./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem13_label04.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_064d2f35-fd50-4d23-998a-cd81c05dd11c/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064d2f35-fd50-4d23-998a-cd81c05dd11c/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_064d2f35-fd50-4d23-998a-cd81c05dd11c/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064d2f35-fd50-4d23-998a-cd81c05dd11c/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem13_label04.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064d2f35-fd50-4d23-998a-cd81c05dd11c/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_064d2f35-fd50-4d23-998a-cd81c05dd11c/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 2adccaef3712b0295c8f7cfd3e1ed73b8b25a6bf1026bcea89334476cfd41a2b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 07:42:52,538 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 07:42:52,541 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 07:42:52,585 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 07:42:52,586 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 07:42:52,590 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 07:42:52,592 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 07:42:52,596 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 07:42:52,599 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 07:42:52,605 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 07:42:52,606 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 07:42:52,608 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 07:42:52,609 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 07:42:52,612 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 07:42:52,615 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 07:42:52,624 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 07:42:52,626 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 07:42:52,627 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 07:42:52,630 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 07:42:52,639 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 07:42:52,642 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 07:42:52,643 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 07:42:52,647 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 07:42:52,648 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 07:42:52,655 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 07:42:52,658 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 07:42:52,659 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 07:42:52,661 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 07:42:52,662 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 07:42:52,663 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 07:42:52,664 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 07:42:52,665 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 07:42:52,667 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 07:42:52,669 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 07:42:52,671 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 07:42:52,671 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 07:42:52,672 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 07:42:52,672 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 07:42:52,673 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 07:42:52,674 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 07:42:52,674 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 07:42:52,675 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064d2f35-fd50-4d23-998a-cd81c05dd11c/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-07 07:42:52,701 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 07:42:52,701 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 07:42:52,702 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 07:42:52,702 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 07:42:52,703 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 07:42:52,703 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 07:42:52,704 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 07:42:52,704 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 07:42:52,704 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 07:42:52,704 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 07:42:52,705 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 07:42:52,705 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 07:42:52,705 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 07:42:52,705 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 07:42:52,705 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 07:42:52,706 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 07:42:52,706 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 07:42:52,706 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 07:42:52,706 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 07:42:52,707 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 07:42:52,707 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 07:42:52,707 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 07:42:52,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:42:52,708 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 07:42:52,708 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 07:42:52,708 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 07:42:52,708 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 07:42:52,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 07:42:52,709 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 07:42:52,709 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 07:42:52,709 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 07:42:52,709 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 07:42:52,710 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_064d2f35-fd50-4d23-998a-cd81c05dd11c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064d2f35-fd50-4d23-998a-cd81c05dd11c/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2adccaef3712b0295c8f7cfd3e1ed73b8b25a6bf1026bcea89334476cfd41a2b [2021-11-07 07:42:52,971 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 07:42:53,027 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 07:42:53,029 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 07:42:53,031 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 07:42:53,046 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 07:42:53,047 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064d2f35-fd50-4d23-998a-cd81c05dd11c/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/eca-rers2012/Problem13_label04.c [2021-11-07 07:42:53,106 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064d2f35-fd50-4d23-998a-cd81c05dd11c/bin/uautomizer-AkOaLMaTGY/data/8216f93f8/ed935db3bf5c4de38b5f1b1bdd189c82/FLAGfbd89ecb3 [2021-11-07 07:42:53,989 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 07:42:53,989 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064d2f35-fd50-4d23-998a-cd81c05dd11c/sv-benchmarks/c/eca-rers2012/Problem13_label04.c [2021-11-07 07:42:54,035 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064d2f35-fd50-4d23-998a-cd81c05dd11c/bin/uautomizer-AkOaLMaTGY/data/8216f93f8/ed935db3bf5c4de38b5f1b1bdd189c82/FLAGfbd89ecb3 [2021-11-07 07:42:54,460 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064d2f35-fd50-4d23-998a-cd81c05dd11c/bin/uautomizer-AkOaLMaTGY/data/8216f93f8/ed935db3bf5c4de38b5f1b1bdd189c82 [2021-11-07 07:42:54,463 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 07:42:54,464 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 07:42:54,466 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 07:42:54,466 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 07:42:54,470 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 07:42:54,471 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:42:54" (1/1) ... [2021-11-07 07:42:54,472 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@415ae713 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:42:54, skipping insertion in model container [2021-11-07 07:42:54,472 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:42:54" (1/1) ... [2021-11-07 07:42:54,480 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 07:42:54,630 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 07:42:54,856 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_064d2f35-fd50-4d23-998a-cd81c05dd11c/sv-benchmarks/c/eca-rers2012/Problem13_label04.c[2611,2624] [2021-11-07 07:42:56,285 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:42:56,295 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 07:42:56,330 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_064d2f35-fd50-4d23-998a-cd81c05dd11c/sv-benchmarks/c/eca-rers2012/Problem13_label04.c[2611,2624] [2021-11-07 07:42:57,044 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:42:57,073 INFO L208 MainTranslator]: Completed translation [2021-11-07 07:42:57,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:42:57 WrapperNode [2021-11-07 07:42:57,075 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 07:42:57,076 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 07:42:57,077 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 07:42:57,077 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 07:42:57,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:42:57" (1/1) ... [2021-11-07 07:42:57,162 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:42:57" (1/1) ... [2021-11-07 07:42:57,870 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 07:42:57,872 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 07:42:57,872 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 07:42:57,872 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 07:42:57,895 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:42:57" (1/1) ... [2021-11-07 07:42:57,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:42:57" (1/1) ... [2021-11-07 07:42:57,963 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:42:57" (1/1) ... [2021-11-07 07:42:57,964 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:42:57" (1/1) ... [2021-11-07 07:42:58,442 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:42:57" (1/1) ... [2021-11-07 07:42:58,479 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:42:57" (1/1) ... [2021-11-07 07:42:58,552 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:42:57" (1/1) ... [2021-11-07 07:42:58,667 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 07:42:58,668 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 07:42:58,669 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 07:42:58,669 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 07:42:58,670 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:42:57" (1/1) ... [2021-11-07 07:42:58,679 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:42:58,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064d2f35-fd50-4d23-998a-cd81c05dd11c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:42:58,712 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064d2f35-fd50-4d23-998a-cd81c05dd11c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 07:42:58,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064d2f35-fd50-4d23-998a-cd81c05dd11c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 07:42:58,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 07:42:58,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 07:42:58,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 07:42:58,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 07:43:05,264 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 07:43:05,265 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-11-07 07:43:05,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:43:05 BoogieIcfgContainer [2021-11-07 07:43:05,269 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 07:43:05,275 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 07:43:05,275 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 07:43:05,279 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 07:43:05,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:42:54" (1/3) ... [2021-11-07 07:43:05,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cdf127a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:43:05, skipping insertion in model container [2021-11-07 07:43:05,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:42:57" (2/3) ... [2021-11-07 07:43:05,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cdf127a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:43:05, skipping insertion in model container [2021-11-07 07:43:05,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:43:05" (3/3) ... [2021-11-07 07:43:05,283 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label04.c [2021-11-07 07:43:05,289 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 07:43:05,289 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 07:43:05,365 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 07:43:05,374 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 07:43:05,375 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 07:43:05,430 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 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 07:43:05,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-07 07:43:05,438 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:43:05,439 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:43:05,439 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 07:43:05,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:43:05,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1657508526, now seen corresponding path program 1 times [2021-11-07 07:43:05,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:43:05,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685445795] [2021-11-07 07:43:05,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:43:05,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:43:05,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:43:05,717 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 07:43:05,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:43:05,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685445795] [2021-11-07 07:43:05,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685445795] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:43:05,719 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:43:05,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 07:43:05,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302294045] [2021-11-07 07:43:05,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:43:05,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:43:05,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:43:05,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:43:05,745 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 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 07:43:10,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:43:10,689 INFO L93 Difference]: Finished difference Result 3147 states and 5806 transitions. [2021-11-07 07:43:10,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:43:10,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-07 07:43:10,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:43:10,732 INFO L225 Difference]: With dead ends: 3147 [2021-11-07 07:43:10,732 INFO L226 Difference]: Without dead ends: 1964 [2021-11-07 07:43:10,745 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:43:10,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1964 states. [2021-11-07 07:43:10,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1964 to 1951. [2021-11-07 07:43:10,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1951 states, 1950 states have (on average 1.6538461538461537) internal successors, (3225), 1950 states have internal predecessors, (3225), 0 states have call successors, (0), 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 07:43:10,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1951 states to 1951 states and 3225 transitions. [2021-11-07 07:43:10,917 INFO L78 Accepts]: Start accepts. Automaton has 1951 states and 3225 transitions. Word has length 16 [2021-11-07 07:43:10,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:43:10,918 INFO L470 AbstractCegarLoop]: Abstraction has 1951 states and 3225 transitions. [2021-11-07 07:43:10,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 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 07:43:10,918 INFO L276 IsEmpty]: Start isEmpty. Operand 1951 states and 3225 transitions. [2021-11-07 07:43:10,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-07 07:43:10,922 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:43:10,923 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:43:10,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 07:43:10,924 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 07:43:10,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:43:10,925 INFO L85 PathProgramCache]: Analyzing trace with hash -9926837, now seen corresponding path program 1 times [2021-11-07 07:43:10,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:43:10,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720148968] [2021-11-07 07:43:10,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:43:10,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:43:11,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:43:11,191 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:43:11,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:43:11,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720148968] [2021-11-07 07:43:11,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720148968] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:43:11,192 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:43:11,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 07:43:11,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389941776] [2021-11-07 07:43:11,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:43:11,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:43:11,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:43:11,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:43:11,197 INFO L87 Difference]: Start difference. First operand 1951 states and 3225 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 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 07:43:16,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:43:16,299 INFO L93 Difference]: Finished difference Result 5540 states and 9221 transitions. [2021-11-07 07:43:16,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:43:16,299 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-07 07:43:16,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:43:16,323 INFO L225 Difference]: With dead ends: 5540 [2021-11-07 07:43:16,324 INFO L226 Difference]: Without dead ends: 3591 [2021-11-07 07:43:16,329 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:43:16,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3591 states. [2021-11-07 07:43:16,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3591 to 3581. [2021-11-07 07:43:16,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3581 states, 3580 states have (on average 1.5050279329608938) internal successors, (5388), 3580 states have internal predecessors, (5388), 0 states have call successors, (0), 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 07:43:16,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3581 states to 3581 states and 5388 transitions. [2021-11-07 07:43:16,448 INFO L78 Accepts]: Start accepts. Automaton has 3581 states and 5388 transitions. Word has length 87 [2021-11-07 07:43:16,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:43:16,449 INFO L470 AbstractCegarLoop]: Abstraction has 3581 states and 5388 transitions. [2021-11-07 07:43:16,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 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 07:43:16,450 INFO L276 IsEmpty]: Start isEmpty. Operand 3581 states and 5388 transitions. [2021-11-07 07:43:16,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-07 07:43:16,460 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:43:16,461 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:43:16,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 07:43:16,462 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 07:43:16,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:43:16,474 INFO L85 PathProgramCache]: Analyzing trace with hash 152230728, now seen corresponding path program 1 times [2021-11-07 07:43:16,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:43:16,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876976777] [2021-11-07 07:43:16,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:43:16,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:43:16,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:43:16,669 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:43:16,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:43:16,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876976777] [2021-11-07 07:43:16,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876976777] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:43:16,670 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:43:16,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 07:43:16,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130980043] [2021-11-07 07:43:16,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:43:16,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:43:16,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:43:16,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:43:16,673 INFO L87 Difference]: Start difference. First operand 3581 states and 5388 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 0 states have call successors, (0), 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 07:43:21,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:43:21,197 INFO L93 Difference]: Finished difference Result 10352 states and 15625 transitions. [2021-11-07 07:43:21,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:43:21,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-11-07 07:43:21,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:43:21,243 INFO L225 Difference]: With dead ends: 10352 [2021-11-07 07:43:21,243 INFO L226 Difference]: Without dead ends: 6773 [2021-11-07 07:43:21,251 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:43:21,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6773 states. [2021-11-07 07:43:21,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6773 to 6749. [2021-11-07 07:43:21,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6749 states, 6748 states have (on average 1.3252815649081209) internal successors, (8943), 6748 states have internal predecessors, (8943), 0 states have call successors, (0), 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 07:43:21,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6749 states to 6749 states and 8943 transitions. [2021-11-07 07:43:21,513 INFO L78 Accepts]: Start accepts. Automaton has 6749 states and 8943 transitions. Word has length 101 [2021-11-07 07:43:21,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:43:21,514 INFO L470 AbstractCegarLoop]: Abstraction has 6749 states and 8943 transitions. [2021-11-07 07:43:21,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 0 states have call successors, (0), 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 07:43:21,515 INFO L276 IsEmpty]: Start isEmpty. Operand 6749 states and 8943 transitions. [2021-11-07 07:43:21,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-07 07:43:21,531 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:43:21,532 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:43:21,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 07:43:21,533 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 07:43:21,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:43:21,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1958755326, now seen corresponding path program 1 times [2021-11-07 07:43:21,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:43:21,535 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999669962] [2021-11-07 07:43:21,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:43:21,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:43:21,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:43:21,742 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:43:21,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:43:21,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999669962] [2021-11-07 07:43:21,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999669962] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:43:21,749 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:43:21,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 07:43:21,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904210964] [2021-11-07 07:43:21,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:43:21,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:43:21,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:43:21,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:43:21,755 INFO L87 Difference]: Start difference. First operand 6749 states and 8943 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 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 07:43:25,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:43:25,646 INFO L93 Difference]: Finished difference Result 19804 states and 26220 transitions. [2021-11-07 07:43:25,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:43:25,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-07 07:43:25,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:43:25,706 INFO L225 Difference]: With dead ends: 19804 [2021-11-07 07:43:25,706 INFO L226 Difference]: Without dead ends: 13057 [2021-11-07 07:43:25,717 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:43:25,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13057 states. [2021-11-07 07:43:25,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13057 to 13052. [2021-11-07 07:43:26,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13052 states, 13051 states have (on average 1.217914336066202) internal successors, (15895), 13051 states have internal predecessors, (15895), 0 states have call successors, (0), 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 07:43:26,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13052 states to 13052 states and 15895 transitions. [2021-11-07 07:43:26,041 INFO L78 Accepts]: Start accepts. Automaton has 13052 states and 15895 transitions. Word has length 130 [2021-11-07 07:43:26,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:43:26,043 INFO L470 AbstractCegarLoop]: Abstraction has 13052 states and 15895 transitions. [2021-11-07 07:43:26,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 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 07:43:26,044 INFO L276 IsEmpty]: Start isEmpty. Operand 13052 states and 15895 transitions. [2021-11-07 07:43:26,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-11-07 07:43:26,047 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:43:26,048 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:43:26,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 07:43:26,048 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 07:43:26,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:43:26,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1184373553, now seen corresponding path program 1 times [2021-11-07 07:43:26,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:43:26,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261974505] [2021-11-07 07:43:26,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:43:26,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:43:26,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:43:26,230 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 07:43:26,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:43:26,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261974505] [2021-11-07 07:43:26,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261974505] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:43:26,231 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:43:26,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 07:43:26,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371540216] [2021-11-07 07:43:26,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:43:26,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:43:26,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:43:26,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:43:26,234 INFO L87 Difference]: Start difference. First operand 13052 states and 15895 transitions. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 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 07:43:29,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:43:29,560 INFO L93 Difference]: Finished difference Result 26889 states and 32590 transitions. [2021-11-07 07:43:29,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:43:29,568 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 208 [2021-11-07 07:43:29,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:43:29,686 INFO L225 Difference]: With dead ends: 26889 [2021-11-07 07:43:29,688 INFO L226 Difference]: Without dead ends: 13839 [2021-11-07 07:43:29,699 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:43:29,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13839 states. [2021-11-07 07:43:29,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13839 to 13839. [2021-11-07 07:43:29,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13839 states, 13838 states have (on average 1.2058823529411764) internal successors, (16687), 13838 states have internal predecessors, (16687), 0 states have call successors, (0), 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 07:43:29,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13839 states to 13839 states and 16687 transitions. [2021-11-07 07:43:29,938 INFO L78 Accepts]: Start accepts. Automaton has 13839 states and 16687 transitions. Word has length 208 [2021-11-07 07:43:29,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:43:29,939 INFO L470 AbstractCegarLoop]: Abstraction has 13839 states and 16687 transitions. [2021-11-07 07:43:29,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 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 07:43:29,939 INFO L276 IsEmpty]: Start isEmpty. Operand 13839 states and 16687 transitions. [2021-11-07 07:43:29,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-11-07 07:43:29,942 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:43:29,943 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:43:29,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 07:43:29,943 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 07:43:29,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:43:29,944 INFO L85 PathProgramCache]: Analyzing trace with hash 25568218, now seen corresponding path program 1 times [2021-11-07 07:43:29,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:43:29,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496805305] [2021-11-07 07:43:29,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:43:29,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:43:30,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:43:30,097 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:43:30,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:43:30,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496805305] [2021-11-07 07:43:30,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496805305] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:43:30,098 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:43:30,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:43:30,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688975254] [2021-11-07 07:43:30,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:43:30,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:43:30,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:43:30,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:43:30,105 INFO L87 Difference]: Start difference. First operand 13839 states and 16687 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 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 07:43:33,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:43:33,879 INFO L93 Difference]: Finished difference Result 33200 states and 41058 transitions. [2021-11-07 07:43:33,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:43:33,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 215 [2021-11-07 07:43:33,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:43:33,933 INFO L225 Difference]: With dead ends: 33200 [2021-11-07 07:43:33,934 INFO L226 Difference]: Without dead ends: 20150 [2021-11-07 07:43:33,950 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:43:33,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20150 states. [2021-11-07 07:43:34,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20150 to 20140. [2021-11-07 07:43:34,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20140 states, 20139 states have (on average 1.1900789512885446) internal successors, (23967), 20139 states have internal predecessors, (23967), 0 states have call successors, (0), 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 07:43:34,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20140 states to 20140 states and 23967 transitions. [2021-11-07 07:43:34,265 INFO L78 Accepts]: Start accepts. Automaton has 20140 states and 23967 transitions. Word has length 215 [2021-11-07 07:43:34,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:43:34,266 INFO L470 AbstractCegarLoop]: Abstraction has 20140 states and 23967 transitions. [2021-11-07 07:43:34,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 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 07:43:34,266 INFO L276 IsEmpty]: Start isEmpty. Operand 20140 states and 23967 transitions. [2021-11-07 07:43:34,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-11-07 07:43:34,270 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:43:34,271 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:43:34,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 07:43:34,271 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 07:43:34,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:43:34,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1322212109, now seen corresponding path program 1 times [2021-11-07 07:43:34,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:43:34,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678528296] [2021-11-07 07:43:34,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:43:34,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:43:34,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:43:34,412 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:43:34,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:43:34,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678528296] [2021-11-07 07:43:34,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678528296] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:43:34,413 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:43:34,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:43:34,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001034974] [2021-11-07 07:43:34,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:43:34,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:43:34,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:43:34,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:43:34,416 INFO L87 Difference]: Start difference. First operand 20140 states and 23967 transitions. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 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 07:43:37,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:43:37,865 INFO L93 Difference]: Finished difference Result 39361 states and 46961 transitions. [2021-11-07 07:43:37,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:43:37,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 230 [2021-11-07 07:43:37,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:43:37,903 INFO L225 Difference]: With dead ends: 39361 [2021-11-07 07:43:37,903 INFO L226 Difference]: Without dead ends: 20010 [2021-11-07 07:43:37,923 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:43:37,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20010 states. [2021-11-07 07:43:38,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20010 to 19219. [2021-11-07 07:43:38,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19219 states, 19218 states have (on average 1.1323238630450618) internal successors, (21761), 19218 states have internal predecessors, (21761), 0 states have call successors, (0), 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 07:43:38,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19219 states to 19219 states and 21761 transitions. [2021-11-07 07:43:38,207 INFO L78 Accepts]: Start accepts. Automaton has 19219 states and 21761 transitions. Word has length 230 [2021-11-07 07:43:38,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:43:38,208 INFO L470 AbstractCegarLoop]: Abstraction has 19219 states and 21761 transitions. [2021-11-07 07:43:38,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 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 07:43:38,209 INFO L276 IsEmpty]: Start isEmpty. Operand 19219 states and 21761 transitions. [2021-11-07 07:43:38,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2021-11-07 07:43:38,215 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:43:38,216 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:43:38,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 07:43:38,216 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 07:43:38,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:43:38,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1023656445, now seen corresponding path program 1 times [2021-11-07 07:43:38,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:43:38,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334230389] [2021-11-07 07:43:38,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:43:38,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:43:38,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:43:38,379 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 289 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 07:43:38,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:43:38,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334230389] [2021-11-07 07:43:38,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334230389] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:43:38,380 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:43:38,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:43:38,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758440595] [2021-11-07 07:43:38,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:43:38,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:43:38,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:43:38,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:43:38,382 INFO L87 Difference]: Start difference. First operand 19219 states and 21761 transitions. Second operand has 4 states, 4 states have (on average 71.5) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 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 07:43:46,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:43:46,759 INFO L93 Difference]: Finished difference Result 70903 states and 80409 transitions. [2021-11-07 07:43:46,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:43:46,760 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.5) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 299 [2021-11-07 07:43:46,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:43:46,853 INFO L225 Difference]: With dead ends: 70903 [2021-11-07 07:43:46,853 INFO L226 Difference]: Without dead ends: 52473 [2021-11-07 07:43:46,876 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:43:46,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52473 states. [2021-11-07 07:43:47,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52473 to 50782. [2021-11-07 07:43:47,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50782 states, 50781 states have (on average 1.116401803824265) internal successors, (56692), 50781 states have internal predecessors, (56692), 0 states have call successors, (0), 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 07:43:47,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50782 states to 50782 states and 56692 transitions. [2021-11-07 07:43:47,717 INFO L78 Accepts]: Start accepts. Automaton has 50782 states and 56692 transitions. Word has length 299 [2021-11-07 07:43:47,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:43:47,718 INFO L470 AbstractCegarLoop]: Abstraction has 50782 states and 56692 transitions. [2021-11-07 07:43:47,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.5) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 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 07:43:47,719 INFO L276 IsEmpty]: Start isEmpty. Operand 50782 states and 56692 transitions. [2021-11-07 07:43:47,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2021-11-07 07:43:47,726 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:43:47,727 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:43:47,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 07:43:47,728 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 07:43:47,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:43:47,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1837894397, now seen corresponding path program 1 times [2021-11-07 07:43:47,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:43:47,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481139404] [2021-11-07 07:43:47,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:43:47,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:43:47,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:43:47,909 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 196 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-11-07 07:43:47,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:43:47,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481139404] [2021-11-07 07:43:47,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481139404] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:43:47,910 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:43:47,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 07:43:47,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676803375] [2021-11-07 07:43:47,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:43:47,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:43:47,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:43:47,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:43:47,913 INFO L87 Difference]: Start difference. First operand 50782 states and 56692 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 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 07:43:52,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:43:52,260 INFO L93 Difference]: Finished difference Result 111025 states and 123695 transitions. [2021-11-07 07:43:52,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:43:52,261 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 313 [2021-11-07 07:43:52,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:43:52,327 INFO L225 Difference]: With dead ends: 111025 [2021-11-07 07:43:52,327 INFO L226 Difference]: Without dead ends: 60245 [2021-11-07 07:43:52,349 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:43:52,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60245 states. [2021-11-07 07:43:52,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60245 to 59450. [2021-11-07 07:43:52,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59450 states, 59449 states have (on average 1.1065282847482716) internal successors, (65782), 59449 states have internal predecessors, (65782), 0 states have call successors, (0), 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 07:43:53,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59450 states to 59450 states and 65782 transitions. [2021-11-07 07:43:53,066 INFO L78 Accepts]: Start accepts. Automaton has 59450 states and 65782 transitions. Word has length 313 [2021-11-07 07:43:53,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:43:53,067 INFO L470 AbstractCegarLoop]: Abstraction has 59450 states and 65782 transitions. [2021-11-07 07:43:53,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 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 07:43:53,067 INFO L276 IsEmpty]: Start isEmpty. Operand 59450 states and 65782 transitions. [2021-11-07 07:43:53,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2021-11-07 07:43:53,075 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:43:53,075 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:43:53,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 07:43:53,076 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 07:43:53,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:43:53,077 INFO L85 PathProgramCache]: Analyzing trace with hash -820854567, now seen corresponding path program 1 times [2021-11-07 07:43:53,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:43:53,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881853649] [2021-11-07 07:43:53,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:43:53,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:43:53,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:43:53,421 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 199 proven. 110 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 07:43:53,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:43:53,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881853649] [2021-11-07 07:43:53,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881853649] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:43:53,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660558809] [2021-11-07 07:43:53,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:43:53,422 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:43:53,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064d2f35-fd50-4d23-998a-cd81c05dd11c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:43:53,424 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064d2f35-fd50-4d23-998a-cd81c05dd11c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:43:53,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064d2f35-fd50-4d23-998a-cd81c05dd11c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 07:43:53,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:43:53,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 07:43:53,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:43:54,543 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 196 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2021-11-07 07:43:54,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660558809] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:43:54,544 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:43:54,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2021-11-07 07:43:54,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807217258] [2021-11-07 07:43:54,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:43:54,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:43:54,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:43:54,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-07 07:43:54,549 INFO L87 Difference]: Start difference. First operand 59450 states and 65782 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 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 07:43:58,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:43:58,993 INFO L93 Difference]: Finished difference Result 118109 states and 130769 transitions. [2021-11-07 07:43:58,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:43:58,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 342 [2021-11-07 07:43:59,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:43:59,071 INFO L225 Difference]: With dead ends: 118109 [2021-11-07 07:43:59,071 INFO L226 Difference]: Without dead ends: 59448 [2021-11-07 07:43:59,088 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-07 07:43:59,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59448 states. [2021-11-07 07:43:59,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59448 to 59447. [2021-11-07 07:43:59,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59447 states, 59446 states have (on average 1.0850015139790734) internal successors, (64499), 59446 states have internal predecessors, (64499), 0 states have call successors, (0), 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 07:43:59,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59447 states to 59447 states and 64499 transitions. [2021-11-07 07:43:59,923 INFO L78 Accepts]: Start accepts. Automaton has 59447 states and 64499 transitions. Word has length 342 [2021-11-07 07:43:59,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:43:59,924 INFO L470 AbstractCegarLoop]: Abstraction has 59447 states and 64499 transitions. [2021-11-07 07:43:59,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 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 07:43:59,925 INFO L276 IsEmpty]: Start isEmpty. Operand 59447 states and 64499 transitions. [2021-11-07 07:43:59,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2021-11-07 07:43:59,932 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:43:59,932 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:43:59,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064d2f35-fd50-4d23-998a-cd81c05dd11c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 07:44:00,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064d2f35-fd50-4d23-998a-cd81c05dd11c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-07 07:44:00,154 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 07:44:00,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:44:00,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1208469246, now seen corresponding path program 1 times [2021-11-07 07:44:00,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:44:00,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258193346] [2021-11-07 07:44:00,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:44:00,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:44:00,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:44:00,532 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2021-11-07 07:44:00,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:44:00,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258193346] [2021-11-07 07:44:00,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258193346] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:44:00,533 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:44:00,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:44:00,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400182088] [2021-11-07 07:44:00,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:44:00,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:44:00,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:44:00,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:44:00,535 INFO L87 Difference]: Start difference. First operand 59447 states and 64499 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 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 07:44:05,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:44:05,139 INFO L93 Difference]: Finished difference Result 133075 states and 145734 transitions. [2021-11-07 07:44:05,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:44:05,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 345 [2021-11-07 07:44:05,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:44:05,218 INFO L225 Difference]: With dead ends: 133075 [2021-11-07 07:44:05,219 INFO L226 Difference]: Without dead ends: 83085 [2021-11-07 07:44:05,240 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:44:05,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83085 states. [2021-11-07 07:44:06,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83085 to 83076. [2021-11-07 07:44:06,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83076 states, 83075 states have (on average 1.087896479085164) internal successors, (90377), 83075 states have internal predecessors, (90377), 0 states have call successors, (0), 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 07:44:06,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83076 states to 83076 states and 90377 transitions. [2021-11-07 07:44:06,367 INFO L78 Accepts]: Start accepts. Automaton has 83076 states and 90377 transitions. Word has length 345 [2021-11-07 07:44:06,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:44:06,368 INFO L470 AbstractCegarLoop]: Abstraction has 83076 states and 90377 transitions. [2021-11-07 07:44:06,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 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 07:44:06,368 INFO L276 IsEmpty]: Start isEmpty. Operand 83076 states and 90377 transitions. [2021-11-07 07:44:06,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2021-11-07 07:44:06,395 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:44:06,396 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:44:06,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-07 07:44:06,396 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 07:44:06,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:44:06,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1519622775, now seen corresponding path program 1 times [2021-11-07 07:44:06,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:44:06,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006857212] [2021-11-07 07:44:06,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:44:06,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:44:06,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:44:06,842 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 384 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2021-11-07 07:44:06,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:44:06,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006857212] [2021-11-07 07:44:06,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006857212] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:44:06,843 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:44:06,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:44:06,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876409519] [2021-11-07 07:44:06,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:44:06,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:44:06,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:44:06,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:44:06,847 INFO L87 Difference]: Start difference. First operand 83076 states and 90377 transitions. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 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 07:44:11,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:44:11,287 INFO L93 Difference]: Finished difference Result 192128 states and 210608 transitions. [2021-11-07 07:44:11,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:44:11,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 372 [2021-11-07 07:44:11,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:44:11,428 INFO L225 Difference]: With dead ends: 192128 [2021-11-07 07:44:11,428 INFO L226 Difference]: Without dead ends: 109841 [2021-11-07 07:44:11,452 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:44:11,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109841 states. [2021-11-07 07:44:12,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109841 to 107461. [2021-11-07 07:44:12,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107461 states, 107460 states have (on average 1.091531732737763) internal successors, (117296), 107460 states have internal predecessors, (117296), 0 states have call successors, (0), 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 07:44:13,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107461 states to 107461 states and 117296 transitions. [2021-11-07 07:44:13,078 INFO L78 Accepts]: Start accepts. Automaton has 107461 states and 117296 transitions. Word has length 372 [2021-11-07 07:44:13,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:44:13,079 INFO L470 AbstractCegarLoop]: Abstraction has 107461 states and 117296 transitions. [2021-11-07 07:44:13,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 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 07:44:13,079 INFO L276 IsEmpty]: Start isEmpty. Operand 107461 states and 117296 transitions. [2021-11-07 07:44:13,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2021-11-07 07:44:13,087 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:44:13,088 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:44:13,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-07 07:44:13,088 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 07:44:13,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:44:13,089 INFO L85 PathProgramCache]: Analyzing trace with hash -201282790, now seen corresponding path program 1 times [2021-11-07 07:44:13,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:44:13,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017451685] [2021-11-07 07:44:13,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:44:13,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:44:13,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:44:13,310 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2021-11-07 07:44:13,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:44:13,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017451685] [2021-11-07 07:44:13,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017451685] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:44:13,311 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:44:13,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:44:13,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002696046] [2021-11-07 07:44:13,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:44:13,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:44:13,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:44:13,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:44:13,314 INFO L87 Difference]: Start difference. First operand 107461 states and 117296 transitions. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 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 07:44:17,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:44:17,718 INFO L93 Difference]: Finished difference Result 216498 states and 236184 transitions. [2021-11-07 07:44:17,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:44:17,719 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 405 [2021-11-07 07:44:17,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:44:17,894 INFO L225 Difference]: With dead ends: 216498 [2021-11-07 07:44:17,894 INFO L226 Difference]: Without dead ends: 109826 [2021-11-07 07:44:17,951 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:44:18,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109826 states. [2021-11-07 07:44:19,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109826 to 107454. [2021-11-07 07:44:19,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107454 states, 107453 states have (on average 1.0681507263640848) internal successors, (114776), 107453 states have internal predecessors, (114776), 0 states have call successors, (0), 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 07:44:19,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107454 states to 107454 states and 114776 transitions. [2021-11-07 07:44:19,261 INFO L78 Accepts]: Start accepts. Automaton has 107454 states and 114776 transitions. Word has length 405 [2021-11-07 07:44:19,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:44:19,262 INFO L470 AbstractCegarLoop]: Abstraction has 107454 states and 114776 transitions. [2021-11-07 07:44:19,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 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 07:44:19,262 INFO L276 IsEmpty]: Start isEmpty. Operand 107454 states and 114776 transitions. [2021-11-07 07:44:19,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2021-11-07 07:44:19,278 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:44:19,279 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:44:19,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-07 07:44:19,280 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 07:44:19,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:44:19,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1634580838, now seen corresponding path program 1 times [2021-11-07 07:44:19,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:44:19,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134446653] [2021-11-07 07:44:19,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:44:19,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:44:19,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:44:20,001 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 538 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-11-07 07:44:20,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:44:20,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134446653] [2021-11-07 07:44:20,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134446653] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:44:20,002 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:44:20,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:44:20,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220456622] [2021-11-07 07:44:20,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:44:20,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:44:20,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:44:20,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:44:20,005 INFO L87 Difference]: Start difference. First operand 107454 states and 114776 transitions. Second operand has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 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 07:44:24,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:44:24,882 INFO L93 Difference]: Finished difference Result 277223 states and 296834 transitions. [2021-11-07 07:44:24,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:44:24,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 485 [2021-11-07 07:44:24,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:44:25,075 INFO L225 Difference]: With dead ends: 277223 [2021-11-07 07:44:25,075 INFO L226 Difference]: Without dead ends: 170558 [2021-11-07 07:44:25,118 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:44:25,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170558 states. [2021-11-07 07:44:27,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170558 to 166515. [2021-11-07 07:44:27,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166515 states, 166514 states have (on average 1.0666550560313246) internal successors, (177613), 166514 states have internal predecessors, (177613), 0 states have call successors, (0), 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 07:44:27,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166515 states to 166515 states and 177613 transitions. [2021-11-07 07:44:27,861 INFO L78 Accepts]: Start accepts. Automaton has 166515 states and 177613 transitions. Word has length 485 [2021-11-07 07:44:27,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:44:27,862 INFO L470 AbstractCegarLoop]: Abstraction has 166515 states and 177613 transitions. [2021-11-07 07:44:27,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 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 07:44:27,862 INFO L276 IsEmpty]: Start isEmpty. Operand 166515 states and 177613 transitions. [2021-11-07 07:44:27,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2021-11-07 07:44:27,901 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:44:27,902 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:44:27,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-07 07:44:27,903 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 07:44:27,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:44:27,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1893946046, now seen corresponding path program 1 times [2021-11-07 07:44:27,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:44:27,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557042389] [2021-11-07 07:44:27,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:44:27,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:44:27,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:44:28,217 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 268 proven. 110 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 07:44:28,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:44:28,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557042389] [2021-11-07 07:44:28,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557042389] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:44:28,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51132995] [2021-11-07 07:44:28,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:44:28,219 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:44:28,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064d2f35-fd50-4d23-998a-cd81c05dd11c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:44:28,222 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064d2f35-fd50-4d23-998a-cd81c05dd11c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:44:28,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064d2f35-fd50-4d23-998a-cd81c05dd11c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 07:44:28,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:44:28,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:44:28,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:44:30,351 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 265 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2021-11-07 07:44:30,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51132995] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:44:30,353 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:44:30,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2021-11-07 07:44:30,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714402328] [2021-11-07 07:44:30,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:44:30,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:44:30,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:44:30,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-07 07:44:30,359 INFO L87 Difference]: Start difference. First operand 166515 states and 177613 transitions. Second operand has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 2 states have internal predecessors, (382), 0 states have call successors, (0), 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 07:44:35,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:44:35,267 INFO L93 Difference]: Finished difference Result 322808 states and 344824 transitions. [2021-11-07 07:44:35,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:44:35,267 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 2 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 507 [2021-11-07 07:44:35,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:44:35,474 INFO L225 Difference]: With dead ends: 322808 [2021-11-07 07:44:35,474 INFO L226 Difference]: Without dead ends: 171249 [2021-11-07 07:44:35,546 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 511 GetRequests, 506 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-07 07:44:35,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171249 states. [2021-11-07 07:44:37,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171249 to 168877. [2021-11-07 07:44:37,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168877 states, 168876 states have (on average 1.0609026741514485) internal successors, (179161), 168876 states have internal predecessors, (179161), 0 states have call successors, (0), 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 07:44:37,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168877 states to 168877 states and 179161 transitions. [2021-11-07 07:44:37,924 INFO L78 Accepts]: Start accepts. Automaton has 168877 states and 179161 transitions. Word has length 507 [2021-11-07 07:44:37,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:44:37,924 INFO L470 AbstractCegarLoop]: Abstraction has 168877 states and 179161 transitions. [2021-11-07 07:44:37,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 2 states have internal predecessors, (382), 0 states have call successors, (0), 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 07:44:37,925 INFO L276 IsEmpty]: Start isEmpty. Operand 168877 states and 179161 transitions. [2021-11-07 07:44:37,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2021-11-07 07:44:37,948 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:44:37,948 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:44:37,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064d2f35-fd50-4d23-998a-cd81c05dd11c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 07:44:38,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064d2f35-fd50-4d23-998a-cd81c05dd11c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-07 07:44:38,149 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 07:44:38,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:44:38,150 INFO L85 PathProgramCache]: Analyzing trace with hash 571328055, now seen corresponding path program 1 times [2021-11-07 07:44:38,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:44:38,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589440537] [2021-11-07 07:44:38,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:44:38,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:44:38,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:44:38,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1251 backedges. 481 proven. 0 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2021-11-07 07:44:38,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:44:38,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589440537] [2021-11-07 07:44:38,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589440537] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:44:38,378 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:44:38,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 07:44:38,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215805671] [2021-11-07 07:44:38,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:44:38,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:44:38,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:44:38,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:44:38,381 INFO L87 Difference]: Start difference. First operand 168877 states and 179161 transitions. Second operand has 3 states, 3 states have (on average 105.0) internal successors, (315), 2 states have internal predecessors, (315), 0 states have call successors, (0), 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 07:44:41,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:44:41,538 INFO L93 Difference]: Finished difference Result 317269 states and 337183 transitions. [2021-11-07 07:44:41,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:44:41,539 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 2 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 640 [2021-11-07 07:44:41,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:44:41,730 INFO L225 Difference]: With dead ends: 317269 [2021-11-07 07:44:41,730 INFO L226 Difference]: Without dead ends: 164925 [2021-11-07 07:44:41,790 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:44:41,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164925 states. [2021-11-07 07:44:44,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164925 to 164924. [2021-11-07 07:44:44,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164924 states, 164923 states have (on average 1.0603857557769383) internal successors, (174882), 164923 states have internal predecessors, (174882), 0 states have call successors, (0), 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 07:44:44,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164924 states to 164924 states and 174882 transitions. [2021-11-07 07:44:44,694 INFO L78 Accepts]: Start accepts. Automaton has 164924 states and 174882 transitions. Word has length 640 [2021-11-07 07:44:44,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:44:44,694 INFO L470 AbstractCegarLoop]: Abstraction has 164924 states and 174882 transitions. [2021-11-07 07:44:44,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 2 states have internal predecessors, (315), 0 states have call successors, (0), 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 07:44:44,694 INFO L276 IsEmpty]: Start isEmpty. Operand 164924 states and 174882 transitions. [2021-11-07 07:44:44,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2021-11-07 07:44:44,717 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:44:44,718 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:44:44,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-07 07:44:44,718 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 07:44:44,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:44:44,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1084265856, now seen corresponding path program 1 times [2021-11-07 07:44:44,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:44:44,720 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256178304] [2021-11-07 07:44:44,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:44:44,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:44:44,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:44:44,983 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 755 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-11-07 07:44:44,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:44:44,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256178304] [2021-11-07 07:44:44,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256178304] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:44:44,984 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:44:44,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:44:44,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766328031] [2021-11-07 07:44:44,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:44:44,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:44:44,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:44:44,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:44:44,987 INFO L87 Difference]: Start difference. First operand 164924 states and 174882 transitions. Second operand has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 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 07:44:49,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:44:49,413 INFO L93 Difference]: Finished difference Result 314910 states and 334499 transitions. [2021-11-07 07:44:49,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:44:49,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 640 [2021-11-07 07:44:49,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:44:50,133 INFO L225 Difference]: With dead ends: 314910 [2021-11-07 07:44:50,134 INFO L226 Difference]: Without dead ends: 164940 [2021-11-07 07:44:50,192 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:44:50,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164940 states. [2021-11-07 07:44:52,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164940 to 162559. [2021-11-07 07:44:52,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162559 states, 162558 states have (on average 1.0573210792455616) internal successors, (171876), 162558 states have internal predecessors, (171876), 0 states have call successors, (0), 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 07:44:52,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162559 states to 162559 states and 171876 transitions. [2021-11-07 07:44:52,311 INFO L78 Accepts]: Start accepts. Automaton has 162559 states and 171876 transitions. Word has length 640 [2021-11-07 07:44:52,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:44:52,312 INFO L470 AbstractCegarLoop]: Abstraction has 162559 states and 171876 transitions. [2021-11-07 07:44:52,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 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 07:44:52,312 INFO L276 IsEmpty]: Start isEmpty. Operand 162559 states and 171876 transitions. [2021-11-07 07:44:52,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 671 [2021-11-07 07:44:52,335 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:44:52,336 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:44:52,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-07 07:44:52,337 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 07:44:52,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:44:52,337 INFO L85 PathProgramCache]: Analyzing trace with hash 524904638, now seen corresponding path program 1 times [2021-11-07 07:44:52,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:44:52,338 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332579877] [2021-11-07 07:44:52,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:44:52,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:44:52,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat