34,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-07 08:43:34,184 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 134 [2021-11-07 08:43:34,186 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 180 transitions, 856 flow. Second operand has 9 states, 9 states have (on average 105.88888888888889) internal successors, (953), 9 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:34,186 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 08:43:34,186 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 134 [2021-11-07 08:43:34,187 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 08:43:35,433 INFO L129 PetriNetUnfolder]: 1713/4389 cut-off events. [2021-11-07 08:43:35,433 INFO L130 PetriNetUnfolder]: For 12461/24190 co-relation queries the response was YES. [2021-11-07 08:43:35,478 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15636 conditions, 4389 events. 1713/4389 cut-off events. For 12461/24190 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 39485 event pairs, 185 based on Foata normal form. 157/4276 useless extension candidates. Maximal degree in co-relation 15607. Up to 964 conditions per place. [2021-11-07 08:43:35,513 INFO L132 encePairwiseOnDemand]: 122/134 looper letters, 42 selfloop transitions, 99 changer transitions 3/246 dead transitions. [2021-11-07 08:43:35,514 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 246 transitions, 1557 flow [2021-11-07 08:43:35,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 08:43:35,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-11-07 08:43:35,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1115 transitions. [2021-11-07 08:43:35,520 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.832089552238806 [2021-11-07 08:43:35,520 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1115 transitions. [2021-11-07 08:43:35,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1115 transitions. [2021-11-07 08:43:35,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:43:35,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1115 transitions. [2021-11-07 08:43:35,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 111.5) internal successors, (1115), 10 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:35,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 134.0) internal successors, (1474), 11 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:35,531 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 134.0) internal successors, (1474), 11 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:35,532 INFO L186 Difference]: Start difference. First operand has 152 places, 180 transitions, 856 flow. Second operand 10 states and 1115 transitions. [2021-11-07 08:43:35,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 246 transitions, 1557 flow [2021-11-07 08:43:35,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 246 transitions, 1514 flow, removed 14 selfloop flow, removed 6 redundant places. [2021-11-07 08:43:35,561 INFO L242 Difference]: Finished difference. Result has 156 places, 220 transitions, 1442 flow [2021-11-07 08:43:35,562 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=817, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1442, PETRI_PLACES=156, PETRI_TRANSITIONS=220} [2021-11-07 08:43:35,562 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, 27 predicate places. [2021-11-07 08:43:35,562 INFO L470 AbstractCegarLoop]: Abstraction has has 156 places, 220 transitions, 1442 flow [2021-11-07 08:43:35,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 105.88888888888889) internal successors, (953), 9 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:35,563 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 08:43:35,564 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:43:35,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 08:43:35,564 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-07 08:43:35,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:43:35,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1746384870, now seen corresponding path program 6 times [2021-11-07 08:43:35,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:43:35,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291870040] [2021-11-07 08:43:35,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:43:35,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:43:35,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:43:35,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:43:35,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:43:35,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291870040] [2021-11-07 08:43:35,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291870040] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:43:35,761 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:43:35,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-07 08:43:35,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703159168] [2021-11-07 08:43:35,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 08:43:35,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:43:35,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 08:43:35,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-07 08:43:35,765 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 134 [2021-11-07 08:43:35,766 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 220 transitions, 1442 flow. Second operand has 10 states, 10 states have (on average 105.6) internal successors, (1056), 10 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:35,767 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 08:43:35,767 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 134 [2021-11-07 08:43:35,767 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 08:43:37,100 INFO L129 PetriNetUnfolder]: 1879/4897 cut-off events. [2021-11-07 08:43:37,101 INFO L130 PetriNetUnfolder]: For 23726/42957 co-relation queries the response was YES. [2021-11-07 08:43:37,147 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20326 conditions, 4897 events. 1879/4897 cut-off events. For 23726/42957 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 45875 event pairs, 193 based on Foata normal form. 336/4961 useless extension candidates. Maximal degree in co-relation 19840. Up to 986 conditions per place. [2021-11-07 08:43:37,188 INFO L132 encePairwiseOnDemand]: 122/134 looper letters, 48 selfloop transitions, 113 changer transitions 1/264 dead transitions. [2021-11-07 08:43:37,188 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 264 transitions, 2066 flow [2021-11-07 08:43:37,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 08:43:37,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-11-07 08:43:37,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1228 transitions. [2021-11-07 08:43:37,194 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8331071913161465 [2021-11-07 08:43:37,194 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1228 transitions. [2021-11-07 08:43:37,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1228 transitions. [2021-11-07 08:43:37,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:43:37,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1228 transitions. [2021-11-07 08:43:37,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 111.63636363636364) internal successors, (1228), 11 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:37,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 134.0) internal successors, (1608), 12 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:37,207 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 134.0) internal successors, (1608), 12 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:37,207 INFO L186 Difference]: Start difference. First operand has 156 places, 220 transitions, 1442 flow. Second operand 11 states and 1228 transitions. [2021-11-07 08:43:37,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 264 transitions, 2066 flow [2021-11-07 08:43:37,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 264 transitions, 2037 flow, removed 10 selfloop flow, removed 3 redundant places. [2021-11-07 08:43:37,269 INFO L242 Difference]: Finished difference. Result has 165 places, 234 transitions, 1846 flow [2021-11-07 08:43:37,269 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=1413, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1846, PETRI_PLACES=165, PETRI_TRANSITIONS=234} [2021-11-07 08:43:37,270 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, 36 predicate places. [2021-11-07 08:43:37,270 INFO L470 AbstractCegarLoop]: Abstraction has has 165 places, 234 transitions, 1846 flow [2021-11-07 08:43:37,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 105.6) internal successors, (1056), 10 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:37,271 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 08:43:37,271 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:43:37,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 08:43:37,271 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-07 08:43:37,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:43:37,272 INFO L85 PathProgramCache]: Analyzing trace with hash 484396320, now seen corresponding path program 7 times [2021-11-07 08:43:37,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:43:37,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339186156] [2021-11-07 08:43:37,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:43:37,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:43:37,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:43:37,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:43:37,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:43:37,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339186156] [2021-11-07 08:43:37,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339186156] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:43:37,423 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:43:37,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 08:43:37,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247484669] [2021-11-07 08:43:37,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 08:43:37,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:43:37,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 08:43:37,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 08:43:37,426 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 134 [2021-11-07 08:43:37,428 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 234 transitions, 1846 flow. Second operand has 8 states, 8 states have (on average 106.25) internal successors, (850), 8 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:37,428 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 08:43:37,428 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 134 [2021-11-07 08:43:37,428 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 08:43:38,762 INFO L129 PetriNetUnfolder]: 1866/5048 cut-off events. [2021-11-07 08:43:38,762 INFO L130 PetriNetUnfolder]: For 32291/57670 co-relation queries the response was YES. [2021-11-07 08:43:38,807 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22362 conditions, 5048 events. 1866/5048 cut-off events. For 32291/57670 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 48354 event pairs, 229 based on Foata normal form. 355/5169 useless extension candidates. Maximal degree in co-relation 21849. Up to 1172 conditions per place. [2021-11-07 08:43:38,837 INFO L132 encePairwiseOnDemand]: 122/134 looper letters, 54 selfloop transitions, 108 changer transitions 3/267 dead transitions. [2021-11-07 08:43:38,838 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 267 transitions, 2451 flow [2021-11-07 08:43:38,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 08:43:38,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-11-07 08:43:38,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 899 transitions. [2021-11-07 08:43:38,842 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8386194029850746 [2021-11-07 08:43:38,842 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 899 transitions. [2021-11-07 08:43:38,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 899 transitions. [2021-11-07 08:43:38,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:43:38,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 899 transitions. [2021-11-07 08:43:38,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 112.375) internal successors, (899), 8 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:38,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 134.0) internal successors, (1206), 9 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:38,849 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 134.0) internal successors, (1206), 9 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:38,850 INFO L186 Difference]: Start difference. First operand has 165 places, 234 transitions, 1846 flow. Second operand 8 states and 899 transitions. [2021-11-07 08:43:38,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 267 transitions, 2451 flow [2021-11-07 08:43:38,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 267 transitions, 2337 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-11-07 08:43:38,924 INFO L242 Difference]: Finished difference. Result has 168 places, 243 transitions, 2090 flow [2021-11-07 08:43:38,924 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=1732, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2090, PETRI_PLACES=168, PETRI_TRANSITIONS=243} [2021-11-07 08:43:38,925 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, 39 predicate places. [2021-11-07 08:43:38,925 INFO L470 AbstractCegarLoop]: Abstraction has has 168 places, 243 transitions, 2090 flow [2021-11-07 08:43:38,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 106.25) internal successors, (850), 8 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:38,926 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 08:43:38,926 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:43:38,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 08:43:38,926 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-07 08:43:38,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:43:38,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1362721314, now seen corresponding path program 8 times [2021-11-07 08:43:38,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:43:38,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750710976] [2021-11-07 08:43:38,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:43:38,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:43:38,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:43:39,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:43:39,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:43:39,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750710976] [2021-11-07 08:43:39,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750710976] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:43:39,058 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:43:39,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 08:43:39,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759240788] [2021-11-07 08:43:39,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 08:43:39,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:43:39,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 08:43:39,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-07 08:43:39,061 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 134 [2021-11-07 08:43:39,062 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 243 transitions, 2090 flow. Second operand has 7 states, 7 states have (on average 106.71428571428571) internal successors, (747), 7 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:39,063 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 08:43:39,063 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 134 [2021-11-07 08:43:39,063 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 08:43:40,245 INFO L129 PetriNetUnfolder]: 1720/4979 cut-off events. [2021-11-07 08:43:40,246 INFO L130 PetriNetUnfolder]: For 38335/62633 co-relation queries the response was YES. [2021-11-07 08:43:40,294 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22902 conditions, 4979 events. 1720/4979 cut-off events. For 38335/62633 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 49575 event pairs, 348 based on Foata normal form. 288/5047 useless extension candidates. Maximal degree in co-relation 22421. Up to 989 conditions per place. [2021-11-07 08:43:40,323 INFO L132 encePairwiseOnDemand]: 122/134 looper letters, 86 selfloop transitions, 83 changer transitions 3/274 dead transitions. [2021-11-07 08:43:40,323 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 274 transitions, 2773 flow [2021-11-07 08:43:40,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 08:43:40,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-07 08:43:40,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 781 transitions. [2021-11-07 08:43:40,327 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8326226012793176 [2021-11-07 08:43:40,327 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 781 transitions. [2021-11-07 08:43:40,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 781 transitions. [2021-11-07 08:43:40,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:43:40,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 781 transitions. [2021-11-07 08:43:40,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 111.57142857142857) internal successors, (781), 7 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:40,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 134.0) internal successors, (1072), 8 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:40,334 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 134.0) internal successors, (1072), 8 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:40,334 INFO L186 Difference]: Start difference. First operand has 168 places, 243 transitions, 2090 flow. Second operand 7 states and 781 transitions. [2021-11-07 08:43:40,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 274 transitions, 2773 flow [2021-11-07 08:43:40,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 274 transitions, 2611 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-11-07 08:43:40,401 INFO L242 Difference]: Finished difference. Result has 171 places, 252 transitions, 2316 flow [2021-11-07 08:43:40,401 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=1942, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2316, PETRI_PLACES=171, PETRI_TRANSITIONS=252} [2021-11-07 08:43:40,402 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, 42 predicate places. [2021-11-07 08:43:40,402 INFO L470 AbstractCegarLoop]: Abstraction has has 171 places, 252 transitions, 2316 flow [2021-11-07 08:43:40,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.71428571428571) internal successors, (747), 7 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:40,403 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 08:43:40,403 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:43:40,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 08:43:40,403 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-07 08:43:40,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:43:40,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1074931672, now seen corresponding path program 9 times [2021-11-07 08:43:40,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:43:40,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825203578] [2021-11-07 08:43:40,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:43:40,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:43:40,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:43:40,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:43:40,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:43:40,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825203578] [2021-11-07 08:43:40,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825203578] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:43:40,519 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:43:40,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 08:43:40,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155133118] [2021-11-07 08:43:40,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 08:43:40,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:43:40,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 08:43:40,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-07 08:43:40,522 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 134 [2021-11-07 08:43:40,523 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 252 transitions, 2316 flow. Second operand has 7 states, 7 states have (on average 106.71428571428571) internal successors, (747), 7 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:40,523 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 08:43:40,524 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 134 [2021-11-07 08:43:40,524 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 08:43:41,259 INFO L129 PetriNetUnfolder]: 728/2393 cut-off events. [2021-11-07 08:43:41,259 INFO L130 PetriNetUnfolder]: For 19522/27883 co-relation queries the response was YES. [2021-11-07 08:43:41,284 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10791 conditions, 2393 events. 728/2393 cut-off events. For 19522/27883 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 20268 event pairs, 121 based on Foata normal form. 284/2605 useless extension candidates. Maximal degree in co-relation 10738. Up to 488 conditions per place. [2021-11-07 08:43:41,304 INFO L132 encePairwiseOnDemand]: 122/134 looper letters, 81 selfloop transitions, 91 changer transitions 1/267 dead transitions. [2021-11-07 08:43:41,304 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 267 transitions, 2873 flow [2021-11-07 08:43:41,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 08:43:41,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-07 08:43:41,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 781 transitions. [2021-11-07 08:43:41,308 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8326226012793176 [2021-11-07 08:43:41,308 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 781 transitions. [2021-11-07 08:43:41,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 781 transitions. [2021-11-07 08:43:41,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:43:41,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 781 transitions. [2021-11-07 08:43:41,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 111.57142857142857) internal successors, (781), 7 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:41,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 134.0) internal successors, (1072), 8 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:41,316 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 134.0) internal successors, (1072), 8 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:41,316 INFO L186 Difference]: Start difference. First operand has 171 places, 252 transitions, 2316 flow. Second operand 7 states and 781 transitions. [2021-11-07 08:43:41,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 267 transitions, 2873 flow [2021-11-07 08:43:41,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 267 transitions, 2729 flow, removed 8 selfloop flow, removed 10 redundant places. [2021-11-07 08:43:41,362 INFO L242 Difference]: Finished difference. Result has 167 places, 252 transitions, 2537 flow [2021-11-07 08:43:41,363 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=1955, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2537, PETRI_PLACES=167, PETRI_TRANSITIONS=252} [2021-11-07 08:43:41,363 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, 38 predicate places. [2021-11-07 08:43:41,363 INFO L470 AbstractCegarLoop]: Abstraction has has 167 places, 252 transitions, 2537 flow [2021-11-07 08:43:41,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.71428571428571) internal successors, (747), 7 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:41,364 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 08:43:41,364 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:43:41,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 08:43:41,365 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-07 08:43:41,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:43:41,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1383671908, now seen corresponding path program 10 times [2021-11-07 08:43:41,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:43:41,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40154132] [2021-11-07 08:43:41,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:43:41,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:43:41,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:43:41,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:43:41,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:43:41,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40154132] [2021-11-07 08:43:41,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40154132] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:43:41,542 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:43:41,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-07 08:43:41,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702919809] [2021-11-07 08:43:41,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 08:43:41,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:43:41,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 08:43:41,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-07 08:43:41,550 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 134 [2021-11-07 08:43:41,551 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 252 transitions, 2537 flow. Second operand has 9 states, 9 states have (on average 105.88888888888889) internal successors, (953), 9 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:41,552 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 08:43:41,552 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 134 [2021-11-07 08:43:41,552 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 08:43:42,318 INFO L129 PetriNetUnfolder]: 661/2307 cut-off events. [2021-11-07 08:43:42,318 INFO L130 PetriNetUnfolder]: For 18791/29337 co-relation queries the response was YES. [2021-11-07 08:43:42,341 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10552 conditions, 2307 events. 661/2307 cut-off events. For 18791/29337 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 19664 event pairs, 60 based on Foata normal form. 391/2613 useless extension candidates. Maximal degree in co-relation 10129. Up to 478 conditions per place. [2021-11-07 08:43:42,357 INFO L132 encePairwiseOnDemand]: 122/134 looper letters, 65 selfloop transitions, 132 changer transitions 9/300 dead transitions. [2021-11-07 08:43:42,358 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 300 transitions, 3448 flow [2021-11-07 08:43:42,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 08:43:42,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-11-07 08:43:42,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1124 transitions. [2021-11-07 08:43:42,363 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8388059701492537 [2021-11-07 08:43:42,363 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1124 transitions. [2021-11-07 08:43:42,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1124 transitions. [2021-11-07 08:43:42,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:43:42,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1124 transitions. [2021-11-07 08:43:42,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 112.4) internal successors, (1124), 10 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:42,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 134.0) internal successors, (1474), 11 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:42,373 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 134.0) internal successors, (1474), 11 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:42,373 INFO L186 Difference]: Start difference. First operand has 167 places, 252 transitions, 2537 flow. Second operand 10 states and 1124 transitions. [2021-11-07 08:43:42,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 300 transitions, 3448 flow [2021-11-07 08:43:42,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 300 transitions, 3285 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-11-07 08:43:42,415 INFO L242 Difference]: Finished difference. Result has 173 places, 259 transitions, 2808 flow [2021-11-07 08:43:42,416 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=2399, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2808, PETRI_PLACES=173, PETRI_TRANSITIONS=259} [2021-11-07 08:43:42,417 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, 44 predicate places. [2021-11-07 08:43:42,417 INFO L470 AbstractCegarLoop]: Abstraction has has 173 places, 259 transitions, 2808 flow [2021-11-07 08:43:42,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 105.88888888888889) internal successors, (953), 9 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:42,418 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 08:43:42,419 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:43:42,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 08:43:42,419 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-07 08:43:42,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:43:42,421 INFO L85 PathProgramCache]: Analyzing trace with hash 761347908, now seen corresponding path program 11 times [2021-11-07 08:43:42,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:43:42,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352586519] [2021-11-07 08:43:42,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:43:42,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:43:42,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:43:42,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:43:42,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:43:42,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352586519] [2021-11-07 08:43:42,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352586519] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:43:42,589 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:43:42,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-07 08:43:42,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353776969] [2021-11-07 08:43:42,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 08:43:42,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:43:42,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 08:43:42,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-07 08:43:42,596 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 134 [2021-11-07 08:43:42,597 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 259 transitions, 2808 flow. Second operand has 9 states, 9 states have (on average 105.88888888888889) internal successors, (953), 9 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:42,598 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 08:43:42,598 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 134 [2021-11-07 08:43:42,598 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 08:43:43,097 INFO L129 PetriNetUnfolder]: 427/1655 cut-off events. [2021-11-07 08:43:43,098 INFO L130 PetriNetUnfolder]: For 15031/26154 co-relation queries the response was YES. [2021-11-07 08:43:43,110 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8341 conditions, 1655 events. 427/1655 cut-off events. For 15031/26154 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 13247 event pairs, 26 based on Foata normal form. 378/1976 useless extension candidates. Maximal degree in co-relation 8031. Up to 385 conditions per place. [2021-11-07 08:43:43,123 INFO L132 encePairwiseOnDemand]: 122/134 looper letters, 61 selfloop transitions, 124 changer transitions 27/306 dead transitions. [2021-11-07 08:43:43,123 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 306 transitions, 3807 flow [2021-11-07 08:43:43,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 08:43:43,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-11-07 08:43:43,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1122 transitions. [2021-11-07 08:43:43,132 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8373134328358209 [2021-11-07 08:43:43,132 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1122 transitions. [2021-11-07 08:43:43,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1122 transitions. [2021-11-07 08:43:43,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:43:43,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1122 transitions. [2021-11-07 08:43:43,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 112.2) internal successors, (1122), 10 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:43,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 134.0) internal successors, (1474), 11 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:43,145 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 134.0) internal successors, (1474), 11 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:43,146 INFO L186 Difference]: Start difference. First operand has 173 places, 259 transitions, 2808 flow. Second operand 10 states and 1122 transitions. [2021-11-07 08:43:43,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 306 transitions, 3807 flow [2021-11-07 08:43:43,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 306 transitions, 3414 flow, removed 4 selfloop flow, removed 8 redundant places. [2021-11-07 08:43:43,189 INFO L242 Difference]: Finished difference. Result has 176 places, 250 transitions, 2642 flow [2021-11-07 08:43:43,190 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=2413, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2642, PETRI_PLACES=176, PETRI_TRANSITIONS=250} [2021-11-07 08:43:43,190 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, 47 predicate places. [2021-11-07 08:43:43,191 INFO L470 AbstractCegarLoop]: Abstraction has has 176 places, 250 transitions, 2642 flow [2021-11-07 08:43:43,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 105.88888888888889) internal successors, (953), 9 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:43,192 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 08:43:43,192 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:43:43,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-07 08:43:43,193 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-07 08:43:43,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:43:43,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1529713992, now seen corresponding path program 12 times [2021-11-07 08:43:43,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:43:43,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492711642] [2021-11-07 08:43:43,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:43:43,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:43:43,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:43:43,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:43:43,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:43:43,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492711642] [2021-11-07 08:43:43,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492711642] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:43:43,361 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:43:43,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-07 08:43:43,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093051820] [2021-11-07 08:43:43,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 08:43:43,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:43:43,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 08:43:43,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-07 08:43:43,364 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 134 [2021-11-07 08:43:43,366 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 250 transitions, 2642 flow. Second operand has 10 states, 10 states have (on average 105.6) internal successors, (1056), 10 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:43,366 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 08:43:43,367 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 134 [2021-11-07 08:43:43,367 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 08:43:43,847 INFO L129 PetriNetUnfolder]: 346/1481 cut-off events. [2021-11-07 08:43:43,847 INFO L130 PetriNetUnfolder]: For 12056/18003 co-relation queries the response was YES. [2021-11-07 08:43:43,860 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7143 conditions, 1481 events. 346/1481 cut-off events. For 12056/18003 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 11857 event pairs, 26 based on Foata normal form. 210/1646 useless extension candidates. Maximal degree in co-relation 6835. Up to 322 conditions per place. [2021-11-07 08:43:43,868 INFO L132 encePairwiseOnDemand]: 122/134 looper letters, 45 selfloop transitions, 125 changer transitions 27/291 dead transitions. [2021-11-07 08:43:43,869 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 291 transitions, 3459 flow [2021-11-07 08:43:43,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 08:43:43,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-11-07 08:43:43,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1223 transitions. [2021-11-07 08:43:43,872 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8297150610583447 [2021-11-07 08:43:43,873 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1223 transitions. [2021-11-07 08:43:43,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1223 transitions. [2021-11-07 08:43:43,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:43:43,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1223 transitions. [2021-11-07 08:43:43,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 111.18181818181819) internal successors, (1223), 11 states have internal predecessors, (1223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:43,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 134.0) internal successors, (1608), 12 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:43,883 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 134.0) internal successors, (1608), 12 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:43,883 INFO L186 Difference]: Start difference. First operand has 176 places, 250 transitions, 2642 flow. Second operand 11 states and 1223 transitions. [2021-11-07 08:43:43,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 291 transitions, 3459 flow [2021-11-07 08:43:43,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 291 transitions, 3337 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-11-07 08:43:43,925 INFO L242 Difference]: Finished difference. Result has 182 places, 238 transitions, 2565 flow [2021-11-07 08:43:43,925 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=2530, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2565, PETRI_PLACES=182, PETRI_TRANSITIONS=238} [2021-11-07 08:43:43,926 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, 53 predicate places. [2021-11-07 08:43:43,926 INFO L470 AbstractCegarLoop]: Abstraction has has 182 places, 238 transitions, 2565 flow [2021-11-07 08:43:43,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 105.6) internal successors, (1056), 10 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:43,928 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 08:43:43,928 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:43:43,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-07 08:43:43,928 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-07 08:43:43,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:43:43,929 INFO L85 PathProgramCache]: Analyzing trace with hash 878348, now seen corresponding path program 13 times [2021-11-07 08:43:43,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:43:43,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186492317] [2021-11-07 08:43:43,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:43:43,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:43:43,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:43:44,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:43:44,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:43:44,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186492317] [2021-11-07 08:43:44,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186492317] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:43:44,153 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:43:44,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-07 08:43:44,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358926586] [2021-11-07 08:43:44,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 08:43:44,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:43:44,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 08:43:44,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-07 08:43:44,162 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 134 [2021-11-07 08:43:44,164 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 238 transitions, 2565 flow. Second operand has 11 states, 11 states have (on average 97.18181818181819) internal successors, (1069), 11 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:44,164 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 08:43:44,165 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 134 [2021-11-07 08:43:44,165 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 08:43:45,015 INFO L129 PetriNetUnfolder]: 573/1903 cut-off events. [2021-11-07 08:43:45,015 INFO L130 PetriNetUnfolder]: For 17111/26718 co-relation queries the response was YES. [2021-11-07 08:43:45,031 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10156 conditions, 1903 events. 573/1903 cut-off events. For 17111/26718 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 14816 event pairs, 109 based on Foata normal form. 59/1929 useless extension candidates. Maximal degree in co-relation 9847. Up to 446 conditions per place. [2021-11-07 08:43:45,043 INFO L132 encePairwiseOnDemand]: 122/134 looper letters, 143 selfloop transitions, 112 changer transitions 34/368 dead transitions. [2021-11-07 08:43:45,043 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 368 transitions, 4484 flow [2021-11-07 08:43:45,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 08:43:45,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-11-07 08:43:45,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1466 transitions. [2021-11-07 08:43:45,047 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7814498933901919 [2021-11-07 08:43:45,048 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1466 transitions. [2021-11-07 08:43:45,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1466 transitions. [2021-11-07 08:43:45,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:43:45,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1466 transitions. [2021-11-07 08:43:45,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 104.71428571428571) internal successors, (1466), 14 states have internal predecessors, (1466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:45,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 134.0) internal successors, (2010), 15 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:45,059 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 134.0) internal successors, (2010), 15 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:45,059 INFO L186 Difference]: Start difference. First operand has 182 places, 238 transitions, 2565 flow. Second operand 14 states and 1466 transitions. [2021-11-07 08:43:45,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 368 transitions, 4484 flow [2021-11-07 08:43:45,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 368 transitions, 4248 flow, removed 18 selfloop flow, removed 7 redundant places. [2021-11-07 08:43:45,120 INFO L242 Difference]: Finished difference. Result has 193 places, 260 transitions, 3190 flow [2021-11-07 08:43:45,121 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=2417, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3190, PETRI_PLACES=193, PETRI_TRANSITIONS=260} [2021-11-07 08:43:45,121 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, 64 predicate places. [2021-11-07 08:43:45,121 INFO L470 AbstractCegarLoop]: Abstraction has has 193 places, 260 transitions, 3190 flow [2021-11-07 08:43:45,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 97.18181818181819) internal successors, (1069), 11 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:45,123 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 08:43:45,123 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:43:45,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-07 08:43:45,123 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-07 08:43:45,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:43:45,124 INFO L85 PathProgramCache]: Analyzing trace with hash -871472488, now seen corresponding path program 14 times [2021-11-07 08:43:45,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:43:45,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529583540] [2021-11-07 08:43:45,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:43:45,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:43:45,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:43:45,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:43:45,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:43:45,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529583540] [2021-11-07 08:43:45,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529583540] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:43:45,258 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:43:45,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-07 08:43:45,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44766433] [2021-11-07 08:43:45,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 08:43:45,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:43:45,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 08:43:45,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-07 08:43:45,262 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 134 [2021-11-07 08:43:45,264 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 260 transitions, 3190 flow. Second operand has 11 states, 11 states have (on average 105.36363636363636) internal successors, (1159), 11 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:45,264 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 08:43:45,264 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 134 [2021-11-07 08:43:45,265 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 08:43:45,825 INFO L129 PetriNetUnfolder]: 299/1417 cut-off events. [2021-11-07 08:43:45,825 INFO L130 PetriNetUnfolder]: For 16594/22016 co-relation queries the response was YES. [2021-11-07 08:43:45,835 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7198 conditions, 1417 events. 299/1417 cut-off events. For 16594/22016 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 11575 event pairs, 32 based on Foata normal form. 227/1601 useless extension candidates. Maximal degree in co-relation 6892. Up to 270 conditions per place. [2021-11-07 08:43:45,840 INFO L132 encePairwiseOnDemand]: 122/134 looper letters, 42 selfloop transitions, 139 changer transitions 34/309 dead transitions. [2021-11-07 08:43:45,840 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 309 transitions, 4164 flow [2021-11-07 08:43:45,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 08:43:45,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-11-07 08:43:45,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1548 transitions. [2021-11-07 08:43:45,847 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8251599147121536 [2021-11-07 08:43:45,848 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1548 transitions. [2021-11-07 08:43:45,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1548 transitions. [2021-11-07 08:43:45,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:43:45,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1548 transitions. [2021-11-07 08:43:45,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 110.57142857142857) internal successors, (1548), 14 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:45,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 134.0) internal successors, (2010), 15 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:45,862 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 134.0) internal successors, (2010), 15 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:45,863 INFO L186 Difference]: Start difference. First operand has 193 places, 260 transitions, 3190 flow. Second operand 14 states and 1548 transitions. [2021-11-07 08:43:45,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 309 transitions, 4164 flow [2021-11-07 08:43:45,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 309 transitions, 4095 flow, removed 8 selfloop flow, removed 5 redundant places. [2021-11-07 08:43:45,912 INFO L242 Difference]: Finished difference. Result has 202 places, 252 transitions, 3261 flow [2021-11-07 08:43:45,913 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=3130, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3261, PETRI_PLACES=202, PETRI_TRANSITIONS=252} [2021-11-07 08:43:45,913 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, 73 predicate places. [2021-11-07 08:43:45,913 INFO L470 AbstractCegarLoop]: Abstraction has has 202 places, 252 transitions, 3261 flow [2021-11-07 08:43:45,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 105.36363636363636) internal successors, (1159), 11 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:45,914 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 08:43:45,914 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:43:45,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-07 08:43:45,915 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-07 08:43:45,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:43:45,915 INFO L85 PathProgramCache]: Analyzing trace with hash -745961090, now seen corresponding path program 15 times [2021-11-07 08:43:45,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:43:45,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353843305] [2021-11-07 08:43:45,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:43:45,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:43:45,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:43:46,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:43:46,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:43:46,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353843305] [2021-11-07 08:43:46,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353843305] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:43:46,062 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:43:46,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-07 08:43:46,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211181003] [2021-11-07 08:43:46,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 08:43:46,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:43:46,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 08:43:46,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-07 08:43:46,066 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 134 [2021-11-07 08:43:46,068 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 252 transitions, 3261 flow. Second operand has 11 states, 11 states have (on average 105.36363636363636) internal successors, (1159), 11 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:46,068 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 08:43:46,068 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 134 [2021-11-07 08:43:46,068 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 08:43:46,610 INFO L129 PetriNetUnfolder]: 267/1330 cut-off events. [2021-11-07 08:43:46,610 INFO L130 PetriNetUnfolder]: For 17828/23128 co-relation queries the response was YES. [2021-11-07 08:43:46,618 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7098 conditions, 1330 events. 267/1330 cut-off events. For 17828/23128 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 10862 event pairs, 29 based on Foata normal form. 242/1534 useless extension candidates. Maximal degree in co-relation 6792. Up to 245 conditions per place. [2021-11-07 08:43:46,624 INFO L132 encePairwiseOnDemand]: 122/134 looper letters, 45 selfloop transitions, 139 changer transitions 21/298 dead transitions. [2021-11-07 08:43:46,624 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 298 transitions, 4209 flow [2021-11-07 08:43:46,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 08:43:46,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-11-07 08:43:46,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1546 transitions. [2021-11-07 08:43:46,629 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.82409381663113 [2021-11-07 08:43:46,630 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1546 transitions. [2021-11-07 08:43:46,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1546 transitions. [2021-11-07 08:43:46,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:43:46,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1546 transitions. [2021-11-07 08:43:46,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 110.42857142857143) internal successors, (1546), 14 states have internal predecessors, (1546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:46,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 134.0) internal successors, (2010), 15 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:46,640 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 134.0) internal successors, (2010), 15 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:46,640 INFO L186 Difference]: Start difference. First operand has 202 places, 252 transitions, 3261 flow. Second operand 14 states and 1546 transitions. [2021-11-07 08:43:46,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 298 transitions, 4209 flow [2021-11-07 08:43:46,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 298 transitions, 3889 flow, removed 9 selfloop flow, removed 11 redundant places. [2021-11-07 08:43:46,682 INFO L242 Difference]: Finished difference. Result has 203 places, 249 transitions, 3206 flow [2021-11-07 08:43:46,683 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=2963, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3206, PETRI_PLACES=203, PETRI_TRANSITIONS=249} [2021-11-07 08:43:46,683 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, 74 predicate places. [2021-11-07 08:43:46,684 INFO L470 AbstractCegarLoop]: Abstraction has has 203 places, 249 transitions, 3206 flow [2021-11-07 08:43:46,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 105.36363636363636) internal successors, (1159), 11 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:46,684 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 08:43:46,685 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:43:46,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-07 08:43:46,685 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-07 08:43:46,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:43:46,686 INFO L85 PathProgramCache]: Analyzing trace with hash 2086497558, now seen corresponding path program 16 times [2021-11-07 08:43:46,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:43:46,686 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859810993] [2021-11-07 08:43:46,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:43:46,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:43:46,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:43:46,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:43:46,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:43:46,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859810993] [2021-11-07 08:43:46,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859810993] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:43:46,822 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:43:46,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-07 08:43:46,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303101673] [2021-11-07 08:43:46,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 08:43:46,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:43:46,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 08:43:46,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-07 08:43:46,826 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 134 [2021-11-07 08:43:46,828 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 249 transitions, 3206 flow. Second operand has 11 states, 11 states have (on average 105.36363636363636) internal successors, (1159), 11 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:46,828 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 08:43:46,828 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 134 [2021-11-07 08:43:46,828 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 08:43:47,065 INFO L129 PetriNetUnfolder]: 52/341 cut-off events. [2021-11-07 08:43:47,065 INFO L130 PetriNetUnfolder]: For 4876/5783 co-relation queries the response was YES. [2021-11-07 08:43:47,066 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2225 conditions, 341 events. 52/341 cut-off events. For 4876/5783 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 1841 event pairs, 0 based on Foata normal form. 133/470 useless extension candidates. Maximal degree in co-relation 2098. Up to 85 conditions per place. [2021-11-07 08:43:47,067 INFO L132 encePairwiseOnDemand]: 124/134 looper letters, 0 selfloop transitions, 0 changer transitions 169/169 dead transitions. [2021-11-07 08:43:47,067 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 169 transitions, 2181 flow [2021-11-07 08:43:47,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 08:43:47,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-11-07 08:43:47,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1506 transitions. [2021-11-07 08:43:47,072 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.802771855010661 [2021-11-07 08:43:47,072 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1506 transitions. [2021-11-07 08:43:47,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1506 transitions. [2021-11-07 08:43:47,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:43:47,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1506 transitions. [2021-11-07 08:43:47,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 107.57142857142857) internal successors, (1506), 14 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:47,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 134.0) internal successors, (2010), 15 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:47,082 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 134.0) internal successors, (2010), 15 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:47,082 INFO L186 Difference]: Start difference. First operand has 203 places, 249 transitions, 3206 flow. Second operand 14 states and 1506 transitions. [2021-11-07 08:43:47,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 169 transitions, 2181 flow [2021-11-07 08:43:47,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 169 transitions, 2000 flow, removed 17 selfloop flow, removed 15 redundant places. [2021-11-07 08:43:47,105 INFO L242 Difference]: Finished difference. Result has 174 places, 0 transitions, 0 flow [2021-11-07 08:43:47,106 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=1600, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=0, PETRI_PLACES=174, PETRI_TRANSITIONS=0} [2021-11-07 08:43:47,106 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, 45 predicate places. [2021-11-07 08:43:47,106 INFO L470 AbstractCegarLoop]: Abstraction has has 174 places, 0 transitions, 0 flow [2021-11-07 08:43:47,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 105.36363636363636) internal successors, (1159), 11 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:47,110 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 08:43:47,110 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-11-07 08:43:47,110 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-11-07 08:43:47,111 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-11-07 08:43:47,111 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION [2021-11-07 08:43:47,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-07 08:43:47,115 INFO L731 BasicCegarLoop]: Path program histogram: [16] [2021-11-07 08:43:47,117 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-07 08:43:47,118 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 08:43:47,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:43:47 BasicIcfg [2021-11-07 08:43:47,120 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 08:43:47,121 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 08:43:47,121 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 08:43:47,121 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 08:43:47,122 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:43:28" (3/4) ... [2021-11-07 08:43:47,126 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-07 08:43:47,132 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-11-07 08:43:47,133 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-11-07 08:43:47,133 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-11-07 08:43:47,133 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread4 [2021-11-07 08:43:47,141 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-11-07 08:43:47,142 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-07 08:43:47,142 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-07 08:43:47,143 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-07 08:43:47,210 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc2a3d3-feb4-4a82-80f0-d2987c2333d3/bin/uautomizer-AkOaLMaTGY/witness.graphml [2021-11-07 08:43:47,210 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 08:43:47,212 INFO L168 Benchmark]: Toolchain (without parser) took 20098.43 ms. Allocated memory was 104.9 MB in the beginning and 2.2 GB in the end (delta: 2.1 GB). Free memory was 69.5 MB in the beginning and 1.1 GB in the end (delta: -1.0 GB). Peak memory consumption was 1.1 GB. Max. memory is 16.1 GB. [2021-11-07 08:43:47,213 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 104.9 MB. Free memory was 76.6 MB in the beginning and 76.6 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 08:43:47,214 INFO L168 Benchmark]: CACSL2BoogieTranslator took 416.62 ms. Allocated memory is still 104.9 MB. Free memory was 69.5 MB in the beginning and 78.7 MB in the end (delta: -9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 08:43:47,214 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.82 ms. Allocated memory is still 104.9 MB. Free memory was 78.7 MB in the beginning and 76.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 08:43:47,214 INFO L168 Benchmark]: Boogie Preprocessor took 52.04 ms. Allocated memory is still 104.9 MB. Free memory was 76.6 MB in the beginning and 75.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 08:43:47,215 INFO L168 Benchmark]: RCFGBuilder took 687.92 ms. Allocated memory is still 104.9 MB. Free memory was 75.6 MB in the beginning and 55.5 MB in the end (delta: 20.1 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-11-07 08:43:47,215 INFO L168 Benchmark]: TraceAbstraction took 18775.88 ms. Allocated memory was 104.9 MB in the beginning and 2.2 GB in the end (delta: 2.1 GB). Free memory was 55.0 MB in the beginning and 1.1 GB in the end (delta: -1.0 GB). Peak memory consumption was 1.1 GB. Max. memory is 16.1 GB. [2021-11-07 08:43:47,216 INFO L168 Benchmark]: Witness Printer took 89.91 ms. Allocated memory is still 2.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 08:43:47,218 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 104.9 MB. Free memory was 76.6 MB in the beginning and 76.6 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 416.62 ms. Allocated memory is still 104.9 MB. Free memory was 69.5 MB in the beginning and 78.7 MB in the end (delta: -9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 68.82 ms. Allocated memory is still 104.9 MB. Free memory was 78.7 MB in the beginning and 76.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 52.04 ms. Allocated memory is still 104.9 MB. Free memory was 76.6 MB in the beginning and 75.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 687.92 ms. Allocated memory is still 104.9 MB. Free memory was 75.6 MB in the beginning and 55.5 MB in the end (delta: 20.1 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 18775.88 ms. Allocated memory was 104.9 MB in the beginning and 2.2 GB in the end (delta: 2.1 GB). Free memory was 55.0 MB in the beginning and 1.1 GB in the end (delta: -1.0 GB). Peak memory consumption was 1.1 GB. Max. memory is 16.1 GB. * Witness Printer took 89.91 ms. Allocated memory is still 2.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 146]: 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 9 procedures, 166 locations, 5 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: 18.6s, OverallIterations: 16, TraceHistogramMax: 1, PathProgramHistogramMax: 16, EmptinessCheckTime: 0.0s, AutomataDifference: 14.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 242 SDtfs, 541 SDslu, 566 SDs, 0 SdLazy, 2825 SolverSat, 573 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 230 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3261occurred in iteration=14, InterpolantAutomatonStates: 167, 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: 0.0s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 1824 NumberOfCodeBlocks, 1824 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 1808 ConstructedInterpolants, 0 QuantifiedInterpolants, 4966 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 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! [2021-11-07 08:43:47,276 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc2a3d3-feb4-4a82-80f0-d2987c2333d3/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE